中文摘要：

从电力用户的需求角度出发,提出了一种电能质量综合评估的新方法。该方法首先利用不完全的语言评价信息来描述电力用户对电能质量各技术指标的重视程度和对监测点各指标的优劣评价,然后将这些语言评价信息作为证据,利用D-S证据理论进行证据合成以确定各用户对各监测点的评价信息,最后对所有用户的评价信息进行整体评价并确定各监测点电能质量的优劣及等级。在整体评价过程中,利用冲突度指数来描述用户间的需求冲突,并以此为基础确定各用户在整体评价中的权重。所提出的电能质量综合评估方法既能体现电力用户对电能质量的不同需求,又能体现多数用户的评价意愿。算例分析证明了所提出的方法的有效性。

英文摘要：

From the perspective of customers’different demands, a novel comprehensive power quality evaluating method is presented. First, the incomplete linguistic evaluation information is used to describe the emphasis and subjective evaluation of different technical power quality indices by different customers. And then, the linguistic evaluation information is considered as evidence to determine the customers’subjective evaluation of all observation points. Finally, all customers’ subjective evaluation information is synthesized to grade the power quality of all observation points. In the synthesized processing procedure, the conflict degree exponent is defined to describe the conflict between customers, and the weights of different customers are determined based on conflict degree exponents. The proposed method not only considers different customer demands, but also embodies the evaluation opinion of most customers. The effectiveness of the proposed method is validated by case study.