Affiliation:
1. Institute of Control and Industrial Electronics, Warsaw University of Technology, 00-662 Warsaw, Poland
Abstract
The use of renewable energy sources (RES) such as wind and solar power is increasing rapidly to meet growing electricity demand. However, the intermittent nature of RES poses a challenge to grid stability. Energy storage (ES) technologies offer a solution by adding flexibility to the system. With the emergence of distributed energy resources (DERs) and the transition to prosumer-based electricity systems, energy management systems (EMSs) have become crucial to coordinate the operation of different devices and optimize system efficiency and functionality. This paper presents an EMS for a residential photovoltaic (PV) and battery system that addresses two different functionalities: energy cost minimization, and self-consumption maximization. The proposed EMS takes into account the operational requirements of the devices and their lower-level controllers. A genetic algorithm (GA) is used to solve the optimization problems, ensuring a desired State of Charge (SOC) at the end of the day based on the next day forecast, without discretizing the SOC transitions allowing a continuous search space. The importance of adhering to the manufacturer’s operating specification to avoid premature battery degradation is highlighted, and a comparative analysis is performed with a simple tariff-driven solution, evaluating total cost, energy exchange, and peak power. Tests are carried out in a detailed model, where Power Electronics Converters (PECs) and their local controllers are considered together with the EMS.
Funder
European Union’s Horizon 2020 research and innovation program
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
Reference41 articles.
1. Fetting, C. (2020). The European Green Deal, ESDN Office. Technical Report.
2. Utility-Scale Energy Storage Systems: Converters and Control;Stynski;IEEE Industrial Electron. Mag.,2020
3. Transactive Energy: Power Electronics Challenges;Martins;IEEE Power Electron. Mag.,2022
4. García Vera, Y.E., Dufo-López, R., and Bernal-Agustín, J.L. (2019). Energy Management in Microgrids with Renewable Energy Sources: A Literature Review. Appl. Sci., 9.
5. Modified PSO Algorithm for Real-Time Energy Management in Grid-Connected Microgrids;Hossain;Renew. Energy,2019