GB/T 32901-2016 in English
VALIDGeneral specifications for relay protection of intelligent substation
- Issued on:2016-08-29
- Implemented on:2017-03-01
- File Format:PDF
- Delivery:Via email within 5 business days
$359.00
《GB/T 32901-2016智能变电站继电保护通用技术条件》由524（中国电力企业联合会）归口，主管部门为中国电力企业联合会。
Introduction
Analysis of the core content of the standard
| Technical dimension | Traditional protection | Intelligent station protection | Difference analysis |
|---|---|---|---|
| Sampling method | Direct analog input | Merging unitDigital sampling | Need to compensate for 2ms sampling delay |
| Communication protocol | Hard wiring | DL/T 860(GOOSE/SV) | Virtual terminals replace physical terminals |
| Synchronization requirements | ±1ms | ±1μs (merging unit) | IRIG-B code synchronization is required |
Key technical requirements
Typical application case
In a 750kV smart substation, the line protection device receives the SV data of the merging unit through the dual AD sampling system. When it detects that the difference between the dual AD data is greater than 2.5%, the differential protection is automatically locked and the "sampling abnormality" alarm signal is triggered.
Core indicators
- Network pressure tolerance: no false operation under 100M non-subscription messages
- Intelligent terminal action time: ≤7ms (including relays)
- Sampling discreteness: <10μs
- Fiber optic interface: 1310nm wavelength transmission power -20~-14dBm
Implementation suggestions
- Configuration principles: Dual protection should be configured independently in the process layer network
- Debugging points: Network stress test (Appendix A) and communication interruption test are required
- Operation and maintenance management: Regularly check the 5P level accuracy of electronic transformers
Technology evolution
This standard specifies for the first time the requirements for virtual terminal mapping, maintenance mechanism, and network adaptability of intelligent station protection devices, promoting the transformation of relay protection from hardware-dependent to software-defined. The 2020 revision adds test requirements for 5G communication interfaces.
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