Energy storage system capacity configuration optimizing method capable of enhancing wind power receiving capacity

Abstract

The invention relates to an energy storage system capacity configuration optimizing method capable of enhancing wind power receiving capacity. The method is characterized in that by constructing a relation between energy storage capacity and equivalent load peak-valley difference, calculating power grid wind power accepting capacity with limit of downward peak-adjustment capacity, calculating the improvement of wind power accepting capacity of an energy storage system, and optimizing the configuration of energy storage capacity under the premise that the energy storage system has the maximum total income, the problem that the access of large-scale wind power is limited due to restrictions of a network source structure and peak-adjusting capacity can be solved, and the influences of the energy storage cost and the large wind power receiving benefits on the capacity of the energy storage system can be fully considered, so that the capacity of the energy storage system is reasonably optimized, further the income maximization is realized.

Description

technical field [0001] The invention relates to the technical field of wind power generation, and relates to a capacity optimization configuration method of an energy storage system for improving wind power acceptance capacity. Background technique [0002] As the global environmental problems become more and more severe, countries all over the world pay more and more attention to the development and utilization of renewable energy. Vigorously developing and utilizing wind energy is an effective way to achieve sustainable energy development and improve environmental quality. The output power of wind turbines depends on the natural wind speed. Its random, intermittent and uncontrollable characteristics determine that when wind power is connected to the grid, conventional power sources must deal with its power fluctuations to ensure safe and reliable power supply to loads. peak". However, at present, the power supply structure in domestic wind power-rich areas is mostly domi...

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Problems solved by technology

However, at present, the power supply structure in domestic wind power-rich areas is mostly dominated by coal power, with heating units accounting for a high proportion and no or only a few pumped storage power stations. Therefore, when wind power capacity accounts for a certain proportion of grid power generation capacity, wind power The fluctuation will increase the peak load of the power grid, especially in winter when the heating unit undertakes the heating task to reduce the peak load capacity. This burden is more obvious and seriously affects the safety and economy of other units in the grid.

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