Voltage sag and recovery influence for modeling motor loads

This report assesses the influence of voltage sag and recovery on typical motor loads so that reasonable estimations of load response can be made in system planning studies. The Load Composition Model (Kosterev) divides motor loads into four classes; this report breaks down each class into categories of motor type and provides an overview of protection response for each motor type. This report also discusses the effect of the point on wave where the voltage sag begins.