CN105242231A - Digital electric energy measurement performance detection and tracing method and closed-loop system - Google Patents
Digital electric energy measurement performance detection and tracing method and closed-loop system Download PDFInfo
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- CN105242231A CN105242231A CN201510567103.0A CN201510567103A CN105242231A CN 105242231 A CN105242231 A CN 105242231A CN 201510567103 A CN201510567103 A CN 201510567103A CN 105242231 A CN105242231 A CN 105242231A
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Abstract
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
The present invention relates to a kind of digitalized electric energy metering performance to detect and source tracing method and closed-loop system, belong to Electric Energy Metering Technology field.
Background technology
The inspection of electric energy utensil is national compulsory certification utensil, has a set of tight measuring control system to its measuring control.In measurement technology management, electric energy metering device must perform magnitude tracing upward to national electric energy benchmark, in other words national electric energy benchmark must going down to working measuring instrument.
The transmission of electric energy standard or work implement are traced to the source its fixing layer management system, and standard device comprises electric energy benchmark, standard source, standard scale, is mutually combined into a standard transitive relation figure.
The metering that current traditional analog formula electric energy metrical has it complete is traced to the source figure, clear between rank, tightly become a rounded system each other.
The appearance of Intelligent transformer station has expedited the emergence of a kind of brand-new digitalized electric energy quantitative model, and digitalized electrical energy meter occurs thereupon.Because the physical quantity of electric energy, the standard of tracing to the source of electric energy meter are all based on analog quantity field, digitalized electric energy measurement instrument cannot compare with electric energy benchmark.And digitalized electric energy does not have, yet not benchmark, if therefore digitalized electric energy metering is upwards traced to the source, its chain of tracing to the source interrupts.But the metering of digitalized electric energy measurement instrument is traced to the source and also must to be carried out under current measuring control system.And at present, debating endlessly about digitalized electrical energy meter detection method, detection technique, metering problem of tracing to the source, opinions vary always, therefore set up a set of organically, the digitalized electric energy metering/traceability system of science, extremely urgent.
Summary of the invention
Blank for making up this art at present, the present invention proposes a set of ring-closed metering performance to new digital electric energy metering and detects and traceability system and method, can carry out digital metering Performance Detection and tracing to the source of upwards comparing with simulation electric energy standard, benchmark to digitalized electrical energy meter.
For achieving the above object, the technical solution used in the present invention is as follows:
Digitalized electric energy metering performance detects and traces to the source closed-loop system, comprises numerical value message signals analyser, the virtual power standard source of band D/A digital to analog converter, with the digital standards electric energy meter of A/D analog to digital converter, high-precision analog electric energy meter and tested operating digital electric energy meter, wherein
Digital standards electric energy meter with A/D analog to digital converter implants A/D analog to digital converter in digital standard electric energy meter, makes digital standards electric energy meter become numeral, simulate dual-purpose measurement mechanism;
Virtual power standard source with D/A digital to analog converter implants D/A digital to analog converter in virtual power standard source, makes virtual power standard source become numeral, simulate dual-purpose measurement mechanism;
Numerical value message signals analyser is that one can be veritified, ensure virtual power standard source examination criteria device accurately message data correctness, transmission message data sequential homogeneity and accuracy;
High-precision analog electric energy meter is in digital metering performance testing process, for the standard of receiving country man electric energy datum tool, analog detection/standard transmission is carried out to the virtual power standard source of band D/A digital to analog converter or the digital standards electric energy meter of band A/D analog to digital converter; Trace to the source in process, for tracing to the source to national electric energy benchmark upwards carrying out standard.
The digital standards electric energy meter of aforesaid band A/D analog to digital converter both can be used as a digitizing standard electric energy meter and had detected subordinate's operating digital electric energy meter, become a kind of mock standard electric energy meter by A/D analog to digital converter again and detect subordinate's high-precision analog electric energy meter, also upwards can be traceable to higher level's electric energy benchmark simultaneously.
The virtual power standard source of aforesaid band D/A digital to analog converter both can become a digitizing calibration power source and detect subordinate's operating digital electric energy meter, become a kind of mock standard power source by D/A digital to analog converter again and detect subordinate's simulation electric energy meter, also upwards can be traceable to higher level's electric energy benchmark simultaneously; Described virtual power standard source essence is sample values message generator, and sends message frame equably chronologically.
