A Capacity Configuration Model for User-Oriented Photovoltaic Energy Storage System

Focusing on the subject of third-party enterprises configuring the photovoltaic energy storage system for the user side, this paper synthetically considers numerous elements, for instance the user side load demand, photovoltaic equipment output and energy storage capacity decay over time, time-of-use electricity price, and establishes a capacity configuration model whose objective is to obtain the utmost net present value during the whole life cycle of the system. The model not only realizes the optimal capacity configuration, but also obtains the ideal operation strategy of the photovoltaic energy storage system. A certain project example verifies the availability of the capacity configuration model, and the sensitivity analysis shows that the model can be used to select the optimal capacity according to the change of the investment cost or the change of the time-of-use electricity price, which has practical application value in engineering.