基于可拓学的电能质量综合评价

将可拓学与层次分析法相结合,提出了电能质量评估的新方法。用可拓学中的物元理论对电能质量进行物元分析,建立3种物元模型,然后结合可拓学中的相关函数理论,将3种物元模型的关系进行量化,形成关联值矩阵;用层次分析法(AHP)得到电能质量各指标的权重;最后结合关联值矩阵和指标权重能够得到最终的电能质量综合评价等级。用基于可拓学的综合评价方法对公共连接点(PCC)的电能质量进行了综合评价,实际算例表明这种方法能够有效地区分电能质量等级,并对电能质量进行定性和定量评价。

Synthetic evaluation of power quality based on extenics

A power quality evaluation method combining extenics and AHP(Analytic Hierarchy Process) is presented.Three matter-element models are set based on power quality analysis using matter-element theory of extenics,and quantified to form relationship matrix using relation-function theory of extenics.The target weights are figured out using AHP.The final quantitative grade of the power quality is calculated based on relation-matrix and target weights.The power quality level of synthetic evaluation is obtained by combining the relationship matrix and the target weights.As an example,the power quality of PCC(the Point of Common Coupling) is evaluated,which shows that,the proposed method can evaluate power quality quantitatively and qualitatively and distinguishes different power quality levels effectively.