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Energies 2018, 11(1), 52; doi:10.3390/en11010052

Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation

Department of Electrical Engineering, Hanyang University, Seoul 133-791, Korea
National Renewable Energy Laboratory, Golden, CO 80401, USA
Author to whom correspondence should be addressed.
Received: 29 October 2017 / Revised: 7 December 2017 / Accepted: 20 December 2017 / Published: 27 December 2017
(This article belongs to the Special Issue Distributed and Renewable Power Generation)


This paper proposes a method for the coordinated control of a wind turbine and an energy storage system (ESS). Because wind power (WP) is highly dependent on wind speed, which is variable, severe stability problems can be caused in power systems, especially when the WP has a high penetration level. To solve this problem, many power generation corporations or grid operators have begun using ESSs. An ESS has very quick response and good performance for reducing the impact of WP fluctuation; however, its installation cost is high. Therefore, it is important to design the control algorithm by considering both the ESS capacity and WP fluctuation. Thus, we propose a control algorithm to mitigate the WP fluctuation by using the coordinated control between the wind turbine and the ESS by considering the ESS capacity and the WP fluctuation. Using de-loaded control, according to the WP fluctuation and ESS capacity, we can expand the ESS lifespan and improve grid reliability by avoiding the extreme value of state of charge (SoC) (i.e., 0 or 1 pu). The effectiveness of the proposed method was validated via MATLAB/Simulink by considering a small power system that includes both a wind turbine generator and conventional generators that react to system frequency deviation. We found that the proposed method has better performance in SoC management, thereby improving the frequency regulation by mitigating the impact of the WP fluctuation on the small power system. View Full-Text
Keywords: wind power fluctuation; energy storage system (ESS); state of charge (SoC) management; coordinated control wind power fluctuation; energy storage system (ESS); state of charge (SoC) management; coordinated control

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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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MDPI and ACS Style

Kim, C.; Muljadi, E.; Chung, C.C. Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation. Energies 2018, 11, 52.

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