Autotransformer (AT) all-paralleling feeding systems have been widely used in high-speed railways in China. At present, short circuit faults in traction networks are mainly divided into three types, such as T-R, F-R and T-F. When permanent faults occur on traction power supply network, all parallel AT feeding systems are changed into direct power supply mode. If the fault is a compound fault, i.e., T-R-F fault, the traditional fault location based on reactance-distance method will have a large error. Formula of measuring reactance in a compound fault was deduced and fault location errors of a compound fault in direct power supply mode were analyzed in this paper. And then, a new correction scheme was proposed under the existing conditions. MATLAB/Simulink simulation results show that there is almost no error in the correction results under different transition resistance and fault distance.
Correction Scheme and Error Analysis of Compound Fault Location in Direct Power Supply Mode of High-Speed Railway Traction Network
Lect. Notes Electrical Eng.
International Conference on Electrical and Information Technologies for Rail Transportation ; 2019 ; Qingdao, China October 25, 2019 - October 27, 2019
Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019 ; Kapitel : 31 ; 325-333
2020-04-04
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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