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Variable-pitch control method and device for wind generating set, electronic equipment and medium

A technology of a wind power generating set and a control method, which is applied in the direction of wind power engine control, engine control, wind power engine, etc., and can solve problems such as the waiting time of the release relay, the overshoot of the integral coefficient system, and inappropriate PID parameters, etc. Achieve the effects of speeding up the pitch adjustment speed, improving stability, improving control performance and running performance

Active Publication Date: 2019-03-12
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Increasing the PID control parameters can improve the corresponding performance of the system, but because the PID parameters are not suitable, it will have a negative impact on the system. For example, if the proportional coefficient is too large, it will cause system oscillation, and if the integral coefficient is too large, it will cause system overshoot.
In addition, this process cannot effectively solve the waiting time of the release relay

Method used

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  • Variable-pitch control method and device for wind generating set, electronic equipment and medium
  • Variable-pitch control method and device for wind generating set, electronic equipment and medium
  • Variable-pitch control method and device for wind generating set, electronic equipment and medium

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Embodiment 1

[0044] Such as figure 1 As shown, this embodiment provides a pitch control method of a wind power generating set, and the method may be executed by the main control controller in the wind power generating set, or the internal or external PID controller of the main control controller. The method includes the following steps: S110. Obtain the angle difference between the given pitch position and the actual pitch position; S120. Obtain the pitch speed difference according to the angle difference and the correction time; S130. determining a new given pitch speed, and performing pitch control according to the new given pitch speed.

[0045] The main control controller performs the pre-correction operation of the PID control according to the difference between the pitch angle given value and the actual value of the pitch angle, so as to compensate for the response lag caused by the response time of the pitch driver and the brake release time of the pitch motor (about 1 second). Th...

Embodiment 2

[0106] Such as Figure 8 As shown, this embodiment provides a pitch control device 800, which includes: a pitch angle difference acquisition module 810, configured to acquire an angle difference between a given pitch position and an actual pitch position; The difference acquisition module 820 is used to obtain the pitch speed difference according to the angle difference and the correction time; the given pitch speed switching configuration module 830 is used to obtain the pitch speed difference according to the original given pitch speed and the pitch speed difference , determine a new given pitch speed, and perform pitch control according to the new given pitch speed.

[0107] Optionally, the pitch angle difference acquisition module 810 is specifically used to: determine whether the wind power generating set is in a pitching state; when the wind generating set is in a pitching state, obtain The angular difference between the given pitch position and the actual pitch positio...

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Abstract

The embodiment of the invention provides variable-pitch control method and device for a wind generating set, electronic equipment and a medium. The method comprises the steps of acquiring an angle difference value between a given variable-pitch position and an actual variable-pitch position of the wind generating set; obtaining a variable-pitch speed difference value according to the angle difference value and correction time; and determining a new given variable-pitch speed according to an original given variable-pitch speed and the variable-pitch speed difference value, and carrying out variable-pitch control on the wind generating set according to the new given variable-pitch speed. The method can prevent the over-adjustment of a variable-pitch system and the production of a pitch anglefollowing error.

Description

technical field [0001] The present application relates to the technical field of wind power generation, and in particular, the present invention relates to a pitch control method, device, electronic equipment and medium of a wind power generating set. Background technique [0002] With the increase of wind turbine capacity, variable pitch control, variable speed and constant frequency advanced wind power technology is the current mainstream control method of wind turbines. The generator is an important device for converting wind energy into electrical energy in a wind turbine. It not only directly affects the quality and efficiency of the output electrical energy, but also affects the performance of the entire wind power conversion system and the complexity of the device structure. At the same time, wind energy is a low-density energy source with the characteristics of instability and randomness. Control technology is the key to the safe and efficient operation of wind turbi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/328Y02E10/72Y02P70/50
Inventor 苏素平
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD