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Offshore floating type wind turbine generator floating platform pitching resistance increasing control method and module

A wind turbine and floating technology, which is applied in the control of wind turbines, engine control, wind power generation, etc., can solve the problems of small recovery force, achieve the effect of cost saving and strong theoretical basis

Active Publication Date: 2021-04-09
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The area of ​​the water plane is larger and the sway performance is better, but its disadvantage is that the restoring force is small during the vertical movement, and the heave movement is more obvious

Method used

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  • Offshore floating type wind turbine generator floating platform pitching resistance increasing control method and module
  • Offshore floating type wind turbine generator floating platform pitching resistance increasing control method and module
  • Offshore floating type wind turbine generator floating platform pitching resistance increasing control method and module

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Effect test

Embodiment 1

[0049] Such as figure 1 As shown, this embodiment provides a method for controlling the pitching resistance of the floating platform of an offshore floating wind turbine. First, measure the pitch angle and wind speed of the floating platform in real time; compare the measured pitch angle of the floating platform with the corresponding alarm limit value For comparison, if it is greater than or equal to the alarm limit value, the unit will trigger an alarm to shut down, if it is less than the alarm limit value, the unit will operate normally; then according to the real-time wind speed, linear interpolation calculates whether to start the threshold of the floating platform pitching resistance control strategy ; When the pitch angle of the floating platform is less than the corresponding threshold value, the control strategy for adding resistance to the pitching of the floating platform will not be started, and the pitch setting value at this time is multiplied by Take the control...

Embodiment 2

[0073] The conventional controller of the wind turbine consists of two parts: the torque controller and the pitch controller: the torque controller works when the wind speed is below the rated wind speed, and is used to capture the maximum wind energy; the pitch controller is used when the wind speed is above the rated wind speed, through Adjust the pitch angle to keep the generator speed near the rated speed, so as to ensure the normal operation of the unit and ensure that the output power of the unit is at the rated power. However, considering the pitching problem of the floating platform of offshore floating (semi-submersible) wind turbines, a new control module is established on the basis of the pitch controller to reduce the pitching amplitude of the floating platform, such as figure 2 As shown, the control module measures the pitch angle and wind speed of the floating platform in real time; compares the measured pitch angle of the floating platform with the corresponding...

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Abstract

The invention discloses an offshore floating type wind turbine generator floating platform pitching resistance increasing control method and module. The method comprises the steps that firstly, the pitching angle and wind speed of a floating platform are measured in real time; the measured pitching angle of the floating platform is compared with a corresponding alarm limit value, if the measured pitching angle is larger than or equal to the alarm limit value, the generator triggers alarm shutdown, and if the measured pitching angle is smaller than the alarm limit value, the generator operates normally; then, according to the real-time wind speed and linear interpolation calculation, whether a threshold value of a floating platform pitching resistance increasing control strategy is started or not is obtained; when the pitching angle of the floating platform is smaller than the corresponding threshold value, the pitching resistance increasing control strategy of the floating platform is not started; when the pitching angle of the floating platform is not smaller than the corresponding threshold value, the floating platform pitching resistance increasing control strategy is started, the stress of the generator is changed by adjusting the blade angle, so that the pitching amplitude of the floating platform is reduced, and safe and stable operation of the generator is guaranteed.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to a method and module for controlling pitching and resistance of a floating platform of an offshore floating wind power generator. Background technique [0002] Due to the obvious advantages of offshore wind power, good wind resources, stable wind speed, and the developed economy along the southeast coast, the large demand for electricity can solve the problem of consumption and improve the utilization rate of wind power energy. Therefore, offshore wind power will usher in rapid development. Based on the accumulation of offshore wind power technology in recent years, it has gradually developed into deep water areas, and the floating foundation type (floating platform) is the future development trend. [0003] The current common concepts of floating foundation types (floating platforms) include: Spar, semi-submersible (pontoons), tension legs (TLP), etc. Spar structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00B63B35/44B63B39/00G08B21/18
CPCF03D7/00B63B35/44B63B39/00G08B21/18F05B2260/70F05B2270/101F05B2270/1033B63B2035/446Y02E10/72Y02E10/727
Inventor 周玲王超邹荔兵任永卢军张广兴
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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