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

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

doi:10.1063/1.4897477

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

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

Authors

Ya-Feng Ge¹, Lee Li¹, Yun-Long Liu¹, Mingjia Li², Qiang Kang²

Affiliations

¹ 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.
² Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China.

PMID: 25362455
DOI: 10.1063/1.4897477

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.