Optimum long-term planning of a radial primary distribution network: Part I: Data description and first proposed network form

Abstract

An algorithm for the technoeconomically optimum longterm planning of a radial primary power distribution network, dealing with the proper conductor selection for the network segments, is, proposed in this article which is completed in two parts. Load data (annual growth, load distribution), necessary economic functions and technical constraints (thermal conductor capacity, permissible voltage drop, thermal short-circuit conductor strength), which are taken into account during the planning procedure, are given in this Part L New quantities, such as the long-term economic conductor capacity and sets of allowable conductor selections for every network segment, accompanied by their possible replacement years, are also determined in this part. A network form is finally proposed as the first step of the long-term planning; procedure, which is completed in the following Part II.