Digital calibration system of partial discharge test equipment

A technology of partial discharge and testing equipment, applied in the field of calibration system, can solve problems such as reducing accuracy and changing PC value, and achieve the effect of improving efficiency and improving calibration efficiency

Active Publication Date: 2010-05-12
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is possible to change the PC value due to the influence of the environment and lead wires during field use, resulting in a decrease in accuracy

Method used

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  • Digital calibration system of partial discharge test equipment
  • Digital calibration system of partial discharge test equipment
  • Digital calibration system of partial discharge test equipment

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific examples. The following examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0025] Such as figure 1 Shown is the overall structural block diagram of the present invention, and this system comprises: the digital calibrator and the measurement and control computer of the device to be tested and the partial discharge test equipment connected with the device to be tested respectively, the digital calibrator of the partial discharge test equipment The output end of the measurement and control computer is electrically connected to the measurement and control computer; the measurement and control computer compares, analyzes and calculates the collected waveform and data measurement value with the standard value output by the digital calibrator, and obtains the error between the measurement value and the standard value, and...

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Abstract

The invention discloses a digital calibration system of partial discharge test equipment. The digital calibration system is characterized in that the system comprises a device to be tested, and a digital calibrator and a measurement and control computer of the partial discharge test equipment which is connected with the device to be tested, wherein the output end of the digital calibrator of the partial discharge test equipment is connected with the measurement and control computer; the measurement and control computer compares the collected waveform and data measured value with the standard value output by the digital calibrator to perform analysis and calculation and obtain the error of the measured value and the standard value, outputs the error value, and measured value and standard value to a data outputting machine so as to realize the calibration of the partial discharge test equipment. In the system of the invention, the wide measuring range which is 1-10000pc, the high accuracy standard pulse calibrator and a high speed data acquisition card with 12 bits of precision are adopted to ensure the calibration accuracy to reach + / -2%.

Description

technical field [0001] The invention discloses a calibration system for calibrating partial discharge testing equipment and a digital calibration system for field partial discharge testing equipment. Background technique [0002] With the continuous development of power electronic systems and high-voltage electrical products, and with the upcoming revision of the IEC standard on "Partial Discharge Measurement", the measurement and calibration of the test system for partial discharge tests is proposed to be more stringent and stricter. Meticulous and new requirements, especially in the range of 1-10000PC, the realization of a digital standard system with a calibration accuracy better than ±2% or higher needs to be established urgently. [0003] The currently used calibration method is to calibrate and open the cover plate of the calibrator of the partial discharge test system to be calibrated, and measure the square wave voltage value U 0 , and then measure the capacitance v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 王小英任稳柱
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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