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Volume 15
Issue 21
10.3390/en15217865
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Article

Analyzing Optimal Battery Sizing in Microgrids Based on the Feature Selection and Machine Learning Approaches

by
Hajra Khan
1,†,
Imran Fareed Nizami
1,†,
Saeed Mian Qaisar
2,3,*,†,
Asad Waqar
1,*,†,
Moez Krichen
4 and
Abdulaziz Turki Almaktoom
5,*
1
Department of Electrical Engineering, Bahria University, Islamabad 44000, Pakistan
2
Electrical and Computer Engineering Department, Effat University, Jeddah 22332, Saudi Arabia
3
Communication and Signal Processing Lab, Energy and Technology Center, Effat University, Jeddah 22332, Saudi Arabia
4
Department of Information Technology, Faculty of Computer Science and Information Technology (FCSIT), Al-Baha University, Al-Baha 65528, Saudi Arabia
5
Supply Chain Management Department, Effat University, Jeddah 22332, Saudi Arabia
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Energies 2022, 15(21), 7865; https://doi.org/10.3390/en15217865
Submission received: 2 September 2022 / Revised: 22 September 2022 / Accepted: 13 October 2022 / Published: 24 October 2022
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Abstract

Microgrids are becoming popular nowadays because they provide clean, efficient, and lowcost energy. Microgrids require bulk storage capacity to use the stored energy in times of emergency or peak loads. Since microgrids are the future of renewable energy, the energy storage technology employed should be optimized to provide power balancing. Batteries play a variety of essential roles in daily life. They are used at peak hours and during a time of emergency. There are different types of batteries i.e., lithium-ion batteries, lead-acid batteries, etc. Optimal battery sizing of microgrids is a challenging problem that limits modern technologies such as electric vehicles, etc. Therefore, it is imperative to assess the optimal size of a battery for a particular system or microgrid according to its requirements. The optimal size of a battery can be assessed based on the different battery features such as battery life, battery throughput, battery autonomy, etc. In this work, the mixed-integer linear programming (MILP) based newly generated dataset is studied for computing the optimal size of the battery for microgrids in terms of the battery autonomy. In the considered dataset, each instance is composed of 40 attributes of the battery. Furthermore, the Support Vector Regression (SVR) model is used to predict the battery autonomy. The capability of input features to predict the battery autonomy is of importance for the SVR model. Therefore, in this work, the relevant features are selected utilizing the feature selection algorithms. The performance of six best-performing feature selection algorithms is analyzed and compared. The experimental results show that the feature selection algorithms improve the performance of the proposed methodology. The Ranker Search algorithm with SVR attains the highest performance with a Spearman’s rank-ordered correlation constant of 0.9756, linear correlation constant of 0.9452, Kendall correlation constant of 0.8488, and root mean squared error of 0.0525.
Keywords: battery autonomy; battery size; feature selection battery autonomy; battery size; feature selection

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MDPI and ACS Style

Khan, H.; Nizami, I.F.; Qaisar, S.M.; Waqar, A.; Krichen, M.; Almaktoom, A.T. Analyzing Optimal Battery Sizing in Microgrids Based on the Feature Selection and Machine Learning Approaches. Energies 2022, 15, 7865. https://doi.org/10.3390/en15217865

AMA Style

Khan H, Nizami IF, Qaisar SM, Waqar A, Krichen M, Almaktoom AT. Analyzing Optimal Battery Sizing in Microgrids Based on the Feature Selection and Machine Learning Approaches. Energies. 2022; 15(21):7865. https://doi.org/10.3390/en15217865

Chicago/Turabian Style

Khan, Hajra, Imran Fareed Nizami, Saeed Mian Qaisar, Asad Waqar, Moez Krichen, and Abdulaziz Turki Almaktoom. 2022. "Analyzing Optimal Battery Sizing in Microgrids Based on the Feature Selection and Machine Learning Approaches" Energies 15, no. 21: 7865. https://doi.org/10.3390/en15217865

APA Style

Khan, H., Nizami, I. F., Qaisar, S. M., Waqar, A., Krichen, M., & Almaktoom, A. T. (2022). Analyzing Optimal Battery Sizing in Microgrids Based on the Feature Selection and Machine Learning Approaches. Energies, 15(21), 7865. https://doi.org/10.3390/en15217865

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