Study on the Influence of Traction Current Phase on the Off-Line Electromagnetic Disturbance of Pantograph-Catenary at the Time of Pantograph-Catenary Separation

被引：0
|
作者：
Zhang M. [1 ]
Yang Y. [1 ,2 ]
Jin M. [2 ]
Hu M. [3 ]
Cao H. [1 ]
Liu S. [4 ]
机构：
[1] CRSC Research & Design Institute Group Co., Ltd., Beijing
[2] School of Traffic and Transportation, Shijiazhuang Tiedao University, Hebei, Shijiazhuang
[3] School of Information Science and Technology, Shijiazhuang Tiedao University, Hebei, Shijiazhuang
[4] Research Center for Electromagnetic Environmental Effects, Shijiazhuang Tiedao University., Hebei, Shijiazhuang
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2023年 / 44卷 / 02期
关键词：
Electric arc; Electromagnetic radiation; Escape work; Pantograph_catenary off-line; Phase control;
D O I：
10.3969/j.issn.1001-4632.2023.02.16
中图分类号：
学科分类号：
摘要：
The electromagnetic radiation caused by off-line arc of pantograph-catenary is one of the main electromagnetic disturbance sources in train control system. In order to study the influence of traction current phase on the off-line electromagnetic radiation characteristics of pantograph-catenary at the time of pantograph_ catenary separation, a phase-controllable simulation test platform for off-line arcing of low-voltage high current pantograph-catenary at the time of pantograph-catenary separation was built in the laboratory; and the time domain waveform data of arc voltage, arc current and electromagnetic radiation under different off-line phases were synchronously sampled. Through the fast Fourier transform (FFT) transformation of electromagnetic radiation time domain signal, the influence law of off-line phase on the frequency domain characteristics of the electromagnetic radiation signal is analyzed. The results show that the electromagnetic radiation at the time of arc starting and arc extinguishing is usually greater than that at the time of stable arcing during the off-line arcing discharge of pantograph-catenary. The center frequencies of the main frequency band of the electromagnetic radiation of pantograph-catenary off-line arcing are about 4, 7, 15 and 25 MHz, and the electromagnetic radiation intensity in different frequency bands is related to the traction current phase at the time of pantograph_ catenary separation. The peak value of 4 and 7 MHz disturbance signal appears when the current phase is 270° at the off-line time, the peak value of 15 MHz disturbance signal appears when the current phase is 234° at the off-line time, and the peak value of 25 MHz disturbance signal appears when the current phase is 306° at the off- line time. The randomness of the phase at the off-line time is one of the important reasons for the randomness of off-line interference fault of pantograph-catenary. The test results have certain reference and inspiration for building a test platform for fault recurrence and studying the opening and closing control strategy of circuit breaker when the train passes through the phase division area to reduce electromagnetic disturbance. © 2023 Chinese Academy of Railway Sciences. All rights reserved.
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页码：151 / 158
页数：7
相关论文
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