Lightning damped oscillation wave generator

A damping oscillating wave and generator technology, applied in the field of lightning damping oscillating wave generators, can solve the problems of small simulated lightning voltage wave testing, and achieve the effects of distributed stray, stable inductance parameters, and small capacitance

Inactive Publication Date: 2015-02-04
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are 8 / 20μs, 10 / 350μs, (1.2 / 50μs, 8 / 20μs) combination waves and other waveforms commonly used to simulate lightning waveforms, but the test of 0.5μs / 100kHz simulated lightning voltage wave is relatively small

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the technical solution of the present invention is described in further detail:

[0027] The present invention designs a lightning damping oscillatory wave generator, such as figure 1 As shown, it includes a continuously adjustable DC high voltage forming module, a lightning damping oscillating wave forming module, and a control circuit. The lightning damping oscillating wave forming module is connected to the continuously adjustable DC high voltage forming module. The high voltage forming module and the lightning damping oscillating wave forming module are connected, wherein:

[0028] The continuously adjustable DC high voltage forming module includes a connected output voltage control circuit and a high voltage forming circuit for outputting a continuously adjustable DC high voltage signal;

[0029] The lightning damping oscillating wave forming module includes a sequentially connected energy stor...

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Abstract

The invention discloses a lightning damped oscillation wave generator which comprises a continuous adjustable DC high-voltage forming module, a lightning damped oscillation wave forming module and a control circuit. The continuous adjustable DC high-voltage forming module comprises an output voltage control circuit and a high voltage forming circuit which is connected to the output voltage control circuit. The lightning damped oscillation wave forming module comprises an energy storage capacitor, a high voltage vacuum switch and a damped oscillation wave forming circuit which are connected in order. Under the control of the output voltage control circuit, the high voltage forming circuit outputs direct current high voltage to charge the energy storage capacitor. After the charging of the energy storage capacitor is completed, the control circuit outputs a control signal, the high voltage vacuum switch is switched on, and the charging of the energy storage capacitor is stopped. The energy storage capacitor starts discharging through the damped oscillation wave forming circuit, and lightning damped oscillation wave is formed on a load resistor. The lightning damped oscillation wave generator can be connected to a digital memory, and the waveforms of voltage and current of a protection device in the effect of the damped oscillation wave.

Description

technical field [0001] The invention relates to a lightning damping oscillatory wave generator, which belongs to the field of lightning science and technology. Background technique [0002] Lightning is a common natural phenomenon. The transient amplitude of lightning current changes greatly, and strong electromagnetic pulses will be generated in space. Due to the principle of electromagnetic induction, transient overvoltages are induced in some lines, forming overcurrents along the Cable transmission, causing damage to some electrical equipment in the line. The actual measurement statistics show that the transient overvoltage caused by lightning on the low-voltage AC line has a decaying oscillation waveform, and the wave head time of the first wave is very short, the wave head time of the first wave is 0.5μs, and its main frequency of oscillation is At 100kHz, the amplitude in half a cycle is attenuated by a factor of about 0.6. [0003] At present, 8 / 20μs, 10 / 350μs, (1.2...

Claims

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Application Information

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IPC IPC(8): G01R1/28
Inventor 李祥超周中山陈则煌陈璞阳
Owner NANJING UNIV OF INFORMATION SCI & TECH
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