Generación Distribuida: Impacto en la Calidad de Potencia y en las Protecciones (Distributed Generation: impact on Protections and Power Quality)

Juan C. Goméz (jcgomez@ing.unrc.edu.ar)2, Jorge Vaschetti (jcgomez@ing.unrc.edu.ar)1, Carlos Coyos (jcgomez@ing.unrc.edu.ar)2, C. Ibarlucea (jcgomez@ing.unrc.edu.ar)2


1Universidad Tecnológica Nacional (UTN), Regional Córdoba
2Universidad Nacional de Rio Cuarto

This paper appears in: Revista IEEE América Latina

Publication Date: Feb. 2013
Volume: 11,   Issue: 1 
ISSN: 1548-0992


Abstract:
The present energy crisis drives to carry to an extreme the use of all the available energy sources, which need to be connected in their closest point. Traditional electric systems are changing their characteristics. Power quality is one of the aspects modified by the presence of distributed generation (DG), specially respect to harmonics, flicker, voltage sags and overvoltages. The new protection problems of the different parts of the system are explained. The contribution of generators to short circuit currents is analyzed. Philosophy changes are studied, such as: fault current bi-directionality, modification of the protection reach, failures of the overcurrent coordination, etc. It is analyzed the impact of the “islanding operation". It is concluded that DG application offers technical-economic advantages so much to the utility as to the user.

Index Terms:
Distributed Generation, Power Quality, Voltaje sags, Overcurrent Protection, Selective Coordination   


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