摘要
本文针对高压输电线距离保护及故障测距中常用的解微分方程算法,提出了一种零序电流相位修正的方法。暂态仿真结果表明:这种相位修正方法,经过有限次的速代修正就可以较大地提高测距计算的精度,这对于距离保护中防止区内拒动或超越误动很有实际意义。这种相位修正方法仍以解微分方程的瞬时值计算为基础,不会增加过多的计算时间,因此微机距离保护应用这种算法是有可能的。
The paper proposes a method which corrects the angle of zero-sequence current in the algorithm of differential equation used for distance protection and fault location of HV transmission lines. Transient simulation results show that this method can improve accuracy of fault location remarkably in using limited iterations and avoid overreach, underreach of distance protection efficiently. Based upon calculating instantaneous voltages and currents, this algorithm is fast enough to use for computer based distance protection.
出处
《电力系统自动化》
EI
CSCD
北大核心
1990年第1期33-39,共7页
Automation of Electric Power Systems
