Start control system and method of wind generating unit

A technology for wind power generators and start-up control, which is applied to the control of wind power generators, wind power generators, wind power generation, etc., and can solve the problems of reducing wind speed at the start-up of wind power generators, increasing manufacturing costs and energy consumption, etc.

Inactive Publication Date: 2015-12-09
SANY ELECTRIC CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a start-up control system and method for wind power generators to solve the problem of improving the power generation efficiency of wind p

Method used

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  • Start control system and method of wind generating unit
  • Start control system and method of wind generating unit
  • Start control system and method of wind generating unit

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Example

[0041] Such as figure 2 As shown, a first embodiment of the present invention is shown, a start-up control system of a wind power generating set, including a wind speed acquisition device 10, a rotation speed acquisition device 20, a control device 30, and an adjustment device 40.

[0042] The wind speed obtaining device 10 is connected to the control device 30 and is used to obtain the real-time wind speed of the environment in which the wind turbine generator is located, and send the real-time wind speed to the control device 30.

[0043] Specifically, the wind speed acquiring device 10 is one or more devices installed near the wind turbine generator set that can acquire the real-time wind speed of the environment in which the wind turbine generator is located, monitor the real-time wind speed of the environment in real time, and use wired or wireless communication methods. Send to the A / D conversion interface of the control device 30.

[0044] The rotation speed obtaining device ...

Example

[0067] On the other hand, such as Figure 5 As shown, a second embodiment of the present invention is shown, a method for starting control of a wind turbine generator set, including the steps:

[0068] S100: Obtain the real-time wind speed of the environment where the wind turbine is located.

[0069] S200: Obtain the real-time speed of the generator shaft of the wind turbine generator.

[0070] S300: Determine the target pitch angle of the blades of the wind turbine according to the real-time wind speed and real-time rotational speed, and send a control signal according to the target pitch angle.

[0071] S400: Adjust the pitch angle of the blade to the target pitch angle according to the control signal.

[0072] In this embodiment, the startup control method of the wind turbine generator can monitor the real-time wind speed and current real-time speed of the current environment, and determine the target pitch angle of the blade according to the relationship between the two and the bla...

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Abstract

The invention relates to a start control system and method of a wind generating unit. The real-time wind speed of the environment in which the wind generating unit works and the real-time rotating speed of a generator shaft are monitored in real time, so that a target pitch angle of blades is determined, a pitch angle of the blades is adjusted to the target pitch angle, the start torque of the blades can be increased, a wind wheel is driven to accelerate to reach paralleling rotating speed, and electric generation is started. Due to the fact that the target pitch angle is determined in real time according to the real-time external environment and the state of the wind generating unit and continuously adjusted, the wind generating unit can adapt to environment changes and self-state changes and can react rapidly in time. Particularly, when the wind speed of the environment in which the wind generating unit works is low and the rotating speed of the blades cannot reach rotating speed needed by paralleling electric generation, the pitch angle of the blades is adjusted to the target pitch angle, the start torque of the blades is increased, the start wind speed of the wind generating unit is lowered, then, the electric generating efficiency of the wind generating unit at the low wind speed is improved, and the manufacturing cost and energy consumption of the unit are not increased.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a start-up control system and method for a wind power generating set. Background technique [0002] With the continuous increase of wind power installed capacity, high-quality wind resources are becoming less and less, so it is particularly important to improve the power generation efficiency of wind turbines, especially under low wind speed conditions. At present, in order to improve the power generation efficiency of wind turbines under low wind speed conditions and make full use of wind energy, one of the effective methods is to reduce the start-up wind speed of wind turbines. [0003] There are roughly four ways to reduce the start-up wind speed of a wind turbine. One is to equip the generator with a power supply module such as a battery. The machine becomes a motor and drives the wind wheel to rotate. This method needs to be equipped with an independent power supply module, wh...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/72Y02P70/50
Inventor 张海涛翁艳
Owner SANY ELECTRIC CO LTD
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