Characteristic Analysis of DC Electric Railway Systems with Superconducting Power Cables Connecting Power Substations

11th European Conference on Applied Superconductivity

Ohsaki, H.^1,2 ; Matsushita, N.^2 ; Koseki, T.^2 ; Tomita, M.^3

Department of Advanced Energy, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa

277-8561, Japan^1

Department of Electrical Engineering and Information Systems, School of Engineering, University of Tokyo, Hongo, Tokyo

113-8656, Japan^2

Railway Technical Research Institite, Kokubunji, Tokyo

185-8540, Japan^3

关键词: Characteristic analysis;    DC electric railways;    Electric circuit model;    Grid connections;    Matlab-Simulink software;    Output voltages;    Power substations;    Superconducting power cables;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/3/032035/pdf
DOI  :  10.1088/1742-6596/507/3/032035

来源: IOP

【 摘 要 】

The application of superconducting power cables to DC electric railway systems has been studied. It could leads to an effective use of regenerative brake, improved energy efficiency, effective load sharing among the substations, etc. In this study, an electric circuit model of a DC feeding system is built and numerical simulation is carried out using MATLAB-Simulink software. A modified electric circuit model with an AC power grid connection taken into account is also created to simulate the influence of the grid connection. The analyses have proved that a certain amount of energy can be conserved by introducing superconducting cables, and that electric load distribution and concentration among the substations depend on the substation output voltage distribution.