三元混合绝缘油变压器过载能力分析  

Overload capacity analysis of three-element mixed insulating oil transformer

作　　者：刘梦娜 江翼[1,2] 罗传仙 徐惠[1,2] 邱虎 张静 LIU Mengna;JIANG Yi;LUO Chuanxian;XU Hui;QIU Hu;ZHANG Jing(Wuhan NARI Co.,Ltd.,State Grid Electric Power Research Institute,Wuhan 430074,China;Nanjing NARI Group Corp(State Grid Electric Power Research Institute),Nanjing 211000,China)

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [2]南瑞集团(国网电力科学研究院)有限公司,江苏南京211000

出　　处：《绝缘材料》2023年第1期77-81,共5页Insulating Materials

基　　金：国家电网公司科技项目(524625170032)。

摘　　要：针对一种新型三元混合绝缘油,研制出具有高过载能力的混合绝缘油变压器。在对混合绝缘油和矿物绝缘油配电变压器的耐热等级和温升限值进行分析的基础上,结合样机的相关计算与试验检测,对不同过载能力的绝缘油配电变压器温升进行对比,给出了混合绝缘油配电变压器的结构优化建议,并进行了成本对比。结果表明:采用耐高温的新型三元混合绝缘油以及DPE绝缘纸或Nomex T910绝缘纸组成的混合绝缘系统,可将油浸式配电变压器的过载能力由1.5倍提升至1.75倍,相应成本增加不到8%,具有很强的实用性和经济性。Aimed at a new type of three-element mixed insulating oil, we developed a mixed insulating oil transformer with high overload capacity. On the basis of the analysis on the heat resistance grade and temperature rise limit of the mixed insulating oil transformer and mineral insulating oil transformer, the temperature rise of insulating oil distribution transformer with different overload capacity was compared combined with the relevant calculation and test detection of the model machine. Some structural optimization suggestions of mixed insulating oil distribution transformer were proposed and the cost was compared. The results show that the overload capacity of oil-immersed distribution transformer can increase from 1.5 times to 1.75 times by using the hybrid insulation system composed of a new type of high temperature resistant ternary mixed insulating oil and DPE insulating paper or Nomex T910 insulating paper, and the corresponding cost increases less than 8%, which has strong practicability and economy.

关 键 词：油浸式配电变压器 混合绝缘油 过载能力 结构优化 

分 类 号：TM421[电气工程—电器]