摘要
变电站控制与信息交互都离不开低压电缆,随着电缆使用年限增加,逐渐丧失绝缘性能,使其在绝缘薄弱的区域与大地之间形成某种导电途径,导致二次回路误导通、开关误动作现象时有发生,本文结合一起隔离开关异常合闸故障,分析控制回路故障原因,并提出相关整改措施。
The control and information interaction in substations are inseparable from low-voltage cables.As the service life of cables increases,they gradually lose their insulating properties,forming some conductive paths between areas with weak insulation and the ground.This leads to misoperations in secondary circuits and switches.This article,in conjunction with an abnormal closing fault of an isolation switch,analyzes the causes of control circuit faults and proposes relevant rectification measures.
作者
付士亮
张丽
陈自强
施航
Fu Shiiang;Zhang Li;Chen Ziqiang;Shi Hang(Honghe Power Supply Bureau of Yunnan Power Grid Corporation,Honghe 661100,Yunnan,China;Electric Power Research Institute of Yunnan Power Grid Corporation,Kunming 650011,Yunnan,China;Lincang Power Supply Bureau of Yunnan Power Grid Corporation,Lincang 677000,Yunnan,China;Wenshan Power Supply Bureau of Yunnan Power Grid Corporation,Wenshan 663000,Yunnan,China)
出处
《云南电力技术》
2024年第4期83-85,91,共4页
Yunnan Electric Power
关键词
隔离开关
合闸异常
绝缘异常
等效电路:整改优化
Isolation switch
Abnormal closing
Insulation anomaly
Equivalent circuit
Rectification and optimization
