Bộ kích từ GEX-2000 Generator Excitation Regulator - Technical documentation (Beijing KeDianYiHeng)
12 thg 8, 2024 | 09:00

Bộ kích từ GEX-2000 Generator Excitation Regulator - Technical documentation (Beijing KeDianYiHeng)



1　 Introduction
As a product of GEX series of Beijing KeDianYiHeng Electric Power Technology Co., Ltd., GEX2000C/D micro-computer excitation unit is applied in synchronous generators excitation system. It is designed with single cabinet, featured with compact structure, easy installation and perfect function, applies to hydro-power generating units and thermal power generating units. The general cabinet size is 800(width)×600(depth)×2260(height).

2　 Function Description
GEX-2000C/D excitation unit is comprised of major loop unit, regulator control unit, power unit and operating and signal indicating unit.




CONTENTS:



1 　 INTRODUCTION............................................................................................................ 1
2 　 FUNCTION DESCRIPTION........................................................................................... 1
2.1 　 MAJOR LOOP
2.2 SYSTEM CONFIGURATION

2

2.3 RECTIFIER BRIDGE

2

2.4 DE-EXCITATION AND OVER-VOLTAGE CIRCUIT
2.4.1 Calculation and choice of de-excitation resistance........................................................................

2.4.2 Rotor over-voltage protection......................................................................................................... 6

2.5 FIELD FLASHING CIRCUIT

6

2.6 　 REGULATOR CONTROL UNIT
6
2.6.1　 Collection of analog quantities.................................................................................................... 6
2.6.2　 Switching value input and output................................................................................................ 7
2.6.3　 Communication.........................................................................................................................

2.6.4　 Human-computer interface.........................................................................................................

8

2.6.4.1 　 Keyboard......................................................................................................................................
2.6.4.2 　 LED indicator light................................................................................................................................ 9
2.6.4.3 　 Home screen display............................................................................................................................

2.6.4.4 　 Instructions of menu operation.............................................................................................................. 10
2.6.4.5 　 Display measurement............................................................................................................................ 11
2.6.4.6 　 Parameters menu..................................................................................................................................... 12
2.6.4.7 　 Protect switching menu.......................................................................................................................

2.6.4.8 　 Input status menu................................................................................................................................

15

2.6.4.9 　 Transmission test menu.......................................................................................................................

16

2.6.4.10 　 System test menu................................................................................................................................

17

2.6.4.11 　 Fault remember menu............................................................................................................................ 17
2.6.4.12 　 Fault wave form menu............................................................................................................................ 18
2.6.4.13 　 Event recording menu............................................................................................................................ 19
2.6.4.14 　 Precision adjustment menu................................................................................................................... 19
2.6.4.15 　 Unit parameter menu............................................................................................................................ 19
2.6.4.16 　 System setup menu................................................................................................................................ 20
2.6.4.17 　 Test option menu..................................................................................................................................... 21
2.6.4.18 　 Other test menu..................................................................................................................................... 22

2.7 　 POWER SUPPLY

3 　 OPERATION................................................................................................................ 23
3.1 　 INTRODUCTION OF OPERATION PANEL
3.2 　 OPERATION METHOD

23
24

3.3 　 INCREASE/DECREASE MAGNET OPERATION
3.4 SOFT START

25

3.5 SYSTEM VOLTAGE TRACKING

26

26

3.4 　 NORMAL OPENING STEPS (LOCAL)

26

2


Generator Excitation System Technology and Operation Manual

3.5 　 NORMAL CLOSING OPERATION






27

3.9 　 FAULT WARNING AND PROCESSING

27

4 　 MAINTENANCE OF EQUIPMENT.........................................................................
4.1 　 DAILY INSPECTION
4.2 　 MAINTENANCE

28
28
28

5 　 UPPER COMPUTER MONITORING......................................................................... 28
5.1 　 INSTALLATION AND STARTUP

29

5.2 　 CONNECTION TYPE
29
5.2.1　 Single channel............................................................................................................................. 29
5.2.2　 Two-channel................................................................................................................................. 29

5.3 　 SYSTEM SETTING

29

5.4 　 FUNCTIONS






30

6 　 CENTRAL CONTROL DESIGN GUIDELINE........................................................... 35
7 　 TECHNICAL DESCRIPTION OF GEX-2000C/D MICROCOMPUTER
EXCITATION REGULATOR.............................................................................................. 36
7.1 　 UNIT FEATURES
36
7.1.1　 Main features............................................................................................................................. 36
7.1.2　 Operation environment................................................................................................................. 37

7.2 　 MAIN FUNCTIONS AND TECHNICAL CRITERIA
37
7.2.1　 Main functions............................................................................................................................. 37
7.2.1.1 　 Adjustment and control function.........................................................................................................

38

7.2.1.2 　 Limit and protection function..............................................................................................................

38

7.2.1.3 　 Other auxiliary functions....................................................................................................................... 38

7.2.2　 Main technical criteria................................................................................................................. 39
7.2.2.1 　 Analog-digit converter input parameter................................................................................................ 39
7.2.2.2 　 Volume of switching value input/output................................................................................................ 40
7.2.2.3 　 Output parameter................................................................................................................................

7.2.2.4 　 Network interface................................................................................................................................

40

7.2.2.5 　 Power supply parameter....................................................................................................................... 40
7.2.2.6 　 Criteria parameter................................................................................................................................

