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

Author

Listed:
  • 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
    Shuohuang Railway Development Co., Ltd. of National Energy, Cangzhou 062350, 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)

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.

Suggested Citation

  • Jixing Sun & Kaixuan Hu & Yongzhi Fan & Jiyong Liu & Shengchun Yan & Yan Zhang, 2022. "Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System," Energies, MDPI, vol. 15(24), pages 1-21, December.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:24:p:9308-:d:997515
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    Cited by:

    1. Jixing Sun & Kun Zhang & Jiyong Liu & Kaixuan Hu & Jindong Huo & Shengchun Yan & Yan Zhang, 2023. "Mechanism of Low-Frequency Oscillation When Electric Multiple Units Pass Neutral Zone, and Suppression Method," Energies, MDPI, vol. 16(15), pages 1-15, August.

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