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Automatic calibration apparatus for electric power instrument

A technology of automatic calibration and power meter, applied in measuring devices, instruments, measuring electrical variables, etc., can solve problems such as poor accuracy, and achieve the effect of wide application, improved calibration efficiency, and small limitations

Inactive Publication Date: 2018-03-20
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention proposes an automatic calibration device for power meters, which aims to solve the problem of poor accuracy caused by manual visual recognition of recorded data in existing voltage divider calibration methods

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  • Automatic calibration apparatus for electric power instrument
  • Automatic calibration apparatus for electric power instrument
  • Automatic calibration apparatus for electric power instrument

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Embodiment Construction

[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] see figure 1 , figure 1 It is a schematic structural diagram of an automatic calibrating device for a power meter provided by an embodiment of the pr...

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Abstract

The invention provides an automatic calibration apparatus for an electric power instrument. The apparatus comprises a first display device, at least one second display device, at least two collectiondevices and a control device, wherein the first display device is electrically connected with a standard voltage divider and is used for displaying a secondary voltage numeric value of the standard voltage divider, each second display device is electrically connected with one corresponding voltage divider to be tested and used for displaying a secondary voltage numeric value of the corresponding voltage divider to be tested, the first display device and each second display device are respectively arranged opposite to corresponding collection devices, all the collection devices are used for respectively collecting data displayed by the first display device and all the second display device, the control device is electrically connected with all the collection devices and is used for receiving data collected via the collection devices, a value of difference between data displayed via the first display device and data displayed via the second display device is calculated, and whether eachvoltage divider is accurate can be determined according to the value of difference. Via the calibration apparatus provided in the invention, accuracy of calibration results can be improved, and calibration efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of peripheral equipment of a machine vision system, in particular to an automatic calibration device for electric power meters. Background technique [0002] Various types of high-voltage measuring equipment are used in the withstand voltage test of power equipment. The high-voltage measuring system generally includes a primary high-voltage divider and supporting secondary instruments. According to the measurement regulations JJG1007-2005 "DC high-voltage divider verification regulations " and JJG496-1996 "Verification Regulations for Power Frequency High-Voltage Dividers", DC high-voltage voltage dividers and power frequency high-voltage voltage dividers should be tested and calibrated on time. In recent years, there are more and more calibration requirements for high-voltage voltage dividers. [0003] According to the method proposed in the verification regulations, there are two main methods for the verif...

Claims

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Application Information

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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 李智成刘少波李文婷龙兆芝肖凯孙军陈江洪
Owner CHINA ELECTRIC POWER RES INST
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