Based on international test results of small-scale electrode and considering the surface roughness,the equation which can be used for estimating the critical breakdown field is deduced by using Levenberg-Marquart method.
结合国外小尺寸电极试验结果,采用麦夸特法拟合得到了考虑表面粗糙度的同轴圆柱电极SF6气体间隙下临界击穿场强估算公式。
