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A Framework for Robust Assessment of Power Grid Stability and Resiliency | IEEE Journals & Magazine | IEEE Xplore

A Framework for Robust Assessment of Power Grid Stability and Resiliency


Abstract:

Security assessment of large-scale, strongly nonlinear power grids containing thousands to millions of interacting components is a computationally expensive task. Targeti...Show More

Abstract:

Security assessment of large-scale, strongly nonlinear power grids containing thousands to millions of interacting components is a computationally expensive task. Targeting at reducing the computational cost, this paper introduces a framework for constructing a robust assessment toolbox that can provide mathematically rigorous certificates for the grids' stability in the presence of variations in power injections, and for the grids' ability to withstand a bunch sources of faults. By this toolbox we can “offline” screen a wide range of contingencies or power injection profiles, without reassessing the system stability on a regular basis. In particular, we formulate and solve two novel robust stability and resiliency assessment problems of power grids subject to the uncertainty in equilibrium points and uncertainty in fault-on dynamics. Furthermore, we bring in the quadratic Lyapunov functions approach to transient stability assessment, offering real-time construction of stability/resiliency certificates and real-time stability assessment. The effectiveness of the proposed techniques is numerically illustrated on a number of IEEE test cases.
Published in: IEEE Transactions on Automatic Control ( Volume: 62, Issue: 3, March 2017)
Page(s): 1165 - 1177
Date of Publication: 10 June 2016

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