Lightning data mapping of West Java province

摘要

Historical lightning data could be use to evaluate certain transmission line in power system network. By using historical data from lightning detection system with combined Magnetic Direction Finder and Time of Arrival method, lightning data mapping for West Java province was presented in this paper. According to the lightning data mapping from total recorded event, the peak current of the lightning was mostly ranged within 10 kA to 15 kA with median peak current value up to 20 kA. Bogor and Bandung had relatively high lightning density among other area within West Java province. Evaluation of lightning exposure for 150 kV transmission line on Bogor and Bandung were presented to determine which segment of the transmission line should be set as priority during routine monitoring and maintenance. Transmission fault or reclose event analysis using recorded lightning data was presented as a recommendation for further maintenance on the tower part prior to fault or reclose event, e.g., insulation string, ground wire or tower grounding.