Abstract

The object of this paper is to study the possibility of using of SVC and STATCOM in order to improve dynamic performance of induction generator. Also, these two devices have been compared with each other. Induction generators have many advantages in small wind-hydro power plants. On the other hand arising some problems including controlling of voltage and frequency oscillation due to dynamic oscillation of load and also power quality related problems causes us to study these generators widely. In most studies, the performance of generator has been estimated just in continuous mode and by each one the method of designing only one FACTS device has been described. Although in most studies design details and definition of various parameters of these devices have been considered but the behavior of generator with each of these devices, however, and their advantages to each other in different conditions has not been investigated yet. In this paper among comparing the above mentioned devices and clarifying their advantages to each other we show that employing both tools has significant impact on the quality of the produced energy from generators especially self excited ones and this approach would be useful for improving their loading characteristics.

Key words: Dynamic behavior, induction generator, FACTS.