A wind power grid-connected accommodation method considering DC modulation

Abstract

The invention discloses a wind power grid-connected accommodation method considering DC modulation, which specifically includes the following steps: Step 1, based on the operating characteristics of DC modulation, with the goal of minimizing the comprehensive operating cost of the "source-grid-storage" system, construct a "Source-grid-storage" coordination and interaction model of wind power, thermal power, DC modulation, and energy storage systems; step 2, based on wind power fluctuation characteristics, determine the wind power grid-connected consumption strategy for "source-grid-storage" coordination and interaction; step 3 , according to the linear programming simplex algorithm to solve the "source-network-storage" coordination interaction model; step 4, based on the solution results, output the optimal wind power consumption strategy for reference by dispatchers. The invention can fully release the wind power consumption potential of the power grid, reduce the wind power abandonment rate and the unit climbing pressure, improve the peak-shaving ability of the power grid, and reduce the impact of large-scale wind power grid integration on the power grid, which is of great significance to the safe and stable operation of the power grid and engineering practical value.

Description

technical field [0001] The invention relates to the fields of new energy grid-connected consumption and energy storage, in particular to a wind power grid-connected consumption method considering DC modulation. Background technique [0002] In response to the national strategy of "Energy Revolution" and "Clean Energy", my country's wind power grid-connected scale has continued 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 installed wind power capacity reached 210 million kW. At present, my country's power generation is still dominated by thermal power generation. As of 2017, my country's thermal power generation accounted for 70.92% of all power generation. Due to the limited climbing ability of thermal power units, insufficient flexibility, and limited ability to absorb wind power, the problem of wind curtailment is more prominent. The scale of UHVDC transmission in my countr...

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