电网技术2017，Vol.41Issue(1)：296-301,6.DOI:10.13335/j.1000-3673.pst.2016.0601
基于CT拖尾电流截断算法的失灵保护延时优化研究
Research on Delay Optimization of Breaker Failure Protection Based on the CT Current Tail Truncation Algorithm
余越 1郭雅蓉 1李岩军 1李勇 2刘宇 3詹荣荣1
作者信息
- 1. 中国电力科学研究院，北京市 海淀区 100192
- 2. 国家电力调控中心华中分中心，湖北省 武汉市 430077
- 3. 国家电力调度控制中心，北京市 西城区 100031
- 折叠
摘要
Abstract
Breaker failure protection is a widely used back-up protection in power system. Breaker failure protection delay is a bit longer and corresponding clear time is also longer. System stability may be lost after single phase circuit breaker failure at some important nodes. Therefore, it is very important for improving system stability to research optimization method of breaker failure protection delay and to shorten fault duration. A CT current tail truncation algorithm based on CT tailing current vs short circuit current criterion plane is shown in this paper to quickly truncate CT tailing current to guarantee current element’s quick and reliable return even with CT tailing. This algorithm can shorten breaker failure protection delay without using P level CT,and significantly reduce system stability risk.关键词
失灵保护/延时优化/CT拖尾/截断Key words
breaker failure protection/delay optimization/CT tailing/truncation分类
信息技术与安全科学引用本文复制引用
余越,郭雅蓉,李岩军,李勇,刘宇,詹荣荣..基于CT拖尾电流截断算法的失灵保护延时优化研究[J].电网技术,2017,41(1):296-301,6.
