This paper presents a cost-effective insulation coordination design for the 115-kV transmission line of EDL (Electricite Du Laos) in Lao PDR (Laos People's Democratic Republic). The design's main objective is to find an insulation coordination model with the minimum total cost. In this paper, PSCAD/EMTDC software has been applied to realize the technical objective, and the total costs of the diffe...Show More