基于MATLAB/SIMULINK的CVT铁磁谐振过程的仿真研究

Simulation of CVT's Ferroresonance Process Based on MATLAB/SIMULINK

利用MATLAB中的电气系统模块库POWER-SYSTEMBLOCKSET(PSB)建立了CVT的铁磁谐振过程仿真模型,仿真分析了二次侧短路以及消除该短路激励情况下的CVT铁磁谐振过程。仿真结果表明,不同的短路时刻和消除短路的时刻对CVT的铁磁谐振有不同的影响,甚至还出现了持续的振荡过程,对设备的绝缘和系统的稳定运行造成不良后果。

Using power system block-set（PSB） of MATLAB, a simulation model of the ferroresonance process of capacitor voltage transformer was built. CVT＇ s ferroresonance processes were analyzed when short circuit was occurred and eliminated in secondary side. The simulation results show that different moment of the short circuit and the elimination short circuit cause different influence to CVT＇ s ferroresonance process, even the continuous oscillation process have appeared, which will do harm to insulation and stability of the system.