东北电力技术2026，Vol.47Issue(8)：17-21,27,6.
一起接地开关联锁功能失效故障分析
Fault Analysis of Ground Switch Interlock Function Failure
王常乐 1张明 1朱宁俊1
作者信息
- 1. 国网江苏省电力有限公司南京供电分公司,江苏 南京 210000
- 折叠
摘要
Abstract
During the on-site acceptance of a certain 500 kV substation,it finds that the interlock of the ground switch is abnormal.It manifests that when the disconnector is closed,the local closing button could still make the ground switch motor energized and operate.Although mechanical interlocking blocks the closing operation of the ground switch,electrical circuit defects pose a serious safety risk.After circuit investigation,it confirms that the cause of the fault is the wrong connection between the live wire of the self-holding circuit and the live wire of the local closing circuit in the electric operation circuit.This wiring error leads to the closing circuit being able to conduct during local control,but the self-holding function fails.After correcting the wiring,the anti-misoperation function of the ground switch returns to normal in both remote and local operation modes.This case analysis provides an technical reference for similar substations that adopt ground switches.关键词
接地开关/电机回路/电气联锁/变电站/防误操作Key words
ground switch/motor circuit/electrical interlock/substation/anti-misoperation分类
信息技术与安全科学引用本文复制引用
王常乐,张明,朱宁俊..一起接地开关联锁功能失效故障分析[J].东北电力技术,2026,47(8):17-21,27,6.
