black start of sr 2014

BLACK START

RESTORATION PROCEDURES

OF

SOUTHERN REGION 2014

SOUTHERN REGIONAL LOAD DESPATCH CENTRE

POWER SYSTEM OPERATION CORPORATION LTD

NOVEMBER 2013

BANGALORE

INDEX

CHAPTER DESCRIPTION PAGE NO.

1 Introduction 1-2

2 Black start Facilities 3-4

3 System Restoration Approach 5-7

4 Southern region – Over view & Grid maps 8-16

5 Detailed Operational Procedure for AndhraPradesh 17-70

6 Detailed Operational Procedure for Karnataka 71-96

7 Detailed Operational Procedure for Tamil nadu 97-151

8 Detailed Operational Procedure for Kerala 152-175

9 Electric Traction 176-191

List of Annexures

ANNEXUR

E

DESCRIPTION PAGE NO.

I List of Power Stations With Black Start Facility in S.R 192-193

II List of Major Sub-Stations With Synchronising Facility in S.R

194-197

III List of Railway Traction Stations 198-201

IV Mock Exercise Procedure For Inter Regional HVDC Links

202-206

List of Exhibits

EXHIBIT DESCRIPTION PAGE NO.

ANDHRA PRADESH

1 Startup Power for A.P Subsystem – 1: RYTPP, VTPS, Srisailam & N’Sagar Complex (During Total / Partial Blackout)

27


2 Startup Power for A.P Subsystem – 2: Ramagundam NTPC (During Total Blackout)

39

3 Schematic Diagram of Badravathi HVDC Back to Back Station

40

4 Startup Power for A.P Subsystem – 2: Ramagundam NTPC (During Partial Blackout)

46

5 Startup Power for A.P Subsystem – 3: KTPS, NTPC Simhadri (During Partial Blackout)

50

6 Schematic Diagram of Gajuwakha HVDC Back to Back Station

55

7 Supply Details for Railway Traction System in A.P 60-62

KARNATAKA

8

Startup Power for Karnataka Subsystem – 1: Sharavathi, Sharavathi Tail Race (STRP), Jog, Varahi and Yelehanka (Diesel). (During Total / Partial Blackout)

77

9

Startup Power for Karnataka Subsystem – 2: RTPS,BTPS, Nagjheri, Kadra, Kodasalli ,Kaiga, Tata & Jindal (During Total /Partial Blackout)

84

10 Supply Details for Railway Traction System in Karnataka

95

TAMIL NADU

11 Startup Power for TN Subsystem – 1: TTPS (During Total Blackout)

110

12 Startup Power for TN Subsystem – 2: MTPS & NLC (During Total / Partial Blackout)

121

13 Startup Power for TN Subsystem – 3: Chennai Area (During Total / Partial Blackout)

140

14 Supply Details for Railway Traction System in Tamil Nadu.

146-147

KERALA

15 Startup Power for Kerala Subsystem – 1: North Kerala (During Total / Partial Blackout)

158

16 Startup Power for Kerala Subsystem – 2: South Kerala (During Total / Partial Blackout)

163

17 Supply Details for Railway Traction System in Kerala. 169

Grid Maps


1 Andhra Pradesh System 12

2 Karnataka System 13

3 Kerala System 14

4 Tamil Nadu System 15

5 Southern Region 16

Mock Drill


1 Andhra Pradesh System 63-70

2 Karnataka System 96

3 Kerala System 170-175

4 Tamil Nadu System 150-151

SRLDC Black Start Restoration Procedure 2014

1.0 INTRODUCTION

1.1 In an integrated power system, disturbances of major / minor nature can occur under

various contingencies. Such disturbances can result in collapse of a part of the

system or sometimes entire system, requiring restoration of the affected system in

the minimum possible time. In order to achieve the same, it is therefore necessary to

have a well laid down restoration procedure under various conditions of partial black

out and /or total black out of the system.

1.2 In the event of a black out, the initial moments are extremely precious and it requires

the right decision to be taken at first instance for speedy restoration of the system.

Any lapse or delay in taking the right initial decision may prove to be very costly.

Hence, it is of paramount importance that all the operating personnel of Load

Despatch Centres and the officials involved in grid operation should be thoroughly

conversant with the restoration procedure so as to minimise the time taken in

restoration of the system after partial /total black out. Further during the Restoration

process the system operators, Power station and Substation personnel must act in

consonance to normalize the grid.

1.3 SRLDC has been publishing the document on “Black Start Restoration Procedure in

SR” from time to time viz. December 1999, January 2002, July 2004, July 2006,

February 2009, February 2010 , February 2011, January 2012, December 2012. As

the network is expanding, in line with clause 5.8 (a & b) of IEGC, this Procedure

requires review and/or revision every year, based on which the Mock drill of the

procedure for different sub-systems shall be carried out by the constituents at least

once every six months under intimation to SRLDC.

1.4 SRLDC has requested the feedback & changes w.r.t last year in 88th OCCM & 89th

OCCM & letter dt 29.10.13.

1.5 Based on the details of new elements added during this year and the feedback

received during Black start Workshop held at constituents premises & letter

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communication, the updated version of the “Black Start Restoration Procedure in SR

– 2014” (BSRP – 2014) is being released.

1.6 The procedures given in this document are general in nature and provide a guideline

for the restoration team at the time of disturbance. Depending on the availability of

transmission elements, generators and the category and extent of blackout,

restoration on real time basis should adopt the best procedure suited for the

situation.

1.7 Based on this document, SR constituents are advised to prepare station wise

detailed mock drill procedure/plan including switching instructions in their control

centres, so that the operators will have further clarity to ensure faster restoration in

case of contingencies.

--------

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2.0 BLACK START FACILITIES

2.1 Existing Black Start facilities :

A list of generating stations with self-start facilities is enclosed as Annexure-I.

2.2 Survival/Auxiliary power requirement :

Survival power can be defined as the minimum power required for avoiding the

damage to the equipment in case of supply failure and keep the equipment fit for

reuse immediately. Under black start failure the survival / auxiliary power would

consist of the following:

� Turbine emergency oil pump

� Jacking oil pumps

� Barring gear of the turbine

� Lubricating oil pumps

� Compressors for breaker operation

� Emergency lighting

� Battery chargers communication & telemetry system.

2.3 As a general rule, the survival power requirement would be around 0.25-0.30%

of the unit capacity.

Sl.No. Unit Capacity Survival power required

1 120 MW Unit 250-350 KW

2 210 MW unit 350-500 KW

3 500 MW Unit 1250-1500 KW

2.4 Start up power requirement:

The start up power is the power required for the auxiliaries while the generating unit

is restored. The requirement of start up power by various units is as follows:

� Nuclear & Thermal : 7 to 8% of the unit capacity

� Hydro : 0.5 to 1% of the unit capacity

� Gas : 1.5 to 2%of the unit capacity

The startup power requirement for starting the thermal units is considerably high as

the major auxiliaries like BFP, ID Fan, FD fan, CW pumps etc. are of bigger size and

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the starting torque is large. However, in case of hydro units, the requirement of start-

up power is comparatively much lower because of relatively very few auxiliaries. The

details of the DG Set installed in the generating stations for providing start up power

is enclosed as Annexure-I.

2.5 Synchronising facilities at power stations / Major sub-stations:

In order to build up the system, the synchronizing facilities play a very important role.

The different generating stations having synchronising facilities are indicated in

Annexure-1. Similarly, major 220/230KV sub-stations where synchronising facilities

are available are detailed at Annexure-II. All 400kV Stations in the Region have

Synchronising facility

2.6 Railway Traction Supply

During the time of System Restoration (Black Start) due importance is required to be

given to the traction load and the supply to the grid points feeding the Railway

Traction Station is to be extended on priority. A List of Railway Traction Stations is

given in Annexure III

2.7 Mock Exercise Procedure

Mock Exercise Procedure for availing start-up power through AC by-pass of Inter

Regional HVDC Links is detailed in Annexure – IV.

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3.0 SYSTEM RESTORATION APPROACH

While Restoring the System the following specific points must be given due

importance: 3.1 Systems with a fair dispersal of generating stations with Black Start facilities

Those generating stations where black start facility are available should be started up and stable islands should be formed around these generating stations by connecting essential loads. These islands should be gradually interconnected at the earliest opportunity keeping into consideration the total load-generation balance. Care should be taken to add loads in steps keeping in view the load characteristics i.e. variation of load with respect to voltage & frequency.

3.2 Systems with limited and /or distant Black Start facility

Providing start up power for systems which have few generating stations with black start facilities or the start up power to be imported from neighboring regions at one or two points is a challenging job. This is mainly due to the distance between the source of startup power and the generators and while extending the startup power care should be taken to control the voltages at various intermediate points. This can be achieved by providing loads and adjusting the taps of the transformers at the intermediate stations. Sufficient attention has to be given for MVAR management and line loadings to prevent secondary collapse during restoration which will extend the restoration time.

3.3 Reactive Power Control:

During initial stages of restoration process, it is of utmost importance to keep the system voltages within the allowable limit. This can be accomplished by � Charging the shorter line first � Switching off capacitor bank � Taking bus reactors into service � Charging transformers and taking Bus reactors into service wherever

available. � Converting line reactors into Bus reactors wherever feasible. � Operating generators at minimum voltage levels � Changing transformer taps � Energisation of fewer high voltage lines.

3.4 Load & Generation Balance:

� Achieving load generation balance by restoring commensurate and essential

loads only. � Restoring load in small steps keeping in view the load characteristics. � Paying special attention while restoring traction and other fluctuating loads. � If considered essential, then by by-passing the U/F relays initially, until

sufficient loads are connected & frequency stabilizes. � Maintaining frequency close to 50 Hz.

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� Keeping Generating units on FGMO

3.5 Priorities:

� Provide backup survival/start up power to nuclear units. � Restore start up power supply to generating stations, critical sub-stations and

load dispatch centres � Formation of self-sustaining Islands around the generating stations for which

procedures should be laid down in advance. � Avoid paralleling islands through weak ties.

3.6 Communication & Co-ordination:

� Ensuring reliable communication between LDC’s, generating stations and major sub-stations.

� Agreed back up procedures & delegation of control in the event of failure of communication facilities.

Actions to be taken at Generating Stations and Substations:

Each Substation/Generating Station should draw its own detailed procedure for the action to be taken in their stations during restoration

� To avoid delay in restoration ensure the proper functioning of bus couplers, synchronising facility etc at regular intervals

� Ensure proper gas/air pressure in breakers and attend to minor leaks in time. � Do not attempt charging the suspected element. � Controlling high voltage during restoration to avoid damage to equipments � In case of low battery condition during restoration (due to weak battery/long

duration outage of power supply), to avoid excessive power drain, only the essential load/communication channels to be kept in service Detail procedure for such actions has to be prepared and kept handy by the concerned substation/generating station

3.7 Survival Power:

Ensuring availability of backup power supplies such as batteries, battery chargers, diesel sets to ensure supply to essential loads like air compressor for operation of circuit breakers, DC system for communication systems etc.

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3.8 General Guidelines:

While each disturbance would be different and may require a different plan, nevertheless it would be useful to formulate general guidelines for the benefit of the load despatchers. These may be described as below:

a) The operator at generating stations and sub-stations should have the

knowledge of pre-identified synchronising locations and pre laid down synchronising procedures.

b) Switching procedure should be clearly laid down and periodically reviewed. c) The transformer taps should be checked for desired setting to minimise

voltage difference. d) The sub-stations operators and load despatchers should make a check of the

capacitor banks and reactors in service & accordingly should carry out the switching operations for voltage control.

e) Energising of high voltage lines and cables should be avoided until enough

generating capacity is available. f) Provision of islanding schemes area-wise, power station wise, and Unit wise

would enhance the ability to restore faster. These should be fully exploited. g) Startup power to nuclear plants should be extended fast as poisoning of the

reactors would delay restoration of nuclear units.

h) Guidelines for decision making should be clear and should be delegated to all the major sub-stations and generating stations under varied conditions.

i) Imparting training & providing necessary documentation to the load

despatchers Note: The Restoration Procedure and sequence as given in document gives the

general guidelines for restoring the system. However, as the exact conditions in case of each disturbance may be different and vary, the officer building up the system may take the action best suited for speedy Restoration of the system in real time.

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4.0 SOUTHERN REGION OVERVIEW

This chapter explains the broad guidelines for restoring the system during Blackouts.

Procedure is split up in to four sections covering each Geographical area as detailed

below

Geographical

Area

Systems Covered Section Covering

the Procedure

Andhra

Pradesh

Andhra Pradesh and NTPC,

Ramagundam

5

Karnataka Karnataka and Kaiga APP 6

Tamilnadu Tamil Nadu, Pondy, NLC and MAPS 7

Kerala Kerala and Rajeev Gandhi CCPP 8

Each state has been divided in to Subsystems on the basis of the natural separation

taking place during disturbances.

Source for providing start up powers has been identified for each Subsystem both

from within the Subsystem and also from outside the Subsystem for early

Restoration of the power system.

The details of subsystems are:

4.1 ANDHRAPRADESH

Andhrapradesh has been divided into three subsystems as mentioned below:

SUB SYSTEM – 1: The sub-system 1 comprises of major thermal stations viz.

VTPS, Lanco , RYTPS, SEPL , MEPL & Krishnapattinam AP and the important load

centers like Hyderabad, Vijayawada, Kurnool, Machilipatnam & Nellore along with

Black Start facilities at Srisailem & N’Sagar, Jurala ( if Water Available) Hydro

stations

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SUB SYSTEM – 2: The sub-system 2 comprises of Ramagundam Thermal power

station, Kakatiya and the important load centers like Ramagundam loads & Western

Region with No Black Start facilities in the Sub system.


KTPS, Simhadri, & Gas Stations viz Jegrupadu, VGTS, Spectrum, Gowthami,

Konaseema, GMR Vemagiri,Jegrupadu Extn and BSES and the important load

centers like Vizag, Kakinada along with Black Start facilities at U’Sileru, L’Sileru

Hydro stations

Synchronisation of Sub Systems: Once the individual subsystems are built to a

stable level, the systems are synchronized with each other. The synchronization of

subsystems will be done at the generating stations, preferably

4.2 KARNATAKA

Karnataka has been divided into two subsystems as mentioned below:

SUB SYSTEM – 1: The sub-system 1 comprises of Major Hydro Stations Viz.

Sharavathi, Sharavathi Tail Race (STRP), Jog, Varahi and Yelehanka (Diesel),

UPCL. It includes major and important load centre like Bangalore, Mysore, Hoody,

Peenya & Mangalore etc.

SUB SYSTEM – 2: The sub-system 2 comprises of Major Thermal Stations Viz.

Raichur & Bellary and Major Hydro Stations Viz. Nagjheri, Kadra, Kodasalli & Almatti

and Kaiga (Nuclear), Tata (Diesel) & Jindal (Corex). It includes major and important

load centre like Hubli, Belgaum & Gulbarga etc.

4.3 TAMIL NADU

Tamilnadu has been divided into three subsystems as mentioned below:

SUB SYSTEM – 1: The sub-system 1 comprises of major thermal station viz. TTPS,

Kudankulam Atomic Power Station, Hydro stations like Periyar, Suruliyar,

Papanasam, Servalar etc., Madurai Power Corporation Pvt. Ltd., (Diesel Power

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Generating station), PENNA Power (Gas Power Generating Station) Valuthur GTPP

and wind generation spread over southern part of Tamilnadu. The important load

centers in this sub system include Tuticorin, Nagercoil, Tirunelveli & Madurai. This

sub system has process industries like Sterlite and Space research centre at

Mahendragiri etc., INS Kattabomman Naval Centre,

SUB SYSTEM – 2: The sub-system 2 comprises of ISGS station NLC (TS-I Expn,

TS-II, TS-I(Expn)) and major thermal station viz. NLC TS-I, MTPS, Hydro stations

like Kundah, Pykara, Moyar etc., Gas Power Generating Stations like PP Nallur,

ABAN, Kuttalam, Kovilkalappal, Diesel generating station at Samalpatti etc., in the

coastal area of Tamil Nadu and wind generation at Udumalpet area. The important

load centers in this sub system include Coimbatore, Tiruppur, Salem, Tanjore, Trichy

& Hosur. Important Loads such as Traction at Trichy Murugupatty -Ambigapuram

and Ariyalur-Koothur in Trichy area.

SUB SYSTEM – 3: The sub-system 3 comprises of ISGS Nuclear station MAPS,

major thermal stations viz. North Chennai, Vallur, Ennore, GMR Vasavi, Basin Bridge

Gas Power Generating Stations, HITECH and TCPL etc., The important load centers

in this sub system include Chennai and Arni.

4.4 KERALA

Kerala has been divided into two subsystems as detailed below:

SUB SYSTEM – 1: The sub-system 1 comprises of Kozhikode Diesel Generating

Power Station (KDPP) and Kuttiadi Hydro Power Station in the northern part of

Kerala. It includes the load centre like Nallalam, Areakode (Kozhikode), Kasarkode,

Taliparamba, Kannur, etc.,

SUB SYSTEM – 2: The sub-system 2 comprises of Major Hydro Stations Viz. Idukki,

Lower Periyar, Sabirigiri and RGCCPP Kayankulam (Naptha / Gas). It includes major

and important load centres like Trivandrum, Kalamassery, Pallam etc.,

4.5 PROCEDURE DETAILS

Source of startup power in case of Total Blackout of the Region, Blackout of the

entire state system and Blackout of the Subsystem alone.

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• Identifying the loads for each Subsystem.

• Points of synchronisation with other Subsystems.

• Actions to be taken by various Generating Stations and Substations.

The procedures given in this document are general in nature and provide a guideline

for the Restoration team depending on the availability of Transmission Elements,

Generators and the Type and the extend of Blackout Restoration Team, on Real

Time basis, should adopt the best procedure suited for the situation

Based on this document Constituents have to prepare Station wise detailed switching

instructions so that the Operators will have clarity and Restoration will be faster.

4.6 GENRAL PRE RESTORATION REQUIREMENTS

Whenever there is a total Blackout in a state / region, to facilitate early building up of

the stable subsystems, the constituents should keep the UFRs & FGMO in by-

passed condition during the restoration process. Also all the filter banks / capacitor

banks should be in switched off condition during the restoration process.

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SUB SYSTEM 2

SUB SYSTEM 1

SUB SYSTEM 3

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SUB SYSTEM 2

SUB SYSTEM 1

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SUB SYSTEM 1

SUB SYSTEM 2

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SUB-SYSTEM-3

SUB-SYSTEM-2

SUB-SYSTEM-1

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5.0 RESTORATION OF AP SYSTEM

5.1 SYSTEM OVERVIEW

AP system can be divided in to three sub systems, which can be brought up

independently and synchronized subsequently once the system develops in to larger

sustainable islands.

5.2 MAJOR GENERATING STATIONS

Following are the Major Generating Stations in the AP System

Sl

No

STATION TYPE SECTOR

SUB

SYSTEM

CAPACITY

IN MW

BLACK START

FACILITY

1 R S T P S Thermal ISGS 2 2600 Not

Available

2 V T P S Thermal State 1 1760 Not

Available

3 LANCO Gas State 1 352 Not

Available

4 BSES Gas State 3 220 Not

Available

5 JEGURUPADU Gas State 3 216 Not

Available

6 SPECTRUM Gas State 3 208 Not

Available

7 V G T P – I Gas State 3 100 Not

Available

8 V G T P – II Gas State 3 172 Available

9 K T P S Thermal State 3 1720 Not

Available

10 LOWER

SILERU

Hydro State 3 460 Available

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11 UPPER SILERU Hydro State 3 240 Available

12 JURALA Hydro State 1 234 Available

13 SIMHADRI Thermal State 3 1500 Not

Available

14 SRISAILAM LB Hydro State 1 900 Available

15 N’ SAGAR Hydro State 1 816 Available

16 SRISAILAM RB Hydro State 1 770 Available

17 R Y T P S Thermal State 1 1050 Not

Available

18 KAKATIYA Thermal State 3 500 Not

Available

19 VEMAGIRI Gas State 3 370 Not

Available

20 LKPPL Gas IPP 3 366 Not

Available

21 JEGRUPADU GAS IPP 3 220 Not

Available

22 GAUTHAMI GAS IPP 3 464 Not

Available

23 KONASEEMA GAS IPP 3 444 Not

Available

24 GMR BARGE GAS IPP 3 237 Available

25 SEPL THERMA

L

IPP 1 300 Not

Available

25 MEPL THERMA

L

IPP 1 300 Not

Available

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5.3 LIST OF SUB-STATIONS WITH SYNCHRONISING FACILITY

Sl. No. SUB STATION SYNCHRONISING

FACILITY YES/NO

1 220 KV Mydukur YES

2 220 KV Kondapalli YES

3 220 KV Gooty YES

4 220 KV Nunna YES

5 220 KV Garividi YES

6 220 KV Markapur YES

7 220 KV Ongole YES

8 220 KV Somayajulapalli YES

9 220 KV Thallapalli YES

10 220 KV Malkaram YES

11 222 KV Shapurnagar YES

12 222 KV Dindi YES

13 220 KV Miryalaguda YES

Sl. No. SUB STATION SYNCHRONISING

FACILITY YES/NO

14 220 KV Budidampadu YES

15 220 KV Dichpalli YES

16 220 KV Kalwakurthy YES

17 220 KV Tadikonda YES

18 220 KV Bommuru YES

19 220 KV Nidadavole YES

20 220 KV Podili YES

21 220 KV Chandrayangutta YES

22 220 KV Bhongiri YES

23 220 KV Narketpalli YES

24 220 KV Samarlakota(Peddpuram) YES

25 ALL 400 KV Stations in AP YES

5.4 IMPORTANT CONNECTIONS OF AP SYSTEM

5.4.1 WITH OTHER REGION

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With Western Region: HVDC Back to Back Station at Chandrapur

(Bhadrawathi) with A/C by-pass arrangement and 400kV Chandrapur –

Ramagundam D/C

With Eastern Region: HVDC Back to Back Station at Gajuwaka with A/C

by-pass arrangement and 400kV Jeypore – Gajuwaka D/C

5.4.2 220kV Barasur – Lower Sileru and 220kV Balimela – Upper Sileru lines are

not in use.WITHIN THE REGION

A. With Karnataka:

a) 400kV S/C Gooty – Somanahally

b) 400kV S/C Gooty – Neelamangala

c) 400kV D/C Gooty – Raichur

d) 400kV S/C Mehaboobnagar – Raichur

e) 400kV S/C Kadapa – Kolar

f) 220kV S/C Gooty – Regulapadu -Alipur (Bellary)

g) 220kV S/C Tandur – Sedam

B. With Tamil Nadu

a) 400kV S/C Chittoor – Sriperumpudur

b) 400kV D/C Nellore – Alamathy

c) 220kV S/C Sulurpet – Gummidipoondi

d) 220kV S/C Chittoor - Thiruvalam

5.5 SUB SYSTEM DEMARCATION


VTPS, Lanco, RYTPS, SEPL , MEPL & Krishnapattinam AP (as and whenit gets

commissioned) and the important load centers like Hyderabad, Vijayawada, Kurnool,

Machilipatnam & Nellore along with Black Start facilities at Srisailm & N’Sagar, Jurala

( if Water Available) Hydro stations

SUB SYSTEM – 2: The sub-system 2 comprises of Ramagundam Thermal power

station, Kakatiya and the important load centers like Ramagundam loads & Western

Region with No Black Start facilities in the Sub system.

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KTPS, Simhadri, & Gas Stations viz Jegrupadu, VGTS, Spectrum, Gowthami,

Konaseema, GMR Vemagiri,Jegrupadu Extn and BSES and the important load

centers like Vizag, Kakinada along with Black Start facilities at U’Sileru, L’Sileru

Hydro stations

Synchronisation of Sub Systems: Once the individual subsystems are built to a

stable level, the systems are synchronized with each other. The synchronization of

subsystems will be done at the generating stations, preferably.

IMPORTANT Criteria for deciding Restoration approach in AP System.

SURVIVAL of Ramagundam islanding scheme is the most important criteria in

deciding Restoration approach of AP system during total black out condition.

If the Ramagundam islanding scheme successfully survives, then it is

practically NOT possible to connect with WR through AC by-pass at HVDC

Badravathi.

If the Ramagundam-Hyderabad Island of approximately 1800 MW acts (47.8 Hz

with 200ms delay), the System Operator has to restore the Island as quickly as

possible as there are no hydro generators in this Island and Ramagundam

units have limited bandwidth to flex generation as required by the loads. The

System Operator at AP SLDC would endeavor to closely match loads to

Ramagundam Generation at all times. The Restoration procedure would now

focus on synchronising this Island with N’Sagar-Srisailam island that may

have to be built up from black start. In case rest of AP/SR survives the

Ramagundam-Hyderabad Island can be quickly synchronised with rest of

AP/SR system by flexing the generation at N’Sagara Srisailam complex. In case

rest of AP/SR does not survive, N’Sagar- units would be self-started with

minimum loads(KM Palli) and supply would be extended to Talapalli.

Simultaneously units at Srisailam (RB) would be started up and synchronised

with N’Sagar units. Loads would be extended by closing Srisailam-Mydukur

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line and afterwards extending the same to Cuddapah-Chinakampalli-Muddanur

for starting up of units.

Srisailam (LB) would be started up and power extended to Kurnool. Meanwhile

the N’Sagar-Srisailam(RB) complex would extend supply to Kurnool and

synchronise with Srisailam(LB) at Kurnool. After the island has reached 700-

1000 MW, the 400 kV Talapalli-Hyderabad line would be usedto synchronise

Ramagundam-Hyderabad island with Srisailam-N’Sagar island. The Kurnool-

Hyderabad 400 kV would also be closed to strengthen the link.

Only incase Ramagundam island failed to survive, it can be connected to WR

through AC by-pass at Ramagundam for availing start-up power to NTPC

Ramagundam.

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SUB SYSTEM 2

SUB SYSTEM 1

SUB SYSTEM 3

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5.6 RESTORATION OF SUB SYSTEM 1

The sub-system 1 comprises of major thermal stations viz. VTPS, LANCO, RYTPS,

SEPL , MEPL & Krishnapattinam AP and the important load centers like Hyderabad,

Vijayawada, Kurnool, Machilipatnam & Nellore along with Black Start facilities at

Srisailm & N’Sagar Hydro stations

5.6.1 AVAILING START-UP POWER

This subsystem can avail start up power supply from the following sources

A. During Total Regional Blackout and / or Total Blackout of AP system

� Self-start N’Sagar and avail startup power from N’Sagar through

220kV N’Sagar – Tallapalli to VTPS, VTPS U#7 & to Lanco via VTPS-

Kondapalli-Lanco & to Lanco(ISGS) via VTPS-Nunna-Lanco4

� Self-start Srisailam RB and avail startup power from Srisailam RB

through Mydukur – Kadapa – Chinkampally – Muddanur to RYTPS

� Extend startup power from Srisailam RB to SEPL/ MEPL Srisailam

RB – Markapur-Podili/Ongole –Nellore 220 – Nellore 400 –

SEPL/MEPL

� Synchronise 220kV Srisailam – N’Sagar

B. During Blackout of Sub system 1 alone

� From KTPS through 220kV KTPS – Nunna – VTPS, VTPS U#7 & & to

Lanco via VTPS-Kondapalli-Lanco & to Lanco(ISGS) via VTPS-

Nunna-Lanco4

� From Vijjeswaram/Shimadri through Bommur - Vijjeswaram stage1 –

Bhimadole- Nunna – VTPS & & to Lanco via VTPS-Kondapalli-Lanco

& to Lanco(ISGS) via VTPS-Nunna-Lanco4

� Self-starting of Hydro systems of Srisailam – N’Sagar and through

220kV N’Sagar – Srisailam RB - Mydukur – Kadapa – Chinkampally –

Muddanur to RYTPS

� Extending startup power from Srisailam RB to SEPL/ MEPL Srisailam

RB – Markapur-Podili/Ongole –Nellore 220 – Nellore 400 – Nellore PS

SEPL/MEPL

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� Extending startup power from Srisailam RB to Krishanapattinam AP

Srisailam RB – Markapur-Podili/Ongole –Nellore 220 – Nellore 400 –

Krishnapattinam APFrom TN System through 400kV Almatty – Nellore–

SEPL/MEPL

� From TN System through 400kV Sriperumpudur – Chittoor – Kadapa &

220kV Kadapa – RYTPS

� From Karnataka System through 400kV Kolar – Kadapa & 220kV

Kadapa – RYTPS

� From Karnataka System through 400kV RTPS – Mahboobnagar –

N’Sagar

� Through 220kV Tandur – Sedam line

� Through 220kV Gooty –Regulapadu- Bellary (Alipur) line

5.6.2 RESTORATION OF THE SUBSYSTEM 1 DURING TOTAL BLACKOUT OF

AP SYSTEM.

This subsystem will be developed after availing startup power supply as

mentioned in 5.6.1 (A). The restoration process is as follows:

(a) Self-start one unit at N’Sagar with 90 MW generation while supplying

loads at N’Sagar (60 MW) local loads and extend startup supply to VTS

via 220kV S/C Talapalli line.

(b) Self-start one unit at Srisailam RB with local loads of 20 MW &

Simultaneously, syncronise Srisailam-N’Sagar.

(c) Extend supply to RYTPP via 220kV Mydukur (20MW) – Kadapa (30MW)

– Chinkampally –Muddanur (30MW). Simultaneously start two units at

Srisailam RB and increase the generation to meet the loads

(d) Extend start up supply to VTPS U#7 from VTS 220kV

(e) Extend supply to SEPL/MEPL via 220kV Markapur(10MW) -

Podili/Ongole (10MW) – 220kv Nellore (10MW) – 400kv Nellore. Extend

startup power to LANCO through 220kV VTS – Kondapalli line.

(f) Extend supply to Chandrayengutta via Dindi and supply to important

loads at Hyderabad.

25 of 206.


(g) If Self-start of Srisailam LB is not available then Extend supply from

Srisailam RB to 220kV ( AP Carbide) Kurnool (100MW). via

Somayajulapalli and Extend supply from Chandrayangutta to

Mamidapally.

(h) If self-start of Srisailam LB is available then Self-start Srisailam LB &

extend to Kurnool 400 kV and supply important loads. Simultaneously

charge 400 kV Srisailam-Mamidapally line and supply to important loads

at Hyderabad.

(i) Self-Start Jurala (if water available) and extend to dindi via

Mehboobnagar-Boothpur-Kalvakurthi for synchronization at dindi

(j) Extend startup power to LANCO (ISGS) through 220kV VTS – 220KV

Nunna – 400kv Nunna -line.

(k) Extend supply to Khamam from N’Sagar & Energise Khamam 400 kV.

� The subsystem 1 is developed by gradually increasing the generation in

the subsystem and extending supply to loads of Podili, Tadikonda,

Gunadala, Nunna, Hyderabad.

� This subsystem 1 can be synchronised with subsystem 3 at KTS

through 220kV D/C KTS-Khamam line.

� Subsequently 400 kV Nunna - Khammam, Nunna -Srisailam,

Mamidapalli - Ghanapur, N’Sagar - Khammam would be taken up

whenever voltage permits. Warangal 400 kV would be energized.

� Sub System 2 & rest of A.P would be synchronized at Ramagundam

through 400 kV Ramagundam – Warangal / Khammam line after

matching the frequency of both subsystems.

� AP Hydro would be flexed to minimize flow on Ramagundam -

Chandrapur line & subsequently this would be tripped.

26 of 206.


27 of 206.


5.6.3 ACTIONS TO BE TAKEN BY VARIOUS GENERATING STATIONS OF AP

IN RESTORING SUBSYSTEM 1 DURING TOTAL REGIONAL BLACKOUT

AND / OR BLACKOUT OF ENTIRE AP SYSTEM

(a) At N’SAGAR:

� Ascertain the Total Blackout in AP System or Southern Region.

� Open all the lines connected to N’Sagar.

� Self-start one unit at N’Sagar with 90 MW generation while supplying

loads at N’Sagar (60 MW) and extend startup supply to VTS via 220kV

S/C Talapalli line

� Co-ordinate with Srisailam RBPH and synchronise N’Sagar – Srisailam

RBPH lines with gradual increase of generation in line to connected

loads in the part system.

� After stable operation of subsystem 1 with generation of N’Sagar,

Srisailam, VTS and RYTPS and connected load and synchronization of

Srisailam – Kurnool 400kV line, Synchronise the N’Sagar – Khammam

400kV line

(b) At TALLAPALLY:

� Keep 220kV Tallapally – VTS line in open condition.

� After getting energized the 220kV bus through N’Sagar – Tallapally

line, extend supply to VTS by synchronizing 220kV Tallapally – VTS

line

� Connect the Loads at Tallapally area

(c) At VTS:


� Open all the lines connected to VTS.

� After getting energized the 220kV bus at VTS through 220kV Tallapally–

VTS line, extend the supply to unit auxiliary/station supply.

� Extend startup power to VTS-VI via 220 kV

28 of 206.


� Charge 220kV VTS – Kondapally line and extend startup power to

LANCO.

� Charge 220kV VTS – Nunna line and extend startup power to

LANCO(ISGS) via 400KV Nunna.

� Charge 220kV VTS – Nunna- Bhimadolu line and connect the loads as

per the level of generation.

(d) At SRISAILAM RBPH:


� Open all the lines connected to Srisailam RBPH

� Self-start one unit of Srisailam RBPH with local loads of 20 MW and

simultaneously Synchronise 220kV Srisailam RBPH – N’Sagar

� Extend supply to Mydukur through 220kV Srisailam RBPH -Mydukur

line

� Extend Supply to Dindi through 220kV Srisailam RBPH – Dindi line and

request for connecting loads at Dindi

� Extend supply to YG Palem through 220kV Srisailam RBPH – Dornala

and request Dornala to connect loads

� Extend supply to Podli through 220kV Srisailam RBPH – Podli line and

request Podli to connect loads with gradual increase in generation.

(e) At DINDI:


� Open all the lines connected to Dindi

� Avail supply from Srisailam RBPH and charge the 220kV bus.

� Extend supply to CH gutta in consultation with SLDC regarding

Ramagundam island status

� Avail supply from Kalwakurthy and synchronise

(f) At CHANDRAYANGUTTA:


29 of 206.


� Open all the lines connected to CH gutta in consultation with SLDC

regarding status of Ramagundam island.

� Avail supply from Dindi and charge the 220kV bus.

� Connect the local loads

� Extend supply to Jubliee Hills through 132kV line

� Charge / Synchronise the Mamidipally 220kV line as per direction of

SLDC

(g) At SRISAILAM LBPH:


� Open all the lines connected to Srisailam LBPH

� Self-start unit at Srisailam LBPH unit

� Charge 400kV Srisailam LBPH – Karnool line and request to connect

the local loads at Karnool

� Start other units one by one with gradual increase in load at Kurnool

and Voltage profile around 400kV.

� Controlling the voltage at Srisailam LBPH around 400kV, charge 400kV

Srisailam LBPH – Mamidipally line and request to connect the loads at

Mamidipally in consultation with SLDC regarding Ramagundam island

status.

(h) At MAMIDIPALLY:


� Open all the lines connected to Mamidipally

� Avail supply through 400kV Srisailam LBPH – Mamidipally line or

220kV CH gutta – Mamidipally line in consultation with SLDC regarding

Ramagundam island status.

