Stability-constrained optimal power flow

TLDR

Stability is a critical constraint in power system operation, yet current trial‑and‑error heuristics are costly and imprecise. The authors present a new methodology that eliminates the need for repeated simulation to identify a transiently secure operating point. The method converts dynamic equations into numerically equivalent algebraic equations and incorporates them into the standard OPF formulation. Implementation issues and simulation results on a 162‑bus system are discussed.

Abstract

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 straight-forward: dynamic equations are converted to numerically equivalent algebraic equations and then integrated into the standard OPF formulation. Implementation issues and simulation results are discussed in the context of a 162-bus system.