一种基于DSP的GIS局部放电检测仪的实现  

The Realization of Partial Discharge Detector in GIS Based on DSP

作　　者：王自成[1] 田文杰[2] 朱嘉林[2] 李现霞[1] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]北京信息科技大学传感器重点实验室,北京100101

出　　处：《现代电力》2014年第4期84-87,共4页Modern Electric Power

基　　金：国家自然科学基金项目(61172016);北京市自然科学基金项目(4122030)

摘　　要：实现了一种基于DSP的GIS局部放电检测仪。采用宽频带的压电薄膜声电传感器将局部放电产生的声信号或超声信号转化为电信号,通过DSP片内高速AD对来自超声传感器的信号进行采样,并对是否抓取到放电信号进行初步智能判断。确认有局部放电发生后,依次显示被抓取的放电信号的波形、幅度和频率。在用户现场测试的结果表明,通过比较多台检测仪的检测结果,可以将局部放电位置定位于GIS设备的两个绝缘环之间。A partial discharge detector in GIS is realized based on DSP. A broad-band piezoelectric thin film acoustic transducer is used to convert the acoustic or ultrasonic signal generated by partial discharge into an electric signal. And the signal from ultransonic transducer is sampled through the on-chip high-speed AD of a DSP, then whether a partial dis- charge occurs or not can be initially judged. When partial discharge is detected, the wave form, amplitude and fre- quency of the discharge signal are displayed successively. Field tests show that partial discharge may be located be- tween any two insulation rings of GIS by comparing detec- ting results of some detectors.

关 键 词：GIS设备 GIS局部放电 声电传感器 DSP 局 部放电检测 

分 类 号：TM93[电气工程—电力电子与电力传动]