1 Scope 1
2 References 2
3 Terms and Symbols 4
3.1 Terms 4
3.2 Abbreviations and Symbols 12
4 General Provisions 13
5 Control Mode 14
6 Arrangement of Control Rooms and Panels(Consoles) 18
6.1 General Requirements 18
6.2 Arrangement of Central Control Rooms and Network Control Rooms 19
6.3 Arrangement of Unit Control Rooms 21
6.4 Surface Arrangement of Control Panels(Consoles)and Relay Panels 21
7 Basic Requirements for Secondary Circuit Design 25
7.1 Conventional Control Systems 25
7.2 Conventional Signaling System 27
7.3 Conventional Measuring System 30
7.4 AC Current Transformer and Voltage Transformer Circuits 31
7.5 Computer-based Supervision of Electrical Systems of Power Plants 36
7.6 Computer-based Supervision of Substations and Switchyard of Power Plants 40
8 Wiring of Installation Units Controlled by the Control Room 43
8.1 Generators 43
8.2 Transformers and Shunt Reactors 45
8.3 Transmission Lines 46
8.4 Capacitor Compensation Device 48
8.5 Busbar Devices 48
8.6 Auxiliary Power Supplies 50
8.7 Fault Recorders 52
9 Selection and Configuration of Secondary Circuit Equipment 53
9.1 Selection of Control and Signaling Equipment 53
9.2 Protection Equipment of Secondary Circuits 55
9.3 Mini-Busbar and Secondary Circuit Label 60
9.4 Terminal Blocks 61
9.5 Control Cables 64
10 Excitation System 69
10.1 General Requirements 69
10.2 Excitation System with DC Exciters 73
10.3 Excitation System with AC Exciters 76
10.4 Static Excitation Systems 80
10.5 Standby Excitation System 82
11 Synchronizing System 85
12 AC Uninterrupted Power Supply(UpS)Systems 88
12.1 System Configuration 88
12.2 Arrangement of Equipment 89
13 Grounding and Anti-interference Measures 91
13.1 Grounding of Conventional Secondary Circuits and Equipment 91
13.2 Logical Ground of Electronic Devices 92
13.3 Grounding of Computer Systems 94
13.4 Other Anti-interference Measures 96
Appendix A(Normative) Explanation of Wording in this Code 98
Appendix B(Normative) Distance Between Panels and Width of Walkways in Control Rooms 100
Appendix C(Normative) Colors of Mimic Busbars on Control Panels(Consoles) 101
Appendix D(Normative) I/O List of Generator-Transformer Units 102
Appendix E(Normative) I/O List of Network Section of Power Plants and Substations 106
Appendix F(Normative) Colors of Mini-busbars 112
Appendix G(Normative) Mini-busbar Symbols and Circuit Labels 113
Appendix H(Normative) Numerical Symbols for Secondary DC Circuits 118
Appendix I(Normative) Numerical Symbols for Secondary AC Circuits 121
Appendix J(Informative) Performance of AVR and Excitation Systems under Control of AVR 125