并联低抗投入时差动保护误动的分析与应对  

Analysis of Differential Protection Misoperation while Charging the Low Voltage Shunt Reactor

作　　者：饶威 RAO Wei(Maintenance Branch of Jiangsu Electric Power Co.,Ltd.,Changzhou 213000,China)

机构地区：[1]江苏省电力有限公司检修分公司,江苏常州213000

出　　处：《山东工业技术》2020年第1期43-46,共4页Journal of Shandong Industrial Technology

摘　　要：针对并联低抗投入时发生差动保护误动的现象,结合现场故障录波和保护动作信息,对差动保护的原理进行了分析,明确了并联低压电抗器在投入时CT瞬间进入饱和状态是造成差动误动的主要原因。并提出了防止误动出现的几项应对措施。With regard to the differential protection misoperation happened in the low voltage shunt reactor, considering the on-site fault recording and protection information, this paper make an analysis on the theory of the differential protection and propose the several measurement to prevent the misoperation.

关 键 词：并联低压电抗器 CT饱和 差动保护 误动 

分 类 号：TM301[电气工程—电机]