Long duration current rush generation system

Abstract

The invention discloses a long duration current rush generating system, comprising a charging unit, an energy storage unit, a gap switching unit, at least one first modulating resistor, a second modulating resistor, an inductor, a seamless self-adaptive Crowbar switching unit and a stage for specimen to be detected. The high-voltage inductor-side conductive pad of the gap switch unit is connectedto one end of the inductor and to the other end of the second modulating resistor, and the low-voltage conductive pad of the gap switch unit is connected to the low-voltage end of the stage for specimen to be detected, and the other end of the inductor serves as a high-voltage output end for connecting the high-voltage end of the stage for specimen to be detected; a positioning mechanism is further disposed at one end of the reversing shaft, and a corresponding positioning hole is formed in the reversing shaft. The output waveform of the invention is smooth, its peak value having no oscillation, and no peak oscillation is formed, with the waveform being relatively smooth.

Description

technical field [0001] The invention relates to the technical field of surge protector testing, in particular to a long-duration surge current generation system. Background technique [0002] Lightning is a natural discharge phenomenon in nature. After lightning occurs, through the action of electrostatic induction and electromagnetic induction, lightning overvoltage will be formed in the communication line. The long-coda impulse current generating device is mainly used in the generator of simulating lightning current to generate a pulse current waveform with large current and long duration, mainly used to simulate the current waveform of Class I lightning (direct lightning) 10 / 350μs, and the direct lightning effect of aircraft Generator for test waveform A component, D component, and power supply 10 / 1000μs long wave tail waveform. [0003] At present, there are two main types of long-tail shock current generators on the market, one is the CRL discharge circuit based on tr...

AI Technical Summary

Problems solved by technology

[0006] (1) The control of the generator is more complicated, and it is necessary to control the trigger system of two sets of generators (the long-tail wave impulse current generator and the impulse voltage generator) at the same time, so that the impulse voltage generator can delay the impulse current for a certain period of time. The control must be accurate, otherwise it is prone to discharge failure and the control is difficult;

[0007] (2) For multiple ball distance control, the whole system needs to control the three-ball motion of G2 and the coupling ball gap of G3, as well as the trigger ball gap of the impulse voltage generator body, in addition to this set of triggers, which is difficult to coordinate;

[0008] (3) It is difficult to debug the waveform. The length of the wave tail is controlled by the size of the crowbar energy storage inductor L1, but the load impedance of different tested products is different, resulting in large fluctuations in the duration of the wave tail

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