EVALUATION MODEL OF POWER GENERATION PERFORMANCE FOR WIND TURBINE BASED ON ENTROPY WEIGHT METHOD AND CONTINGENCY THEORY

摘要

Assessing the performance of the wind turbine (WT) plays an important role in reducing operation and maintenance costs, optimizing maintenance strategies, and improving WT generating capacity. Accurate performance evaluation of the WT has become a research hotspot. Therefore, this paper proposes a performance evaluation model for the WT based on Entropy Weight Method (EWM) and Contingency Theory (CT). First, the wind speed and wind power pairs are cleaned by using the Optimal Interclass Variance-Kernel Density Estimation (OIV-KDE). Secondly, the indicators, normalized according to the concept of deterioration degree, are proposed and calculated to evaluate the power generation performance. Then, build a framework structure that reflects the power generation performance of the WT. Finally, according to the EWM and CT, the comprehensive weights are obtained to fuzzily evaluate the power generation performance of the WT. Based on the operation data of six 1.5MW wind turbines (WTs), the paper analyses the power generation performance evaluation results of WTs. The results show that the model is correct and effective.