� Connect the local loads at Mamidipally

� Charge / Synchronise the other line as per direction of SLDC.

30 of 206.


(i) At MYDUKUR:


� Open all the lines connected to Mydukur.

� Avail supply through Srisailam RBPH and energise the 220kV bus at

Mydukur.

� Connect the local loads at Mydukur

� Extend supply to Kadapa

(j) At KADAPA (220kV):


� Open all the lines connected to Kadapa

� Avail supply from Mydukur and energise the 220kV bus at Kadapa.

� Connect the local loads at Kadapa

� Extend supply to Chinakampalli

(k) At CHINAKAMPALLI:


� Open all the lines connected to Chinakampalli

� Avail supply from Kadapa and energise the 220kV bus at

Chinakampalli.

� Connect the local loads at Chinakampalli

� Extend supply to RYTPP

� Charge / Synchronise Chinakampalli – Renigunta 220kV line

(l) Action at RYTPP:

� Open all the lines

� Avail Start up supply from

- Chinkampally ( N’’Sagar / S’Sailem/ Kolar - Kadapa / S’P Budur-

Chittor- Kadapa) or

- Ananthpur ( Through Nelamangala / Hoody – Gooty 400kV Line )

31 of 206.


� Start the generation at RYTPP and Synchronise.

� Extend supply to Yeraguntala and request for connecting local loads at

Yeraguntala

(m) At PODLI:


� Open all the lines connected to Podli

� Avail supply through Srisailam RBPH and energise the 220kV bus at

Podli.

� Connect the local loads at Podli

� Extend supply to Ongole for Traction Supply

� Extend Supply to Nellore for Traction Supply

(n) At ONGOLE:


� Open all the lines connected to Ongole

� Avail supply from Podli and energise the 220kV bus at Ongole.

� Connect the Traction loads & local loads at Ongole

� Charge / Synchronise 220kV Ongole – Nellore line in consultation with

Nellore 220kV S/S

(o) At NELLORE:


� Open all the lines connected to Nellore

� Avail supply from Podli / Ongole and energise the 220kV bus at

Nellore.

� Charge Nellore 400kV & Extend startup power to SEP/MEPL Connect

the Traction loads & local loads at Nellore

� Extend supply to Manubolu and Sullurpet

� Charge / Synchronise 220kV Nellore – Manubolu line

32 of 206.


(p) At RENIGUNTA:


� Open all the lines connected to Renigunta

� Avail supply from Manubolu / Chinakampalli and energise the 220kV

bus at Renigunta.

� Connect the Traction loads & local loads at Renigunta

� Extend supply to 220kV Chittor through 220kV Mahadeva Mangalam

and request to connect local loads

� Charge / Synchronise 220kV Nellore / Chinakampalli feeders as the

case may be.

(q) At CHELLAKURTHY:


� Open all the lines connected to Chalakurthy

� Avail supply from N’Sagar and charge the 220kV bus.


� Extend supply to Miryalguda & KM Palli

(r) At MIRYALGUDA:


� Open all the lines connected to Miryalguda

� Avail supply from Chellakurthy and charge the 220kV bus.


� Extend supply to Khammam

33 of 206.


(s) At KHAMMAM:


� Open all the lines connected to Khammam

� Avail supply from Miryalguda and charge the 220kV bus.


� Charge the 400 / 220kV ICT and energise the 400kV bus

� Wait for the instruction of SLDC / RLDC for synchronizing the 400kV

lines.

(t) At Lanco(ISGS) :


� Open all the outgoing lines

� Avail start up supply from Vijaywada 400kV after getting clearance from

RLDC

(u) At SEPL/MEPL:



� Avail start up supply from Nellore PS 400kV after getting clearance

from RLDC

(v) At Krishnapattinam AP:



� Avail start up supply from Nellore 400kV after getting clearance from

RLDC

34 of 206.


5.6.4 PROCEDURE FOR AVAILING STARTUP POWER DURING PARTIAL

BLACKOUT OF SUB-SYSTEM – 1 ALONE

As already explained earlier in clause 5.6.1 (B), during the restoration of

Subsystem 1 alone start up power can be availed from other subsystems

through

� From KTPS through 220kV KTPS – Nunna – VTPS

� From Vijjeswaram/Shimadri through Bommur - Vijjeswaram stage1 –

Bhimadole- VTPS.

� Self-starting of Hydro systems of Srisailam – N’Sagar and through

220kV N’Sagar – Srisailam RB - Mydukur – Kadapa – Chinkampally –

Muddanur to RYTPS

� From TN System through 400kV Sriperumpudur – Chittoor – Kadapa &

220kV Kadapa – RYTPS

� From Karnataka System through 400kV Kolar – Kadapa & 220kV

Kadapa – RYTPS

� From Karnataka System through 400kV Neelamangala – Gooty /

Sommanahally – Gooty & 220kV Gooty – Ananthapur – Muddanur -

RYTPS


RB – Markapur-Podili/Ongole –Nellore 220 – Nellore 400- Nellore PS –

SEPL/MEPL


RB – Markapur-Podili/Ongole –Nellore 220 – Nellore 400-

Ksishnapattinam AP

� From TN System through 400kV Almatty – Nellore-Nellore PS–

SEPL/MEPL

� From Srisailam & N’Sagar complex as explained in clause 5.6.1 (A)

� After startup power is available for VTPS & RYTPS, further extend for

restoration of this sub-system may be initiated as explained in 5.6.2 &

5.6.2.1 above

35 of 206.


5.7 RESTORATION OF SUB SYSTEM – 2

The sub-system 2 comprises of Ramagundam & Kakatiya Thermal power station and

the important load centers like Ramagundam loads & Western Region with No Black

Start facilities in the Sub system.


Presently this subsystem has an islanding scheme for NTPC Ramagundam

along with Hyderabad loads. Incase of survival of this subsystem in islanding

mode, the island could not be connected to WR through AC by-pass at HVDC

Badravathi as the frequency of WR and surviving island would be different

and flexing generation / loads of the surviving island for matching to WR

frequency may be very difficult and may lead to collapse. Also, attempt to

avail support through Badrawathi HVDC Back-to-Back by synchronizing

Ramagundam – Chandrapur lines, with out building the island to sufficiently

large size, is not preferable due to low short circuit level at HVDC Badrawathi.

Under such situation, the surviving island has to be synchronized with rest of

AP at the earliest possible with increase in hydro generation along with

matching loads in other subsystems of AP.

Incase, the islanding scheme could not survivie, then, this subsystem can

avail start up power supply from the following sources

36 of 206.



� From Western Region through HVDC Back to Back station at

Bhadrawati (Chandrapur) with A/C bypass arrangement and 400kV

Chandrapur- Ramagundam D/C. line

� From Subsystem 1 by availing self-starting facility of hydro units at

N’sagar / Srisailam complex.


� From KTPS through 220 kV KTPS – Khammam – Warangal-Nagaram-

Malayalapalli-Ramagundam

� From 220Kv N’Sagar – Chellakurthi – Miryalguda – Khammam –

Warangal – Ramagundam lines

� From KTPS 5th Stage through

- 220 kV KTPS- Budidampadu (Khammam 400 kV)

- 400 kV Khammam –Ramagundam line

� From VTPS through

- 220 kV VTPS-Nunna &

- 400 kV Vijayawada-Khammam-Ramagundam

� From Srisailam, N’sagar Hydro complex through

- 220 kV N’sagar – Tallapalli

- 400 kV N’sagar – Ramagunadam


AP SYSTEM.

This subsystem will be developed after availing startup power supply as

mentioned in 5.7.1 (A). The restoration process is as follows:

1. Extend startup supply to Ramagundam & Kakatiya from Western region

through Chandrapur A.C bypass link, following procedure as follows.

(a) Ensure that line breakers of 400 kV Ramagundam-Chandrapur lines I

and II are opened at Ramagundam & Chandrapur end

(b) Ensure that HVDC system is isolated from both West and South Bus.

37 of 206.


(c) Ensure that all filter Isolators are opened.

(d) Ensure that West Bus 2 is in energized condition

(e) Close A/C bypass link isolators

(f) Close breaker of Ramagundam line I or II in consultation with

Ramagundam. This would extend start up power to Ramagundam.

(g) In case the bus voltage at Ramagundam is very high, request AP to

avail some loads radially to control the voltage.

(h) Extend startup supply to Kakatiya via 400kv Ramagundam –

Warrangal-Bhoopalpally alternately via 220kv Malayalapalli-220 kv

Nagaram- 220 kv Warrangal -400kv Warrangal

(i) Ramagundam would build up the generation gradually with load

through ICTs at Ramagundam.

The subsystem 2 is developed by gradually increasing the generation in the

Ramagundam and extending supply to loads of Ramagundam.

Sub System 2 & rest of A.P would be synchronized at Ramagundam

through 400 kV Ramagundam – Warangal / Khammam line after

matching the frequency of both subsystems.

AP Hydro would be flexed to minimize flow below 20MW on

Ramagundam - Chandrapur line & subsequently this would be tripped.

2. Incase of any difficulties in extending startup supply to Ramagundam from

Western region through Chandrapur A.C bypass link, avail startup power

from N’Sagar Complex through 400kV N’Sagar – Hyderabad -

Ramagundam lines along with loads at Hyderabad for controlling the

voltage profile.

38 of 206.


39 of 206.


40 of 206.


5.7.3 ACTIONS TO BE TAKEN BY VARIOUS GENERATING STATIONS AND

HVDC OF AP IN RESTORING SUBSYSTEM 2 DURING TOTAL REGIONAL

BLACKOUT AND / OR BLACKOUT OF ENTIRE AP SYSTEM & NON-

SURVIVAL OF RAMAGUNDAM ISLANDING SCHEME.

(a) Actions by HVDC Bhadrawati

Upon receipt of request from Ramagundam for providing start up power

Bhadrawati will make the following arrangements to extend the start up

power.

� Ensure that line breakers of 400 kV Ramagundam-Chandrapur lines I

and II are opened at Ramagundam & Chandrapur ends

� Ensure that HVDC system is isolated from both West and South Bus.

� Ensure that all filter Isolators are opened.

� Ensure that West Bus 2 is in energized condition

� Close A/C bypass link isolators

� Close breaker of Ramagundam line I or II in consultation with

Ramagundam

� This would extend start up power to Ramagundam STPS & Kakatiya.

(b) Actions by RSTPS

� Ensure all 400 kV line breakers open at Ramagundam end.

� Avail start up supply from HVDC station at Bhadrawati through one of

the circuits of 400kV Ramagundam-Chandrapur line for starting the

unit.

� In case the bus voltage at Ramagundam is very high, request AP to

avail some loads radially to control the voltage.

� Extend start up supply to Kakatiya via Warrangal-Bhoopalpally

� Ramagundam would build up the generation gradually with load

through ICTs at Ramagundam.

(c) Actions by KAKATIYA

� Open all 400 kV line breakers.

41 of 206.


� Avail start up supply from Ramagundam via 400kv Warrangal in

consultation with SLDC.

� Kakatiya would build up the generation.

(d) Actions By APLD

� Provide the loads for Ramagundam generators through ICTs at

Ramagundam in coordination with RSTPS.

� Loads to be regulated keeping in view the level of generation at

Ramagundam and import constraints as per the directions of SRLDC.

Note: SRLDC/WRLDC Control Room, Ramagundam and Bhadrawati HVDC

stations shall endeavor to confirm the actions to be taken in the event of Total

Black-out in the AP system. However, extension of WR power to

Ramagundam shall be carried out at the request of Ramagundam without

waiting for any code from SRLDC /WRLDC except that before extending the

supply, Bhadrawati shall interact with Ramagundam and obtain clearance

from Ramagundam for its readiness to avail the power supply.

5.7.4 PROCEDURE FOR AVAILING STARTUP POWER SUPPLY FROM WITH IN

AP SYSTEM

In the event of difficulty in availing WR supply for any reason, the alternate

source for availing start up power to Ramagundam & Kakatiya would be from

N’sagar or Srisailam Hydel power stations In this case the following steps

would be followed.

(a) Supply from N’sagar or Srisailam power house would be extended to

Tallapally.

(b) 220 kV supply from Tallapally would be extended and stepped up to 400

kV by charging one of 220/400 kV 315 MVA transformers at 400 kV

N’sagar sub station.

(c) Before extending 400 kV supply from N’sagar to Ramagundam, the

voltage at N’sagar would be controlled by utilising bus reactor, line

reactor provided at both ends of 400 kV N’sagar-Ramagundam line and

if required by varying ICT taps at N’sagar.

42 of 206.


(d) In case 400 kV voltage at N’sagar is not brought under control by using

reactors and ICT taps at N’sagar, 400 kV supply from N’sagar should be

extended to Hyderabad and voltage at Hyderabad could be controlled by

connecting loads through ICT at Hyderabad. Supply to Ramagundam

can be extended by charging one of the 400 kV lines from Hyderabad to

Ramagundam and NTPC can avail start up power by charging

Ramagundam bus.

(e) Once Startup is given to Ramagundam, Then extend start up power from

to Kakatiya as explained above

5.7.5 SYNCHRONISING SUBSYSTEM – 2 (RAMAGUNDAM & KAKATIYA) WITH

REST OF A.P AND OPENING OF AC BY-PASS LINK WITH WR

As the Subsystem 2 builds up it has to be synchronised with rest of AP at the

earliest opportunity to increase the stability of the\ grid. This Subsystem can

be synchronised with rest of A.P by closing 400 kV Warangal / Khammam -

Ramagundam line. Tying of subsystem to be done preferably at 400 KV level

only. Once the Northern part of AP grid is adequately strengthened and

stabilised, RLDC shall request WRLDC to withdraw the assistance from WR.

The following steps shall then be taken to open out the AC bypass link at

HVDC Bhadrawati.

� After the AP system develops into a stable island of about 2500 to

3000MW, A/C inter connection with WR will be opened out only after

reducing the flow on the interconnection to a minimum value by adjusting

the load generation balance in AP Subsystem.

� Load in AP system would be regulated to bring down the flow on 400 kV

Ramagundam-Chandrapur line as minimum as possible (10 to 20 MW) by

regulating generation at N’sagar, Srisailam and Chandrapur (WR).

� NTPC would then manually open 400 kV Ramagundam-Chandrapur line

to separate part SR system from WR system in consultation with SRLDC /

Bhadrawati.

Opening of A/C Bypass Link At Bhadrawati:

43 of 206.


� Bhadrawati shall obtain permission from WRLDC and SRLDC to open out

the A/C bypass link.

� Breaker controlling Ramagundam I and II lines shall be opened.

� Open breaker of MSEB-2 controlling West Bus-2.

� Check that West Bus and South Bus is dead.

� Open A/C bypass link isolators

� Prepare the HVDC station for operation in Back to Back Convertor mode

and then await instructions and code exchange between WRLDC and

SRLDC.


BLACKOUT OF SUB-SYSTEM – 2

In the event of Partial Black out in AP system and Subsystem 2 alone going

into black out startup power for Subsystem 2 will be made available from any

one of the neighboring Subsystem in AP and the procedure is detailed below

A. From KHAMMAM

� Charge 400 kV Ramagundam – Warangal / Khammam line at

Warangal / Khammam

� Charge 400 kV Switchyard at Ramagundam and avail start up power

B. From WARANGAL

� Charge 220 kV Warangal-Nagaram-Malayalpalli switching sub-station

� Charge 220 kV Malayalpalli-Ramagundam line-1 or line-2 or line-3

� Charge 220 kV/400 kV Auto Transformer-3, 4 or 5 and avail start up

power supply

C. From N’SAGAR / SRISAILAM Hydro Complex

� Procedure as detailed in section 5.7.4

44 of 206.


In case of Sucessful Islanding of Ramagundam- Hyderabad Scheme Sub

System 2 & rest of A.P would be synchronized at 400kV Ghanapur – N’Sagar at

N’Sagar End and 400kV Ramagundam – Warrangal – Khamam at Ramagundam

end.

45 of 206.


46 of 206.


5.8 RESTORATION OF SUB SYSTEM 3

The sub-system 3 comprises of major thermal stations viz. KTPS, Simhadri & Gas

Stations viz Jegrupadu, VGTS-2, Spectrum and BSES and the important load

centers like Vizag, Kakinada along with Black Start facilities at U’Sileru, L’Sileru ,

Donkarai Hydro stations, Vijjeswaram stage1 gas Station.


To restore this Subsystem Startup power can be availed from the following:


� From Eastern Region through HVDC Back to Back station at

Gazuwaka with A/C bypass arrangement and 400kV Gazuwaka -

Jeypore D/C. line (First Option)

� From Lower Sileru, Upper Sileru & Donkarai hydro units through

• 220kV L.Sileru – Donkarai - U.Sileru – Pendurthy – Gazuwaka &

400kV Gazuwaka – Simhadri (Gazuwaka – Kalpakka - Simhadri

line will be used as alternate path instead of Gazuwaka – Simhadri)

• From Lower Sileru to KTPS

• From Lower Sileru - 220KV KTPS – 220 KV Khammam-400kV

Khamam – KTPS VI

� From GMR Barge units through

• From GMR Barge to PD Puram - BSES

• From GMR Barge to Bommur – 220kV Vemagiri – 400kV Vemagir –

Vemagiri gas complex


� From L.Sileru / U.Sileru / Donkarai as detailed in 5.8.1 (A)

� From GMR Barge as detailed in 5.8.1 (A)

� From Subsystem 1 through

• 220kV N’Sagar – Chellakurthi – Miryalguda – Khammam lines

47 of 206.


• 220kV VTS –NUNNA- Bhimadole- Vijjeswaram stage1 – Bommur –

Peddapuram – Parwada -Gazuwaka & 400kV Gazuwaka-

Kalpakka-Simhadri

• 220kV VTS – KV Kota - Vijjeswaram stage2 – Bommur –

Peddapuram – Parwada – Gazuwaka & 400kV Gazuwaka –

Kalpakka – Simhadri

• 220kV Vijjeswaram stage1 – Bommur - L.Sileru – KTPS & KTPS VI

5.8.2 RESTORATION PROCESS FOR SUBSYSTEM 3 DURING TOTAL

BLACKOUT OF AP SYSTEM

5.8.2.1 In case of total blackout of AP System

a) The First option for Simhadri startup is through AC Bypass of Gazuwaka

HVDC & Extending ER Supply to Simhadri. On exercising this option,

Start-up supply to be extended to Vemagiri complex through Gajuwaka –

Parwada – Peddapuram – Bommur 220kV lines or Gajuwaka –

Pendurithi – U.Sileru – Donkarai – L.Sileru – Bommur 220kV lines.

Subsequently, builtup an island with Simhadri, Vemagiri Complex &

Sileru generation along with matching loads at Vizag, Pendurithi,

Bommur etc to an extend of 1000MW – 1500MW. After building-up the

island, flexing the Sileru hydro generaion, delink the island from N-E-W

grid at HVDC Gajuwaka by tripping the 400kV AC inter connector feeder

to Gajuwaka ICT.

b) Alternately, Self-start Lower Sileru and extend startup supply (20MW) to

KTPS through 220kV L.Sileru – KTPS line

c) Extend start up supply to KTPS VI from 220KV KTPS – 220 KV

Khammam-400kV Khamam – KTPS VI as the first option. 400kV

Ramagundam – 400kV Warrangal – 400kV Khammam – 400kV KTS VI

will be second option if voltage permits

d) Simultaneously startup Upper Sileru and extend 220kv supply to

Gazuwaka via Donkarai – Upper Sileru – Pendurthi (50MW) – Gazuwaka

(20 MW) and further extend startup supply to Simhadri via Gazuwaka –

Simhadri 400kV line.

48 of 206.


e) Simultaneously Donkarayi can be started

f) Simultaneoulsy start up GMR Barge and extend start up supply to

BSES(via PD Puram)..

g) Extend supply to Bommur from GMR Barge via PDPuram as the first

option and from Lower Sileru as the second option and both can be

synchronized at Bommur

h) Extend startup supply to Jegrupadu, VGTS-1 VGTS-2 & Spectrum (via

Kakinada)

i) From Bommur extend supply to Gazuwaka (PG) via Kakinada /

PDPuram and then to Simhadri (Option # 3 for Simhadri startup).

j) Extend Start Up supply to Vemagiri Gas Complex via Bommur –

Vemagiri 220kv / 400 Kv.

49 of 206.


50 of 206.



SUB-STATIONS DURING TOTAL REGIONAL BLACKOUT AND / OR

TOTAL BLACKOUT IN AP SUBSYSTEM – 3

(a) At LOWER SILERU

� Ascertain the Total Blackout in AP System or Southern Region

� Open out all outgoing lines

� Self-start the machine

� Extend supply to KTPS

� Charge / Synchronise 220kV L.Sileru – Donkarai line

� Extend supply to Bommur through 220kV L.Sileru – Bommur line for

connecting Traction loads at Bommur.

� Incase any delay / difficulties in self-start L.Sileru Units, first avail supply

from Donkarai

(b) At KTPS


� Follow the instructions of SLDC for any operation

(c) At DONKARAI




� Charge / synchronise 220kV Donkarai – U.Sileru line

� Charge / Synchronise 220kV Donkarai – L.Sileru line

� Incase any delay / difficulties in self-start Donkarai Units, first avail

supply from U.Sileru / L.Sileru as the case may be and then proceed

the steps above

51 of 206.


(d) At BOMMUR

Bommur is a very important substation from the point of Black Start Procedure

since it connects to Subsystem 1 through Bommur – Vijjeswaram stage2 - KV

Kota – VTS. It also connects to all the gas stations of this Subsystem.

Following are the actions to be taken at Bommur.

Ascertain the Total Blackout in AP System or Southern Region


� Avail supply from GMR Barge via PDPuram in consultation with APLD.

� Incase any delay / difficulties in self-starting GMR Barge Units, first

avail supply from U.Sileru / L.Sileru as the case may be and then

proceed the steps below

� Connect limited local loads

� Extend startup power to Jegrupadu

� Extend startup power to Spectrum through 220kV Bommur – Kakinada

line

� Extend startup power to BSES through 220kV Bommur – Peddapuram

line

� Charge / Synchronise 220kV Bommur – Vijeswaram stage – 2 line &

Bommur – Vijeswaram stage – 1 line

(e) At VIJJESWARAM STAGE - 1



� Avail Start Up supply from Bommur.

� Extend power supply to Bhimadole

(f) At UPPER SILERU




52 of 206.


� Charge / synchronise 220kV Donkarai – U.Sileru line

� Extend supply to Pendurthy traction lopads through 220kV U.Sileru –

Pendurthy line

(g) At PENDURTHY



� Avail supply from Upper Sileru

� Extend supply to Gazuwaka

� Extend supply to traction loads in consultation with APLDC.

(h) At PEDDAPURAM



� Avail supply from Bommur

� Charge 220kV Peddapuram – Parwada line.

� Extend startup supply to BSES.

(i) At PARWADA



� Avail supply from Peddapuram

� Charge / Synchronise 220kV Parwada – Gajuwaka line.

(j) At GAZUWAKA 220kV & 400 kV A.C



� Avail 220kV supply from Pendurthy / Parwada.

� Charge 400/220 kV Transformer

� Extend 400kV supply to Kalpakka / Simhadri

53 of 206.


(k) At KALPAKKA



� Avail 400kV supply from Gazuwaka 400kV

� Extend startup supply to Simhadri.

(l) At SIMHADRI



� Avail startup supply for starting the unit from Kalpakka/Gazuwaka

� Build up the generation

(m) At Warrangal 400



� Avail supply from Warrangal 220kv via Nagram

(n) At GMR Barge




� Charge 220kV GMR Barge – PDPuram in consultation with SLDC

In the event of failure / delay in availing startup supply from ER System

for any reason the alternate source for availing start up power to

Simhadri would be from Upper Sileru / Lower Sileru.

The following steps would be followed to avail supply from ER System.

54 of 206.


55 of 206.


(o) Actions by HVDC Gajuwaka

� Upon confirmation of Total AP system failure Simhadri will request

Gajuwaka for making necessary arrangements to operate A/C bypass

system at Gajuwaka HVDC under instructions from SRLDC.

� Gajuwaka shall request Jeypore to extend start up power from Eastern

Region in case supply is not available on East Bus at Gajuwaka

� Gajuwaka shall extend the power supply to South Bus on A/C bypass

mode by taking following actions

a. All filter on either side (East and South) are to be opened.

b. All connections to HVDC system from both East and South side are

opened

c. Ensure that East Bus is in energized condition from Jeypore end.

d. Close isolators to close A/C bypass link.

e. Close 400kV Gajuwaka – Simhadri line in consultation with

Simhadri for extending start up power to Simhadri

NOTE: In the event of total black out in the AP system, start up power can be

obtained / availed from Eastren Region through Gajuwaka HVDC bypass link

as option - 3. Since this line connects two regions using Line Isolators only,

due caution has to be exercised while connecting/disconnecting the two

Regions. The schematic diagram depicting the setup of the HVDC station at

Gajuwaka A/C Bypass link is shown in Exhibit-F.

NOTE Even though, SRLDC,ERLDC AP LD, Control Room Shimadri and

Gajuwaka HVDC station shall endeavor to confirm the actions to be taken in

the event of total Black-out in the AP system extension of ER power to South

bus at Gajuwaka shall be carried out only after availing code by Simhadri or

Gajuwaka.

56 of 206.


(p) Opening of A/C Bypass link

� Once the AP grid is adequately strengthened, SRLDC shall request

ERLDC to withdraw the assistance from ER.

� The following steps shall then be taken to open out the HVDC bypass

link at Gajuwaka

� Action shall be taken by ERLDC and SRLDC to bring the flow on 400kV

Jeypure - Gajuwaka line to +/- 10MW, by regulating generation in AP

and ER system

� Gajuwaka shall obtain permission from ERLDC and SRLDC to open out

the bypass link.

� Open out Jeypore - Gajuwaka line.

� Check that East bus and South bus at HVDC station is dead.

� Open Isolator --- open A/C bypass link.

� Prepare the HVDC station for operation in Back to Back Converter

mode and then await instructions and code exchange between ERLDC

and SRLDC.

(q) Synchonisation of this Subsystem with other Subsystems and

Opening of A/C Bypass Link:-

� As Simhadri generation picks up the load on the ICTs at Kalpakka

would be provided by APLD in a regulated manner keeping in view the

level of generation and import/export constraints as per the directions of

SRLDC.

� Simultaneously AP Subsystem 3 would be built up with fair degree of

load generation balance.

� In consultation with APLD this Subsystem is synchronized with

Subsystems 1 / 3 at the following Locations

� At KTPS through 220kV KTPS V - Khammam line.

� At KTPS through 220kV KTPS – Nunna line.

� At VTPS through 220kV VTPS – Bhimadole- Vijjeswaram stage1

57 of 206.



BALCKOUT OF SUB-SYSTEM–3:

As already explained earlier, during the restoration of Subsystem 3 alone start

up power can be availed from other subsystems through

From Subsystem 1 through

� 220kV D/C KTPS V - Khammam line.

� 220kV S/C KTPS - Nunna line

� 220kV VTS –NUNNA- Bhimadole- Vijjeswaram stage1 – Bommur –

Peddapuram – Parwada -Gazuwaka & 400kV Gazuwaka- Simhadri

� 220kV VTS – KV Kota - Vijjeswaram stage2 – Bommur – Peddapuram –

Parwada -Gazuwaka & 400kV Gazuwaka- -Simhadri

5.9 CRITICAL LOADS IN A.P

a. Heavy Water Plant at Manuguru, KTS 220kV.

b. Vizag Naval Wharf, Ghazuwaka(AP) 220kV.

c. Vizag steel plant, Gazuwaka(PSG) 220kV.

d. DGNP, Vizag(Naval Wharf 132 Kv(220KV Gazuwaka))

e. Ports at Kakinada, Kakinada 220kV.

f. Nuclear Fuel Complex Maulali 220kV.

g. Sriharikota, Sulurpet 220Kv

h. Shamshabad Airport, Mamidapally 220kV

i. Gangavaram Port, Gazuwaka (AP) 220kV

j. Port at Machilipatnam, Gundala 220kV

k. APGENCO KTPP at 132 KV SS Chelpur (220 KV RSS)

l. SCCL Manuguru at 220 KV SS Manuguru

m. SCCL Kothagudem at 220 KV SS Seetharamapatnam

n. SCCL, OCM at 132 KV SS Manthani & Ramagundam (220 KV RSS)

o. Krishnapatnam Port, Nellore District, 132 KV Bramhadevam SS. (220 KV

Nellore)

p. Visakhapatnam Port, 132 KV Port SS, 220 KV Gazuwaka /Pendurthy

58 of 206.


q. Hindustan Zince LTD 220 KV Gajuwaka SS

r. Andhra Sugar,132kv Seggonda (220 KV Nidadavolu)

s. Brandix, 132 KV Brandix SS (220 KV Gazuwaka)

t. GMR Vasavi industries at 220KV Tekkali SS

5.10 SUPPLY DETAILS FOR RAILWAY TRACTION SYSTEM IN A.P

The Traction details are as given below.

59 of 206.

1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 19

Sl. NoRailway

section

Electric

Division

/Circle

Subsyste

m No.220 KV feeding point

132 KV intervining

substation if /132

132 KV tap line

Grid substation Railway Traction Sub

Station

Transfor

mation

capacity

(MVA)

Phase

details

Sanctio-

ned load

in MVA

Average

demand

in MVA

Priority

Emergenc

y

minimum

requireme

nt MVA if

all

substation

s are given

Emergenc

y

minimum

requireme

nt MVA if

alternatvie

substation

s are given

DISCOM

Traction

power

control

centre

1 Manubolu 220 KV -- 1 x 21.6

1 Sullurpet 220KV Naidupeta 1 x 12.5

2 Nellore 1 Nellore 220 KV -- Brhmadevam Niduguntapalem 1 x 21.6 Y - R 6.00 4.14 A2 3 -- APSPDCL

3 Nellore 1 Nelloe 220 KV -- NTS Padugupadu1 x 21.6

1 x 12.5B - Y 14.00 12.61 A2 7 11 APSPDCL

4 Nellore 1 Ongole 220 KV Kandukuru Kavali Kavali 2 x 21.6 R - Y 16.00 14.33 A2 8 -- APSPDCL

5 Ongole 1 Ongole 220 KV -- Ongole Ongole 2 x 21.6 R - B 17.00 16.13 A1 9 13 APSPDCL

1 Paruchuru 220 KV --

1 Tadikonda 220 KV Guntur

7 Guntur 1 Tadikonda 220 KV Guntur Tenali Tenali 2 x 21.6 R - B 15.00 11.55 A1 8 11 APSPDCL

1 Gunadala 220 KV Ganguru/Autonagar

1 Tadikonda 220 KV --

9 Eluru 3 Bhimadolu 220 KV Peddavegi Eluru Vatlur 2 x 21.6 R - Y 16.00 15.71 A2 8 -- APEPDCL

3 Bhimadolu 220 KV --

3 Nidadavolu 220 KV Nidadavolu

11 Rajahmundry 3 Bommuru 220 KV -- Bommuru Rajahmundry1 x 21.6

1 x 12.5R - B 12.00 11.67 A1+ 6 -- APEPDCL

Samalkot 220 KV --

Bommuru 220 KV

Parawada 220 KV Koruprolu Payakaro peta Tuni 2 x 21.6 B - Y 15.00 13.27 A2 8 -- APEPDCL

Pendurthi 220 KV -- Kasimkota Anakapalli 2 x 21.6 R - B 14.00 12.71 A1 7 11 APEPDCL

Renigunta 220 KV

Sullurpet 220KV

15 Tirupathi 1 Renigunta 220 KV -- Renigunta Renigunta 2 x 21.6 R - B 18.00 15.61 A1 9 14 APSPDCL

Chinakampalli 220 KV

Renigunta 220 KV

Kadpa 220 KV - Kadapa

Chinakampalli 220 KV Moolavanka RTSS

Kondapuram 220 KV Gandikota LIS &

Muddanur RTSSMuddanuru

Yerraguntla 220 KV - RTSS

Kalikiri 220 KV Rompicherla

Renigunta 220 KV Tirupathi & KP Mitta

South Central Railway

7.63 A1 5 8 APSPDCL

APSPDCL

19Renigunta

- KatpadiTirupathi 1 Pakala Pakala 2 x 12.5 Y - B 10.00

R - B 12.00 9.68 A2 6 9

14.35 A1 6 -- APSPDCL

18 Kadapa 1 Muddanuru 2 x 21.6

6 9 APSPDCL

17 Kadapa 1 Kadapa 2 x 21.6 B - Y 12.00

Razampeta (220 KV) 2 x 21.6 R - Y 12.00 13.26 A1

7 -- APSPDCL

Traction

power

control /

Guntakal

Phone:

08552-

229679,

97013740

80

Sr.DEE/Tr

action/

Guntakal :

08552-

220037,

97013743

01

Renigunta

- Guntakal

16 Kadapa 1 -- Razampeta 220 KV

Venkatagiri 2 x 12.5 B - Y 14.00 13.08 A214Gudur -

ReniguntaNellore 1 Kalahasthi132KV Venkatagiri

A1 8 12 APEPDCL

13Visakhapa-

tnam3

APEPDCL

12 Rajahmundry 3 Peddapuram Samalkot 2 x 21.6 R - Y 16.00 14.33

Y - B 16.00 12.49 A2 8 12

Vijayawad

a-

Visakhapa

tnam

10 Eluru Pedatadepalli Tadepalligudem 2 x 21.6

18.00 15.36 A1+ 9 14 APSPDCL8 Guntur Tadepalli Krishna canal Junction 2 x 21.6 Y - R

15.00 9.69 A2 8 -- APSPDCL

7 11 APSPDCL

Traction

power

control /

Vijayawad

a

Phone:

0866-

2571739,

97013739

41,

97013739

42

Sr.DEE/Tr

D/Vijayaw

ada :

08662573

117,

97013733

30

6 Guntur Bapatla Bapatla 2 x 12.5 Y - B

DETAILS OF TRACTION SUBSTATIONS IN ANDHRA PRADESH

1

Vijayawad

a -

Chennai

Nellore Gudur Gudur R - B 14.00 11.99 A1

60 of 206.

