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Site and System Indices for Power-Quality Characterization of Distribution Networks With Distributed Generation

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5 Author(s)
Antonio Bracale ; Dep. of Technology, University of Napoli Parthenope, Napoli ; Pierluigi Caramia ; Guido Carpinelli ; Angela Russo
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The problem of developing a definition that adequately assesses power-quality (PQ) levels in the presence of distributed generation (DG) is addressed by using proper probabilistic indices for distribution networks. In the planning of new DG installations, these indices take the variation of PQ level into account and use weighting functions properly. They are useful in quantifying the impact of the installation of DG units because they can consider several PQ disturbances simultaneously. Also, they indicate how each PQ disturbance may affect the decision concerning the installation of DG units. Several tests on real distribution networks were performed and discussed in order to show the usefulness of these indices in evidencing the impact of DG on PQ levels. The analysis of the electrical distribution systems on the basis of the considered indices is valuable also to help decide the best allocation and size of distributed generators.

Published in:

IEEE Transactions on Power Delivery  (Volume:26 ,  Issue: 3 )