Configuration and operation model for integrated energy power station considering energy storage

Abstract

AbstractLarge‐scale integration of renewable energy in China has had a major impact on the balance of supply and demand in the power system. It is crucial to integrate energy storage devices within wind power and photovoltaic (PV) stations to effectively manage the impact of large‐scale renewable energy generation on power balance and grid reliability. However, existing studies have not modelled the complex coupling between different types of power sources within a station. This article first analyses the costs and benefits of integrated wind–PV‐storage power stations. Considering the lifespan loss of energy storage, a two‐stage model for the configuration and operation of an integrated power station system is established to maximize the daily average net profit of the station. Furthermore, simulation is done to obtain the optimal configuration for integrated wind–PV‐storage power stations. The results indicate that considering the lifespan loss of storage can enhance the integration of renewable energy. It also improves the charging and discharging strategies of storage devices, extending their actual lifespan from 4.93 to 7.79 years and increasing the investment return rate of the station by 2.4%.