Operation control method for parallel variable-speed constant-frequency wind generator set

A wind power generation unit, operation control technology, applied in the direction of control generator, control system, single network parallel feeding arrangement, etc., can solve the problems that the design and production technology is still in technology development

Inactive Publication Date: 2009-04-08
SOUTHEAST UNIV
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Problems solved by technology

[0004] Although my country's wind power industry is developing rapidly, there is a big gap in wind power generator manufacturing technology and wind power control technology compared with wind power developed countries.
Advanced wind power technologies such as large-scale wind turbines, active stall control,

Method used

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  • Operation control method for parallel variable-speed constant-frequency wind generator set
  • Operation control method for parallel variable-speed constant-frequency wind generator set
  • Operation control method for parallel variable-speed constant-frequency wind generator set

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Embodiment Construction

[0076] The control method of the grid-connected variable-speed constant-frequency wind power generating set of the present invention, its control flow is as follows figure 1 As shown, it is mainly realized through the following main control strategies:

[0077] First of all, before the unit starts, the wind rotor must be aligned with the wind, so that the axial direction of the wind rotor is aligned with the wind direction, and the maximum wind energy is captured at one time.

[0078] A1. The average wind speed measured by the wind speed sensor within 10 minutes is greater than 3m / s, and the wind rotor starts to face the wind;

[0079] A2. Judging whether the wind wheel has completed facing the wind, that is, judging |V|>|V 0 |Is it true, where V is the yaw error signal obtained by the wind vane sensor, V 0 Set value for yaw;

[0080] When the judgment is no, the wind turbine completes facing the wind, the yaw motor stops, and the yaw brake is activated;

[0081] When the ...

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Abstract

An operation control method of a synchronization variable speed constant frequency wind generating set includes the strategies of AYC, synchronization control, low wind speed ceiling capacity follow control and high wind speed constant power control which includes the AYC, the synchronization control, the low wind speed ceiling capacity follow control and the high wind speed constant power control. An anemoscope and a wind vane measure the wind speed and wind direction information to generate a yaw deviation signal; a yaw motor is driven to execute left and right yaw according to the yaw direction and angle and limit the yaw velocity and meanwhile, the steering turns of the engine room are measured with the help of cables winding around a sensor, so as to execute safe untwist action, thus ensuring that the wind generating set realizes quick, accurate and safe effect of the wind wheel against wind. All the control strategies cooperate in work from the start to synchronization power generation according to the requirement of the set and external conditions, so as to ensure the safe and efficient operation of the wind generating set.

Description

technical field [0001] The invention relates to an operation control method of a grid-connected wind power generator set, which is suitable for grid-connected operation of wind power generators of various capacity models, and belongs to the field of new energy and automatic control. Background technique [0002] With the rapid development of the economy, the consumption of energy is increasing year by year, and the conventional energy resources are facing the dilemma of depletion day by day. There is an urgent need for some clean, pollution-free and renewable new energy sources. Wind energy is a clean and sustainable energy. Wind energy development has huge economic, social, and environmental protection value and development prospects. In the past 20 years, wind power technology has made great progress, and wind power development has the fastest growth rate among all kinds of energy development. China has abundant wind power resources, and the development of the wind power i...

Claims

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Application Information

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IPC IPC(8): H02P9/04H02P9/42H02J3/42
Inventor 吕剑虹赵亮陈贝吴科
Owner SOUTHEAST UNIV
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