Why is a reasonable allocation of energy storage important?

A reasonable allocation of energy storage ensures the safety support of thermal power for system operation and reduces the operational hours of thermal power units. This mechanism contributes to solving the issue of large-scale renewable energy curtailment.

How to calculate power generation cost after installation of energy storage facilities?

The power generation cost of new energy units after the installation of energy storage facilities is as follows: (7) C N S = M + P n ⋅ Δ Q ′ + S b + S o p = M + P n ⋅ ∫ Δ q min ′ Δ q f (q) ⋅ q ⋅ d q + S b + S o p (8) S b = R ⋅ Q s t r, S o p = N + K ⋅ Δ Q ′ ′ (9) Δ Q ′ ′ = Δ Q − Δ Q ′

Why is energy storage more important than capacity?

An individual new energy supplier’s demand for energy storage is often insufficient to support the development of pumped storage power stations, and cooperative development or partial leasing can be adopted. From the perspective of capacity and power, power is more important than capacity when energy storage is mainly used to suppress fluctuations.

What is the integrated model for energy storage?

Ref. proposed an integrated model for the coordination planning of generation, transmission and energy storage and explained the necessity of adequate and timely investments of energy storage in expansion planning of new power system with large-scale renewable energy. Ref.

Why is energy storage important in a power system?

Energy storage of appropriate capacity in the power system can realize peak cutting and valley filling , reduce the pressure caused by the anti-peak regulation of new energy units, and smooth the fluctuation of new energy output , , .

What is the allowable output fluctuation range after adding energy storage?

The allowable output fluctuation range respectively are 3% and 5%, and the allowable fluctuation range after adding energy storage expands to 5% to 30%.