农用高压电网圆柱形殷钢电容分压器边缘效应的研究

摘要

By comparing the calculated value and actual measurement value of invar on the capacitive voltage divider,the presence of edge effects caused the actual results was too large capacitive divider conclusions. The theoretical analysis was used as a starting point and combined with calculus theory and capacitors idea,and the edge effects formula of the total capacitance value was derived. According to the characteristics of the cylindrical capacitor,the approach of increasing the capacitive divider edge capacitance on the ring chamfer radius was provided to weaken the edge effect,and the test had been passed to verify the program feasibility.%通过殷钢电容分压器理论计算值与实际测量值的对比，得到边缘效应的存在导致电容分压器的实际测量值偏大的结论。以理论分析为切入点，结合微积分原理及电容串联思想，推导出计及边缘效应的分压器电容值计算公式。针对圆柱形电容器的特点，提出利用增加电容分压器边缘电容环倒角半径的方法来削弱边缘效应，并通过试验验证了该方案的可行性。