Power feature authentication method based on transmission features of wind turbine generator unit

Abstract

The invention relates to a power feature authentication method based on transmission features of a wind turbine generator unit. An energy transmission model is established for power feature authentication through obtaining of operation data of the unit within a certain period. According to the power feature authentication method based on transmission features of the wind turbine generator unit, the unit energy transmission process is used as the research object, the universal energy transmission model is established based on the losses, in the energy transmission process, of all the components, the wind speed is calculated and deduced, fitting of an actual power curve is conducted, the actual curve is compared with a theoretical curve generated during unit design, the difference of the two curves is quantitatively calculated through a certain method, and then a full set of unit power curve authentication method and technology routes is formed; and a method which is accurate in evaluation and high in reliability and practicability is provided for performance evaluation of the unit.

Description

technical field [0001] The invention relates to a power evaluation method of a wind turbine, in particular to a power characteristic verification method based on the transmission characteristics of a wind turbine. Background technique [0002] At present, relevant research institutions at home and abroad have carried out relevant research on the power characteristic test of wind turbines. In 2005, IEC released the IEC 61400-12-1 standard, which stipulates the relevant standards for the power characteristic test of wind turbines, including test preparation, test procedures, Later data processing, etc. In 2012, this standard was introduced into China and implemented as a national standard, the standard number is GB / T 18451.2-2012 "Wind Turbine Power Characteristics Test". Due to the relatively high requirements for the relevant implementation conditions of the standard, such as the requirement to set up wind measuring towers in certain specific sectors and locations in front o...

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Problems solved by technology

[0004] 1) The influence of the air density of the wind turbine is not considered, and the curve is not accurate enough;

[0005] 2) Correct the power curve with historical data, so that the curve has the operating characteristics of the unit, reducing the credibility and promotion;

[0006] 3) One machine, one measurement increases the workload, which is not conducive to large-scale promotion;

[0007] 4) It is difficult to achieve a complete consensus on specific measurement methods and data processing

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