第50卷第4期2023年4月Vol.50，No.4Apr.2023湖南大学学报（自然科学版）JournalofHunanUniversity（NaturalSciences）电磁式灭弧空气炮理论研究杨廷方，罗屹豪†，周西杰，刘云辉（长沙理工大学电气与信息工程学院，湖南长沙410114）摘要：针对传统保护间隙的空气间隙无法快速熄弧、线路的跳闸率较高问题，研究、设计了电磁式灭弧空气炮.该装置利用电磁活塞理论，喷射出高速气团.高速气团会冲击电弧，带走电弧的热量并拉细电弧，显著增强电弧的去游离作用，迫使其在短时间内熄灭.且电磁式灭弧空气炮的活塞尾部安装有弹簧机构，能够在灭弧后自动将活塞复位，为下一次动作做准备.通过有限元法进行仿真计算，加装电磁式灭弧空气炮的保护间隙能在16ms内将电弧拉细到原来粗细程度的1/8、弧心温度降低至1/3，显著增强去游离作用，迫使其迅速熄灭.因此电磁式灭弧空气炮具有较强的熄弧能力，且具备一定的自能性，能有效降低雷击跳闸率、提升电能质量.关键词：磁场效应；有限元法；计算机仿真；磁流体力学；电弧中图分类号：TM853文献标志码：ATheoreticalResearchonElectromagneticArcingAirCannonYANGTingfang，LUOYihao†，ZHOUXijie，LIUYunhui（SchoolofElectricalandInformationEngineering，ChangshaUniversityofScienceandTechnology，Changsha410114，China）Abstract：Aimingattheproblemthatthetraditionalprotectiongapcannotextinguishtheelectricarcquicklyandthetriprateofthelineishigh，thispaperstudiesanddesignstheelectromagneticarcextinguishingaircannon.Thedeviceusestheelectromagneticpistontheorytoejecthigh-speedairmasses.Thehigh-speedairmasscanimpactthearc，takeawaytheheatofthearcanddrawthearcfine，enhancingtheremoving-freeeffectofthearcandforcingittobeextinguishedquickly.Andthespringmechanisminstalledatthepistonendoftheelectromagneticarcextinguishingaircannoncanautomaticallyresetthepistonaftertheelectricarcextinguishingandbereadyforthenexttime.Accordingtothefiniteelementmethodsimulation，thearccanbedrawnto1/8ofitsoriginalthicknessandtheelectricarccentertemperaturecanbereducedto1/3within16msduetotheinstallationoftheprotectiongapofelectromagneticarcingaircannon，whichsignificantlyenhancestheremovingfreeeffectandforcesthearctobeextinguishedquickly.Therefore，theele...
