通道不对称时延对继电保护可靠性影响的量化分析

高会生; 沈青

doi:10.11959/j.issn.1000−0801.2019016

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通道不对称时延对继电保护可靠性影响的量化分析

研究与开发 | 更新时间：2024-06-05

- 通道不对称时延对继电保护可靠性影响的量化分析
- Quantitative analysis of the influence of asymmetric channel delay on relay protection's reliability
- 电信科学 2019年35卷第1期页码：90-96
- 作者机构：
- 作者简介：
  
  [ "高会生（1963− ），男，博士，华北电力大学电子与通信工程系教授，主要研究方向为通信网监测系统、网络管理和可靠性评估等。" ]
  [ "沈青（1994− ），女，华北电力大学电子与通信工程系硕士生，主要研究方向为电力通信网。" ]
- 基金信息：
  
  国家电网公司科技项目;Science and Technology Funding Project of State Grid Corporation of China(No.xx71-16-004)
- DOI：10.11959/j.issn.1000−0801.2019016
  中图分类号： TM773
- 网络出版日期：2019-01，
  
  纸质出版日期：2019-01-20
- 稿件说明：
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高会生, 沈青. 通道不对称时延对继电保护可靠性影响的量化分析[J]. 电信科学, 2019,35(1):90-96.

Huisheng GAO, Qing SHEN. Quantitative analysis of the influence of asymmetric channel delay on relay protection's reliability[J]. Telecommunications science, 2019, 35(1): 90-96.
高会生, 沈青. 通道不对称时延对继电保护可靠性影响的量化分析[J]. 电信科学, 2019,35(1):90-96. DOI： 10.11959/j.issn.1000−0801.2019016.

Huisheng GAO, Qing SHEN. Quantitative analysis of the influence of asymmetric channel delay on relay protection's reliability[J]. Telecommunications science, 2019, 35(1): 90-96. DOI： 10.11959/j.issn.1000−0801.2019016.

摘要

数字通道的不对称时延对线路电流差动保护具有不利的影响，其影响机理复杂、后果严重，有必要采用有效的方法对其进行分析，以提高继电保护的可靠性。首先，分析了线路电流差动的工作原理和动作判据；然后，针对不对称时延对继电保护可靠性的影响，确定了不同故障条件下的量化分析方法；最后，通过实例验证了该方法的可行性和正确性。研究结果表明，不对称时延对继电保护可靠性的影响与故障条件有显著相关性，这一结论对继电保护可靠性评估和通道优化具有工程参考价值。

Abstract

The asymmetric delay of digital channels has negative effects on line current differential protection in a complex mechanism. Hence

it's necessary to use effective methods to improve the reliability of relay protection. Firstly

the operation principle and criterion of line current differential protection were analyzed.Then

the influence of asymmetric delay on the reliability of relay protection was analyzed

and the quantitative analysis method of the influence under different fault conditions was determined. Finally

the feasibility and correctness of the method were verified. The results show that effects of asymmetric delay on reliability of relay protection have a significant correlation with fault conditions. This conclusion has practical value in reliability evaluation and channel optimization of relay protection.

关键词

Keywords

references

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