Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System

Jixing Sun (), Kaixuan Hu, Yongzhi Fan, Jiyong Liu, Shengchun Yan and Yan Zhang
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Jixing Sun: School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun in Haidian District, Beijing 100044, China
Kaixuan Hu: School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun in Haidian District, Beijing 100044, China
Yongzhi Fan: School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun in Haidian District, Beijing 100044, China
Jiyong Liu: School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun in Haidian District, Beijing 100044, China
Shengchun Yan: Shuohuang Railway Development Co., Ltd. of National Energy, Cangzhou 062350, China
Yan Zhang: Shuohuang Railway Development Co., Ltd. of National Energy, Cangzhou 062350, China

Energies, 2022, vol. 15, issue 24, 1-21

Abstract: High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which accelerates the service life of the vehicle-mounted equipment and is likely to cause insulation failures. For the above-mentioned problems, the operating overvoltage characteristics of high-speed EMU were obtained by traction substation-catenary-EMUs system (SCES) analysis and experiments, thus deriving the influences of the closed phase angle and the residual magnetism of the vehicle-mounted transformer on operating overvoltage. The results showed that the voltage phase of the catenary significantly affected the operating overvoltage, and the closed switching overvoltage was small at 0–40°, 140–210° and 320–350°. The voltage on the primary side of the vehicle-mounted transformer was 60.78 kV, with the transient impact of high-frequency oscillation overvoltage of 22.71 kV, and an initial period of oscillation of 0.01 ms. Then, the period became longer, and it took 0.5 ms for the high-frequency oscillation from attenuation to disappearance. Finally, a scheme of series reactance suppression devices was proposed to protect vehicle-mounted voltage transformers. This work is to provide data support for the insulation design and system protection of a traction power supply system.

Keywords: inrush current; high-speed train; over voltage; traction power supply system; vehicle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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