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Control method and device for variable pitch system of wind turbine generator set

A technology of wind turbine and pitch control system, which is applied to the control of wind turbines, wind turbines, and wind power generation. It can solve the problems of large and single main shaft loads, and the inability to effectively ensure the safety of wind turbines, so as to improve safety. and reliability effects

Active Publication Date: 2016-04-13
BEIJING ETECHWIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing design has the following deficiencies: First, with the continuous development of large-scale blades of units with the same power, during the development of large-blade units, under the condition that the blades are stuck, the limit load on the main shaft due to the aerodynamic imbalance of the impeller Larger, the existing emergency shutdown mode according to the set rate cannot pass the strength check of the structural parts of the unit; secondly, regardless of the shutdown mode, a single shutdown operation process is adopted, which will not be able to effectively guarantee the wind turbine. safety

Method used

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  • Control method and device for variable pitch system of wind turbine generator set
  • Control method and device for variable pitch system of wind turbine generator set
  • Control method and device for variable pitch system of wind turbine generator set

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Embodiment 1

[0015] figure 1 It is a schematic flow chart of the control method of the pitch system of the wind power generating set in Embodiment 1 of the present invention, as shown in figure 1 As shown, the control method of the wind turbine pitch system includes:

[0016] Step 110: Obtain the shutdown mode of the wind power generating set.

[0017] Step 120: According to the shutdown mode, control the pitch system to perform a shutdown operation according to the first emergency shutdown procedure, or control the pitch system to perform a staged shutdown operation according to the second emergency shutdown procedure.

[0018] Here, it should be emphasized that "first" and "second" are only references to distinguish different emergency shutdown procedures, and are not intended to be specific limitations on shutdown procedures.

[0019] From the purpose of the present invention, no single shutdown operation procedure is adopted for different shutdown modes, but a corresponding effective...

Embodiment 2

[0041] Figure 4 It is a structural schematic diagram of the control device of the wind turbine pitch system in Embodiment 2 of the present invention, which can be used to execute such as figure 1 The method steps of the illustrated embodiment.

[0042] refer to Figure 4 , the control device of the pitch system of the wind power generating set includes a shutdown mode acquisition module 410 and a shutdown operation control module 420 .

[0043] The shutdown mode acquisition module 410 is used to acquire the shutdown mode of the wind power generating set.

[0044] The shutdown operation control module 420 is used for controlling the pitch system to perform a shutdown operation according to a first emergency shutdown procedure, or controlling the pitch system to perform a staged shutdown operation according to a second emergency shutdown procedure according to the shutdown mode.

[0045] Preferably, the shutdown mode may be a blade stuck fault shutdown mode corresponding to ...

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Abstract

The embodiment of the invention provides a control method and a control device for a variable pitch system of a wind turbine generator set. The control method for the variable pitch system of the wind turbine generator set comprises the following steps: obtaining a shutdown mode of the wind turbine generator set; and according to the shutdown mode, controlling the variable pitch system to implement shutdown operation according to a first emergency shutdown process, or controlling the variable pitch system to implement sectional shutdown operation according to a second emergency shutdown process. According to the control method and the control device for the variable pitch system of the wind turbine generator set provided by the invention, corresponding shutdown operation processes are adopted based on different shutdown modes, so that the safety of the shutdown operation of the wind turbine generator set is improved, and the unit design load is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a control method and device for a pitch control system of a wind power generating set. Background technique [0002] With the development of technology, the attention and utilization of renewable energy are increasing day by day. Among them, wind power generation is a relatively mature energy technology. Wind power generation requires strong environmental adaptability, and the pitch system is one of the core components of wind power generation. The pitch system receives instructions from the main control system of the wind turbine to adjust the blades of the wind turbine to a specified angle. Below the rated wind speed, the position of the blades is kept near 0 degrees to maximize the capture of wind energy and ensure aerodynamic efficiency; when the rated wind speed reaches or exceeds the rated wind speed, the blade angle is adjusted according to the instructions of the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00Y02E10/72
Inventor 胡清阳卢勇李庆江
Owner BEIJING ETECHWIN ELECTRIC
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