40

7.3 　 PRINCIPAL INTRODUCTION
41
7.3.1　 Main Principal............................................................................................................................. 41
7.3.2　 Single Board Principle................................................................................................................. 42

7.4 SOFTWARE INTRODUCTION
45
7.4.1 Master Scheduler Program............................................................................................................. 45
7.4.2 Interrupt Routine............................................................................................................................. 46

7.5 COMMUNICATION AGREEMENT

50

8 　 PSS TEST METHOD AND STEP..






1　 Introduction
As a product of GEX series of Beijing KeDianYiHeng Electric Power Technology Co., Ltd., GEX2000C/D micro-computer excitation unit is applied in synchronous generators excitation system. It is designed with single cabinet, featured with compact structure, easy installation and perfect function, applies to hydro-power generating units and thermal power generating units. The general cabinet size is 800(width)×600(depth)×2260(height).

2　 Function Description
GEX-2000C/D excitation unit is comprised of major loop unit, regulator control unit, power unit and operating and signal indicating unit.




CONTENTS:



1 　 INTRODUCTION............................................................................................................ 1
2 　 FUNCTION DESCRIPTION........................................................................................... 1
2.1 　 MAJOR LOOP
2.2 SYSTEM CONFIGURATION

2

2.3 RECTIFIER BRIDGE

2

2.4 DE-EXCITATION AND OVER-VOLTAGE CIRCUIT
2.4.1 Calculation and choice of de-excitation resistance........................................................................

2.4.2 Rotor over-voltage protection......................................................................................................... 6

2.5 FIELD FLASHING CIRCUIT

6

2.6 　 REGULATOR CONTROL UNIT
6
2.6.1　 Collection of analog quantities.................................................................................................... 6
2.6.2　 Switching value input and output................................................................................................ 7
2.6.3　 Communication.........................................................................................................................

2.6.4　 Human-computer interface.........................................................................................................

8

2.6.4.1 　 Keyboard......................................................................................................................................
2.6.4.2 　 LED indicator light................................................................................................................................ 9
2.6.4.3 　 Home screen display............................................................................................................................

2.6.4.4 　 Instructions of menu operation.............................................................................................................. 10
2.6.4.5 　 Display measurement............................................................................................................................ 11
2.6.4.6 　 Parameters menu..................................................................................................................................... 12
2.6.4.7 　 Protect switching menu.......................................................................................................................

2.6.4.8 　 Input status menu................................................................................................................................

15

2.6.4.9 　 Transmission test menu.......................................................................................................................

16

2.6.4.10 　 System test menu................................................................................................................................

17

2.6.4.11 　 Fault remember menu............................................................................................................................ 17
2.6.4.12 　 Fault wave form menu............................................................................................................................ 18
2.6.4.13 　 Event recording menu............................................................................................................................ 19
2.6.4.14 　 Precision adjustment menu................................................................................................................... 19
2.6.4.15 　 Unit parameter menu............................................................................................................................ 19
2.6.4.16 　 System setup menu................................................................................................................................ 20
2.6.4.17 　 Test option menu..................................................................................................................................... 21
2.6.4.18 　 Other test menu..................................................................................................................................... 22

2.7 　 POWER SUPPLY

3 　 OPERATION................................................................................................................ 23
3.1 　 INTRODUCTION OF OPERATION PANEL
3.2 　 OPERATION METHOD

23
24

3.3 　 INCREASE/DECREASE MAGNET OPERATION
3.4 SOFT START

25

3.5 SYSTEM VOLTAGE TRACKING

26

26

3.4 　 NORMAL OPENING STEPS (LOCAL)

26

2


Generator Excitation System Technology and Operation Manual

3.5 　 NORMAL CLOSING OPERATION






27

3.9 　 FAULT WARNING AND PROCESSING

27

4 　 MAINTENANCE OF EQUIPMENT.........................................................................
4.1 　 DAILY INSPECTION
4.2 　 MAINTENANCE

28
28
28

5 　 UPPER COMPUTER MONITORING......................................................................... 28
5.1 　 INSTALLATION AND STARTUP

29

5.2 　 CONNECTION TYPE
29
5.2.1　 Single channel............................................................................................................................. 29
5.2.2　 Two-channel................................................................................................................................. 29

5.3 　 SYSTEM SETTING

29

5.4 　 FUNCTIONS






30

6 　 CENTRAL CONTROL DESIGN GUIDELINE........................................................... 35
7 　 TECHNICAL DESCRIPTION OF GEX-2000C/D MICROCOMPUTER
EXCITATION REGULATOR.............................................................................................. 36
7.1 　 UNIT FEATURES
36
7.1.1　 Main features............................................................................................................................. 36
7.1.2　 Operation environment................................................................................................................. 37

7.2 　 MAIN FUNCTIONS AND TECHNICAL CRITERIA
37
7.2.1　 Main functions............................................................................................................................. 37
7.2.1.1 　 Adjustment and control function.........................................................................................................

38

7.2.1.2 　 Limit and protection function..............................................................................................................

38

7.2.1.3 　 Other auxiliary functions....................................................................................................................... 38

7.2.2　 Main technical criteria................................................................................................................. 39
7.2.2.1 　 Analog-digit converter input parameter................................................................................................ 39
7.2.2.2 　 Volume of switching value input/output................................................................................................ 40
7.2.2.3 　 Output parameter................................................................................................................................

7.2.2.4 　 Network interface................................................................................................................................

40

7.2.2.5 　 Power supply parameter....................................................................................................................... 40
7.2.2.6 　 Criteria parameter................................................................................................................................

40

7.3 　 PRINCIPAL INTRODUCTION
41
7.3.1　 Main Principal............................................................................................................................. 41
7.3.2　 Single Board Principle................................................................................................................. 42

7.4 SOFTWARE INTRODUCTION
45
7.4.1 Master Scheduler Program............................................................................................................. 45
7.4.2 Interrupt Routine............................................................................................................................. 46

7.5 COMMUNICATION AGREEMENT

50

8 　 PSS TEST METHOD AND STEP..




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