Study on Electromagnetic Transient Condition of EMU Passing by Phase-separation with Electric Load in High-speed Railway

Xiaoxu Guo, Jianzhong Wei, Long Xu, Shibin Gao, Zhengqing Han

School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China.

DOI: 10.4236/epe.2013.54B202                

Abstract

Aiming at the complex electromagnetic transient process of EMU passing by phase-separation with electric load in high-speed railway, mechanism of overvoltage caused by switching off, overvoltage caused by switching on and impact current is analyzed systematically in this article. π-type equivalent circuit of feeding section is put forward in the analysis of overvoltage mechanism. Overvoltage and overcurrent model of passing by phase-separation with electric load are also built. Correctness of mechanism was validated by simulation. In addition, the methods to solve the influence on substations, transformers and protection devices in this process are put forward, which provides a new idea on passing by phase-separation with electric load technology.

Keywords

Passing by Phase-separation with Electric Load; Electromagnetic Transient Process; Overvoltage; Impact Current; Traction Power Supply System

Conflicts of Interest

The authors declare no conflicts of interest.

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