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Method to de-ice wind turbines of a wind park

A technology for wind turbines and wind farms, which is applied in the control of wind engines, wind engines, wind turbine components, etc., and can solve the problems of expensive sensors

Inactive Publication Date: 2014-09-17
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Protecting a sensor from bad weather while maintaining its accuracy is very expensive
[0013] Even using specifically designed sensors that allow for bad weather is expensive

Method used

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  • Method to de-ice wind turbines of a wind park

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Embodiment Construction

[0039] The wind park WP comprises five wind turbines WT1, WT2, WT3, WT4 and WT5 assigned to the wind park WP.

[0040] Wind turbines WT1 , WT2 and WT5 produce electrical output powers of Pout1 = 1.5 MW, Pout2 = 1.5 MW and Pout5 = 1.5 MW.

[0041] A power value of eg 1.5 MW is considered to exceed a first power threshold value PTV1 of 1.2 MW.

[0042] Wind turbines WT3 and WT4 produce electrical output powers of Pout3 = 0.6 MW and Pout4 = 0.6 MW.

[0043] A power value of eg 0.6 MW is considered to fall below a second power threshold value PTV2 of 0.8 MW.

[0044] The output powers Pout1 to Pout5 of the wind turbines WT1 to WT5 are reported to the power controller PC of the wind park WP.

[0045] The power controller PC detects that the output powers Pout1 , Pout2 and Pout5 of the wind turbines WT1 , WT2 and WT5 exceed a first power threshold value PTV1 .

[0046] Since this is the expected power output, no de-icing scheme was applied to these three wind turbines.

[0047] ...

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Abstract

The invention relates to a method of de-icing wind turbines of a wind park. At least a first wind turbine (WT1) and a second wind turbine (WT3) are assigned to the wind park (WP). The first wind turbine (WT1) produces a first electrical output power (Pout1), which exceeds a first power threshold value (PTV1). The second wind turbine (WT3) produces a second electrical output power (Pout3), which falls below a second power threshold value (PTV2). The first output power (Pout1) and the second output power (Pout3) are reported to a power controller (PC)of the wind park (WP). The power controller (PC) detects that the first electrical output (Pout1) power exceeds the first power threshold value (PTV1) and the power controller (PC) detects that the second electrical output power (Pout3) falls below the second power threshold value (PTV2). The power controller (PC) initiates a de-icing procedure being executed at the second wind turbine (WT3) until the second electrical output power (Pout3) exceeds the first threshold value (PTV1).

Description

technical field [0001] The invention relates to a method for deicing wind turbines of a wind park. Background technique [0002] A wind park comprising a plurality of wind turbines is connected to a grid, whereby the electrical output power of the wind park is fed into the grid. [0003] The electrical output of a wind park may be reduced by bad weather conditions, especially by ice accumulating on the rotor blades of the wind turbines of the wind park. [0004] Several prior art methods and procedures are known which are used to detect ice growth at rotor blades and remove the ice if possible. [0005] Ice detection methods often use sensors to measure weather conditions like temperature, wind speed, wind direction, chill factor, humidity, etc. [0006] Weather condition measurements are collected and compared to the measured power output of an individual wind turbine for the wind turbine's expected power output generation. [0007] Based on this comparison, a de-icing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00
CPCF03D7/028F05B2260/80F03D11/0025F05B2270/335F05B2270/111F05B2270/1033F03D7/0224F05B2260/20F03D7/048F03D80/40Y02E10/72
Inventor D.S.延森
Owner SIEMENS AG
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