Application of Combination Weighing and Outranking Relation Method in Evaluation of Power Quality

摘要

A New Decision-making (MADM) method based on combination weighing and outranking relation is presented by introducing combination weighing to traditional outranking relation in the paper. Firstly, the subjective weights and objective weights of power quality indices are decided by FAHP and entropy methods. Secondly, uncertainty of the data is expressed by thresholds according to Decision-maker (DM)'s risk attitudes by outranking relation. Thirdly, the power quality of all observation points are compared in pairs, the score of all observation points are calculated under single attribute and the results are expressed with index of concordance and discordance. Finally, the degree of outranking is calculated by integrating the index of concordance and discordance. The final ranking of the power quality of all observation points are obtained by net credibility degree. The effectiveness of the method is validated by simulation results.