固相气流防雷装置熄灭工频大电流的仿真分析和试验研究谭思源1,李籽剑2,王巨丰1,黄萍1,黄上师3(1.广西大学电气工程学院,南宁530004;2.国网湖北省电力有限公司电力科学研究院,武汉430000;3.桂林电子科技大学电气工程及自动化系,广西桂林541004)摘要:为验证固相气流灭弧装置在110kV系统中熄灭工频大电流的能力,文中首先在ComsolMutiphysics软件中将电场、流体及传热模块耦合,对高速气流与电弧的耦合发展过程进行仿真,以电导率确定电弧熄灭;其次到高压试验室开展固相气流下的40kA工频大电流灭弧试验。仿真结果表明,固相气流熄灭工频大电流电弧的时间约为4ms;试验结果证明在固相气流下6.7ms左右熄灭40kA的工频大电流电弧。由于仿真不能完全模拟实际灭弧条件,且电弧熄灭时间都小于继电保护装置动作时间,所以误差仍在可接受范围内。实际运行状况证明,该装置在实际运行中拥有熄灭工频大电流电弧的能力,且工况良好,性质稳定,能够有效降低线路的雷击跳闸率。关键词:固相气流;气流灭弧;工频大电流;线路防雷;雷击跳闸SimulationAnalysisandExperimentalResearchofPowerFrequencyHighCurrentArcExtinguishingforSolid⁃phaseAirflowLightningProtectionDeviceTANSiyuan1,LIZijian2,WANGJufeng1,HUANGPing1,HUANGShangshi3(1.SchoolofElectricalEngineering,GuangxiUniversity,Nanning530004,China;2.StateGridElectricPowerResearchInstitute,StateGridHubeiElectricPowerCo.,Ltd.,Wuhan430000,China;3.DepartmentofElectricalEngineering&AutomationGuilinUniversityofElectronicandTechnology,GuangxiGuilin541004,China)Abstract:Inordertoverifytheabilityofthesolid⁃phaseairflowlightningprotectiondevicetoextinguishthepowerfrequencyandlargecurrentin110kVsystem,theelectricfield,fluidandheattransfermodulearecoupledfirstlyinComsolMutiphysicssoftware,andthecouplingdevelopmentprocessofthehigh⁃speedflowandthearcissimulatedsotodeterminethearcextinguishingwiththeelectricalconductivity.Secondly,the40kApowerfrequencyhigh⁃cur⁃rentarcextinguishingtestunderthesolidphaseairflowisdevelopedinhighvoltagetestlaboratory.Thesimulationresultsshowthatthearctoextinguishpowerfrequencyandlargecurrentofsolid⁃phaseairflowisabout4ms.Thetestresultsprovethatthepowerfrequen...