20Vijayawad

a1 Kondapalli 220 KV Kondapalli Kondapalli 2 x 13.5 B - R 15.00 13.02 A1 8 -- APSPDCL

21 Khammam 1 Chilakallu 220 KV -- Chilakallu Bonakal 2 x 21.6 B - Y 17.00 15.92 A2 9 13 APNPDCL

22 Khammam 3 Budidampadu 220 KV -- Budidampadu Dornakal 2 x 21.6 R - Y 19.00 16.83 A1 10 14 APNPDCL

Sitarampatnam 220

KV--

Budidampadu 220 KV Khammam

Warangal 220 KV

KTPS 132 KV

25 Warangal 2 Warangal 220 KV - Madikonda Kazipet 2 x 21.6 R - Y 15.00 15.39 A1 8 11 APNPDCL

Warangal 220 KV

RTS - B

27 Karimnagar 2 Ramagundam220 KV -- Ramagundam 132 KV Ramagundam1 x 21.6

1 x 13.5Y - R 19.00 17.01 A1+ 10 14 APNPDCL

28 Adilabad 2 Ramagundam220 KV -- Bellampalli 132 KV Bellampalli 2 x 21.6 B - Y 15.00 14.98 A1 8 -- APNPDCL

29 Adilabad 2 Ramagundam220 KV Bellampalli 132 KV Sirpur Kagaznagar Sirpur Kagaznagar1 x 21.6

1 x 13.5B - R 16.00 15.34 A2 8 12 APNPDCL

Warangal 220 KVMadikonda &

Dharmasagara '-

Waddekottapally -

Warangal 220 KV Jangaon

Bhongir 220 KV -

32

Ranga

Reddy

east

1Ghanapur 220 KV

(Hyderabad)-- Ghanapur Ghatkesar 2 x 21.6 R - Y 18.00 16.23 A1 9 14 APCPDCL

Shapur Nagar 220KV --

Gachibowli Erragadda

Tandur 220 KV Pargi

Yeddumailram 220 KV Dharmasagara

35

Ranga

Reddy

South

1 Tandur 220 KV -- Tandur Tandur 1 x 21.6 R - Y 10.00 9.70 A2 5 8 APCPDCL

-- 1 Gooty 220 KV SS -

1 Gooty 220 KV RS -

-- Tadipatri 220 KV -

Gooty 220Kv RSGudipadu &

Ankireddy palli

38Gudur-

ChennaiNellore 1 Sullurpet - Sullurpet Sullurpet 2X21.6 Y-B 13 11.91 A2 9.1 13 APSPDCL

39

Renigunt

a-

Arakkona

m

Tirupathy 1 Renigunta - Puttur Puttur 2X21.6 R-Y 14 12.24 A1 9.8 14 APSPDCL

Southern Railway

TPC/Che

nnai, 044-

2535354

0

10.00 -- A2 5 8 APCPDCL

5 -- APCPDCLTraction

power

control /

Guntakal

Phone:

37 1 Komali Komali 2X21.6 R - B

APCPDCL

36Renugunt

a -

Guntakal

Gooty RTSS Gooty 2X21.6 R - B 10.00 -- A2

B - R 10.00 10.28 A2 5 --

A1 8 11 APCPDCL

34

Ranga

Reddy

South

1Vikarabad

RTSSVikarabad 2 x 21.6

APCPDCL

33Hyderaba

d (HDN)1 Sanath Nagar Sanath Nagar 2 x 21.6 B - Y 15.00 14.19

R - B 16.00 17.53 B 8 1231 Nalgonda 2 Aler 132 KV Aler 2 x 21.6

12.50 11.87 A2 6 -- APNPDCL

9 APNPDCL

30

Kazipet-

Secunder

abad-

wadi

Warangal 2 Raghunathpalli132KV Ghanpur 2 x 21.6 Y - B

2 x 21.6 Y - B 14.00 12.49 A2 7

-- APNPDCL

Kazipet -

Ballarsha

TPC /

Secunder

abad 040-

27823137

,

97013713

47,

97013713

46,

97013713

48

Sr.DEE/T

RD/Secun

d-erabad :

040-

27833031

,

97013713

01

26 Karimnagar 2/3 - Jamikunta Jamikunta

2 x 13.5 R - B 14.00 12.73 A2 724 Warangal 2/3 - Nekkonda Nekkonda

TPC /

Secunder

abad 040-

27823137

,

97013713

47,

97013713

46,

97013713

48

Sr.DEE/Tr

d/Secund-

erabad :

23 Khammam 3 Kothagudam RTSS Badhrachalam Road 2 x 21.6 Y - B 12.00 9.68Vijayawad

a -KazipetA1 6 6 APNPDCL

61 of 206.

40Khurda-

Palasa3

Srikakula

mTekkali - Palasa Baruva 1X21.6 R-B 14 14.2 A2 7 14 APEPDCL

Traction

power

control/

Kurdha-

Road,

0674-

2491538

41 3 Garividi Tekkali - Tekkali Naupada 2X21.6 Y-B 13 13.8 A1 7 13 APEPDCL

Tekkali - Tekkali 1X21.6

Garividi Pydi Bhimavaram C.K.Palem 1X12.5

Garividi -

PendurthyGoldstar & TB

VaraOntithadi

Pendurthy - 1X21.6

Gajuwaka 1X12.5

Gajuwaka -

PendurthySimhachalam &

ACC

Pendurthy Goldstar 1X13.5

Garividi - 1x12.5

Garividi T.B.Vara

Pendurthy Goldstar & TB Vara

Garividi T.B.Vara

Pendurthy Goldstar & TB Vara

Garividi T.B.Vara

Pendurthy Goldstar & TB VaraAPEPDCL

East Coast Railway

R-Y 9 8.8 A1 5 9

A2 7 13 APEPDCL

49 3 Paaderu Araku Gorapur 1X12.5

APEPDCL

48 3 Paaderu Araku Similiguda 2X12.5 B-R 13 11.4

B-R 13.5 13.4 A1 7 13.5

A2 4 7.5 APEPDCL

47 3 Paaderu Araku Tyada 2X12.5

APEPDCL

46

Kottavalsa-

Koraput

3 Paaderu T.B.VaraSrungavarapukota

(SKT)Y-B 7.5 8.6

R-Y 9 9.5 A2 5 945 3Visakha

patnamVSEZ Duvvadda 2X21.6

15 14.7 A1 8 15 APEPDCL44 3Visahka

patnamSimha chalam Simha- chalam R-Y

15 15.6 A1 8 15 APEPDCL

A2 6 11 APEPDCL

43 3Vizia-

nagaramVizia-nagaram 2 x 21.6 R-YPasala-

Duvadda

Traction

power

control

/Visakha-

patnam,

0891-

2746245,

0891-

2705812

42 3 Garividi Ponduru Y-B 11 11.5

62 of 206.


5.11 BLACK START MOCK DRILL PROCEDURE

The procedure for mock drill exercise is as given below.

Step by step procedure for extending of start up Power Supply from Nagarjunasagar

Hydel Power Station to Vijayawada Thermal Power Station

Step 1:

At 220KV Nagarjunasagar switchyard: a. 220 Tallapally feeder-3, 100MVA-1 Transformer and identified generator which is to be

started with Diesel set shall be kept on Bus-I and all other feeders, Generators and Transformer shall be kept on Bus-II.

b. 100MVA-1 Transformer and 132KV Halia feeder with radial load shall be kept on 132KV Bus-I.

c. 132 KV Bus coupler and 220KV Bus coupler shall be opened duly ensuring safe loading on 100MVA-2.

d. 220KV Tallapally feeder-3 shall be kept open.

At 132KV Halia Sub station:

a. Open 132KV ring between Halia and Nalgonda and ensure radial feeding of Halia load from Nagrjunasagar.

b. Also ensure safe loading of 100MVA PTRs at 220KV Narketpally S.S.

Step 2:

At 220KV Tallapally Sub station:

a. 220KV Nagarjunasagar feeder -3 and VTPS-1 feeder shall be kept on Bus-I and all other feeders and ICTs shall be kept on Bus-II

b. Bus coupler- I and II shall be opened. c. Open the Nagarjunasagar -3 and VTPS -1 feeder. OR

a. 220KV VTPS-4 and ICT-3 shall be shifted to Bus section-3 from section -4 b. Open the N’Sagar feeder-3 and VTPS feeder-1 which are on Bus section-3 c. Open Bus coupler between Bus section-3 and 4 d. Open Bus section between 2 and 4

Step 3:

At 220KV VTPS Swith yard:

a. Open the Tallapally feeder- I b. Isolate By pass bus/Transfer Bus from the grid if in service and keep the Tallapally

feeder -1 on By pass bus.

63 of 206.


Step 4:

At Nagarjunasagar Power House and Switchyard:

a. Start the identified generator using D.G set and connect to Bus-I b. Charge 100MVA PTR and feed Halia loads radially. c. Charge 220KV Tallapally feeder -3.

Step 5

At 220Tallapally S.S.

a. Charge Bus-I with Nagarjunasagar feeder -3 and extend supply to VTPS through feeder -1

OR

a. Charge Bus section -4 through Nagarjunasagar feeder-3 and extend supply to VTPS

through feeder -1

Step 6

At 220KV VTPS Switchyard:

a. Charge By pass bus.

Step 7

a. Take out the generator at Nagarjunasagar gradually reducing the load. b. Normalcy shall be restored at Nagarjunasagar switchyard, Tallapally S.S and VTPS

S.S. c. Intimate the logging details at each station to SLDC.

NOTE:

Selection of Bus & Feeders will be finalized by the SLDC Operator in Coordination with

substation and Generating station officers while carrying out Mock exercise.

64 of 206.


Step by step procedure for extending of start up Power Supply from Srisailam Right

Bank Hydel Power Station to Rayalaseema Thermal Power Station

Step 1:

At 220KV Srisailam Right Bank switchyard:

• 220 KV Mydukur feeder and identified generator which is to be started with Diesel set

shall be kept on Bus-I and all other feeders, Generators and 100MVA Transformer

shall be kept on Bus-II.

• 220KV Bus coupler shall be opened.

• Open 220KV Mydukur feeder.

Step 2:

At 220KV Mydukur SS:

• Open HV & LV Breakers of both transformers (50MVA and 31.5MVA) and Cuddapah

feeder breaker.

• Keep Srisailam feeder in closed condition.

• Open 220KV Cuddapah feeder.

Step 3:

At 220KV Cuddapah SS:

• Open HV & LV Breakers of all three 100 MVA transformers.

• Open Chinakampally feeder.

• Arrange alternate supply to the loads of Kadapa SS as extent as possible.

Step 4:

At 220KV Chinakampally:

• Keep RTPP-I and Cuddapah feeder on Bus I and all other feeders and 100 MVA PTR

on Bus -II.

• Open the 220KV Bus Coupler after ensuring safe loading on Bus-II as both the buses

are old.

• Open 220KV RTPP-1 feeder after ensuring safe loading on RTPP feeder-II.

Step 5:

At 200KV RTPP Switchyard:

• Isolate By pass Bus/Transfer Bus from the Grid if in service and keep the

Chinakampally feeder -1 on by pass bus.

• Open Chinkampally feeder -1.

65 of 206.


Step 6:

At Srisailam Right bank Switchyard:

• Start the identified Generator using D.G.Set and connect to Bus-1.

• Charge 220KV Mydukur feeder.

Step 7:

At 220KV Mydukur SS:

• Close HV Braker of 50MVA Transformer and avail 30MW load radial load.

• Extend supply to Cuddapah.

Step 8:

At 220KV Cuddapah SS:

• Extend supply to Chinakampally.

Step 9:

At 220KV Chinakampally:

• Extend Supply to RTPP by charging RTPP feeder-1

Step 10:

At 220KV RTPP Swichyard

• Avail supply from Chinakampally and Charge By pass Bus/Transfer Bus.

Step 11:

• Take out the generator at Srisailam Right bank Power House by gradually reducing the load.

• Normalcy shall be restored at Srisailam Right Bank switchyard, Mydukur S.S, Cuddapah SS, Chinkampally SS and RTPP S.S.

• Intimate the logging details at each station to SLDC.

NOTE:

1. Selection of Bus & Feeders will be finalized by the SLDC Operator in Coordination with


2. As both the buses at Chinakampally are old, it is advisable to carry out Mock exercise after

strengthening of Buses.

3. Also it is advisable to carry out the Mock exercise when one of the RTPP units is under

shutdown as the safe loading on 220 KV Chinakampally – RTPP feeder is to be ensured.

66 of 206.


Step by step procedure for extending of start up Power Supply from Lower Sileru

Hydel Power Station to Kothagudam Thermal Power Station (Old Station)

Step 1:

At 220KV Lower Sileru switchyard:

• 220 KV KTS feeder-1 and identified generator which is to be started with Diesel set

shall be kept on Bus-II and all other feeders, Generators and Transformer shall be

kept on Bus-I.

• Open KTPS-1 feeder breaker

Step 2:

At 220KV KTPS Switchyard (Old Station):

• Keep Lower Sileru feeder-1 on Bus section 3 and all other feeders and Generators

which are on Bus section -3 shall be kept on Bus section-4.

• Open 220KV Bus coupler between Bus Section-3 and 4 and Bus sectionaliser

between Bus section 1 and 3.

• Open Lower Sileru feeder breaker.

Step 3:

At 220KV Lower Sileru Power House and Switchyard:

• Start the identified generator using D.G set and connect to Bus-II

• Charge 220KV KTS Feeder-1.

Step 4:

At 220KV KTPS(Old Station) Switchyard:

• Charge Bus section -3 by closing 220KV Lower Sileru feeder-1

Step 5:

• Take out the generator at Lower Sileru gradually reducing the load.

• Normalcy shall be restored at Lower Sileru switchyard and KTPS S.S.

• Intimate the logging details at each station to SLDC.

NOTE:



67 of 206.


Step by step procedure for extending of start up Power Supply to Thermal

Generating Station from Upper Sileru Hydro Power Station to 400KV Kalpaka

Substation

Step 1:

At 220KV Upper Sileru switchyard:

• Ensure all the 4 Units of Upper Sileru under shutdown.

• Open 220KV Donkarai and Anrock feeders in coordination with Donkarai and Anrock Sub stations.

Step 2:

At 220KV Anrock SS.

• Open 220KV Breaker of Anrock Industry.

• Open 220KV Pendurthy feeder in coordination with Pendurthy SS. Step 3:

At 220KV Pendurthy:

• Keep 220KV Anrock and Dairy farm feeder on Bus-1.

• All other feeders and 3Nos 100MVA Transformers on Bus-2

• Open Bus coupler.

• Open 220KV Dairy farm feeder in coordination with Dairy farm SS. Step 4:

At 220KV Dairy Farm:

• Open 220KV Pendurthy and Kalpaka feeders 1&2 feeders in coordination with Kalpaka SS.

• Open HV side of 100MVA Transformer. Step 5:

At 220KV/400KV Kalpakka SS:

� 220KV Dairy Farm-I feeder and 315MVA ICT-I shall be kept on 220KV Bus-I. � All other feeders and 315MVA ICTs-2 shall be kept at Bus-2. � Open 220KV Bus Coupler between Bus-1 and Bus-2 ensuring safe loading on all

other feeders and ICT-2. � Keep 315MVA ICT-1 on 400KV Bus section -2. � Keep all other 400KV feeders and ICT-2 on Bus section-1 � Open Bus coupler between Bus section-1 and Bus section -2. � Open Bus sectionaliser between Bus section -2 and Bus section -4. � Open LV and HV side breakers of ICT-1.

Step 6:

At Upper Sileru:

� Start the identified Generator using D.G.set and connect to Main bus. � Charge 220KV Anrock feeder.

68 of 206.


Step 7:

At 220KV Anrock SS:

� Charge Bus and Extend supply to Pendurthy SS Step 8:

At 220KV Pendurthy SS.

� Charge Bus-I and extend supply to Dairy farm. Step 9:

At 220KV Dairy Farm

� Avail supply from Pendurthy � Charge 100MVA Transformer and gradually add radial loads up to 30MW. � Extend supply to 220KV Kalpaka by charging 220KV Kalpaka -1 feeder.

Step 10:

At 220KV/400KV Kalpakka SS:

� Charge 220KV Bus-1 through Dairy form feeder-1. � Close the LV Breaker of ICT-1. � Charge 400KV Bus section-2 by closing HV breaker of ICT-1.

Step 11:

� Stop the generator at Upper Sileru � Normalcy shall be restored at all SS. � Intimate the loggings to Load Dispatch

NOTE:



5.12 BLACK START MOCK DRILL SCHEDULE FOR THE YEAR 2014

Sl

No

STATION TYPE CAPACITY

IN MW

SUB

SYSTEM

BLACK START

FACILITY

Mock Drill Schedule

1 LOWER

SILERU

Hydro 460 3 Available June 13/

Dec 13

2 UPPER

SILERU


Dec 13

69 of 206.


3 SRISAILAM LB Hydro 900 1 Available June 13/

Dec 13

4 SRISAILAM

RB


Dec 13

5 N’ SAGAR Hydro 816 1 Available June 13/

Dec 13

*6 JURALA Hydro 195 1 Available June 13/

Dec 13

7 GMR Barge Hydro 237 3 Available June 13/

Dec 13

� Mock drill at Jurala will be conducted when water is available since it is run off river

70 of 206.


6.0 RESTORATION OF KARNATAKA SYSTEM

6.1 SYSTEM OVERVIEW

Karnataka system can be further divided in to two Subsystems which can be brought

up independently and synchronised subsequently once the Subsystems develops in

to larger sustainable islands


Following are the Major Generating Stations in Karnataka system

Sl No

POWER STATION

TYPE SECTOR SUB

SYSTEM CAPACITY

in MW

BLACK START

FACILITY

1 Sharavathy Hydel State 1 1035 Available

2 STRP Hydel State 1 240 Available

3 Varahi Hydel State 1 460 Available

4 Yelahanka Diesel State 1 128 Not available

5 Nagjhari Hydel State 2 885 Available

6 Kaiga Nuclear Central 2 880 Not available

7 Kadra Hydel State 2 150 Available

8 Supa Hydel State 2 100 Available

10 Kodasalli Hydel State 2 120 Available

11 Tata Diesel State IPP 2 79.1 Available

12 Raichur Thermal State 2 1720 Not available

13 Jindal Thermal State IPP 2 1160 Not available

14 Almatti Hydel State 2 290 Available*

15 Bellary Thermal State 2 500 Not Available

16 UPCL Thermal State IPP 1 1200 Not Available

• Can’t take radial load due to hunting of Machines, Irrigation dependent.

71 of 206.


6.3 LIST OF MAJOR SUB-STATIONS WITH SYNCHRONISING FACILITY:

SUB STATION VOLTAGE

LEVEL (KV)

SYNCHRONISING

FACILITY YES/NO

HOODY 400/220 YES

HOODY 220 YES

NELAMANGALA 400/220 YES

RTPS 400/220 YES

TALAGUPPA 400/220 YES

KADAKOLA 220 YES

YERANDANAHALLY 220 YES

SHIMOGA 220 YES

BIDNAL 220/110 YES

KEMAR 220 YES

BELGAUM 220 YES

BAGALKOTE 220 YES

PEENYA 220 YES

LINGAPURA 220 YES

AMBEWADI 220 YES

B’BAGEWADI 220 YES

LINGASUGUR 220 YES

GUTTUR 220 YES

M’LPURA 220 YES

6.4 IMPORTANT INTER CONNECTIONS


a) It is connected with Eastern Region through +/- 500 kV HVDC Talcher-

Kolar link

b) It is connected to Western Region through 220 kV Chikkodi-Kolhapur D/C

and 220 kV Ambewadi - Xeldom and Ambewadi - Ponda

72 of 206.


6.4.2 WITHIN THE REGION

A. With Andhra Pradesh

a) 400 kV S/C Kadapa-Kolar

b) 400 kV S/C Gooty-Somanahally

c) 400 kV S/C Gooty-Nelamangala

d) 400 kV S/C Mehaboobnagar-Raichur

e) 400 kV D/C Gooty-Raichur

f) 220 kV S/C Gooty-Alipur

g) 220 kV S/C Tandur-Sedam

B. With Kerala

a) 220 kV S/C Kadakola-Kaniyampeta

b) 110 kV S/C Manjeswara-Kulashekara

C. With Tamil Nadu

a) 400 kV S/C Kolar- Kalavindapattu

b) 400 kV D/C Kolar-Hosur

c) 400 kV S/C Somanahalli-Salem

d) 220 kV S/C Yerandanahalli-Hosur


SUB SYSTEM – 1: The sub-system 1 comprises of Major Hydro Stations Viz.

Sharavathi, Sharavathi Tail Race (STRP), Jog, Varahi and Yelehanka (Diesel),

UPCL. It includes major and important load centre like Bangalore, Mysore, Hoody,

Peenya & Mangalore etc.

SUB SYSTEM – 2: The sub-system 2 comprises of Major Thermal Stations Viz.

Raichur & Bellary and Major Hydro Stations Viz. Nagjheri, Kadra, Kodasalli & Almatti

and Kaiga (Nuclear), Tata (Diesel) & Jindal (Corex). It includes major and important

load centre like Hubli, Belgaum & Gulbarga etc.

73 of 206.


SUB SYSTEM 2

SUB SYSTEM 1

74 of 206.


6.6 RESTORATION OF SUBSYSTEM 1- (SHARAVATHY AREA)

6.6.1 AVAILING START UP POWER


A. During Total Regional Blackout and /or Total Blackout in Karnataka

� Self-starting of Sharavathy hydro generation.

� Self-starting of Varahi hydro generation.

� Self-starting of STRP hydro generation.

� From Andhra Pradesh system through 400 kV Kadapa & Gooty lines.

� From Kerala system through 220kV S/C Kadakola - Kaniyampeta line.

� From Tamil Nadu system through 400 kV Kalavindapattu, Hosur, Salem and

from 220 kV Hosur lines.

B. During Blackout of Subsystem 1 only

� From Andhra Pradesh system through 400 kV Kadapa & Gooty lines.

� From Kerala system through 220kV S/C Kadakola - Kaniyampeta line.

� From Tamil Nadu system through 400 kV Kalavindapattu, Hosur, Salem and

from 220 kV Hosur lines.

� From Subsystem 2 through 400 kV D/C Guttur-Hiriyur to Hiriyur and from

220kV D/C Hubli-Sharavathy & 200 kV S/C Ranibennur-Sharavathy lines to

Sharavathy Generating Station.

6.6.2 RESTORATION PROCESS FOR SUB-SYSTEM 1 (IN CASE OF TOTAL

BLACKOUT OF THE REGION)

6.6.2.1 Availing Start up Power

All Major generators (Sharavathy, STRP & Varahi) in this Subsystem are

having self-starting facilities and can come up on their own.

6.6.2.2 Restoration of the Subsystem

In case of Total Blackout of the System all hydro/naptha in this system can be

self-started and this island can be gradually developed by providing loads of

Shimoga, Mysore, Mangalore and Bangalore urban..

75 of 206.


The actions at Sl No. (a) to (c) shall be done simultaneously

a) Start one unit at Sharavathi and extend supply to S’koppa & Extend

supply to Shimoga from Sharavathy with 40 MW load at Shimoga

b) Start Varahi generation and Extend supply to Kemar (20MW) & Start

Up Power to UPCL (25MW)

c) Start STRP generation and extend supply to Talguppa

d) Synchronise 220 kv Shimoga - Varahi line at Varahi.

e) Extend supply to Puttur & Kavoor. Connect loads at Puttur (20 MW) &

Kavoor (50MW) by extending power from Kemar.

f) Synchronise 220 kv Talguppa - Sharavathy line at Sharavathy.

g) Extend supply from Shimoga to Nelamangala 220kV via KB cross

(20MW) and connect about ( 40 MW) load at Nelamangala

h) Extend supply from Nelamangala to Peenya 220kV and connect some

loads (15MW) at Peenya at 66kv.

i) Extend supply to 400 kV at Nelamangala & extend to Somanahalli &

connect some loads at Sommanahalli (30 MW)

j) Extend supply to Yelehanka and synchronise Yelehanka units.

k) Extend Supply from Peenya to Sommanahalli via SPura (30MW) and

synchronise at Sommanahalli.

l) Charge Talguppa 400 kV station & close Talguppa-Hassan-

Nelamangala Line

76 of 206.


77 of 206.




TOTAL BLACKOUT IN KARNATAKA

(a) At Sharavathy

� In case of Total failure of supply in Karnataka System start the

generators from station auxiliaries or from diesel set and await for

further instruction from SLDC

� Bring at least four to five machines on bar

� Charge Sharavathy-S’Koppa line and avail loads in consultation with

SLDC and S’Koppa

� Charge one of Sharavathy-Shimoga line and avail loads in consultation

with SLDC and Shimoga.

� Charge one of Sharavathy-Sirsi-Hubli line and avail loads in

consultation with SLDC, Sirsi and Hubli.

� Charge Sharavathy-Talaguppa in consultation with Talaguppa and

SLDC

� Gradually cut in other generators and lines as the load in the

Subsystem picks up in consultation with SLDC

(b) At Varahi

� In case of Total failure of supply in Karnataka System start the


further instruction from SLDC.

� Charge One of Varahi-Kemar 220kV line and avail loads in consultation

with Kemar and SLDC

� Synchronise Varahi-Shimoga 220kV line at Varahi

78 of 206.


(c) At STRP

� In case of total failure of supply in Karnataka System start the


further instruction from SLDC.

� Extend power supply to Talaguppa substation in consultation with

SLDC and Talaguppa

(d) At Kemar

� Avail Supply from Varahi

� Avail loads in consultation with SLDC

� Extend Start up supply to UPCL.

� Extend supply to Puttur & Kavoor

(e) At Shimoga

� Avail Power supply from Sharavathy

� Avail limited load in consultation with SLDC

� Extend supply to Varahi and synchronise with Sharavathy system at

Varahi

� Extend Power supply to Neelamangala either through Kibbanahalli

(Preferred) or Antharasanahally or Kadur or Hassan/Nittur.

� Extend Power supply to other substations in consultation with SLDC

(f) At Nelamangala

� Avail Power supply from Shimoga

� Extend Power supply to Peenya which in turn extend it to Yelahanka

Generating Station for Start-up.

� Extend Power supply to Somanahalli through 400 kV system by

charging 400 kV Nelamangala-Bidadi-Somanahalli line and take

minimum load.

� Extend Power supply to Hoody through 400 kV system by charging 400

kV Nelamangala-Hoody line and take minimum load.

79 of 206.


� Extend Power supply to Kolar through 400 kV system by charging 400

kV Kolar-Somanahalli line and take minimum load.

� Gradually extend power supply to Somanahalli area in consultation with

SLDC

� Once the island is built up it can be synchonised with Subsystem 2 by

availing power supply from Guttur through Hiriyur

� This island can also be synchronized with central grid by synchronizing

with 400 kV Gooty-Nelamangala/ 400 kV Gooty-Somanahally / 400 kV

Kadapa-Kolar / 400 kV Hosur-Kolar / 400 kV Kalavindapattu-Kolar lines

(g) At Peenya

� Avail Power supply from Nelamangala

� Avail limited load in consultation with SLDC

� Extend power supply to Yelahanka Generating Station for Start up

� Extend Power supply to Somanahally through S’Pura.

(h) At Talaguppa

� Avail Power supply from STRP if unit has started at STRP

� Extend supply from STRP system for synchronization with Sharavathy

at Sharavathy

� Charge one of the 400 kV Talaguppa–Hassan-Nelamangala line.

Before charging this line ensures that the Line Reactors of the other

line are converted in to Bus reactors at both ends to prevent over

voltage during charging the line.

(i) At UPCL

� Trip all out going lines

� Avail startup power supply from Varahi through 220KV Varahi –Kemar

–UPCL in consultation with SLDC.

6.6.4 Restoration of Subsystem 1 – during collapse of this Subsystem alone

or Karanataka system alone

80 of 206.


All generating stations in this Subsystem are having self-starting facility.

Operating staff of these stations should start the generators from station

auxiliaries or from DG set and await for further instruction from SLDC

6.6.4.1 Extending Supply from 400 kV System

If the supply is available at 400 kV Kadapa / Gooty / Kalavindapattu / Salem /

Hosur, the same should be extended to this Subsystem in consultation with

SRLDC to meet partial and important loads around Somanahalli by extending

supply to Somanahally and Nelamangala from Gooty or to Somanahalli from

Salem and to Kolar either from Kadapa, Hosur or Kalavindapattu.

If the Power supply is available at Somanahalli / Hoody / Nelamangala, the

same can be extended to Shimoga by restoring restricted loads at intervening

substations. Sharavathy generating station can start their generators and

extend up to Shimoga for synchronizing Sharavathi with rest of the grid.

6.6.4.2 Extending supply from Subsystem 2

Supply to Sharavathy can be extended from Hubli or from Ranibennur and

Subsystem 2 can be synchronized with Subsystem1. Then supply to be

extended to Nelamangala via Shimoga.

81 of 206.


6.6.5 RESTORATION OF SUBSYSTEM 2- (RAICHUR, BELLARY, NAGJHERI

COMPLEX & KAIGA AREA IN KARNATAKA SYSTEM)

A. Availing Start Up Power


A. During Total Regional Blackout and /or Total Blackout in Karnataka

� Self-starting of Nagjheri hydro generation.

� Self-starting of Kadra hydro generation.

� Self-starting of Supa hydro generation.

� Self-starting of Kodasalli generation.

� From Andhra Pradesh system through 400 kV Gooty, Mehaboobnagar

and from 220 kV Gooty, Tandur lines.


� From Andhra Pradesh system through 400 kV Gooty, Mehaboobnagar

and from 220 kV Gooty, Tandur lines.

� From Subsystem 1 through 400 kV D/C Guttur-Hiriyur and from 220kV

D/C Hubli-Sharavathy lines.

6.6.6 RESTORATION PROCESS FOR SUB-SYSTEM 2 (IN CASE OF TOTAL

BLACKOUT OF THE REGION)

A. Availing Start up Power

All Major Hydro generators (Nagjheri, Kadra, Kodasalli & Supa) in this

Subsystem are having self-starting facilities and can come up on their own.

B. Restoration of the Subsystem

In case of Total Blackout of the System all hydro generators in this system can

be self-started and this island can be gradually developed by providing loads

of Hubli, Mahalingapur, B.B. Wadi, Gulbarga, Humnabad & Belgaum. The

actions at Sl No.1&2 shall be done simultaneously

82 of 206.


a) Start Nagajhari generation and extend supply to Kaiga via Kodasahalli.

Kaiga to synchronise their units in case units are in House load or else

avail startup.

b) Startup Supa and Extend to Nagjheri via Ambewadi (110kV).

c) Extend supply from Nagajhari to BTPS via Bidnal (40MW), Enercon,

Lingapur – BTPS.

d) Extend supply from Lingapur – JSW.

e) Extend supply from Lingapur to RTPS via Sindanur, Lingasugur – RTPS.

f) Start Kodasahalli and Kadra units and synchronise Kadra-Kodasahalli

and Kadra-Kaiga. Generation of kadra and kodasalli may be restricted to

avoid line loadings.

g) Extend supply to Belgaum via Narendra from Nagjheri and Synchronise

Tata Power. Tata Power has startup but cannot be utilized due to lack of

synchronizing capacity at Belgaum & Narendra.

h) Charge 400kV Narendra-Kaiga at Narendra End and Synchronise at

Kaiga end.

i) Extend supply to important loads such as Sea Bird (Karwar).

j) No Traction loads available in Subsystem2.

k) In case supply is available at Kolhapur the same can be availed radially

at Belgaum & Chikkodi. Subsequently, Subsytem 1 & 2 shall be

synchronized at Sharavathy through 220 kV Hubli-Sharavathi Lines.

l) 400kV Kaiga-Guttur,Guttur-Hiryur-Nelamangala & Raichur-Guttur

corridors would be normalized depending on system condition.

-

83 of 206.


84 of 206.




TOTAL BLACKOUT IN KARNATAKA

(a) At Nagjheri

� Open all out going lines.

� Self-start generators through station auxiliaries available or through DG

Set.

� Charge one of the Nagjheri-Hubli lines and avail limited load.

� Once one or two units of Nagjheri started supply should be extended to

Kodasahalli in consultation with Kodasalli and SLDC through 220 kV

Nagjheri-Kodasalli line which will be further extended to Kaiga for

starting up the generators

� Charge one of the Nagjheri-Ambewadi lines and avail limited load.

� Since the generators at Nagjheri cannot run at loads less than 100MW

per generator system loads should be gradually resumed. Following

procedure may be adopted to provide sufficient loads to meet the

requirement of minimum generator loading

1 One unit of Nagjheri

Synchronised

Resume 100MW of Hubli,

Ambewadi, Narendra Load

2 Second unit of Nagjheri

Synchronised

Resume 100MW of Belgaum Load

3 Third unit of Nagjheri

Synchronised

Resume 100MW Load of

Mahalingapur

(b) At Supa


� Self-start generators through Supa station auxiliaries available or

through DG Set and extend power supply to Ambewadi.

� Once Nagjheri Generator comes up it can be synchronized at Nagjheri

through 220 kV Ambewadi-Nagjheri line.

85 of 206.


(c) At Hubli


� Avail Power supply from Nagjheri

� Restore loads at Hubli considering the generation limits at Nagjheri in

consultation with Nagjheri /SLDC

� As the generation in the Subsystem picks up gradually restore the

nearby loads (Bidnal, Mahalingapur & Lingapur)

� Synchronise it with Subsystem 1 in consultation with SLDC

(d) At Lingapur


� Avail power supply from Alipur if supply is available at Gooty via

Regalapadu

� In case power supply is available at Hubli the same can be availed

� Extend the startup power to BTPS

� Extend the same to Jindal

� Extend the same to RTPS through Lingasugur in consultation with

Lingasugur /SLDC.

(e) At Raichur


� If the station is on House load start other units and wait for instruction

from SLDC

� In case AP system is intact and N’sagar machines are running. Start-up

power can be availed through 400 kV N’Sagar-Mehaboobnagar-

Raichur line. Start-up power can also be availed through 400 kV Gooty-

Raichur.

� Startup power can also be availed through 220KV Tandur-Sedam-

Raichur line.

86 of 206.


� In case assistance is not available from AP system startup power

supply should be availed from Nagjheri through 220KV Nagjheri – Hubli

– Bidnal – Enercon - Lingapur-Lingasugur - Raichur. Since this is a long

line to control the charging voltage suitable loads in the intermediate

stations should be availed.

� As the generation picks up 220KV lines are charged and power supply

is extended to the surrounding substations.

� As the island develops 400KV Guttur/Munirabad lines can be charged.

(f) At Alipur


� Avail supply from Regalapadu/ Gooty in consultation with SLDC and

Regalapadu / Gooty

� Extend power to Kuditini for start up the unit at BTPS

� Extend power supply to Lingapur for extending the same to Jindal

(g) At Sedam


� Avail supply from Tandur in consultation with SLDC and Tandur

� Extend the same to Raichur if startup power is required for Raichur

� Avail local loads in consultation with SLDC

� Extend power supply to Humnabad in consultatiuon with SLDC and

Humnabad.

(h) At Bellary TPS


� If the station is on House load start other units and wait for instruction

from SLDC

� In case AP system is intact avail startup from Gooty through 220 kV

Gooty-Alipur-Kuditini.

87 of 206.


� In case assistance is not available from AP system startup power

supply should be availed from Nagjheri through 220KV Nagjheri-Hubli-

Bidnal-Enercon-Lingapur-Kuditini. Since this is a long line to control the

charging voltage suitable loads in the intermediate stations should be

availed.

(i) At JSW


� In consultation with SLDC avail power supply from / extend power

supply to Lingapur As per the status of survival of islanding scheme at

JSW.

(j) At Kodasalli


� Self-start generators through through DG Set or Nagjheri station

auxiliaries available and synchronise it with Nagjheri through 220 kV

Nagjheri–Kodasalli line.

� Extend power supply to Kaiga incase Kaiga didn’t get startup power

from Nagjheri through 220 kV Nagjheri-Kodasalli-Kaiga lines.

� Extend power supply to Kadra

� Generation may be restricted to avoid line loading.

(k) At Kadra


� Self-start generators through Nagjheri station auxiliaries available or

through DG Set and synchronise it with Nagjheri through 220 kV

Nagjheri–Kodasalli-Kadra line.

� Generation may be restricted to avoid line loading.

(l) At Kaiga


88 of 206.


