WU Wei, JIANG Zhenglong, LU Jiazheng, et al. Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function[J]. High voltageapparatus, 2018, 54(1): 9-15.
WU Wei, JIANG Zhenglong, LU Jiazheng, et al. Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function[J]. High voltageapparatus, 2018, 54(1): 9-15. DOI: 10.13296/j.1001-1609.hva.2018.01.002.
Lightning and ice-coating are two natural disasters faced by transmission line
serious threat to the stableoperation of power grid. Combined arrester with insulation
the paper design a kind of 500kV lightning and icingprotection composite insulator with the method of lightning impulse and AC flashover test;in addition
the electricalfield analyzes on 500kV lightning and icing protection composite insulator is made by finite element method. Thestudy on clean and icing conditions found that the local high field strength region focus on high voltage section as wellas the junction between insulation section and lightning protection section;meanwhile
the maximum field strength is18.1kV/cm
which meet the requirements of the field operation. By means of gap lightning impulse tests
it can obtaina better lightning protection effect when an insulation segment with 1.8 meters corona ring gap is in series with arrester.