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Methodology for testing a parameter-free fault locator for transmission lines

机译：测试传输线无参数故障定位器的方法

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This paper presents a comparison between two different approaches to fault location both with and without utilising transmission line parameters. Firstly, an-impedance-based parameter-dependent algorithm, derived by using modal transformation theory and fast Fourier transform is presented. The methodology is able to locate the fault whether it is on an overhead line or on an underground power cable. The second algorithm is a parameter-free fault location method that uses time synchronised data. Here, the unknown fault location is determined from voltage and current phasors, synchronously measured at both line terminals. This approach to fault location avoids the requirement for prior knowledge of line parameters, which is advantageous as line parameters are not always known precisely. This paper presents the results of algorithm testing through the use of ATPDraw simulations and MATLAB. The results were validated through laboratory experiments. The results of the line parameter-free model are compared with those from the parameter-dependent model. Both algorithms were tested for single line to ground faults. (C) 2016 Elsevier B.V. All rights reserved.
机译：本文介绍了在使用和不使用传输线参数的情况下，两种不同的故障定位方法之间的比较。首先，提出了一种基于阻抗的参数相关算法，该算法是基于模态变换理论和快速傅里叶变换的。无论是架空线还是地下电缆，该方法都能够定位故障。第二种算法是使用时间同步数据的无参数故障定位方法。在此，未知故障位置由电压和电流相量确定，并在两个线路端子上同步测量。故障定位的这种方法避免了对线路参数的先验知识的需求，这是有利的，因为并不总是精确地知道线路参数。本文介绍了使用ATPDraw仿真和MATLAB进行算法测试的结果。通过实验室实验验证了结果。在线无参数模型的结果与参数相关模型的结果进行比较。两种算法都针对单线接地故障进行了测试。 （C）2016 Elsevier B.V.保留所有权利。

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