高压电器2011，Vol.47Issue(5)：35-42,8.
基于模糊隶属函数的变压器多参量故障综合诊断方法
Transformer Multi-parameter Integrated Fault Diagnosis Method Based on Fuzzy Membership Function
摘要
Abstract
Oil-immersed power transformers is the most critical devices of power system, and its failure diagnosis technology is deeply concerned. By analyzing a variety of data which reflect the current transformer operation conditions and according to the current transformer fault monitoring and maintenance status in power enterprises, a relationship between failure characteristic parameters and corresponding failure modes was established based on the structure of power transformers. Fuzzy mathematical method was employed to analyze the membership function of different electric test for transformer failure mode, hence the fixity and subjectivity in selection of the membership function and its parameters were overcome. The dissolved gas was first analyzed by three-ratio method to find the cause of fault, and then the fault probability was determine by the distance between the original to the coordinate fault point. Furthermore, by combining the characteristics of various parameters and introducing the gray correlation analysis to determine their weights, the fault probability of a transformer can be evaluated via the comprehensive diagnostic model. The examples show that this method is simple and accurate.关键词
电力变压器/故障诊断/电气试验/油中溶解气体分析(DGA)/模糊隶属函数Key words
power transformer/ fault diagnosis/ electrical test/ dissolved gas analysis/ fuzzy membership function分类
信息技术与安全科学引用本文复制引用
袁蕾,杜林,吴俊美,蔡华,杨舒,丁严..基于模糊隶属函数的变压器多参量故障综合诊断方法[J].高压电器,2011,47(5):35-42,8.基金项目
国家重点基础研究发展计划(973计划)(2009CB724500)资助项目. （973计划）
