中国电机工程学报2016，Vol.36Issue(13)：3440-3450,11.DOI:10.13334/j.0258-8013.pcsee.151054
自适应线路差动保护新原理
A Novel Adaptive Differential Line Protection Principle
刘凯 1李幼仪 2伊沃布林西奇 3施展鹏 3王建平2
作者信息
- 1. ABB中国研究院，北京市朝阳区 100015
- 2. ABB瑞典研究院，瑞典韦斯特罗斯 SE-72178
- 折叠
摘要
Abstract
Differential current protection has been widely used for the line as main protection. Conventional differential current protection has relatively lower sensitivity because of charging current and heavy load; and may mal-trip for external faults with CT saturation, and the additional methods to avoid mal-operation from CT saturation may slow down the operation speed and sensitivity. Adaptive line differential protection enhanced by phase angle was proposed, which achieves good balance among high sensitivity, fast operation speed and high security. Proposed protection principle is immune to charging current and CT saturation, and has fast operation speed with small value of the operate time dispersion. PSCAD/Matlab simulation verifies the validity of proposed principle.关键词
输电线路/差动保护/故障分量/相角差/自适应保护/CT饱和Key words
transmission line/differential protection/fault component/phase angle difference/adaptive protection/CT saturation分类
信息技术与安全科学引用本文复制引用
刘凯,李幼仪,伊沃布林西奇,施展鹏,王建平..自适应线路差动保护新原理[J].中国电机工程学报,2016,36(13):3440-3450,11.