� Avail survival power, if required from Nagjheri through 220 kV Nagjheri-

Kodasalli-Kaiga line & synchronise it with Kaiga generator if they are on

house load otherwise use this power for starting up generators.

� Extend power supply to Guttur or Narendra. and gradually increase the

generation as load picks up in consultation with SLDC/SRLDC

� In case of delay in availing power supply from Nagjheri, it can be

availed from Narendra-Kaiga lines, otherwise from Subsystem 1

through Kaiga-Guttur-Ranibennur-Sharavathy lines.

(m) At Ambewadi


� Avail power supply Either from Supa or Nagjheri

� Avail local loads

� Extend the same to Narendra

� Close interstate lines Ambewadi-Ponda and Ambewadi-Xeldem in

consultation with SLDC and GOA

(n) At Tata Generating Station

� In case of total failure of supply in Karnataka System start the

generators from diesel set and await for further instruction from SLDC.

� Extend power supply to Belgaum and avail limited load.

� Power supply can also be extended to Narendra / Chikkodi from

Belgaum.

(o) At Narendra

� Open all out going lines

� Avail Power supply from Hubli and resume partial loads in consultation

with SLDC

� If Kaiga units are on bar one of 400 kV Kaiga-Narendra line may be

charged and supply from Kaiga maybe availed.

89 of 206.


� Power supply can also be availed from Ambewadi & Belgaum

(p) At Belgaum


� Avail power supply from Tata Generating Station.

� Extend Power supply from Narendra

� Extend power supply to Chikkodi

(q) At Chikkodi


� Avail Power supply from Belgaum

� In case of delay in obtaining power supply from Belgaum and supply

has to be availed from Western Region it can be availed from Kolhapur

in consultation with SLDC and Kolhapur.

� Depending on the quantum of power to be imported from Western

Region supply can be extended to Belgaum

6.6.8 Restoration of Subsystem 2 during collapse of this Subsystem alone

All major hydro generating stations & Tata (Diesel) Generating Station in this

Subsystem are having self-starting facility. Operating staff of these stations

should start the generators from station auxiliaries or from diesel set and

await for further instruction from SLDC

6.6.9 Extending Supply from 400 kV System

If supply is available at 400 kV Regulapadu/Mahaboobnagar, it should be

extended to this Subsystem in consultation with SRLDC to startup the Raichur

units and it can be further extended to meet important loads of Gulbarga &

B.B. Wadi area.

6.6.10 Extending supply from Subsystem 1

90 of 206.


Supply to this Subsystem can be availed from 220 kV Sharavathy-Hubli-

Nagjheri line and synchronized it at Nagjheri.

Supply to this Subsystem can also be availed from 400 kV Guttur-Hiriyur lines.

6.7 CRITICAL LOADS IN KARNATAKA

Sl. No

Area Installatiom Load MW

Connected 220 KV Station

Sub Syste

m

1 Bangalore

DRDO, NAL, HAL, HAL Air Port, Water Supply, ISRO

20 HAL 1

Vidhana Soudha, Rajbhavan, High Court, Central Railway Station, Water supply, Bangalore Bus Stand

25 NRS/ Hebbal 1

Agriculture University, Water supply, Jekkur air port

20 Hebbal 1

Nimhans, Water Supply 8 HSR Lay out 1

ISRO, Water supply 15 Peenya 1

Jayadeva, Water Supply 4 Subramanyap

ura 1

BIAL Devanahally, 3 Begur 1

Bangalore

Milk chilling Venter, Infosys, Electronic City, Water Supply

10 Yerandanahal

ly 1

Rail Way Traction, Water Supply, Bagmane Estate

15 Hoody 1

General Hospital, Water Supply.

15 Somanahally 1

CPRI 8 CPRI 1

ITPL 8 ITPL 1

Tataguni Water supply 15 Tataguni BWSSB

1

Harohally Water supply 15 Harohally BWSSB

1

2 Tumkur General Hospital, Water Supply, HMT, Siddaganga Mutt, Milk Diary.

8 Antharasanah

ally,

3 Davanagere General Hospital, Water Supply

3 Davanagere

4 Madhugiri General Hospital, Water Supplly,

5 Madhugiri

5 Kibbanahally General Hospital, Water Supplly,

5 Kibbanahally

91 of 206.


6 Kolar Rail Way Traction, Water Supply, HVDV Station, Milk Diary

10 Kolar 1

7 Gouribidanur BARC, Water supply 3 Gouribidanur 1

8 Shimoga

All India Rdio, General Hospital, Water Suppl. MPM, VISL, Shringeri, Varanadu.

12 Shimoga 1

9 Mangalore Air Port, General Hospital, Water Supplt , Mangalore Port, Udupi

12 Kavoor 1

10 Kemar MAHE, Dharmasthala, Kollur, Kateelu Water supply, General Hospital.

12 Kemar 1

11 Mysore

DRDO, KRS, BARC, All India Radio, Mysore Palace, Chamundeshwari Hill, Air force centre, Milk Diary, Water Supply

15 Hootagally 1

12 T K Hally Bangalor Water Supply, General Hospital.

20 T K Hally 1

13 Madhuvana hally

General Hospital, Water Supplly. Mahadeshwara Temple.

5 Madhuvanah

ally 1

14 Chamaraja nagar

General Hospital, Water Supplly.

3 Chamaraja

nagar 1

15 Nanajanagud General Hospital, Water Supplly, Nanajangud Temple, Suttur Matt.

5 Kadakola 1

16 Tubinakere General Hospital, Water Supplly.

3 Tubinakere 1

17 Hassan General Hospital, Water Supplly, ISRO.

12 Hassan 1

18 Chinthamani General Hospital, Water Supplly.

3 Chinthamani 1

19 D B Pura General Hospital, Water Supplly.

3 D B Pura 1

20 Hubli Air Port, General Hospital, Water Supplt , Southeren Railway

5 Hubli 2

21 Dharwad All India Rdio, General Hospital, Water Suppl. VTU.

3 Narendra 2

22 Belgaum Army base camp, General Hoapital, Water Supply

3 Belgaum 2

23 Bidar Air Force Centre, Water Supply, General Hospital

5 Humnabad 2

92 of 206.


24 Gulbarga All India Rdio, General Hospital, Water Suppl. T V Station.

8 Gulbarga 2

25 Raichur General Hospital, Water Supply.

4 Raichur 2

26 Bellary General Hospital, Water Suppl. TB Dam

5 Alipur 2

27 Raichur Start-up supply to RTPS, Water Supply

20 220/ 400 KV

Supply 2

28 BTPS Start up supply to RTPS, Water Supply

10 220/ 400 KV

Supply 2

29 Koppal General Hospital, Water Supply.

3 Munirabad 2

30 Mahalinga puara

General Hospital, Water Supply.

5 Mahalinga

puara 2

31 BB Wadi General Hospital, Water Supplly.

5 BB Wadi 2

32 Lingasugur General Hospital, Water Supplly.

5 Lingasugur 2

33 Chikkodi General Hospital, Water Supplly.

5 Chikkodi 2

34 Karwar Sea Bird, Water supply, General Hospital.

5 Karwar 2

35 Shahapur General Hospital, Water Supplly.

4 Shahapur 2

36 Sedam General Hospital, Water Supplly.

5 Sedam 2

37 Gadag General Hospital, Water Supplly.

6 Gadag 2

38 Hubli Air Port, General Hospital, Water Supplt , Southeren Railway

5 Hubli 2

93 of 206.


6.8 SUPPLY DETAILS FOR RAILWAY TRACTION SYSTEM IN KARNATAKA

The details of traction system in Karnataka are given below

94 of 206.

S.No. Railway section

Electric

Division/

Circle

Sub

system

No.

220 KV

feeding

point

132 KV

intervining

substation

if 132 KV

tap line

Grid

substation

Railway

Traction

Sub

Station

Transfor

mation

capacity

(MVA)

Phase

details

Sanc-

tioned

load in

MVA

Average

demand

in MVA

Priority

Emergency

minimum

requirement

MVA if all

substations are

given

Emergency

minimum

requirement

MVA if

alternative

substations

are given

Source of

supplyControled by

1 Jolarpet-Bangalore Hoody 1 Hoody 220 - Hoody 220 Whitefield 2 X 20 R-Y 8.5 8 A2 5 8.5 BESCOM

2 Jolarpet-Bangalore Kolar 1 Kolar 220 - Kolar 220 Bangarpet 2 X 20 R-Y 14 13 A1 10 14 BESCOM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Sl. No Railway section

Electric

Division

/Circle

Subsyst

em No.

220 KV

feeding

point

132 KV

intervining

substation if

/132 132 KV

tap line

Grid

substation

Railway

Traction

Sub Station

Transform

ation

capacity

(MVA)

Phase

details

Sanctio-

ned load

in MVA

Average

demand in

MVA

Priority

Emergency

minimum

requirement MVA if

all substations are

given

Emergency

minimum

requirement MVA

if alternatvie

substations are

given

DISCOM Traction power

control centre

Hoody 220

kV-- Hoody 66kV

HAL 220 kV HAL 66kV

-- SRS Peenya 66kV

Welcast 66kV

Subramanyap

ura 220 kV-- Subramanyapura 66kV

Sommanahall

i 220 kVKhoday RS 66kV

Vrushbavathi

220 kV-- Vrushbavathi 66kV

NRS 220 kV NRS 66kV

Remarks Any single source is required. At present both substations are required

* Yet To be commissioned

SOUTH WESTERN RAILWAY

BMRCL

2.00 A 1 1 BESCOM

Traction power

control / Phone:

080-25191075,

DGM/Trd

BESCOM

Traction power

control / Phone:

080-25191075,

DGM/Trd

4 Byappanhalli - Mysore Road Peenya 1 *Mysore Road 2 x 25 3 phase 4.00

3 phase 4.00 2.00 A 1 13 Jalahalli - Puttenahalli Peenya 1 *Puttenahalli 2 x 25

2.00 A 1 1 BESCOM

Traction power

control / Phone:

080-25191075,

Traction power

control / Phone:

080-25191075,

DGM/Trd

2 Jalahalli - Puttenahalli Peenya 1SRS Peenya

220 kVPeenya 2 x 25 3 phase 4.00

4.00 2.00 A 1 1 BESCOM

DETAILS OF TRACTION SUBSTATIONS IN KARNATAKA

TPC/Bangalore,

080-22871334 ,

973166350

1 Byappanhalli - Mysore Road HOODY 1 Byappanahalli 2 x 25 3 phase

95 of 206.



A. Sharavathy

a. Start-up Sharavathy extend to shimoga.

B. Varahi

a. Start-up Varahi

b. Synchronise shimoga – Varhi at Varahi

C. STRP

a. Start-up STRP & extend to Talguppa

b. Synchronise Talguppa – Sharavathy at Sharavathy.

D. Kadra

a. Start-up Kadra & extend to Kaiga

b. synchronise at Kaiga (yet to be tested)

E. Kodasahalli

a. Start-up Kodasahalli & extend to Kaiga

b. synchronise at Kaiga (yet to be tested)

6.10 BLACK START MOCK DRILL SCHEDULE FOR THE YEAR 2014

� SUB SYSTEM 1 JUNE 2014

� SUB SYSTEM 2 JUNE 2014

96 of 206.


7.0 RESTORATION OF TAMIL NADU SYSTEM

7.1 SYSTEM OVERVIEW

Tamil Nadu system comprises of ISGS, State owned major Thermal & Hydro

generating stations. The TN system can be divided in to three sub systems, which

can be brought up independently and synchronized subsequently once the system

develops in to larger sustainable islands.


Following are the Major Generating Stations in the TN System

Sl

No

STATION TYPE SECTOR CAPACITY

IN MW

BLACK

START

FACILITY

SUB

SYSTE

M

1 Tuticorin TPS Thermal State 1050 Not available 1

2 Periyar Hydro State 147 Available 1

3 Madurai Power CL Diesel State IPP 106 Available 1

4 Kodayar 1,2 Hydro State 100 Available 1

5 Vazhuthur Stage I Gas State 98 Not Available 1

6 Vazhuthur satge II Gas State 95 Not available 1

7 Papanasam Hydro State 32 Available 1

8 Servalar Hydro State 20 Available 1

9 Suruliyar Hydro State 35 Not available 1

10 Penna Gas State IPP 52.8 Not Available 1

11 Neyveli TPS II Thermal Central 1470 Not available 2

12 Mettur TPS Thermal State 840 Not available 2

13 Neyveli TPS I Thermal State 600 Not available 2

14 Neyveli TPS I

(Exp) Thermal Central 420 Not available 2

15 Kadamparai Hydro State 400 Not available 2

16 P.P.Nallur Naptha State IPP 330.5 Not available 2

97 of 206.


17 ST CMS Thermal State IPP 250 Not available 2

18 Mettur Tunnel Hydro State 200 Not Available 2

19 Mettur Dam Hydro State 50 Available 2

20 Moyar Hydro State 36 Available 2

21 Kundah PH 1 Hydro State 60 Not available 2

22 Kundah II Hydro State 175 Not Available 2

23 Kundah III Hydro State 180 Not Available 2

24 Kundah IV Hydro State 100 Available 2

25 Kundah V Hydro State 40 Not Available 2

26 Kundha VI Hydro State 30 Not Available 2

27 PUSHEP Hydro State 150 Available 2

28 Lower Mettur Hydro State 120 Not Available 2

29 Aban Power Gas State IPP 120 Not Available 2

30 Kovil Kalapal Gas State 107 Not Available 2

31 Kuttalam Gas State 101 Not Available 2

32 Sholayar 1,2 Hydro State 95 Not Available 2

33 Aliyar Hydro State 60 Available 2

34 Pykara Hydro State 59 Not Available 2

35 Samalpatti Diesel State IPP 106 Available 2

36 Sarkarpathy Hydro State 30 Available 2

37 Bavani Kattalai

Barriage Hydro State 30 Not available 2

38 North Chennai

TPS Thermal State 630 Not available 3

39 Ennore TPS Thermal State 450 Not available 3

40 MAPS Nuclear Central 440 Not available 3

41 GMR Power Diesel State IPP 196 Available 3

98 of 206.


42 Basin Bridge Naptha State 120 Available 3

43 TCPL Coal CPP 58 Not available 3

44 OPG Coal State IPP 80 Not available 3

45 Kamakshi Coal State IPP 70 Not available 3

46 NCTPS Stage 2 Coal State 600 Not Available 3

47 MTPS Stage 3 Coal State 600 Not Available 2

48 NTECL Vallur Coal CGS 1200 Not Available 3

49 Kudankulam Nuclear CGS 1000 Not Available 1

7.3 LIST OF SUB-STATIONS WITH SYNCRONISING FACILITY

Sl.No. SUB STATION VOLTAGE

LEVEL (KV)

SYNCHRONISING

FACILITY

YES/NO

1 ACHARAPAKKAM 230 YES

2 ALAGARKOIL 230 YES

3 ALUNDUR 230 YES

4 AMUTHAPURAM 230 YES

5 ANUPPANKULAM 230 YES

6 ARANI 230 YES

7 ARASUR 230 YES

8 BASIN BRIDGE 230 YES

9 CHECKANOORANI 230 YES

10 CUDDALORE 230 YES

11 DEVIAKURICHY 230 YES

12 EACHANGADU 230 YES

13 GOBI 230 YES

14 GUMMIDIPOONDI 230 YES

15 HOSUR 230 YES

99 of 206.


16 INGUR 230 YES

17 K.R. THOPPUR 230 YES

18 KADALANGUDI 230 YES

19 KADAPERI 230 YES

20 KARAIKUDI 230 YES

21 KARIAMANGALAM 230 YES

22 KAVANOOR 230/110 YES

23 KAYATHAR 230 YES

24 KILPAUK 230 YES

25 KITS PARK 230 YES

26 KODIKURUCHI 230 YES

27 KORATTUR 230 YES

28 KOYAMBEDU 230 YES

29 MAMBAKKAM (SIPCOT) 230 YES

30 MANALI 230 YES

31 METTUR 230 YES

32 MOSUR 230 YES

33 MYLAPORE 230 YES

34 NOKIA 230 YES

35 OK MANDAPAM 230 YES

36 ORAGADAM 230 YES

37 PALLADAM 230 YES

38 PASUMALAI 230 YES

39 PERAMBALUR 230 YES

40 PONNAPURAM 230 YES

41 PUDHANSANDHAI 230 YES

100 of 206.


42 PUDUKOTTAI 230 YES

43 PUGALUR 230 YES

44 RENGANATHAPURAM 230 YES

45 S.P. KOIL 230 YES

46 S.R.PUDUR 230 YES

47 SALEM 230 YES

48 SAMAYAPURAM 230 YES

49 SANGANERI 230 YES

50 SEMBATTY 230 YES

51 SINGARAPET 230 YES

52 SIRUSERI 230 YES

53 SRIPERUMBUDUR 230 YES

54 TARAMANI 230 YES

55 THANJAVUR 230 YES

56 THENI 230 YES

57 THIRUVANNAMALAI 230 YES

58 THIRUVARUR 230 YES

59 TONDIARPET 230 YES

60 TRICHY 230 YES

61 TUTICORIN AUTO 230 YES

62 TUTICORIN SIPCOT 230 YES

63 UDAYATHUR 230 YES

64 UDUMALPET 230 YES

65 UNJANAI 230 YES

66 VALUTHUR 230/110 YES

67 VEERANAM 230 YES

101 of 206.


68 VILLUPURAM 230 YES

69 VINNAMANGALAM 230 YES

70 THIRUVALAM 230 YES

71 MYVADI SWITCHING

STATION 230 YES

72 ANIKADAVU 230/33 YES

73 SADAYARPALAYAM 230/33 YES



� Tamil Nadu does not have interconnections with other regions.


A. With Andra Pradesh

a) 400 KV S/C Chittoor- Sriperumbudur

b) 400 KV D/C Nellore-Alamathy

c) 220 KV S/C Sulurpet- Gummidipoondi

d) 220 KV S/C Chittoor-Thiruvalam

B. With Kerala

a) 400 KV D/C Udumalpet-Pallakad

b) 400 KV D/C Tirunelveli –Trivandrum

c) 220 KV S/C Udumalpet-Idukki

d) 220 KV S/C Sabarigiri-Theni

e) 400 KV D/C Tirunelveli – Edamon (Charged on 220KV )

f) 110 KV S/C Kuzhithurai-Parasala

C. With Karnataka

a) 400 KV S/C Kolar- Kalivendapattu

b) 400 KV D/C Kolar-Hosur

c) 400 KV S/C Bangalore-Salem

d) 220 KV S/C Yerandanahalli-Hosur

102 of 206.



SUB SYSTEM – 1: The sub-system 1 comprises of major thermal station viz. TTPS,

Kudankulam Atomic Power Station, Hydro stations like Periyar, Suruliyar, Papanasam,

Servalar etc., Madurai Power Corporation Pvt. Ltd., (Diesel Power Generating station),

PENNA Power (Gas Power Generating Station) Valuthur GTPP and wind generation

spread over southern part of Tamilnadu. The important load centers in this sub system

include Tuticorin, Nagercoil, Tirunelveli & Madurai. This sub system has process

industries like Sterlite and Space research centre at Mahendragiri etc., INS

Kattabomman Naval Centre, The supply points for the gas stations (ONGC/GAIL) in

the Valuthur area (R.S.Madai 110 KV SS), Existing traction centres in Subsystem I are

at Vaiyampatti, R.Vellodu & Eraniel and Upcoming traction centres are at Samaynallur,

Virudhunagar, Kovilpatti, Maniyachi, Nangueri, Valliyur (Thovalai)

SUB SYSTEM – 2: The sub-system 2 comprises of ISGS station NLC (TS-I Expn, TS-

II, TS-I(Expn)) and major thermal station viz. NLC TS-I, MTPS, Hydro stations like

Kundah, Pykara, Moyar, Kadamparai, Aliyar, Sarkarpathy, Sholayar PH1&2 etc., Gas

Power Generating Stations like PP Nallur, ABAN, Kuttalam, Kovilkalappal, Diesel

generating station at Samalpatti etc., in the coastal area of Tamil Nadu and wind

generation at Udumalpet area. The important load centres in this sub system include

Coimbatore, Tiruppur, Salem, Tanjore, Trichy & Hosur. Important Loads such as

Traction at Sulur, Ingur, Sankagiri,Mettur, Salem, Bommidi, Thirupathur, Valathur,

Trichy Murugupatty -Ambigapuram and Ariyalur-Koothur in Trichy area.

SUB SYSTEM – 3: The sub-system 3 comprises of ISGS Nuclear station MAPS,

major thermal stations viz. North Chennai, Vallur, Ennore, GMR Vasavi, Basin Bridge

Gas Power Generating Stations, HITECH and TCPL etc., The Major City in this area is

Chennai Metropolitan City. The important traction points are in this sub system are

Chindadripet MRTS, Ennore Traction, Kadaperi Traction, Avadi Traction,

Acharapakkam, VIllupuram Traction, Mosur Traction, Thiruvalam Traction. The Critical

loads are RajBhavan, Secretariat complex, High Court Complex, Foreign Embassies,

International / Domestic Air Port, Water Works, Minjur Water De-salination plant.

103 of 206.


SUB-SYSTEM-3

SUB-SYSTEM-2

SUB-SYSTEM-1

104 of 206.


7.6 RESTORATION OF SUB SYSTEM 1 ( TTPS Area)



A. During Total Regional Blackout and / (or) Total Blackout of TN

system

� By availing self start facility available at Kodayar (since it is a non-

irrigation based power plant)

� By availing self start facility available at Periyar hydro generating

station

� By availing self start facility available at Papanasam and Servalar

� Self start MPCPL (106 MW) and wait for synchronizing

In case of Total blackout of TN alone then from Kerala through

� 230 KV Theni-Sabarigiri line

� 230 KV D/C Tirunelveli – Edamon

� 400KV Trivandrum – Tirunelveli D.C. line

B. During Blackout of Sub system 1 for availing start up supply to

TTPS/MPCPL/ Valathur I &II

From subsystem 2 through.

� 400 KV S.C Udumalpet (Myvadi) – Madurai (Chekkanoorani) and 230

KV Madurai –(Checkanoorani)- TTPS D/C

� 400 KV Trichy (Alundur) - Madurai (Chekkanoorani) and 230 KV

Madurai (Chekkanoorani) – TTPS D/C

� 400 KV Karur (Pugalur)-Madurai (Chekkanoorani) D/C and 230 KV

Madurai (Checkanoorani) - TTPS D/C

� 400 KV Trichy- Karaikudi- Madurai (Chekkanoorani) S/C and 230 KV

Madurai (Checkanoorani) - TTPS D/C

� 400 KV KARUR (PUGALUR) – Pugalur 230 KV SS -230 KV R N

Puram – Madurai (Chekkanoorani) - TTPS

105 of 206.


� 230 KV Udumulpet (Myvadi) – Sembatty and 110 KV Sembatty –

MPCPL.

� 230 KV Alundur (Trichy) – Alagarkovil – 230/110 KV – Auto

Transformer - 110 KV MPCPL # 1,2

� 230 KV Alandur (Trichy) – Alagarkovil – Pasumalai – 230/110 KV Auto

Transformer – 110 KV Pasumalai - MPCPL

� 230 KV Alandur (Trichy) – Alagarkoil - Valuthur – 230/110 KV Auto

Transformer and 110 KV – Valthur Phase I and II

� 230 KV Thiruvarur –N.T.Kudi- Karaikudi- Valuthur – Valuthur 230/110

KV – Valuthur Phase I & II

� 230 KV Pudukottai –Karaikudi 400KV- Karaikudi –230 KV Karaikudi –

230 KV Valuthur and Valuthur Phase I and II

From Kerala through

� 230 KV Moozhiyar - 230KV Theni -Checknaoorani - TTPS DC line

� 400 KV D.C. Trivandrum-Tirunelveli (Abhishekapatti) -230KV

Abhishekapatti – Kayathar and 230 KV Kayathar – TTPS D/C

� 220 KV DC Edamon - Tirunelveli (Abhishekapatti) - 230 KV Kayathar -

TTPS DC line

The other 230 KV lines linking Subsystem-1 and 2 are

� Sembatti-Myvadi

� Alagarkoil-Alandur

� Karaikudi-Karaikudi 400 KV – Pudukottai 230 KV

� Karaikudi-Tiruvarur

� Chekkanoorani-RNPuram-Pugalur


TN SYSTEM.

7.6.2.1 In case of total blackout of the region,

A) Self Start Facility of Generators

106 of 206.


(i) Kodayar I & II

(ii) Periyar

(iii) Papanasanam, Servallar

(iv) MPCPL

B) Major Generators Start up Supply required

(i) Valathur I & II (Gas)

(ii) Suruliyar (Hydro)

(iii) TTPS (Thermal)

(iv) Ind Bharat (Coal)

(v) Koodankulam (Nuclear)

(vi) ARKAY Rameswaram CPP (Gas)

(a) Self-start hydel machines at Kodayar 2 and extend supply to 110 KV

Kayathar line with a load of about 10 MW load in the intermediate

substations.

(b) Self start hydel machines of Periyar and Extend power supply to

Kayathar / synchronise 110KV Periyar – Kayathar line (Because

Kayathar has no synchronization facility) as per the status of Kayathar

110kV sub-station. Then, extend supply to MPCL through theni -

Sembatty 110kV lines.

(c) Kayathar 110 KV would extend supply to Kodayar/Periyar for

synchronization at the power plant end since there is no

synchronization facility at Kayathar 110 KV SS.

(d) Self-start Hydel machines at Papanasam and Servalar and

synchronise them at Papanasam with Kodayar/Periyar through

Kayathar.

(e) Start Unit at Kodayar PH 1 and increase generation to 70 MW level

(f) Charge & synchronise Suruliar through 110KV S/C lines emanating to

these hydro stations from Kayathar

107 of 206.


To extend Supply to TTPS

Option 1: From 110 KV Kayathar – 230/110 KV AUTO TRANSFOMER -

Extend to TTPS via 230 KV Kayathar –TTPS D/C

Option 2: From Kodayar PH, through 110 KV S.R.Pudur-Kodayar # , Auto

transformer at S.R.Pudur, 230 KV S.R.Pudur-Koodangulam-TTPS

Option 3:

a) From Periyar through 110 KV Periyar – Theni #3 – Theni

230/110KV Auto Tr – 230 KV Theni – Checkanoorani – 230 KV

Checkanoorani – TTPS DC

b) From Periyar through 110 KV Periyar – Theni #3 –110 KV Theni-

Pasumalai #1/2-Auto transformer at Pasumalai- 230 KV Pasumalai–

TTPS S.C.

Option 4: From 110 KV Kayathar Extend to TTPS via 230 KV Kayathar – TTN

Auto –TTPS S/C

To extend Supply MPCPL

Self start MPCL and wait for supply to be extended to MPCPL

Option 1: From 110 KV Periyar-Theni 3, – 110 KV Theni-Sembatty-MPCPL

Line

Option 2: From 110 KV Periyar – Theni #3 – 110 KV Theni – Pasumalai #2 -

MPCPL

Option 3: Extend Supply to MPCPL from TTPS via TTPS-Pasumalai 230 KV

line through Pasumalai Auto tr. and 110 KV Pasumalai-MPCPL

Option 4: Availing supply from 230 KV Kayathar –Pasumalai line charging

and extending through 110 KV Pasumalai –MPCPL

Option 5: Extend supply to MPCPL via Pasumalai –TTPS 230 KV –

Pasumalai Auto transformer – 110 KV MPCPL #

To extend supply to Vazhathur Gas Units (IPP/CPP)

Option1: From 110 KV MPCPL – Alagarkoil 1 or 2 Extend supply to

Vazhathur 230 KV via 230 KV Alagarkoil –Vazhathur by charging

108 of 206.


the Auto Tr.at Alagarkoil. Extend to all IPPs & CPPs from Valuthur

110 KV lines (Penna, Arkey VGTPP, CECL, Sai Regency, etc )

Option2: 110 KV MPCPL # 1,2 Extend supply to Karaikudi through 110 KV

Alagarkovil – Karaikudi extend to Valuthur and Penna, Arkey

VGTPP, CECL, Sai Regency, etc

(a) Extend Supply from TTPS to SIPCOT, then to Kavanoor

(Paramakudi), Extend Supply from Valuthur to Karaikudi and

synchronise at Kavanoor (Paramakudi).

(b) To Synchronize complete sub system-1

(c) Extend Supply to Koodankulam from 230 KV TTPS OR S.R.Pudur

(d) As the generation picks up, this island is built by step by step

synchronizing 230KV lines emanating from TTPS & Madurai and

gradually providing the loads of Southern Tamilnadu.

This subsystem can be synchronized with Subsystem 2 at

Chekkanoorani / Trichy(Alundur) along 400KV Udumalpet -

Madurai, 400 KV Madurai-Karur D.C. line,400KV Trichy – Madurai,

400 KV Trichy-Karaikudi-Madurai lines, via 230 KV Alagarkovil-

Alandur, 230 KV Karaikudi-Thiruvarur, 230 KV Karaikudi-Karaikudi

400 KV SS -Pudukottai-Alandur, 230 KV Sembatty-Myvadi, 230 KV

Checkanoorani -Renganathapuram-Pugalur.

This Subsystem can be synchronized with Kerala System at

Theni through 230 KV Theni-Moozhiyar or at Tirunelveli through 400

KV Tirunelveli - Trivandrum and along 220 KV Tirunelveli - Edamon

lines.

Note: Start up supply to Kudamkulam TPS can be extended from Idukki

via 220kv Idukki-Newpollam-Pollam-Sabargiri-Edaman-Tirunelvelli-400kV

Tirunelvelli.

� Startup supply have to be given only after Kerala subsystem-2 build

upto around 500 MW

� 2 Nos bus reactors to be taken in to service at 400kV Tirunelvelli

before extending supply to Kudamkulam.

109 of 206.


110 of 206.


7.6.2.2 ACTIONS TO BE TAKEN BY VARIOUS GENERATING STATIONS

OF TN IN RESTORING SUBSYSTEM 1 DURING TOTAL

REGIONAL BLACKOUT AND / OR BLACKOUT OF ENTIRE TN

SYSTEM

While extending Start up supply from Black Start generators viz. Periyar,

Kodayar, Papanasam, Servalar all the wind connected feeders in the

intermediate 110,33/11 KV Sub stations will be kept opened to avoid

mismatch in load and generation.

(a) Action at Periyar:


� Self start machines at Periyar

� Extend power supply to Theni through 110 KV Periyar -Theni feeder

and then to Chekkanoorani and TTPS (Option 2 for TTPS)

� Extend power supply to Kayathar through 110 KV Kayathar-Periyar

feeder.

(b) Action at Kodayar:


� Self Start machines at Kodayar PH1 and 2

� Extend power supply to Kayathar through 110 KV Kayathar-Kodayar

# 1,2

� Synchronize Periyar –Kayathar 110 KV and Synchronize with

Kodayar

� Extend power supply to S.R.Pudur through 110 KV Kodayar-

S.R.Pudur # and extend supply to Koodankulam and TTPS by

charging the Auto tr. at S.R.Pudur and 230 KV S.R.Pudur-

Koodankulam-TTPS

(c) Action at Papanasam:


� Self start machines at Papanasam

� Receive supply from Servalar

� Receive power supply from Kayathar through 110 KV Kayathar-

Papanasam 2/1 feeder and synchronise.

111 of 206.


(d) Action at Servalar:


� Self start machines at Servalar

� Extend power supply to Papanasam through 110 KV

Servalar-Papanasam 1/2 feeder

(e) Action at Kayathar


� Avail power supply from Kodayar/Periyar/Papanasam (Servalar)

Since there is no synchronizing facility available at 110 KV Kayathar

Substation, the above power has to be extended to Periyar / Kodayar

/ Papanasam for synchronization.

� Extend power supply to TTPS for starting the units through Auto

transformer and 230 KV Kayathar - TTPS # 2&1

(f) Action to be taken at TTPS


� Avail power supply either from Kayathar, Madurai, Chekkanoorani

or Koodankulam (thro kodayar - S R Pudur

� Start the units and extend power supply to surrounding loads around

TTPS.

(g) Action to be taken at Chekkanoorani 230 KV, Pasumalai SS.


� Avail supply from Periyar via Theni 230 KV through 230 KV Theni –

Checkanoorani.

� Extend supply to TTPS if not already done (Option 2 for TTPS)

� Extend supply to Pasumalai through 230 KV Checkanoorani –

Pasumalai # 1 & 2 – Through 230/110 KV Auto Tr extend supply to

MPCPL through 110 KV PSQ-MPCPL #

� Extend supply to Alagarkoil through 230 KV CKNI-PSQ #1/2, 230 KV

PSQ-ALKL and then through 230 KV ALKL-VLDR # to Valuthur

� Wait for TTPS Island to build up and synchronise with TTPS on

instructions from LD

(h) Action to be taken at Alagarkoil

112 of 206.



� Avail power supply from MPCPL/Pasumalai or Alandur and extend

to Valuthur on 230 KV

(i) Action to be taken at Vazhathur 230 KVSS


� Avail power supply from Alagarkoil

� Extend supply to VGTPP through 110 KV Link Line Start up

the units.

� Extend power to Pioneer Power Limited and ARKEYEnergy on 110

KV Valthur –Paramakudi lines

(j) Action to be taken at S.R. PUDUR 230 KV SS


� Avail power supply from Kodayar 110 KV and extend supply to TTPS

via 230 KV S.R.Pudur –Koodankulam – TTPS line (with LD

permission)

� Avail supply from Koodankulam

(k) Action to be taken at Koodankulam 230 KVSS

� Open all outgoing lines

� If Koodankulam is survived on House load the same can be

synchronized with availing supply from S.R.Pudur or TTPS

� Otherwise wait for startup power from either from TTPS(one unit put

on the bar) or from S.R.Pudur( with LD permission).

� Startup supply to Kudamkulam TPS can be extended from Idukki via

220kv Idukki-Newpollam-Pollam-Sabargiri-Edaman-Tirunelvelli-

400kV Tirunelvelli.

� Startup supply have to be given only after Kerala subsystem-2 build

upto around 500 MW

� 2 Nos bus reactors to be taken in to service at 400kV Tirunelvelli

before extending supply to Koodankulam.

7.6.2.3 Restoration of Subsystem 1 during collapse of this Subsystem

alone

113 of 206.


(a) Extend power supply to Chekkanoorani from Theni after availing Self

start from Periyar PH through 110 KV Theni – Periyar #3 - Auto

transformer at Theni - and 230 KV Theni-Chekkanoorani.

(b) Extend power supply to TTPS through 230 KV Chekkanoorani-TTPS #

1,2

(c) Extend power supply to MPCPL from Theni through 110 KV Theni-

Sembatty # 1,2 and 110 KV Sembatty-MPCPL

(d) This subsystem can be synchronized with Subsystem 2 at 400 KV

Trichy – Madurai, 400KV Udumalpet - Madurai, 400KV Karaikudi –

Madurai, 400 KV Karur – Madurai, 230 KV Alagarkovil - Alandur , 230

KV Pudukottai - Karaikudi PGCIL - Karaikudi , 230 KV Karaikudi -

Thiruvarur, 230 KV Pugalur- Renganathapuran – Checkanoorani, 230

KV Sembatty – Myvadi,

(e) This Subsystem can be synchronized with Kerala System through 400

KV Tirunelveli – Trivandrum or through 220 KV Sabarigiri - Theni line

or 230 KV Edamon – Abshekapatti – Kayathar.

