气隙局部放电模型的Simulink仿真研究

Simulink simulation of partial discharge of air gap

电气设备经常会由于多种原因而存在气隙缺陷,气隙缺陷会导致电气设备局部放电的发生,不利于电气设备的正常运行.本文对含有气隙缺陷的试样进行局部放电研究,通过Simulink实现仿真过程,并观察设备存在气隙时,发生局部放电的物理过程和变化规律.应用工程计算的方法,确定Simulink仿真中的关键参数,从而使模拟仿真更接近于绝缘试品中气隙缺陷的实际放电过程,为了解局部放电的发生机理提供更加准确、直观的依据.

Air gap defects exit in the electrical equipment due to a variety of reasons, which can lead to partial discharge, further affecting the normal operation of the equipment. The partial discharge of air gap defects is studied. The simulation process was realized by Simulink, and the physical process and the law of change of partial discharge were observed in presence of air gap in the equipment insulation. The approximate algorithm was applied to calculate the key parameters, which made the simulation closer to the real situation in insulation test. And it can provide a more accurate and intuitive basis for understanding the mechanism of partial discharge.