Modular device for simulating high energy thunder amplification current

Abstract

The invention discloses a modularized analog high-power thunder big-current device, which consists of communicating circuit and charging circuit, wherein the charging capacitance in the charging circuit adopts multiple paralleling high-power specific capacitors with structure to be designed at circumferential distribution; the barrel typed discharge electrode is in the center of circle with charging capacitors irradiated distributed from center to outwards; each capacitor is connected with the central electrode through resistance which is variable; when the resistance adopts low resistance value, which produces 8-20us power pulse; when the resistance is high-resistance value, it produces 10-350us power pulse. The invention can generate thunder current at 8 / 20us and 10-350us after changingthe resistance, which shortens the changing time to less than 10min with stable discharging current.

Description

technical field [0001] The invention relates to a device for simulating lightning strikes to generate 8 / 20us, 150KA and 10 / 350us, 35KA high current / high power pulse energy, which can generate pulse waveform parameters of 8 / 20us, peak maximum power up to 150KA and pulse waveform parameters of 10 / 350us, pulse lightning with peak power up to 35KA. Background technique [0002] With the continuous deepening of people's research on the phenomenon of lightning strike, there is an urgent need for a device that can simulate the phenomenon of lightning strike. At present, the most widely used and feasible method in engineering is to charge the capacitor bank through a DC high-voltage device, and then trigger the discharge through the high-voltage electrode, control the high-voltage energy discharge parameters, and obtain the standard lightning current waveform. With the in-depth development of research fields and engineering applications, the requirements for lightning pulse devices...

AI Technical Summary

Problems solved by technology

Such equipment requires a large investment and complex technology, and the lightning current generated is suitable for products such as discharge gaps, but not suitable for widely used zinc oxide products. Moreover, the principle of Crowbar discharge is affected by air temperature and humidity, and there is a problem of success rate, so it is not suitable for The application of the majority of lightning protection product manufacturers and testing institutions

[0004] The existing Crowbar discharge technology mainly has the following technical deficiencies: (1) The operation of the equipment is complicated: to generate a 10 / 350us lightning current waveform, two sets of equipment must be used for joint action at the same time, and the action synchronization time is about 10us

If the operator is a little careless or the external environment changes, it will be difficult to succeed

(2) Huge investment: the investment of such a set of equipment can cost millions, and the unit price of two sets of equipment imported from China is more than four to five million.

(3) The application of the output lightning current is limited to the air gap, but it cannot be applied to the metal oxide varistors which are more widely used in the engineering field

Images