Traveling wave-based fault location formulation for hybrid lines with two sections

E. Leite, F. Lopes
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引用次数: 3

Abstract

In this paper, the mathematical development of a traveling wave (TW)-based fault location scheme for hybrid transmission lines (HTLs) with two sections is presented and evaluated. The formulation is able to accurately estimate the fault point on HTLs taking into account the different propagation velocities on each section. In order to carry out the proposed studies, the Alternative Transients Program (ATP) was used to simulate various fault scenarios in a 220 kV/50 Hz test power system, considering different fault distances in a HTL consisting of an overhead transmission line in series with an underground high voltage cable line. In each case, the obtained fault location result is compared with the fault distance estimation computed using a traditional two-terminal TW-based fault location method. The obtained results show that the evaluated fault location formulation is accurate and easy-to-use.
基于行波的两段混合线路故障定位公式
本文给出了一种基于行波的两段混合输电线路故障定位方案的数学推导,并对其进行了评价。该公式考虑到各路段的传播速度不同,能够准确地估计出HTLs上的故障点。为了开展上述研究,利用备选暂态程序(ATP)模拟了220 kV/50 Hz试验电力系统的各种故障场景,考虑了由架空输电线路串联与地下高压电缆线路组成的HTL中不同的故障距离。在每种情况下,将得到的故障定位结果与传统的基于双端tw的故障定位方法计算的故障距离进行比较。仿真结果表明,所建立的故障定位公式准确、易于使用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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