Digital electric energy measurement performance detection and tracing method and closed-loop system
A technology of electric energy measurement and closed-loop system, which is applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve the problems that digital electric energy measuring instruments cannot compare electric energy benchmarks, and the traceability chain is interrupted, so as to simplify the digital electric energy traceability system, expand functions and Purpose, the effect of ensuring the uniformity of measurement
Active Publication Date: 2016-01-13
STATE GRID CORP OF CHINA +2
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Problems solved by technology
Since the physical quantities of electric energy and the traceability standards of electric energy meters are based on the analog field, digital electric energy measuring instruments cannot be compared with electric energy benchmarks
However, there is no and no benchmark for digital electric energy, so if digital electric energy measurement is traced upwards, its traceability chain will be interrupted
However, under the current measurement management system, the traceability of digital electric energy measuring instruments must be carried out.
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[0031] The present invention will be described in further detail in conjunction with the accompanying drawings and specific embodiments.
[0032] Such as figure 1 As shown, the digital electric energy metering performance detection and traceability closed-loop system of the present invention includes a numerical message signal analyzer, a virtual power standard source with a D / A digital-to-analog converter, and a digital standard electric energy meter with an A / D analog-to-digital converter , High-precision analog energy meters and digital energy meters to be inspected. in,
[0033] The digital standard watt-hour meter with A / D analog-to-digital converter is to implant the A / D analog-to-digital converter in the digital standard watt-hour meter, so that the digital standard watt-hour meter becomes a digital and analog measuring device. In this way, the digital standard watt-hour meter with A / D analog-to-digital converter can be used as a digital standard watt-hour meter to de...
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The invention discloses a digital electric energy measurement performance detection and tracing method and a closed-loop system. An A / D converter is implanted in a digital standard electric energy meter, the digital standard electric energy meter becomes a digital and analog measurement device, and a D / A converter is implanted in a virtual power standard source, and the virtual power standard source becomes a digital and analog measurement device. Digital measurement performance detection and upward tracing are carried out on the digital electric energy meter. A complete and closed-loop measurement and tracing system is provided for digital electric energy measurement, a measurement criterion followed during a detection (standard transfer) measurement process and a standard tracing measurement process are explained, and blankness in the technical field of digital electric energy measurement is filled.
Description
technical field [0001] The invention relates to a digital electric energy metering performance detection and traceability method and a closed-loop system, belonging to the technical field of electric energy metering. Background technique [0002] The inspection of electric energy appliances is a national compulsory inspection appliance, and there is a strict measurement management system for its measurement management. In the management of metering technology, electric energy measuring instruments must implement the traceability of the value up to the national electric energy benchmark, or the national electric energy benchmark must be able to pass down to the working measuring instruments. [0003] There is a fixed hierarchical management system for the transfer of electric energy standards or the traceability of working equipment. Standard equipment includes electric energy references, standard sources, and standard tables, which are combined into a standard transfer relat...
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IPC IPC(8): G01R35/04
Inventor 穆小星徐晴刘建田正其周超祝宇楠
Owner STATE GRID CORP OF CHINA