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 should energy storage facilities be installed?

For new energy units, proper deployment of energy storage facilities can promote the consumption of excess generation, increase the option of selling electricity in the high price period, participate in the competition auxiliary service market, and improve the return on total life cycle assets.

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%.

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 electrochemical energy storage?

Electrochemical energy storage has a fast response speed of milliseconds, which is mainly used for frequency modulation and short-term fluctuation suppression. However, electrochemical energy storage has a limited number of charge/discharge cycles and a short life span, making it not suitable for large capacity and long term use.

How does energy storage affect the cost of energy storage?

When new energy units are equipped with energy storage facilities, the cost of energy storage is hedged against the total amount of penalty, and the output power range increases, so the curve moves from B1 to B3.