de Nigris, Michele

Director, Sustainable Development & Energy Sources, RSE, Italy

de Nigris, Michele

Director, Sustainable Development & Energy Sources, RSE, Italy

Biography

Impact of Insulator Pollution on Resilience of Power Networks: Experience in Italy

Mr. de Nigris is Director of the Sustainable Development and Energy Sources Department of RSE – Research on the Energy System. An Electrical engineer, he actively worked in the transmission and distribution technologies sector at CESI and subsequently in RSE, before addressing main challenges related to the interaction of the energy systems with the environment. Active in the international context, he leads the European SetPlan Implementation Group on resilient energy networks and represents Italy in coordination committees of the International Energy Agency. He is actively involved in standardization as chair of the Committee “integrated energy systems” of the Italian Electrotechnical Commission.

Pollution is a major threat to reliability of power systems and in Italy, for example, accounts for a high proportion of annual Energy Not Supplied. Related risk should ideally be considered in terms of power system resilience, the ability to limit extent, severity and duration of system degradation following extreme events. This presentation discusses models to evaluate deposition of pollutants on insulator surfaces as well as to assess the return periods of outages due to pollution under wet conditions. This allows quantifying benefits associated with various countermeasures in terms of mean failure probability and outage return periods so as to help prioritize grid interventions.

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