电网技术2011，Vol.35Issue(6)：183-187,5.
基于电流差动的双端带并联电抗器输电线路三相重合闸永久性故障判别
Differential Current-Based Identification of Permanent Faults for Three-Phase Autoreclosure on Transmission Line With Shunt Reactors at Both Ends
摘要
Abstract
Based the principle of segregated current differential, a method to judge permanent fault for three-phase autoreclosure on transmission line with shunt teapots at both ends proposed In the proposed method. the currents in shunt-reactors are taken as known quantities, and the capacitance current is compensated by time-domain approach. When circuit breakers at both ends of the faulty line are tripped out, by use of current differential principle three-phase currents of two shunt reactors al both ends are compared For instantaneous fault,the current differences of corresponding phases of shunt reactors at both ends are zero; for permanent fault. the current differences of corresponding phases of shunt reactors at both ends are much larger than zero. On this basis. the permnent fault can be identified A lot of results of EMTP simulation show that the proposd judgment method can effectively distinguish permanent fault from instantaneous fault, thus based on the identification the three-phase adaptive autoreclosure for transmission line with shunt-reactors at both ends can be reliably implemented.关键词
电力系统/继电保护/输电线路/并联电抗器/三相重合闸/分相电流差动Key words
power system/ protective relalying/transmission line/ shunt reactors/ three-phase adaptive reclosure/ segregated current differential分类
信息技术与安全科学引用本文复制引用
梁振锋,索南加乐,宋国兵..基于电流差动的双端带并联电抗器输电线路三相重合闸永久性故障判别[J].电网技术,2011,35(6):183-187,5.基金项目
国家自然科学基金重点项目(51037005,50877062). （51037005,50877062）
