GB/T 35791-2017 in English
VALIDSpecification for single-phase-to-ground fault feeder selection device based on traveling waves for neutral non-effectively grounded system
- Issued on:2017-11-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
| Standard No: | GB/T 35791-2017 |
| Document status: | VALID |
| Title in English: | Specification for single-phase-to-ground fault feeder selection device based on traveling waves for neutral non-effectively grounded system |
| Title in Chinese: | 中性点非有效接地系统单相接地故障行波选线装置技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-11-29 |
| Implemented on: | 2018-07-01 |
| ICS Classification: | 29.240.01-Power transmission and distribution networks in general |
| Chinese Classification: | K45-Relay protection and automatic device |
| Professional Classification: | GB-National Standard |
| Related Keywords: | line selection device
single-phase-to-ground fault feeder selection device line selection accuracy device communication interface complete line selection tasks |
| Related Topics: | GB 35791
gb+35791 gb/t35791 Grounding Technology and Grounding Device GBT35791 GB/T 35791-2017 Grounding device, grounding system Fault removal device technology Motor ground wire standard requirements |
《GB/T 35791-2017中性点非有效接地系统单相接地故障行波选线装置技术要求》由TC154（全国量度继电器和保护设备标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
GB/T 35791—2017 Standard Overview
This standard specifies the technical requirements, test methods, inspection rules and application specifications for the single-phase ground fault traveling wave line selection device in the neutral point non-effectively grounded system. It is applicable to the distribution system with a voltage level of $66~\mathrm{kV}$ and below.
Environmental conditions and electrical parameters
| Category | Specific requirements |
|---|---|
| Ambient temperature | -10°C to +55°C (normal operation), -25°C to +70°C (storage) |
| Relative humidity | 5% to 95% (no condensation or icing) |
| Rated voltage | 220V and 110V, allowable deviation ±15% |
Main functions and technical performance of the device
Traveling wave line selection device must have the following core functions:
- Quickly identify faulty lines or busbars
- Independently complete line selection tasks, support all neutral point non-effective grounding methods
- Monitor permanent and instantaneous ground faults
- Recording function: record fault traveling waves and generate COMTRADE format files
- Communication interface: support Modbus, CDT, DL/T 667 and DL/T 860 protocols
Technical performance comparison
| Indicators | Requirements |
|---|---|
| Voltage measurement range | 0.01 to 1.1 times rated voltage, relative error ≤ ±2.5% |
| Traveling wave operating current | Peak value ≥ 0.3A (5ACT) or ≥ 0.06A (1ACT) |
| Anti-transition resistance capability | Not less than 1000Ω |
Implementation suggestions
In actual applications, it is recommended to:
- Select an appropriate number of monitoring loops according to the scale of the distribution system (up to 24 loops are supported)
- Ensure the compatibility of the device communication interface with the existing system
- Regularly check the insulation performance and electromagnetic compatibility indicators to avoid external interference affecting the line selection accuracy
- In special environments (such as high temperature or high humidity), strengthen the verification of vibration and impact tests
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 37755-2019 in English
Technical specifications for modeling and coding fiber loop in smart substation
2019-06-04 -
GB/T 22390.6-2026 in English
Control and protection equipment of high-voltage direct current (HVDC) transmission system—Part 6: Converter station transient fault oscillograph device
2026-01-28 -
GB/T 33982-2017 in English
Technical specification for grid connection protection of distributed resources
2017-07-12 -
GB/T 25843-2017 in English
Technical requirements of control and protection equipment of ±800 kV ultra high voltage direct current transmission
2017-12-29
