Accurate Two-Terminal Transmission Line Fault Location Using Traveling Waves
Accurate Two-Terminal Transmission Line Fault Location Using Traveling Waves
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DOI：
10.1109/tpwrd.2017.2711262
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发表时间：
2018-04
影响因子：
4.4
通讯作者：
F. Lopes;K. Dantas;K. Silva;F. Costa
中科院分区：
文献类型：
--
作者：
F. Lopes;K. Dantas;K. Silva;F. Costa
提出了一种新颖的基于双端行波的故障测距公式。它仅取决于第一次入射TW与线路两端故障点的连续反射之间的时间差。因此，所提出的公式既不需要数据同步，也不需要线路参数，这是通常影响基于TW的故障定位方案的误差源。对一条典型的500千伏线路上的几个故障进行了仿真，比较了该方法与经典两端方法的性能。结果表明，即使在数据同步误差和被监测线路参数存在不确定性的情况下，该公式也能够准确地定位输电线路的故障。
This paper presents an innovative two-terminal traveling wave (TW)-based fault location formulation. It depends only on the time difference between the first incident TW and the successive reflection from the fault point, at both line ends. Thereby, the proposed formulation requires neither data synchronization nor line parameters, which are sources of error that usually affect TW-based fault location schemes. Several faults on a typical 500 kV line were simulated to compare the proposed formulation performance with that of a classical two-end approach. The obtained results attest that the proposed formulation is able to accurately locate faults on transmission lines, even when data synchronism errors and uncertainties in the monitored line parameters exist.