Power System Transient Analysis Using Discrete Time Modeling

Abstract

Static power system modeling methods, such as power flow and fault analyses, seek to describe steady state operating conditions of the system. However, practical systems are not always in a steady state mode. Up loading and down loading units, system failures and naturally instigated surges are all situations where steady state analysis techniques fail to accurately describe the system. In these situations transients are introduced which can range from minor ripples to significant spikes with the potential to disrupt system stability or even damage to subsystems. To investigate these occurrences, transient analysis techniques must be employed. This paper deals with the discrete-time modeling method which can be used to perform the transient analysis. The derivation of this technique as well as possible implementations are discussed.