Optimal Control of an Energy-Storage System in a Microgrid for Reducing Wind-Power Fluctuations

Rahmat Aazami, Omid Heydari, Jafar Tavoosi, Mohammadamin Shirkhani, Ardashir Mohammadzadeh and Amir Mosavi
Additional contact information
Rahmat Aazami: Department of Electrical Engineering, Ilam University, Ilam 69315-516, Iran
Omid Heydari: Department of Electrical Engineering, Ilam University, Ilam 69315-516, Iran
Jafar Tavoosi: Department of Electrical Engineering, Ilam University, Ilam 69315-516, Iran
Mohammadamin Shirkhani: Department of Electrical Engineering, Ilam University, Ilam 69315-516, Iran
Ardashir Mohammadzadeh: Department of Electrical Engineering, University of Bonab, Bonab 55517-61167, Iran
Amir Mosavi: Faculty of Civil Engineering, Technische Universität Dresden, 01067 Dresden, Germany

Sustainability, 2022, vol. 14, issue 10, 1-14

Abstract: In conventional low-voltage grids, energy-storage devices are mainly driven by final consumers to correct peak consumption or to protect against sources of short-term breaks. With the advent of microgrids and the development of energy-storage systems, the use of this equipment has steadily increased. Distributed generations (DGs), including wind-power plants as a renewable energy source, produces vacillator power due to the nature of variable wind. Microgrids have output power fluctuations, which can cause devastating effects such as frequency fluctuations. Storage can be used to fix this problem. In this paper, a grid-connected wind turbine and a photovoltaic system are investigated considering the atmospheric conditions and wind-speed variations, and a control method is proposed. The main purpose of this paper is to optimize the capacity of energy-storage devices to eliminate power fluctuations in the microgrid. Finally, the conclusion shows that, in microgrids with supercapacitors, the optimal capacity of microgrid supercapacitors is determined. This method of control, utilizing the combined energy-storage system of the battery supercapacitor, in addition to reducing the active power volatility of the wind turbine and photovoltaic generation systems, also considers the level of battery protection and reduction in reactive-power fluctuations. In the proposed control system, the DC link in the energy-storage systems is separate from most of the work conducted, which can increase the reliability of the whole system. The simulations of the studied system are performed in a MATLAB software environment.

Keywords: distributed generation (DG); wind turbine (WT); power fluctuation; photovoltaic system; microgrid (MG); smart gride; renewable energies; artificial intelligence; energy; optimal control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/10/6183/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/10/6183/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:10:p:6183-:d:819269

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().