Yaw control method for wind generating set

A wind turbine and yaw control technology, which is applied in the control of wind turbines, wind turbines, and engine control, etc., can solve the problems of not considering wind direction determination conditions, increasing the cost of the yaw system, increasing the cost of the whole machine, etc. Yaw to wind ability, easy to adjust, reduce the effect of self-consumption electricity

CN107152374AActive Publication Date: 2017-09-12BEIJING SANLI XINNENG SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-09-12

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Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to a yaw control method for a wind generating set. The yaw control method for the wind generating set comprises the following steps that different wind direction judgment modules are selected according to the period T (T=T0+T1), the contrastive analysis is conducted on the yaw frequency N# counted in different wind direction sections, and the yaw error angle delta theta is dynamically given in combination with the wind speed judgment section, and effective unit yaw control is achieved. The yaw control method has the beneficial effects that on the basis of existing yaw hardware equipment, the time lag control over a unit yaw wind countering system can be achieved; especially when wind direction fluctuation is little, the yaw wind countering angle is increased by dynamically giving the yaw error angle under the weak wind condition, the work frequency of the yaw system under weak wind is reduced, and the auxiliary power supply of the unit is reduced; and similarly, the yaw wind countering angle is reduced by dynamically giving the yaw error angle under the heavy wind condition, the yaw wind countering capability is improved, more wind energy is captured, and the power generating amount of the unit is increased.
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Description

technical field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a yaw control method of a wind power generating set. Background technique

[0002] The impeller device of the wind turbine can realize the effective capture of wind energy, and the prerequisite for the impeller to effectively capture wind energy is the efficient wind-facing of the yaw system, so the yaw system of the unit plays a vital role in the power generation performance of the wind turbine. The research and control of the current crew on the yaw system mainly focuses on the protection of the yaw system itself, the wind of the yaw system, the load reduction of the yaw system, and the wind field level control of the yaw system. The main technical means and methods for yaw control include: developing new control algorithms; adopting new wind measuring and wind-facing devices; adopting new yaw rate adjustment devices; adopting new control methods; com...

Examples

Embodiment Construction

[0043] attached Figure 1-6 It is a specific embodiment of the present invention. The invention is a method for controlling the yaw of a wind power generating set, comprising the following steps: through periodic T (T=T 0 +T 1 ) Select different wind direction judgment modules, and count the number of yaw times N for different wind direction intervals # By doing comparative analysis, combined with the wind speed determination interval, the yaw error angle Δθ is dynamically given, so as to realize the effective control of the yaw control of the unit.

[0044] In addition, the present invention also provides a wind turbine yaw control system, which includes the following modules:

[0045] Module 1: timing enable selection module; unit yaw control periodic selection module, mainly for periodic enable selection of subsequent wind direction determination module;

[0046] Module 2: yaw counting modules 1 and 2; module 2 mainly includes the yaw counting module and the counting de...