Emerging techniques for power system dynamics stabilisation

A major concern for power engineers is to keep power systems under control at all times. Particularly, in recent years, power systems are being pushed much closer to their limits for various reasons. In this respect, a number of power system dynamics stabilisation techniques have been employed by utilities. However, there are still some difficulties/problems in designing more effective control strategies. In the author´s opinion, the following are the three major characteristics of power systems which provide challenges: uncertainties; large-scale and distributed nature; and nonlinearity. The paper attempts to summarise some of the emerging techniques which have been developed to address these issues