7.6.2.4 Important loads in sub system 1

The following are traction loads in this sub system 1:

SL NO

NAME OF TRACTION

NAME OF SUBSTATION

FEEDING NAME OF FEEDER

1 Vaiyampatty SEMBATTY 110 110KV Sembatty – Allandur #

2 R’vellodu SEMBATTY 110 110KV Sembatty – Natham #

3 Vridhunagar PASUMALAI 230 110KV Pasumalai –

Anapankulam

4 Eraniel S.R.PUDUR 230 Eraniel – S.R.Pudur 230 KV SS –

110 KV S.R.Pudur-Kodayar # 1

Other Important loads and restoration paths

1. INS Kattabomman Naval communication facility : 110 KV Supply from

S.R.Pudur SS

114 of 206.


2. ISRO Mahendragiri : 110 KV Supply from S.R.Pudur SS

3. 110 KV Water pumping station of TTPS at Manjaneerkayal: Supply

from Tuticorin Auto SS.

4. NPCIL, Koodankulam through 230 KV S.R.Pudur-Koodangulam or

110 KV Tuticorin Auto SS – Arumuganeri-S.R.Pudur feeder.

5. The supply points for the gas stations (ONGC/GAIL) in the Valuthur

area (R.S.Madai 110 KV SS from 110 KV Kavanoor-Vazhuthur #.

115 of 206.


7.6.2.5 Length of 230 KV and 110 KV lines involved in Black start

operation:

Sl. NO.

IF , THE CRITICAL FEEDER THROUGH WHICH SUPPLY COULD

BE EXTENDED

TYPE OF CONDUCTOR

DISTANCE OF THE FEEDER

IN KM

1 230 KV KAYATHAR-TTPS # 1 KUNDAH 52.570

2 230 KV KAYATHAR-TTPS # 2 KUNDAH 51.230

3 230 KV PASUMALAI-TTPS # KUNDAH 137.620

4 230 KV CHECKANOORANI-TTPS #

1,2

KUNDAH 148.28 EACH

5 230 KV ALAGARKOVIL-VALUTHUR

#

ZEBRA 160.346

6 230 KV KARAIKUDI-VALUTHUR # ZEBRA 108.200

7 230 KV CHECKANOORANI-THENI KUNDAH 61.700

8 230 KV CHECKANOORANI-

KAYATHAR # 1,2

ZEBRA 122.000


RENGANATHAPUAM

KUNDAH 103.213


PASUMALAI # 1

KUNDAH 13.660


PASUMALAI # 2

KUNDAH 16.000

12

230 KV CHECKANOORANI-

AMUTHAPURAM # 1,2

ZEBRA 112.000

13 230 KV PUGALUR-

RENGANATHAPURAM

KUNDAH &

ZEBRA

62.520

14 230 KV ALAKARKOVIL-ALUNDUR # KUNDAH 110.300

15 230 KV KAYATHAR-

ABHISHEKAPATTI #

ZEBRA 23.259

16 230 KV ABHISHEKAPATTI-

VEERANAM

ZEBRA 31.000

17 230 KV ABHISHEKAPATTI-

SANGANERI

ZEBRA 105.030

18 230 KV KARAIKUDI-KARAIKUDI 400 ZEBRA 5.944

116 of 206.


KV SS

19 230 KV PUDUKOTTAI-KARAIKUDI

400 KV SS

ZEBRA 49.206

20 230 KV SANKANERI-S.R.PUDUR ZEBRA 28.584

21 230 KV SANKANERI-KAYATHAR ZEBRA 87.430

22 230 KV KAYATHAR-UDAYATHUR ZEBRA 82.420

23 230 KV KAYATHAR-TUTICORIN

AUTO SS

KUNDAH 45.970

24 230 KV KAVANOOR-SIPCOT KUNDAH 82.380

25 230 KV SIPCOT-TTPS KUNDAH 12.200

26 230 KV KAYATHAR-

ANUPPANKULAM

KUNDAH 69.225

27 230 KV PASUMALAI-

ANUPPANKULAM

KUNDAH 69.555

28 230 KV ANUPPANKULAM-

STERLITE

KUNDAH 95.376

29 230 KV STERLITE-TTPS # KUNDAH 15.765

30 230 KV KAYATHAR-VEERANAM KUNDAH 89.200

31 230 KV VEERANAM-KODIKURICHI KUNDAH 24.498

32 230 KV KODIKURICHI-

AMUTHAPURAM #

ZEBRA 30.000

33 230 KV PASUMALAI-ALAGARKOVIL

#

KUNDAH 41.372

34 230 KV THENI-SEMBATTY # ZEBRA 62.600

35 230 KV THENI-MOOZHIYAR # KUNDAH 106.580

36 230 KV KARAIKUDI- N.T.KUDI KUNDAH &

ZEBRA

94.97

230 N.T.KUDI-THIRUVARUR 3 KUNDAH &

ZEBRA

68.09

37 230 KV KARAIKUDI-KAVANOOR # KUNDAH 75.488

230 KV KAVANOOR-VALUTHUR ZEBRA 51.79

38 110 KV PERIYAR-KAYATHAR WOLF 120.650

39 110 KV PERIYAR-THENI #3 PANTHER 55.000

117 of 206.


40 110 KV KODAYAR I- II LINK # WOLF 3.200

41 110 KV KAYATHAR-KODAYAR # 1 WOLF 88.300

42 110 KV KAYATHAR- MELAKALLUR –

KODAYAR

WOLF AND

PANTHER

114.500

43 110 KV PERIYAR-SURILIYAR WOLF 12.540

44 110 KV SURILIYAR-KAYATHAR WOLF 115.565

45 110 KV KAYATHAR-

O.THULUKAPATTI-PAPANASAM

PANTHER 57.000

46 110 KV KAYATHAR-PAPANASAM PANTHER 57.000

47 110 KV PAPANASAM-SERVALAR #

1,2

RACOON 7.00 EACH

48 110 KV THENI-SEMBATTI # 1:

22 KV VAIGAI DAM-VAIGAI PH 1,2

WOLF 28.970

49 110 KV VALUTHUR - VALUTHUR

PH 1

PANTHER 0.750

50 110 KV VALUTHUR - VALUTHUR

PH 2

PANTHER 0.750

51 110 KV KAVANOOR-RSMADAI-

VALUTHUR #

PANTHER 51.200

52 110 KV KAVANOOR-PENNA PANTHER 51.385

53 110 KV PASUMALAI-MPCPL DOUBLE

MINK

11.400

54 110 KV SEMBATTI-MPCPL DOUBLE MINK AND PANTHER

45.370

55 110 KV KODAYAR-S.R.PUDUR #1 PANTHER 101.559

56 110 KV THENI-PASUMALAI # 1 LYNX 40.230

57 110 KV THENI-PASUMALAI # 2 LYNX 40.230

58 110 KV MPCPL-ALAKARKOVIL # 1 PANTHER 22.040

59 110 KV MPCPL-ALAKARKOVIL # 2 PANTHER 26.780

60 110 KV THENI-SEMBATTY # 2 WOLF 28.970

61 110 KV KARAIKUDI-KAVANOOR LEOPARD 95.856

7.7 RESTORATION OF SUB SYSTEM 2 ( MTPS & NLC Area)

118 of 206.




A. During Total Regional Blackout and / or Total Blackout of TN system

i) Generators with Black start facility

1. Mettur Dam

2. Kundah PH-IV

3. Aliyar

4. Kundah VI (reference voltage required)

5. Sarkarpathy

6. PUSHEP

7. Moyar

8. Samalpatty(SPCL) (reference voltage required)

ii) Generators Start up supply required

(i) Mettur Tunnel

(ii) Kundah PH 1,2,3,5

(iii) Kadampari

(iv) Pykara

(v) MTPS

(vi) NLC complex(NLC TS-I,TS-II,TS-I EXP,TSII EXP)

(vii) Kuttalam and Koilkalappal

(viii) IPPs like PPN, Aban

� RLDC in coordination with CPCC will extend 400 KV supply to 400 KV

Neyveli complex (NLC TS II, NLC TS I Expn, NLC TS II Expn)

� Mettur Dam to self start extend to Mettur Tunnel and exclusively

startup MTPS and Neyveli TS-II and extend to SPCL (105MW)

� Kundah complex machines to self start and to startup MTPS as option

2

� Aliyar and Sarkarpathy to self start and extend to Kadamparai &

eventually synchronise with Kundah complex.

� From Karnataka through 400 KV Bangalore-Salem & 400 KV Kolar-

Hosur and 230 KV Yerandanahalli-Hosur

119 of 206.


� From Andhra Pradesh through 400 KV Chittoor-Sriperumbudur-

Neyveli TPS – 2

� From Kerala through 400 KV Pallakad – Myvadi and 230 KV Idukki-

Udumalpet line

B. During Blackout of Sub system 2 alone From Sub system-1

� 400 KV Madurai-Trichy-Neyveli TPS – 2

� 400 KV Trcihy-Karaikudi S/C

� 400 KV Trichy-Madurai S/C

� 400 KV Udumalpet – Madurai S/C

� 400 KV Madurai – Karur DC

� 230 KV Alandur – Alagarkoil

� 230 KV Tiruvarur – N.T.Kudi-Karaikudi

� 230 KV Myvadi – Sembatti

� 230 KV Pugalur – Renganathapuram - Checkanoorani

From Sub system-3

� 400 KV Sriperumbudur-SV’Chatram-Pondy-Neyveli TPS – 2

� 230 KV Arni-Singarpet-MTPS

� 230 KV Thiruvallam-Singarpet

� 230 KV Acharapakam- Villupuram

From With Karnataka

� 400 KV Somanhalli (Bangalore) – Salem S/C

� 400 KV Kolar – Hosur D/C

� 230 KV Yerandanahalli – Hosur S/C

From Kerala

� 400 KV Udumalpet 400 – Pallakad D/C

� 230 KV Udumalpet 230 – Idukki S/C

120 of 206.


121 of 206.



TN SYSTEM


(* Mettur Dam Power House will be available for Self Start during

irrigation demand period if permitted also for black start operation ) .

1. Startup supply for MTPS from PUSHEP

� Self start PUSHEP and extend startup power to MTPS through

Option: 1. 230KV PUSHEP – Arasur – Ingur - MTPS

Option: 2. 230KV PUSHEP – Arasur – Gobi – MTPS

2. Startup supply for MTPS from Kundah PH

� Self start Kundah-4 and extend startup power to MTPS through

Option 1: 230KV Kundah4 - Kundah3 - Kundah2 – Arasur – Ingur -

MTPS

Option 2: 230KV Kundah4 - Kundah3 – PUSHEP – Arasur – Ingur –

MTPS.

Note : Arasur & Ingur loads shall be restricted to 30MW loads each.

3. Startup supply for MTPS from Mettur Dam

� Self start Mettur Dam (50 MW) and Extend supply to Mettur Auto

through 110 KV.

� Extend Supply from Mettur Auto to Mettur Tunnel Power House.

� Mettur Tunnel units to avail supply and start.

� Mettur Tunnel extends supply to MTPS

� MTPS avails startup supply and then ensure that some load (10 MW)

is taken up at Mettur Auto before extend supply to Singarapettai

through 230 KV line.

4. Startup supply for NLC ST II

122 of 206.


� Extend supply to Samalpatti through 110 KV from 230 KV MTPS –

Singarpet and 110 KV Singarpet –Samalpatti. Self start Samalpatty

(106 MW) and synchronize

� Extend startup power to Neyveli TS2 & Neyveli TS2 Exp through

110 KV Samalpatty – Singarapet and 230 KV Singarapet –

Tiruvannamalai - Neyveli TSI - TSII . Neyveli-TS2 & Neyveli -TS2

Exp machines to avail start up supply. At this stage both NLC TS-I

and TS-I Expansion shall not avail the startup supply

� Neyveli TS2 & Neyveli -TS2 Exp startup requirement would be

restricted to 105 MW in the first stage and additional 30 MW

subsequent to increase in generation from samalpatty.

� Extend supply to pondy (30MW) via Neyvelli-Villinur/ Bahoor

subsequent to increase in generation from samalpatty.

� Self-start Moyar and extend supply to Pykara and synchronize at

Pykara, extend to Kundah PH-VI to startup via Sandynalla with 10

MW load.

� Extend supply to Kundah-V, Kundah–I from Kundah PH-VI and

synchronize complete Kundah system at Kundah-II and extend

supply to Thudiyalur.

� Self start Sakarapathy and Aliyar and synchronise with Kundah

system at Udumalpet 230KV via Udumalpet400 - O.K.Mandapam-

Thudiayalur.

� Extend supply to Kadamparai Machines via 230 KV Udumalpet-

Kadamparai.

� After Kundah system is stabilized, charge & synchronise 230KV

Ingur – Salem400 – Deviakurichi – STCMS – Neyveli TSII – TSI

lines. Now TS-1 and STCMS would avail startup power. This will also

be an alternate path for startup power to NLY-TS2 in case of any

difficulties in starting up of Samalpatty and extend startup supply to

NLC TS-I Expansion from TS-II

123 of 206.


� Extend startup to units in Kadalangudi, Thanjavur basin (ABAN, PP

Nallur, Kuttalam, Kovilkallapal) through 230KV lines viz.

Udumalpet400 –Pugulur400-Alandur – Thanjavur Tiruvarur – PP

nallur – Kadalangudi- Neyveli.

� Startup PP Nallur, ABAN, Kuttalam & Kovilkallapal

� As the generation picks up, this island is built up step by step

synchronizing 230KV lines emanating from MTPS & NLC and

gradually connecting the loads at Salem, Gobi, Arasur, Hosur,

Cuddalore, Villupuram etc.

This subsystem can be synchronized with Subsystem 1

� 400 KV Pugalur- Maduarai D/C

� 400KV Trichy – Karaikudi S/C

� 400 KV Trichy- Madurai S/C

� 400 KV Udumalpet- Madurai S/C

� 230 KV Pugalur – Renganathapuram – Checkanoorani

� 230 KV Alandur – Alagarkoil S/C

� 230 KV Tiruvarur – N.T.Kudi - Karaikudi S/C

� 230 KV Myvadi – Sembatti S/C

� 230 KV Pudukottai – 230 KV Karaikudi PGCIL – 230 KV Karaikudi

This subsystem can be synchronized with Subsystem 3

� 400 KV Sriperumbudur-SV’Chatram-Pondy-Neyveli TPS 2

� 230 KV Arni-Singarpet-MTPS

� 230 KV Thiruvallam-Singarpet

� 230 KV Acharapakam- Villupuram- Tiruvannamalai

124 of 206.


This subsystem can be synchronized with Karnataka

� 400 KV Somanhalli (Bangalore) – Salem S/C

� 400 KV Kolar – Hosur D/C

� 230 KV Yerandanahalli – Hosur S/C

This subsystem can be synchronized with Kerala

� 400 KV Udumalpet 400 – Pallakad D/C

� 230 KV Udumalpet 230 – Idukki S/C




SYSTEM

a) At Samalpatti

� Open out all out going lines

� Self start the generators

� Wait for power to be extended from Singarapet as the Samalpatti

generators cannot charge a dead bus.

b) At Mettur Dam



� Extend power to Mettur Auto via 110 KV

c) At Mettur Auto


� Receive power from Mettur Dam via 110 KV

� Extend power to MTPS via 230 KV

� Extend power to Mettur Tunnel via 230 KV

� Extend to local loads for voltage control

125 of 206.


d) At Mettur Tunnel


� Receive power from Mettur Auto via 230 KV

� Start up the machines

� Extend power to MTPS

e) At MTPS


� Receive power from Mettur Tunnel/Mettur Auto

� Extend power for start up of MTPS units

� Ensure that Mettur Tunnel machines are on bar

� Ensure that load(10 MW) is taken up at Mettur Auto

� Extend power to Singarapettai via 230 KV line.

f) At Singarapet


� Receive power supply from MTPS and extend to Samalpatti

� After Samalpatti units are synchronized, extend power supply to

Neyveli-TS1 via TV Malai -

� In case SLDC requests extend supply to Arani on 230 KV for startup

of MAPS.

� In case SLDC requests extend supply to TVMalai-Villupuram-

Acharpakkam on 230 KV for startup of MAPS

g) At T.V. Malai


� Receive power supply from Singarapet

� Extend to Neyveli TS1.

� Extend to MAPS via Villupuram-Acharpakkam.

h) At Neyveli-TS1

126 of 206.



� Receive power supply from TV Malai

� Extend to TS2 for start up of units

� Avail start up supply after confirming that TS2 units put on bars.

i) At Kundah PH 4



� Extend power supply to Thudiyalur

� Extend power supply to Kundah PH 3

� PH3 to startup and synchronise with PUSHEP

j) At PUSHEP



� Extend/Avail power supply to/from Kundah PH 3 and synchronise.

� Extend power supply to Arasur

k) At Moyar


� Self start generators

� Extend power supply to Pykara and synchronise the generators with

this subsystem

l) At Thudiyalur


� Avail power supply from Kundah PH 4

� Extend power supply to PH2 and further to Sandynallah and Pykara

to enable starting Pykara Hydro Station and synchronise the

generators.

127 of 206.


� Extend power supply to Udumalpet400(Myvadi) via oK Mandapam

(Malumichampatti) after ensuring that Pykara generators are

synchronized

� Extend power supply to Arasur via 110 KV

m) At Sandinallah


� Avail power supply either from Pykara or Thudiyalur

� Extend power supply to Kundah PH6 and Pykara enable starting

Kundah PH6 & Pykara Hydro Station and to further synchronise the

generators

n) At Kundah PH6



� Wait for power to be extended from Sandynallah as the generators

cannot charge a dead bus

� Extend power supply to Kundah complex to provide startup power to

Kundah 5, 1, 2 & 3. These generators will start their units and

synchronise the same with the Subsystem.

o) At Pykara


� Avail power supply from Sandynallah / Moyar / Thudiyalur

� Start the generators

� Extend power supply to Moyar / Thudiyalur / Sandynallah

128 of 206.


p) At Kundah PH 3


� Avail power supply from KundahPH4 / PUSHEP


� Extend power supply to Kundah PH 2

q) At Kundah PH 2


� Avail power supply from Kundah PH 1 or PH3 or

� Thudiyalur


� Extend power supply to Arasur after synchronizing the Generators

r) At Kundah PH 1


� Avail power supply from Kundah PH 5 or PH2


� Extend power supply to Kundah PH 5 or PH2 after synchronizing

the generators

s) At Udumalpet 400


� Avail power supply from Thudiyalur via OK Mandapam

(Malumichampatti)

� Extend power supply to Kadamparai to enable starting Kadamparai

to synchronise the generator Extend power supply to Udumalpet

230.

t) At Udumalpet 230


� Avail power supply from Udumalpet400 or

129 of 206.


� Avail power supply from Thudiyalur via OK

Mandapam (Malumichampatti)

� Extend power supply to Kadamparai via Aliyar to enable starting

Kadamparai to synchronise the generator

� Extend power supply to Aliyar via 110 KV line and Synchronise

u) At Aliyar



� Extend power supply to Sarkarapathy and synchronise

� Extend power supply to Kadamparai via Udumalpet110 –

udumalpet230 - Kadamparai

� Extend power supply to SholayarPH1 & 2.

v) At Sarkarpathy PH



� Extend power supply to Aliyar and synchronise

w) At Sholayar PH1


� Avail power supply from Aliyar

� Start the generators Extend power supply to Sholayar PH2 after

synchronizing the generators

x) At Sholayar PH 2


� Avail power supply from Sholayar PH1

� Start the generators and synchonise the generator.

130 of 206.


With the above actions all hydel generating stations of this Subsystem will be

on bars and now start up power from this hydro complex can be extended to

thermal stations.

y) At Arasur

� Avail power supply from Kundah PH 2/PUSHEP

� Extend limited loads(30MW) in consultation with SLDC

� Extend power supply to Ingur/Gobi

z) At Ingur/Gobi

� Avail power supply from Arasur

� Extend power supply to MTPS/Salem400

� Extend limited loads(30MW) in consultation with SLDC

aa) At Salem (PGCIL)

� Avail power supply from Ingur/Gobi

� Extend limited loads in consultation with SLDC

� Extend power supply to ST-CMS through Deviakurichi

bb) At ST-CMS

� Avail power supply from Salem400 through Deviakurichi

� Extend power supply to Neyveli TPS 2

� Avail start supply after confirming that Neyveli TPS 2 units put on

bars

cc) At Neyveli TPS – 2

� Avail power supply from NLY TS1/ST-CMS

� Start the generators.

� Extend power supply to Neyveli TPS – 1 if not already energized

� Charge 230/400 KV ICT and energise 400 KV BUS

� Extend power supply to Neyveli TPS – 1 (Exp)

� Extend power supply to Pondy through Vilianur/Bahoor.

131 of 206.


� Extend power supply to Maps via Villupuram-Acharapakam - MAPS

dd) At Neyveli TPS – 2 Exp

� Avail power supply from NLY TS1/ST-CMS

� Start the generators.

� Energise 400 KV BUS

7.7.2.3 Important loads in sub system 2

The following are traction loads in this sub system 2:

SL NO

NAME OF TRACTION

NAME OF SUBSTATION

FEEDING NAME OF FEEDER

1 Valathoor VINNAMANGALAM 230 110KV Vinnamangalam -

Vadakathipatti #

2 Thirupathur SINGARAPETTAI 230 110KV Singarapet –

Thirupathur #

3 Samalpatti SINGARAPETTAI 110 110KV Singarapet110 –

Samalpatti Traction # 1 & 2

4 Bommidi

SINGARAPETTAI 230

SINGARAPETTAI 110

KARIMANGALAM 230

110KV Mettur Auto –

Singarapet110 # 1 & 2

5 Mettur Dam METTUR AUTO 230 110KV Mettur Auto –

Mettur Dam PH # 1

6 Salem SALEM 230

SALEM 400

110KV Salem230 - Salem 400 #

1 & 2

7 Sankagiri SANKAGIRI 110 110KV Sankagiri110 - Traction

# 1 & 2

8 Ingur INGUR 230 110KV Ingur 230 - Traction #

9 Sulur Road ARASUR 230 110KV Arasur230 - Singanallur

#

The supply points for the gas stations (ONGC/GAIL) in the Kuttalam GTPP,

ABAN area (Kuttalam 110 KV SS), Kovilkalappal GTPP area

(Thiruthuraipoondi area), Other important loads can be taken up in

consultation with LD. Other loads can be released only after some units are

132 of 206.


started at MTPS and Kadamparai or in case of a robust interconnection with

other Subsystems or States.

7.7.2.4 CHANGE / MODIFICATION IN BLACK START AVAILABLE

GENERATING STATIONS

SL

NO

POWE

R

STATI

ON

INSTALL

ED

CAPACIT

Y

UNIT

TYPE

STARTUP

FACILITY SYN.

FACILIT

Y REMARKS

SOURC

E

CAPACIT

Y

1 KUNDA

H PH 61 x 30

HYDR

O Diesel 100KVA YES

Reference Load in

the Bus required for

Syn. During

blackstart

Sandynallah load

also to be included

2

SAMAL

PATTY

IPP

7 x 15 Diesel Diesel 500 KVA YES

Reference Voltage in

the Bus required for

Syn. Hence initial

Black Start is not

feasible

7.7.2.5 LENGTH OF 230KV / 110KV LINES INVOLVED IN BLACK START

OPERATION

SL

NO NAME OF THE FEEDERS

TYPE OF

CONDUCT

OR

DISTAN

CE IN

Kms

CURRENT

CARRYING

CAPACITY

AT 30°

230KV LINES

1 KUNDAH PH4 - THUDIYALUR # KUNDHA 27 696

2 KUNDAH PH4 - KUNDAH PH3 # KUNDAH 5.6 696

3 KUNDAH PH3 - KUNDAH PH2 # KUNDAH 11.3 696

SL


TYPE OF

CONDUCT

OR

DISTAN

CE IN

Kms

CURRENT

CARRYING

CAPACITY

AT 30°

4 KUNDAH PH3 - PUSHEP # KUNDHA 85 696

133 of 206.


5 KUNDAH PH2 - ARASUR # KUNDAH 61.35 696

6 ARASUR - PUSHEP # KUNDHA 84 696

7 ARASUR - INGUR # KUNDHA 33.182 696

8 INGUR – MTPS # KUNDHA 67.32 696

9 INGUR - SALEM 400KVSS # ZEBRA 79.715 810

10 MTPS - SINGARAPET # KUNDHA 102 696

11 SINGARAPET - TIRUVANNAMALAI # KUNDHA 120 696

12 TIRUVANNAMALAI - NEYVELI TS1 #

ZEBRA +

KUNDHA 94.45 745

13 SALEM 400KVSS - D'KURICHI # KUNDHA 103 696

14 D'KURICHI - STCMS # KUNDHA 94.626 696

15 ARASUR -GOBI # KUNDHA 80.02 696

16 GOBI – MTPS # KUNDHA 72.232 696

17 GOBI - SALEM 400KV SS # KUNDHA 96.11 696

18 THUDIYALUR - O K MANDAPAM # KUNDHA 28.3 696

19

O K MANDAPAM – UDUMALPET400

# 1, 2 KUNDHA 55.6 696

20

UDUMALPET230 - UDUMALPET400

# 1,2 KUNDHA 8.1 696

21

UDUMALPET230 - KADAMPARAI PH

# KUNDHA 47.06 696

22

UDUMALPET400 - PUGALURPGCIL

# KUNDHA 104.425 696

UPT400 - PUGALUR LINE IS CONVERTED AS UPT400 - PUGALUR PGCIL - PUGALUR230 ON COMMISIONING OF NEW PUGALUR 400KV SS 110KV LINES

1 KPH 6 - KPH 5 # PANTHER 11.24 427

2 KPH 6 - S'NALLAH # PANTHER 16 427

3 KPH 5 - KPH 1 # LEOPARD 8.05 286

4 KPH 1 - KPH 2 # 1, 2 OWL 5.7 400

SL


TYPE OF

CONDUCT

OR

DISTAN

CE IN

Kms

CURRENT

CARRYING

CAPACITY

AT 30°

134 of 206.


5 TDLR - KPH2 # 1, 2 OWL 40.2 400

6 TDLR - S'NALLAH # LEOPARD 62 286

7 TDLR - METTUPALAYAM # LEOPARD 22 286

8 KPH 5 - S'NALLAH # PANTHER 31.064 427

9 S'NALLAH - PYKARA PH # LEOPARD 16.96 286

10 PYKARA PH - MOYAR PH # LEOPARD 13.85 286

11 PYKARA PH - METTUPALAYAM # LEOPARD 71 286

12 SINGARAPET230 - SPCL # PANTHER 23.3 427

13 SARKARPATHY - ALIYAR PH # LEOPARD 17.84 286

14 ALIYAR PH - SHOLAYAR PH1 # 1,2 WOLF 25.8 343

15 ALIYAR PH - NEGAMAM # PANTHER 38.2 427

16 ALIYAR PH - UDUMALPET110 # 1, 2 WOLF 36.1 343

17 NEGAMAM - O K MANDAPAM # PANTHER 12.194 427

18

UDUMALPET110 - UDUMALPET230

# 1,2, 3 PANTHER 4.15 427

19 110 KV THIRUVARUR-

KOVILKALAPPAL EXPRESS #

PANTHER 35.0

427

20 110 KV THIRUVARUR-KUTTALAM

GTPP

PANTHER 53.820

427

21 110 KV KADALANGUDI-KUTTALAM

EXPRESS #

PANTHER 8.4

427

22 230 KV KADALANGUDI-PPNLR # 1,2 ZEBRA 33

EACH 810

23 230 KV THIRUVARUR-PPNLR # ZEBRA 44.6 810


KADALANGUDI

KUNDAH 49.5

696

25 230 KV THANJAVUR-PPNALR# ZEBRA 105.3 810

26 110 KV ABAN-KADALANGUDI

EXPRESS #

PANTHER 10.630

427

27 230 KV THIRUVARUR-KARAIKUDI KUNDAH 146.0 696

SL


TYPE OF

CONDUCT

OR

DISTAN

CE IN

Kms

CURRENT

CARRYING

CAPACITY

AT 30°

135 of 206.


28 230 KV THIRUVARUR-THANJAVUR ZEBRA 71.2 810

29 230 KV ALUNDUR-THANJAVUR #

1,2

ZEBRA 54.5

810


KADALANGUDI

KUNDAH 49.5

696

31 230 KV KADALANGUDI-NEYVELI KUNDAH 90.0 696

32 230 KV PUGALUR-

KARUR(PARAMATHI) 400 KV # 1

KUNDAH &

ZEBRA

19.130

745

33 230 KV PUGALUR-

KARUR(PARAMATHI) 400 KV # 2

KUNDAH &

ZEBRA

28.3

745

34 230 KV PUGALUR-PUDANCHANDAI KUNDAH 56.817 696

7.8 MOCK DRILL PROCEDURE

Sub-system – 2

a) Kundha – PH4

� Hand trip 230KV feeders at KPH4 and remote ends

� Self Start KPH4

� Extend supply to Thudiyalur and synhronise at Thudiyalur

� Extend supply to KPH3 and synhronise at KPH3

b) PUSHEP

� Hand trip 230KV feeders at PUSHEP and remote ends

� Self Start PUSHEP

� Extend supply to Arasur and synchronise at Arasur


c) Moyar

� Hand trip all 110KV feeders at Moyar

� Self Start at Moyar

� Extend supply to Pykara and Synchronise at Pykara

d) Sarkarpathy

� Hand trip Sarkarpathy – Aliyar Feeder

� Self Start Sarkarpathy

� Synchronise Sarkarpaty – Aliyar feeder at Sarkarpathy

e) Aliyar

136 of 206.


� Hand trip Aliyar unit

� Self Start at Aliyar

� Synchronise Aliyar unit at 110KV Aliyar Bus

f) Mettur Dam

� Hand trip all the 110KV feeders at Mettur DAM

� Self Start MDPH

� Extend supply to Mettur Town and synhronise at Mettur Auto.

7.9 RESTORATION OF SUB SYSTEM 3 ( Chennai Area)



A. During Total Regional Blackout and / or Total Blackout of TN system

Generators having Self Start Facility

� GMR Power (Diesel)

� Basin Bridge (Naptha)

Generators Start up Supply required

� North Chennai

� Ennore TPS

� MAPS

� TCPL

� OPG

� Hi-Tech

� Kamatchi Sponge

From Andhra Pradesh

� 400 KV Chittor- Sriperumbudur S/C

� 400 KV Nellore –Alamathi S/C

� 230 KV Sullurpet –Gummidipundi S/C

� 230 KV Chittor –Thiruvallam S/C

From Karnataka

� 400 KV Kolar- Kalvindapttu S/C

From Subsytem –II

� 400 KV Sriperambudur- SV’Chatram -Pondy-Nevyli TS-II S/C

� 230 KV Arni –Singarpet S/C

� 230 KV Tiruvannamalai - Villupuram Acharapakam

137 of 206.


� 230 KV Thiruvallam -Singarpet

� By availing self start facility available at GMR Power house.

� By availing self start facility available at Basin bridge Power house.

� From Subsystem 2 through self start of Samalpatti/Kundah

complex/Mettur Dam


� 400 KV Neyveli TS-II – Pondy - SV’Chatram Sriperambudur S/C

� 400 KV Kolar - Kalivanthapattu S/C

� 400 KV Nellore – Alamathi D/C

� 230 KV Chittor – Thiruvalam S/C

� 230 KV Sulurpet – Gumidipoondi S/C

� 230 KV Singarpet - Arni S/C

� 230 KV Tiruvannamalai - Villupuram Acharapakam S/C

� 230 KV Singarpet - Thiruvallam S/C


TN SYSTEM


a) Self start GMR Power (196 MW) and extend supply to Basin Bridge

230/110 KV SS

b) Self start BasinBridge(120 MW) and extend supply to Basin Bridge 230

KV SS and Vysarpadi 110 KV SS

c) Avail supply from Basin Bridge 230 KV SS / Vysarpadi 110KV SS and

synchronise machines.

d) Both the lines i.e to 230 KV SS to Tondiarpet and Vysarpadi 110KV SS

to Tondiarpet should be closed for avert Overloading.

e) Supply from 230 KV Basin Bridge SS (or) Vysarpadi 110 KV SS would

be extended to Tondiarpet 230 KV /110KV Sub Station and from thereon

to NCTPS and ETPS via 230kV lines

f) NCTPS would avail supply from Tondiarpet 230 KV Sub Station (or)

Avail supply from Alamatty 400 KV SS and start up the units.

138 of 206.


g) ETPS would avail supply from Tondiarpet 230 KV Sub Station (or) Avail

supply from Alamatty 400 KV SS via Manali 230 KV SS and start up

the units.

h) Startup power would also be extended to MAPS via Sriperumbudur –

Oragadam – SP Koil or Via 230 KV SGPT – Arni feeder or Neyveli TS2

– Villupuram-Acharpakkam feeder.

i) Startup power for IPP’s like TCPL,HITECH, OPG, Kamakshi,etc would

also to be extended via 230 kV NCTPS – Goomidipoondi line

Startup Supply to MAPS

a) Option 1: 230KV NCTPS – 230KV Sriperumbudur-230KV Arani -

Kalpakkam

b) Option 2: 230KV NCTPS – 230KV Sriperumbudur -230KV Oragadam –

230KV Spkoil - Kalpakam

c) Option 3: 230KV Neyveli TS2 – 230KV Vilupuram – 230KV

Acharapakkam – Kalapakam

d) Option 4: 230 KV Singarpet – 230KV Arni – 230KV Spkoil - Kalpakam

e) Option 5: 230 KV Chittor – 230KV Tiruvallam – 230KV SPkoil –

Kalapakam

f) Option 6: 400KV Kolar – 400KV Kalivanthapattu -230KV SP.Koil -

Kalpakkam

139 of 206.


140 of 206.





SYSTEM

a. At GMR Vasavi



� Extend power supply to Basin Bridge 230kV/110 KV SS

b. At Basin Bridge Gas Station



� a)Extend power supply to Vyasarpadi

� b)Extend power supply to Basin Bridge 230/110 KV SS

c. At 110 KV Vyasarpadi


� Avail supply from Basin Bridge Power Station

� Extend supply to Tondiarpet 230 KV SS through 110KV line

d. At 230 KV Basin Bridge SS


� GMR Power Station via 110kv line

� (or) Avail supply from Basin Bridge Power Station

� Extend supply to Tondiarpet 230 KV SS

e. At 230 KV Tondiarpet SS


� Avail supply from 230 KV Basin Bridge SS

� (or) Avail supply from 110KV Vyasarpadi SS

� Extend supply to NCTPS

� Extend supply to ETPS

f. At 400/230 KV Alamathy SS


� Avail supply from APTRANSCO through 400 KV D/C Nellore -

Alamathy line.

� Extend power supply to NCTPS.

� Extend power supply to ETPS via. Manali 230 KV SS.

141 of 206.


� Extend power supply to Vallur -Sriperumbudur 400 KV SS.

g. At 400/230 KV Kalivanthapattu SS


� Avail supply from KPTCL through 400 KV D/C Kolar line.

� Extend supply to MAPS via SPKOIL 230 KV SS.

