用于数百千伏纳秒脉冲测量的溶液电阻分压器的设计、制作与测试。

Design, construction, and testing of solution resistive divider applied in hundreds of kilovolts nanosecond pulse measurement.

作者信息

Ge Ya-Feng, Li Lee, Liu Yun-Long, Li Mingjia, Kang Qiang

机构信息

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electric and Electronic Engineering, HuaZhong University of Science and Technology (HUST), Wuhan 430074, China.

Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China.

出版信息

Rev Sci Instrum. 2014 Oct;85(10):105106. doi: 10.1063/1.4897477.

DOI:10.1063/1.4897477

PMID:25362455

Abstract

The solution resistive divider is often used considering its excellent high-frequency and withstanding voltage characteristics. This paper develops a nanosecond pulse measurement system based on the CuSO4 solution resistive divider, which can be used to measure high voltage impulses with rise time of 50 ns and amplitude of 300 kV. The low-voltage arm of the newly designed solution resistive divider is composed of noninductive metal film resistors. The newly designed resistive divider combines the advantages of the conventional solution resistive divider and metal film resistive divider. The stray parameters of the resistive divider are theoretically calculated and the circuit simulation is studied. Besides, the square wave response characteristics of the resistive divider are studied in the experiments. Considering the effect of frequency on the surge impedance of the cable, a matching cable of the same type with the transmission cable instead of a common matching resistor is used to improve the matching effects. In order to reduce the effects of electromagnetic interference on the measurement results, some shielding measures are taken. The experimental results show that the measurement system has good response characteristics in the practical application.

摘要

溶液电阻分压器因其优异的高频和耐压特性而经常被使用。本文基于硫酸铜溶液电阻分压器开发了一种纳秒脉冲测量系统，该系统可用于测量上升时间为50 ns、幅值为300 kV的高压脉冲。新设计的溶液电阻分压器的低压臂由无感金属膜电阻组成。新设计的电阻分压器结合了传统溶液电阻分压器和金属膜电阻分压器的优点。对电阻分压器的杂散参数进行了理论计算，并研究了电路仿真。此外，在实验中研究了电阻分压器的方波响应特性。考虑到频率对电缆波阻抗的影响，采用与传输电缆相同类型的匹配电缆代替普通匹配电阻以提高匹配效果。为了减少电磁干扰对测量结果的影响，采取了一些屏蔽措施。实验结果表明，该测量系统在实际应用中具有良好的响应特性。