【摘要】 针对大型船舶电力系统的特点及其日益突出的暂态稳定性问题,开展了适用于船舶电力系统的方法研究。结合船舶电网拓扑结构自身特点,建立了适用于大扰动下暂态稳定分析的船舶柴油发电机组的动态等值模型、推进电机及其螺旋桨四象限工作特性等值模型。以船舶电网轴线为界,将系统等效成两机模型进行时域仿真分析,在此基础上建立系统能量函数,提出了一种适用于船舶电力系统的暂态稳定性混合分析法。该方法即可定量描述系统暂态稳定性及其稳定裕度,又可直观地在线监测系统各状态变量的动态过程。最后通过仿真算例验证了新方法的正确性和有效性。更多还原

【Abstract】 According to the characteristics of large ship power system and its increasingly prominent transient stability problems, the study on the method which applicable to ship power system is conducted. Combined with the characteristics of ship power grid topology, it is established the dynamic equivalence model of the marine diesel generator sets, propulsion motor and the four-quadrant operating characteristics of propellers. Taking the ship power grid axis as the boundary line, the system is equivalent to a two machine model in order to make time domain simulation analysis. The system energy function is established based on the simulation. Then hybrid analysis method for transient stability of ship power system is proposed. The method can quantitatively describe the transient stability and stability margin. It can also visually monitor the dynamic process of each state variable online. Finally, through a numerical example, the correctness and effectiveness of the new method is verified.更多还原