摘要
对于树形结构的配电网,提出了一种行波故障定位方法。该方法利用B型行波定位法的双端测距基础理论,进而扩展到多端行波故障定位。通过测量故障点到配电网线路各末端的初始行波到达时刻,推导出一种不受波速影响的测距计算方法。同时以各末端为起点计算出多个定位点,取故障点最近的分支点或者其他点作为原点,计算各个定位点到原点距离的平均值,由该平均值定位故障点,提高了故障点定位的精确度。最后通过MATLAB仿真软件进行仿真验证,结果表明此定位方法能够快速准确地定位故障点。
A kind of fault location method for travelling wave is proposed aiming at the power distribution network with tree shape structure which uses basic theory of double terminal ranging of B typed travelling wave location method and further expands to multi-terminal travelling wave location method. By measuring arrival moment of the initial travelling wave from the fault point to each end of the power distribution network line,a kind of calculating method for ranging not affected by wave speed is derived. Taking each end as the starting point,multiple location points are worked out,and taking the branch point nearest to the fault point or other points as the original point,the average value of distance from each location point to the original point is worked out. It is able to improve precision of fault location by using this average value to locate the fault point.MATLAB software is used for emulation proof and the result indicates that this method is able to rapidly and correctly locate the fault point.
出处
《广东电力》
2016年第4期79-83,127,共6页
Guangdong Electric Power
关键词
行波
故障定位
配电网
多端
平均值
travelling wave
fault location
power distribution network
multi-terminal
average value
