An Enhanced Rule-Based Approach for Optimizing Energy Costs and Battery Health in Microgrid Systems

Abstract

Renewable energy resource systems have increased significantly as a result of the transition to microgrids. These systems require an effective energy management system (EMS) in order to optimize the flow of energy from the different sources. This paper proposes an enhanced rule-based EMS (EnRB-EMS) for a grid connected photovoltaic (PV)-battery system, in order to optimize the operation of the system to meet the escalating energy demand, minimize the cost of electricity, and increase the battery life by improving the power quality. The proposed strategy is based on a set of real-time information, such as the load demand, the state of charge (SoC) of the battery, and the cost of electricity. The performance of the proposed strategy is evaluated under different scenarios, demonstrating the effectiveness of the proposed strategy in achieving optimal energy management, reducing the electricity cost, and increasing the battery life.

Keywords:

• energy management system
• rule-based algorithm
• PV system
• microgrid
• energy cost
• batteries

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Sid Ahmed Bourezig

Sid Ahmed Bourezig was born in 1993 in Sidi-Bel-Abbès, Algeria. He received his engineering degree and master’s degree in electrical engineering from the Ecole Militaire Polytechnique, Algiers, Algeria, in 2017. Currently, he is completing his PhD studies at the Ecole Militaire Polytechnique, Algiers, Algeria. His recent research focuses on renewable energies, energy management, and the control of grid-connected converters.

Abdeldjabar Benrabah

Abdeldjabar Benrabah was born in Skikda, Algeria, in 1988. He received the Engineering degree in electrical engineering from the Ecole Militaire Polytechnique, Algiers, Algeria, in 2012, and the Ph.D. degree in electrical engineering from the Harbin Institute of Technology, Harbin, China, in 2018. He is currently with the Electrical Engineering Department, Ecole Militaire Polytechnique, as a Post-Doctoral Research Fellow. His research interests include the control of grid connected converters, multi-terminal VSC-HVdc systems, renewable energy, and microgrids. He was a recipient of the Chinese Government Outstanding International Student Scholarship in 2017.

Farid Khoucha

Farid Khoucha received the BSc, the MSc, and the PhD degrees all in Electrical Engineering, from the Ecole Militaire Polytechnique, Algiers, Algeria, in 1998, 2003, 2012, respectively. In 2000, he joined the Ecole Militaire Polytechnique, Algiers, Algeria as a Teaching Assistant. Since January 2013, he is an Associate Professor. His current research interests include electric and hybrid vehicle control and energy management, renewable energy, smart grids, MVDC and HVDC systems, modular multilevel converter.

Khelifa Benmansour

Khelifa Benmansour received his BEng (Hons) degree in Power Systems Engineering and his Master’s degree in Electrical Engineering from the Ecole Nationale Polytechnique, (ENP, EMP) Algiers, Algeria, in 1997 and 1999, respectively. He received his PhD degree in Control Systems Engineering from Ecole Nationale Polytechnique ENP, Algeria in 2006. He is currently a Professor at the University of Medea, (Algeria). His main research interest includes the control of nonlinear systems and sliding mode control and observers, fault detection and machine speed sensors, drives and the analysis and multi-cellular converters and hybrid systems.

Mohamed Benbouzid

Mohamed Benbouzid completed his Ph.D. in electrical at the National Polytechnic Institute of Grenoble, Grenoble, France, in 1994. He further earned his Habilitation à Diriger des Recherches degree from the University of Amiens, Amiens, France, in 2000. Following the completion of his Ph.D., Dr. Benbouzid joined the University of Amiens, where he held the position of Associate Professor in electrical engineering. Since September 2004, he has been affiliated with the University of Brest, Brest, France, where he currently serves as a Full Professor in electrical engineering. Additionally, he holds the distinguished positions of a Distinguished Professor and a 1000 Talent Expert at the Shanghai Maritime University in Shanghai, China. Prof. Benbouzid primary research interests and expertise include control of electric machines, variable-speed drives for traction, propulsion, and renewable energy applications, and fault diagnosis of electric machines. Prof. Benbouzid is an IEEE Fellow and a Fellow of the IET. He is the Editor-in-Chief of the International Journal on Energy Conversion and the Applied Sciences (MDPI) Section on Electrical, Electronics and Communications Engineering. He is a Subject Editor for the IET Renewable Power Generation.