  This paper presents a novel approach to handle the computational complexity
in security-constrained unit commitment (SCUC) with corrective network
reconfiguration (CNR) to harness the flexibility in transmission networks. This
is achieved with consideration of scalability through decomposing the
SCUC/SCUC-CNR formulation and then fast screening non-critical sub-problems.
This is compared against the extensive formulations of SCUC and SCUC-CNR to
show the advantages of the proposed typical-decomposition and
accelerated-decomposition approaches to SCUC and SCUC-CNR respectively.
Simulation results on the IEEE 24-bus system show that the proposed methods are
substantially faster without the loss in solution quality. The proposed
accelerated-decomposition approaches can be implemented for large power systems
as they have great performance in the scalability tests on the IEEE 73-bus
system and the Polish system when compared against the respective extensive
formulations and typical-decomposition approaches. Overall, a dynamic
post-contingency network can substantially alleviate network congestion and
lead to a lower optimal cost.
