The Simplified Economic Evaluation of Extra-High Voltage Distribution System in the Large Apartment Complex

This paper is about the Extra-High voltage distribution system in the customer`s area. The power loss in the distribution system in the customer`s area is disregarded and rarely managed so far. But, economically, this loss is not small quality to ignore. So, in this paper, we calculate the power loss of the Extra-High voltage distribution system in the customer`s area by changing the locations of power transformer and other power facilities to decrease power loss in decreased secondary line length. And we also show the payback time of the proposed Extra-High voltage distribution system in the customer`s area by simplified calculations.