The acceleration approach to practical stability domain estimation in power systems

We propose a systematic approach for estimating the Liapunov practical stability domain, along with some other fast techniques for transient stability analysis of power systems. The direct criterion thus derived is investigated and illustrated through a good number of simulations performed on several test systems and practical power networks. It is shown to be reliable, straightforward and computationally very fast. Besides being appropriate for conventional studies, the acceleration approach offers also another interesting possibility: the derivation of a transient stability index for on-line stability assessment and contingency evaluation.