高压输电线路故障定位算法的研究

Research on Fault Location Algorithm in High Voltage Transmission Line

高压输电线路发生故障时将出现暂态行波,常利用暂态行波进行线路故障定位,定位精度可能受波速的影响。在分析比较现有确定行波波速算法的基础上,提出了一种新算法,高压输电线路中行波波速不确定不给故障定位带来影响,理论证明该算法不受线路弧垂的影响。

When the fault takes place in the high-voltage transmission line, the transient traveling wave （TTW） will occur. The fault location by TTW is the common method up-to-date, but the location accuracy probably affected by the speed of TTW. Based on the comparison and analysis of existing wave velocity algorithm, proposes a new algorithm, which could avoid the influence of uncertain velocity of traveling wave on fault location in highvoltage transmission lines. And it is theoretically proved that this algorithm is not affected by the sag of lines.