Study on Optimal Configuration and Economic Models of PV Side Cell Energy Storage System

The randomness and intermittence of distributed photovoltaic power generation lead to low resource utilization. Battery energy storage has the ability of fast power throughput and flexible operation, and is currently one of the effective means to solve photovoltaic grid connection and consumption. This paper studies the current high cost of energy storage and unclear income models, and constructs economic income models of energy storage systems from the perspective of comprehensive income of investors and society. This paper analyzes the cost and benefit composition of energy storage and constructs a life cycle income model of energy storage from the perspective of comprehensive income of investors and society. Use the optimal economic indicators to configure the capacity of energy storage. The breakeven and sensitivity analysis of important factors affecting the economic benefits of energy storage is carried out. Based on the typical day data of a distributed photovoltaic system, the economic analysis and capacity optimization allocation of the energy storage system are carried out. The results show that the cost factor of energy storage plays a major role in the economic benefits of the system.