一起220kV电容式电压互感器三相电压不平衡的故障分析

Fault Analysis of Three-phase Unbalance Voltage of 220kV Capacitive Voltage Transformer

电容式电压互感器是电网运行中不可或缺的重要设备,其主要是由电容分压器和电磁单元两部分组成。由于它结构简单且可兼具多种设备的功能,近几年,在电力系统中得到广泛应用。但由于厂家工艺、产品本身问题等原因,电容式电压互感器发生的故障也不少,就一起电容式电压互感器三相电压不平衡故障进行分析。

Capacitor voltage transformers are important equipments in power network operation, which mainly consists of capacitive divider and electromaynetic unit. Becuuse its structure in simple and many functions, they are widely used in the power sysetm. However, many reasons of technologies and production itself, lots of faults for the capucitive voltage transformer often occurs. The paper analyzed the three-phase voltage unbalance fault of the capacitive voltage transformer.