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 meth odology that eliminates the need for repeated simulation to determine a tra nsiently secure operating point is presented. The theoretical development i s straightf-forward: dynamic equations are converted to numerically equival ent algebraic equations and then integrated into the standard OFF formulati on. Implementation issues and simulation results are discussed in the conte xt of a 162-bus system.