基于模糊综合评判的变压器套管绝缘状态评估  

Insulation Condition Assessment of Transformer Bushing Based on Fuzzy Comprehensive Evaluation

作　　者：李志超[1,2] 李卫国 夏喻[1] 张书琦[3] 汤浩[3] 贾鹏飞[3] 陈绍君[4] LI Zhichao;LI Weiguo;XIA Yu;ZHANG Shuqi;TANG Hao;JIA Pengfei;CHEN Shaojun(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;State Grid Beijing Tongzhou Electric Power Supply Company,Beijing 101149,China;China Electric Power Research Institute,Beijing 100192,China;Electric Power Research Institute,Fujian Provincial Electric Power Co.,Ltd.,Fuzhou 350007,China)

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 [4]国网福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《中国电力》2018年第4期22-26,60,共6页Electric Power

基　　金：国家电网公司科技项目(SGFJDK00DWJS1500069)~~

摘　　要：针对变压器整体评估过于笼统的问题,构造模糊综合评判模型对变压器套管进行绝缘状态评估。针对常权模式容易使评判结果失真的问题,引入变权模式使评判结果更加接近套管的真实状况。采用降(升)半梯形分布函数作为确定关系模糊矩阵的隶属函数,应用级别特征值作为综合等级,确定套管所处的状态等级。通过实例分析,验证了模糊综合评判在变压器套管绝缘状态评估上的真实性和实用性。To solve the problem that overall assessment of transformer is too general,a fuzzy comprehensive evaluation model is constructed for transformer bushing insulation condition assessment.Due to the fact that constant weight may cause distorted evaluation,the variable weight is introduced to make the evaluation results close to the actual condition of transformer bushing,and the semi-trapezoid distribution function is adopted as a membership function to determine the fuzzy matrix.The ranking eigenvalue is used as a comprehensive rank to determine the condition level of transformer bushing.The case study verifies that the fuzzy comprehensive evaluation is reliable and practical for transformer bushing condition assessment.

关 键 词：变压器套管 状态评估 模糊综合评判 绝缘状态 变权 

分 类 号：TM85[电气工程—高电压与绝缘技术]