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Navegando por Autor "SANTOS, Ana Paula Paes dos"

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    Electric systems failures produced by CG lightning in Eastern Amazonia
    (Universidade Federal do Pará, 2014-12) SANTOS, Ana Paula Paes dos; SOUZA, José Ricardo Santos de; SOUZA, Everaldo Barreiros de; CARMO, Alexandre Melo Casseb do; RIBEIRO, Wanda Maria do Nascimento
    Operational records of power outages of the electric energy distribution systems in eastern Amazonia presented a large number of events attributed to lightning strikes, during the 2006 to 2009 period. The regional electricity concessionary data were compared to actual lightning observations made by SIPAM’s LDN system, over two areas where operational sub systems of transmission lines are installed. Statistical relations were drawn between the monthly lightning occurrence density and the number of power outages of the electric systems for both areas studied. The results showed that, although with some delays between these variables peaks, the number of power disruptions has a tendency to follow the behavior of the lightning occurrence densities variations. The numerical correlations were positive and may be useful to the transmission lines maintenance crews at least for the Belém-Castanhal electricity distribution sub system. Evidence was found, that the SST’s over certain areas of the Pacific and Atlantic Oceans, influence convection over the area of interest, and may help to prognosticate the periods of intense electric storms, requiring repair readiness for the regional electric systems.
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