油纸绝缘老化特性的回复电压分析  

Analysis of Oil-Paper Insulation Aging Characteristics Based on Return Voltage Method

作　　者：王林[1] 彭倩[2] 周利军[1] 姚晓[2] 赵赢峰[1] 甘德刚[2] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]四川电力科学研究院,成都610072

出　　处：《绝缘材料》2012年第5期42-45,共4页Insulating Materials

基　　金：国家自然科学基金项目(51107105/E0705);四川省杰出青年基金项目(2011JQ0009)

摘　　要：对25#变压器油和普通纤维素绝缘纸板组成的油纸绝缘样品进行回复电压实验,研究了不同充电时间下回复电压最大值、初始斜率、中心时间常数等3个回复电压特征参数与老化特征气体CO和CO2含量的变化规律。结果表明:随着老化程度的增加,回复电压各特征参数与CO含量呈对数函数关系,与CO2含量呈线性关系。Return voltage method（RVM） was conducted on the insulation samples composed of 2Y transformer oil and kraft paper, and the change law between RVM characteristic parameters（the maximum of return voltage, initial slope, central time constant） and characteristic gases of carbon monoxide and carbon dioxide content at different charge time were studied. The results show that with the increase of aging degree, the three RVM parameters have a logarithmic relationship with carbon monoxide content, and a linear relationship with carbon dioxide content.

关 键 词：油纸绝缘 电介质响应 回复电压 老化 中心时间常数 油中溶解气体 

分 类 号：TM214[一般工业技术—材料科学与工程] TM215.6[电气工程—电工理论与新技术]