Alocação de Sistemas a partir da Análise dos Efeitos da Geração Distribuída em Redes de Distribuição de Energia (Methodology for placement of Dispersed Generation Systems by analyzing its Impacts in Distribution Networks)


1Universidade Federal de Santa Maria
2Universidade de São Paulo

This paper appears in: Revista IEEE América Latina

Publication Date: March 2012
Volume: 10,   Issue: 2 
ISSN: 1548-0992

Nowadays, the Brazilian electric systems need the development of new researches and tools, in order to obtain a logic solution to maintain and improve the reliability and the quality of the power delivered to customers. Therefore, the study of the appropriate connection of dispersed generation sources is an essential topic to be analyzed, since this process may provide positive impacts along the feeders. An appropriate DG site is an important aspect mentioned in the PRODIST (Proceedings of Electric Energy Distribution on Electrical National System), inside section 3. The PRODIST is established by the ANEEL - National Regulatory Agency of Electric Energy. This tool is the standard for several processes considering planning and operation of distribution power systems in Brazil. This work, therefore, follows the PRODIST stablishments. The main effects of the DG operation inside a distribution system model are analyzed through the software DigSilent®, considering power losses and voltage levels. Moreover, this study uses a multi-objective analysis defining some quantitative and qualitative parameters evaluated by specific softwares, according to several types of parameters. It is important to emphasize that the appropriate choice of these parameters is essential to support the final results, since a wrong choice or a lacking of one import parameter may provide undesirable outputs. These parameters are applied on the Bellman-Zadeh algorithm and the membership fuzzy functions in order to find the appropriate DG site inside a distribution system model. The developed methodology intends to provide positive effects in distribution networks and also work towards the power distribution planning. It is important to observe that the methodology presented in this study can be applied to distribution system feeders to find in which feeder will be the most appropriate DG location, as well to any node inside a determined feeder providing a specific place for the appropriate DG site

Index Terms:
Dispersed Generation, Multi-objective Analysis, Fuzzy Logic, Bellman-Zadeh Algorithm, Power Distribution Planning   

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