A watershed wind farm group planning method aiming at stable output

Abstract

The invention discloses a watershed wind farm group planning method aiming at stable output, comprising the following steps: selecting a watershed to be planned, defining the boundary of the watershed to be planned, and determining the number of wind farms to be planned in the watershed to be planned; Plan the boundary of the watershed, build a mesoscale numerical weather model that can cover the planned watershed based on the WRF model; use the obtained global fn l data during the target year to drive the mesoscale numerical weather model, and obtain the refinement of the planned watershed during the target year Grid wind field data; in the refined grid wind field data, with the goal of stable output, the best wind farm layout is determined with the help of PSO optimization algorithm. The advantages are: using the optimization method, with the help of refined numerical simulation technology, and taking the watershed as a unit, plan the optimal configuration of wind farms in the watershed, so that when these wind farms in the watershed generate electricity at the same time, they can maintain relative stability and reduce wind power consumption. Difficulty in large-scale grid connection or bundling output of wind power and hydropower.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a method for planning a watershed wind farm group aiming at stable output. Background technique [0002] At present, major changes have taken place in the world's energy structure, and new energy represented by hydropower, wind power, and photovoltaics has developed rapidly. Carbon control and carbon reduction are the consensus of human society, and the proportion of new energy will continue to increase for a long period of time in the future. Among them, wind power has the advantages of being inexhaustible, but wind power also has the disadvantages of poor stability and difficulty in storage, which makes it difficult to connect wind power to the grid in some areas. In order to solve the problem of difficulty in connecting wind power to the grid, the bundling output of water and wind power has been proposed and has become the frontier and focus of current research. Theref...

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Problems solved by technology

Therefore, the planning and construction of wind farms based on watersheds is extremely important. However, due to technical and data reasons, current wind farm planning is mostly aimed at maximizing the resources of a single wind farm, and does not consider wind farm groups. Coordination between the output of various wind farms in China, the basin wind farm group thus constructed cannot guarantee the stability of wind farm output from the perspective of regional resource characteristics, and can only rely entirely on frequent regulation of hydropower or large-scale curtailment of wind to ensure the stability of the power system , it is difficult to achieve the overall stable output of the wind farm group from the resource characteristics

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