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Adaptive Voltage Control for Wind Turbines

A wind turbine, adaptive control technology, applied in the control of wind turbines, wind turbines, wind power generation, etc., can solve the problems of voltage reduction, loss of power, tripping of auxiliary components, etc.

Inactive Publication Date: 2011-12-28
德风公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Voltage sags occur when load increases or loss of generation or transmission infrastructure causes a reduction in voltage, which results in a further reduction in reactive power from capacitor and line charging and a further reduction in voltage
If the drop continues, these voltage reductions cause auxiliary components to trip, causing further voltage reduction and loss of power
The result is a gradual and uncontrollable drop in voltage, all because the power system is not able to provide the reactive power required for the reactive power demand

Method used

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  • Adaptive Voltage Control for Wind Turbines
  • Adaptive Voltage Control for Wind Turbines
  • Adaptive Voltage Control for Wind Turbines

Examples

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Embodiment Construction

[0067] While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and described in detail herein. It should be understood, however, that there is no intention to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and other modifications falling within the spirit and scope of the invention as defined by the claims. Another example.

[0068] figure 1is a schematic diagram of an embodiment of an exemplary wind turbine 200 that may be configured to provide adaptive voltage control and / or adaptive power factor (PF) control. In operation, wind imparts energy to blades 201 of wind rotor 202 , which in turn imparts a mechanical torque on the shaft of synchronous generator 214 . The synchronous generator 214 is directly connected to the grid 224 to provide power to the electrical equipment using the grid 22...

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Abstract

Systems and methods for setting up and / or operating wind turbines to adaptively control the voltage of a grid are provided herein. In one or more embodiments, a method for identifying the state of the grid (e.g., fluctuations due to variable consumer loads on a weak grid) and adaptively adjusting the voltage control scheme to "ignore" the Methods and systems for state-induced voltage changes. Additionally, other features of the invention include voltage control with active power derating for the wind turbine and power factor control with active power derating for the wind turbine. The active power derating features of the present invention may depend on the physical characteristics of the synchronous generators associated with the wind turbine.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority under 35 U.S.C. § 119((e) to pending U.S. Provisional Patent Application Serial No. 61 / 148,765, filed January 30, 2009, entitled "ADAPTIVE VOLTAGECONTROL FOR WIND TURBINES," And its entire disclosure is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to the field of wind turbines, and more particularly to controlling the operation of wind turbines based on grid conditions. Background technique [0004] When compared to the total power generation capacity of the grid, wind power systems have only been used on a small scale in the past. The term commonly used to describe the relative value of wind power generation is "penetration". Penetration is the ratio of wind power generation to the total available generation used on the grid. Previously, even in those places with the highest wind power generation, penetrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18F03D7/04
CPCH02J3/1885Y02E10/723F03D7/044Y02E10/725F05B2220/70642Y02E10/763F03D7/046Y02E40/32H02J3/386F03D7/0284H02J2300/28H02J3/381Y02E10/76Y02E10/72Y02E40/30H02J3/42H02J3/48H02J3/50
Inventor K-F·斯塔佩菲尔德
Owner 德风公司
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