Mitigating cascading failures in interdependent power grids and communication networks
Author(s)Parandehgheibi, Marzieh; Hay, David; Modiano, Eytan H.
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We study the interdependency between the power grid and the communication network used to control the grid. A communication node depends on the power grid in order to receive power for operation, and a power node depends on the communication network in order to receive control signals. We demonstrate that these dependencies can lead to cascading failures, and it is essential to consider the power flow equations for studying the behavior of such interdependent networks. We propose a two-phase control policy to mitigate the cascade of failures. In the first phase, our control policy finds the unavoidable failures that occur due to physical disconnection. In the second phase, our algorithm redistributes the power so that all the connected communication nodes have enough power for operation and no power lines overload. We perform a sensitivity analysis to evaluate the performance of our control policy, and show that our control policy achieves close to optimal yield for many scenarios. This analysis can help design robust interdependent grids and associated control policies.
DepartmentMassachusetts Institute of Technology. Department of Aeronautics and Astronautics; Massachusetts Institute of Technology. Laboratory for Information and Decision Systems
Proceedings of the 2014 IEEE International Conference on Smart Grid Communications (SmartGridComm)
Institute of Electrical and Electronics Engineers (IEEE)
Parandehgheibi, Marzieh, Eytan Modiano, and David Hay. “Mitigating Cascading Failures in Interdependent Power Grids and Communication Networks.” 2014 IEEE International Conference on Smart Grid Communications (SmartGridComm) (November 2014).