电力系统电压稳定性的Matlab建模分析

电力系统的仿真可以帮助人们通过计算机手段分析实际电力系统的各种运行情况,Matlab软件作为一个重要的工具,凭借其功能的全面性和专业性,得到了电力工作者的认可,但是进行具体电力系统动态行为分析时,存在建模困难等实际弱点,所以提出利用Matlab软件中的状态方程模块建立了一种经过简化的发电机和电动机的三阶模型,使得电机模型建立方便,而且容易与系统主要参量即电压和频率进行接口,并且利用Simulink建立了含发电机、输电线路、电动机、静止无功补偿器的典型的电力系统,在建模过程中为了使模型物理概念明确,针对经典的模型进行了必要的简化.通过故障仿真得出了相关的电压稳定性方面的结论,从而证明了这种简化模型的正确性和在分析应用中的可行性.

Analysis of the Power System's Voltage Stabilization by Modeling and Simulink

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.