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Infrastructure Resilience Conference 2018

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Transportable Energy Storage Systems for Resilient Distribution Systems with Multiple Microgrids

Electricity is at the center of key infrastructure systems that support other sectors, including transportation, oil and gas production, water, communications and information, and finance. Physical incidents, cyber incidents, or natural disasters would affect the power grid and evoke catastrophes for the life. Therefore, A resilient electric power system is indispensable to meeting the demands in terms of health, safety, and national security. A resilience-oriented reconfiguration method is proposed to restore electricity to disrupted customers in distribution system expeditiously after major blackouts. Many evolutions are happening in power systems including distribution automation, microgrids, generation from renewable energy. These evolutions lead to novel and effective distribution system restoration strategies. In the disastrous events when multiple faults occurred, distributed generators can transform a distribution network into several microgrids by controlling the open/close conditions of remote-controlled switches to restore electricity service to critical loads, thus result in enhancement of distribution system resilience against catastrophe risks. In this paper, a structural model with virtual node and branches is provided to portray the topological constraint. The limits to energy within each microgrid are taken into considerations as well to account for the scarcity of generation resources. The optimization problems are formulated as mixed-integer second-order cone programming (MISOCP), which utilizes a convex relaxation of the distribution network model on the basis of branch flow model. A Case study is implemented on a modified 33-bus test system to illustrate the effectiveness of the proposed method.

Shuhan Yao
Nanyang Technological University
Singapore

Tianyang Zhao
Nanyang Technological University
Singapore

Peng Wang
Nanyang Technological University
Singapore

Huajun Zhang
Nanyang Technological Universigy
Singapore

 

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