The detection of digitalized electric energy metering performance and closed-loop system of tracing to the source carry out the method that digitalized electric energy metering performance detects and traces to the source, and it is characterized in that,
Carry out the method that digitalized electric energy metering performance detection/standard is transmitted, comprise the following steps:
1-1) national electric energy benchmark carries out standard transmission to high-precision analog electric energy meter;
1-2) the virtual power standard source of high-precision analog electric energy meter to band D/A digital to analog converter carries out analog detection/standard transmission;
1-3) the virtual power standard source of numerical value message signals analyser to band D/A digital to analog converter carries out numerical value, the transmission of time-base signal detection/standard;
The digital standards electric energy meter of virtual power standard source 1-4) with D/A digital to analog converter to band A/D analog to digital converter carries out analog detection/standard transmission;
Digital standards electric energy meter 1-5) with A/D analog to digital converter carries out digital metering detection/standard transmission under real time digital signal condition to tested operating digital electric energy meter;
Described step 1-2) in, high-precision analog electric energy meter also can be bypassed the immediate leadership and directly be carried out analog detection/standard transmission to the digital standards electric energy meter of band A/D analog to digital converter, then carries out step 1-5);
Described step 1-4) in, the virtual power standard source of band D/A digital to analog converter also can bypass the immediate leadership directly virtual digital signal condition is carried out to tested operating digital electric energy meter under digital metering detect;
Described digitalized electrical energy meter upwards carries out the method that standard is traced to the source, and comprises the following steps:
2-1) tested operating digital electric energy meter is checked to the digital standards electric energy meter application real time digital signal metering of band A/D analog to digital converter or is checked to being with the virtual power standard source application virtual digital signal of D/A digital to analog converter to measure;
Digital standards electric energy meter 2-2) with A/D analog to digital converter is checked to the virtual power standard source application digital signal metering of band D/A digital to analog converter, to being with the virtual power standard source of D/A digital to analog converter to trace to the source or trace to the source directly to high-precision analog standard electric energy meter;
Virtual power standard source 2-3) with D/A digital to analog converter is checked to the metering of numerical value message signals analyser application digital signal, is traced to the source to high-precision analog standard electric energy meter;
2-4) high-precision analog standard electric energy meter is traced to the source to national electric energy benchmark.
The invention has the advantages that: for digitized measurement equipment devises " A/D ", " D/A " converter additional function modules, not only solve analog source tracing problem, simplify digital electric energy traceability system simultaneously, have also been enlarged digitized measurement equipment function and purposes, because these equipment are provided with the function of analogue measurement equipment by converter additional function modules, two obtain at one stroke; The present invention is that digitalized electric energy metering provides a metering that is complete, closed loop and traceability system, put the mutual quantitative relation of the digitized measurement equipment room in order, establish relative specification, science, tight metering network system, and it is consistent with analog electric energy metrical traceability system, ensure metering unitarity, seriousness, possess good economy; Detection traceability system of the present invention is applicable to simulation electric energy metrical, digitalized electric energy measures two kinds of measuring systems, describes detection (standard transmission), standard traces to the source the metering criterion that two kinds of metering process should be followed; The present invention has filled up the blank of digitalized electric energy field of measuring techniques.
Accompanying drawing explanation
Fig. 1 is digitalized electrical energy meter digital metering Performance Detection fundamental diagram of the present invention.
Embodiment
Now with embodiment, the present invention is described in further detail by reference to the accompanying drawings.
As shown in Figure 1, digitalized electric energy metering performance of the present invention detects and comprises numerical value message signals analyser with closed-loop system of tracing to the source, with the virtual power standard source of D/A digital to analog converter, with the digital standards electric energy meter of A/D analog to digital converter, high-precision analog electric energy meter and tested operating digital electric energy meter.Wherein,
Digital standards electric energy meter with A/D analog to digital converter implants A/D analog to digital converter in digital standard electric energy meter, makes digital standards electric energy meter become numeral, simulate dual-purpose measurement mechanism.Like this, digital standards electric energy meter with A/D analog to digital converter both can be used as a digitizing standard electric energy meter and had detected subordinate's operating digital electric energy meter, become a kind of mock standard electric energy meter by A/D analog to digital converter again and detect subordinate's high-precision analog electric energy meter, also upwards can be traceable to higher level's electric energy benchmark simultaneously.
Virtual power standard source with D/A digital to analog converter implants D/A digital to analog converter in virtual power standard source, makes virtual power standard source become numeral, simulate dual-purpose measurement mechanism.Like this, virtual power standard source with D/A digital to analog converter both can become a digitizing calibration power source and detect subordinate's operating digital electric energy meter, become a kind of mock standard power source by D/A digital to analog converter again and detect subordinate's simulation electric energy meter, upwards can be traceable to higher level's electric energy benchmark simultaneously.Here virtual power standard source essence is sample values message generator, and sends message frame equably chronologically.
Numerical value message signals analyser is that one can be veritified message data correctness, transmission message data sequential homogeneity and accuracy, ensures virtual power standard source examination criteria device accurately.
High-precision analog electric energy meter is in digital metering Performance Detection (standard transmission) process, for the standard of receiving country man electric energy datum tool, analog detection (standard transmission) is carried out to the virtual power standard source of band D/A digital to analog converter or the digital standards electric energy meter of band A/D analog to digital converter.High-precision analog electric energy meter is traced to the source in process, for tracing to the source to national electric energy benchmark upwards carrying out standard.
How the simulated method of digital metering of the present invention sets up this problem of digitalized electric energy metering traceability system if solving, have also been enlarged the function of digitalized electrical energy meter simultaneously, its composition, structure are consistent with traditional electric energy meter, original measuring control system can be continued to use completely, setting up new measuring system without the need to considering again, in fact also can not set up pure so-called " a digitized measurement traceability system ".
As shown in Figure 1, digitalized electrical energy meter digital metering Performance Detection/standard delivery methods of the present invention is as follows:
1-1) national electric energy benchmark carries out standard transmission to high-precision analog electric energy meter;
1-2) the virtual power standard source of high-precision analog electric energy meter to band D/A digital to analog converter carries out analog detection/standard transmission;
1-3) the virtual power standard source of numerical value message signals analyser to band D/A digital to analog converter carries out numerical value, the transmission of time-base signal detection/standard;
The digital standards electric energy meter of virtual power standard source 1-4) with D/A digital to analog converter to band A/D analog to digital converter carries out analog detection/standard transmission;
Digital standards electric energy meter 1-5) with A/D analog to digital converter carries out digital metering detection/standard transmission under real time digital signal condition to tested operating digital electric energy meter.
At above-mentioned steps 1-2) in, high-precision analog electric energy meter also can be bypassed the immediate leadership and directly be carried out analog detection/standard transmission to the digital standards electric energy meter of band A/D analog to digital converter, then carries out step 1-5).
At above-mentioned steps 1-4) in, the virtual power standard source of band D/A digital to analog converter also can bypass the immediate leadership directly virtual digital signal condition is carried out to tested operating digital electric energy meter under digital metering detect.
It is as follows that digitalized electrical energy meter of the present invention upwards carries out standard source tracing method:
2-1) tested operating digital electric energy meter is to the digital standards electric energy meter application real-time digital letter of band A/D analog to digital converter
Number metering is checked or virtual power standard source application virtual digital signal metering to band D/A digital to analog converter is checked;
Digital standards electric energy meter 2-2) with A/D analog to digital converter is checked to the virtual power standard source application digital signal metering of band D/A digital to analog converter, to being with the virtual power standard source of D/A digital to analog converter to trace to the source or trace to the source directly to high-precision analog standard electric energy meter;
Virtual power standard source 2-3) with D/A digital to analog converter is checked to the metering of numerical value message signals analyser application digital signal, is traced to the source to high-precision analog standard electric energy meter;
2-4) high-precision analog standard electric energy meter is traced to the source to national electric energy benchmark.
