Vector wind power plant modeling method

Abstract

The invention discloses a detailed modeling method for a vector wind power plant. Firstly, wind power plant data are collected, and an M * 1 wind turbine generator vector equation is established; a Simulink vector simulation method is utilized to realize an M * 1 wind turbine generator vector model in Simulink, a single wind turbine generator model is utilized to construct each wind turbine generator in a whole wind power plant, and dynamic parallel simulation of the wind turbine generators is realized; then a single module is used for integrating topology and impedance information of a current collection circuit in a wind power plant, and modeling of any topological current collection circuit in the wind power plant is achieved. On the basis of a detailed modeling method of the vector wind power plant, an alternating current network connection interface of the vector wind power plant is added, and joint simulation of the vector wind power plant and a large power grid is achieved. According to the detailed modeling method for the vector wind power plant, detailed modeling and parallel simulation of all the wind turbine generators and the current collection circuit in the wind power plant can be achieved, so that the detailed dynamic state of all the wind turbine generators in the wind power plant can be reflected, and the interaction effect of all the wind turbine generators in the wind power plant is also considered.

Description

technical field [0001] The invention belongs to the technical field of electric power system wind power, and more specifically relates to a method for detailed modeling of a vector wind farm. Background technique [0002] In recent years, with the large-scale development and utilization of new energy represented by wind power and photovoltaic power generation, a large number of new energy sources have been incorporated into the main grid, and the proportion of new energy generation capacity in the grid has continued to increase. The global installed capacity of wind power continues to increase, and the penetration rate of wind power continues to rise. As of the end of 2018, the cumulative installed capacity of wind power in the world reached 591GW, and its power generation accounted for about 5.5% of the global power generation. Among them, the wind power penetration rates of wind power in Denmark and Germany were 42% and 21%, respectively. my country's cumulative installed...

AI Technical Summary

Problems solved by technology

If aggregated into a single wind turbine, the dynamics between wind turbines cannot be considered in detail

At the same time, with the increase of wind power penetration rate, a large number of distributed control will be applied to wind turbines, and wind farms aggregated into a single wind turbine have inherent defects in the study of distributed control

[0004] However, the traditional method may lead to problems such as dimensionality disaster when modeling each wind turbine in detail. At the same time, according to the modeling rules of other conventional simulation software (such as PSCAD, PSASP, etc.), establishing a detailed wind farm requires The model of the unit is replicated multiple times. Due to the large number of wind turbines (dozens or even hundreds), it becomes unrealistic to use the duplication operation.

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