Journal
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
Volume 14, Issue 6, Pages 1401-1409Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TDEI.2007.4401222
Keywords
arc; flashover; ice; insulator; EHV and UHV; mathematical model
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A multi-arc model for applications to outdoor insulators under icing conditions is developed. In order to validate the model, several insulator types and configurations, with a dry-arc distance up to 4.17 in were tested under icing conditions. The applied water conductivity of the ice was varied between 30 and 150 mu S/cm. The simulation results from the model were found to be in good agreement with the laboratory results. This model will constitute a powerful instrument for the selection of EHV and UHV insulators subjected to ice accretion.
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