CN105487041A - Electric energy metering device performance detection system - Google Patents
Electric energy metering device performance detection system Download PDFInfo
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- CN105487041A CN105487041A CN201510998644.9A CN201510998644A CN105487041A CN 105487041 A CN105487041 A CN 105487041A CN 201510998644 A CN201510998644 A CN 201510998644A CN 105487041 A CN105487041 A CN 105487041A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The invention discloses an electric energy metering device performance detection system, comprising a current loop detection system; the current loop detection system comprises a three-phase power source, an adapter board, a standard gauge and a gauge position of a gauge to de detected, wherein the three-phase power source is electrically connected to the adapter board; the adapter board is electrically connected to the gauge position of the gauge to be detected; the gauge position of the gauge to be detected is electrically connected to the standard gauge; the standard gauge is electrically connected to a three-phase power source; and the gauge position of the gauge to be detected comprises an A phase switch K1-1, B phase switches K1-2 and a K1-4 and a C phase switch K1-3. The invention controls the A phase current, the B phase current and the C phase current to be connected and disconnected through the A phase switch, the B phase switch and the C phase switch on the gauge position of the gauge to be detected, which enables the single-phase electric energy meter and the three-phase electric energy meter to be detected on the same gauge position of the gauge to be detected. Besides, the electric energy metering device performance detection system can detect the collection terminals of the collection device, the concentrator, etc, and realizes multi-purposes in one device, improves the detection efficiency, and saves the cost.
Description
Technical field
The present invention relates to electric energy detection system field, particularly relate to a kind of electric energy measuring equipment performance detecting system.
Background technology
At present, the mode of China's electric energy metrical mainly comprises massive quantity power supply and measurement, high for low meter and the low meter of low confession etc., the justice that above metering method cannot thoroughly realize measuring technically, just and reasonable, causes the inaccuracy of metering performance.China loses the profit of great number every year in power marketing, not only cause the waste of national limited electric energy, also the anxiety of electric power energy is caused, negative effect is brought to electric power enterprise, national life and national interests, therefore, metering performance detects is the indispensable important step of current power industry.
The factor affecting electric energy metrical accuracy is very many, and complicated.Can electric energy meter and acquisition terminal correctly measure the correctness depending mainly on voltage, electric current, power factor and installation and wiring.Wherein, change the normal wiring of voltage circuit of electric energy metrical or deliberately cause metered voltage loop fault, causing the potential winding of electric energy meter to lose voltage or the minimizing of suffered voltage, thus cause electricity to be counted less; And, change metering current and to reflux normal wiring or deliberately cause metering current loop fault, cause the current coil no current of electric energy meter by or only by portion of electrical current, thus cause these two kinds of factors of few quantity calculation to be important steps that electric energy metrical detects.
At present, to the detection of metering outfit, need exploitation and purchase special supporting pick-up unit.Such as, the detection of electric energy meter need be completed by electric energy meter calibrating apparatus, and the detection of terminal class metering outfit need be completed by special terminal class pick-up unit.Such detection mode not only causes testing inefficiency, causes the idle of ample resources and waste simultaneously.
Summary of the invention
The invention provides a kind of electric energy measuring equipment performance detecting system, low to solve detection efficiency in prior art, the technical matters that cost is high.
A kind of electric energy measuring equipment performance detecting system, described electric energy measuring equipment performance detecting system comprises current return detection system, described current return detection system comprises: three phase power source, card extender, standard scale and table epi-position to be measured, wherein, described three phase power source is electrically connected with described card extender; Described card extender is electrically connected with described table epi-position to be measured; Described table epi-position to be measured is electrically connected with described standard scale; Described standard scale is electrically connected with described three phase power source; Described table epi-position to be measured also comprises A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3.
Preferably, described electric energy measuring equipment performance detecting system also comprises voltage circuit detection system, described voltage circuit detection system comprises: described three phase power source, described card extender and described table epi-position to be measured, wherein, described three phase power source three-phase voltage be electrically connected with the voltage terminal of described card extender, the voltage terminal of described card extender is electrically connected with the voltage terminal of described table epi-position to be measured.
Preferably, described table epi-position to be measured is 10 table epi-positions to be measured of connecting successively.
Preferably, described table epi-position to be measured also comprises B phase current cut-off relay K1-4, and described B phase current cut-off relay K1-4 is connected to described table epi-position B phase current two ends to be measured.
