单局放传感器电缆局部放电源点定位方法研究  

Research on localization method of cable partial discharged point by single partial discharged sensor

作　　者：蒋超[1] 徐妍 王江彬 李致金[2] JIANG Chao;XU Yan;WANG Jiangbin;LI Zhijin(Jiangsu Fangtian Power Technology Co.,Ltd.,Nanjing 211100,China;Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]江苏方天电力技术有限公司,江苏南京211100 [2]南京信息工程大学,江苏南京210044

出　　处：《电子设计工程》2022年第2期24-27,32,共5页Electronic Design Engineering

基　　金：江苏方天电力技术有限公司科技项目(YF201904)。

摘　　要：局部放电源点定位检测中,一般用两个局放传感器实现局放源点的位置定位和方向定位。两个局放传感器在检测设备中体积较大、功耗大、成本高,文中提出了一种基于单个局放传感器的局放源点位置定位和方向定位方法。该方法将局放传感器放置在一定的位置,根据局放源点发出的高频局放信号传输速度,计算出局放源点方向定位的基准时间。系统时间测量单元记取3个局放高频信号到达局放传感器的时间。系统根据局放高频信号到达局放传感器时间差,精确定位局放源点的位置和方向。In the detection of partial discharge source points,two partial discharge sensors are generally used to locate the location and direction of partial discharge source points.Two partial discharge sensors in the detection equipment is larger in volume,high power consumption,high cost.In this paper,a method for location and direction of source points based on single partial discharge sensor is proposed.In this method, the partial discharge sensor is placed in a certain position, and according to the transmission speed of the high frequency partial discharge signal from the partial discharge source point,the direction of the outgoing discharge point is calculated to determine the reference time.The system time measurement unit records the arrival time of three high frequency partial discharge signals to the partial amplifier sensor.The system accurately locates the location and direction of the source point according to the time difference between the high frequency signal of partial discharge and the sensor of partial discharge.

关 键 词：局部放电 源点定位 HFCT 方向确定 

分 类 号：TN06[电子电信—物理电子学]