Insulation Condition Assessment of Transformer Bushing Based on Fuzzy Comprehensive Evaluation

doi:10.11930/j.issn.1004-9649.20160400

Abstract

Abstract: 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.

Key words: transformer bushing, condition assessment, fuzzy comprehensive evaluation, insulation condition, variable weight

CLC Number:

TM85

LI Zhichao, LI Weiguo, XIA Yu, ZHANG Shuqi, TANG Hao, JIA Pengfei, CHEN Shaojun. Insulation Condition Assessment of Transformer Bushing Based on Fuzzy Comprehensive Evaluation[J]. Electric Power, 2018, 51(4): 22-26,60.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.20160400

https://www.electricpower.com.cn/EN/Y2018/V51/I4/22

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