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SIAMJO
2010

Optimization Strategies for the Vulnerability Analysis of the Electric Power Grid

9 years 10 months ago
Optimization Strategies for the Vulnerability Analysis of the Electric Power Grid
Identifying small groups of lines, whose removal would cause a severe blackout, is critical for the secure operation of the electric power grid. We show how power grid vulnerability analysis can be studied as a mixed integer nonlinear programming (minlp) problem. Our analysis reveals a special structure in the formulation that can be exploited to avoid nonlinearity and approximate the original problem as a pure combinatorial problem. The key new observation behind our analysis is the correspondence between the Jacobian matrix (a representation of the feasibility boundary of the equations that describe the flow of power in the network) and the Laplacian matrix in spectral graph theory (a representation of the graph of the power grid). The reduced combinatorial problem is known as the network inhibition problem, for which we present a mixed integer linear programming formulation. Our experiments on benchmark power grids show that the reduced combinatorial model provides an accurate appr...
Ali Pinar, Juan Meza, Vaibhav Donde, Bernard C. Le
Added 30 Jan 2011
Updated 30 Jan 2011
Type Journal
Year 2010
Where SIAMJO
Authors Ali Pinar, Juan Meza, Vaibhav Donde, Bernard C. Lesieutre
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