Aggregation of Synchronous Generators and Induction Motors in Multimachine Power Systems

摘要

The aggregation theory of synchronous generators with small and large induction motor* in investigated using a hybrid multimachine representation. A no-load linearization of a two-machine system com-posed of a HynehronoiiM generator and an induction motor illustrates the dynamical interaction of electromechanical and voltage variables in both machineH. These aggregation concepts are extended to a realistic mul-timachine power KyuLotu with three .synchronous generators and three aggregate induction motor loads. Large percentages of induction ma-chine loading are uhown to be detrimental to the power system stability. The behavior of critical mud?? with increased induction motor loading is explained lining a two-machine equivalent consisting of an aggregate synchronous generator connected to an aggregate induction motor load. Tlu-'HC ithuHh arc also verified by simulating the load bus voltages fol-lowing a Htnu.ll change in the reference voltage setpoint of a synchronous generator.