Ice detection based on anemometry

Details Ice detection based on anemometry Ice detection based on anemometry

2006-12-13

2009-02-10

Patel, Harshad (Department: 2855)

Measuring and testing

Fluid flow direction

Using a fluid actuated alignment device

C073S196000, C416S039000, C416S041000

Reexamination Certificate

active

07487673

ABSTRACT:
A method for ice detection for a wind turbine is provided. The method includes providing an ice condition threshold parameter adapted for distinguishing a condition during which icing may occur and a condition during which icing may not occur, measuring a wind velocity with a first anemometer, wherein the first anemometer being of a first type, measuring a wind velocity with a second anemometer, wherein the second anemometer being of a second type, and wherein the second type is different from the first type, evaluating, for a condition during which icing may occur, a deviation of the wind velocity measured with the first anemometer and the wind velocity measured with the second anemometer, and determine whether the deviation exceeds a limit value based on a calibration conducted under a condition during which icing may not occur.

REFERENCES:
patent: 5639963 (1997-06-01), Sustare, Jr.
patent: 6619918 (2003-09-01), Rebsdorf
patent: 6890152 (2005-05-01), Thisted
patent: 7086835 (2006-08-01), Yoshida
patent: 7244100 (2007-07-01), Yoshida
patent: 7249486 (2007-07-01), Wobben
patent: 7348683 (2008-03-01), Riesberg
patent: 2005/0042093 (2005-02-01), Yoshida
patent: 2005/0044949 (2005-03-01), Wobben
patent: 2005/0169755 (2005-08-01), Yoshida
patent: 2007/0183885 (2007-08-01), Ormel et al.
patent: 1748185 (2007-01-01), None
patent: WO2004104412 (2004-12-01), None
T. Laakso et al. “State-of-the-art of wind energy in cold climate” IEA Annex XIX, Apr. 2003.
Seifert, H. “Betrieb von Windenergieanlagen unter Vereisungsbedingungen” 5. Österreichisches Windenergiesymposium, Okt. 21, 1999, St. Pölten, Österreich. Energiewerkst 51-61.
Seifert, H. “Technical Requirements for Rotor Blades Operating in Cold Climate”; Boreas VI, Apr. 9-11, 2003, Pyhä, Finland.
Schaffner B., “arWind Energy Site Assessment in Harsh Climatic Conditions, Long Term Experience in Swiss Alps”, Report Meteotest, 2002.

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