电容式电压互感器二次电压监测法的应用

Application of Secondary Voltage Monitoring Method for Capacitive Voltage Transformer

电容式电压互感器发生的故障频率较高,二次电压异常是常见的电容式电压互感器故障表征形式。分析电容式电压互感器的工作原理,结合二次电压异常的实例,研究了互感器内部各种元件故障引起二次电压异常的机理,通过对故障互感器电气试验、解体检查和处理,提出了防范故障的建议。

The fault frequency of capacitive voltage transformer is high, and the abnormal secondary voltage is a common fault representation of capacitive voltage transformer. In this paper, the working principle of capacitive voltage transformer is analyzed, and the mechanism of secondary voltage anomaly caused by faults of various components in the transformer is studied with an example of secondary voltage anomaly. Through the electrical test, disassembly inspection and treatment of the fault transformer, the suggestions for preventing the fault are put forward.