In this paper, a novel two-terminal fault location approach utilizing traveling-waves for series compensated transmission line connected to wind farms is presented. The approach is based on accurate estimation of arrival time of waves (ATWs) at both ends of the line. The first step in estimation of ATWs is the application of estimation of signal parameters via rotational invariant techniques (ESPRIT) on three-phase instantaneous voltage signals measured at both ends of the line after inception of fault in order to obtain reconstructed signals. The next step of the approach involves calculation of errors between aerial-modes of original and reconstructed signals (obtained via ESPRIT). Finally, the peak of squared-errors are utilized to determine ATWs. The simulation is carried out in PSACAD/EMTDC environment on IEEE-14 bus test system with a line having 50% series compensation connected to 300 MW wind farm. The efficacy of FLE approach is validated under different fault scenarios and found to be accurate regarding fault location estimation.

在本文中，提出了一种新的利用行波的风电场串联补偿输电线路的两端故障定位方法。该方法基于对线路两端的电波到达时间（ATW）的准确估计。估计ATW的第一步是通过旋转不变技术（ESPRIT）对故障发生后在线路两端测量的三相瞬时电压信号进行信号参数估计，以获得重构信号。该方法的下一步涉及计算原始信号和重构信号（通过ESPRIT获得）的空中模式之间的误差。最后，利用平方误差的峰值来确定ATW。该仿真是在PSACAD / EMTDC环境中的IEEE-14总线测试系统上进行的，该线路的50％串联补偿线路连接到300 MW风电场。FLE方法的有效性在不同的故障场景下得到了验证，并且在故障位置估计方面是准确的。