The intermediary fee for energy storage is calculated based on capacity

Should energy storage system be constrained by upper and lower limits?

The capacity of energy storage system at each moment should be constrained by its upper and lower limits.

Does energy storage capacity configuration affect power distribution and revenue?

Energy storage capacity configuration affect the power distribution and revenue. A bi-level optimization model was proposed in multi-stakeholder scenarios considering energy storage ancillary services to coordinate the optimal configuration between power grid and wind and solar energy storage power stations.

What happens if energy storage capacity is greater than 450 kWh?

When energy storage capacity is greater than 450 kwh, the capacity of energy storage to participate in the service market is enhanced and income increases, which results in a corresponding increase in the cost of power grid to purchase energy storage power.

What is the optimal configuration of energy storage capacity?

In terms of the configuration of energy storage capacity, the optimal configuration is 450 kWh/160 kW according to the comparison of the economic benefits of upper and lower levels under various capacities to satisfy the balance of economic interests.

How can energy storage capacity be optimized?

Li et al. optimized the configuration of energy storage capacity by considering the minimum running cost of energy storage in the market of reducing peak demand as the objective function . Wu et al. established a bi-level model structure.

How do you calculate the cost of storage?

The cost can be expressed as follows: (17) C i n v e s t = C q Q N # + C p P N # where C q is the investment coefficient per unit capacity, C p is the investment coefficient per unit power, Q N # indicates rated storage capacity, P N # indicates the rated storage power.