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손호익(Ho-ik Son),유형준(Hyeong-Jun Yoo),김학만(Hak-Man Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.12
Since electric railway load is variable largely due to starting and braking characteristics as well as various operation patterns, load modeling is not easy but complicated. For this reason, a simple technique for modeling of electric railway load of is required to analyze the AC substation system of electric railway. In this paper, a modeling technique of converter-based electric railway load is proposed and is tested using nonlinear loads on Matlab/Simulink.
BESS 모델링 및 전기철도 급전계통에의 전압보상 적용
유형준(Hyeong-Jun Yoo),손호익(Ho-Ik Son),김학만(Hak-Man Kim) 대한전기학회 2013 전기학회논문지 Vol.62 No.3
The load of electric railroad can generate voltage fluctuation in the electric railway system because of high speed of the electric railroad and frequent movement and stop. This voltage fluctuation of electric railway system can cause not only voltage imbalance but also harmonic in the utility grid. Therefore the electric railroad system is in need of the reactive power compensation, such as static synchronous compensator (STATCOM) and static var compensator (SVC). Especially, the battery energy storage system (BESS) can control the real and reactive power at the same time. In this paper, the electric railway system using BESS has been modeled to show its voltage compensation effect using Matlab/Simulink.