Induction motor load model is the analysis and calculation basis for power system transient stability. And four induction motor load models are proposed,namely electromagnetic transient model,electromechanical transient model and voltage transient model. The dynamic power-on-demand characteristics of four kinds of induction mo-tor load models should be correctly understood. It is the key to accurately evaluate the voltage stability of the power system and model composite load characteristics. Regarding fifth -order electromagnetic transient model as the benchmark,four kinds of induction motor load models are compared and analyzed. And the aspects of calculation accuracy,application of active power and reactive power are compared. It is reference basis for selection and appli-cation of the induction motor load model in the stability calculation of power system.%感应电动机负荷模型是电力系统暂态稳定分析和计算的基础,已提出了4种感应电动机负荷模型,即电磁暂态模型、机电暂态模型、机械暂态模型以及电压暂态模型.正确认识4种感应电动机负荷模型的动态功率需求特性是进行电力系统电压稳定评估和综合负荷特性准确建模的关键.本文以五阶电磁暂态模型为基准,从动态有功和动态无功计算精度以及应用场合等角度对4种感应电动机负荷动态模型进行比较分析,为感应电动机负荷模型在电力系统稳定计算的选取和应用场合提供了参考依据.
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