Hybrid transient stability analysis using structure preserving model

Abstract The hybrid transient stability analysis given by Maria et al. is studied. This model differs from the usual classical model: the Eq′ machine model, the arbitrarily voltage dependent loads and the network topology are considered. The criteria for detecting the potential energy boundary surface (PEBS) based on the structure preserving model (SPM) are first proved. The method is applied to six-unit and 16-unit example systems. This is found to give a more reliable assessment of stability than the classical hybrid method for real utility.