电压互感器二次回路氧化锌阀片状态监测方法探讨

Study on the State Monitoring Method of ZnO Valve in the Secondary Circuit of Voltage Transformer

阐述了电压互感器二次回路氧化锌阀片被击穿损坏时,容易导致多点接地现象,对继电保护设备造成严重影响。提出的监测方法可以实时监测和掌握氧化锌阀片的运行状态,保证了状态检修的及时性,极大地降低了继电保护设备误动事故的发生。

It can easily lead to the phenomenon of multi-point grounding when the ZnO valve in the secondary circuit of voltage transformer is damaged, then the relay protection equipment will be affected seriously. The monitoring method presented in this paper can monitor and grasp the running state of ZnO valve in real time. The timeliness of condition-based maintenance can be ensured and the mal-operation accident of relay protection equipment can be reduced greatly.