Abstract
A statistical analytical method has been developed for the insulation design of transmission lines. A computer program is described which computes flashover frequency based on a consideration of the statistics of insulation performance. The METIFOR digital weather model is incorporated as basic input to the program. Multisurface towers are considered, and optimum and minimum design dimensions are determined. The relative importance of design factors and insulation duties based on the results of METIFOR line design studies is discussed. Extension of the METIFOR weather model to include variables influencing contaminated perfornance is also described.
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