Influence of spacer insulator material temperature characteristics on its electric properties
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摘要
Spacer insulators are important insulating component of gas insulated switchgear(GIS). In order to analyze the influence of spacer insulator materials temperature characteristics on the electric performance, we tested the temperature distribution under work condition and the temperature characteristics of the material's relative permittivity. Then established a spacer insulator simulation model in finite element numerical simulation software to calculate its temperature and electric field. Using the temperature test results as a reference to verify the temperature calculation, and in order to analyze changes of the electric field along the surface of the spacer insulator, the temperature characteristics of relative permittivity have to be considered. Through the experimental research and simulation analysis, we found that the temperature characteristics of the spacer insulator materials have great impacts on the spacer insulator performance. When the temperature increases, the material relative permittivity also increases. In the low-temperature region of spacer insulator, the electric field intensity along the surface increases, so the electrical performance deteriorates. The conclusion of this paper can provide an important reference for further research about spacer insulator's working performance analysis.
Spacer insulators are important insulating component of gas insulated switchgear(GIS). In order to analyze the influence of spacer insulator materials temperature characteristics on the electric performance, we tested the temperature distribution under work condition and the temperature characteristics of the material's relative permittivity. Then established a spacer insulator simulation model in finite element numerical simulation software to calculate its temperature and electric field. Using the temperature test results as a reference to verify the temperature calculation, and in order to analyze changes of the electric field along the surface of the spacer insulator, the temperature characteristics of relative permittivity have to be considered. Through the experimental research and simulation analysis, we found that the temperature characteristics of the spacer insulator materials have great impacts on the spacer insulator performance. When the temperature increases, the material relative permittivity also increases. In the low-temperature region of spacer insulator, the electric field intensity along the surface increases, so the electrical performance deteriorates. The conclusion of this paper can provide an important reference for further research about spacer insulator's working performance analysis.
Spacer insulators are important insulating component of gas insulated switchgear(GIS). In order to analyze the influence of spacer insulator materials temperature characteristics on the electric performance, we tested the temperature distribution under work condition and the temperature characteristics of the material's relative permittivity. Then established a spacer insulator simulation model in finite element numerical simulation software to calculate its temperature and electric field. Using the temperature test results as a reference to verify the temperature calculation, and in order to analyze changes of the electric field along the surface of the spacer insulator, the temperature characteristics of relative permittivity have to be considered. Through the experimental research and simulation analysis, we found that the temperature characteristics of the spacer insulator materials have great impacts on the spacer insulator performance. When the temperature increases, the material relative permittivity also increases. In the low-temperature region of spacer insulator, the electric field intensity along the surface increases, so the electrical performance deteriorates. The conclusion of this paper can provide an important reference for further research about spacer insulator's working performance analysis.
引文
[1]Hawley R(1968)Solid insulators in vacuum-a review.Vacuum,18(7):383-390
[2]Zhou Y,Wei J(2010)Research of Dielectric and Mechanical Performance of 1100 kV spacer.In:2010 Transmission Annual Meeting,Apr.2010
[3]Liu Y(2013)Research of Design ideas of spacer.Electrical Manufacturing,Vol.8,pp:48-52
[4]Chen Y,Cui B,Wu Y et al(2015)Study of improving mechanical strength for 1100 kV spacer insulator.High Voltage Apparatus,51(7):52-56
[5]Zhao W(2005)Probe on design method of basin spacer.Huatong Technology,24(3):27-30
[6]Tian H,Hao L,Liu S et al(2013)Research of high-performance epoxy casting material for GIS Insulating part.Insulating Materials,46(3):9-13
[7]Lee KY,.Lee KW,Choi YS et a(2005)Improved thermal,structural and electrical properties of epoxy for use at high voltages.IEEE Transactions on Dielectrics and Electrical Insulation,12(3):566-572
[8]Euntala J(2006)Simulation of electromagnetic shielding in COMSOL Multiphysics environment.In:Proceedings of the COMSOL Users Conference,2006
[9]Ohki Y,Yahagi K(1975)Temperature dependence of surface flashover voltage polyethylene in vacuum.Journal of Applied Physics,46(8):3695-3696
[10]Craig MH(1993)Flashover of lnsulation in Vacuum:Review of the Phenomena and Techniques to improve Hold off Voltage.IEEE Transactions on Dielectrics and Electrical Insulation,28(4):512-527
[11]Grishutin GS,Zhurtov VM,Pokrovs.AS(1984)Influence of Hydrocarbon Compounds on the Electric Strength of an Insulator.Proceeding of the 11th International Symposium on Discharge and Electric Insulation in Vacuum,pp:339-341
[12]Garniwa,I(2003)Critical flashover voltage mechanism and prediction of resin epoxy insulator on temperature changes.Properties and Applications of Dielectric Materials,2003.In:Proceedings of the 7th International Conference,Vol.1,pp:397-400
[2]Zhou Y,Wei J(2010)Research of Dielectric and Mechanical Performance of 1100 kV spacer.In:2010 Transmission Annual Meeting,Apr.2010
[3]Liu Y(2013)Research of Design ideas of spacer.Electrical Manufacturing,Vol.8,pp:48-52
[4]Chen Y,Cui B,Wu Y et al(2015)Study of improving mechanical strength for 1100 kV spacer insulator.High Voltage Apparatus,51(7):52-56
[5]Zhao W(2005)Probe on design method of basin spacer.Huatong Technology,24(3):27-30
[6]Tian H,Hao L,Liu S et al(2013)Research of high-performance epoxy casting material for GIS Insulating part.Insulating Materials,46(3):9-13
[7]Lee KY,.Lee KW,Choi YS et a(2005)Improved thermal,structural and electrical properties of epoxy for use at high voltages.IEEE Transactions on Dielectrics and Electrical Insulation,12(3):566-572
[8]Euntala J(2006)Simulation of electromagnetic shielding in COMSOL Multiphysics environment.In:Proceedings of the COMSOL Users Conference,2006
[9]Ohki Y,Yahagi K(1975)Temperature dependence of surface flashover voltage polyethylene in vacuum.Journal of Applied Physics,46(8):3695-3696
[10]Craig MH(1993)Flashover of lnsulation in Vacuum:Review of the Phenomena and Techniques to improve Hold off Voltage.IEEE Transactions on Dielectrics and Electrical Insulation,28(4):512-527
[11]Grishutin GS,Zhurtov VM,Pokrovs.AS(1984)Influence of Hydrocarbon Compounds on the Electric Strength of an Insulator.Proceeding of the 11th International Symposium on Discharge and Electric Insulation in Vacuum,pp:339-341
[12]Garniwa,I(2003)Critical flashover voltage mechanism and prediction of resin epoxy insulator on temperature changes.Properties and Applications of Dielectric Materials,2003.In:Proceedings of the 7th International Conference,Vol.1,pp:397-400