A Method for Optimal Configuration of Energy Storage Capacity Considering Operation and Penalty Costs

Abstract

For the restriction relation between energy storage system configuration capacity and battery life attenuation degree and wind power integration demand deviation, the invention provides an energy storage capacity optimal configuration method considering operation and penalty cost. The method is characterized in that the method comprises calculating influence, that is, attenuation coefficient, of different charge and discharge cycle depths on service life of a lithium battery; calculating operation cost of different battery energy storage capacity configurations; and calculating penalty cost of the different battery energy storage capacity configurations and the like. The method, taking factors of system operation cost and the penalty cost and the like and taking lowest energy storage system cost as an object, provides an effective strategy for energy storage capacity configuration. The method has the advantage of being reasonable and scientific, being high in applicability and being good in effect, can enable the energy storage system to realize optimal capacity configuration, and realize low total cost and the like.

Description

technical field [0001] The invention relates to the technical field of wind power generation, and relates to an optimal allocation method of energy storage capacity in consideration of operation and penalty costs. Background technique [0002] In recent years, wind power has developed rapidly due to its advantages of non-pollution and permanent primary energy. As of the end of 2015, the cumulative installed capacity of wind power in the world has reached 369.553GW. However, due to the randomness, intermittent nature and Unpredictability, large-scale wind power grid connection seriously threatens the safe and stable operation of the power system, and limits the effective use of wind energy, a green energy. The time-space translation of wind power can be achieved by battery energy storage technology, which is considered to be an effective means to improve the ability of the grid to accept wind power. However, due to the limitations of current technical factors, the cost of ba...

AI Technical Summary

Problems solved by technology

Although the existing technologies optimize the capacity allocation of energy storage systems from different angles, they do not take into account the operating costs of the energy storage systems and the penalty costs when the dispatching requirements are not met.

So far, there have been no literature reports and practical applications of energy storage capacity optimization configuration methods that take into account operation and penalty costs

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