Research on Geoelectric Field of Metro Stray Current Based on ANSYS

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Yitong, Liu^1 ; Weili, Wu^1 ; Wenmei, Chen^1

Xi'An University of Science and Technology, Xi'an

710000, China^1

关键词: Ansys finite elements;    Geoelectric;    Main transformer;    Major factors;    Stray current;    Traction current;    Urban power grids;    Urban rail transit;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012145/pdf
DOI  :  10.1088/1757-899X/486/1/012145

来源: IOP

【 摘 要 】

The stray current generated by urban rail transit has become one of the major factors in the DC bias phenomenon of the main transformer of urban power grid. The electromagnetic field finite element method is used to theoretically calculate and analysed the geoelectric field of metro stray current. According to the mathematical model, the ANSYS finite element software is used to simulated and analysed the current under different stray currents. The results show that with the value of traction current increases, the stray current flowing into the ground increases, and the strength of the formed electric field increases.