%0 Journal Article
%J IEEE Transactions on Power Systems
%D 2009
%T Optimal Transmission Switching With Contingency Analysis
%A Kory W. Hedman
%A Richard P. O'Neill
%A Emily Bartholome Fisher
%A Shmuel S. Oren
%K CERTS
%K power system economics
%K reliability and markets
%K RM08-001
%X In this paper, we analyze the N-1 reliable dc optimal dispatch with transmission switching. The model is a mixed integer program (MIP) with binary variables representing the state of the transmission element (line or transformer) and the model can be used for planning and/or operations. We then attempt to find solutions to this problem using the IEEE 118-bus and the RTS 96 system test cases. The IEEE 118-bus test case is analyzed at varying load levels. Using simple heuristics, we demonstrate that these networks can be operated to satisfy N-1 standards while cutting costs by incorporating transmission switching into the dispatch. In some cases, the percent savings from transmission switching was higher with an N-1 DCOPF formulation than with a DCOPF formulation.
%B IEEE Transactions on Power Systems
%V 24
%P 1577 - 1586
%8 08/2009
%N 3
%! IEEE Trans. Power Syst.
%R 10.1109/TPWRS.2009.2020530
%0 Journal Article
%J IEEE Transactions on Power Systems
%D 2008
%T Optimal Transmission Switchingâ€”Sensitivity Analysis and Extensions
%A Kory W. Hedman
%A Richard P. O'Neill
%A Emily Bartholome Fisher
%A Shmuel S. Oren
%K CERTS
%K power system economics
%K reliability and markets
%K RM08-001
%X In this paper, we continue to analyze optimal dispatch of generation and transmission topology to meet load as a mixed integer program (MIP) with binary variables representing the state of the transmission element (line or transformer). Previous research showed a 25% savings by dispatching the IEEE 118-bus test case. This paper is an extension of that work. It presents how changing the topology affects nodal prices, load payment, generation revenues, cost, and rents, congestion rents, and flowgate prices. Results indicate that changing the topology to cut costs typically results in lower load payments and higher generation rents for this network. Computational issues are also discussed.
%B IEEE Transactions on Power Systems
%V 23
%P 1469 - 1479
%8 08/2008
%N 3
%! IEEE Trans. Power Syst.
%R 10.1109/TPWRS.2008.926411