戴锋,叶昱媛,刘贞瑶,陈轩,沙浩源,郑建勇.基于S变换及同步相量测量的输电线路故障定位研究[J].电测与仪表,2020,57(8):13-19. Dai Feng,Ye Yuyuan,Liu Zhenyao,Chen Xuan,Sha Haoyuan,Zheng Jianyong.Research on Fault Location of Transmission Line Based on S-Transform and Synchronized Phasor Measurement[J].Electrical Measurement & Instrumentation,2020,57(8):13-19.
Research on Fault Location of Transmission Line Based on S-Transform and Synchronized Phasor Measurement
A fault location method for transmission line based on S-transform and PMU is proposed in this paper. The two-terminal voltage data are pretreated by S-transform in order to separate fault waveform from the normal one. And voltage amplitude phase data are calculated at the same time. Moreover, two sets of data are subtracted and the difference is used as the initial data source after phase-to-mode conversion and is input into the fault location characteristic function. Finally, the optimal solution of the function is obtained by PSO though the ability of global searching to determine the fault location. In conclusion, the simulation results show that the proposed method can accurately locate faults and provide more abundant and visualized fault information.