Wind power integration consumption method taking direct-current modulation into consideration

Abstract

The invention discloses a wind power integration consumption method taking direct-current modulation into consideration. The method specifically comprises the following steps: 1, building a source-grid-storage coordination interaction model containing wind power, thermal power, direct current modulation and an energy storage system based on the operation characteristics of direct current modulation and taking the minimum comprehensive operation cost of a source-grid-storage system as a target; 2, based on wind power fluctuation characteristics, determining a source-network-storage coordinated and interactive wind power integration consumption strategy; 3, solving the source-network-storage coordination interaction model according to a linear programming simplex algorithm; and 4, based on a solving result, outputting an optimal wind power consumption strategy for reference of a dispatcher. According to the invention, the wind power absorption potential of a power grid can be fully released, a wind curtailment rate and unit climbing pressure are reduced, the peak regulation capacity of the power grid is improved, the impact of large-scale wind power integration on the power grid is reduced, and the method has important significance and engineering practical value for safe and stable operation of the power grid.

Description

technical field [0001] The invention relates to the fields of new energy grid-connected accommodation and energy storage, in particular to a wind power grid-connected accommodation method considering DC modulation. Background technique [0002] In response to the national "energy revolution" and "clean energy" strategies, my country's wind power grid-connected scale continues to increase. In 2019, the country's newly installed wind power capacity was 25.74 million kW, a year-on-year increase of 40%, and the cumulative wind power installed capacity reached 210 million kW. At present, my country's electric power generation is still dominated by thermal power generation. As of 2017, my country's thermal power generation accounted for 70.92% of the total power generation. Due to the limited climbing ability of thermal power units, the lack of flexibility, and the limited ability to absorb wind power, the problem of wind curtailment is more prominent. The scale of UHV DC transmi...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the bottlenecks of low wind power consumption level and limited space for wind power consumption existing in the existing wind power consumption methods, the invention provides a wind power grid-connected consumption method considering DC modulation, which can fully release the wind power consumption of the power grid Potential, reduce wind curtailment rate, unit climbing pressure, improve peak-shaving capacity of the grid, and reduce the impact of large-scale wind power grid integration on the grid

Images