输电线路故障行波波头检测方法研究

Research on Detection Method of Transmission Line Fault Traveling Wave Head

为实现针对VSC-HVDC输电线路故障的精确检测,提出一套基于行波波头极性的故障检测方法。基于VSC-HVDC输电线路的基本结构和故障电压行波网格特性,提出单端行波故障测距算法,并通过仿真实验的方式对该算法的可靠性加以验证。经实验研究发现,所提出的单端行波故障测距算法平均测距误差仅有0.039 4%,基本满足应用需求,具有一定应用价值。

In order to achieve accurate fault detection for VSC-HVDC transmission lines,a set of fault detection method based on the polari-ty of traveling wave head is proposed in this study.Based on the basic structure of VSC-HVDC transmission lines and the charac-teristics of fault voltage traveling wave grid,a single ended traveling wave fault location algorithm is proposed,and the reliability of the algorithm is verified by simulation experiments.The experimental results show that the average fault location error of the single ended traveling wave fault location algorithm proposed in this study is only 0.0394%,which basically meets the applica-tion requirements and has certain application value.