用于脉冲功率装置测量的混合式高压分压器

Hybrid voltage divider used for high voltage pulsed power measurement

为准确测量脉冲放电电压,提出了固液混合式高压分压器的原理与结构,并进行了标定和实验测试。用简化模型分析了分压器系统的理想响应条件,讨论了两级分压的衰减特性,提出了控制误差的方法。通过负载标定,得到分压器脉冲电压频率响应大于2.9MHz,最长脉冲宽度40μs,分压比(或衰减系数)为2.60kV/V,测量误差小于5%。该高压分压器具有造价低、制作易,同时适于ns到μs级脉冲电压的测量等优点,可以在实验室中得到应用。

The principle and structure of a hybrid voltage divider are proposed and the calibration and experimental testing are carried out.The ideal response conditions of the divider are analyzed by using the simplified divider model,the attenuation characteristic of two-stage voltage dividing is discussed,and then an error control method is presented.Through load calibration,the pulsed voltage frequency response of the divider can be greater than 2.9 MHz with the largest pulse width of 40 μs,the attenuation ratio（or the attenuation coefficient） of 2.60 kV/V and the measurement error of less than 5%.The divider has the merits of low cost,easy fabrication,and being capable of ns-to μs-level pulsed voltage measurement,and it can be applied to laboratory-scale pulsed power measurement.