GB/T 40096.6-2024 in English
VALIDTechnical specification for on-site relay protection equipment—Part 6: Busbar protection
- Issued on:2024-04-25
- Implemented on:2024-11-01
- File Format:PDF
- Delivery:Via email within 8 business days
$670.00
| Standard No: | GB/T 40096.6-2024 |
| Document status: | VALID |
| Title in English: | Technical specification for on-site relay protection equipment—Part 6: Busbar protection |
| Title in Chinese: | 就地化继电保护装置技术规范 第6部分：母线保护 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 8 business days |
| Issued on: | 2024-04-25 |
| Implemented on: | 2024-11-01 |
| Professional Classification: | GB-National Standard |
| Related Topics: | Relay protection device
On-source maintenance relay protection Bus Differential Protection Technology Standardized design of relay protection Protection Regulations for Relay Protection |
《GB/T 40096.6-2024就地化继电保护装置技术规范 第6部分：母线保护》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
Innovation of Standard Core Technologies
| Technical Dimensions | Traditional Protection Devices | Local Busbar Protection Devices |
|---|---|---|
| Environmental Adaptability | -25℃~+55℃ | -40℃~+70℃ (Expanded by 125%) |
| Communication Architecture | Star Topology | Bidirectional Redundant Dual Ring Network (N-1 Reliability) |
| Action Speed | 30-40ms | ＜20ms (Increased by 50%) |
Analysis of key technical requirements
1. Environmental adaptability design
The device must meet the following harsh conditions: 96 hours of salt spray corrosion, 8.96kW·h/m² of solar radiation, and a protection level of IP66. The specially designed dedicated electrical connector ensures reliable contact at low temperatures of -40°C.
2. Ring network communication mechanism
Adopts dual A/D sampling data independent transmission, supports:
- Protection ring and Start ring dual network redundancy
- Communication delay between slaves ≤1ms
- Optical fiber interface parameters: 1310nm wavelength, transmission power -20~-14dBm
Typical application case
A 220kV substation adopts the local bus protection slave configuration scheme:
- Dual bus and dual segment wiring configures 4 slaves
- Each slave is connected to 8 bays (including PT bays)
- Full protection coverage of 28 branches is achieved through the ring network communication specified in Appendix C
Implementation Suggestions
| Links | Precautions |
|---|---|
| Installation and debugging | Requires the use of prefabricated optical cable (62.5/125μm multimode optical fiber) |
| Operation and maintenance management | After the fixed value is modified, the protection lockout time is ≤500ms |
| Anti-interference | Pass the 15 EMC tests specified in Table 3 |
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