� Extend supply to NCTPS via Spkoil – Oragadam –

� Sriperumbudur 230 KV feeder.

h. At 230 KV NCTPS


� Avail supply from Tondiarpet 230KV SS(or)

� Avail supply from Alamathy 400 KV SS )

� Startup units

� Extend supply to Sriperumbudur 400 KV SS

� Extend supply to Gummidipoondi 230 KV SS

� Extend supply to Kilpauk 230 KV SS

� Extend supply to Mosur 230 KV SS

� Extend supply to Korattur 230 KV SS.

i. At 230 KV ETPS


� Avail supply from Tondiarpet 230 KV SS

� Avail supply from Alamatty 400 KV SS via Manali 230KV SS

� Avail supply from NCTPS

� Startup units

j. At 230 KV Gummidi Poondi SS


� Avail supply from NCTPS

� Avail supply from Sulurpet.

� Extend supply to TCPL and startup unit

� Extend supply to HITEC via Sipcot 110KV SS and startup unit

� Extend startup supply to Kamakshi & OPG IPPs (after

commissioning)

k. All machines at Gumidipoondi:

� Avail supply from Gumidipoondi

142 of 206.


� Startup OPG, TCPL, HITECH & Kamatchi Sponge units and

synchronise

l. At 230 TCPL


� Avail supply from Gumidipoondi

� Startup unit and synchronise

m. At 400/230 KV Sriperumbudur


� a) Avail Supply from 400 KV Alamatty - Vallur SS (or)

� b) Avail Supply from from NCTPS

� c) Extend Supply to SP.koil 230KV SS

n. M. At 230 KV Oragadam


� Avail Supply from Sriperumbudur

� Extend Supply to SP.koil 230KV SS

o. N. At 230 KV S.P.Koil


� Avail supply from Oragadam 230KV SS

� Avail supply from Kalvindapattu 230KV SS

� Extend Supply to MAPS

p. O. At 230 KV MAPS


� Avail supply from S.P.Koil 230 KV SS/Arani 230 KV SS/ Acharapakam

230 KV SS

� Startup the Units

q. P. At 230 KV Thiruvalam SS


� Avail supply from Chitoor.

� a) Extend supply to NCTPS via Mosur 230KV SS

� b) Extend supply to MAPS via SPKOIL 230 KV SS

The important loads can be taken up in consultation with LD. Other loads can

be released only after some units are started at GMR, Basin Bridge , NCTPS

and ETPS or in case of a robust interconnection with other Subsystems or

States.

143 of 206.


In case Subsystem 2 is energized the supply for startup can be obtained from

Neyveli TS2-Villupuram-Acharapakam-MAPS, Singarapet-Arani- MAPS and

Singarapet - Arani-Sriperumbudur.

7.9.3 Important loads in sub system 3

7.9.3.1 The following are traction loads in this sub system 3:

Sl.No Name of the

Traction

Fed by

01 Chennai MRTS 110 KV Chindhadaripet – MRTS #1 & 2

02 Ennore 110 KV Ennore SS – Traction #

03 Kadapperi 110 KV Kadapperi - SPKoil # 1- Traction #

04 Avadi 110 KV Korattur – Sriperumbudur #1 – Traction #

1 & 2

05 Acharapakkam 110 KV Acharapakkam SS – Traction #

06 Villupuram 110 KV Villupuram SS – Traction #

07 Mosur 110 KV Mosur SS – Arakkonam traction # 1 & 2

08 Thiruvalam 110 KV Thiruvalam SS – Traction #

09 Eraniel Eraniel – 110 KV S.R.Pudur-Kodayar # 1

7.9.3.2 The following are the critical loads in this sub system 3:

Sl.

No

Locations Fed by

01 Airport 110 KV Pallavaram / 230 KV Kadaperi SS

02 Secretariat

Complex SS

110KV High court – 230KV Basin Bridge SS

03 Raj Bhavan 110 KV Velachery SS/230 KV Tharamani SS

04 Highcourt

Complex

110 KV Highcourt SS / 230 KV BasinBridge SS

05 Water Works 110 KV Kipauk Water Washed Works / 230 KV

Kilpauk SS

144 of 206.


110 KV Semparambakkam SS / 230 KV Kadaperi

SS

06 Minjur De-

Salination Plant

110KV Manali – Metro water feeder

07 Factories

08 Heavy Vehicle

Factory

110 KV HVF SS / 400 KV Alamatty SS

09 Aavin Diary 110 KV SIDCO SS / 230 KV Manali SS

10 Puzhal Jail 110 KV Avadi SS / 230 KV Manali SS

11 MFL 110 KV MFL 1 / 230 KV Manali SS

110 KV MFL 2 / 230 KV Manali SS

110 KV CTCL SS

110 KV CMWSS SS

110 KV Melur SS

12 Port Trust 33 KV OHP SS / 230 KV Tondiarpet SS

Hospital

13 General

Hospital

110 KV High Court SS/230 KV Basin Bridge SS

14 Kilpauk Medical

College

110 KV Kilpauk SS/230 KV Kilpauk SS

15 Stanley 110 KV Seven Wells SS

16 Royapettah 110 KV Adyar ss / 230 KV Tharamani SS

17 TB Hospital 110 KV Chrompet SS / 230 KV Kadaperi SS

18 VIP Residents

19 Hon’ble

ChiefMinister of

Tamil Nadu

230 KV Mylapore SS

110 KV Adyar

21 Hon’ble minister

of Electricity

230KV Tharamani SS – 110KV Adayar

7.10 Details of Traction Substations of TN System

The traction substations in Tamil Nadu are as given below

145 of 206.

SN

Ra

ilwa

y S

ectio

n

Electric Division

Sub

syst

em

230 kV / 220kV

Feeding Point

110/132 KV

intervening

substation/Tappin

g if any

Grid Substation RLY. TSS

Tra

nsfo

rmer

capacity in M

VA

Phase d

eta

ils

Sanctioned load in

MV

A

Avg. D

em

and in

MV

A

Priority

Em

erg

ency m

in

requie

ment if a

ll

TS

S fed

Em

erg

ency m

in

requie

ment if

adja

cent T

SS

fed

DISCOM

Conta

ct N

o o

f T

PC

-

CU

G M

OB

Ennore T.P.SEnore

T.P.S/Ennore

Manali Manali/ETPS

Alamathi --

Sriperumbudur --

Tapping from

Sriprumbudur-

Korattur FDR

--

Mosur --

Sriperumbudur --

4 Vellore 3 Thiruvalam -- Thiruvalam Tiruvalam 2x21.6 B-R 17.4 15.91 A1 11.9 17 TANGEDCO

Chinnavarikkam

Pernambut

Vaduganthangal

Gudiyattam

Periya Paravaikal

Singarpettai --

Vinnamangalam --

Mylapore --

GMR Vasavi --

8 South 3 SP Koil Singaperumalkoil/

Kadaperi Tapped Tambaram 2x21.6 R-Y 17.5 16.42 A1+ 12.6 18 TANGEDCO

Acharapakkam --

S.P.Koil --

Neyveli --

Acharappakkam --

Villupuram --

Thiruvannamalai --

DETAILS OF TRACTION SUBSTATIONS IN TAMIL NADU

Details of Traction Substations and Its feeding SEB susbtation over Southern Railway

4.2 6 TANGEDCOVIllupuram 2x12.5 B-R 6 5.85 A1

7.28 A2 5.18 7.4 TANGEDCO

10Villupuram-

TrichyVillupuram 3 Villupuram

TANGEDCO

Chennai-

Villupuram9 Chengalpattu 3

AcharapakkamAcharapakkam 2x12.5 Y-B 7.4

B-R 11 9.37 A1+ 7.7 11

12.6 18 TANGEDCO

7 MRTS Central 3 Chintadripet Chindatripet 2x21.6

Tirupattur 2x21.6 Y-B 18.4 16.46 A1

Tiruvalam

6Jolarpettai-

SalemThirupattur 2 Tirupattur

18.6 16.03 A2 13.3 19 TANGEDCO

TANGEDCO

Arakkonam-

Jolarpettai5 Thirupattur 2

Vinnamangalam

Vadakathipatti Valathur 2x21.6 R-Y

Arakkonam 2x21.6 R-Y 17.5 15.61 A2

2x21.6 B-R 22 19.29 A1+ 15.42

Chennai-

Arakkonam

West 3 Avadi Avadi

3 Vellore 3 Mosur

13.19 A1 9.8 14 TANGEDCO

Traction Power

Control/Chennai

Phone :044-

25353540,

09003161382

09003161394

09003161381

09003161389

Sr.DEE/TRD/Chen

nai :044-25355213,

9003161362

22 TANGEDCO

12.6 18

1 Chennai-Gudur North 3 Tapped Ennore 2x21.6 R-Y 14

146 of 206.

Singarpettai --

Mettur Auto --

Arni --

SPCL --

Singarpettai --

MetturdamMetturdam/Singar

pettai

13 Salem 2 Nethimedu -- Nethimedu Salem 2x21.6 R-Y 8.8 7.71 A2 6.16 8.8 TANGEDCO

14Salem-

MetturdamMetturdam 2

Metturdam Hydro

P.H

Metturdam Hydro

P.H/Metturdam

Hydro

Tapped Metturdam 2x12.5 B-R 6.2 5.33 C 4.34 6.2 TANGEDCO

15 Salem-Erode Metturdam 2 Metturdam -- Sanniyasipatti Sankari Durg 2x21.6 B-R 13 12.03 A1 9.1 13 TANGEDCO

16 Erode 2 Ingur -- Ingur Ingur 2x21.6 R-Y 10.3 9.39 A2 7.21 10 TANGEDCO

17 Coimbatore 2 Arasur Arasur/ Sulur Tapped Sulur Road 2x21.6 Y-B 10.8 10.67 A1 7.56 11 TANGEDCO

Alandur --

Thuvakudi

Bhel EHT

K.Sathanur

19 Perambalur 2 Perambalur -- Koothur Ariyalur 2x21.6 Y-B 6 6.59 A1 4.2 6 TANGEDCO

20 Cudalore 2 Neyveli Deviyakuruchi/Ney

veli Tapped Vridhachalam 1x21.6 B-R 5.7 5.53 A2 3.99 5.7 TANGEDCO

Alandur --

Senkurichi

Thamaripadi

Ayyalur

22 Dindigul 1 Sempatti -- Dindigul Dindigul 2x21.6 Y-B 5 0.11 A2 3.5 5 TANGEDCO

23Trivandrum-

NagerkoilNagercoil 1 S.R.Pudur

SR

Pudur/Kodaiyar Tapped Erniel 1x21.6 R-Y 5 3.11 A2 3.5 5 TANGEDCO

Traction Power

Control/Trivandrum

: 0471-2332482,

0471-2336429,

09567869922

09567869923

09567869946,

DEE/TRD/Trivandr

um:0471-2324446,

9746769351

5 TANGEDCO

Traction Power

Control/Madurai :

0452-2308033,

8754570625,

DEE/TRD/Madurai

: 0452-2308080,

8056162319

Sempatti

1x21.6 R-Y 5 3.54 A1 3.5

6 TANGEDCO

Traction Power

Control/Trichy :

0431-2412720,

8056064318,

Sr.DEE/TRD/Trichy

: 0431-2414233,

9003864312

Tanjavur

21

Trichy-Madurai

Trichy 1 Vaiyampatti Vaiyampatti

1x21.6 R-Y 6 4.63 A2 4.218

Villupuram-

Trichy

Trichy 2 Ambikapuram Trichy

11.94 A1 9.1 13 TANGEDCO

Erode-Podanur

TANGEDCO

Traction Power

Control/ Salem

:Phone : 0427-

2330149,

09003956328

07708017399,

Sr.DEE/TRD/Sale

m : 0427-2440084,

9003956325

12 Dharmapuri 2 Bommidi Bommidi 2x21.6 R-Y 13

B-R 9.3 9.36 A2 6.51 9.311

Jolarpettai-

Salem

Thirupattur 2 Singarpettai Samalpatty 2x21.6

147 of 206.


LIST OF POWER STATIONS WITH BLACK START FACILITY AND BLACK START

MOCK DRILL OPERATION TENTATIVE PROGRAMME FOR 2014

SL

NO

POWER

STATION

INSTALLE

D

CAPACITY

UNIT

TYPE

STARTUP

FACILITY SYN.

FACILIT

Y

PROG.

DATE SOURCE

CAPACIT

Y

1 METTUR

DAM PH 4x12.5 (50) HYDRO HYDRO 375 KVA YES

2 SARKARPAT

HY PH 1 x 30 HYDRO Diesel 100 KVA YES

3 ALIYAR PH 1 x 60 HYDRO Diesel 100KVA YES

4 KUNDAH PH

4 2 x 50 HYDRO Diesel 100KVA YES

6 PUSHEP PH 3 x 50 HYDRO Diesel 2x500

KVA YES

7 MOYAR PH 3 x 12 HYDRO Pelten Wheel

Governor NO

8

PERIYAR

2*42 +

1*42(UNDER

PROGRESS) +

1* 35 HYDRO

(MACHINE

1,2,3 –

SEPARATEL

Y

EXCITED)

MACHINE 4

–(OLD) –

SELF

EXCITED

:DC

Source

2*42 +

1*42(UNDER

PROGRESS)

+ 1* 35

220V

300AH

YES

9 KODAYAR I 1 x 60 HYDRO DC

Source

110 V

400AH YES

10 KODAYAR II 1 x 40 HYDRO DC

Source

110 V

400AH YES

11 PAPANASA

M 4 x 8(32) HYDRO Diesel 125 KVA YES

148 of 206.


12 SERVALAR 1 x 20 HYDRO Diesel 260 KVA YES

13 BBGTPH 120(4*30) Naptha Diesel 500 KVA YES

14 GMR 196(4*49) LSHS Diesel 1800 KVA YES

149 of 206.


7.11 MOCK DRILL PROCEDURE

Sub-System -1

a. Kodaiyar:

� All 110KV lines connected to Kodaiyar 110KV bus shall be hand

tripped.

� Self Start Kodaiyar

� Charge Kayathar through Kodaiyar – Kayathar 110KV feeder – 1 via

veeravanallur (10MW)

b. Papanasam & Servalar

� All 110KV feeders connected at Papanasam shall be hand tripped

� Self Start at Papanasam

� Self Start at Servalar

� Extend supply from Papanasam to Servalar through 110KV

papanasam – Servalar Feeder

� Extend Supply to Kayathar through Papanasam - Kayathar Feeder 1

c. Periyar

� All 110KV lines connected to Periyar shall be hand tripped

� Extend supply to 110KV Theni through Periyar-Theni 110KV feeder –

3

Sub-system – 2

d. Kundha – PH4

� Hand tripp 230KV feeders at KPH4 and remote ends

� Self Start KPH4

� Extend supply to Thudiyalur and synhronise at thudiyalur


e. PUSHEP

� Hand tripp 230KV feeders at PUSHEP and remote ends

� Self Start PUSHEP

� Extend supply to Arasur and synchronise at Arasure


150 of 206.


f. Moyar

� Hand tripp all 110KV feeders at Moyar

� Self Start at Moyar

� Extend supply to Pykara and Synchronise at Pykara

g. Sarkarpathy

� Hand tripp Sarkarpathy – Aliyar Feeder

� Self Start Sarkarpathy

� Synchronise Sarkarpaty – Aliyar feeder at Sarkarpathy

h. Aliyar

� Hand tripp all the 110KV lines connected to Aliyar

� Self Start at Aliyar

� Extend supply to UDPT 110KV through Aliyar – UDPT 110KV feeder –

2 and synhronise at UDPT 110KV

i. Mettur Dam

� Hand tripp all the 110KV feeders at Mettur DAM

� Self Start MDPH

� Extend supply to Mettur Town and synhronise at Mettur Auto

Sub-system 3

j. Basin Bridge

� Trip all the 110KV feeders at Basin Bridge

� Self Start Basin Bridge

� Charge Basin bridge - Vyasarpadi feeder and synchronise at

Vyasarpadi.

k. GMR Vasavi

� Trip all the 110KV feeders at GMR Vasavi

� Self-Start units

� Charge 110KV GMR Vasavi - Basin Bridge feeder and synchronise at

Basin Bridge.

151 of 206.


8.0 RESTORATION OF KERALA SYSTEM

8.1 SYSTEM OVERVIEW

Kerala is predominantly Hydro power based system with few Diesel / Naptha power

stations. The Kerala system is divided into two Subsystems for the purpose of Black

Start Restoration, (North Kerala & South Kerala) which can be brought up

independently and synchronised subsequently once the Subsystem develops into

larger sustainable islands


Following are the Major Generating Stations in Kerala system

Sl No

POWER STATION

TYPE SECTOR / Ownership

SUB SYSTE

M

CAPACITY in MW

BLACK START

FACILITY

1 IDUKKI Hydro State 2 780 Available

2 RGCCPP,

Kayamkulam

Naptha

/Gas NTPC 2 360 Available

3 SABRIGIRI Hydro State 2 310

Available but

Cannot be

used since

dead line

charging is

not posible

4 LOWER

PERIYAR Hydro State 2 180 Available

5 BSES Naptha State IPP 2 157 Available

6 KDPP Diesel State 1 128 Available

7 KUTTIYADI +

KUTTIADI EXTN Hydro State 1 225

Available in Kuttiadi

152 of 206.


8 SHOLAYAR Hydro State 2 54 Available

9 NERIMANGALA

M Hydro State 2 48 Available

10 BDPP Diesel State 2 106 Not Available

8.3 LIST OF SUB-STATIONS WITH SYN FACILITY

SUB STATION VOLTAGE LEVEL

(KV)

SYNCHRONISING

FACILITY YES/NO

AREACODE 220 YES

NALLALAM 220 YES

MADAKKATHARA 220 YES

CHALAKUDY 110 YES

PALLOM 220 YES

NEW PALLOM 220 YES

BRAHMAPURAM 220 YES

KAYAMKULAM 220 YES

KALAMASSERY 220 YES

MUVATTUPUZHA 110 YES

POTHENCODE 220 YES

THALIPPARAMBA 220 YES

KANHIRODE 220 YES

EDAPPON 220 YES

KANIYAMPET 220 YES



Kerala does not have interconnections with other regions


A. With Karnataka

a) 220 kV S/C Kaniyampet – Kadakola

b) 110 kV S/C Manjeswara – Kulashekara

153 of 206.


B. With Tamil Nadu

a) 400 kV D/C Pallakad - Udumalpet

b) 400 kV D/C Trivandrum - Tirunelveli

c) 400 kV D/C Edamon – Tirunelveli ( Charged at 220kV)

d) 220 kV S/C Idukki - Udumalpet

e) 220 kV S/C Theni – Mozhiyar

f) 110 kV S/C Parassala - Kuzhithurai


SUB SYSTEM – 1: The sub-system 1 comprises of Kozhikode Diesel Generating

Power Station (KDPP) and Kuttiadi Hydro Power Station in the northern part of

Kerala. It includes the load centre like Nallalam, Areakode (Kozhikode), Kasarkode,

Taliparamba, Kannur, etc.,

SUB SYSTEM – 2: The sub-system 2 comprises of Major Hydro Stations Viz. Idukki,

Lower Periyar, Sabirigiri and RGCCPP Kayankulam (Naptha / Gas). It includes major

and important load centres like Trivandrum, Kalamassery, Pallam etc.,

154 of 206.


SUB SYSTEM

1

SUB SYSTEM

2

155 of 206.


8.6 RESTORATION OF SUBSYSTEM 1-(NORTH KERALA AREA)



A. During Total Regional Blackout and /or Total Blackout in Kerala

� Self starting of KDPP & Kuttiadi units.

� From Karnataka system through 220kV S/C Kadakola - Kaniyampet

line.


� From Karnataka system, through 220kV S/C Kadakola-Kaniyampeta

line.

� From Subsystem 2 through 220kV S/C Madakkathara – Areacode

line.

8.6.2 RESTORATION PROCESS FOR SUB-SYSTEM 1


a) Self start two units at KDPP Diesel generating Station, energise 110 kV

and extend supply to Nallam and connect 20 MW loads at Kozhikode.

b) Simultaneously self start units at Kuttiadi and extend start up supply to

Kuttiadi Exten and Addl Extn and Extend supply to Kozhikode 110KV

via Kakayam (5MW load) and Chevayur (5MW load)

c) Synchronise Supply from KDPP & Kuttiadi at Nallam

d) Extend Supply from Kozhikode 110kV to Nallalam 220kV.

e) Extend supply to Areakode from Nallam and gradually increase

generation as well as connected loads.

f) Extend Supply to essential loads in this subsystem.

g) As the generation picks up, this Island gets build-up by gradually providing

the Loads of Areacode / Nallalam

h) This Subsystem can be synchronized with Subsystem 2 at Areacode r

along 220kV Areacode – Madakathara .

156 of 206.


i) Kerala and Karnataka system can be synchronized at Kadakola /

Kaniyapet. This may be done after synchronizing the subsystem 2 with

Tamil Nadu system.

j) After this subsystem getting stabilized or getting synchronized with

main system, 220kV stations at Kanhirode, Taliparambu, Mylatti etc.,

can be energized & extend supply.

157 of 206.


158 of 206.



AND SUB-STATIONS DURING TOTAL REGIONAL BLACKOUT

AND / OR TOTAL BLACKOUT IN KERALA

(a) At KDPP


� Self start the machines

� Co-ordinate with SLDC and extend power supply to Kozhikode 110

kV.

(b) At KUTTIADI


� Self start the machines

� Extend supply to Kozhikode 110 kV via Kakkayam and chevayoor

(c) At NALLALAM


� Avail 110kV power supply from KDPP and Kuttiadi and

synchroniseExtend power supply to essential / important loads at

Nallalam.

� Extend power supply to 220kV from 110kV.

� Co-ordinate with SLDC and extend 220kV power supply to

Areakode lines for restoring essential and important loads at

Areakode.

(d) At AREAKODE (KOZHIKODE)


� Avail power supply from Nallalam.

� Restore essential and important Loads.

� Co-ordinate with SLDC for synchronizing with subsystem 2 through

220kV Areakode – Madakathara line

159 of 206.


8.6.3 RESTORATION OF SUBSYSTEM 1 DURING COLLAPSE OF THIS

SUBSYSTEM ALONE.

Power supply to Areakode can be availed from Karnataka through 220 kV S/C

Kadakola - Kaniyampet line. Alternately, it can be availed from Subsystem 2

through 220 kV S/C Madakkathara - Areakode line. In addition, the

generating units at KDPP / Kuttiadi is to be self started and 110kV / 220kV

lines are to be synchronized as per 8.6.2 above to restore the loads in

Northern parts of Kerala.

8.7 RESTORATION OF SUBSYSTEM 2 (SOUTHERN KERALA AREA)



A. In case of Total Regional Blackout and /or Total Blackout in Kerala

Since most of the generators in Kerala are having self start facilities, in

case of total grid collapse all major generators in Kerala System can come

up on their own.

� The Hydro generation at Idukki, Lower Periyar may be self started

first and extend startup power supply to Sabarigiri and loads at

Trivandrum, Kalamassery etc.,

� In case of failure of Kerala System alone emergency loads can be

availed from the neighbouring states through the following lines

From Tamil Nadu through

� 400 kV D/C Pallakad – Udumalpet to meet the loads of Thrissur,

Kalamassery & Palakkad

� 400 kV D/C Trivandrum – Tirunelveli to meet the loads of Trivandrum

� 220 kV D/C Edamon – Tirunelveli to meet the loads of Edamon

� 220 kV S/C Idukki – Udamalpet for starting up Idukki, if required

� 220 kV S/C Sabarigiri - Theni for starting up Sabarigiri, if required

160 of 206.


B. In case of Blackout of Subsystem 2 only

� From Subsystem 1 through 220 kV S/C Madakkathara -Areakode

line.

� Alternatively through the lines connected to Tamil Nadu as mentioned

above.

8.7.2 RESTORATION PROCESS FOR SUBSYSTEM 2


Start up power is obtained from self starting Hydro units of Idukki, Lower

Periyar, Sholayar, Neriamangalam, Poringal & Kayamkulam Generation. As

the generation picks up, this Island is built by gradually providing the Loads of

Kalamsserry, Pallom, Edamon, Pothencode, Madakathara etc. The details of

actions are as mentioned below:

a) Self start units of Idukki and extend supply to New Pallom &

Kalmaserry

b) Extend Supply to Muvatatupuzha, Mylattor & Idamalayar via

Kalmaserry 110 kV with total load of 75 MW & then to Pallom with

load of 25MW.

c) Self Start units at Lower Periyar and synchronise with Idukki and

increase loads at Kalamassery to 125MW.

d) Simultaneous to step “c” extend supply to Pothencode from Pallom via

Sabarigiri-Edamon to supply important loads at Pothencode. and start

units at Sabarigiri.

e) Extend startup supply to BDPP from Kalamassery or Lower Periyar

and extend supply to Brahamapuram essential loads (25MW).

f) Self Start units at Kayamkulam and synchronise Kayamkulam – New

Pallom at New Pallom and tie Kayamkulam - Edamon line at

Kayamkulam via Edappon/Kundra.

g) Extend supply to Madakathara loads from Idukki / Lower Periyar.

h) Start generation at Idamalayar (110kV) Hydro station.

161 of 206.


i) Self start units at Sholayar and extend start up supply to Poringal with

local loads (10MW) and extend supply to Chalakudyand then

synchronise Idamalayar-Chalakudy line at Chalakudy(110kV). Then

extend supply to Traction loads at Chalukudy via Aluva.

j) Self Start units at Neriamangalam. Synchronise Kalamassery-

Muvattupuzha and Neriamangalam- Muvattupuzha lines at

Muvattupuzha(110kV).

k) Extend startup supply to Sengulam(110kV) Hydro station.

l) Extend supply to Shornur (220kV) from Madakathara and further

synchronise with subsytem1 at Areakode

m) It can also be synchronized with 400 kV system at Pallakad or

Trivandrum and with Tamilnadu 220 kV System at Idukki 220kV

stations.

n) Extend supply to Traction loads and other essential loads

o) Self start units at BSES and synchronise with rest of the grid at

Kalamassery

162 of 206.


163 of 206.



AND SUBSTATIONS DURING TOTAL REGIONAL BLACKOUT

AND / OR TOTAL BLACKOUT IN KERALA

(a) At IDUKKI


� Selfstart one Unit at Idukki in the stage - II

� First stage units are unstable for independent operation and to be

started only after Idukki is synchronised with other generators.

� Charge the New Pallom line for providing essential loads at Pallom

area and extending the supply to Sabarigiri (start up power)

� Co-ordinate with SLDC and charge one of the two 220 kV circuits of

Idukki - Kalamassery for meeting essential loads at Kalamassery

� Charge 220kV Idukki - Lower Periyar line from Idukki. At Idukki

more units may be put into service as and when required, keeping

generation of 50 MW per unit.

� Co-ordinate with SLDC and charge Idukki – Madakathara line for

synchronizing with Subsystem1 at Madakathara

(b) At NEW PALLOM


� Avail power supply from Idukki and restore limited load

� Extend power supply to Pallam in consultation with SLDC and

Pallam

� Synchronise Kayankulam - New Pallom line at New Pallom in

consultation with SLDC and Kayankulam if Kayankulam generating

station has been self started and Kayankulam – New Pallom is

charged from Kayankulam end.

164 of 206.


(c) At PALLOM


� Avail power supply from New Pallom and restore limited load

� Extend power supply to Sabarigiri in consultation with SLDC and

Sabarigiri hydro station

� Extend power supply to BDPP in consultation with SLDC and BDPP

diesel generating station

(d) At SABARIGIRI


� Avail startup power supply either from Idukki through Pallom line or

from Pothencode (from 400 kV System) through Edamon line or

from Theni (Tamilnadu) 230kV line.

� In case power is available from Pallom line, extend power to

Pothencode through Edamon line for meeting important loads of

Edamon and further at Trivandrum.

(e) At LOWER PERIYAR


� Self start the machines and await for further instruction from SLDC.

� Extend power supply to Idukki if L.P generators are started first else

avail power supply from Idukki and synchronise generators with the

bus.


� Charge & synchronise 220kV Lower Periyar – Madakathara line in

consultation with SLDC

(f) At THRISSUR


� Avail supply from Idukki / L.Periyar Hydro station

� Restore essential and important loads

� Charge one of 400/220 kV ICTs

� Avail 400 kV Supply from Udamalpet

� Synchronise the two sub systems in consultation with SRLDC and

SLDC

� Extend power supply to Areacode for synchronization with Sub

system1 at Areacode .

165 of 206.


(g) At KALAMASSERY


� Avail power supply from Idukki.

� Restore essential and important loads

� Extend startup power supply to Idamalayar Hydro station through

Malayattoor line110kV line and supply loads at Mylatoor.

� Extend power supply to Muvattupuzha for supplying loads and for

synchronization with Nerimangalam at Muvattupuzha and startup

supply to Sengulum Hydro station.

� Extend power supply to Poringal & Sholayar Hydro stations through

Alva – Chalakudy 110kV lines

(h) At POTHENKODE


� Avail power supply from 400 kV system, if available in consultation

with SLDC

� Restore essential and important Loads

� Avail Power supply from Edamon synchronise with 400 kV system

in consultation with SLDC

(i) At Brahmapuram


� Avail Startup supply from Kalmaserry in consultation with SLDC


(j) At Kayankulam


� Self Start units at Kayamkulam and charge Kayamkulam – New

Pallom.

� Synchronise Kayamkulam - Edamon line at Kayamkulam via

Edappon/Kundra

(k) At Idamalayar


� Avail Start up supply from Mayalatoor and start the units

� Charge Idamalayar – Chalkudy in consultation with SLDC.

(l) At Sholayar

166 of 206.



� Self Start units at Sholayar

� Extend Start Up supply to Poringal

� Charge Sholayar – Chalkudy in consultation with SLDC.

� Synchronise Idamalayar – Sholayar in consultation with SLDC

(m) At Poringalkuthu


� Avail Start Up Supply from Sholyarl

� Charge Poringal – Chalkudy in consultation with SLDC.

� Synchronise Idamalayar – Poringal in consultation with SLDC

(n) At CHALAKUDY


� Avail power supply from Kalamaserry and Supply traction Loads.

� Avail power supply from Idamalayar / Poringal / Sholyar and

synchronise.

� Extend supply to traction and other essential loads.

(o) At Nerimangalam


� Self Start units at Nerimangalam

� Charge Nerimangalam – Muvattupuzha for synchronization at

Muvattupuzha in consultation with SLDC.

(p) At Sengulam


� Avail Start up supply from Muvattupuzha and start the units

8.7.2.3 Restoration of Subsystem 2 during collapse of this Subsystem

alone

As already explained earlier, during the restoration of Subsystem 2

alone start up power can be availed from Tamil Nadu through

a) 400 kV D/C Udumalpet - Pallakad - Thrissur to meet the loads of

Thrissur & Kalamassery

b) 400 kV D/C Tirunelveli - Trivandrum to meet the loads of Trivandrum

167 of 206.


c) 220 kV S/C Udamalpet - Idukki for starting up Idukki, (Check the

voltage at Udmalpet end. If it is below 220kV, then only Udamalpet –

Idukki can be charged)

d) 220 kV S/C Sabarigiri - Theni for starting up Sabarigiri, if required

e) 220 KV D/C Tirunelveli – Edamon

f) Alternately, power can be availed from Subsystem 1 through 220 kV

S/C Madakkathara - Areakode line. (Check the voltage at

Madakathara end. If it is below 220kV, then only lines eminating from

Madakathara can be charged)

8.8 SUPPLY DETAILS FOR RAILWAY TRACTION SYSTEM IN KERALA

The traction substation in kerala are detailed below

168 of 206.

SN

Railw

ay S

ection

Electric Division

Sub

syst

em

230 kV / 220kV

Feeding Point

110/132 KV

intervening

substation/Tappin

g if any


Tra

nsfo

rme

r

ca

pa

city in

MV

A

Ph

ase

de

tails

Sa

nctio

ne

d lo

ad

in

MV

A

Avg

. D

em

an

d in

MV

A

Pri

ori

ty

Em

erg

en

cy m

in

req

uie

me

nt if a

ll

TS

S fe

d

Em

erg

en

cy m

in

req

uie

me

nt if

ad

jace

nt T

SS

fe

d

DISCOM

Co

nta

ct N

o o

f T

PC

-

CU

G M

OB

Kalamssery Kodakara

Aluva

Kurmassery

2 Kalamssery Vytilla

Bramhapuram --

3

Ernakulam-

Allepy-

Kayankulam

Alleppy 2 Pallom -- Chengulam Punappara 1x12.5 Y-B 5 4.14 A2 3.5 5 KSEB

4

Ernakulam-

Kottayam-

Kayankulam

Puvanturt 2 Pallom -- Pallom Chingavanam1x21.6,

1x12.5R-Y 6 5.87 A1 4.2 6 KSEB

5Kayankulam-

KollamKundara 2 Kundara -- Kundara Periyanad

1x21.6,

1x12.5B-R 9 7.78 A2 6.3 9 KSEB

6Kollam-

TrivandrumPothencode 2 Pothencode -- Technopark Kazhakkutam 2x21.6 R-Y 8.5 7 A1 5.95 8.5 KSEB

7 Palakkad 2 Palakkad -- Kanjikode Kanjikode 2x21.6 B-R 12.5 10.63 A2 8.75 13 KSEB

8 Palakkad 2 Shornur -- Shornur Shornur 1x21.6,

1x12.5Y-B 9.1 8.51 A1 6.37 9.1 KSEB

Traction Power

Control/Trivandrum

: 0471-2332482,

0471-2336429,

09567869922

09567869923

09567869946,

DEE/TRD/Trivandr

um:0471-2324446,

9746769351

DETAILS OF TRACTION SUBSTATIONS IN KERALA

Podanur-

Soranur

Traction Power

Control/Palakkad :

Phone :0491-

2552686,

9746740013

Sr.DEE/TRD/Palak

kad: 0491-

2555513,

9746763301

8 7.58 A1 5.6 8 KSEB

5.95 8.5 KSEB

Madakkathara

2 Brahmapuram Kadavanthara Ernakulam 2x21.6 B-R

Chalakudi 2x21.6 R-Y 8.5 8.82 A21

Shoranur-

Ernakulam

Trichur 2 Chalakudi


169 of 206.


8.9 CRITICAL LOADS IN KERALA

a) Cochin port (West Island) – extend supply through 110kV Brhamapuram –

Kadavanthara line

b) TERLS – extend supply through 110kV Pothenkode – TERLS line


The procedure for mock drill exercise is as given below.

(a) KDPP:

� Self-start two units at KDPP Diesel generating Station

� Extend 110 kV supply and connect 20 MW loads at Kozhikode

(b) Kuttiadi Related Activities

� Pre-requisites 1. Instructions may be given in advance to the concerned City

Control Room, Electrical section offices about the probable interruptions if any may occur during the process of mock drill scheduled at 10:00Hrs on a particular date.

2. A dedicated phone no. at the concerned stations may be intimated to the Electrical section office for their exclusive communication regarding operations at 11kVside and authorize an operator for attending this at the station.

3. FCT/PLCC facility may be used at the concerned station for the communication during the process of Mock drill.

4. SCADA/Communication data to be ensured.

5. At 09-00 Hrs, arrangement may be made for feeding 110kV S/S Quilandy and 110kV Substation Westhill from 220 kV S/S Vatakara and switch off 110kV Chevayoor-WestHill feeder at Chevayoor end.

