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

作　　者：Xiaoxu Guo Jianzhong Wei Long Xu Shibin Gao Zhengqing Han 

机构地区：[1]School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China

出　　处：《Energy and Power Engineering》2013年第4期1061-1068,共8页能源与动力工程（英文）

摘　　要：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.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.

关 键 词：PASSING by PHASE-SEPARATION with Electric Load ELECTROMAGNETIC Transient Process OVERVOLTAGE Impact Current Traction Power Supply System 

分 类 号：R73[医药卫生—肿瘤]