1. Scope
This Code has stated the fundamental principles on the power system relaying protection and security automatic equipment. These principles shall be executed by related scientific research, design, manufacture, construction and operation departments.
This Code is applicable to the relaying protection in power equipment and circuits and the security automatic equipment that are used in the 3kV-or-higher power system.
2. Normative References
The following normative documents contain provision which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 7409.1-7409.3 Excitation System for Synchronous Electrical Machines (GB/T 7409.1-1997, idt IEC 60034-16-1: 1991, GB/T 7409.2-1997, idt IEC 60034-16-2: 1991, GB/T 7409.3-1997, idt IEC 60034-16-3: 1991)
GB/T 14598.9 Electrical Relays - Part 22-3: Volume Relay and Protective Device Electrical Distribution Test - Electromagnetic Field Distribution Test (GB/T14598.9-2002, IEC 60255-22-3: 2000, idt)
GB/T 14598.10 Electrical Relays - Part 22: Volume Relay and Protective Device Electrical Distribution Test – Section 4: Fast Instant Distribution Test (GB/T14598.10-1996, idt IEC 60255-22-4: 1992)
GB/T 14598.13 Volume Relay and Protective Device Electrical Distribution Test – Part 1: 1MHz Pulses Group Disturbance Test (GB/T14598.13-1998, eqv IEC 60255-22-1: 1988)
GB/T 14598.14 Volume Relay and Protective Device Electrical Distribution Test – Part 2: Static Discharge Test (GB/T14598.14-1998, idt IEC 60255-22-2: 1996)
GB 16847 Requirement for Protective Current Transformers for Transient Performances (GB 16847-1997, idt IEC60044-6: 1992)
DL/T 553 Technical Specification of Dynamic Fault Recording for 220kV-500 kV Power System
DL/T 667 Tele-control Equipment and Systems Part 5: Transmission protocols, Section 103 Companion Standard for the Information Interface of Protection Equipment (idt IEC 60870-5-103)
DL/T 723 Guide on Safe and Stable Control of the Power System
DL 755 Guide on Safe and Stable Control Technology of the Power System
DL/T 866 Guide of Selection and Calculation of Current Transformer and Voltage Transformer
IEC 60044-7 Instrument Transformers - Part 7: Electronic Voltage transformers
IEC 60044-8 Instrument Transformers - Part 8: Electronic Current transformers
IEC 60255-24 Electrical relays – Part 24: Common Format for Transient Data Exchange (COMTRATE) for Power Systems
IEC 60255-26 Measuring relays and protection equipment - part 26: Electromagnetic compatibility requirements for measuring relays and protection equipment.
3. General Provisions
3.1 Functions of the relaying protection and security automatic equipment in the power system aim to ensure the safety operation of the power system and the electric equipment under the reasonable grid structure.
1. Scope
2. Normative References
3. General Provisions
4 Relaying Protection
4.1 General
4.2 Generator Protection
4.3 Power Transformer Protection
4.4 3KV-10KV Circuit Protection
4.5 35kV-66kV Circuit Protection
4.6 110kV-220kV Circuit Protection
4.7 330kV-500kV Circuit Protection
4.8 Busbar Protection
4.9 Breaker Failure Protection
4.10 Remote Tripping Protection
4.11 Electric Condenser Group Protection
4.12 Parallel Reactor Protection
4.13 Asynchronous Motor and Synchromotor Protection
4.14 Direct-current Transmission System Protection
5. Security Automatic Equipment
5.1 General Principles
5.2 Auto Reclosing
5.3 Automatic Switching-in of the Backup Power
5.4 Transient Stable Control and Out-of-step Stepout
5.5 Frequency and Voltage Abnormity Emergency Control
5.6 Auto-excitation Regulation
5.7 Automatic Deexcitation
5.8 Fault Recording and Fault Information Management
6. Requirements on Related Circuits and Equipment
6.1 Secondary Circuits
6.2 Current Transformer and Voltage Transformer
6.3 DC Power Supply
6.4 Coordination and Interphase between the Protection and the Service-station Automatic System
6.5 EMC
6.6 Breaker and Disconnecting Switches
6.7 Relaying Protection and Security Automatic Equipment Channel
Annex A
Minimum Sensitivity Factor of Short-circuit Protection
Annex B
Requirements on Protective Equipment Immunity Test
