摘要
接地极在直流输电系统中有很重要的作用,直接影响直流输电系统安全稳定运行。对某特高压换流站在大负荷试验期间发生的一起接地极入地馈线电缆故障情况进行梳理,通过试验数据检查分析,确定故障原因为电缆1处焊接点短路,对故障点进行处理后,恢复正常运行,提高了直流输电系统运行可靠性。
Grounding electrode plays an important role in DC transmission system,which directly affects the safe and stable operation of DC transmission system.It sorts out a fault of grounding electrode feeder cable in a UHV converter station during heavy load test.Through test data inspection and analysis,it is determined that the fault reason is cable fault caused by short circuit of a cable welding point.After the fault point processing,it resumes the normal operation and improves the operation reliability of DC transmission system.
作者
刘天作
马加夫
赵文诗
LIU Tianzuo;MA Jiafu;ZHAO Wenshi(State Grid Henan DC Operation & Maintenance Company,Zhengzhou,Henan 450000,China;State Grid East Inner Mongolia Maintenance Company, Tongliao,Inner Mongolia 028000,China)
出处
《东北电力技术》
2022年第3期51-55,共5页
Northeast Electric Power Technology
关键词
特高压换流站
接地极
电缆
回路电阻
短路
UHV converter station
grounding electrode
cable
loop resistance
short circuit
