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Keywords
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Network planning, Resilience, Distribution network, Disaster, Geospatial map, Fragility.
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Abstract
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Vulnerability mitigation and redundancy improvement are of the solutions for creating resilient distribution networks
that aim to prevent the uncontrollable outage propagation. In this paper, a comparative study is proposed for optimal
feeder routing problem and HV substation placement considering cost and resilience. In the first case, the network is
planned based on cost minimization, and then the proposed resilience index is calculated for the planned network. While
in the second case, the network is designed based on resilience enhancement, and afterward, the planned network cost
is calculated. In the case of resilient-based planning, the studied area is divided into small sites with different wind speed
to evaluate the geospatial characteristics of a hurricane. A fragility index is calculated for each distribution network
component located at each site. Furthermore, in this paper, the effect of HV substation number as redundancy
improvement is considered in cost and resilient based planning performance. Results show that with increasing of the
HV substation number, the cost of feeder routing is less increased. While it has more effect on the improvement of the
resilient performance index. The obtained results validate the feasibility and efficiency of the proposed method.
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