nes5100 excitation

Introduction of NARI Excitation Introduction of NARI Excitation System System

Sample of FWL/B series 300MW self-shunt Sample of FWL/B series 300MW self-shunt excitation systemexcitation system

Steam Steam TurbineTurbine

Hydro GeneratorHydro Generator

Gas-turbine Gas-turbine GeneratorGenerator

ApplicationsApplications

■ ■ History of NARI Digital AVRHistory of NARI Digital AVR

•In 1979, a Digital AVR team was set up in NARI.

•1984, Micro-computer based AVR was developed in NARI, which is the first in the world.

•April 27th.1985, the first Digital AVR was put into commercial operation at 50Mw #2 unit in Chitan #2 Generator Hydropower Station. It means Generator Excitation in China had changed from analog into digital era, which was leading in the world at that time.

•Before 1998 ,the main AVR used is Analog type. From 1998 till now, D-AVR for hydro-.steam- generators are widely used in most Chinese power stations.

HistoryHistory

AchievementsAchievements

三峡三峡12X70万千瓦

湛江奥里油2X60万千瓦

鹤岗1X60万千瓦

沁北2X60万千瓦

绥中2X80万千瓦

扬州2X66万千瓦

和信武乡2X60万千瓦

伊敏2X60万千瓦

鲤鱼江2X60万千瓦

巢湖2X60万千瓦

上安2X60万千瓦

营口2X60万千瓦

黔东2X60万千瓦

大板2X60万千瓦

铜川2X60万千瓦

霍林河2X60万千瓦

七台河2X60万千瓦

Total :

1700 sets

Capacity above 600MW,over 120 sets

Capacity above 300MW,over 280 sets

Capacity of 1000MW, 12 sets

No. User’s name Excitation Type Qty Capacity （ MW）

1Three Gorges Right bank static 12 700

2Three Gorges Underground static 4 700

3Xiaowan Hydropower Station static 6 700

4 Xiluodu Hydro power static 9 700

Reference in HydropowerReference in Hydropower

In hydro power station ,we have following achievements Which are our most representative projects.

No User’s nameExcitation Type Qty

Capacity （ MW）

5 Nuozhadu Hydro power static 8 650

6Guandi Hydro Power Station static 4 600

7 Liyuan static 4 600

8 Pengshuistatic

5 350

Reference in HydropowerReference in Hydropower

Reference in Large Capacity Steam TurbineReference in Large Capacity Steam Turbine

No User’s name Excitation Type Qty Capacity(MW）

1 Suizhong 2nd phase Static 2 1000

2 Qinbei P. P. Static 2 1000

3 Xuzhou P. P. Static 2 1000

4 Suizhong 1st phase PMG 2 800

5 Yangzhou No.2 Static 2 660

6 Atalas(Turkey) Static 2 660

For thermal power plant ,we also have achievements , which are world-leading in capacity.

Panjiakou 2 × 90MWXiangshuijian 4 × 250MWXianyou 4 × 300MW Liyang 6 × 250MW

Reference in Pump-storage stationReference in Pump-storage station

Tianwan Nuclear Power Plant 2*1000MW

Original ： Power Machines, Russia

Reference in Nuclear UnitReference in Nuclear Unit

Excitation System of the Three GorgesExcitation System of the Three Gorges

Excitation System of SuiZhong 2st PhaseExcitation System of SuiZhong 2st Phase

1000MW steam turbine generator

Overseas Reference In 12 countriesOverseas Reference In 12 countries

No End user Type Qty Capacity Country

1 Atalas Static 2 660 Turkey

2 Muyin Static 2 150 Indonesia

3 JHARSUGUDA Static 9 135 India

4 MPPL Static 1 135 India

5 SEC Brushless 10 150 Saudi

6 Xiefu Static 3 125 Vietnam

7 Dishlin Static 1 105 Syria

8 Dakemin 4A Hydro Static 3 70 Vietnam

9 Tienpian Hydro Static 4 60 Burma

Saudi Arabia IndonesiaIndonesiaSyriaSyria

AlgeriaAlgeria

MyanmarMyanmar

Turkey

Vietnam

Peru

Chile

Overseas ReferenceOverseas Reference

India

Original Manufacturer

Name of Plant

TypeCap.

