输电线路双端行波测距算法研究

Research on Double-Terminal Traveling Wave Fault Location Algorithm for Transmission Line

高压输电线路在我国广泛分布,准确定位线路故障点,对于保障电力供应的可靠性与稳定性,防止故障进一步扩大,并且减少运维、检修人员的工作量至关重要。提出了一种采用双端行波测距的算法定位故障点,首先将输电线路划分为几个区间,每一个区间节点处安装行波测距仪;然后根据每一个行波测距仪检测到的信号时间计算故障矩阵,最后对故障矩阵进行调零修正与行波速度修正,以提高故障距离计算的精度;最后搭建了仿真模型,验证了所提算法的有效性。

High-voltage transmission lines are widely distributed in China.Accurately locating their faults is crucial for ensuring the reliability and stability of the power supply,preventing faults from spreading further,and reducing the workload of maintenance and repair personnel.This paper investigates a double-terminal travelling wave fault location algorithm.The transmission line is first divided into several segments,with a travelling wave detector installed at each segment node.The algorithm calculates the fault matrix based on the signal time detected by each travelling wave detector.Subsequently,zero correction and travelling wave velocity correction are applied to the fault matrix to improve the accuracy of fault distance calculation.Finally,a simulation model is built to validate the effectiveness of the proposed algorithm.