基于集对分析和综合赋权的电力变压器套管绝缘状态评估  

Insulation Condition Assessment for Power Transformer Bushing Based on Set Pair Analysis and Comprehensive Weights

作　　者：李志超[1,2] 李卫国 汤浩[3] 贾鹏飞[3] 张书琦[3] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]国网北京通州供电公司,北京101149 [3]中国电力科学研究院,北京100192

出　　处：《高压电器》2018年第3期115-121,共7页High Voltage Apparatus

基　　金：国家电网公司科技项目(GY71-15-042)~~

摘　　要：针对当前电力变压器套管绝缘状态评估中各评价参量存在复杂性和不确定性的问题,文中应用集对分析方法对变压器套管进行绝缘状态评估。首先选取用于套管状态评估的指标,对评估结果进行等级划分并制定响应策略,采用层次分析法和熵权法融合的综合赋权法来确定各评估指标的权重,构造联系度数学表达式来描述评估指标与状态等级之间的关联程度,建立起集对分析状态评估模型。实例计算分析表明,基于集对分析方法和综合赋权的状态评估模型能够有效反映变压器套管的绝缘状态,评估结果可为变压器的状态检修提供有效参考。For the complexity and uncertainty of the assessment indicators in insulation condition assessment of power transformer bushing, the set pair analysis is employed. First, indexes for bushing condition assessment are selected, assessment result is graded, and response strategies are worked out. Then, the weights of the assessment indexes are determined by using the comprehensive weighting method with combination of AHP and entropy method, mathematical expressions are established to describe the degree of association between evaluation criteria and state level, and a condition assessment model is built using set pair analysis. Example shows that the assessment model based on the set pair analysis and comprehensive weight can effectively reflect the insulation condition of transformer bushing, and the assessment results can be taken as a reference for transformer state-based maintenance.

关 键 词：变压器套管 绝缘状态评估 集对分析 层次分析法 熵权 

分 类 号：TM41[电气工程—电器]