振荡波电压下XLPE电缆局部放电定位和智能识别的研究  

Study on Intelligent Recognition and Location of Partial Discharges in XLPE Cable under Damped AC Voltage

作　　者：张龙 黄亭 李洪杰[3] ZHANG Long;HUANG Ting;LI Hongjie(State Grid Xi'an Power Supply Company,Xi'an 710032,China;Shaanxi Power Transmission and Transfer Engineering Co.,Ltd.,Xi'an 710014,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国网西安供电公司,陕西西安710032 [2]陕西送变电工程有限公司,陕西西安710014 [3]西安交通大学电气工程学院,陕西西安710049

出　　处：《供用电》2020年第12期81-86,92,共7页Distribution & Utilization

摘　　要：振荡波测试技术主要应用于电缆局部放电检测,局部放电模式识别和故障定位是评价电力设备运行状态的重要方法。文章介绍阻尼振荡波电压检测系统以及局部放电定位原理,通过采集振荡波电压下XLPE电缆4类典型缺陷的局放信号,采用BP神经网络进行模式识别。在实际工程中通过阻尼振荡波测试系统对电缆局部放电位置以及放电类型做出综合判断,对缺陷位置修复、完善后再次进行局放测试,达到电缆安全运行要求,验证了在电缆局放模式识别及故障定位中振荡波检测系统的良好效果。Oscillating wave testing technology is mainly used in cable partial discharge detection.Partial discharge pattern recognition and fault location are important methods to evaluate the operating status of power equipment.The article introduces the realization of damped oscillatory wave(DAC)voltage detection system based on BP neural network pattern recognition and the principle of partial discharge positioning.Through the comprehensive judgment of the cable partial discharge position and discharge type of the typical 4 types of XLPE cable defects in the actual project,the defect position repair,and the partial discharge test again,the good effect of the oscillatory wave detection system is verified.

关 键 词：XLPE电缆 阻尼振荡波电压 局部放电 故障定位 模式识别 

分 类 号：TM855[电气工程—高电压与绝缘技术]