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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Impact of Energy Management of Electric Vehicles on Transient Voltage Stability of Microgrid

1
School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, 1037 Luoyu, Road, Wuhan, China
2
School of Electronics and Computer Engineering, Hanyang University, South Korea
3
School of Information and Communication Engineering, Sungkyunkwan University, South Korea
*
Author to whom correspondence should be addressed.
World Electr. Veh. J. 2015, 7(4), 577-588; https://doi.org/10.3390/wevj7040577
Published: 28 December 2015
PDF [608 KB, uploaded 18 May 2018]

Abstract

There is cause and effect relationship between increase in load due to increasing penetration of electric vehicles (EV) load that causes unbalanced conditions and affect the power quality such as voltage degradation and even damage the equipment if the system is not properly managed. This paper presents detailed review of energy supply and management in conjunction with load synchronization through EVs for maintaining transient voltage stability by providing reactive power support for the stability of power grid in vehicle-to-grid mode of operations. The energy management system is considered at different levels such as, stand-alone PV, stand-alone wind, stand-alone battery storage, stand-alone EV parking lot, residential feeder and commercial building feeders. First we proposed energy management algorithm, to limit the peak power drawn by EVs from distributed energy resources of microgrid, such that additional electrical resource will be transferred to resource constrained devices. The EVs negotiate based on their demand, priority and available electrical resource such that during higher electricity price the higher priority vehicles still require resource and perform uninterrupted operation. The transfer of electrical resource from one load device to another will help in reducing peak demand and improving the efficiency of the system. Secondly we proposed transient voltage stability margin index (TVSMI) to test the capability of EVs in contributing storage and supply services to the grid. The energy management control simulations are realized in DIgSILENT Power factory.
Keywords: distribution network reliability; energy management system; vehicle-to-grid (V2G); ancillary services distribution network reliability; energy management system; vehicle-to-grid (V2G); ancillary services
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Khalid, M.S.; Lin, X.; Zhuo, Y.; Kumar, R.; Rafique, M.K. Impact of Energy Management of Electric Vehicles on Transient Voltage Stability of Microgrid. World Electr. Veh. J. 2015, 7, 577-588.

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