Continuation Power Flow with Overload and Redispatch

This paper shows how an overload followed by generator redispatch may be incorporated in the set of power flow equations. A pair of generator is chosen in order to remove the overload according to one of three approaches: most efficient, greatest margin and redispatch. The main idea of the paper is to illustrate the interaction between various kinds of limits and their respective control actions. The methodology proposed here has some important characteristics not addressed before in the literature. The most important is the precise handling of flow limits by explicit inclusion of the limit as an additional equation. The impact of this change on the system Jacobian matrix is illustrated. The results illustrated with the help of the 118 bus-system with all limits considered.