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Method, system and device for on-line computation of optimal gain of wind generation set control strategy

A technology for wind turbines and control strategies, which is applied in the control, calculation, and wind power generation of wind turbines. It can solve problems such as gain value deviations, and achieve the effects of easy implementation, improved stability, and reduced errors.

Active Publication Date: 2012-11-07
GUODIAN UNITED POWER TECH
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Problems solved by technology

Since the air density is greatly affected by the season and temperature, it is obvious that the gain value calculated by this method always has a large deviation from the actual value

Method used

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  • Method, system and device for on-line computation of optimal gain of wind generation set control strategy
  • Method, system and device for on-line computation of optimal gain of wind generation set control strategy
  • Method, system and device for on-line computation of optimal gain of wind generation set control strategy

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Embodiment Construction

[0019] see figure 1 , the BC segment in the figure is the control strategy of the wind turbine between the power grid-connected speed and the full power speed, and it is also the optimal gain value K opt The torque area to be applied.

[0020] Please refer to figure 2 As shown, the online calculation device for the optimal gain of the wind turbine control strategy includes a temperature sensor, a signal processing circuit and a single-chip microcomputer connected through a circuit. Among them, the signal processing circuit includes a signal acquisition circuit, a shaping circuit and a filter circuit, and the single-chip microcomputer is built with an online calculation system for the optimal gain of the control strategy of the wind turbine.

[0021] The optimal gain online calculation system of the wind turbine control strategy includes an ambient temperature calculation module, a system time reading module, a monthly average air temperature table, a temperature weighted ca...

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Abstract

The invention relates to a method, a system and a device for on-line computation of the optimal gain of a wind generation set control strategy. The method for on-line computation includes the steps: acquiring the real-time temperature of a peripheral environment of a wind generation set; reading system time; weighting the acquired real-time temperature with the historical monthly mean temperature of the same month according to the read system time to obtain weighted temperature; computing air density according to the weighted temperature and the local altitude; and computing the optimal gain according to the air density and characteristic parameters of the wind generation set. The temperature of the peripheral environment of the wind generation set can be measured in real time, the air density is computed by weighting according to the historically statistical monthly mean temperature, and then the optimal gain of the control strategy for speed and torque below the speed of full power is computed in an on-line manner according to the characteristics of the wind generation set, so that the wind generation set is optimized in the on-line manner, and the operating performance of the wind generation set is improved. The method, the system and the device are easy to implement, low in cost and beneficial to popularization.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an online calculation method, system and device for optimal gain of a control strategy of a wind turbine. Background technique [0002] In recent years, with the continuous development of wind power generation, the installed capacity of wind farms has increased year by year, and the proportion of wind power generation has become larger and larger, and it has gradually become a conventional energy source. With the continuous improvement of the installed capacity of wind turbines, the performance requirements of the industry for wind turbines are also getting higher and higher. In the speed torque control strategy below the full speed of wind turbine power, a gain value is involved to track the maximum wind energy utilization and capture. The more consistent the gain value is with the actual wind energy resources, the more accurately the wind turbine control strategy ...

Claims

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Application Information

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IPC IPC(8): F03D7/00G06F17/50
CPCY02E10/723Y02E10/72
Inventor 汪正军张会广纪国瑞潘磊
Owner GUODIAN UNITED POWER TECH
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