| This thesis is combining with the "The accuracy of the different simplified generator model and the research of modeling based on special operating mode.", which is a sub-project of the National Technology R&D Program"Modeling Theory and Technical Study on Safety Analysis of Great Power Grid". Research purpose is to provide a theoretical basis and technical support for accurate generator model in power system simulation.The main works are summarized as follows:1.Taking 7.5kW generator model for example, setting up the dynamic disturbance experiment platform of the excitation disturbance, three-phase sudden short-circuit, BC short-circuit, C phase to neutral short circuit.2.Under the conditions of the influence of the complicated non-linear factors on generator's operation behavior adequately, such as saturation, field distortion, eddy in damping bar with dynamic process. This thesis adopts field-circuit-grid coupling time-stepping FEM method to establish dynamic simulation model of synchronous generator. Through comparable analysis, the accuracy of this dynamic simulation model is verified, and time constant Ta and Td are identified as well.3.Established infinite bus system simulation model.The critical clearing time of infinite bus system and the influence of electromagnetic torque of different short-circuit fault time on power-angle swinging have been researched.
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