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A wind turbine control method and system

A technology of wind turbines and control methods, applied in the direction of wind engine control, engine control, control algorithm types, etc., can solve the problems of ignoring the aerodynamic load of wind turbines and high mechanical loss of wind turbines, and achieve small aerodynamic loads, stable output power, The effect of reducing mechanical loss

Active Publication Date: 2019-11-12
沈阳工业大学自控技术有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a wind turbine control method and system to solve the technical problem in the prior art that the aerodynamic load of the wind turbine is ignored due to the pursuit of maximum wind energy tracking, resulting in high mechanical loss of the wind turbine

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  • A wind turbine control method and system
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  • A wind turbine control method and system

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Embodiment 1

[0053] Embodiment one: if figure 1 As shown in the flow chart of a control method for a wind turbine, an embodiment of the present invention provides a control method for a wind turbine, which is applied to a cooperative controller of a wind turbine in a microgrid. The acquisition module is connected to the wind turbine blades of the wind turbine, and the microgrid operation mode is divided into a grid-connected operation mode and an isolated operation mode. The grid-connected operation mode usually adopts a fixed-pitch control strategy in order to obtain the maximum wind energy. The control strategy during grid-connected operation is optimized, and when the microgrid operates in grid-connected mode, the method includes the following steps:

[0054] Step S101, obtaining the wind speed, the current value and the voltage value of the wind turbine collected by the information collection module;

[0055] In the embodiment of the present invention, the wind turbine may include: a ...

Embodiment 2

[0087] Embodiment two: if Figure 4 The shown is a schematic diagram of a wind turbine 3 control system module provided by the embodiment of the present invention. The wind turbine 3 control system provided by the embodiment of the present invention has the same characteristics as the wind turbine 3 control system provided by the above embodiment. Therefore, the same technical problem can be solved and the same technical effect can be achieved. The control system of the wind turbine 3 includes: a wind turbine 3, an information collection module 1 and a cooperative controller 2;

[0088] The information collection module 1 is connected to the wind turbine 3 for collecting wind speed, current value and voltage value of the wind turbine 3 and sending them to the cooperative controller 2;

[0089] In the embodiment of the present invention, the wind turbine may include a wind speed sensor, a current transformer and a voltage transformer arranged at the center of the hub, and the ...

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Abstract

The invention provides a wind generation set control method and system, and relates to the technical field of wind power generation. The wind generation set control method comprises the following steps of acquiring wind speed and a current value and a voltage value of a wind generation set collected by an information acquisition module; determining a target pitch angle of the wind generation set according to the current value and the voltage value of the wind generation set, the wind speed, and the preset optimum leaf edge speed ratio range; acquiring an azimuth angle of wind turbine blades, and determining pitch angles to be adjusted of the turbine blades based on the azimuth angle and the target pitch angle; and controlling the wind generation set to adjust the pitch angles of the turbine blades according to the pitch angles to be adjusted of the turbine blades. The aerodynamic load which the turbine blades are subjected to can be made as small as possible under the premise of ensuring the stabilization of output power of the wind generation set, so that the mechanical wastage of the wind generation set is reduced. Cooperative control over the output power of the wind generationset and the aerodynamic load which the pitch angles are subjected to is realized.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a control method and system for a wind turbine. Background technique [0002] With air pollution becoming more and more serious, wind energy as a clean renewable energy is one of the solutions to improve the status quo. The wind power system is one of the important components of the microgrid. Random changes in wind speed will lead to significant fluctuations in wind power. Therefore, the access of wind turbines will have a great impact on the stable operation of the microgrid. At the same time, as the main carrier of the aerodynamic load of the wind turbine, the fan blade will directly affect the safe and stable operation of the wind turbine. Therefore, it is very important to control the blade load of the wind turbine in the microgrid. [0003] In the prior art, when the grid-connected mode of the microgrid is running, the wind turbines aim to obtain the maximum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/32F05B2270/328F05B2270/337F05B2270/707Y02E10/72
Inventor 王湘明刘贺顺
Owner 沈阳工业大学自控技术有限公司
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