Fault current analysis of DC electric railway feeding systems using superconducting power cables

Author

Qian, K. ; Ohsaki, Hiroyuki ; Tomita, Masaru

Author_Institution

Grad. Sch. of Eng., Univ. of Tokyo, Tokyo, Japan

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

261

Lastpage

266

Abstract

A superconducting power cable is a prospective application of high-temperature superconductors. Even though superconducting power cables have been developed worldwide mainly for the grid application, we focus on railway application of superconducting power cables. We have studied the fault current of DC electric railway feeding systems using superconducting power cables. MATLAB-Simulink electric circuit models based on a model railway line are constructed for numerical analysis of short-circuit and grounding faults. Influence of introducing superconducting power cables under different fault conditions is studied. Then the protections in an electric power system of railway are taken into account, and the feasibility for detaching the fault and protecting the system including the superconducting power cables are studied. Application of a superconducting fault current limiter is also studied and its potential is discussed.

Keywords

earthing; numerical analysis; power cables; power transmission protection; railway electrification; superconducting cables; superconducting fault current limiters; MATLAB-Simulink electric circuit models; dc electric railway feeding systems; electric power system protections; fault current analysis; grid application; grounding faults; high-temperature superconductors; numerical analysis; short-circuit faults; superconducting fault current limiter; superconducting power cables; Circuit faults; Fault currents; High-temperature superconductors; Integrated circuit modeling; Power cables; Substations; Superconducting cables;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013475

Filename

7013475