Preferably, described electric energy measuring equipment performance detecting system also comprises plurality of voltages isolator, described plurality of voltages isolator, one end of described plurality of voltages isolator is electrically connected the voltage incoming end of described three phase power source, the voltage incoming end of the described table epi-position to be measured of other end electrical connection of described plurality of voltages isolator.
The technical scheme that embodiments of the invention provide can comprise following beneficial effect:
A kind of electric energy measuring equipment performance detecting system, described electric energy measuring equipment performance detecting system comprises current return detection system, described current return detection system comprises: three phase power source, card extender, standard scale and table epi-position to be measured, wherein, described three phase power source is electrically connected with described card extender; Described card extender is electrically connected with described table epi-position to be measured; Described table epi-position to be measured is electrically connected with described standard scale; Described standard scale is electrically connected with described three phase power source; Described table epi-position to be measured also comprises A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3.Three phase power source in the present invention, card extender, standard scale and table epi-position to be measured form closed electric current and voltage circuit jointly, and switching on and off by A phase current, B phase current and C phase current in the A phase switch in table epi-position to be measured, B phase switch and C phase switch control rule table to be measured, make can either detect single-phase electric energy meter, three-phase electric energy meter in identical table epi-position to be measured, also the acquisition terminal such as collector, concentrator can be detected, really achieve one multiplex, improve detection efficiency, cost-saving effect.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the present invention.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the current return detection system provided in the embodiment of the present invention;
Fig. 2 is the circuit connection diagram of the another kind of current return detection system provided in the embodiment of the present invention;
Fig. 3 is the circuit connection diagram of the voltage circuit detection system provided in the embodiment of the present invention;
Symbol represents:
1-1: table epi-position A phase positive pole to be measured, 1-2: table epi-position A phase negative pole to be measured, 1-3: table epi-position B phase positive pole to be measured, 1-4: table epi-position B phase negative pole to be measured, 1-5: table epi-position C phase positive pole to be measured, 1-6: table epi-position C phase negative pole to be measured, 4-card extender A phase, 5-card extender B phase, 6-card extender C phase, 11-1: standard scale C phase negative pole, 11-2: standard scale C phase positive pole, 11-3: standard scale B phase negative pole, 11-4: standard scale B phase positive pole, 11-5: standard scale A phase negative pole, 11-6: standard scale A phase positive pole, 12-1: three phase power source A phase negative pole, 12-2: three phase power source A phase positive pole, 12-3: three phase power source B phase negative pole, 12-4: three phase power source B phase positive pole, 12-5: three phase power source C phase negative pole, 12-6: three phase power source C phase positive pole.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the present invention.On the contrary, they only with as in appended claims describe in detail, the example of device that aspects more of the present invention are consistent.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiment.
Please refer to Fig. 1, the circuit connection diagram of the electric energy measuring equipment performance detecting system provided in the embodiment of the present invention is provided.
As shown in Figure 1, a kind of electric energy measuring equipment performance detecting system, described electric energy measuring equipment performance detecting system comprises current return detection system, described current return detection system comprises: three phase power source, card extender, standard scale and table epi-position to be measured, wherein, described three phase power source is electrically connected with described card extender; Described card extender is electrically connected with described table epi-position to be measured; Described table epi-position to be measured is electrically connected with described standard scale; Described standard scale is electrically connected with described three phase power source; Described table epi-position to be measured also comprises A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3.
