变压器局部放电综合判断分析

Comprehensive Judgement Analysis about Partial Discharge in Transformer

指出了变压器局部放电定位的重要性,简述了多端子测量多端子校正、变电位多端测量、脉冲极性鉴定法和超声波定位法的原理,通过实例分析了局部放电定位过程和处理方法, 并得出要根据产品的不同结构和类型,灵活选择不同的方法, 且相互验证,互为补充,才能较准确地进行局放定位的结论。

The paper has pointed out the importance of partial discharge location in transformer. The principles of multiple terminals measurement and calibration, variable voltage multiple terminals measurement, pulse polarity differentiation, and partial discharge location based on ultrasonic are sketched. Through an example, the location process and treatment method of partial discharge are analyzed. In order to locate the partial discharge more accurately, it should be made to choose different methods flexibly according to different structuer and type of the transformer, and to make cpmperhensive analysis.