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Energies 2017, 10(7), 932; https://doi.org/10.3390/en10070932

Harmonic Distortion Minimization in Power Grids with Wind and Electric Vehicles

1
Midcontinent Independent System Operator, Eagan, MN 55122, USA
2
Department of Electrical and Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA
3
Department of Electrical and Electronics Engineering, Istanbul Kemerburgaz University, Istanbul 34000, Turkey
4
Department of Electrical and Computer Engineering, University of Texas at El Paso, El Paso, TX 79901, USA
*
Author to whom correspondence should be addressed.
Academic Editor: K.T. Chau
Received: 1 March 2017 / Revised: 12 May 2017 / Accepted: 25 June 2017 / Published: 5 July 2017
(This article belongs to the Special Issue Smart Microgrids: Developing the Intelligent Power Grid of Tomorrow)
View Full-Text   |   Download PDF [851 KB, uploaded 5 July 2017]   |  

Abstract

Power-electronic interfacing based devices such as wind generators (WGs) and electrical vehicles (EVs) cause harmonic distortions on the power grid. Higher penetration and uncoordinated operation of WGs and EVs can lead to voltage and current harmonic distortions, which may exceed IEEE limits. It is interesting to note that WGs and EVs have some common harmonic profiles. Therefore, when EVs are connected to the grid, the harmonic pollution EVs impart onto the grid can be reduced to some extent by the amount of wind power injecting into the grid and vice versa. In this context, this work studies the impact of EVs on harmonic distortions and careful utilization of wind power to minimize the distortions in distribution feeders. For this, a harmonic unbalanced distribution feeder model is developed in OpenDSS and interfaced with Genetic Algorithm (GA) based optimization algorithm in MATLAB to solve optimal harmonic power flow (OHPF) problems. The developed OHPF model is first used to study impact of EV penetration on current/voltage total harmonic distortions (THDs) in distribution grids. Next, dispatch of WGs are found at different locations on the distribution grid to demonstrate reduction in the current/voltage THDs when EVs are charging. View Full-Text
Keywords: electric vehicles; wind generators; harmonics; distribution grids; optimization electric vehicles; wind generators; harmonics; distribution grids; optimization
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Misra, R.; Paudyal, S.; Ceylan, O.; Mandal, P. Harmonic Distortion Minimization in Power Grids with Wind and Electric Vehicles. Energies 2017, 10, 932.

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