基于非接触式雷电流测量装置的新型线路分布式雷击故障定位方法
发布时间：2018-07-14 19:50
【摘要】：输电线路延绵数千里,传统人工巡线方式查找雷击故障点费时费力。因此基于非接触式雷电流测量装置,结合行波测距和小波包理论,提出了一种新型分布式雷击故障定位方法。根据三相电流行波极性差异,提出了绕击、雷击避雷线和杆塔的雷击类型识别方法;针对绕击情况,进行了雷击是否闪络的判断、雷击区间范围和闪络侧的确定,推导了不同监测区间段内线路雷击点和闪络点定位公式;利用小波包变换提取行波波前到达时间进行定位计算。经EMTP-ATP软件仿真验证,该方法能准确地进行输电线路雷击故障定位,雷击点和闪络点定位误差均0.4%,具有重要的应用价值。
[Abstract]:Transmission lines extend thousands of miles, the traditional manual inspection method to find the lightning fault point takes time and effort. Based on the non-contact lightning current measuring device and combining the traveling wave location and wavelet packet theory, a new distributed lightning fault location method is proposed. According to the polarity difference of three-phase current traveling wave, the identification method of lightning strike type of lightning protection line and tower is put forward, and the judgement of whether lightning stroke flashes, the range of lightning strike interval and the determination of flashover side are carried out. The location formulas of lightning strike point and flashover point in different monitoring interval are derived, and the arrival time of traveling wave front is extracted by wavelet packet transform to calculate the location. The simulation of EMTP-ATP software shows that this method can accurately locate the lightning strike fault of transmission line, and the location error of lightning strike point and flashover point are both 0.4, which has important application value.
【作者单位】： 重庆大学输配电装备及系统安全与新技术国家重点实验室;南京供电公司;云南电力试验研究院(集团)有限公司电力研究院;
【基金】：国家重点基础研究发展计划(973计划)(2009CB724504) 国家自然科学基金(51177176) 云南电力公司科技基金(K-YN2012-200)~~
【分类号】：TM863
[Abstract]:Transmission lines extend thousands of miles, the traditional manual inspection method to find the lightning fault point takes time and effort. Based on the non-contact lightning current measuring device and combining the traveling wave location and wavelet packet theory, a new distributed lightning fault location method is proposed. According to the polarity difference of three-phase current traveling wave, the identification method of lightning strike type of lightning protection line and tower is put forward, and the judgement of whether lightning stroke flashes, the range of lightning strike interval and the determination of flashover side are carried out. The location formulas of lightning strike point and flashover point in different monitoring interval are derived, and the arrival time of traveling wave front is extracted by wavelet packet transform to calculate the location. The simulation of EMTP-ATP software shows that this method can accurately locate the lightning strike fault of transmission line, and the location error of lightning strike point and flashover point are both 0.4, which has important application value.
【作者单位】： 重庆大学输配电装备及系统安全与新技术国家重点实验室;南京供电公司;云南电力试验研究院(集团)有限公司电力研究院;
【基金】：国家重点基础研究发展计划(973计划)(2009CB724504) 国家自然科学基金(51177176) 云南电力公司科技基金(K-YN2012-200)~~
【分类号】：TM863
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