电网技术2009，Vol.33Issue(15)：93-99,7.
基于4次线性微分方程的雷电冲击试验波形分析
Analysis of Lightning Impulse Waveforms Given by a Fourth-Order Linear Differential Equation
Nobuaki Nishimura 1Satoshi Matsumoto1
作者信息
- 1. 芝浦工业大学,日本,东京,1358548
- 折叠
摘要
Abstract
As the impulse test voltage increases, the waveform of the impulse test voltage is superposed on overshoot or oscillation. This is caused by residual inductance in the impulse test circuit and/or large stray capacitances in the test equipment. This paper describes an analysis of the equivalent circuit of the oscillating impulse test using a fourth linear differential equation. The analysis shows that the waveform is classified into three patterns: a nonoscillating impulse wave, a single-oscillating wave and a double-oscillating wave. When oscillation occurs in the wave tail, polarity reversal is observed. In the case of nonoscillation, there is a possibility of polarity reversal. The causes of the nonoscillating polarity reversal and the oscillating one are theoretically different. Naming oscillating waveform has a high frequency, but the nonoscillating waveform does not have an oscillating component. As a result, it is clarified that the cause of the latter depends on the relationship between equivalent resistance and equivalent inductance, and a root of fourth equation.关键词
雷电冲击电压试验/极性反转/振荡波/4次微分方程式Key words
lightning impulse voltage test/polarity reversal/oscillating wave/fourth-order linear differential equation分类
信息技术与安全科学引用本文复制引用
Nobuaki Nishimura,Satoshi Matsumoto..基于4次线性微分方程的雷电冲击试验波形分析[J].电网技术,2009,33(15):93-99,7.
