Overhead versus Underground: Designing Power Lines for Resilient, Cost-Effective Distribution Networks under Windstorms
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Windstorms represent a particular class of highimpact,
low-probability events that is highly likely to damage
distribution poles and pull down overhead lines in vulnerable
areas. As a result, when a windstorm occurs, the costs associated
with damaged overhead corridors and energy not supplied may
be too high. Conversely, the costs associated with the installation
of underground distribution lines are expensive in comparison
to overhead distribution lines and may not compensate for the
penalties avoided for the loads lost. In this scenario, this article
assesses the costs and risks associated with underground and
overhead power lines for a resilient, cost-effective planning and
operation of power distribution networks under windstorms.
Thus, it calculates the accumulated costs associated with installation,
operation, and repair of power distribution lines, as
well as the penalties for the energy not supplied, subject to
the probability of failure of individual components over time,
to determine which power line setting is the most appropriate in
terms of resilience and costs
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