Title :
Characterization of Fast Flashover of External Insulation
Author_Institution :
Manitoba Hydro, Winnipeg, MB
Abstract :
During the investigation of the flashover of FRP surfaces a flashover mechanism has been identified that can occur at moderate values of relative humidity, with very low values of surface leakage current under direct voltages of negative polarity at gradients as low as 111 kVdc/m. A method has been developed to reliably generate such flashovers. The effectiveness of a preventive measure has been demonstrated.
Keywords :
flashover; humidity; insulation; leakage currents; FRP surfaces; external insulation; fast flashover; relative humidity; surface leakage current; Electrodes; Fiber reinforced plastics; Flashover; Humidity; Inhibitors; Insulation; Leakage current; Pollution measurement; Testing; Voltage;
Conference_Titel :
Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-2091-9
Electronic_ISBN :
1089-084X
DOI :
10.1109/ELINSL.2008.4570384
