三相坐标系下带非平衡负载的船舶电力系统的仿真与实验

摘要

船舶电力系统中存在着大量的非平衡负载,必将引起中性点电势的漂移,在传统的dq0坐标系下很难进行研究.在三相坐标系下各元件的数学模型中引人中性点电势,然后在三相坐标系中对典型的非平衡负载情况进行了仿真研究,并进行了实验分析.仿真与实验结果的比较证明,在三相坐标系下仿真分析带非平衡负载的船舶电力系统是准确可靠的.%There are lots of unbalanced loads in the marine power systems, which will result in the shifting of the neutral-point electric potential and cause the research in the conventional dq0 coordinate system to be difficult to carry out. The paper introduces the neutral-point electric potential into mathematic models of system elements in the three-phase coordinate system, simulates the typical operation of power systems under unbalanced loads in the three-phase coordinate system, carries out experiment analysis. The validity of the proposed method that investigates marine power system operating under unbalanced loads in three-phase coordinate system is verified by comparison between the simulation results and experiment results.