Optimal Transmission Switching With Contingency Analysis

TitleOptimal Transmission Switching With Contingency Analysis
Publication TypeJournal Article
Year of Publication2009
AuthorsKory W Hedman, Richard P O'Neill, Emily Bartholome Fisher, Shmuel S Oren
JournalIEEE Transactions on Power Systems
Pagination1577 - 1586
Date Published08/2009
KeywordsCERTS, power system economics, reliability and markets, RM08-001

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.

Short TitleIEEE Trans. Power Syst.