中文摘要：

对电能质量进行综合评价是电能按质论价和评估点考核奖惩决定的主要依据之一。提出了改进变权物元可拓模型的电能质量综合评价模型,该模型对物元可拓模型的经典域和待评物元以及最大隶属度准则进行了改进,以克服其在电能质量综合评价中的局限性和不足之处;同时,运用变权理论确定了各评级指标的权重,减少了电能质量评价时的主观因素以及体现了评价对象在综合评价中的主动参与。以某110 kV变电站母线实测数据为例,评价结果显示其电能质量等级为合格,但偏向于不合格等级的程度较大。算例结果表明了该模型用于电能质量综合评价的有效性。

英文摘要：

As for the pricing by electrical energy quality and the decision of rewards and penalties based on the examination at assessment point,Comprehensive evaluation on power quality is one of the principal foundations.A comprehensive power quality evaluation model based on improved matter-element extension model with variable weight,in which the classical domain of matter-element extension model and the maximum membership criterion are improved to remedy its boundedness and defects in the evaluation of power quality,is proposed.Meanwhile,applying variable weight theory the weights of all rating indices are determined to reduce the influence of subjective factors during the power quality evaluation and incarnate the active participation of evaluated objects during the comprehensive evaluation.Taking measured data form busbar of a certain 110kV for example,the evaluation result shows that the grade of power quality is qualified but far from being satisfied.Case study shows that the proposed model is effective for comprehensive evaluation of power quality.