Design and fabrication of scale-down model of 620 MVA, 275 kV transmission line

Abstract

In this paper a 620 MVA, 275 kV and 400 km transmission line is scaled down to 0.5 kVA, 230 V and 400 km transmission line keeping the per unit values of actual system and scale-down system same. The current carrying capacity of the scale-down system is kept 3A and can be used where single-phase supply is available. The scale-down model of the actual system is fabricated using Pi model in sections of 50 km length. The result of fabricated model is also validated using Simulink simulation. The developed model can be used to determine the ABCD parameter of transmission line which is same for actual system and scale-down model. In future any kind of laboratory model of FACTS devices can be connected to the developed model for practical purposes and study the dynamic performance of transmission line.