Vacuum region current measurement probe calibration device and calibration method for multi-parallel pulse high-current device

By designing a calibration device for a vacuum current measurement probe of a multi-channel parallel pulse high current device, and using a coaxial structure and gas switch triggering method, the problems of complexity and low signal-to-noise ratio of existing calibration methods are solved, and accurate calibration and signal interpretation of differential ring scale coefficients are achieved.

CN122109962APending Publication Date: 2026-05-29NORTHWEST INST OF NUCLEAR TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST INST OF NUCLEAR TECH
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing offline calibration methods involve complex scale coefficient conversions and do not consider the impact of installation errors; online calibration generates low pulse current amplitudes and outputs extremely low signal-to-noise ratios, making signal interpretation difficult.

Method used

Design a calibration device for a vacuum zone current measurement probe of a multi-channel parallel pulse high-current device, including a housing, an energy storage capacitor, a gas switch, a current measuring device, and a charging assembly. It is connected to the load side of a multi-layer insulated stack-disc conical magnetic insulated transmission line through a coaxial feeding fixture and a return fixture. The energy storage capacitor is discharged by triggering the gas switch. The differential loop is calibrated by a standard Rogowski coil and a short-circuit rod Rogowski coil respectively. Combined with the gas release trigger or gas extraction trigger, uniform feeding and calibration of pulse current are achieved.

Benefits of technology

It improves the effectiveness and reliability of calibration results, solves the problems of complex calibration device structure and low signal-to-noise ratio, can accurately calibrate the scale coefficient of the differential loop, and adapts to the requirements of large current feed.

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Abstract

The present application relates to a kind of multi-parallel pulse large current device vacuum area current measurement probe calibration device and calibration method, mainly for solving the scale factor conversion method complex in existing offline calibration method, or the existing online calibration generates low pulse current amplitude, output signal signal-to-noise ratio is extremely low, it is difficult to realize signal interpretation and other technical problems.The multi-parallel pulse large current device vacuum area current measurement probe calibration device of the present application, including shell and the energy storage capacitor and gas switch being set in shell, two current measurement devices for calibrating disc cone magnetic insulation transmission line and differential ring on insulating stack respectively, and charging assembly for charging energy storage capacitor, calibration device is connected in the load side of multi-layer insulating stack-disc cone magnetic insulation transmission line by feeding tool and backflow tool;Solved the technical problem of uneven or multi-point feeding structure complexity from the outside single point of disc cone magnetic insulation transmission line.
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