6. At 09-00 Hrs, arrangement may be made for feeding 110kV S/S Kunnamangalam and Koduvally from 220kV S/S Nallalam via 110kV Nallalam-Kunnamangalam feeder and switch off 110kV Kakkayam-Koduvally feeder at Kakkayam end.

� 09.00 Hrs at 220kV Substation, Nallalam.

1. 110kV NLCH-I feeder, and 110/11kV 12.5 MVA No.1 transformer to be shifted to 110kV Bus (B) and rest of the 110kV feeders are to be connected to 110kV Bus (A) with 110kV bus coupler in closed condition.

� 09.30 Hrs.at Kuttyadi Hydro Electric Project

170 of 206.


1. Switch off 110kV KKCH at Kakkayam end. 2. Switch off 25MW generator unit 1,2 & 3 3. Confirm 110kV KDKK feeder and 10 MVA, 110/11 kV

transformer is in switched off condition. 4. Open 110kV Bus section isolator between Unit 4(50 MW)

generator and others. 5. Ensure Unit 4 (50 MW) generator with 110kV KKCK and

KKKH feeders are tied with grid through Kanhirode supply.

� 09.45 Hrs at 110kV S/S Chevayoor 1. Switch off 110kV NLCH 1 & 2 and 110kV KKCH feeder

2. Segregate the 110kV BUS with 110kV NLCH 2 feeder ,110/11kV 10MVA Transformer, 110/66kV 25 MVA Transformer and 110kV KKCH feeder in one section.

3. Switch on 110kV NLCH 1 and Rest of the Load may be met with this feeder from Nallalam

4. Switch off 110kV NLCH 2 feeder at 10:00 hrs at Chevayoor

end

� 10.00 Hrs at Kuttiyadi Hydro Electric Project , 110KV S/s

Chevayoor and 220kV S/s Nallalam (Sequence of

operations for Mock drill)

1. Start the 160kVA DG set and avail auxiliary supply to Machine #1.

2. Start the black start machine #1 by taking the auxiliary supply from 160kVA DG set and energise 110kV Bus and load the system gradually up to 5 MW. (Ensure isolation of LT supply with that of 50 MW Generator). Monitor subsystem Parameters (freq. ,voltage and Load). Maintain sub system frequency above 49.5 Hz.

3. Ensure that 110kV Chevayoor bus is dead and then charge the 110kV feeder Kakkayam-Chevayoor.

4. Avail supply at Chevayur S/s by closing the CB of 110kV Kakkayam-Chevayoor feeder and load the system gradually in consultation with the LD and Kuttiady operators.

5. Start the machine #2 at Kuttiady using the auxiliary supply from Unit #1.

6. Switch off and isolate 110kV Bus coupler at Nallalam.

7. Extend the Supply to Nallalam S/s from Chevayoor through Nallalam-Chevayoor #1 feeder.

8. Energize the 110kV bus B at Nallalam substation and switch on 12.5 MVA Transformer and load the system gradually.

171 of 206.


9. Increase the 11kV load gradually at Nallalam end after consultation with the LD and Kuttiady operators and monitor subsystem Parameters (freq., voltage and Load).

10. Synchronise Unit #2 at Kuttiady with the subsystem (Unit #1).

11. Monitor the subsystem Parameters (freq., voltage and Load) at all stations. Maintain sub system frequency above 49.5 Hz . Care should be taken that there will be two system (Sub system and main system) in all the stages.

12. Increase the load gradually at Chevayoor and Nallalam in consultation with the Kakkayam Operator and monitor voltage, frequency, MW and MVAR.

13. Monitor System Parameters like Voltage and Frequency at both 110kV buses at Nallalam

14. Synchronise the Subsystem of 110kV Bus B with the main System of 110kV Bus A at Nallalam through 110kV Bus coupler Breaker using Synchronizing Trolley. Coordinate with Kakkayam for adjusting the Voltage and Frequency.

The following points are also to be noted. 1. The splitting of Buses are to be carried out sufficiently earlier

before the commencement of Mock drill (Mock Drill scheduled to start at 10:00 hrs on Scheduled date).

2. The frequency of the subsystem should always be maintained above 49.5Hz.

3. As there is possibility of over voltage due to lightly loaded feeders, special attention has to be given to limit the subsystem voltage.

4. All operations have to be done in consultation with LD Station, Kalamassery.

5. Advance information to the public regarding supply interruption through media has to be arranged from concerned substations.

6. Advance information to the concerned distribution section offices should be given from the substations to avoid permit work or back feeding of the identified feeders.

(c) IDUKKI


� Selfstart one Unit at Idukki in the stage - II

� First stage units are unstable for independent operation and to be

started only after Idukki is synchronised with other generators.

172 of 206.


� Charge the New Pallom line and extending the supply to Sabarigiri

(start up power)

� Co-ordinate with SLDC and charge one of the two 220 kV circuits of

Idukki - Kalamassery

� Charge 220kV Idukki - Lower Periyar line from Idukki. At Idukki more

units may be put into service as and when required, keeping

generation of 50 MW per unit.

� Co-ordinate with SLDC and charge Idukki – Madakathara line for

synchronizing with Subsystem1 at Madakathara

(d) SABARIGIRI


� Avail startup power supply either from Idukki through Pallom line or

from Pothencode (from 400 kV System) through Edamon line or from

Theni (Tamilnadu) 230kV line.

� In case power is available from Pallom line, extend power to

Pothencode through Edamon line for meeting important loads of

Edamon

(e) LOWER PERIYAR


� Self-start the machines and await for further instruction from SLDC.

� Extend power supply to Idukki if L.P generators are started first else

avail power supply from Idukki and synchronise generators with the

bus.


� Charge & synchronise 220kV Lower Periyar – Madakathara line in

consultation with SLDC

(f) Brahmapuram


� Avail Startup supply from Kalmaserry in consultation with SLDC


(g) At Kayankulam


� Self Start units at Kayamkulam and charge Kayamkulam – New

Pallom.

173 of 206.


� Synchronise Kayamkulam - Edamon line at Kayamkulam via

Edappon/Kundra

(h) At Idamalayar


� Avail Start up supply from Mayalatoor and start the units

� Charge Idamalayar – Chalkudy in consultation with SLDC.

(i) At Sholayar


� Self Start units at Sholayar

� Charge Sholayar – Chalkudy in consultation with SLDC.

� Synchronise Idamalayar – Sholayar in consultation with SLDC

(j) At Poringal


� Self Start units at Poringal

� Charge Poringal – Chalkudy in consultation with SLDC.

� Synchronise Idamalayar – Poringal in consultation with SLDC

(k) At Nerimangalam


� Self Start units at Nerimangalam

� Charge Nerimangalam – Muvattupuzha for synchronization at

Muvattupuzha in consultation with SLDC.

(l) At Sengulam


� Avail Start up supply from Muvattupuzha and start the units

174 of 206.


8.11 BLACK START MOCK DRILL SCHEDULE FOR 2014

Sl No POWER

STATION TYPE

CAPACITY in MW

SUB SYSTE

M

BLACK START

FACILITY

Mock Drill Schedule

1 IDUKKI Hydro 780 2 Available

2 RGCCPP,

Kayamkulam

Naptha

/Gas 360 2 Available

3 LOWER

PERIYAR Hydro 180 2 Available

4 BSES Naptha 157 2 Available

5 KDPP Diesel 128 1 Available

6 SHOLAYAR Hydro 54 2 Available

7 NERIMANGALA

M Hydro 48 2 Available

8 PORINGAL Hydro 32 2 Available

175 of 206.


9.0 ELECTRIC TRACTION

9.1 SOTHERN REGION RAILWAY TRACTION

Based on the Enquirey report recommendations. The meeting were held with

railways on 24.07.13, 23.09.13 & 22.11.13, A chapter on Railways is being

introduced which covers in detail. In This regard SRLDC officials visited the

Bangarpet traction Substation and Traction control centre, Bangalore to understand

the specific requirements of railway traction. Nodal Officers were identified. Specific

recommendations were made with target dates.

Railways work under zonal model, wherein zones cut across states boundary.

It is required to understand the zones in Southern Region.

9.2 RAILWAY ZONES IN SOUTHERN REGION.

The following Railway zones are fed from the network of southern region.

a. Southern Railway covers Tamil Nadu, Part of Andhra Pradesh, Kerala with

head quarters at Chennai

b. South Western Railway covers Karnataka with head quarters at Bangalore

c. South Central Railway covers Majority of the Andhra Pradesh with head

quarters at Secunderabad

d. East Coast Railway Covers Part of Andhra Pradesh.

9.3 TYPICAL TRACTION SUBSTATION SINGLE LINE DIAGRAM.

The typical layout of traction substation is attached below

176 of 206.


177 of 206.


9.4 NODAL OFFICERS

The following officers are identified as Nodal officers for the purpose of single point

contact during crisis management.

Name of Railways

Name of Nodal Officer(S/Shri)

Designation Phone No. Mobile No. Address Email id

Southern Rly

Shri K.Palani Dy. Chief Ele. Engr.

044-25355384

9003160309 Headquarters Office Electrict Deptt. Chennai- 600 003

[email protected] [email protected]

South Western Railway

Shri R.N.Meena

Senior Divisional Electrical Engineer /Traction Distribution

080 22871365

9731666305

Divisional Railway Manager (Traction Distribution) South Western Railway Divisional Office Traction Distribution Bangalore -23

[email protected] [email protected]

South Central Rly

Shri B.V.Ramana Kumar

Dy. Chief Ele. Engr.

040-27820409

09701370310 Headquarters Office, Electrical Branch Rail Nilayam Secunderabad PIN-500 071

[email protected]

East Coast Rly

Shri M.C.Meena

Sr.Div. Ele. Engr./TRD

0891-2746240

08978080305 Office of the Chief Electgrical Engineer, Rail Sadan Chandrasekharpur Bhubaneswar-751017

[email protected]

Bangalore Metro Rail Corpn. Ltd

Shri A.Dattatreyulu

DGM (Traction) 080-25191074 /75

9448287995 Bangalore Metro Rail Corpn, Ltd Bangalore -560027

[email protected]

9.5 RAILWAY TRACTION MAP & DATA

The railway traction data both in terms of data & SLD is detailed below. The priorities

has been identified and accordingly

178 of 206.

SN

Railw

ay S

ection

Electric Division

Subs

yste

m

230 kV / 220kV

Feeding Point

110/132 KV

intervening

substation/Tapping

if any


Tra

nsfo

rmer

capacity in M

VA

Phase d

eta

ils

Sanctioned load in

MV

A

Avg.

Dem

and in

MV

A

Priority

Em

erg

ency m

in

requie

ment

if a

ll

TS

S f

ed

Em

erg

ency m

in

requie

ment

if

adja

cent

TS

S f

ed

DISCOM

Conta

ct

No o

f

TP

C-C

UG

MO

B

Ennore T.P.SEnore

T.P.S/Ennore

Manali Manali/ETPS

Alamathi --

Sriperumbudur --

Tapping from

Sriprumbudur-

Korattur FDR

--

Mosur --

Sriperumbudur --

4 Vellore 3 Thiruvalam -- Thiruvalam Tiruvalam 2x21.6 B-R 17.4 15.91 A1 11.9 17 TANGEDCO

Chinnavarikkam

Pernambut

Vaduganthangal

Gudiyattam

Periya Paravaikal

Singarpettai --

Vinnamangalam --

Mylapore --

GMR Vasavi --

8 South 3 SP Koil Singaperumalkoil/

Kadaperi Tapped Tambaram 2x21.6 R-Y 17.5 16.42 A1+ 12.6 18 TANGEDCO

Acharapakkam --

S.P.Koil --

Neyveli --

Acharappakkam --

Villupuram --

Thiruvannamalai --

3

3

Vellore 3

Thirupattur 2

Thirupattur

North

West

Central

Chengalpattu

Villupuram

Arakkonam-

Jolarpettai

Jolarpettai-

Salem

MRTS

Chennai-

Villupuram

Villupuram-

Trichy

2

3

5.18 7.4 TANGEDCO

2x12.5 B-R 6 5.85 A1 4.2 6 TANGEDCO

2x12.5 Y-B 7.4 7.28 A2

12.6 18 TANGEDCO

2x21.6 B-R 11 9.37 A1+ 7.7 11 TANGEDCO

2x21.6 Y-B 18.4 16.46 A1

13.19 A1

12.6 18 TANGEDCO

2x21.6 R-Y 18.6 16.03 A2 13.3 19 TANGEDCO

2x21.6 R-Y 17.5 15.61 A2

Vinnamangalam

Tiruvalam

9.8 14 TANGEDCOChennai-Gudur

Avadi Avadi 2x21.6 B-R 22 19.29 A1+ 15.4 22 TANGEDCO

Chennai-

Arakkonam

3 2x21.6 R-Y 14

VIllupuram

Traction Power

Control/Chennai

Phone :044-

25353540,

09003161382

09003161394

09003161381

09003161389

Sr.DEE/TRD/Chenn

ai :044-25355213,

9003161362

3


Vadakathipatti Valathur

Mosur Arakkonam

Tirupattur Tirupattur

Chintadripet Chindatripet

Acharapakkam Acharapakkam

Villupuram

Tapped Ennore1

2

3

5

6

7

9

10

179 of 206.

SN

Railw

ay S

ection

Electric Division

Subs

yste

m

230 kV / 220kV

Feeding Point

110/132 KV

intervening

substation/Tapping

if any


Tra

nsfo

rmer

capacity in M

VA

Phase d

eta

ils

Sanctioned load in

MV

A

Avg.

Dem

and in

MV

A

Priority

Em

erg

ency m

in

requie

ment

if a

ll

TS

S f

ed

Em

erg

ency m

in

requie

ment

if

adja

cent

TS

S f

ed

DISCOM

Conta

ct

No o

f

TP

C-C

UG

MO

B


Singarpettai --

Mettur Auto --

Arni --

SPCL --

Singarpettai --

MetturdamMetturdam/Singar

pettai

13 Salem 2 Nethimedu -- Nethimedu Salem 2x21.6 R-Y 8.8 7.71 A2 6.16 8.8 TANGEDCO

14Salem-

MetturdamMetturdam 2

Metturdam Hydro

P.H

Metturdam Hydro

P.H/Metturdam

Hydro

Tapped Metturdam 2x12.5 B-R 6.2 5.33 C 4.34 6.2 TANGEDCO

15 Salem-Erode Metturdam 2 Metturdam -- Sanniyasipatti Sankari Durg 2x21.6 B-R 13 12.03 A1 9.1 13 TANGEDCO

16 Erode 2 Ingur -- Ingur Ingur 2x21.6 R-Y 10.3 9.39 A2 7.21 10 TANGEDCO

17 Coimbatore 2 Arasur Arasur/ Sulur Tapped Sulur Road 2x21.6 Y-B 10.8 10.67 A1 7.56 11 TANGEDCO

Alandur --

Thuvakudi

Bhel EHT

K.Sathanur

19 Perambalur 2 Perambalur -- Koothur Ariyalur 2x21.6 Y-B 6 6.59 A1 4.2 6 TANGEDCO

20 Cudalore 2 Neyveli Deviyakuruchi/Ney

veli Tapped Vridhachalam 1x21.6 B-R 5.7 5.53 A2 3.99 5.7 TANGEDCO

Alandur --

Senkurichi

Thamaripadi

Ayyalur

22 Dindigul 1 Sempatti -- Dindigul Dindigul 2x21.6 Y-B 5 0.11 A2 3.5 5 TANGEDCO

Thirupattur 2

Dharmapuri 2

Erode-Podanur

6.51 9.3 TANGEDCO

2x21.6 R-Y 13 11.94 A1 9.1 13 TANGEDCO

2x21.6 B-R 9.3 9.36 A2 Singarpettai Samalpatty

Bommidi Bommidi

Traction Power

Control/ Salem

:Phone : 0427-

2330149,

09003956328

07708017399,

Sr.DEE/TRD/Salem

: 0427-2440084,

9003956325

Jolarpettai-

Salem

11

12

18

Villupuram-

Trichy

Trichy 2 Ambikapuram Trichy 1x21.6 R-Y 6 4.63 A2 4.2 6 TANGEDCO

Traction Power

Control/Trichy :

0431-2412720,

8056064318,

Sr.DEE/TRD/Trichy

: 0431-2414233,

9003864312

Tanjavur

21 Trichy 1 Vaiyampatti Vaiyampatti 1x21.6 R-Y 5 3.54 A1 3.5 5 TANGEDCO

Traction Power

Control/Madurai :

0452-2308033,

8754570625,

DEE/TRD/Madurai :

0452-2308080,

8056162319

SempattiTrichy-Madurai

180 of 206.

SNR

ailw

ay S

ection

Electric Division

Subs

yste

m

230 kV / 220kV

Feeding Point

110/132 KV

intervening

substation/Tapping

if any


Tra

nsfo

rmer

capacity in M

VA

Phase d

eta

ils

Sanctioned load in

MV

A

Avg.

Dem

and in

MV

A

Priority

Em

erg

ency m

in

requie

ment

if a

ll

TS

S f

ed

Em

erg

ency m

in

requie

ment

if

adja

cent

TS

S f

ed

DISCOM

Conta

ct

No o

f

TP

C-C

UG

MO

B


23Trivandrum-

NagerkoilNagercoil 1 S.R.Pudur

SR

Pudur/Kodaiyar Tapped Erniel 1x21.6 R-Y 5 3.11 A2 3.5 5 TANGEDCO

Kalamssery Kodakara

Aluva

Kurmassery

2 Kalamssery Vytilla

Bramhapuram --

26

Ernakulam-

Allepy-

Kayankulam

Alleppy 2 Pallom -- Chengulam Punappara 1x12.5 Y-B 5 4.14 A2 3.5 5 KSEB

27

Ernakulam-

Kottayam-

Kayankulam

Puvanturt 2 Pallom -- Pallom Chingavanam1x21.6,

1x12.5R-Y 6 5.87 A1 4.2 6 KSEB

28Kayankulam-

KollamKundara 2 Kundara -- Kundara Periyanad

1x21.6,

1x12.5B-R 9 7.78 A2 6.3 9 KSEB

29Kollam-

TrivandrumPothencode 2 Pothencode -- Technopark Kazhakkutam 2x21.6 R-Y 8.5 7 A1 5.95 8.5 KSEB

30 Palakkad 2 Palakkad -- Kanjikode Kanjikode 2x21.6 B-R 12.5 10.63 A2 8.75 13 KSEB

31 Palakkad 2 Shornur -- Shornur Shornur 1x21.6,

1x12.5Y-B 9.1 8.51 A1 6.37 9.1 KSEB

32 Chennai-Gudur Nellore 1 Manarpoluru Mannarpoluru Mannarpoluru Sullurpeta 2x21.6 Y-B 13 11.91 A2 9.1 13 APTRANSCO

33Arakkonam-

ReniguntaTirupathi 1 Renigunta Puttur Puttur Puttur 2x21.6 R-Y 14 12.24 A1 9.8 14 APTRANSCO

Ernakulam Kadavanthara

Podanur-

Soranur

24

Shoranur-

Ernakulam

Trichur 2 Chalakudi Chalakudi 2x21.6 R-Y 8.5 8.82 A2 5.95 8.5 KSEB

Madakkathara

25 Brahmapuram

Traction Power

Control/Palakkad :

Phone :0491-

2552686,

9746740013

Sr.DEE/TRD/Palakk

ad: 0491-2555513,

9746763301

Traction Power

Control/Chennai

Phone :044-

25353540,

09003161382

09003161394

09003161381

09003161389

Sr.DEE/TRD/Chenn

ai :044-25355213,

9003161362

Traction Power

Control/Trivandrum

: 0471-2332482,

0471-2336429,

09567869922

09567869923

09567869946,

DEE/TRD/Trivandru

m:0471-2324446,

9746769351

2x21.6 B-R 8 7.58 A1 5.6 8 KSEB

181 of 206.


S.P.KOIL

VINNAMANGALAM VADAKATHIPATTI VALATHUR

SINGARPETTAI TIRUPATTUR TIRUPATTUR

VINNAMANGALAM

SINGARPETTAI SINGARPETTAI SAMALPATTI

METTUR AUTO

ARNI

SINGARPETTAI BOMMIDI BOMMIDI

NETHIMEDU NETHIMEDU SALEM

METTUR DAM SANNIYASIPATTI SANKARI DRUG

INGUR INGUR

ARASUR SULUR SULUR ROAD

KANJIKODEPALAKKAD

SHORNUR SHORNUR

MADAKKATHARA

CHALAKUDIKALAMSSERI

BRAMHAPURAM

KADAVANTARA ERNAKULAMKALAMSSERY

PALLOM CHENGULAM PUNAPPARA

PALLOM CHINGAVANAM

KUNDARA PERIYANAD

POTHENCODE TECHNOPARK KAZHZKKUTAM

ERNIELS.R.PUDUR KODAYAR

ALAMATHI AVADI

SRIPERUMBUDUR

SRIPERUMBUDUR KORATTUR

SRIPERUMBUDUR MOSUR ARAKKONAM

MOSUR

AVADI

TIRUVALAM TIRUVALAM TIRUVALAM

EN

NO

RE

T.P

.S.

EN

NO

RE

MA

NA

PO

LU

RU

ENNORESULLURPETA

MA

NA

LI E

TP

S

RE

NIG

UN

TA

PUTTURACHARAPAKKAM ACHARAPAKKAM ACHARAPAKKAM

S.P.KOIL KADAPERI TAMBARAM

ACHARAPAKKAM VILLUPURAM VILLUPURAM

VILLUPURAM

TIRUVANNAMALAI

NEYVELI

VRIDHACHALAM

PERAMBALUR KOOTHUR ARIYALUR

ALANDUR AMBIKAPURAM TRICHY

TANJAVUR K.SATHANUR

ALANDUR VAIYAMPATTI VAIYAMPATTI

SEMPATTI

SEMPATTI DINDIGUL DINDIGUL

NEYVELI

CHENNAI CENTRAL

CHENNAI BEACH

CHENNAI EGMORE

KANNIYAKUMARI

MY

LA

PO

RE

CH

INT

AD

RIP

ET

CHINDATRIPET

GM

R V

AS

AV

I

GRID POWER SUPPLY ARRANGEMENTS FOR TRACTION SUB-STATIONS

OF SOUTHERN RAILWAY

MOSUR

TECHNOPARK

230/110kV SS

110kV SS

RLY. TSS

INDEX

METTUR DAM

ME

TT

UR

DA

M H

YD

RO

PH

ME

TT

UR

DA

M H

YD

RO

PH

Chinnavarikkam Pernambut

Periya ParavaikalVaduganthangal GudiyattamTHIRUVALAM

SPCL

KODAKARA

ALUVA KURUMASSERY

VYTILLA

Thuvakudi BHEL EHT

AyyalurSenkurichi Thamaripadi

MA

NA

PO

LU

RU

PU

TT

UR

KANJIKODE

SHORNUR

PALLOM

KUNDARA

DEVIAKURICHI

INGUR

METTURDAM SINGARPETTAI

CHALAKUDI

A2 A1

A+

A2

A1

A2

A1

A2

A1

A2

A1

A2

A1

A2

A1

A2

A1

A2

A1

A2

A3

A1

A1+

A1+

A2

A1

A2

A1

A2

A1

A2

A2

A1

182 of 206.

1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 19

Sl.

NoRailway section

Electric

Division

/Circle

Subsys

tem No.220 KV feeding point

132 KV intervining

substation if /132

132 KV tap line


Station

Transformat

ion capacity

(MVA)

Phase

details

Sanctio-

ned load

in MVA

Average

demand

in MVA

Priority

Emergency

minimum

requirement

MVA if all

substations

are given

Emergency

minimum

requirement

MVA if

alternatvie

substations

are given

DISCOM Traction power control centre

1 Manubolu 220 KV -- 1 x 21.6

1 Sullurpet 220KV Naidupeta 1 x 12.5

2 Nellore 1 Nellore 220 KV -- Brhmadevam Niduguntapalem 1 x 21.6 Y - R 6.00 4.14 A2 3 -- APSPDCL

3 Nellore 1 Nelloe 220 KV -- NTS Padugupadu1 x 21.6

1 x 12.5B - Y 14.00 12.61 A2 7 11 APSPDCL

4 Nellore 1 Ongole 220 KV Kandukuru Kavali Kavali 2 x 21.6 R - Y 16.00 14.33 A2 8 -- APSPDCL

5 Ongole 1 Ongole 220 KV -- Ongole Ongole 2 x 21.6 R - B 17.00 16.13 A1 9 13 APSPDCL

1 Paruchuru 220 KV --

1 Tadikonda 220 KV Guntur

7 Guntur 1 Tadikonda 220 KV Guntur Tenali Tenali 2 x 21.6 R - B 15.00 11.55 A1 8 11 APSPDCL

1 Gunadala 220 KV Ganguru/Autonagar

1 Tadikonda 220 KV --

9 Eluru 3 Bhimadolu 220 KV Peddavegi Eluru Vatlur 2 x 21.6 R - Y 16.00 15.71 A2 8 -- APEPDCL

3 Bhimadolu 220 KV --

3 Nidadavolu 220 KV Nidadavolu

11 Rajahmundry 3 Bommuru 220 KV -- Bommuru Rajahmundry1 x 21.6

1 x 12.5R - B 12.00 11.67 A1+ 6 -- APEPDCL

Samalkot 220 KV --

Bommuru 220 KV

Parawada 220 KV Koruprolu Payakaro peta Tuni 2 x 21.6 B - Y 15.00 13.27 A2 8 -- APEPDCL

Pendurthi 220 KV -- Kasimkota Anakapalli 2 x 21.6 R - B 14.00 12.71 A1 7 11 APEPDCL

Renigunta 220 KV

Sullurpet 220KV

15 Tirupathi 1 Renigunta 220 KV -- Renigunta Renigunta 2 x 21.6 R - B 18.00 15.61 A1 9 14 APSPDCL

Chinakampalli 220 KV

Renigunta 220 KV

Kadpa 220 KV - Kadapa

Chinakampalli 220 KV Moolavanka RTSS

Kondapuram 220 KV Gandikota LIS &

Muddanur RTSSMuddanuru

Yerraguntla 220 KV - RTSS

Kalikiri 220 KV Rompicherla

Renigunta 220 KV Tirupathi & KP Mitta

3

8 APSPDCL

Traction power control /

Guntakal Phone: 08552-

229679, 9701374080

Sr.DEE/Traction/ Guntakal :

08552-220037, 9701374301

2 x 12.5 Y - B 10.00 7.63 A1 5Tirupathi 1Renigunta -

Katpadi19 Pakala Pakala

12.00 9.6818

Renigunta -

Guntakal Kadapa17

A2 6 9 APSPDCLKadapa 1 Muddanuru 2 x 21.6 R - B

Kadapa 12.00 14.35 A1 6 -- APSPDCL

-- APSPDCL

Kadapa 1

2 x 21.6 B - Y1

12.00 13.26 A116 -- Razampeta 220 KV Razampeta (220 KV) 2 x 21.6 R - Y

Gudur -

Renigunta14.00 13.08 A2 714 Kalahasthi132KV Venkatagiri Venkatagiri 2 x 12.5

8 12 APEPDCL

Nellore 1 B - Y

6 9 APSPDCL

13

Gudur Gudur

6

12 Rajahmundry 3 Peddapuram

Guntur

11.99 A1 7 11

DETAILS OF TRACTION SUBSTATIONS IN SOUTH CENTRAL RAILWAY

Vijayawada-

Visakhapatnam


Vijayawada Phone: 0866-

2571739, 9701373941,

9701373942

Sr.DEE/TrD/Vijayawada :

08662573117, 9701373330

Samalkot 2 x 21.6 R - Y

APSPDCL

Guntur Bapatla Bapatla 2 x 12.5 Y - B 15.00 9.69 A2 8 -- APSPDCL

Vijayawada -

Chennai

Tadepalli Krishna canal Junction 2 x 21.6 Y - R 18.00 15.36 A1+ 9 14 APSPDCL

Eluru Pedatadepalli Tadepalligudem 2 x 21.6 Y - B 16.00 12.49 A2 8 12 APEPDCL

16.00 14.33 A1

Visakhapa-

tnam

1

8

10

R - B 14.00Nellore

183 of 206.

Sl.

NoRailway section

Electric

Division

/Circle

Subsys


132 KV intervining

substation if /132

132 KV tap line


Station

Transformat

ion capacity

(MVA)

Phase

details

Sanctio-

ned load

in MVA

Average

demand

in MVA

Priority

Emergency

minimum

requirement

MVA if all

substations

are given

Emergency

minimum

requirement

MVA if

alternatvie

substations

are given


20 Vijayawada 1 Kondapalli 220 KV Kondapalli Kondapalli 2 x 13.5 B - R 15.00 13.02 A1 8 -- APSPDCL

21 Khammam 1 Chilakallu 220 KV -- Chilakallu Bonakal 2 x 21.6 B - Y 17.00 15.92 A2 9 13 APNPDCL

22 Khammam 3 Budidampadu 220 KV -- Budidampadu Dornakal 2 x 21.6 R - Y 19.00 16.83 A1 10 14 APNPDCL

Sitarampatnam 220 KV --

Budidampadu 220 KV Khammam

Warangal 220 KV

KTPS 132 KV

25 Warangal 2 Warangal 220 KV - Madikonda Kazipet 2 x 21.6 R - Y 15.00 15.39 A1 8 11 APNPDCL

Warangal 220 KV

RTS - B

27 Karimnagar 2 Ramagundam220 KV -- Ramagundam 132 KV Ramagundam1 x 21.6

1 x 13.5Y - R 19.00 17.01 A1+ 10 14 APNPDCL

28 Adilabad 2 Ramagundam220 KV -- Bellampalli 132 KV Bellampalli 2 x 21.6 B - Y 15.00 14.98 A1 8 -- APNPDCL

29 Adilabad 2 Ramagundam220 KV Bellampalli 132 KV Sirpur Kagaznagar Sirpur Kagaznagar1 x 21.6

1 x 13.5B - R 16.00 15.34 A2 8 12 APNPDCL

Warangal 220 KVMadikonda &

Dharmasagara '-

Waddekottapally -

Warangal 220 KV Jangaon

Bhongir 220 KV -

32Ranga Reddy

east1

Ghanapur 220 KV

(Hyderabad)-- Ghanapur Ghatkesar 2 x 21.6 R - Y 18.00 16.23 A1 9 14 APCPDCL

Shapur Nagar 220KV --

Gachibowli Erragadda

Tandur 220 KV Pargi

Yeddumailram 220 KV Dharmasagara

35Ranga Reddy

South1 Tandur 220 KV -- Tandur Tandur 1 x 21.6 R - Y 10.00 9.70 A2 5 8 APCPDCL

-- 1 Gooty 220 KV SS -

1 Gooty 220 KV RS -

-- Tadipatri 220 KV -

Gooty 220Kv RSGudipadu &

Ankireddy palli

A2 5 -- APCPDCL

1

APCPDCL

B - R 10.00 10.28Ranga Reddy

South134

Vikarabad

RTSSVikarabad 2 x 21.6

B - Y 15.00 14.19 A1 8 1133Hyderabad

(HDN)1 Sanath Nagar Sanath Nagar 2 x 21.6

16.00 17.53 B 8 12 APCPDCL

11.87 A2 6 -- APNPDCL

Nalgonda 2 Aler 132 KV Aler 2 x 21.6

9 APNPDCL

Warangal 230 Raghunathpalli132KV Ghanpur 2 x 21.6 Y - B 12.50

2 x 21.6 Y - B 14.00 12.49 A2 7Karimnagar 2/326 - Jamikunta Jamikunta

TPC / Secunderabad 040-

27823137, 9701371347,

9701371346, 9701371348

Sr.DEE/Trd/Secund-erabad :

040-27833031, 9701371301

2/3

9.68 A1 6 6 APNPDCL

R - B 14.00 12.7324

23

- Nekkonda Nekkonda 2 x 13.5

Vijayawada -

Kazipet

Warangal A2 7 -- APNPDCL

Khammam 3 Kothagudam RTSS Badhrachalam Road 2 x 21.6 Y - B 12.00

Gooty

37

TPC / Secunderabad 040-

27823137, 9701371347,

9701371346, 9701371348

Sr.DEE/TRD/Secund-erabad :

040-27833031, 9701371301

NOTE 1. Komali and Gooty TSS are upcoming TSSs in Andhra pradesh which are yet to be commissioned.

--

Renugunta -

Guntakal

Gooty RTSS

31 R - B

Kazipet -

Ballarsha

Kazipet-

Secunderabad-

wadi

2X21.6 R - B 10.0036 A2 5 -- APCPDCL Traction power control /

Guntakal Phone: 08552-

229679, 9701374080

Sr.DEE/TR/Guntakal : 08552-

220037, 9701374301 APCPDCL5 8Komali Komali 2X21.6 R - B 10.00 A2--

184 of 206.


