Metas Razoáveis para a Evolução das Perdas na Rede de Distribuição

João André Correia

Key information

Authors:

João André Correia (João André Correia Carvalho)

Supervisors:

Luís António Fialho Marcelino Ferreira (Luís António Fialho Marcelino Ferreira); Pedro Manuel Santos de Carvalho (Pedro Manuel Santos de Carvalho)

Published in

12/19/2012

Abstract

In the past few years, the demand and electricity price have been constantly rising. This increases the electrical energy losses price, which are paid in the electrical bill, even tough not consumed by clients. It is the regulator's interest to know the losses and to do its utmost to minimize them. It would bring environmental, technical and economic advantages. In this work the electrical losses of the distribution network are studied, with and emphasis in medium-voltage. The main goal is to find an algorithm that allows the estimation of losses to be consistent and supported. It will allow to approximately know the losses per voltage level and ultimately where the investments should concentrate to diminish them. After loss calculation, overhead lines and cable substitutions are made in order to minimize losses. Lastly, we apply the results obtained to the loss reduction incentive sponsored by the regulator. A method of medium-voltage network loss calculation based on the choice of a representative circuit, resulting from a discretization of the length, installed capacity and annual peak current of a set of circuits is presented. We introduce the optimal utilization concept, that is a long-term minimization of the network cost used in the substitution of conductors.