Energy storage power station settlement method

What is shared energy storage?

Shared energy storage is applied to integrated energy systems, providing power auxiliary services to renewable energy and power grids within a certain region through interconnection, coordinated control, and overall management of power devices at different levels.

What is the pricing mechanism for shared energy storage?

Li et al. developed a pricing mechanism for shared energy storage based on the theory of finite rationality by considering wind and solar uncertainty, and proposed a coordinated control method for shared energy storage serving multiple community energy systems.

What happens to the energy storage system during a time period?

During 16:00–21:00 and 4:00–8:00 periods, the SOC of the energy storage system decreases, and the available charging space gradually increases, leading to an increase in the bid for downward reserve.

How does energy storage work?

The energy storage system can maintain the state of charge for the initial operation with a fluctuation of about 0.5, allowing it to move on to the next dispatch period. Under Scenario 4, energy storage is used throughout the period and is not idle.

What happens if a source-storage integrated system cannot meet load demand?

When the equipment within the source-storage integrated system cannot meet the load demand, it is necessary to purchase electricity from the higher-level power grid. Conversely, when the load demand is met, and there is surplus electricity, profits are obtained by selling it to the higher-level power grid.

What is the cost function of a source-storage integrated system?

The cost function for interaction between the source-storage integrated system and the higher-level power grid is as follows: (20) C a, t = λ t in P buy, t P sell, t where P buy, t and P sell, t represent the power purchased from and sold to the higher-level power grid during period t, respectively.