Three phase power source provided by the invention comprises A phase, B phase and C phase, wherein, 12-1 is three phase power source A phase negative pole, 12-2 is three phase power source A phase positive pole, 12-3 is three phase power source B phase negative pole, 12-4 is three phase power source B phase positive pole, and 12-5 is three phase power source C phase negative pole, and 12-6 is three phase power source C phase positive pole; Standard scale also comprises A phase, B phase and C phase, wherein, 11-1 is standard scale C phase negative pole, 11-2 is standard scale C phase positive pole, 11-3 is standard scale B phase negative pole, 11-4 is standard scale B phase positive pole, and 11-5 is standard scale A phase negative pole, and 11-6 is standard scale A phase positive pole, table epi-position to be measured also comprises A phase, B phase and C phase, wherein, 1-1 is table epi-position A phase positive pole to be measured, and 1-2 is table epi-position A phase negative pole to be measured, 1-3 is table epi-position B phase positive pole to be measured, 1-4 is table epi-position B phase negative pole to be measured, and 1-5 is table epi-position C phase positive pole to be measured, and 1-6 is table epi-position C phase negative pole to be measured.The three-phase negative pole of three phase power source is electrically connected with the three-phase positive pole of table to be measured respectively by card extender, namely the A phase negative pole of three phase power source is electrically connected with the A phase positive pole of table to be measured by A phase card extender, the B phase negative pole of three phase power source is electrically connected with the B phase positive pole of table to be measured by B phase card extender, and the C phase negative pole of three phase power source is electrically connected with the C phase positive pole of table to be measured by C phase card extender.The three-phase negative pole of table to be measured is electrically connected with the three-phase positive pole of standard scale respectively, and the three-phase negative pole of standard scale is electrically connected with the three-phase positive pole of three phase power source, and three phase power source, card extender, standard scale and table epi-position to be measured form current return jointly.
Described B phase current cut-off relay K1-4 is connected to described table epi-position B phase current two ends to be measured.Same, when table epi-position to be measured is 10 table epi-positions to be measured of connecting successively, the B phase current two ends of each table epi-position to be measured are all connected with B phase current cut-off relay.
Cut-off relay utilizes the effect of electric current to close or the device of disconnecting circuit, for automatically controlling and protection automatically.In most cases, relay is exactly an electromagnet, and this electromagnet armature can close or disconnect one or several contact point.Have in the winding of electromagnet electric current by time, armature is attracted by electromagnet, thus just changes the state of contact.When detecting single-phase meter, the live wire current-series of single-phase meter, neutral line current series connection.Now the voltage of single-phase meter has been added in connect terminal and B of A and has connected between terminal, now, B phase cut-off relay need be disconnected, disconnect by B phase current, prevent A phase current from being affected the accuracy of test findings by the voltage circuit of each table epi-position to be measured and the shunting of B phase current loop.
Table epi-position to be measured provided by the invention also comprises A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3.When needs detect three-phase electric energy meter and the acquisition terminal such as collector, concentrator, three-phase electric energy meter and acquisition terminal are loaded table epi-position to be measured, and closed A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3; When needs detect single-phase electric energy meter, three-phase electric energy meter and acquisition terminal are loaded table epi-position to be measured, and close A phase K switch 1-1 and disconnect B phase K switch 1-4.
Three phase power source in the present invention, card extender, standard scale and table epi-position to be measured form closed electric current and voltage circuit jointly, and control switching on and off of A phase current in table to be measured, B phase current and C phase current by A phase K switch 1-1, the B phase K switch 1-2 in table epi-position to be measured and K1-4, C phase K switch 1-3, make can either detect single-phase electric energy meter, three-phase electric energy meter in identical table epi-position to be measured, also the acquisition terminal such as collector, concentrator can be detected, really achieve one multiplex, improve detection efficiency, cost-saving effect.
Please refer to Fig. 2, the circuit connection diagram of the another kind of electric energy measuring equipment performance detecting system provided in the embodiment of the present invention is provided.
As shown in Figure 2, described table epi-position to be measured is 10 table epi-positions to be measured of connecting successively, can detect 10 electric energy meters or acquisition terminal simultaneously.Each table epi-position to be measured is all connected with A phase switch, B phase switch and C phase switch, for switching on and off of control A phase current, B phase current and C phase current.
Please refer to Fig. 3, the circuit connection diagram of the voltage circuit detection system provided in the embodiment of the present invention is provided.
As shown in Figure 3, described electric energy measuring equipment performance detecting system also comprises voltage circuit detection system, described voltage circuit detection system comprises: described three phase power source, described card extender and described table epi-position to be measured, wherein, described three phase power source three-phase voltage be electrically connected with the voltage terminal of described card extender, the voltage terminal of described card extender is electrically connected with the voltage terminal of described table epi-position to be measured.
In Fig. 3,1,4 of top (have 10 groups, represent 10 epi-positions) be live wire and the zero terminal of single-phase electric energy meter respectively, 1 is fire line terminal, the A phase voltage of electrical connection three phase power source, 4 is zero terminal, N (neutral line) voltage of electrical connection three phase power source.
In Fig. 3,1,2,3,4 (totally 10 groups, represent 10 epi-positions) of below are the A phase of three-phase electric energy meter, B phase, C phase and neutral line terminal respectively, respectively the relevant voltage of electrical connection three-phase standard source.
