220kV CVT故障的诊断及分析

Fault Diagnosis and Analysis on 220kV Capacitor Voltage Transformer

本文介绍了一起220 kV电容式电压互感器(CVT)的发热缺陷,通过红外测温确认其缺陷类型及部位,结合高压试验、返厂解体等分析缺陷原因,并验证其正确性。同时针对变电设备历史运行数据、所处环境等因素,提出基于融合特征的综合故障诊断体系,使其能更加准确、高效率地发现并诊断设备缺陷,保障设备安全运行。

In this paper,the defect of over heat in 220 kV capacitor voltage transformer(CVT)is introduced The defect type and location are confirm by the infrared thermometry,the reason of the defect is analyzed by way of high voltage test and disassembly at the factory and its correctness is verified.At the same time,in view of such factors as historical operation data and the situated environment etc.of the substation equipment the comprehensive fault diagnosis system is proposed based on the fusion features,so to keep it find and diagnose fault of the equipment more accurately and efficiently and assure safe operation of the equipment.