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Rapid electric energy meter verification method based on segmented current technology

A technology of segmented current and calibration method, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., to achieve the effect of shortening calibration time and reducing time

Active Publication Date: 2015-07-29
广州市格宁电气有限公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Since the country has not issued a measurement regulation that recommends a higher electric energy constant, the method of increasing the electric energy constant has not yet been promoted in my country

Method used

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  • Rapid electric energy meter verification method based on segmented current technology

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Embodiment Construction

[0030] Such as figure 1 As shown, the present invention is based on the electric energy meter rapid verification method of subsection current technology, comprises the following steps:

[0031] Step 1, obtain the following parameters of the watt-hour meter to be calibrated: rated voltage U, rated current I, constant C of the watt-hour meter and error level, and calculate the theoretical time parameters Among them, I q It is the starting current suitable for the error level of the calibrated electric energy meter stipulated in the national metrology verification regulation JJG596-2012, and the theoretical time parameter T 0 Indicates that the watt-hour meter to be verified has an input voltage of U and an input current of 5*I q Operating under the working conditions, it outputs a theoretical calculation time of electric energy pulse.

[0032] The starting current of electric energy meters with different error levels is stipulated in the National Metrology Verification Regul...

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Abstract

The invention discloses a rapid electric energy meter verification method based on segmented current technology. The method comprises a start testing process and a creep testing process; and each of the start testing process and the creep testing process comprises a pre-test phase, a first segmented current test phase and a second segmented current test phase. On the premise that national metering detection rules and prescriptions are satisfied, time of the start test and creep test of the electric energy meter is reduced, and the aim of rapid verification for the electric energy meter is achieved; and it is proved that the verification time of the rapid electric energy meter verification method of the invention is shorted for tens of times compared with a routine electric energy meter verification method.

Description

technical field [0001] The invention relates to a fast calibration method for electric energy meters based on segmented current technology. Background technique [0002] Electric energy meters are widely used in the measurement of various levels of electric power. Since they involve various enterprises, institutions and residential electricity transaction settlements, they are compulsory verification items clearly stipulated in the Metrology Law. A large number of new installations and rotations of electric energy meters need to be verified in accordance with relevant national standards every year. Procedures and measurement standards for verification. According to the requirements of the National Verification Regulations JJG596-2012 "Electronic AC Energy Meter", the energy meter needs to do start-up and creep tests, and the corresponding test methods and calculation formulas are specified. Since the electric energy constant of the commonly installed electronic energy meter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
Inventor 邹至刚李祯祥黄国华刘紫熠贺艳平王维李立雄
Owner 广州市格宁电气有限公司
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