Research on Coordinated Control Strategy of DFIG-ES System Based on Fuzzy Control

Jianghong Chen, Teng Yuan (), Xuelian Li, Weiliang Li and Ximu Wang
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Jianghong Chen: College of Electrical and New Energy, Three Gorges University, Yichang 443002, China
Teng Yuan: College of Electrical and New Energy, Three Gorges University, Yichang 443002, China
Xuelian Li: College of Electrical and New Energy, Three Gorges University, Yichang 443002, China
Weiliang Li: College of Electrical and New Energy, Three Gorges University, Yichang 443002, China
Ximu Wang: College of Electrical and New Energy, Three Gorges University, Yichang 443002, China

Energies, 2023, vol. 16, issue 12, 1-12

Abstract: As the penetration rate of wind power systems is rising, which causes the overall system’s inertia to decline, the power system’s capacity to regulate frequency will be negatively affected. Therefore, this paper investigates the inertia control of doubly fed induction generation, and an energy storage system is installed in the wind farm to respond to the frequency deviation. First, a fuzzy control-based virtual inertia adaptive control strategy is presented. The goal of dynamic adjustment of the virtual inertia coefficient is realized by taking into account the uncertain factors of wind speed and frequency change rate. A recovery strategy based on the energy storage system’s level of charge is employed to prevent overcharging and over-discharging of the battery. Then, a weight factor based on frequency deviation is introduced to combine the droop output of the energy storage system with the virtual inertia output of the doubly fed induction generation, and the joint output mode of the wind storage system is determined in each stage of primary frequency regulation. Finally, the simulation verification is performed using the wind storage system simulation model created by MATLAB. The comparison results with other control methods prove that the proposed method is effective.

Keywords: DFIG; ES; fuzzy control; virtual inertia; SOC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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