Impulse current grounding device and method

Abstract

The invention relates to pulse power device grounding, in particular to an impulse current grounding device and method, and solves the technical problems of measurement interference, equipment abnormity or insulation breakdown caused by the fact that an existing grounding device and method cannot meet the grounding requirements of hundreds of ns and several kA impulse currents generated on a shell at the moment that a pulse power device works. The impulse current grounding device comprises a buried grounding body, a leading-down plate, a grounding grid arranged below the leading-down plate and a plurality of grounding electrodes arranged below the grounding grid. The leading-down plate is used for leading impact current at a specific front edge into the radiation net; the grounding grid comprises a radiation grid, a horizontal grounding grid arranged around the radiation grid and a plurality of grounding electrodes; the radiation net comprises m radiation leads which are radially distributed, m is greater than or equal to 4, and the grounding electrode is arranged below the horizontal grounding net; grounding inductance and impact grounding resistance of the pulse power device are reduced, impact voltage of a grounding point is reduced, interference is reduced, and the pulse power device is protected.

Description

technical field [0001] The invention relates to the grounding of pulse power devices, in particular to a surge current grounding device and method. Background technique [0002] With the rapid development of pulse power technology in recent years, pulse power devices show the characteristics of high power, large devices, and multiple parallel operation, and the output voltage and current of the devices are gradually increased. For example, the "Shenlong No. "The highest voltage can reach 20MV, the current of "Julong No. 1" used for Z-pinch research can reach 10MA, and the electric power level can reach 10TW (Cong Peitian, Brief introduction to the progress of pulse power technology in China[J]. Strong laser and particle beam, 2020, 32(2): 025002-1-11). When this type of large-scale pulse power device is running, due to factors such as stray capacitance and switch discharge, instantaneous high voltage will be induced on the device, causing damage to the power supply system, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems that the existing grounding device and method cannot meet the grounding requirements of hundreds of ns and several kA impulse currents generated on the shell of the pulse power device at the moment of operation, resulting in measurement interference, equipment abnormality or insulation breakdown, and provides An impulse current grounding device and method, which can reduce the grounding inductance, impact grounding resistance and grounding point impulse voltage of a pulse power device, thereby reducing interference, protecting the pulse power device and various electrical systems, and improving the operating voltage level of the pulse power device , to ensure the stable operation of the pulse power device

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