TU

NI

VA

TLU

R

TA

DE

PA

LLIG

UD

EM

GUDUR

KATPADI

VENKATAGIRI

RA

JA

MP

ET

220/132 kV RENIGUNTA

PAKALA

VENKATAGIRI

KAVALI

NELLORE CHENNAI

NIDIGUNTAPALEM

KAVALI

TADEPALLI

TENALI

BAPATLA BAPATLA

TRACTION SUB-STATION

132kV GRID SUB-STATIONS

220kV GRID SUB-STATIONS


OF SOUTH CENTRAL RAILWAY IN ANDHRA PRADESH

GH

AN

PU

R

ALE

R

WADI

22

0/1

32 k

V G

HA

NA

PU

R (

HY

DE

RA

BA

D)

NEKKONDA

BONAKALU

NEKONDA

220/132 kV RAMAGUNDAM

MADIKONDA

JAMIKUNTA JAMIKUNTA

SIRPUR -

GADCHANDUR (MAHARASTRA)

SIRPUR KAGHAZNAGAR

BELLAMPALLI

WIRUR

BALHARSHAH

VISAKHAPATNAM

KOTHAGUDAM RTSS

TA

ND

UR

22

0 k

V /

132 k

V T

AN

DU

R

VIK

AR

AB

AD

TA

ND

UR

TSS/GSS AS ON 08-10-2013(To SRPC)

SA

NA

TH

NA

GA

R

ALE

R

RA

GH

UN

AT

H-

-PA

LLI

KAGHAZNAGAR

BHADRACHALAM ROAD

220/132 kV BUDIDAMPADU

220/132 kV CHILLAKALLU

ELU

RU

PE

DA

TA

DE

PA

LLI

220/1

32 k

V B

OM

MU

RU

PE

DA

PU

RA

M

PA

YA

KA

RA

OP

ET

A

KA

SIM

KO

TA

KA

DA

PA

R

TS

S

KALAHASTHI

MANUBOLU

BRAHMADEVAM

ONGOLE

220/132 kV ONGOLE

PARUCHURU

GUNTURTADIKONDA

GANGURU / AUTO NAGAR

220 kV / 132 kV KONDAPALLI

SITARAMPATNAM

WARANGAL

RTS-B

RAMAGUNDAM

BELLAMPALLI

RAMAGUNDAM

BH

IMA

DO

LU

SA

MA

LK

OT

PA

RA

WA

DA

PE

ND

UR

TH

I

CH

INK

AM

PA

LLY

WA

RA

NG

AL

SH

AP

UR

NA

GA

R

MU

DD

AN

UR

U

KO

MA

LI

GO

OT

Y

GO

OT

Y R

TS

S

TA

DIP

AT

RI

220/1

10 k

V S

ED

AM

(KA

RN

AT

AK

A)

MA

LK

HA

ID R

OA

D

WIRUR T S S LOCATED TO MAHARASHTRA

MALKHAID ROAD T S S (110 kV) LOCATED IN KARNATAKA

KOMALI & GOOTY T S S s ARE YET TO BE COMMISSIONED

GUNTAKAL

INDEX:

NTS PADUGUPADUNELLORE

VIJAYAWADA

RENIGUNTA

ROMPICHERLA

MITTA

KALIKIRI

SULLURPET

RENIGUNTA

NAIDUPETASULLURPET

KANDUKURU

GUNTURTADIKONDA

GUNADALA

TADIKONDA

PE

DD

AV

EG

I

NID

AD

AV

OLU

NID

AD

AV

OLU

BO

MM

UR

U

KO

RU

PR

OLU

RE

NIG

UN

TA

KA

DA

PA

MO

OLA

VA

NK

AC

HIN

KA

MP

ALLY

MU

DD

AN

UR

U R

TS

S

GA

ND

IKO

TA

LIS

YE

RR

AG

UN

TLA

KO

ND

AP

UR

AM

KO

MA

LI

\pt4

5;G

UD

IPA

DU

& A

NK

IRE

DD

Y

PA

LLI

GO

OT

Y R

S

GO

OT

Y S

S

GO

OT

Y R

S

KTPS

KHAMMAM BUDIDAMPADU

MA

DIK

ON

DA

&

DH

AR

MA

SA

GA

RA

WA

DD

EK

OT

AP

ALLY

JA

NG

AO

N

BH

ON

GIR

ER

RA

GA

DD

AG

AC

HIB

OW

LI

VIK

AR

AB

AD

RT

SS

PA

RIG

I

DH

AR

MA

SA

GA

RA

YE

DD

UM

AIL

AR

AM

WARANGAL

WARANGAL

BH

IMA

DO

LU

WA

RA

NG

AL

A2

A2

A1

A1

A2

A2

A2

A1

A1

A1

A2

A1

A1

A1

A1

A1

A1

A

A2 A2

A1 A1

A1

A2

A2

A+

RAMAGUNDAM

A2

A2

A2

A2

A2

A2

A2

A2

A2

A+

A+

RA

JA

HM

UN

DR

Y

KRISHNACANAL JN.

SA

NA

TN

AG

AR

GH

AT

KE

SA

R

BELLAMPALLI

KAZIPET

DORNAKA

L

A2

KONDAPALLI

TENALI

ONGOLE

GUDUR

SA

MA

LK

OT

AN

AK

AP

AL

LI

RA

ZA

MP

ET

A

KA

DA

PA

PAKALA

A1

RENIGUNTA

185 of 206.

S.No.Railway

section

Sub

system

No.

Electric

Division/

Circle

220 KV

feeding

point

132 KV

intervining

substation if

132 KV tap line

Grid

substationRTSS

Transformati

on capacity

(MVA)

Phase

details

Sanc-

tioned

load in

MVA

Average

demand in

MVA

Priority

Emergency

minimum

requirement

MVA if all

substations

are given

Emergency

minimum

requirement

MVA if

alternative

substations

are given

Source of

supplyControled by

1Khurda-

Palasa3 Srikakulam Tekkali - Palasa Baruva 1X21.6 R-B 14 14.2 A2 7 14 APEPDCL

Traction power

control/ Kurdha-

Road, 0674-2491538

2 3 Garividi Tekkali - Tekkali Naupada 2X21.6 Y-B 13 13.8 A1 7 13 APEPDCL

Tekkali - Tekkali 1X21.6

GarividiPydi

BhimavaramC.K.Palem 1X12.5

Garividi -

PendurthyGoldstar &

TB VaraOntithadi

Pendurthy - 1X21.6

Gajuwaka 1X12.5

Gajuwaka -

PendurthySimhachalam &

ACC

Pendurthy Goldstar 1X13.5

Garividi - 1x12.5

Garividi T.B.Vara


Vara

Garividi T.B.Vara


Vara

Garividi T.B.Vara


Vara

A1 8 15 APEPDCL

5

Duvvadda

Simha-

chalamAPEPDCLR-Y 15

11 APEPDCL

4 3 Vizia-nagaramVizia-

nagaram2 x 21.6 R-Y 15 15.6

DETAILS OF TRACTION SUBSTATIONS IN EAST COAST RAILWAY

Garividi33 Ponduru Y-B 11 11.5 A2 6

14.7 A1 8 15

Visakha

patnam3 5 96

Pasala-

Duvadda

VSEZ

3Visahka

patnam

Simha

chalam

7.5 APEPDCLT.B.Vara

2X21.6 R-Y 9 9.5 A2 APEPDCL

8.67 3 PaaderuSrungavarap

ukota (SKT)Y-B 7.5 A2 4

9

3 Paaderu Araku

Kottavalsa-

Koraput

10 3 Paaderu Araku

Tyada 2X12.5 B-R 13.5 13.48

13 11.4 A2 7 13B-R APEPDCL

A1 7 13.5 APEPDCL

3 Paaderu Araku Similiguda 2X12.5

A1 5 9 APEPDCL

Traction power

control /Visakha-

patnam, 0891-

2746245, 0891-

2705812

Gorapur 1X12.5 R-Y 9 8.8

186 of 206.


ONTITHADI VIZIANAGARAM

PENDURTHY SIMHACHALAM SIMHACHALAM NORTH

GAJUWAKA

DUVVADDA

PALASA

TEKKALI TEKKALI NAUPADA

BARUVA

PONDURU

220 KV SS

132 KV SS

RAILWAY TSS

INDEX

PENDURTHY TB VARA

GARIVIDI

A2

A1

A2

A1

A1

A2

CHILAKALAPALEMGARIVIDI

TEKKALI

PYDI BHIMAVARAM

VSEZPENDURTHY

GAJUWAKA

SIMHACHALAM &

ACC

HOWRAH

GORAPUR

SIMILIGUDA

TYADA

T.B. VARA S. KOTA

A1

A2

A1

A2

KIRANDUL

GOLDSTAR

ARAKU

ARAKU T.B.VARA

GOLDSTAR & T.B.VARA

ARAKUGARIVIDI

PENDURTHY

T.B.VARA

GOLDSTAR

& T.B.VARA

KOTTAVALASA

GARIVIDI

PENDURTHY

T.B.VARA

GOLDSTAR

& T.B.VARA

GARIVIDI

PENDURTHY

PENDURTHY

GARIVIDI

CHENNAI


OF EAST COAST RAILWAY IN APEPDCL AREA

TEKKALI

187 of 206.

S.No. Railway section

Electric

Division/

Circle

Sub

system

No.

220 KV

feeding

point

132 KV

intervining

substation

if 132 KV

tap line

Grid

substation

Railway

Traction

Sub

Station

Transfor

mation

capacity

(MVA)

Phase

details

Sanc-

tioned

load in

MVA

Average

demand

in MVA

Priority

Emergency

minimum

requirement

MVA if all

substations are

given

Emergency

minimum

requirement

MVA if

alternative

substations are

given

Source of

supplyControled by

1 Jolarpet-Bangalore Hoody 1 Hoody 220 - Hoody 220 Whitefield 2 X 20 R-Y 8.5 8 A2 5 8.5 BESCOM

2 Jolarpet-Bangalore Kolar 1 Kolar 220 - Kolar 220 Bangarpet 2 X 20 R-Y 14 13 A1 10 14 BESCOM

DETAILS OF TRACTION SUBSTATIONS IN SOUTH WESTEREN RAILWAY

TPC/Bangalore,

080-22871334 ,

973166350

188 of 206.


KOLAR BANGARPET (A1)

Bangalore


OF SOUTH WESTERN RAILWAY

HOODY 230kV SS

RLY. TSS

INDEX

Jolarpet

WHITEFIELD (A2)HOODY

189 of 206.

1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 19

Sl.

No

Railway

section

Electric

Division

/Circle

Subsys


132 KV intervining

substation if /132

132 KV tap line


Station

Transforma

tion

capacity

(MVA)

Phase

details

Sanctio-

ned load in

MVA

Average

demand

in MVA

Priority

Emergency

minimum

requirement

MVA if all

substations

are given

Emergency

minimum

requirement

MVA if

alternatvie

substations

are given


Hoody 220 kV -- Hoody 66kV

HAL 220 kV HAL 66kV

-- SRS Peenya 66kV

Welcast 66kV

Subramanyapura 220 kV -- Subramanyapura 66kV

Sommanahalli 220 kV Khoday RS 66kV

Vrushbavathi 220 kV -- Vrushbavathi 66kV

NRS 220 kV NRS 66kV

Remarks Any single source is required. At present both substations are required


DETAILS OF TRACTION SUBSTATIONS IN BMRCL

1Byappanhalli -

Mysore RoadHOODY 1 Byappanahalli 2 x 25 3 phase 4.00 2.00 A 1 1 BESCOM


Phone: 080-25191075,

DGM/Trd 9448287995

2Jalahalli -

PuttenahalliPeenya 1 SRS Peenya 220 kV Peenya 2 x 25 3 phase 4.00 2.00 A 1 1 BESCOM


Phone: 080-25191075,

DGM/Trd 9448287995

3Jalahalli -

PuttenahalliPeenya 1 *Puttenahalli 2 x 25 3 phase 4.00 2.00 A 1 1 BESCOM


Phone: 080-25191075,

DGM/Trd 9448287995

4Byappanhalli -

Mysore RoadPeenya 1 *Mysore Road 2 x 25 3 phase


Phone: 080-25191075,

DGM/Trd 9448287995

4.00 2.00 A 1 1 BESCOM

190 of 206.


HOODY 220 / 66KV BYAPPANAHALLI(A1)

MYSORE ROAD


OF BMRCL

HOODY 220kV SS

RLY. TSS

INDEX

BYAPPANAHALLI

HAL 220 / 66KV

VRISHBAVATHI 220 / 66KV

JALAHALLI R V ROAD

WELCAST 66KV

SRS PEENYA 220 / 66KVSOMMANAHHALY 220

S R PURA 220 / 66KV

KHODAY RS 220 / 66KV

PEENYA 220

NRS 220 / 66KV

*MYSORE ROAD(A1)

*PUTTENAHALLI(A1)PEENYA(A1)


191 of 206.


ANNEXURE-I

LIST OF POWER STATIONS WITH BLACK START FACILITY:

ANDHRA PRADESH

POWER

STATION

INSTALLED

CAPACITY UNIT

TYPE

START UP FACILITY SYNCHRONISIN

G FACILITY SOURCE

CAPACIT

Y (MW) (YES/NO) N'SAGAR 1*110+7*100.8 HYDRO DG SET 250 KVA YES

SRISAILAM RB 7*110 HYDRO DG SET 800 KVA YES

LOWER SILERU 4*115 HYDRO DG SET 250 KVA YES

MACHKUND 70%(3*23+3*1

7) HYDRO DG SET 250 KVA YES

T.B.DAM 80%(4*9+ 4*9) HYDRO HOUSE

SET 350 KVA YES UPPER SILERU 4*60 HYDRO DG SET 250 KVA YES

SRISAILAM LB 6*150 HYDRO DG SET

2*1000 KVA YES

JURALA 39*6 HYDRO YES

GMR BARGE 237 NAPTHA YES

KARNATAKA

POWER

STATION

INSTALLED

CAPACITY UNIT

TYPE


G FACILITY SOURCE

CAPACIT

Y (MW) (YES/NO) SHARAVATHY 10*103.5 HYDRO DG SET 437.5 KVA YES

VARAHI 4*115 HYDRO DG SET 625 KVA YES KADRA 3*50 HYDRO DG SET 625 KVA YES

KODASALLI 2*40 HYDRO DG SET 400 KVA YES

NAGJHARI 1 *135 +

5 *150 HYDRO DG SET 625 KVA YES GHATAPRABH

A 2*16 HYDRO DG SET 310 KVA YES SUPA 2*50 HYDRO DG SET 310 KVA YES

LINGANAMAKKI 2*27.5 HYDRO DG SET 312 KVA YES

MALLAPUR 2*4.5 HYDRO DG SET 35 KVA YES STRP 4*60 HYDRO DG SET 600 KVA YES

ALMATTI 1*15+5*55 HYDRO DG SET 600 KVA YES YELEHANKA 6*21.32 DIESEL DG SET 750 KVA YES

TATA POWER 16.26 * 5 HFO,

DIESEL DG SET 250 KVA YES

192 of 206.


KERALA

POWER

STATION

INSTALLE

D

CAPACIT

Y

UNIT

TYPE

START UP FACILITY

SYNCHRONISIN

G FACILITY SOURCE

CAPACIT

Y

(MW) (YES/NO) KUTTIADI

+KAES 3*25+1*50

+2*50 HYDRO DG SET 160 KVA YES

SHOLAYAR 3*18 HYDRO DG SET 25KVA YES NERIMANGALA

M 3*15 HYDRO DC START YES L.PERIYAR 3*60 HYDRO DG SET 250KVA YES

IDUKKI 6*130 HYDRO DG SET 310KVA YES KDPP 8*16 LSHS DG SET 500KVA YES

RGCCPP 2*115+1*1

30 NAPHTHA DG SET 3MW YES

BSES 3*43.5+1*3

5.5 NAPHTHA DG SET 1325KVA*2 YES

TAMIL NADU

POWER

STATION

INSTALLED

CAPACITY UNIT

TYPE


G FACILITY SOURCE

CAPACIT

Y (MW) (YES/NO) KUNDAH-4 2*50 HYDRO DIESEL 100 KVA YES KUNDAH-6 1*30 HYDRO DIESEL 100 KVA YES

METTUR DPH 2*12.5+2*10 HYDRO DIESEL * 375 KVA YES ALIYAR 1*60 HYDRO DIESEL 30 KVA YES

PERIYAR

2*42 +

1*42(UNDER

PROGRESS) +

1* 35 HYDRO

(MACHINE 1,2,3 –

SEPARATELY EXCITED)

MACHINE 4 –(OLD) – SELF

EXCITEDE YES PAPANASAM 4*8 HYDRO DIESEL 125 KVA YES SERVALAR 1*20 # HYDRO DIESEL 250 KVA YES KODAYAR 1 1*60 HYDRO SELF EXCITED YES

KODAYAR 2 1*40 HYDRO SELF EXCITED YES SARKARPATHY 1*30 HYDRO DIESEL 100 KVA YES

PUSHEP 3*50 HYDRO DIESEL 2*500 KVA YES BASIN BRIDGE 4*30 GAS DIESEL 500 KVA YES SAMALPATTY 7*15 DIESEL DIESEL 500 KVA YES GMR VASAVI 4*50 DIESEL DIESEL 2250 KVA YES

193 of 206.


ANNEXURE-II

LIST OF MAJOR SUB-STATIONS WITH SYNCHRONISING FACILITY:

ANDHRA PRADESH


(KV)

SYNCHRONISING

FACILITY YES/NO

Mydukur 220 YES Kondapalli 220 YES

Gooty 220 YES Nunna 220 YES Garividi 220 YES

Markapur 220 YES Ongole 220 YES

Somayajulapalli 220 YES

Thallapalli 220 YES Malkaram 220 YES

222 KV Shapurnagar 220 YES 222 KV Dindi 220 YES Miryalaguda 220 YES

Budidampadu 220 YES Dichpalli 220 YES

Kalwakurthy 220 YES Tadikonda 220 YES Bommuru 220 YES

Nidadavole 220 YES Podili 220 YES

Chandrayangutta 220 YES

Bhongiri 220 YES Narketapalli 220 YES Samarlakota 220 YES

All 400KV Station 400 YES

194 of 206.


KARNATAKA


(KV)

SYNCHRONISING

FACILITY YES/NO

HOODY 400/220 YES HOODY 220 YES

NELAMANGALA 400/220 YES RTPS 400/220 YES

TALAGUPPA 400/220 YES KADAKOLA 220 YES

YERANDANAHALLY 220 YES SHIMOGA 220 YES BIDNAL 220/110 YES KEMAR 220 YES

BELGAUM 220 YES BAGALKOTE 220 YES

PEENYA 220 YES LINGAPURA 220 YES AMBEWADI 220 YES

B’BAGEWADI 220 YES LINGASUGUR 220 YES

GUTTUR 220 YES MAHALINGAPUR 220 YES

KERALA


(KV)

SYNCHRONISING

FACILITY YES/NO

AREACODE 220 YES NALLALAM 220 YES

MADAKKATHARA 220 YES CHALAKUDY 110 YES

PALLOM 220 YES NEW PALLOM 220 YES

BRAHMAPURAM 220 YES KAYAMKULAM 220 YES KALAMASSERY 220 YES

MUVATTUPUZHA 110 YES

POTHENCODE 220 YES THALIPPARAMBA 220 YES

KANHIRODE 220 YES EDAPPON 220 YES

KANIYAMPET 220 YES

195 of 206.


TAMIL NADU


(KV)

SYNCHRONISING

FACILITY YES/NO

ACHARAPAKKAM 230 YES

ALAGARKOIL 230 YES ALUNDUR 230 YES

AMUTHAPURAM 230 YES ANUPPANKULAM 230 YES

ARANI 230 YES ARASUR 230 YES

BASIN BRIDGE 230 YES CHECKANOORANI 230 YES

CUDDALORE 230 YES DEVIAKURICHY 230 YES EACHANGADU 230 YES

GOBI 230 YES

GUMMIDIPOONDI 230 YES HOSUR 230 YES INGUR 230 YES

K.R. THOPPUR 230 YES KADALANGUDI 230 YES

KADAPERI 230 YES KARAIKUDI 230 YES

KARIAMANGALAM 230 YES KAVANOOR 230/110 YES KAYATHAR 230 YES

KILPAUK 230 YES KODIKURUCHI 230 YES

KORATTUR 230 YES

KOYAMBEDU 230 YES MAMBAKKAM (SIPCOT) 230 YES

MANALI 230 YES METTUR 230 YES MOSUR 230 YES

MYLAPORE 230 YES

NOKIA 230 YES NEMMELI THIPPAYAKUDI 230 YES

OK MANDAPAM 230 YES ORAGADAM 230 YES PALLADAM 230 YES PASUMALAI 230 YES

PERAMBALUR 230 YES

PONNAPURAM 230 YES

PUDHANSANDHAI 230 YES

PUDUKOTTAI 230 YES PUGALUR 230 YES

RENGANATHAPURAM 230 YES

196 of 206.



(KV)

SYNCHRONISING

FACILITY YES/NO

S.P. KOIL 230 YES

S.R.PUDUR 230 YES SALEM 230 YES

SAMAYAPURAM 230 YES SANGANERI 230 YES SEMBATTY 230 YES

SINGARAPET 230 YES

SIRUSERI 230 YES SRIPERUMBUDUR 230 YES

TARAMANI 230 YES THANJAVUR 230 YES

THENI 230 YES THIRUVANNAMALAI 230 YES

THIRUVARUR 230 YES TONDIARPET 230 YES

TRICHY 230 YES TUTICORIN AUTO 230 YES

TUTICORIN SIPCOT 230 YES UDAYATHUR 230 YES UDUMALPET 230 YES

UNJANAI 230 YES VALUTHUR 230/110 YES VEERANAM 230 YES

VILLUPURAM 230 YES VINNAMANGALAM 230 YES

THIRUVALAM 230 YES

197 of 206.


ANNEXURE-III

LIST OF RAILWAY TRACTION STATIONS

Sl. No. NAME OF TSS AGENCY

1 Gudur APTRANSCO

2 Niduguntapalem APTRANSCO

3 Padugupadu APTRANSCO

4 Kavali APTRANSCO

5 Ongole APTRANSCO

6 Bapatla APTRANSCO

7 Tenali APTRANSCO

8 Krishna canal Junction APTRANSCO

9 Vatlur APTRANSCO

10 Tadepalligudem APTRANSCO

11 Rajahmundry APTRANSCO

12 Samalkot APTRANSCO

13 Tuni APTRANSCO

14 Anakapalli APTRANSCO

15 Venkatagiri APTRANSCO

16 Renigunta APTRANSCO

17 Razampeta (220 KV) APTRANSCO

18 Kadapa APTRANSCO

19 Muddanuru APTRANSCO

20 Pakala APTRANSCO

21 Kondapalli APTRANSCO

22 Bonakal APTRANSCO

23 Dornakal APTRANSCO

198 of 206.



24 Gudur APTRANSCO

24 Badhrachalam Road APTRANSCO

25 Nekkonda APTRANSCO

26 Kazipet APTRANSCO

27 Jamikunta APTRANSCO

28 Ramagundam APTRANSCO

29 Bellampalli APTRANSCO

30 Sirpur Kagaznagar APTRANSCO

31 Ghanpur APTRANSCO

32 Aler APTRANSCO

33 Ghatkesar APTRANSCO

34 Sanath Nagar APTRANSCO

35 Vikarabad APTRANSCO

36 Tandur APTRANSCO

37 Gooty APTRANSCO

38 Komali APTRANSCO

39 Sullurpet APTRANSCO

40 Puttur APTRANSCO

41 Baruva APTRANSCO

42 Naupada APTRANSCO

43 Ponduru APTRANSCO

44 Vizia-nagaram APTRANSCO

45 Simha- chalam APTRANSCO

46 Duvvadda APTRANSCO

47 Srungavarapukota (SKT) APTRANSCO

199 of 206.



48 Tyada APTRANSCO

49 Similiguda APTRANSCO

50 Gorapur APTRANSCO

51 Whitefield KPTCL

52 Bangarpet KPTCL

53 Byappanahalli KPTCL

54 Peenya KPTCL

55 Chalakudi KSEB

56 Ernakulam KSEB

57 Punappara KSEB

58 Chingavanam KSEB

59 Periyanad KSEB

60 Kazhakkutam KSEB

61 Kanjikode KSEB

62 Shornur KSEB

63 Ennore TANTRANSCO

64 Avadi TANTRANSCO

65 Arakkonam TANTRANSCO

66 Tiruvalam TANTRANSCO

67 Valathur TANTRANSCO

68 Tirupattur TANTRANSCO

69 Chindatripet TANTRANSCO

70 Tambaram TANTRANSCO

71 Acharapakkam TANTRANSCO

200 of 206.



72 VIllupuram TANTRANSCO

73 Samalpatty TANTRANSCO

74 Bommidi TANTRANSCO

75 Salem TANTRANSCO

76 Metturdam TANTRANSCO

77 Sankari Durg TANTRANSCO

78 Ingur TANTRANSCO

79 Sulur Road TANTRANSCO

80 Trichy TANTRANSCO

81 Ariyalur TANTRANSCO

82 Vridhachalam TANTRANSCO

83 Vaiyampatti TANTRANSCO

84 Dindigul TANTRANSCO

85 Erniel TANTRANSCO

201 of 206.


ANNEXURE -IV

Mock drill for startup power to Simhadri STPS

1. Name of Power Utility/Generating Station : Simhadri TPS

2. Date / Time of Mock-drill : 04.08.13 / 09:30 Hrs

3. Location site of Mock-drill : Simhadri TPS / Gazuwaka HVDC

4. Observers :

1. General Manager, NTPC

2. Shift-in-charge, Simhadri, NTPC

3. Shift-in-charge of SRLDC & ERLDC

4. DGM(OS) SRLDC,POSOCO

5. SE,APTRANSCO

5. Scenario of mock emergent situation : Extending start up power to Simhadri TPS during Complete black out of AP / SR

6. Objective : Availing start-up power from Eastern region through AC By-Pass at HVDC Gazuwaka

7. Chronological order of events logged :

09:41 Code received for Power flow reduction from 600MW to 400MW made 09:45 Power flow reduced from 600MW to 400MW &

East bus voltage increased from 388kV to 392kV 09:47 Code received for Power flow reduction from 400MW to 200MW made 09:51 Simhadri confirmed that all LT side isolation has been completed as well as

opening of 400kV bus sectionaliser for Bus # 4 09:52 Power flow reduced from 400MW to 200MW &

East bus voltage increased from 393kV to 404kV 10:07 Code for commencement of Black Start Mock exercise received.

SRLDC Code: 90, ERLDC Code: 108 & NLDC Code: 29 10:09 Instruction given for tripping of Jeypore – Gajuwakha 400kV line # 2 and by-

pass FSC at Jeypore. Convert L/R in to B/R at Gajuwakha Voltage observed at south Bus is 416kV & at East bus is 404kV

10:21 Jeypore – Gajuwakha 400kV line # 2 H/T from Gajuwakha end. On receipt of instruction at 10:09hrs, Jeypore took action for by-passing FSC and then trip from Jeypore end. However, as the time taken was more, jeypore was advised to clear the working personal from switchyard and the line was tripped from Gajuwakha end. Subsequently Jeypore was asked to by-pass the FSC.

10:22 Instruction given for reducing HVDC power flow from 200MW � 0MW 10:22 HVDC Pole – 2 blocked and connected filters are removed

East Bus Voltage observed was 393kV 10:25 Power flow reduced from 200MW to 0MW &

East bus voltage increased from 393kV to 412kV 10:27 HVDC Pole – 2 blocked and connected filters are removed

East Bus Voltage observed was 393kV

202 of 206.


10:27 Gajuwakha – Simhadri 400kV line H/T from Gajuwakha end & Activities for isolation of South Bus – I started.

10:27 NTPC Simhadri Bus Section # 4 got isolated from SR grid 10:28 Line Reactor of Jeypore – Gajuwakha line # 2 at Gajuwakha has been

converted as Bus Reactor. East bus Voltage at has got reduced from 412kV to 395kV

10:33 South Bus – I isolation completed (Breaker operations) and voltage become ‘Zero’ South Bus – 2 voltage observed was 415kV East Bus voltage remain around 395kV

10:53 AC by-pass isolator at HVDC Vizag closed after ensuring opening of all the isolators of both the pole – 1 & 2 of HVDC

10:54 South Bus – I charged with ER supply from East bus East bus / South Bus – I voltage observed was 397kV

10:56 Gajuwakha – Simhadri – I charged from Gajuwakha end extending ER power to NTPC Simhadri. Open end voltage observed at Simhadri was 386kV

10:56 The L/R of Jeypore – Gajuwakha line # 2 (converted as B/R) was taken out for improving the voltage profile. The voltage increased from 390kV to 402kV

10:59 After checking voltage & sequence, Simhadri Bus # 4 energised with ER supply through synchronization of Gajuwakha – Simhadri 400kV line # 1

11:05 As the voltage at Simhadri bus # 4 was varying around 400kV and putting of high inductive pump load may decrease the voltage significantly, NTPC simhadri requested for increasing the voltage around 410kV.

11:06 Filter bank of 110MVAR and Bus Reactor of 80MVAR taken in to service at HVDC Vizag. This has given a net effect of about 30MVAR capacitance to the South Bus – I. The voltage variation during this operation are 402kV � 429kV � 410kV. Subsequently the voltage stabilized around 408kV

11:08 NTPC Simhadri has taken the station transformer # 1 in to service with Bus Section # 4

11:11 NTPC Simhadri connected the Pump load and started to draw about 5MW 11:21 The drawal of NTPC Simhadri increased in steps to 9MW – 10MW. During this

time momentarily the drawal has touched 12MW whle starting-up the pump. 11:30 Instruction given to NTPC Simhadri for withdrawing the loads in steps 11:30 SRLDC was requested code for normalizing the Black Start Mock Exercise. 11:33 Drawal of NTPC Simhadri reduced to 5MW level 11:36 Drawal of NTPC Simhadri became ‘Zero’ 11:40 Code for Normalisation of Mock Exercise Received

SRLDC Code: 92, ERLDC Code: 112 & NLDC Code: 30 11:41 Gajuwakha – Simhadri line # 1 was Hand tripped from Simhadri end 11:42 South Bus – I Circuit Breaker Opened 11:45 AC By-pass isolator opened after opening the connecting breakers of Pole – 1

& 2 12:06 All isolators closed at HVDC vizag. South Bus – I was taken in to SR grid.

Voltage of South Bus – I was observed as 415kV & East bus was 395kV 12:09 Pole – 1 taken on Standby mode 12:12 Gajuwakha – Simhadri 400kV line – 1 charged from Gajuwakha end &

synchronized at NTPC Simhadri 12:14 HVDC Pole – I de-blocked with a power flow of 200MW ER � SR 12:15 HVDC Pole – 2 de-blocked 12:17 Instruction Given to Jeypore for charging the Jeypore – Gajuwaka line # 2

203 of 206.


12:20 SRLDC code received for increasing power flow from 200MW � 400MW 12:22 ER � SR power flow made to 400MW 12:28 Jeypore – Gajuwkha 400kV line # 2 charged from Jeypore end and

synchronized at Gajuwakha end 12:30 Declared completion of Black Start Mock Exercise successfully

8. Observations on effectiveness of Mock Drill :

a. As the Mock Exercise conducted using Gajuwakha – Simhadri direct line, the duration of Mock exercise has reduced from 3hours to 2hours 30 minutes.

b. Within 26minutes (10:27hrs to 10:53hrs), South Bus – I got isolated and AC by-pass at HVDC Vizag closed availing ER supply.

c. While Voltage profile of east bus remains around 400kV & below with HVDC flow of about 400MW – 600MW and about 1000MW hydro generation near Jeypore, there were no high / low voltage issues during Black Start Mock exercise.

d. Availability of switchable reactors & filter banks at HVDC Vizag, gives a very good flexibility in voltage management during Black Start Mock exercise

e. Preparation & co-ordination by the Black Start Mock Exercise team of NTPC Simhadri and HVDC Vizag is appreciable.

9. Recommendations / Suggestions on the observations (Sl.No.8) :

Nil

Mock drill for Black start at RSTPS

The Mock drill will be done by issuing total of 4 No of codes Mock Exercise as

detailed below:

o Code No 1: Issued by SRLDC for commencement of Mock drill and

corresponding codes will be collected from WRLDC & NLDC. The

activities to be carried out for this code are

a. HVDC bhadravathi will reduce the power flow in steps of 100

MW. When the flow becomes around 300MW, one of the B’wati

– Rgdm line will be hand tripped. When the flow become ‘Zero’,

other line will also be tripped. HVDC B’wati will do all the

operations as per the list for blocking of both the poles, tripping

of filters, closing of by-pass and energise one bus at Southern side

of HVDC.

b. NTPC, Ramagundam will trip both the B’wati – Ramagundam

lines in co-ordination with HVDC B’wati. Isolate Bus section – 1,

transferring the 33 kV loads & be ready and 400 kV Rgm Bus 1 will

be made clear

c. AP will be ready by transferring all the loads on one bus keeping

the other bus isolated and the bus coupler in open condition.

204 of 206.


o Code No 2: Issued by SRLDC for extension of Start-up power from WR

to SR and corresponding codes will be collected from WRLDC. The


a. HVDC bhadrawathi will charge Ramagundam – Chpr#1 and

convert the line reactor of ckt # 2 in to bus reactor at B’wati

south bus.

b. NTPC, Ramagundam will close the ckt #1 and charge bus #1 at

RGDM. Extend supply to AT#2 and extend supply to APTRANSCO

132kv Sub-station isolated bus.

c. APTRANSCO charge the isolated bus and transfer the identified

feeder of about 40MW load to the other bus which has been

charged from WR grid.

d. NTPC Ramagundam will extend the supply to raw water feed

pump through 33kv Transformer.

o Code No 3: Issued by SRLDC for termination of Start-up power from WR

to SR and corresponding codes will be collected from WRLDC. The


a. NTPC Ramagundam disconnect the raw Water pumps and

isolate the 33kV bus that was feeding from WR

b. NTPC Ramagundam trip the Rgdm – C’pur line # 1and isolate

bus section – 1 at NTPC

c. APTRANSCO disconnect the identified feeder and isolate the

132kv bus that was connected to WR

d. HVDC Bhadrawati open the Rgdm – C’pur line # 1and AC by-

pass at B’wati

o Code No 4 Issued by SRLDC for closure of Mock exercise and restore

normal mode of operation and corresponding codes will be collected

from WRLDC & NLDC. The activities to be carried out for this code are

Closing of Mock exercises

a. HVDC Bhadrawati normalise Converter Transformer Breakers,

filters required for de-blocking one of the HVDC poles.

b. HVDC Bhadrawati charge the South bus through HVDC poles

c. NTPC Ramagundam normalise Bus Section – 1 and Auto

Transformers.

d. APTRANSCO restore the 132kV sub-station with all feeders

connected to both the buses as per normal configuration.

205 of 206.


e. HVDC Bhadrawati charge B’wati – Rgdm Line #1

f. NTPC Ramagundam Synchronise the B’wati – Rgdm Line #1

g. Power flow from WR to SR commenced by de-blocking the

HVDC and increase in steps of 100MW till 400MW level

h. HVDC Bhadrawati insert the line reactor for B’wati – Rgdm Line

#2

i. HVDC Bhadrawati charge B’wati – Rgdm Line #2

j. NTPC Ramagundam Synchronise the B’wati – Rgdm Line #2

k. NTPC Ramagundam maximise MVAR obsorbtion for maintaining

the voltage at Ramagundam end.

l. Power flow from WR to SR through HVDC increased in steps of

100MW till the Scheduled value

o Mock Exercise is declared as completed.

o All the stations will record the details of code, time of code received,

sequence of each operation carried out by the respective station with

time, voltage, frequency and power flow (MW, MVAR) details of each

activity during the Mock Exercise. All these details along with the copies

of Event Logger and DR printout needs to be submitted to SRLDC

immediately after completion of Mock exercise for consolidation &

analysis for further improvement and sharing of experience to all.

206 of 206.

पावर पावर पावर पावर िस टिस टिस टिस टम म म म ऑपऑपऑपऑपरेशन कारपोरेशन िलिमटेडरेशन कारपोरेशन िलिमटेडरेशन कारपोरेशन िलिमटेडरेशन कारपोरेशन िलिमटेड ((((पावर ि ड कारपोरेशन ऑफ इं िडया िलिमटेड पावर ि ड कारपोरेशन ऑफ इं िडया िलिमटेड पावर ि ड कारपोरेशन ऑफ इं िडया िलिमटेड पावर ि ड कारपोरेशन ऑफ इं िडया िलिमटेड क क क क पूण वािम व पूण वािम व पूण वािम व पूण वािम व ाााा सहायक कं पनीसहायक कं पनीसहायक कं पनीसहायक कं पनी, एक भारत सरकार का उ मएक भारत सरकार का उ मएक भारत सरकार का उ मएक भारत सरकार का उ म))))

POWER SYSTEM OPERATION CORPORATION LIMITED (A wholly owned subsidiary of Power Grid Corporation of India Limited, A Govt. of India Enterprise)

दि ण े ीय लोड िड पेच के / SOUTHERN REGIONAL LOAD DESPATCH CENTRE

29, रेस कोस ास रोड, ब गलूर – 560 009. / 29, RACE COURSE CROSS ROAD, BANGALORE – 560 009.

Phone – 080 22254525, Fax – 080 2259219, E Mail - [email protected], Website – www.srldc.org,

black start of sr 2014

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