Claims (4)
1. digitalized electric energy metering performance detects and traces to the source closed-loop system, it is characterized in that, comprise numerical value message signals analyser, with the virtual power standard source of D/A digital to analog converter, with the digital standards electric energy meter of A/D analog to digital converter, high-precision analog electric energy meter and tested operating digital electric energy meter, wherein
Digital standards electric energy meter with A/D analog to digital converter implants A/D analog to digital converter in digital standard electric energy meter, makes digital standards electric energy meter become numeral, simulate dual-purpose measurement mechanism;
Virtual power standard source with D/A digital to analog converter implants D/A digital to analog converter in virtual power standard source, makes virtual power standard source become numeral, simulate dual-purpose measurement mechanism;
Numerical value message signals analyser is that one can be veritified, ensure virtual power standard source examination criteria device accurately message data correctness, transmission message data sequential homogeneity and accuracy;
High-precision analog electric energy meter is in digital metering performance testing process, for the standard of receiving country man electric energy datum tool, analog detection/standard transmission is carried out to the virtual power standard source of band D/A digital to analog converter or the digital standards electric energy meter of band A/D analog to digital converter; Trace to the source in process, for tracing to the source to national electric energy benchmark upwards carrying out standard.
2. digitalized electric energy metering performance detects and traces to the source closed-loop system according to claim 1, it is characterized in that, the digital standards electric energy meter of described band A/D analog to digital converter both can be used as a digitizing standard electric energy meter and had detected subordinate's operating digital electric energy meter, become a kind of mock standard electric energy meter by A/D analog to digital converter again and detect subordinate's high-precision analog electric energy meter, also upwards can be traceable to higher level's electric energy benchmark simultaneously.
3. digitalized electric energy metering performance detects and traces to the source closed-loop system according to claim 1, it is characterized in that, the virtual power standard source of described band D/A digital to analog converter both can become a digitizing calibration power source and detect subordinate's operating digital electric energy meter, become a kind of mock standard power source by D/A digital to analog converter again and detect subordinate's simulation electric energy meter, also upwards can be traceable to higher level's electric energy benchmark simultaneously; Described virtual power standard source essence is sample values message generator, and sends message frame equably chronologically.
4. the digitalized electric energy metering performance detection according to claims 1 to 3 any one and closed-loop system of tracing to the source carry out the method that digitalized electric energy metering performance detects and traces to the source, and it is characterized in that,
Carry out the method that digitalized electric energy metering performance detection/standard is transmitted, comprise the following steps:
1-1) national electric energy benchmark carries out standard transmission to high-precision analog electric energy meter;
1-2) the virtual power standard source of high-precision analog electric energy meter to band D/A digital to analog converter carries out analog detection/standard transmission;
1-3) the virtual power standard source of numerical value message signals analyser to band D/A digital to analog converter carries out numerical value, the transmission of time-base signal detection/standard;
The digital standards electric energy meter of virtual power standard source 1-4) with D/A digital to analog converter to band A/D analog to digital converter carries out analog detection/standard transmission;
Digital standards electric energy meter 1-5) with A/D analog to digital converter carries out digital metering detection/standard transmission under real time digital signal condition to tested operating digital electric energy meter;
Described step 1-2) in, high-precision analog electric energy meter also can be bypassed the immediate leadership and directly be carried out analog detection/standard transmission to the digital standards electric energy meter of band A/D analog to digital converter, then carries out step 1-5);
Described step 1-4) in, the virtual power standard source of band D/A digital to analog converter also can bypass the immediate leadership directly virtual digital signal condition is carried out to tested operating digital electric energy meter under digital metering detect;
Described digitalized electrical energy meter upwards carries out the method that standard is traced to the source, and comprises the following steps:
2-1) tested operating digital electric energy meter is checked to the digital standards electric energy meter application real time digital signal metering of band A/D analog to digital converter or is checked to being with the virtual power standard source application virtual digital signal of D/A digital to analog converter to measure;
Digital standards electric energy meter 2-2) with A/D analog to digital converter is checked to the virtual power standard source application digital signal metering of band D/A digital to analog converter, to being with the virtual power standard source of D/A digital to analog converter to trace to the source or trace to the source directly to high-precision analog standard electric energy meter;
Virtual power standard source 2-3) with D/A digital to analog converter is checked to the metering of numerical value message signals analyser application digital signal, is traced to the source to high-precision analog standard electric energy meter;
2-4) high-precision analog standard electric energy meter is traced to the source to national electric energy benchmark.
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