Wind Turbine Condition Assessment Method Based on Variable Weight Theory and Fuzzy Comprehensive Evaluation

In view of the complicated and variable operation state assessment of wind turbine operating conditions, a state assessment method based on variable weight theory and fuzzy comprehensive evaluation strategy is proposed. This method fully considers the complicated and variable operating conditions of wind turbines, the model based on variable weight theory and fuzzy comprehensive evaluation strategy was established. The state parameters of the wind turbine subsystem are comprehensively evaluated by introducing deterioration degree, and the degree of deviation of each state parameter from its normal range is quantified. On this basis, according to the theory of variable weight, the weights of some state parameters that seriously deviate from the normal range are corrected. Finally, this method was applied to the evaluation of a 1.5 MW wind turbine in Gansu Province. The results show that the method of wind turbine based on the variable weight theory and fuzzy comprehensive evaluation can evaluate the operating state of the unit, and provide the basis for the establishment of the unit maintenance and maintenance plan.