Influence of Source Impedance of 8/20 μs Impulse Current Generator on the Performance Characterization of Varistor

SUN Wei; LI Yuanjing; SUN Jinru

doi:10.13296/j.1001-1609.hva.2017.11.014

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Influence of Source Impedance of 8/20 μs Impulse Current Generator on the Performance Characterization of Varistor

更新时间：2025-04-26

- Influence of Source Impedance of 8/20 μs Impulse Current Generator on the Performance Characterization of Varistor
- High VoltageApparatus Vol. 53, Issue 11, Pages: 85-91+98(2017)
- 作者机构：
  
  1. 西安建筑科技大学机电工程学院
  2. 西安交通大学电气绝缘国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.11.014
  CLC： TM54
- Published：2017
- 稿件说明：
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[1]孙伟,李元晶,孙晋茹.8/20μs冲击电流发生器源阻抗对压敏电阻器性能表征的影响研究[J].高压电器,2017,53(11):85-91+98.

SUN Wei, LI Yuanjing, SUN Jinru. Influence of Source Impedance of 8/20 μs Impulse Current Generator on the Performance Characterization of Varistor[J]. High voltageapparatus, 2017, 53(11): 85-91+98.
[1]孙伟,李元晶,孙晋茹.8/20μs冲击电流发生器源阻抗对压敏电阻器性能表征的影响研究[J].高压电器,2017,53(11):85-91+98. DOI： 10.13296/j.1001-1609.hva.2017.11.014.

SUN Wei, LI Yuanjing, SUN Jinru. Influence of Source Impedance of 8/20 μs Impulse Current Generator on the Performance Characterization of Varistor[J]. High voltageapparatus, 2017, 53(11): 85-91+98. DOI： 10.13296/j.1001-1609.hva.2017.11.014.

摘要

文中研究了不同源阻抗8/20μs冲击电流对压敏电阻冲击能量的影响规律。建立了8/20μs冲击电流发生器电路模型

进行了电路仿真研究;搭建了8/20μs冲击电流实验平台

对不同规格的压敏电阻进行冲击电流实验。研究结果表明:随着8/20μs冲击电流源阻抗减小

相同冲击电流幅值下通过压敏电阻的冲击能量增加;随着压敏电阻直流参考电压增加

冲击电流源阻抗对压敏电阻冲击能量的影响作用增强

但随着冲击电流幅值的提高

冲击电流源阻抗对通过压敏电阻冲击能量的影响作用减弱。因此

在一定冲击电流幅值以下的8/20μs冲击电流试验中

冲击电流发生回路的源阻抗不能选择的太小。研究结果对压敏电阻冲击电流测试的规范化具有一定的理论与工程应用价值。

Abstract

The effect of 8/20 μs impulse current generator with different source impedance on the impact energy of varistor was analyzed.A circuit model of 8/20 μs impulse current generator was established to conduct circuit simulation.Then

the experiment platform for 8/20 μs impulse current generator was set up to conduct impulse current test for the varistors with different specifications.The results show that the smaller the source impedance of 8/20 μs impulse current generator is

the larger the impact energy through the varistor in the same impulse current amplitude is;the higher the DC reference voltage of the varistor is

the stronger the effect of the source impedance on the impact energy is.However

with the increase of the impulse current amplitude

the effect of the source impedance on the impact energy weakens.Therefore

for the 8/20 μs impulse current test under a certain impulse current amplitude

the source impedance of the impulse current generator cannot be too small.This study may provide theoretical and engineering support for standardization of the impulse current test on varistor.

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