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A dynamic modeling method for the whole machine of doubly-fed asynchronous wind turbine

A technology for dynamic modeling of wind turbines, applied in CAD numerical modeling, design optimization/simulation, special data processing applications, etc., can solve problems that cannot be simulated

Active Publication Date: 2020-09-29
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Application Information

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Problems solved by technology

However, the interaction between wind turbines and the grid is a dynamic process. Therefore, the machine-side data obtained by using the look-up table cannot analyze the wind turbines and grid caused by the wind turbine torque fluctuations and grid voltage and frequency fluctuations. Simulate the dynamic and transient behavior resulting from the interaction between

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  • A dynamic modeling method for the whole machine of doubly-fed asynchronous wind turbine
  • A dynamic modeling method for the whole machine of doubly-fed asynchronous wind turbine
  • A dynamic modeling method for the whole machine of doubly-fed asynchronous wind turbine

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[0049] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0050] figure 1 It is a schematic flow chart of a method for dynamic modeling of a doubly-fed asynchronous wind power generation unit according to an exemplary embodiment, which specifically includes the following steps:

[0051] S110: Obtain the structural parameters of the wind rotor in the wind power generating set and the lift-drag aerodynamic data of each cross-section airfoil of the blade...

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Abstract

The invention relates to a dynamic whole machine modeling method for a double-feed asynchronous wind generating set. The dynamic whole machine modeling method comprises the following steps: acquiring structural parameters of a wind wheel in the wind generating set and lift drag pneumatic data of each blade section airfoil in the wind wheel; according to the structural parameters and the lift drag pneumatic data, establishing an aerodynamic submodel of the wind wheel according to a free vortex wake method; establishing a mechanical side submodel and an electrical side submodel of the wind generating set; establishing a data transmission channel between the mechanical side submodel and electrical side submodel; performing a coupling solution on a dynamic whole machine model through the data transmission channel, wherein the dynamic whole machine model comprises the mechanical side submodel and the electrical side submodel. By the dynamic whole machine modeling method, through high-accuracy modeling of a mechanical side and an electrical side of the wind generating set respectively and through the coupling solution of the dynamic whole machine model, a simulative analysis on interaction between the wind generating set and power grid disturbance is achieved.

Description

technical field [0001] The invention relates to the technical field of wind power generation control, in particular to a dynamic modeling method for a doubly-fed asynchronous wind power generator set. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. Wind power generation is a wind energy utilization method that uses wind turbines to convert the kinetic energy of the wind into mechanical energy, and then converts the mechanical energy into electrical energy. Considering the cost, the convenience of manufacturing, transportation and installation, more than 80% of the large-scale megawatt wind turbines currently use double-fed asynchronous generators. However, the stator side of the double-fed asynchronous generator is directly connected to the power grid. The characteristics determine that the interaction between the doubly-fed asynchronous wind turbine and the grid is relatively ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20G06F2111/10
Inventor 梁俊宇赵明李孟阳李萍杨家全陆海罗恩博
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST