Time-domain simulation for transient stability analysis

It has been widely recognized that time-domain simulation is the most accurate method to describe power system transient behaviour since it can represent `as they are' controls, non-linearities, saturation, strong dissipative effects and the `silent sentinels', i.e., the protection system. To counterbalance this interesting feature of the approach, there is the formidable computational burden associated to the simulation of real systems when real-time framework is required for dynamic security assessment, control, etc. However, the structure of the problem presents some interesting characteristics which allowed the use of parallel/distributed computing. This chapter synthesizes the results obtained by the authors in this field.