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http://dx.doi.org/10.5207/JIEIE.2003.17.6.095

A Study on the Application of the DVR in AC Electric Traction System  

최준호 (전남대학교 전기공학과)
김태수 (철도청 전기본부)
김재철 (숭실대전기공학과)
문승일 (서울대학교 전기컴퓨터공학부)
남해곤 (전남대학교 전기공학과)
정일엽 (서울대학교 대학원 전기공학부)
박성우 (서울대학교 대학원 전기공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.17, no.6, 2003 , pp. 95-104 More about this Journal
Abstract
The electric traction systems are quite differ from general power systems which is single-phase and heavy load. Therefore, there are inevitably power quality problems such as steady state or transient voltage drop, voltage imbalance and harmonic distortion. Among these problems, since steady-state volatge drop is the one of most important factor in electric power quality, many researches about on the compensation of volatge drop by using SVC(Static Var Compensator) and/or STACOM(Static Compensator) have been studied and proposed Also, it is expected that transient voltage drop(voltage sag) could affect the control and safety of high speed traction load. In this paper, voltage sag compensation of AT(Auto Transformer) feeding system are studied The detailed transient models of utility source, scott transformer, AT, and traction load are estabilished. The application of DVR(Dynamic Voltage Restorer) in electric traction system is proposed to compensate the voltage sag of traction network which is occured by the fault of utility source. It can be shown that application of the DVR in electric traction system is very useful to compensate the volatge sag from the result of related simulation works.
Keywords
electric traction system; AT(auto transformer); voltage sag; DVR(dynamic voltage restorer); PSCAD/EMTDC;
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