基于Fisher判别法的油纸绝缘老化阶段识别  

Identifying Different Aging Stages of Oil-Paper Based on Fisher Discriminant Method

作　　者：杨丽君[1] 廖瑞金[1] 孙才新[1] 梁帅伟[1] 程涣超[1] 

机构地区：[1]重庆大学高电压与电工新技术教育部重点实验室,重庆400044

出　　处：《电工技术学报》2005年第8期33-37,共5页Transactions of China Electrotechnical Society

基　　金：国家杰出青年科学基金资助项目(50425722)

摘　　要：本文首次将判别分析法用于油纸绝缘老化程度的识别,提出了一种基于Fisher判别法和多个局部放电特征参量的油纸绝缘老化程度识别方法。以30个老化特征向量为经验样本,构造判别函数,将十一维特征向量映射到二维平面上,通过对其他30个样本进行老化程度的判别分析,结果表明采用Fisher判别函数能够对新样本的绝缘状态作出合理的判断。In this paper, the discriminant analysis method is introduced to identify the aging stages of oil-paper. An identification method based on Fisher discriminant function and multiple PD characteristic parameters is proposed. The 30 vectors distracted from 6 samples at 5 different aging stages are used as reference samples to obtain Fisher discriminant functions. The characteristic vector with eleven-dimension is mapped to two-dimension and the other 30 vectors analyzed as samples need to be identified using discriminant functions. It is concluded that a reasonable result can be achieved using the Fisher discriminant functions.

关 键 词：判别法 绝缘老化 局部放电 

分 类 号：TM835[电气工程—高电压与绝缘技术]