The simulink of the power system can help people to analyze the actual power system's various state.As an important instrument,the Matlab software gains the recognition because of its all-sided and professional features.But when it is used in the field of dynamic process of the power system,there exist some disadvantages such as the difficulty of the modeling.The state-space module can be used to set up the three rank compact model of the generator and the electrical machine.It makes the modeling more convenient and more easily jointed to the system's primary parameter such as voltage and frequency.The typical model of the power system is built including the generator,electrical wire,load and SVC by using the function of the Simulink.In order to make the model's physical conception,some necessary predigestion is made to the typical model.At last,some conclusions about the voltage stabilization are gained by using the simulink of the system's malfunction,testifing the correctness and feasibility of this compact modeling.