Optimal reconfiguration of transmission systems with transient stability constraints

This paper focuses on theoretically proposing a method based on the decomposition technique to solve the optimal reconfiguration of transmission systems (ORTS) constrained by transient stability restrictions. That is, by taking a large number of contingencies into consideration and further exploiting the characteristics of ORTS, this paper adopts the Benders decomposition to divide the ORTS into an OPF subproblem with the stability constraints and a line switching master problem. Moreover, the active set technique is used to improve the efficiency for the subproblem while the relaxation method is applied to the master problem to cope with mixed integer variables. Since the ORTS directly involves the manipulations of transmission lines, it can be expected to apply to not only operations of power systems, but also the evaluations of transactions and wheeling under competitive environment.