Compensation of Instantaneous Voltage Drop at AC Railroad System with Single-Phase Distributed STATCOM

Kim, Jun-Sang; Lee, Seung-Hyuk; Kim, Jin-O; Lee, Jun-Kyung; Jung, Hunsang

doi:10.5207/jieie.2007.21.1.042

Cited by 3 publications

(1 citation statement)

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“…DC microgrids do not encounter the same problems, but a disadvantage is that the specification of the operating voltage is not set, and protection is difficult. An advantage is that the power generated by each power source is two times less than the power conversion of DC-DC-AC or AC-DC-AC; therefore, the installation cost and system loss are small, and only the voltage of the DC bus is managed [3]. Research on DC microgrids has recently attracted considerable interest because DC power sources are needed for the fast-paced operations of information communication equipment and data centers [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Operation method of DC micro grid using power control

Choi

et al. 2019

Journal of International Council on Electrical Engineering

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Microgrids are small-scale power grids that combine a renewable energy source with an energy storage system (ESS) to power loads. They are operated in connection with commercial power grids and operate independently in mountainous areas where commercial power grids are not provided. Microgrids are mainly classified into AC and DC types. Independently operating microgrids typically use diesel generators to supply power to customers. However, the use of distributed generators, such as solar power, wind turbines, and ESSs, is increasing worldwide as conventional fossil-fueled power systems face the problem of gradual depletion of resources. DC microgrids are being actively studied because they require only voltage control, and most distributed generators produce DC power. In particular, the voltage of the DC bus must be maintained using ESSs to maintain the voltage of the microgrids. In this study, we propose two stable power supplies, namely, MAIN ESS for voltage control in DC microgrids and SUB ESS for power supply of loads, and a stable operation by switching a voltage-controlled ESS unit at the MAIN ESS dropout. We demonstrate that DC microgrids can be modeled and operated stably throughout PSCAD/EMTDC.

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Section: Introductionmentioning

confidence: 99%

Operation method of DC micro grid using power control

Choi

et al. 2019

Journal of International Council on Electrical Engineering

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Power Quality Analysis of Autotransformer-fed Railway System Considering Installation Position of Shunt Active Power Filter

Han¹,

Park²,

Song³

2011

Journal of the Korean Institute of Illuminating and Electrical

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BESS Modeling and Application to Voltage Compensation of Electric Railway System

Yoo¹,

Son²,

Kim³

2013

The Transactions of The Korean Institute of Electrical Engineer

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-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.

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Compensation of Instantaneous Voltage Drop at AC Railroad System with Single-Phase Distributed STATCOM

Cited by 3 publications

References 1 publication

Operation method of DC micro grid using power control

Operation method of DC micro grid using power control

Power Quality Analysis of Autotransformer-fed Railway System Considering Installation Position of Shunt Active Power Filter

BESS Modeling and Application to Voltage Compensation of Electric Railway System

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