(MW)QTY. Date

GE DeZhou Self-shunt 600 1 2007

GE Shang An Self-shunt 350 2 99/02

WestinghouseYangzhou

No.2 Self-shunt 660 2 99/02

Rolls-Royce ShaoGuan Self-shunt 300 2 04/05

Rolls-Royce XinHai PMG 200 1 05

Reference of Rehabilitation and Reference of Rehabilitation and ModificationModification

Original Manufacturer

Name of Plant

TypeCap.

(MW)QTY. Date

ALSTOM Sha Jiao Brushless 660 1 2006

ALSTOM Luo Huang Brushless 360 4 02/04

ALSTOM Dan Dong Brushless 350 2 04/06

Hitachi Dou He PMG 250 2 2003

Mitsuibish Fu Zhou Brushless 350 2 04/06

ABB Yao Meng Brushless 300 1 2003

Reference of Rehabilitation and Reference of Rehabilitation and ModificationModification

signal

Rectifier 1

Rectifier nRectifier 2

De-excitationField breaker

AVR:Channel A

AVR:Chanel B

AI

DI/DO

CPU

powersyn

Pulse

power

G

PT

T

CT

PT

CT

Principle Diagram Principle Diagram

AVR Rectifier De-excitation

Main ComponentsMain Components

4-Channel

Independent

Regulator

Bumpless Channel

Switch

Protection Grade

IP54

EMC Lever 4

NES-5100 Digital AVRNES-5100 Digital AVRNES-5100 Digital AVRNES-5100 Digital AVR

A/D Sample ： 16 bit +-2/2^16 Resolution of Control angle ： 0.0144° Control Cycle ： 3.3ms Response time ： rise ＜ 0.08s ， fall ＜ 0.15s Waveform Recording for fault diagnosis and testing：

Period: 20s

Step: 3.3ms

Channels: analog 15, digital 80

Key Technical Indicators


NES-5100 STRUCTURENES-5100 STRUCTURE NES-5100 STRUCTURENES-5100 STRUCTURE

Metal Shielding Cabinet

Plug-in Component

Heat-sincs without fan

EX01

PULSE POWER

SYSTEM POWER

ANALOG SIGNAL

SYNCHRONIC SIGNAL

EXT. DIGITAL I/O

PULSE AMPLIFY

EX08EX07EX06EX05EX04EX03EX02

CPU

DIGITAL I/O


SMT 6-layers PCB

Aluminum Alloy Seat

All-Metal Plug-in component,Dustproof,All-Metal Plug-in component,Dustproof,Heat-dissipation,Anti-interferenceHeat-dissipation,Anti-interference

All-Metal Plug-in component,Dustproof,All-Metal Plug-in component,Dustproof,Heat-dissipation,Anti-interferenceHeat-dissipation,Anti-interference

• Top Top ViewView

• Front Front ViewView

• Back Back ViewView


Automatic Channel CPU Manual Channel CPU

Channel 24, 16-bit, A/D Converter

FPGA

Core Chips of NES-5100Core Chips of NES-5100


Communication DiagramCommunication Diagram Communication DiagramCommunication Diagram

Hard-wiring

RS232/485

Ethernet

CAN

Profi-Bus

Modbus


Supporting Remote Diagnosis

Supporting OPC Technology

Standard and Open Interface

Data Variables Intelligent Extension

Logical Variables Configuration

Design

IEC61970-103-based

Communication

Multi-channel Sampling function

Oscillograph

HMI FeaturesHMI FeaturesHMI FeaturesHMI Features


HMI Graphic DisplayHMI Graphic DisplayHMI Graphic DisplayHMI Graphic Display

Configurable

Interface

Abundant Control

Friendly Human-

Machine Interface


AVR Main InterfaceAVR Main InterfaceAVR Main InterfaceAVR Main Interface

Data Display

Parameter

setting

Detection and

Alarming


Failure LogsFailure Logs Failure LogsFailure Logs

Inquiry

Function

Offered

Stored

Record>1000


Visualized Reference

CurvesVisualized running

Condition 5-point Fitting

Curves Setting

Over/under Excitation Curves SettingOver/under Excitation Curves Setting Over/under Excitation Curves SettingOver/under Excitation Curves Setting


