Keywords
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Self-healing, Microgrids, Resiliency, Uncertainty,
Renewable Energies
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Abstract
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The distribution networks can convincingly break down
into small-scale self-controllable areas, namely microgrids (μG), to
substitute μGs arrangements for effectively coping with perturbations.
This flexible structure not only could potentially possess the strength
to recover quickly, but also ensures the supply of vital loads and
preserves functionalities under any contingency. To achieve these
targets, this paper examines a novel spatiotemporal algorithm to split
the existing network into a set of self-healing μGs. In this endeavor,
after designing the μGs by determining a mix of heterogeneous
generation resources and allocating remotely controlled switches, the
μGs operational scheduling is decomposed into interconnected and
islanded modes. The main intention in the grid-tied state is to
maximize the μGs profit while equilibrating load and generation at the
islanded state by sectionalizing on-fault area, executing resources
rescheduling, network reconfiguration and load shedding when the
main grid is interrupted. The proposed problem is formulated as an
exact computationally efficient mixed integer linear programming
problem relying on the column & constraint generation framework
and an adjustable interval optimization is envisaged to make the μGs
less susceptible against renewables variability. Finally, the
effectiveness of the proposed model is adequately assured by
performing a realistic case study.
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