换流站交流滤波器电容器组不平衡保护故障分析  

Analysis of Unbalanced Protection Fault of AC Filter Capacitor Bank in Converter Station

作　　者：颉雅迪 李山 李童 张媛 XIE Ya-di;LI Shan;LI Tong;ZHANG Yuan(Electric Power Research Institute of State Grid Xinjiang Electric Power Co.,Ltd,Urumqi 830013,China)

机构地区：[1]国网新疆电力有限公司电力科学研究院,新疆乌鲁木齐830013

出　　处：《电工电气》2024年第10期42-46,共5页Electrotechnics Electric

摘　　要：交流滤波器的运行工况直接影响直流输电系统的稳定运行。针对某换流站交流滤波器发生不平衡保护动作导致开关跳闸事故,结合交流滤波器实际运行经验及故障录波数据,对交流滤波器异常情况进行了分析,基于现场解体试验,查明具体故障位置存在于电容器单体的单一串联段内,故障由电容器元件击穿引起。针对电容器故障的具体原因,提出了有效的解决措施。The operational states of AC filters directly affect the stable operation of the direct current transmission system.In response to the switch tripping accident caused by the unbalanced protection action of the AC filter in a certain converter station.This article combines practical operating experience and fault recording data of AC filters,and analyzes the abnormal situation of the AC filter.Based on on-site disintegrate trials,then identifying the specific fault location that exists in a single series segment of a capacitor cell,the fault is caused by the breakdown of capacitor components.Finally,according to the specific reasons of capacitor failure,the effective solutions are put forward.

关 键 词：交流滤波器 换流站 不平衡保护 故障录波数据 电容器组 解体试验 串联段 

分 类 号：TM721.1[电气工程—电力系统及自动化] TN713[电子电信—电路与系统]