Load and performance testing method and device used for megawatt wind generation set

Abstract

The invention discloses a load and performance testing method and device used for a megawatt wind generation set. The load and performance testing method comprises the steps of: performing data sampling on a main control system of a tested megawatt wind generation set respectively at different wind speeds; sampling appointed time at each wind speed to obtain multiple groups of sampling data; obtaining a measured power curve, a measured variable pitch driving torque curve and a measured off-course driving torque curve based on the multiple groups of the sampling data, and respectively generating theoretical curves corresponding to the measured curves; judging whether the test passes based on the condition whether a comprehensive numerical error between the three measured curves and the theoretical curves is smaller than an appointed threshold at the same time. The load and performance testing device comprises a wind generation set data sampling module corresponding to the method, a measured curve generation module, a theoretical curve generation module and a curve comparison analysis module. The load and performance testing method and device used for the megawatt wind generation set have the advantages of high accuracy, good reliability, short testing time, low implementation cost, simple and practical performances, good universality, easy project implementation and high safety.

Description

technical field [0001] The invention relates to the technical field of load and performance testing of wind turbines, in particular to a load and performance test method and device for megawatt wind turbines. Background technique [0002] With the rapid development of the wind power industry, the power level and size of wind turbines are getting larger and larger, and the increase in power level and size has an increasing impact on the life and performance of wind turbines. Whether the safety and performance of the wind turbines meet the design requirements is the current issue hot issues. Therefore, it is of great significance to carry out load test and performance test on the unit to verify the rationality of the design, but it takes a very high time and cost to conduct the test completely in accordance with the standard requirements. For this reason, the present invention proposes a load and performance testing method and device for a megawatt wind turbine. The system u...

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Problems solved by technology

The advantage of this method is that through long-term testing, the power characteristics and load characteristics of the unit can be understood over time, and the availability and load of the wind turbine can be verified, and the problem of parameter setting can be found, and then the operation of the wind turbine can be analyzed. Optimization, but in actual measurement, it takes a very high time and cost to test completely in accordance with the standard requirements

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