In the electric energy measuring equipment performance detecting system that the present embodiment provides, current return detection system and voltage circuit detection system share a three phase power source, the three-phase voltage (three-phase and four-line) of three phase power source accesses the voltage terminal of card extender, the three-phase voltage incoming end of the voltage terminal parallel connection access table epi-position to be measured of card extender, the three-phase voltage incoming end of table epi-position to be measured is electrically connected with the voltage terminal of described standard scale respectively, finally forms voltage circuit.
When detecting three-phase electric energy meter and acquisition terminal, three-phase voltage counts the voltage terminal of three-phase electric energy meter and acquisition terminal by voltage connector.When detecting single-phase meter, the voltage of single-phase meter directly takes from the current terminal of live wire and zero line, uses the A phase voltage of standard scale, accesses on the electric current binding post of A phase and B phase after plurality of voltages isolator is separated.
Electric energy meter voltage all under normal circumstances adopts form in parallel to connect, electric current adopts the mode of series connection to connect, because the fire line terminal of single-phase electric energy meter current input terminal and voltage is a shared signal terminal, when examining and determine polylith single-phase electric energy meter at the same time, then there will be voltage circuit by the situation of the short circuit of current loop of epi-position above, cause epi-position above normally to work.In order to avoid the appearance of above-mentioned phenomenon, the present invention introduces plurality of voltages isolator (namely isolating PT), the voltage signal of all table epi-positions to be measured realizes separate by isolation PT by plurality of voltages isolator, thus be independent of each other between voltage circuit and current return when ensureing to detect, reach mutually isolated object.
The annexation of plurality of voltages isolator is the voltage access plurality of voltages isolator of three phase power source, and access standard scale in parallel and table epi-position to be measured after plurality of voltages isolator is separated, electric current is then direct to be together in series table epi-position to be measured from three phase power source.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiment.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing of the present invention.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
The above is only the specific embodiment of the present invention, those skilled in the art is understood or realizes the present invention.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. an electric energy measuring equipment performance detecting system, it is characterized in that, described electric energy measuring equipment performance detecting system comprises current return detection system, and described current return detection system comprises: three phase power source, card extender, standard scale and table epi-position to be measured, wherein
Described three phase power source is electrically connected with described card extender;
Described card extender is electrically connected with described table epi-position to be measured;
Described table epi-position to be measured is electrically connected with described standard scale;
Described standard scale is electrically connected with described three phase power source;
Described table epi-position to be measured also comprises A phase K switch 1-1, B phase K switch 1-2 and K1-4, C phase K switch 1-3.
2. electric energy measuring equipment performance detecting system according to claim 1, it is characterized in that, described electric energy measuring equipment performance detecting system also comprises voltage circuit detection system, described voltage circuit detection system comprises: described three phase power source, described card extender and described table epi-position to be measured, wherein, described three phase power source three-phase voltage be electrically connected with the voltage terminal of described card extender, the voltage terminal of described card extender is electrically connected with the voltage terminal of described table epi-position to be measured.
3. electric energy measuring equipment performance detecting system according to claim 1, is characterized in that, described table epi-position to be measured is 10 table epi-positions to be measured of connecting successively.
4. electric energy measuring equipment performance detecting system according to claim 3, it is characterized in that, described electric energy measuring equipment performance detecting system also comprises plurality of voltages isolator, described plurality of voltages isolator, one end of described plurality of voltages isolator is electrically connected the voltage incoming end of described three phase power source, the voltage incoming end of the described table epi-position to be measured of other end electrical connection of described plurality of voltages isolator.
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| CN201510998644.9A CN105487041A (en) | 2015-12-28 | 2015-12-28 | Electric energy metering device performance detection system |
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| CN201510998644.9A CN105487041A (en) | 2015-12-28 | 2015-12-28 | Electric energy metering device performance detection system |
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| CN107356897A (en) * | 2017-07-20 | 2017-11-17 | 云南电网有限责任公司电力科学研究院 | Carrier electric energy meter detecting system and detection method |
| CN107454143A (en) * | 2017-06-30 | 2017-12-08 | 国网四川省电力公司电力科学研究院 | A kind of digitalized electrical energy meter metering performance intelligent polling method of wide area measurement mode |
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Application publication date: 20160413 |