An Anomalous Transient Behaviour of a Synchronous Generator Operating onto an Infinite Bus System

摘要: Transient stability of electric power system has been studied mainly from solutions swing equations. The equations are derived the systems under some apparently reasonable assumptions. However, in course our experimental study, we met with an anomalous transient behaviour a synchronous generator operating onto infinite bus system. is constituted by generator, mimic transmission line and distribution line. Disturbance given changing reactance using circuit breaker. disturbed displacement angle does not change oscillatory, but its representative point moves as if virtual equilibrium saddle exists on phase plane. This phenomenon seem to be explained conventional equation second order, it raises question concerning applicability assumptions widely recognized established theory.