Wind turbine generator heat dissipation system evaluation and early warning method

Abstract

A wind turbine generator cooling system evaluation and early warning method comprises the following steps that a generator A is selected as a reference generator, and a parameter benchmark is determined; determining a standard working condition, namely an effective data range, and enabling the generator heat dissipation system to be in a repeated start-stop state; calculating start-stop period parameters of the heat dissipation system under the standard working conditions of the reference generator A and the generator B to be evaluated; and comparing the to-be-evaluated generator B with the start-stop period of the heat dissipation system of the reference fan A to obtain the performance condition of the heat dissipation system of the generator B, and comparing the to-be-evaluated generatorB with the historical data of the to-be-evaluated generator B to obtain the performance change trend of the heat dissipation system of the generator B. According to the method, the defects in the prior art are overcome, the start-stop parameters of the generator heat dissipation system can be automatically calculated by collecting and processing the SCADA data, so that the performance or change trend of the generator heat dissipation system in a certain time period is obtained, and early warning is carried out on the generator heat dissipation system.

Description

technical field [0001] The invention relates to the technical field of wind power heat dissipation performance evaluation, in particular to an evaluation and early warning method for the heat dissipation system of a wind turbine generator. Background technique [0002] The generator is an important part of the wind turbine. The quality of the generator system directly affects the calorific value of the generator, which in turn affects the power generation efficiency of the wind turbine. Since there is no perfect method for effective monitoring and evaluation of the cooling system of the generator in service, the health status of the cooling system of the generator cannot be understood in time, which will cause certain troubles to the maintenance, maintenance, repair and preventive replacement of the cooling system of the generator . [0003] During the working process of the generator, a large amount of heat will be generated in the winding, and the heat needs to be dischar...

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Problems solved by technology

[0004] Usually, the heat dissipation performance of the generator is judged by observing the appearance of the heat dissipation system or counting the average temperature and maximum temperature of the generator. The accuracy is not high and the efficiency is low, which is not conducive to long-term monitoring and is not conducive to the next step of the wind field.

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