高压电缆接头局部放电检测研究

针对高压电缆接头局部放电的危害,论述了声学检测法在高压电缆接头局部放电检测中的优势,阐述了国内外关于局部放电检测的研究进展,阐述了超声换能器的工作原理,通过搭建高压电缆局部放电检测系统对电缆放电现象进行检测分析,并进行了重复性实验及误差性实验分析,证明了检测装置的适应性,为铁路高压电缆局部放电检测与预警提供有效手段。

With regard to the hazards of partial discharge of high-voltage cable joints,the paper illustrates the advantages of the acoustic inspection method for high voltage cable joints,introduces the process of research on partial discharge inspection at home and abroad,describes the working principle of ultrasonic transducer.The inspection and analysis of partial discharge of cables made through establishing of partial discharge inspection system for high voltage cable as well as the repeated experimental analysis of errors verify the adaptability of the inspection device,providing effective means for inspection and pre-alarm of partial discharge of high voltage cables of railways.