Experimental device for testing insulation recovery characteristic of gas switch

Abstract

The invention discloses a gas switch insulation recovery characteristic test experimental device, which is characterized in that an energy storage capacitor, an isolation resistor and an isolation magnetic core coil are connected in series at one end of a two-electrode gas gap, and the other electrode of the two-electrode gas gap is grounded to form a discharge follow current loop. And the signal generator and the low-voltage pulse generation circuit are used for controlling the time sequence of outputting the double nanosecond pulses. The two pulse output ends are connected to the high-voltage end of the gas gap of the two electrodes through the gap of the two isolation balls. The first nanosecond pulse enables the gas gap to be broken down, the breakdown voltage is Ub1, and electric energy in the energy storage capacitor is released through a follow current loop; the time interval of the second nanosecond pulse acting on the gas gap can be adjusted through the signal generator, the breakdown voltage of the second nanosecond pulse acting on the gas gap is Ub2, and Ub2 / Ub1 reflects the recovery degree of insulation after breakdown of the gas gap in the presence of follow current. And the gas gap insulation recovery condition under different follow current working conditions can be explored by changing the charging voltage of the isolation resistor and the energy storage capacitor.

Description

technical field [0001] The invention belongs to the technical field of insulation recovery after gas gap discharge breakdown, in particular to an experimental device for testing insulation recovery characteristics of a gas switch. Background technique [0002] Switch is one of the most important components in FLTD. Gas spark switch has been widely used because of its large working range and triggering under nanosecond jitter. Among them, three-electrode field distortion switch and multi-gap multi-channel switch are the most commonly used. In practical applications of FLTD, the modules are usually connected in multi-stage series and parallel to obtain different output parameters, and its circuit topology determines the huge number of gas switches. [0003] When charging the storage capacitor in the FLTD, some gas switches unexpectedly self-break down prematurely. When a switch self-breaks down, it will discharge through the charging isolation resistor and the energy storage ...

AI Technical Summary

Problems solved by technology

However, these studies are all aimed at the insulation recovery of the gas switch after being broken down without the influence of other external circuits.

For the gas switch in FLTD, there are a large number of series and parallel connections of capacitors, resistors, and gas switches, and it is difficult to directly measure the insulation recovery characteristics of the gas switch after self-breakdown in FLTD

For the time being, there is no research platform and method for the insulation recovery of the gas switch in FLTD after self-breakdown discharge

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