Characteristics of Canay Inductance of Synchronous Machines and Its Effects on Transient Stability

Abstract

This paper presents a consideration on the characteristics of d and q axes parameters of synchronous machines. When parameters of d/q axes equivalent circuits are determined from measured data, some approximations are often used. In this paper, a consideration on the accurate determination of d/q axes equivalent circuit parameters from measured data is presented with considering Canay inductance. This paper also presents a consideration on the effect of Canay inductance on the transient stability. It is well known that Canay inductance has much effects on the transient response of field current. However its effect on the transient stability has scarcely been studied so far. In this paper, simulation studies about transient stability are performed for a model system of synchronous generator with and without considering Canay inductance, and then the effect of Canay inductance on the transient stability is clarified.