Hybrid Energy Storage Based on Fuzzy Control Stabilizes Wind Power Fluctuations

doi:10.3969/j.issn.1008-0198.2023.06.019

Abstract

Abstract: To suppress fluctuation in wind power grid-connected power and improve energy storage output level the dynamic distribution model of wind power grid-connected power, the output control strategy of energy storage system, and the dynamic model of wind power coupled hybrid energy storage system are proposed, and the simulation is carried out through Matlab/Simulink. The results show that the two-stage filtering and fuzzy control can effectively improve the rationality of power distribution, the overall fluctuation degree of power decreased by 43.82% from 0.227 16 MW to 0.127 61 MW, the average frequency deviation decreased by 15.03%, from 0.090 53 Hz to 0.076 92 Hz, and the frequency variance decreased by 34.59%, which effectively improves the stability and safety of wind power grid-connection, reduces the number of battery cycles to a certain extent, and effectively prolongs the life of hybrid energy storage system.

Key words: hybrid energy storage, wind power grid-connected, control strategy, power distribution, evaluation indicators

CLC Number:

TM614
TM91

ZHAO Jianhong, DONG Xing, LIU Zhongwen, HAN Xu. Hybrid Energy Storage Based on Fuzzy Control Stabilizes Wind Power Fluctuations[J]. Hunan Electric Power, 2023, 43(6): 124-131.

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