Hardware-in-loop simulation based wind power unit modeling method

Abstract

The invention provides a hardware-in-loop simulation based wind power unit modeling method. The method comprises the following steps: establishing a pneumatic mechanical model of a wind power unit; establishing a power generator converter model of the wind power unit; and establishing an external power grid model. According to the hardware-in-loop simulation based wind power unit modeling method provided by the invention, the modeling of the pneumatic mechanical model of the wind power unit, the power generator converter model of the wind power unit and the external power grid model is finished, and a real-time simulation interactive technology is provided based on the models, so that the authenticity and timeliness of simulation of the whole wind power unit are ensured and the authenticity of a wind power unit control policy and running characteristics of parts is ensured; and a true power grid condition can be simulated in a lab environment to simulate true running characteristics of the wind power unit, and especially the completeness of a practical main control policy of the wind power unit can be tested.

Description

technical field [0001] The invention relates to a modeling method, in particular to a modeling method of a wind turbine based on hardware-in-the-loop simulation. Background technique [0002] Performance testing and evaluation of wind turbines is an important technical means to improve the grid-connected performance of wind turbines. The existing wind turbine performance testing and evaluation methods mainly include: model simulation, component platform testing and field testing. Model simulation mainly uses simulation software such as Matlab / Simulink, GHBladed and PowerFactory to establish the model of the wind turbine and use the model to simulate and analyze the operating characteristics of the wind turbine. During the model establishment process, some strategies need to be simplified, and the accuracy of the simulation depends on different There are differences in the degree of model simplification; component platform tests currently include generator platform tests and...

AI Technical Summary

Problems solved by technology

Model simulation mainly uses simulation software such as Matlab / Simulink, GHBladed and PowerFactory to establish the model of the wind turbine and use the model to simulate and analyze the operating characteristics of the wind turbine. During the model establishment process, some strategies need to be simplified, and the accuracy of the simulation depends on different There are differences in the degree of model simplification; component platform tests currently include generator platform tests and pitch platform tests. The operating characteristics of components are tested by simulating the test environment in the laboratory. According to the platform test conditions, it is impossible to simulate all wind turbines. It is not an efficient testing method, and the platform occupies a large area and costs high. On-site testing is performed on actual wind turbines, which is the method that can most accurately reflect the operating characteristics of wind turbines. However, due to the random nature of wind power and Volatility, long field test cycle, high cost, high risk, and not suitable for empirical research tests

[0003] The invention patent with the application number 201110275971.3 provides a hardware-in-the-loop experiment system and method for testing the main control system of wind turbines. In the system, the wind turbine model is simulated by setting the parameters of the wind turbine, and the simulation results of the model are used as the main control system of the wind turbine. This method also focuses on the main controller strategy test, and lacks the establishment of a detailed model of the fan, so it cannot simulate accurate fan operating characteristics

[0004] The invention patent with the application number 201210583480.X discloses a wind turbine generator in-the-loop simulation measurement and control system and its test method. The method focuses on using this test method to test the control strategy of the main control system. Relatively simple, especially the converter, generator and grid models are not modeled in detail, and cannot reflect the electrical characteristics of the wind turbine

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