Electrical energy meter calibration stand and checking method thereof

A calibration method and technology of electric energy meters, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve the problems of large errors in calculating electric energy pulses, and achieve good calibration results

Inactive Publication Date: 2008-03-12
SHENZHEN CLOU ELECTRONICS
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an electric energy meter calibration platform...

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  • Electrical energy meter calibration stand and checking method thereof
  • Electrical energy meter calibration stand and checking method thereof
  • Electrical energy meter calibration stand and checking method thereof

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Embodiment Construction

[0027] The electric energy meter verification platform of the present invention adds a timer to the electric energy error counter, thereby calculating the fractional part of the standard electric energy pulse number, and improving the accuracy of calculating electric energy error.

[0028] As shown in FIG. 4 , the electric energy meter calibration station includes a standard electric energy meter, a programmable power source, an electric energy error calculator and electric energy meter positions.

[0029] The programmable power source outputs alternating current to the standard electric energy meter and the calibrated electric energy meter placed at the electric energy meter position, so that the standard electric energy meter and the calibrated electric energy meter each output standard electric energy pulses and calibrated electric energy pulses.

[0030] The standard electric energy meter outputs standard electric energy pulses, which are transmitted to the electric energy ...

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Abstract

The present invention discloses an electric energy meter calibration stand and a calibration method. The electric energy meter comprises a power source, a standard electric energy meter and an electric energy meter position. Wherein, the power source outputs AC electric power to the standard electric energy meter and an electric energy meter to be calibrated is inserted in the electric energy meter position to respectively generate a standard electric energy pulse and a calibrated electric energy pulse. The electric energy meter calibration stand is additionally composed of an electric energy error calculator. The electric energy error calculator is composed of a counter and a timer, of which the counter collects and works out quantity of the standard electric energy pulse and the calibrated electric energy pulse. Moreover, the timer collects and measures width of the standard electric energy pulse in each period, thus calculating quantity of the standard electric energy pulse in the collection period and accurately working out pulse error of the calibrated electric energy meter. The error calculator of the electric energy meter calibration stand of the present invention extends quantity of the standard electric energy pulse to decimal fraction, reduces pulse error and improves calibration accuracy with the calibrated electric energy pulse as a collection reference.

Description

【Technical field】 [0001] The invention relates to an electric energy meter calibration platform, in particular to an electric energy meter calibration platform and a calibration method for reducing electric energy errors. 【Background technique】 [0002] In the power system, all kinds of electric energy meters need to check their electric energy measurement errors before they are connected to the network, and the electric energy meters with qualified electric energy errors are allowed to be connected to the network. Due to the large amount of electric energy meters used, in order to calibrate more electric energy meters at one time and improve the work efficiency of the metering department, a special electric energy meter calibration platform is currently used. [0003] As shown in Figure 1, the electric energy meter calibration station includes a standard electric energy meter, a program-controlled power source, an electric energy error calculator and an electric energy mete...

Claims

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Application Information

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IPC IPC(8): G01R35/04
Inventor 欧勇
Owner SHENZHEN CLOU ELECTRONICS
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