TITLE:
Study on Electromagnetic Transient Condition of EMU Passing by Phase-separation with Electric Load in High-speed Railway
AUTHORS:
Xiaoxu Guo, Jianzhong Wei, Long Xu, Shibin Gao, Zhengqing Han
KEYWORDS:
Passing by Phase-separation with Electric Load; Electromagnetic Transient Process; Overvoltage; Impact Current; Traction Power Supply System
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
13,
2013
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.