中国电力2012，Vol.45Issue(6)：5-9,5.
串联补偿线路的距离保护研究
Study on distance protection for series-compensated lines
宣文博 1张艳霞1
作者信息
- 1. 天津大学 智能电网教育部重点实验室,天津 300072
- 折叠
摘要
Abstract
By the analysis of the re lationship between the measured and real impedance of a line, a compensated impedance with self-adaptive characteristics was defined. The phase angles of the defined impedance were analyzed in different scenarios, in which the phase angle of the compensated impedance is 0° when a fault happens before the series capacitor and is 90-270° otherwise. Accordingly, a new fault location method was derived to form a new series-compensated line protection scheme combined with traditional level-detection methods used in distance protection. The proposed method can be applied to various operation modes with different installation locations of series compensators in a system. The method can also avoid overreach problem of distance relays and improve the sensitivity effectively. The validity and reliability of the proposed scheme were verified by the simulation on MATLAB.关键词
串联补偿线路/距离保护/故障点区域识别/相角特性Key words
series-compensated line/ distance protection/ fault point identification/ phase angle分类
信息技术与安全科学引用本文复制引用
宣文博,张艳霞..串联补偿线路的距离保护研究[J].中国电力,2012,45(6):5-9,5.
