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Keywords
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Microgrid, Monte Carlo simulation, power system
restoration, resilience, smart grids.
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Abstract
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Aframework for quantitative evaluation of the power
system resilience considering multimicrogids effects is proposed
in this article. The main contribution of the proposed approach
is that it incorporates various features underlined in the concept
of the power system resilience, such as loss of load probability,
expected demand not supplied, system fragility, system recovery
difficulties, and system adaption ability after experiencing a
destructive event. In addition to the power system aspects, the
proposed resilience framework employs the type and severity of
natural disasters to achieve realistic results. To model the impact of
multiple-microgrids, at first, the discrete-time multistate transition
model of the power system under an extreme event is obtained.
Then the probability of system states (normal, microgrid, and
emergency) is calculated using the time-independent transition
matrix and according to the time-homogeneous Markov chain.
The effectiveness of the proposed method is tested on the IEEE
30-bus test case and real electricity network of Great Britain in five
episodes each with 2000 scenarios.
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