Design of double-layer capacity allocation model for hybrid energy storage in distribution network with photovoltaic power supply

Abstract To improve the efficiency of hybrid energy storage double-layer capacity allocation in photovoltaic power distribution networks, this study proposes a hybrid energy storage double-layer capacity allocation model based on fundamental frequency equivalent energy steady-state gain control. The innovation of this model lies in constructing specific constraints and control parameters, using a multi-parameter fusion configuration method to analyze the equivalent energy fusion characteristics, and conducting an in-depth analysis of power flow constraints under optimal power flow. At the same time, an adaptive steady-state gain control mechanism is introduced, fully considering the diversity of distributed nodes in multi-photovoltaic power distribution networks and the differences in new energy output and load demand, achieving precise allocation of dual-layer capacity for hybrid energy storage. Through simulation experiments, the model demonstrates high reliability and minimizes network losses while ensuring the safety of the distribution network and the reliability of power supply. The experimental results show that the model achieves optimal operation, optimal charging and discharging power configuration, and energy storage state value optimization, effectively verifying its feasibility and superiority in the application of photovoltaic power distribution networks.