变压器局放超声检测和定位技术现状及发展

Actualities and Perspectives of Techniques of Detection and Localization of Partial Discharges in Power Transformers Adopting Ultrasonic Methods

阐述了变压器局部放电产生超声波的机理和超声波定位法原理;对超声波在变压器中的传播规律、超声波定位法的分类及其评述和联合检测、定位等方面进行了综述;最后探讨了超声法在局部放电检测和定位中存在的问题及发展方向。

The paper elaborates the mechanism of generating acoustic signals of partial discharges in transformers and the principles of ultrasonic localization methods,and the laws of ultrasonic propaga-tions in transformers,the classifications of ultrasonic localization methods and commentaries on them, the joint detection and localization are principally and systematically summarized.Finally,it discusses the existing problems and perspectives of ultrasonic localization methods in the detection and localiza-tion of partial discharges.