Análise de projetos de eficientização da iluminação pública.

Abstract

Lighting is responsible for about 17% of the total eletric energy claim in Brazil. The public lighting alone is responsible for 3.5%. One of the main characteristic of this final usage is the time of consumption: the maximum claim time of the eletric system. In Brazil, it is estimated that the public lighting net cover about 12.3 million points, which means a power of 2470 MW, corresponding to an anual claim of 10,670 GWh/year. In this work, the principles of public lighting is studied, as well as the economic analysis of engineering projects. This leads to a process of assistant computing procedures. The present configuration of the system is previous analised in order to serve as a reference. From this basic case is created, by digital simulation, alternative configurations. Among these sceneries is chosen the more economic one. In the process, all the costs are included, such as, the equipments, the workers and financiers. The accomplished study, althougy developed in a general way, is applied to the electrical feeder 007 in the substation "Companhia Energetica de Alagoas - CEAL", in Pinheiro (a neighborhood of Maceio).