Uma implementação vetorial do método da soma de potência para aplicação a redes de distribuição.

Abstract

For transmission nets of energy, the phase unbalances, in general, are small and rare. However, distribution systems are inherently unbalanced due to lines without conversion, different numbers of phases for circuits and unbalanced loads . Being like this, an evaluation more realist of the conditions of operation of a distribution system demands the use of an algorithm of power flow that considers all the phases of the net. In this dissertation a version three-phase of the method of the power sum is developed for vectorial implementation. They are taken into account the asymmetry of the loads, the phase joining and the possibility o f the net not to be completely three-phase, but to have spaces single-phase and two-phase also. The method of the power sum is a simple method, but efficiency computational very elevated in the analysis of load flow in radial feeders. With easiness the method can be extended to not very mailed feeders, as it is discussed. The implementation computational is made in Fortran 90, exploring some of the advanced resources of that language, such as the one of vectorial programming and you structure of complex data. The routine was applied the feeders of the system of distribution of Maceio.