An evaluation method of power quality about electrified railways connected to power grid based on PSCAD/EMTDC

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Liang, Weibin^1 ; Ouyang, Sen^1 ; Huang, Xiang^1 ; Su, Weijian^1

School of Electric Power, South China University of Technology, Guangzhou

510640, China^1

关键词: Electrified railways;    Equivalent model;    Harmonic characteristics;    Harmonic sources;    Modeling process;    Power characteristic;    Power grids;    Three dimensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012050/pdf
DOI  :  10.1088/1757-899X/199/1/012050

来源: IOP

【 摘 要 】

The existing modeling process of power quality about electrified railways connected to power grid is complicated and the simulation scene is incomplete, so this paper puts forward a novel evaluation method of power quality based on PSCAD/ETMDC. Firstly, a model of power quality about electrified railways connected to power grid is established, which is based on testing report or measured data. The equivalent model of electrified locomotive contains power characteristic and harmonic characteristic, which are substituted by load and harmonic source. Secondly, in order to make evaluation more complete, an analysis scheme has been put forward. The scheme uses a combination of three-dimensions of electrified locomotive, which contains types, working conditions and quantity. At last, Shenmao Railway is taken as example to evaluate the power quality at different scenes, and the result shows electrified railways connected to power grid have significant effect on power quality.