Coordinated Control of Distributed BESS Based on MAS for Voltage Regulation in LV Distribution Network with High PV Penetration

An iterative coordination control strategy based on multi-agent systems (MAS) is suggested to handle the problem of voltage fluctuation during peak load periods and peak solar generation times in complex LV distribution networks with significant distributed PV penetration. Through MAS-based control strategy, distributed battery energy storage systems (BESSs) can be coordinated in a way that makes full use of the communication infrastructure while staying reliable in some events of communication failure. Moreover, without the need to obtain the information of complex LV distribution network topology and line impedance, this strategy resolves the voltage fluctuation problem based on the charge/discharge capability index of the BESS. To enhance distributed BESS's ability to regulate voltage in overcast weather, a charging strategy for distributed BESSs that takes SoC balance into account is proposed. The proposed iterative coordinated control strategy is realized in JADE/Java. By analyzing the simulation results in MATLAB/Simulink, it is concluded that the proposed control strategy is reliable, effective and scalable in mitigating voltage fluctuations in complex LV distribution networks.