Tracking-dispatch of a combined wind-storage system based on model predictive control and two-layer fuzzy control strategy

• Published in: Protection and control of modern power systems Vol. 8; no. 1; pp. 58 - 16
• Main Authors: Yang, Jingyu, Yang, Tongguang, Luo, Longfu, Peng, Li
• Format: Journal Article
• Language: English
• Published: Singapore Springer Nature Singapore 01.12.2023; Springer Nature B.V; SpringerOpen
• Subjects: Charging; Deviation; Discharge; Electrical Machines and Networks; Energy; Energy storage; Energy storage system; Energy Systems; Fuzzy control; Model predictive control; Multitasking; Objective function; Original Research; Power Electronics; Predictive control; Renewable and Green Energy; Renewable energy; Service life; State of charge; Storage systems; Strategy; Track planned output; Tracking; Two-layer fuzzy control; Wind farms; Wind power; Model predictive control; Track planned output; Wind power; Energy storage system; Two-layer fuzzy control
• ISSN: 2367-2617; 2367-0983
• DOI: 10.1186/s41601-023-00334-6

To maximize improving the tracking wind power output plan and the service life of energy storage systems (ESS), a control strategy is proposed for ESS to track wind power planning output based on model prediction and two-layer fuzzy control. First, based on model predictive control, a model with deviations of grid-connected power from the planned output and the minimum deviation of the remaining capacity of the ESS from the ideal value is established as the target. Then, when the grid-connected power exceeds the allowable deviation band of tracking, the weight coefficients in the objective function are adjusted by introducing the first layer of fuzzy control rules, combining the state of charge (SOC) of the ESS with the dynamic tracking demand of the planned value of wind power. When the grid-connected power is within the tracking allowable deviation band, the second layer of fuzzy control rules is used to correct the charging and discharging power of the ESS to improve its ability to track the future planned deviation while not crossing the limit. By repeatedly correcting the charging and discharging power of the ESS, its safe operation and the multitasking execution of the wind power plan output tracking target are ensured. Finally, taking actual data from a wind farm as an example, tests on a simulation platform of a combined wind-storage power generation system verify the feasibility and superiority of the proposed control strategy.