Induction motor: a new static model [articol]

Abstract

Voltage stability in power system is largely determined by the characteristics of the load. In order to obtain reliable results in voltage stability, the load model must be represented as realistically as possible. The issue is even more challenging with static voltage stability techniques, because dynamic loads must be represented by static models. The commonly used static models are constant impedance, constant current, and constant power. A significant part of the load is made up of induction motors that are usually modeled as static constant power loads. Under variations of terminal voltage of the motor, this static model can approximately represent the active power, but it can commit major mistakes when representing the behavior of reactive power. Therefore, a new motor static model will be developed in this work.