工频双端故障测距算法的鲁棒性问题和新算法研究

在对基于分布参数线路的双端测距算法进行大量仿真的基础上，明确提出了双端测距算法的鲁棒性问题，即算法对各种不同类型故障的适应能力和对综合测量误差的抑制能力。在对其鲁棒性分析的启示下，提出了2种不需要双端（或多端）数据同步的分式型工频双端测距新算法。理论分析和仿真表明，新算法具有较强的鲁棒性，其测距综合性能指标明显高于现有同类工频双端测距算法；在一定的双端（或多端）电压、电流测量误差范围内，也优于GPS同步双端测距算法。

TWO NEW ALGORITHMS AND THEIR ROBUSTNESS FOR TWO-TERMINAL FAULT LOCATION ON HV TRANSMISSION LINE

Based on a lot of simulations of different algorithms for two-terminal fault location which were carried out on thetransmission line with distributed parameter. the robustness of the algorithms. i. e., its capability to adapt to different typesof faults and to suppress all kinds of disturbances is explicitly put forward. Considering effect of robustness of algorithms.two new algorithms for two-terminal fault location with a form of fraction are brought forward, which avoid the datasynchronization between the two terminals. From the results of theoretical analysis and data simulation. it can be concludedthat these two new algorithms excel the existing congener algorithms by higher precision and stronger robustness. and alsoexcel the synchronous algorithm with GPS for some range of the error of measured voltages and currents.