Impacting test device for simulating lightning

Abstract

The invention discloses an impacting test device for simulating a lightning. The device is characterized that a wave resistor of the device is in parallel connection with an energy storage unit and islocated between a gap switch unit and a first wave modulating resistor which are in serial connection; the gap switch unit comprises a high-voltage-capacitor-side conductive disc, a high-voltage-inductance-side conductive disc and a low-voltage conductive disc; a non-gap type self-adaption Crowbar switch unit comprises a high-voltage rapid impulse semiconductor assembly and a supporting frame, and the high-voltage rapid impulse semiconductor assembly is composed of a first diode, a second diode and a connecting plate; the high-voltage-inductance-side conductive disc of the gap switch unit isconnected with one end of an inductance and the other end of a second wave modulating resistor, the low-voltage conductive disc of the gap switch unit is connected with a low-voltage end of a to-be-detected object loading platform, and the other end of the inductance is used for connecting a high-voltage output end of the high-voltage end of the to-be-detected object loading platform. The device has the advantages that a long-wave-tail waveform can be output using a smaller capacitor, an additional impacting voltage generator is not needed, the generator is prevented from being out of control,and the successful rate is almost 100%.

Description

technical field [0001] The invention relates to the technical field of surge protector testing, in particular to an impact test device for simulating lightning. 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 impact test device for simulating lightning 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, aircraft direct lightning Effect test waveform A component, D component, and a generator of long wave tail waveforms such as power supply 10 / 1000μs. [0003] At present, there are two main types of impact test devices for simulating lightning on the market, one is the CRL discharge circuit bas...

AI Technical Summary

Problems solved by technology

[0006] (1) The control of the generator is more complicated. It is necessary to control the triggering systems of two sets of generators (impulse test device for simulating lightning 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. Time control must be accurate, otherwise discharge failure is prone to occur and 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

Images