Motor Behavior Through Power System Disturbances

Most process plants employ automatic switching schemes to maintain operation through power system disturbances. An understanding of motor behavior through such disturbances is helpful in the application of selective fault clearing, fast bus transfer, and delayed bus transfer schemes. Results and conclusions of computer aided transient studies of major industrial plants performed over the past eight years are presented. Numerous computer printouts are plotted to illustrate the transient behavior of large synchronous and induction motors, large groups of smaller motors, and the power systems that serve them.