10 kV并联电容器组不平衡保护动作诊断及分析  

Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank

作　　者：杨红权 高竣 邱炜 刘彦琴 刘鑫 刘君 蔡川 郭超 陈佳 胡林 YANG Hongquan;GAO Jun;QIU Wei;LIU Yanqin;LIU Xin;LIU Jun;CAI Chuan;GUO Chao;CHEN Jia;HU Lin(State Grid Sichuan Electric Power Chengdu Power Supply Company,Chengdu 610000,China)

机构地区：[1]国网四川电力成都供电公司,成都610000

出　　处：《电力电容器与无功补偿》2024年第2期27-31,共5页Power Capacitor & Reactive Power Compensation

摘　　要：针对一起10 kV并联电容器组不平衡保护动作的故障案例,通过现场对并联电容器、电抗器、放电线圈、避雷器等进行诊断性试验,利用PSCAD对不平衡电压仿真计算,以及根据规程重新核算保护定值,最终确认了引起保护动作原因为该电容器内部存在故障以及不平衡保护定值设置不当。In view of a fault case of unbalanced protection of 10 kV shunt capacitor bank,it is finally confirmed through on-site diagnostic tests on shunt capacitors,reactors,discharge coils and arresters simulation calculation of unbalanced voltage by the use of PSCAD that the cause of the protection is due to the fault inside the capacitor and the improper setting of the unbalanced protection setting.

关 键 词：并联电容器组 不平衡保护 保护定值 诊断试验 

分 类 号：TM53[电气工程—电器]