电子测试
電子測試
전자측시
ELECTRONIC TEST
2013年
21期
11-16
,共6页
故障绝缘子%泄漏电流%频谱分析%电晕脉冲
故障絕緣子%洩漏電流%頻譜分析%電暈脈遲
고장절연자%설루전류%빈보분석%전훈맥충
faulty insulator%leakage current spectral analysis%corona pulse
在高压输电线路上，故障绝缘子特别是零值绝缘子将大大降低高压线路的绝缘水平，直接威胁到电力系统的安全运行。为了可以实现在地面上检测不良绝缘子，本文利用电流传感器套入杆塔接地引线，通过感应采集极其微弱的漏电脉冲电流信号，并用漏电脉冲FFT频谱分析法和电晕脉冲相位比较法两种方法可对所采集信号进行分析。通过对实验室及现场采集的数据的分析，该检测仪可以明显看出故障绝缘子的存在。
在高壓輸電線路上，故障絕緣子特彆是零值絕緣子將大大降低高壓線路的絕緣水平，直接威脅到電力繫統的安全運行。為瞭可以實現在地麵上檢測不良絕緣子，本文利用電流傳感器套入桿塔接地引線，通過感應採集極其微弱的漏電脈遲電流信號，併用漏電脈遲FFT頻譜分析法和電暈脈遲相位比較法兩種方法可對所採集信號進行分析。通過對實驗室及現場採集的數據的分析，該檢測儀可以明顯看齣故障絕緣子的存在。
재고압수전선로상，고장절연자특별시령치절연자장대대강저고압선로적절연수평，직접위협도전력계통적안전운행。위료가이실현재지면상검측불량절연자，본문이용전류전감기투입간탑접지인선，통과감응채집겁기미약적루전맥충전류신호，병용루전맥충FFT빈보분석법화전훈맥충상위비교법량충방법가대소채집신호진행분석。통과대실험실급현장채집적수거적분석，해검측의가이명현간출고장절연자적존재。
On high voltage line, the faulty insulator, especial the zero value insulator, may greatly reduce the insulation level of high-voltage transmission line, thus can threat to the safe operation of power system directly. In order to detect faulty insulators on the ground,in this paper the current sensor is slipped into the tower grounding wire, then we can collect the tiny leakage current pulse signal by inducing. After that, there are two kinds of method to analyze the signal, the two methods are the analysis of FFT spectrum of leakage current pulse and the corona pulse phase comparison method. Based on the analysis of laboratory and field data, the detector can clearly see that the existence of faulty insulators.
