Synchronization of multi‐machine power systems under disturbances and measurement errors
Igor B. Furtat, Artem N. Nekhoroshikh, П. А. Гущин
Abstract
Summary The problem of multi‐machine power system synchronization under parameter uncertainties, emergency modes, and measurement errors is considered. Only power angles of generators corrupted by bounded measurement errors are available for measurement. Emergency modes are associated with the sudden change of reactance of transmission lines. The proposed control law is based on measurement error filtering and left‐differences estimation of power angel derivatives. Differently from some recent control schemes, it makes the obtained control law easier to tune and less sensitive to measurement errors. The robust‐adaptive control law is suggested under unknown nominal values of reactances, EMFs, and currents. The simulations and experiments illustrate the efficiency of the proposed algorithm and confirm theoretical results in comparison with some existing ones.