Distributed PV Collaborative Voltage Control Strategy for Distribution Network Based on Cooperative Game Theory

With distributed photovoltaics (PV) widely connected to the distribution network, the fluctuation and intermittent of PV generations could change the power flow direction in distribution networ, which would cause voltage violation problems. Therefore, this paper analyzes the impact of distributed PVs on distribution network voltage and introduces the idea of cooperative game theory into PV inverters cooperative control for voltage regulation. Firstly, weight factors are constructed using the voltage sensitivit. Then, calculate the voltage deviation function of $P V$ nodes to construct characteristic function. Next, the PV inverter collaborative voltage control strategy based on cooperative game theory is proposed. The improved Shapley value of each PV node is used to allocate reactive and active power regulation. Finally, verify the performance of the strategy proposed by simulation.