Aggregation model building and simulating method for high-capacity wind power plant fan

Abstract

The invention provides an aggregation model building and simulating method for a high-capacity wind power plant fan, and relates to a wind turbine system, and particular to a method for the modeling analysis of a doubly-fed induction generator system using computer programs. The method comprises the following steps of: building a wind power model to simulate wind power absorbed by a wind machine; building a fan shaft system model; building a propeller pitch control system model; building a doubly-fed asynchronous induction motor electric simulation model; building a power grid-side frequency converter and rotor-side frequency converter controller model; building a high-capacity wind power plant detailed model and a wind power plant aggregation model; and setting the simulation run working condition and the failure state of a wind turbine generator system, so that the fault simulation can be carried out, and the fan aggregation model can be verified. According to the method, the detailed model and the high-capacity wind power plant fan aggregation model, which accord with the physical property of a doubly-fed variable-speed constant-frequency wind turbine generator, can be built, so that the simulation precision can completely meet the requirement, and the simulation speed can be greatly improved; and therefore, the method is suitable for the stability analysis after the wind power accesses into a large-scale power grid.

Description

technical field [0001] The invention relates to a wind power generation system, in particular to a method for modeling and analyzing a doubly-fed wind power generating set system by using a computer program. Background technique [0002] Since the 1980s, the application of wind power generation has attracted more and more attention from all over the world. With the rapid development of science and technology, especially the application of aerodynamics, cutting-edge aerospace technology and high-power power electronics technology to the development and development of new wind turbines, wind power has made great progress in the past two decades. Today's wind power generation is gradually moving toward scale and industrialization, and the proportion of wind power generation in the power grid is increasing, becoming the most mature and realistic clean energy power generation method besides hydropower generation. Vigorously developing wind power generation is of great significan...

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Problems solved by technology

In addition, PSCAD / EMTDC can also establish the electromagnetic transient model of the fan, and the modeling accuracy can reach the device level, so it is an ideal tool for investigating the dynamic characteristics of the fan stand-alone system under various working conditions and faults, but it is not suitable for the connection of the fan Simulation after the big net

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