Curves RecordCurves Record Curves RecordCurves Record


Control ModeControl Mode Control ModeControl Mode

Fixed angle

Current loop

PF loop

Reactive Power

loop

Voltage loop


Excitation LimiterExcitation Limiter Excitation LimiterExcitation Limiter Under Excitation

Limiter (UEL)

Over Excitation

Limiter (OEL)

V/Hz Limiter

Forced excitation

reverse-time

Limiter


Remote On-line SamplingRemote On-line Sampling Remote On-line SamplingRemote On-line Sampling

24 High-speed

Sampling Channels

Real-time

Waveform Display

Graphic Analysis

Function


On-line Waveform AnalysisOn-line Waveform Analysis On-line Waveform AnalysisOn-line Waveform Analysis

Various Variables

cyclic recording

Automatic Analysis

Function Offered

Data Automatic

Recording


Level 4 Class A

Standard

Electrostatic

Discharge

Electrical fast

transient/burst

immunity

Pulse Magnetic

Field Immunity

Surge Immunity

Power Frequency Magnetic Field

Immunity

1MHz impulse interfere

Immunity to conducted

disturbances

Voltage dips, short interruptions and

voltage variations on d.c. input power port

immunity

Harmonics and

interharmonics,

low frequency

immunity

Radiated, radio-frequency,

electromagnetic

field immunity

Level 3Level 3

• LevelLevel

Level 4Level 4

Lever 5Lever 5

EMC LevelEMC LevelEMC LevelEMC Level

In Accordance In Accordance With IEC 61000 With IEC 61000 Standard SeriesStandard Series


Power System Stabilizer (PSS)Power System Stabilizer (PSS) Power System Stabilizer (PSS)Power System Stabilizer (PSS)

•Power system stabilizer (PSS) module is integrated in NES5100

•The control algorithm of PSS is based on the PSS2B or PSS2A in IEEE Std. 421.5-2005.


∑

∑

1+sT8

[1+sT9][ M]N

Ks3

+

-

+

+

VST

VS11

VS12

W

1+sTw1

sTw1 sTw2

1+sTw2

1

1+sT6

Ks11+sT2

1+sT1

1+sT4

1+sT3

W

1+sTw3

sTw3 sTw4

1+sTw4

Ks2

1+sT7

PSS Model according to IEEE 421.5 and relevant standards

Dual-input PSS


Front view

Double ventilation fans with

Redundant power supply

RC Snubber loop

Advanced large capacity

thyristor

Thyristor RectifierThyristor RectifierThyristor RectifierThyristor Rectifier

Back view

Isolating Switch in AC and DC side

Dust proof filter


Thyristor module

RC circuit module

Cooling fan module

Disconnect Switch

On-line MaintenanceOn-line Maintenance


Developed a thyristor simulation model ， the error of overvoltage between simulation and measured is less than 5%

The model can be a good guide of thyristor protection circuit design

Measured overvoltage wave

Simulated overvoltage wave

Thyristor Protection


Combined De-excitation

Mix De-excitation

Redundant Crowbar

De-excitation Sequence Optimization

Reliable& Fast

Generator Rectifier

Resistor

FieldBreaker

GeneratorBreaker

Key Technology

De-excitationDe-excitationDe-excitationDe-excitation

Field Circuit Breaker


ZnO SiC Linear resistor

Nonlinear resistor

Discharging Resistor


THE ENDThank you!

nes5100 excitation

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