电阻分压器电场计算及其结构参数的确定

Electric Field Calculation and Structural Parameter Determin ation of Resistance Divider

研究一种电磁式电压互感器的替代装置———电阻分压器 ,并对其电场进行分析计算以确定其结构参数 .本文中利用简单谐变场的有限元方法 ,计算了几种方案的电阻分压器电场 ,得到了场中各点复数形式的电位分布 .通过比较其幅值误差、相角误差和最大场强值 ,优化出最佳方案 ,并分析了该方案幅值误差的频率特性 .

The electric fields of several resistance divider s —the substitute devices of electromagnetic voltage inductor (PT) —were ana lyzed and calculated to determine the structural parameters of the divider. In t he calculation of the electric field, the Finite Element Method of simple synton ization field (sin field) was used, and the voltage distribution of each point i n the field in the form of complex number was obtained. By comparing the amplitu de errors, phase-angle errors and the maximum electric field strength of the po ints, the best scheme for resistance divider design was optimized and the corres ponding amplitude error-frequency characteristic was analyzed. Finally the corr ectness of divider design and field calculation was validated using electric cir cuit.