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

doi:10.19595/j.cnki.1000-6753.tces.180834

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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.

Key words： All parallel AT power supply traveling wave fault location Hilbert-Huang transform EEMD decomposition multi measuring points fault traveling wave

Received: 15 May 2018 Published: 13 August 2019

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TM773

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	Xiong Liebin
	Wu Gaohua
	Wang Zhiyang

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Xiong Liebin,Wu Gaohua,Wang Zhiyang. Study onFault Location ofMulti Measuring Points Traveling Wave Method Based on IHHT in All Parallel AT Traction Network[J]. Transactions of China Electrotechnical Society, 2019, 34(15): 3244-3252.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180834 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I15/3244

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