Abstract：Considering the problem that the active power output from storage modules cannot be reasonably distributed in a multi-storage AC microgrid, this paper proposes an improved droop control strategy based on the state of charge of the energy storage module, on the basis of stabilizing the frequency of the microgrid. Firstly, by constructing a power-exponential function model of the energy storage state of charge and droop coefficient, this control strategy enables each energy storage module to adaptively adjust the output active power according to its own state of charge, which ultimately achieves the state of charge equilibrium. Secondly, small signal analysis is used to analyze the stability of the strategy. Finally, the effectiveness of the proposed strategy is verified by Matlab/Simulink simulations and semi-physical experiments.
王宏东, 邓桂瑶. 基于荷电状态的多储能微电网改进下垂控制策略[J]. 电气技术, 2025, 26(4): 29-36.
WANG Hongdong, DENG Guiyao. Improved droop control strategy for multi-storage microgrids based on state of charge. Electrical Engineering, 2025, 26(4): 29-36.
2025, Vol. 26 
