A PRESENTATIONon

SUMMER PRACTICAL TRAININGat

220 KV GRID SUB STATION KOTPUTLI JAIPUR

Submitted to:-Dr. Nitin GuptaDr. Satyanarayana Neeli Dept. of Electrical Engineering

Submitted by:-Sunil Kumar YadavID- 2013UEE1176Batch- E1

Malaviya National Institute of Technology, Jaipur

INTRODUCTIONIn India Electrical power is Generated at a voltage of 11kv to 33kv ,which is taken stepped up to the transmission level in the range of 66kv to 765kv.

Substation is an assembly of apparatus ,which transform one voltage level to another level. hence a substation is an Intermediate link between the Generating station and consumer.

220KV GRID SUBSTATION KOTPUTLIOperates under RAJASTHAN RAJYA VIDYUT

PRASARAN NIGAM LIMITED (Department Of Energy, Government Of Rajasthan)220kv GSS is a conventional, hybrid

substation.It is part of transmission system.For communication purpose PLCC(Power

Line Carrier Communication) is used.Voltage is Transformed High(220/132) to

Low(132/33) using Transformer.

220KV GRID SUBSTATION KOTPUTLIIt is divided into two sections:-

A. Panel Section Control Panel Section Relay and Protection Panel Section

B. Switch Yard 220kV Section 132kV Section

Fig.1 – 220 KV GSS ,KOTPUTLI JAIPUR

Substations have switching, protection and control equipment and one

or more transformers. In a large substation, circuit breaker are used to

interrupt any short-circuits or overload currents that may occur on the

network

CONTENTS:- SINGLE LINE DIAGRAM LIGHTNING ARRESTOR. INSULATER. POWER TRANSFORMER. CURRENT TRANSFOMER. CIRCUIT BREAKER. BUSBARS. PROTECTIVE RELAY. CONTROL PANEL. POTENTIAL TRANSFORMER WAVE TRAP. CONCLUSION

INCOMING FEEDER: 220KV ALWAR

OUTGOING FEEDER: 132KV BEHROR 132KV NEEM KA THANA 132KV BANSUR 132KV SHAHPURA

OUTGOING FEEDER:33KV FEEDER: PAOTA PANIYALA PANASIEA PATTAN CHALLA KOTPUTLI BEHROR II S. CEMENT PUTLI

LIGHTNING ARRESTORLightning arrestor provide protection to all the

equipment against the HV.an electric discharge between cloud and earth , known as lightning.

It is provide to safety transmission & distribution line.

INSULATER An electrical

insulator is a material whose internal electric charge do not flow freely and therefor make it very hard to conduct an electric current under the influence of an electric field.

POWER TRANSFORMER•For stepping down the system voltage, power transformers are used in the substations. • Ratings-

220/132 kV, 100 MVA 132/33 kV, 20-25 MVA

• Cooling• Silica gel breather• Relays• Tap changer

CURRENT TRANSFORMERThe current

transformer are used to stepped down primary current.

It is used to measurement/control/protection.

CIRCUIT BREAKER Circuit breaker are used

for switching and protection.

Brake a circuit automatically under fault condition.

A circuit breaker consist of fixed and moving contact called electrode under normal condition.

ISOLATORS• Used for completely DE-ENERGISE the electrical circuit for SERVICE or

MAINTENANCE.

• Separate the circuit at NO LOAD CONDITION.

BUSBARSBus bars are common

electrical component through which a large no. of feeders operating at some voltage have to connected.

It is used to connect to transmission line which go to electricity.

It is used to high material, hollow pipe conductor.

PROTECTIVE REALAYA Protective relay is a device which

detect the fault.It is to detect after their go to

command circuit breakerIt is provide to safety in electrical

equipments.

CAPACITIVE VOLTAGE TRANSFORMER

Step down extra high voltage signals.Provide a low voltage signal.for MEASUREMENT and COMMUNICATION

to operate a protective relay.

POTENTIAL TRANSFORMERThe potential transformer is used to step

down voltage for measurement purpose.Rating- 132kV/(110/√3) V

WAVE TRAP (PLCC)POWER LINE CARRIER COMMUNICATION

Exchange of data and transfer of messages between substations.

WAVE TRAP - TRAPPING the unwanted waves.

CONTROL PANEL

CONTROL PANELIt contains Meters, Relays, Recorder and

Control Switches.All measurement and control signal come to

control panel from yard for operation.

CONCLUSIONAn Engineer need to have not just theoretical but practical as well as and so every student is supposed to undergo a practical training .session after 3rd year where I have impaired the knowledge about transmission ,distribution .during the 45 days training session. we have acquainted with the repairing of a transformer and testing of transformer. At last is would like to say that practical training taken at 220kv GSS Kotputli has broadened my knowledge and widened my thinking as a professional.

THANK YOU !!!ANY QUERY?