Power quality assessment method based on improved critic-TopSIS
With the grid connection of wind,solar and hydropower and the sensitivity of user-side equipment to power,the quality of power needs to be more reasonable evaluation.In this paper,a decision-making model for power quality evaluation is established based on improved critic-TopSIS.First of all,weight is given to indicators through the operation of data by CRITIC method,and the weight value obtained is not affected by subjective con-sciousness so that it is more objective and accurate.Then,weighted generalized Mahalanobis distance is used to re-place Euclidean distance.The improved TOPSIS method can solve the problems of irreversibility of covariance ma-trix,importance difference and correlation among indicators,and the evaluation results are more reasonable and ac-curate.Finally,the comprehensive evaluation model is substituted into five monitoring points,and the results show that the model can get a relatively reasonable ranking,which provides a new idea for evaluating power quality.