Over-rating control of wind turbines and power plants

A technology for wind turbines and power stations, applied in the control of wind turbines, wind power generation, engine control, etc., can solve problems such as power output reduction, and achieve multi-benefit effects

Active Publication Date: 2013-08-07
VESTAS WIND SYST AS
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Problems solved by technology

Thus, for example, in very turbulent wind conditions, the power output may b

Method used

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  • Over-rating control of wind turbines and power plants
  • Over-rating control of wind turbines and power plants
  • Over-rating control of wind turbines and power plants

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[0028] The description that follows discusses the general control of the turbines in a wind turbine plant, the control of the output power of these turbines, and the control of factors such as speed and torque within each turbine based on set points provided by the plant controller. Optimization of operating parameters. It describes the control regime proposed by the multi-turbine controller and sent as commands to the individual turbines, and the control regime implemented by the individual turbines and then transmitted to the multi-turbine controller, such as a power plant controller.

[0029] FIG. 1 schematically shows a conventional wind power plant 10 comprising a plurality of wind turbines 20 each in communication with a power plant controller PPC 30 . The PPC 30 can communicate bi-directionally with each turbine. These turbines output power to grid junction 40 (as represented by bold line 50).

[0030] In operation, and assuming wind conditions permit, each wind turbi...

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Abstract

A wind turbine power plant comprises a plurality of wind turbines, each having a rated output and under the control of a power plant controller. The power plant also has a rated output which may be over-rated in response to one or more electricity pricing data, power plant age and operator demand. This may comprise a schedule of output set point changes which effect seasonal or intraday changes in electricity prices or which reflect aging of the power plant. It may also reflect the price of electricity on spot or futures markets. Once the over-rating of the power plant has been set, the output may be increased by over-rating individual turbines or operating turbines at rated power if the sum of the rated outputs of the turbines exceeds or is equal to the new power plant output set point.

Description

technical field [0001] The present invention relates to over-rating control in wind turbines and wind power plants, and in particular to control methods that enable one or more wind turbines in a power plant to produce more power than the rated output depending on various factors and device. Background technique [0002] The rated power of a wind turbine is defined in IEC 61400 as the maximum continuous electrical power output that the wind turbine is designed to achieve under normal operating and external conditions. Large commercial wind turbines are typically designed for a life of 20 years, and their rated power output takes this expected life into account. [0003] Wind turbines are usually operated as part of a wind power plant comprising a plurality of wind turbines. US-A-6724097 discloses the operation of such a wind power plant. The output of each turbine is determined, and the one or more turbines are controlled such that the output power of the one or more turb...

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Application Information

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IPC IPC(8): F03D7/02
CPCF03D7/028Y02E10/723Y02E10/725H02P9/008F05B2270/1033F03D7/048F03D7/0292F05B2270/332Y02E10/72F03D9/255
Inventor C·斯普鲁斯J·特纳M·埃文斯R·鲍耶
Owner VESTAS WIND SYST AS
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