Stability-constrained optimal power flow

Stability is an important constraint in power system operation. Often trial and error heuristics are used that can be costly and imprecise. A new methodology that eliminates the need for repeated simulation to determine a transiently secure operating point is presented. The theoretical development is straightf-forward: dynamic equations are converted to numerically equivalent algebraic equations and then integrated into the standard OFF formulation. Implementation issues and simulation results are discussed in the context of a 162-bus system.