1. 东北石油大学电气信息工程学院 大庆 163318;2. 大庆油田有限责任公司采油一厂电力维修大队 大庆 163000
TM712
1. School of Electrical Engineering and Information, Northeast Petroleum University, Daqing 163318, China; 2. Electric Power Maintenance Brigade No.1 Oil Extraction Plant Daqing Oilfield Co.,Ltd, Daqing 163000, China
提出一种基于测得的零序电流计算样本熵值的单相接地故障区段定位的方法。该方法在检测各个点的零序电流值的基础上，通过求得各个点的样本熵值，进一步计算得到相邻两点样本熵值差值的绝对值来比较，最后根据差值绝对值最大的两点对应的区段确定故障发生区段。采用ATP搭建上述单相接地故障的仿真模型，重点研究经消弧线圈接地的情况。通过大量的ATP实验表明，在不同的初相角和不同接地电阻情况下，该方法均可以有效确定故障区段位置。
A method of singlephasetoground faultzonelocation based on measured entropy of zero sequence current is proposed.Based on the detection of the zero sequence current value of each point, by obtaining the sample entropy of each point, the absolute value of the difference between the two points of the sample is obtained,. Finally, by determining the absolute value of the difference Two points correspond to the section to find the fault occurrence section.The simulation model of singlephase earth fault is constructed by using ATP, focusing on the arc suppression coil grounded.Through a large number of ATP experiments,It shows that in different initial phase angle and different ground resistance case, the method can effectively determine the fault location.
付光杰,盖磊,盖峰,赵月娇.基于样本熵的单相接地故障区段定位的研究[J].国外电子测量技术,2017,36(10):1-5
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