浸渍植物油对绝缘件影响的研究  

Influence of Impregnating Natural Ester on Insulation Parts

作　　者：黄青丹 莫文雄 宋浩永 王炜 陈于晴 HUANG Qingdan;MO Wenxiong;SONG Haoyong;WANG Wei;CHEN Yuqing(Power test and Research Institute of Guangzhou Power Supply Bureau of Guangdong Power Grid,Co.,Ltd.,Guangzhou 510410,China)

机构地区：[1]广东电网有限责任公司广州供电局电力试验研究院,广东广州510410

出　　处：《绝缘材料》2021年第9期69-72,共4页Insulating Materials

基　　金：南方电网公司科技项目(GZJKJXM20170055)。

摘　　要：首先将植物油暴露在空气中,测量其各项特性与露空时间的关系,然后观察浸渍植物油的绝缘件在空气中的氧化情况,进行传统气相干燥方法去除植物油的试验,最后采用电场解析软件对固体绝缘件在植物油变压器中的耐受场强值进行计算。结果表明:暴露在空气中后,植物油的含水量大幅增加,但其他特性变化不大,绝缘木块常温露空2个月后,表面并未产生氧化薄膜;气相干燥不能彻底除去绝缘件中的植物油;绝缘件在植物油变压器中承受的场强比同等结构矿物油变压器中高10%。Firstly,a natural ester was exposed to the air,and the relationships between its properties and exposure to air duration were measured.Then the oxidation situation of insulating part impregnated with natural ester in air was observed,and the natural ester on the insulating part was removed by traditional gas-phase drying method.Finally,the withstand field strength of solid insulating parts in natural ester transformer was calculated by an electric field analysis software.The results show that the water content of the natural ester increases significantly after exposure to air,but its other characteristics change little.There is no oxide film forming on the surface of insulating parts after exposed to room temperature for two months.The natural ester in insulating parts cannot be removed by gas-phase drying method completely.The withstand field strength of insulating parts in natural ester transformer is 10%higher than that in mineral oil transformer with the same structure.

关 键 词：植物油 氧化安定性 露空时间 耐受电压 

分 类 号：TM215.4[一般工业技术—材料科学与工程]