几种行波测距算法的比较

COMPARISON OF SEVERAL ALGORITHMS OF TRAVELLING WAVE BASED FAULT LOCATION

介绍了 4种行波测距算法 ,并从理论上对这些算法的优缺点进行了分析。反射波法的测距精度较高 ,但是反射波波头难以准确检测 ,容易误测距 ;零模波头法的测距精度略低 ,但实现简单 ,受干扰较少 ,结果可靠性高 ;双端测距建议直接使用第 1个线模波头 ,结果具有很高的精度和可靠性 ,无需引入零模分量的双端测距算法。 EMTP仿真结果表明所述观点正确、可靠。

This paper compares four algorithms of travelling wave based fault location. The precision of the algorithm based on the wave surge reflection is higher than that of the algorithm based on earth mode. But the time measure of wave surge reflection is difficult while it is easy for earth mode surge. If the data got from the both sides of line are used for locating fault, only the aerial mode waveform is suggested to use and it is not necessary to use earth mode waveform. EMTP simulation results show that the views above are correct.