Open Access

ARTICLE

Recent Advancements in the Optimization Capacity Configuration and Coordination Operation Strategy of Wind-Solar Hybrid Storage System

by Hongliang Hao¹, Caifeng Wen^2,3, Feifei Xue^2,*, Hao Qiu¹, Ning Yang², Yuwen Zhang¹, Chaoyu Wang¹, Edwin E. Nyakilla¹

1 Department of New Energy Storage, Peking University Ordos Research Institute of Energy, Ordos, 017010, China
2 School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010080, China
3 Key Laboratory of Wind Energy and Solar Energy Utilization Technology, Inner Mongolia University of Technology, Hohhot, 010051, China

* Corresponding Author: Feifei Xue. Email:

Energy Engineering 2025, 122(1), 285-306. https://doi.org/10.32604/ee.2024.057720

Received 26 August 2024; Accepted 28 October 2024; Issue published 27 December 2024

Abstract

Present of wind power is sporadically and cannot be utilized as the only fundamental load of energy sources. This paper proposes a wind-solar hybrid energy storage system (HESS) to ensure a stable supply grid for a longer period. A multi-objective genetic algorithm (MOGA) and state of charge (SOC) region division for the batteries are introduced to solve the objective function and configuration of the system capacity, respectively. MATLAB/Simulink was used for simulation test. The optimization results show that for a 0.5 MW wind power and 0.5 MW photovoltaic system, with a combination of a 300 Ah lithium battery, a 200 Ah lead-acid battery, and a water storage tank, the proposed strategy reduces the system construction cost by approximately 18,000 yuan. Additionally, the cycle count of the electrochemical energy storage system increases from 4515 to 4660, while the depth of discharge decreases from 55.37% to 53.65%, achieving shallow charging and discharging, thereby extending battery life and reducing grid voltage fluctuations significantly. The proposed strategy is a guide for stabilizing the grid connection of wind and solar power generation, capability allocation, and energy management of energy conservation systems.

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Keywords

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