低分压下C_(5)F_(10)O/干燥空气混合气体的绝缘性能研究  

Insulation performance of C_(5)F_(10)O/dry air gas mixture under low partial pressure conditions

作　　者：夏亚龙 李富祥 毛婳 王燕 靳梦磊 唐炬[2] 肖淞[2] XIA Yalong;LI Fuxiang;MAO Hua;WANG Yan;JIN Menglei;TANG Ju;XIAO Song(State Grid Sichuan Electric Power Research Institute,Chengdu 610041,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]国网四川省电力公司电力科学研究院,四川成都610041 [2]武汉大学电气与自动化学院,湖北武汉430072

出　　处：《绝缘材料》2025年第2期9-15,共7页Insulating Materials

基　　金：四川省科技计划资助项目(2023NSFSC0297);国网四川省电力公司科技项目(52199723000K)。

摘　　要：为评估C_(5)F_(10)O/干燥空气混合气体在低分压条件下替代现有干燥空气或氮气应用于绝缘设备的可行性,本研究系统分析了C_(5)F_(10)O/干燥空气混合气体的绝缘性能。结果表明:在准均匀电场下,C_(5)F_(10)O分压为5~10 kPa时,C_(5)F_(10)O/干燥空气混合气体的绝缘强度分别为相同条件下干燥空气和氮气的1.1~1.9倍和1.4~2.3倍,表明即使在低分压下,C_(5)F_(10)O/干燥空气混合气体仍表现出较强的绝缘性能,相较于干燥空气或氮气具有技术优势。此外,低分压下C_(5)F_(10)O/干燥空气混合气体在多次击穿测试中表现出良好的稳定性,击穿电压与击穿次数的拟合曲线斜率接近于零,表明其绝缘性能未发生显著劣化。In order to assess the feasibility of using C_(5)F_(10)O/dry air gas mixture to replace existing dry air or nitrogen in insulation equipment under low partial pressure conditions,we analyzed the insulation performance of C_(5)F_(10)O/dry air gas mixture systematically.The results show that in a quasi-uniform electric field,when the partial pressure of C_(5)F_(10)O is 5-10 kPa,the insulation strength of the C_(5)F_(10)O/dry air gas mixture is 1.1-1.9 times and 1.4-2.3 times bigger than that of dry air and nitrogen under the same condition,respectively,which indicates that even at low partial pressures,the C_(5)F_(10)O/dry air still demonstrates strong insulation performance and has technical advantages compare to dry air or nitrogen.Furthermore,the C_(5)F_(10)O/dry air shows good stability in multiple breakdown tests,and the slope of fitting curves between breakdown voltage and breakdown times approaches zero,indicating that its insulation performance has not significantly deteriorated.

关 键 词：C_(5)F_(10)O/干燥空气 绝缘性能 气体绝缘 SF_(6)替代气体 击穿电压 

分 类 号：TM213[一般工业技术—材料科学与工程]