Study onFault Location ofMulti Measuring Points Traveling Wave Method Based on IHHT in All Parallel AT Traction Network
Xiong Liebin1, Wu Gaohua1, Wang Zhiyang2
1. School of Electrical Engineering Southwest Jiaotong University Chengdu 611756 China; 2. School of Automation Guangdong University of Technology Guangzhou 510006 China
Abstract：Aiming at the current problem that the all parallel AT traction network line parameters are not uniform and the traction power supply system is structurally changed due to faults, which makes the insufficient accuracy of fault location. The traveling wave method is applied to the fault location of the traction network in this study,considering the change of the electrical parameters of the traction network and the traveling wave dispersion effect would cause the traveling wave velocity unstable, this paper proposes a fault location method based on multimeasuring points. This method can effectively identify the voltage traveling wave head by serially inserting a high frequency trap between the transverse lines, and then utilize the improved Hilbert-Huang transform to capture the traveling wave head,finally on the basis of the multimeasuring points equationobtainedfault location results. According to the simulation results of Matlab/Simulink, the proposed multi measuring points algorithm is almost independent of the wave velocity and is not affected by changes in the structure and parameters of the traction network, it has higher accuracy than the traditional traction network fault location algorithm.
熊列彬, 吴高华, 王志洋. 基于IHHT的多测点行波法故障测距在全并联AT牵引网中的研究[J]. 电工技术学报, 2019, 34(15): 3244-3252.
Xiong Liebin, Wu Gaohua, Wang Zhiyang. Study onFault Location ofMulti Measuring Points Traveling Wave Method Based on IHHT in All Parallel AT Traction Network. Transactions of China Electrotechnical Society, 2019, 34(15): 3244-3252.
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2019, Vol. 34 
