Analysis of Induction Motor Cascading Stall in a Simple System Based on the CASCADE Model

It is common for many induction motors to be connected to a load bus, and voltage can sometimes quickly collapse when an initial disturbance triggers a cascade of motors stalling. We analyze a single line power system supplying a bus with many induction motors. Variation and uncertainty in the motor load is modeled probabilistically. We describe an analytic method to estimate the parameters of a model of cascading failure from system parameters, and hence estimate the probabilities of the number of motors stalled. The analytic method gives insights into cascading stall and relates system parameters to the risk of cascading stall.