System and method for evaluating accuracy of digital electric energy meter

A digital electric energy meter and evaluation system technology, which is applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems of inability to test or accurately test the reliability of received data and work stability of the digital electric energy meter, so as to improve the accuracy of measurement. high degree of accuracy

Inactive Publication Date: 2013-02-13
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a digital electric energy meter accuracy evaluation system and its method, which solves the problem that the current electric energy meter test method cannot test or accurately test the reliability of the received data and the working stability of the digital electric energy meter

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  • System and method for evaluating accuracy of digital electric energy meter
  • System and method for evaluating accuracy of digital electric energy meter
  • System and method for evaluating accuracy of digital electric energy meter

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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] figure 1 An embodiment of a digital electric energy meter accuracy evaluation system of the present invention is shown: a digital electric energy meter accuracy evaluation system, comprising:

[0029] Analog standard sources for generating analog voltage and current data;

[0030] The analog standard meter is used to convert the analog voltage and current data generated inside the analog standard source into power pulses, and perform measurement and data display;

[0031] Digital energy meter calibrator, used to send SV data frame message to the meter under test for energy measurement to g...

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Abstract

The invention relates to the technical field of electric energy metering test and specifically relates to a system and a method for evaluating accuracy of a digital electric energy meter. The system comprises a simulation standard source, a simulation standard meter and a digital electric energy meter calibrator. The system and the method can be widely applied to electric energy metering devices of intelligent substations and are capable of achieving high accuracy of the simulation standard source and the simulation standard meter, accurately evaluating the digital electric energy meter and performing site test; and besides, the accuracy of the digital electric energy meter can be tested, and simultaneously, the digital electric energy meter calibrator can simulate abnormal conditions of message frame loss, net storms and the like, so that the shunt running, starting and harmonic influence quantity of the electric energy meter can be conveniently detected, and measurement accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of electric energy metering and testing, in particular to a digital electric energy meter accuracy evaluation system and a method thereof. Background technique [0002] With the maturity of technologies such as electronic transformers, intelligent primary equipment and microelectronics technology, smart substations or digital substations have become a development trend. In digital substations, energy meters and transformers no longer constitute an electrical circuit, but optical cables connect electronic voltage and current transformers, intelligent primary equipment, etc. to transmit digital signals. Digital energy meters and merging units or electronic transformers have basically adopted high-reliability optical fiber communication methods. Digital energy meters will be important equipment for energy measurement in smart substations, so the demand for energy meters in digital substations will also increas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
Inventor 江波陈贤顺杨勇波艾兵杨华云
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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