植物绝缘油-纸复合绝缘热老化特性研究  

Study on Thermal Ageing Characteristics of Vegetable Insulating Oil-paper Compound Insulation

作　　者：蔡胜伟[1] 陈江波[1] 周翠娟[1] 李辉[1] 王先锋[2] 

机构地区：[1]中国电力科学研究院,武汉430074 [2]桂林电器科学研究院有限公司,广西桂林541004

出　　处：《绝缘材料》2015年第2期56-60,共5页Insulating Materials

基　　金：国家自然科学基金项目(51307154);中国电力科学研究院创新基金项目

摘　　要：为研究植物油-纸绝缘的热老化产物生成规律和绝缘特性,以植物绝缘油和矿物绝缘油分别与绝缘纸组成油-纸复合绝缘,在110℃和130℃下进行加速热老化试验。结果表明:随着老化时间的延长,两种绝缘油的酸值、糠醛含量、油中溶解气体含量均增加,闪点和界面张力均下降;相同老化条件下,植物绝缘油的酸值、产气量比矿物绝缘油的大,植物绝缘油中糠醛含量少于矿物绝缘油。To study the thermal ageing products and insulation characteristics of vegetable insulating oil-paperinsulation, we conducted accelerated ageing experiments on two oil-paper compound insulations under110 ℃ and 130 ℃, which were composed of vegetable insulating oil and insulation paper, mineral insulatingoil and insulation paper, respectively. The results show that with the increase of ageing time, the acidvalue, furfural content, and dissolved gases content of the two insulating oils increase, and the flashpoint and interfacial tension decrease. Under the same ageing condition, the acid value and dissolved gascontent of the vegetable insulating oil are greater than that of the mineral insulating oil, and the furfuralcontent in vegetable insulating oil is less than that in mineral insulating oil.

关 键 词：植物绝缘油 矿物绝缘油 热老化 油-纸复合绝缘 对比 

分 类 号：TM214[一般工业技术—材料科学与工程]