电压互感器电缆绝缘受损造成二次电压异常分析

Analysis of Secondary Voltage Abnormity Caused by Impaired Insulation of Voltage Transformer Cable

电压互感器将电力系统的一次电压按一定的变比缩小为要求的二次电压,供各种保护、测量、计量等二次设备使用;使二次设备与一次高压设备隔离,保证人身和设备的安全。本文简介特高压电容式电压互感器结构,并结合现场典型异常,分析电压互感器电缆绝缘受损造成二次电压异常的案例,通过查找原因。

The voltage transformer reduces the primary voltage of the power system to a required secondary voltage according to a certain ratio, and is used for secondary equipment such as various protection, measurement, and measurement; it isolates the secondary equipment from the primary high-voltage equipment and ensures personal safety. And equipment safety. This paper introduces the structure of UHV capacitive voltage transformers, and combines the typical abnormalities in the field to analyze the case of secondary voltage abnormalities caused by damaged insulation of the voltage transformer cable .