摘要
基于超高频局放在线监测系统中220 k V变电站110 k V I母多数耦合器监测到四个象限都出现幅值较大并且连续的局放现象,采用时间差分析法进行超高频局放定位,采用超声局放法对该开关上端进行检测确认,将该间隔由热备用转冷备用后,局放信号消失,得到进一步验证。现场局放定位技术对GIS设备现场运行与维护有一定的指导意义。
Based on ultra-high frequency（UHF） online monitoring system, found in most couplers of 110 kV I bus occured four quadrants larger amplitude and continuous partial discharge （PD） signal in the 220 kV substation. In order to reconfirm and position, using time difference analysis method, arrange UHF partial discharge coupler location in GIS site. In order to confirm, detect the upper part of the switch by using ultrasonic PD method. The PD signal disappeared by changing hot standby to cold standby, that was further verified. The PD positioning technology has certain guiding significance for GIS equipment operation and maintenance.
出处
《电器与能效管理技术》
2015年第22期31-35,共5页
Electrical & Energy Management Technology
关键词
GIS
在线监测系统
超高频
超声
局放定位
GIS
online monitoring system
ultra-high frequency
ultrasonic
PD positioning
