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Full-scale calibration device and calibration method for scale factor of high-voltage nanosecond pulse voltage divider

A technology of nanosecond pulses and scale factors, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, etc., can solve problems such as high-voltage segment errors and measurement result deviations, and achieve reduced specific gravity, reduced distortion, and reduced equivalent The effect of inductance

Active Publication Date: 2022-04-01
NORTHWEST INST OF NUCLEAR TECH
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AI Technical Summary

Problems solved by technology

If the linearity of the scale factor of the voltage divider cannot be calibrated within the full range, the high voltage section of the range will follow the calibration results under low voltage conditions, which may introduce errors in the high voltage section, resulting in large deviations in the measurement results

Method used

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  • Full-scale calibration device and calibration method for scale factor of high-voltage nanosecond pulse voltage divider
  • Full-scale calibration device and calibration method for scale factor of high-voltage nanosecond pulse voltage divider
  • Full-scale calibration device and calibration method for scale factor of high-voltage nanosecond pulse voltage divider

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Embodiment Construction

[0042] Such as figure 1As shown, the full-scale linearity calibration device for the scale factor of the high-voltage nanosecond pulse voltage divider provided in this embodiment includes a voltage electric field correlation unit 10 , a nanosecond pulse source 11 , a laser 13 , a photodetector 14 and an oscilloscope 15 .

[0043] Such as figure 2 As shown, the voltage and electric field correlation unit 10 includes a coaxial transmission line, a feed-in insulator 1 , an output insulator 5 , a matching resistor 4 and an electric field measurement probe 6 .

[0044] The coaxial transmission line is composed of a coaxial transmission line outer cylinder 2 and a coaxial transmission line inner core 3; the ratio of the outer diameter of the coaxial transmission line inner core 3 to the inner diameter of the coaxial transmission line outer cylinder 2 is 5.29 (the equivalent impedance of the coaxial transmission line at this time is 100 ohms); the ratio of the length of the paralle...

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Abstract

In order to reduce the measurement deviation of nanosecond pulse voltage in pulse power technology, the present invention provides a full-scale calibration device and calibration method for the scale factor of high-voltage nanosecond pulse voltage divider. The present invention utilizes the nanosecond pulse electric field measurement probe in The scale factor can be calibrated by equipment such as GTEM cell or TEM cell within a large amplitude range. By associating nanosecond pulse voltage and nanosecond pulse electric field, it skillfully avoids the non-standard nanosecond pulse voltage under high voltage level. The current status of the measurement system has realized the calibration of the scale coefficient of the nanosecond pulse voltage divider at the voltage level of hundreds of kilovolts, and solved the traceability problem of the voltage measurement of the nanosecond pulse of hundreds of kilovolts in pulse power technology.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and in particular relates to a device and a calibration method for full-scale calibration of the scale factor of a high-voltage nanosecond pulse voltage divider. Background technique [0002] The measurement of nanosecond pulsed voltage is an important aspect in pulsed power technology. Because of the fast leading edge of nanosecond pulses, the measurement device is required to have a higher upper limit cut-off frequency, and a compact resistor divider or capacitive voltage divider integrated in the pulse power system is often used as the measurement device. GBT16927.2-2013 gives the national standard for high voltage measurement in power system. Combined with the established standard measurement system, the measurement of high voltage in power system has a complete traceability system. Different from the measurement methods and devices of impulse voltage and operating overvoltage in the pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 陈志强石跃武贾伟王伟郭帆何小平吴伟
Owner NORTHWEST INST OF NUCLEAR TECH
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