Evaluation of Numerical Methods for TSCOPF in a Large Interconnected System

Transient stability-constrained optimal power flow (TSCOPF) models comprehensively analyze the security and economic operation of systems. However, they require a high computational effort can suffer from convergence problems when applied to large This study analyzes performance eleven numerical integration algorithms ordinary differential equations that represent system dynamics in TSCOPF model. The analyzed cover range explicit implicit methods, including recently published semi-explicit semi-implicit Adams-Bashforth-Moulton formulas, together with several initialization techniques. methods are model Iberian Peninsula system, their is discussed terms convergence, accuracy, effort. results show most converge solution, even for time steps. In particular, Adams-Moulton method order two Simpson’s rule, both initialized RK4, outperform trapezoidal which default models.