Closed small gap multi-electrode gas switch device and method

Abstract

The invention relates to a closed-type small-gap multi-electrode gas switchgear. The device adopts a sealed structure and is filled with sulfur hexafluoride gas with good insulation performance, which can greatly reduce the size of the internal electrodes and the gap between the electrodes, thereby The volume of the whole device is reduced; moreover, the device can adjust the rated voltage of the switch device through the inflated air pressure, avoiding the phenomenon of manufacturing different abrasive tools for products with little change, and manufacturing multiple times; at the same time, the device adopts spherical electrodes, and through insulating pillars The internal conductive parts are connected to form a discharge gap. The electric field distribution of this arrangement is more reasonable. A uniform resistor is installed at both ends of the gap, and a trigger signal is applied to each gap through a pulse voltage generator and a coupling capacitor. There is no need to adjust the ball gap gap or internal air pressure. , easy to operate, has the characteristics of good synchronization, wide trigger range, not affected by external conditions, and multiple uses of a single model.

Description

technical field [0001] The invention relates to the technical field of high-voltage testing, in particular to a closed-type small-gap multi-electrode gas switch device and method. Background technique [0002] With the continuous development of my country's power system, the transmission range continues to expand, the voltage level and capacity of high-voltage operating equipment continue to increase, and the ability to adapt to harsh environments is also increasing, so that the voltage level of high-voltage test equipment, environmental adaptability, Higher requirements are put forward in terms of volume and weight. [0003] In the prior art, the impulse voltage generator of high-voltage test equipment is generally used in the ordinary ignition ball gap, adjust the distance between the ball gaps before triggering, and then apply a trigger pulse to the lowest ignition ball gap to trigger, and the subsequent stages are triggered by pressure drop to form pulses High voltage, u...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a closed type small-gap multi-electrode gas switch device and method, the device and method use gas with high insulating performance as the main insulating medium, reduce the insulation distance between the electrodes inside the switch device, and reduce the size of the gas switch. At the same time, the device adopts a small gap structure of multi-level electrodes, uses trigger pulse to trigger discharge, does not need to adjust the gap distance or internal air pressure, can realize stable and synchronous triggering, avoid false triggering, and solve the problem of shock voltage generator Problems such as misdischarge and poor synchronization under harsh conditions such as high altitude and high temperature and humidity

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