High fidelity simulation of power system dynamics

Detailed assessment of phenomena occurring in a power system remains a major challenge for most utilities. Complex simulations often involve fast and slow phenomena, both of which must be taken into account to obtain a faithful representation of reality. Methods that consist of splitting these phenomena into different classes (transient, mid-, or long-term stability), each corresponding to specialized software and a particular model, are no longer satisfactory. To meet this challenge, EUROSTAG software was developed for the simulation of power system dynamics. It covers the full range of phenomena, from transient to long-term stability, using a single power system model, and its application field is extensive: from the electromechanical oscillations up to the daily load evolution; from the line tripping to the centralized frequency or voltage control; from the generalized blackout to the system restoration procedure; and from tuning the generating unit controller to studying power electronics such as FACTS or HVDC. Thanks to an automatically variable step-size strategy, this single integrated program with single and extended modeling simulates the whole set of phenomena with a high degree of accuracy. Great attention has been paid to user-friendliness. Users are able to design their own process models and build new scenarios interactively, conveniently, and rapidly