酸值对变压器油纸绝缘系统回复电压参数影响规律研究  

Influence of acid value on recovery voltage parameters of transformer oil-paper insulation system

作　　者：王晓剑[1] 吴广宁[1] 李先浪[1] 高波[1] 彭倩[2] 赵虎[1] 

机构地区：[1]西南交通大学电气工程学院.四川成都610031 [2]国网四川省电力公司电力科学研究院,四川成都610072

出　　处：《电力自动化设备》2013年第12期133-139,共7页Electric Power Automation Equipment

基　　金：四川省电力公司项目(2011-5101-05-000842)~~

摘　　要：为研究酸值对回复电压参数的影响规律,制作一套变压器简化模型,用25#变压器油和普通纤维素纸作为油纸复合绝缘,进行老化实验。结果表明:绝缘纸中酸值与老化时间呈线性函数关系,变压器油中酸值与老化时间呈指数函数关系;回复电压最大值随绝缘纸中酸值增加呈线性规律增大,中心时间常数随绝缘纸中酸值增加呈指数规律减小,初始斜率随绝缘纸中酸值增加呈指数规律增大。A simplified model of transformer is set up to research the influence of acid value on recovery voltage parameters. 25# transformer oil and ordinary cellulose paper are used as oil-paper composite insulation in aging experiment and results show that,the relationship between the acid value of insulating paper and the aging time is a linear function while that between the acid value of transformer oil and the aging time is an exponential function;along with the increase of insulating paper acid value,the maximum recovery voltage increases linearly,the central time constant decreases exponentially and the initial slope increases exponentially.

关 键 词：变压器 回复电压法 酸值 聚合度 回复电压最大值 中心时间常数 初始斜率 模型 绝缘 

分 类 号：TM855[电气工程—高电压与绝缘技术]