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Indirect-lightning performance of overhead distribution networks with complex topology

The paper deals with the evaluation of the indirect-lightning performance of overhead distribution networks. The novelty of this contribution is that it takes into account the inherent complexity of distribution networks. These networks are indeed characterized by a plurality of lines (main feeder and laterals) and also by the presence of typical power components (e.g., transformers and surge arresters); they consequently differ considerably from the straight line configuration generally adopted in this type of studies. To accomplish such an evaluation we have extended the general procedure already presented in a previous paper based on the use of the LIOV code along with the Monte Carlo method. The extended procedure combines the advantage of the LIOV-EMTP computer code-that allows the calculation of lightning-induced voltages in complex distribution networks-with a heuristic technique specifically developed and integrated in the Monte Carlo routine in order to reduce the computational effort. The application of the proposed procedure to a set of distribution overhead networks characterized by different topologies, but all of the same length, shows that, in general, the usual single straight-line approach may result into a misestimation of the indirect-lightning performance. The paper also analyzes and discusses the influence of both the line terminations, and the position of the line poles. © 2009 IEEE.

    Keywords: Distribution systems ; Lightning performance ; Lightning-induced overvoltages ; LIOV-EMTP ; Overhead power lines ; Power quality ; Complex topology ; Computational effort ; Computer codes ; Distribution network ; Heuristic techniques ; Inherent complexity ; Lightning induced voltage ; Line poles ; Line termination ; MONTE CARLO ; Power components ; Straight-line configuration ; Surge arresters ; Computer networks ; Distributed parameter networks ; Electric lines ; Electric measuring instruments ; Electric surges ; Heuristic methods ; Monte Carlo methods ; Power transformers ; Surge protection ; Telecommunication lines ; Topology ; Lightning

    Note:

    Department of Electrical Engineering, University of Bologna, Bologna, Italy

    Cited By (since 1996): 2

    Export Date: 25 April 2012

    Source: Scopus

    CODEN: ITPDE

    doi: 10.1109/TPWRD.2009.2021038

    Language of Original Document: English

    Correspondence Address: Borghetti, A.; Department of Electrical Engineering, University of Bologna, Bologna, Italy; email: alberto.borghetti@unibo.it

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    Record created on 2012-05-01, modified on 2016-08-09

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