Dynamic simulation package (DSP) is a power system analysis software developed by Electric Power Research Institute of China Southern Power Grid Co., Ltd., which is widely used in the planning and operation of China Southern Power Grid. It is found that the difference between the synchronous generator models of DSP and BPA is an important reason for the inconsistent transient stability calculation results of the two software. In this paper, the differences between the basic form synchronous generator model of DSP and the standard form synchronous generator model of BPA are analyzed and compared, the conversion relationship between the parameters of the two generator models is given, and the difference between the three-stage saturation curve used in DSP generator model and the secondary saturation curve used in BPA model is studied and the fitting method is proposed. The standard form synchronous generator model and the secondary saturation characteristics are developed in DSP, and the consistency between the model and BPA synchronous generator model is verified by examples. Compared with BPA, DSP provides both basic and standard form synchronous generator models, and both three-stage saturation and secondary saturation characteristics, which can meet a wider range of simulation model requirements.