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An integrated calibration device for single-phase and three-phase electric energy meters

A technology of three-phase electric energy meter and calibration device, applied in the direction of measuring device, measuring electrical variable, instrument, etc., can solve the problems of increased equipment investment, inflexible use, low versatility, etc., to improve utilization, save manpower and Material resources, the effect of reducing production costs

Active Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using two kinds of calibration devices not only takes up space and affects efficiency, but also increases equipment investment, which is inflexible in use and low in versatility

Method used

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  • An integrated calibration device for single-phase and three-phase electric energy meters
  • An integrated calibration device for single-phase and three-phase electric energy meters

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Embodiment Construction

[0014] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0015] An integrated verification device for a single-phase three-phase electric energy meter, including a single-chip microcomputer module, and a current measurement circuit, a voltage measurement circuit, and a display module respectively connected to the single-chip microcomputer module, wherein the single-chip microcomputer module and the display module are all prior art, and will not be described here Let me repeat. Since the current measurement circuit and the voltage measurement circuit are not universal, the traditional energy meter calibration device can only calibrate one type of energy meter, that is, the single-phase energy meter calibr...

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Abstract

The invention discloses a novel single-three-phase electric energy meter integrated verifying unit. The unit comprises a single chip microcomputer module, a current measurement loop, a voltage measurement loop and a display module, wherein the current measurement loop, the voltage measurement loop and the display module are connected with the single chip microcomputer module. The unit is characterized in that the voltage measurement loop comprises a voltage type power amplifier, the output end of the voltage type power amplifier is connected with a switching module which is connected with a three-phase boosting transformer and a single-phase boosting transformer, a feedback coil of the three-phase boosting transformer and a feedback coil of the single-phase boosting transformer are connected with the voltage type power amplifier through the switching module, the output end of the three-phase boosting transformer is provided with a three-phase multi-tap port capable of measuring a three-phase electric energy meter, and the output end of the single-phase boosting transformer is provided with a single-phase multi-tap port capable of measuring a single-phase electric energy meter. The unit meets the verification requirements for the single-phase electric energy meter and the three-phase electric energy meter.

Description

technical field [0001] The invention relates to an integrated calibration device for single-phase and three-phase electric energy meters. Background technique [0002] The electric energy meter calibration device is specially designed for the power system on-site inspection of the operation error and fault detection of the grid meter. Operators can quickly, safely and reliably measure meter errors and wiring errors with the help of the electric energy meter calibration device, which provides an effective basis for power system meter personnel to correctly measure and replenish electricity. The electric energy meter calibration device specifically includes a current measurement circuit, a voltage measurement circuit, a single-chip microcomputer module and a display module, which greatly improves the convenience of use. [0003] However, the existing design of the electric energy meter verification device can only verify one type of electric energy meter, that is, the single-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
Inventor 纪峰周超鲍进田正其穆小星丁戌子
Owner STATE GRID CORP OF CHINA
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