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Journal: International Reviem of Electrical Engineering (I.R.E.E.)
In this Paper, the lightning performance of the 150 kV transmission line in west Sumatera, Indoensia, is studied in details, showing that the lightning trip-out rate depends on the tower-footing resistance and the length of an arcing horn gap. the observed trip-out rate higher than 20 trip-outs/100km-year is in good agreement with the resulkt of the simulation by the IEEE FLASH program by using the so-callled impulse resistance. the dependency of the trip-out rate on the arm location fairly well agrees eith the rate estimated by the IEEE metrhod too.
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