CN103558579B - The method that electric energy meter calibrating apparatus is carried out the calibrating of current loop trouble point - Google Patents
The method that electric energy meter calibrating apparatus is carried out the calibrating of current loop trouble point Download PDFInfo
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- CN103558579B CN103558579B CN201310545452.3A CN201310545452A CN103558579B CN 103558579 B CN103558579 B CN 103558579B CN 201310545452 A CN201310545452 A CN 201310545452A CN 103558579 B CN103558579 B CN 103558579B
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Abstract
The present invention is to solve calibrating intelligent meter epi-position loose contact in checking procedure, the problem that short trouble occurs, provide a kind of electric energy meter calibrating apparatus, including stage body, described stage body is provided with universal meter, calibrating indicator lamp, scram button, stage body electric current wiring interface, electric energy meter current wiring interface, epi-position data display unit, and multiple electric energy meter epi-positions for accommodating electric energy meter to be examined and determine and multiple meter hanging frame mounting electric energy meter to be examined and determine, wherein, the plurality of epi-position is connected in series.This device can quickly find out the fault point of current loop, meanwhile, compatible strong, it is adaptable to the rapid verification of the single-phase electric energy meter to the three separate numbers of equal difference.
Description
Technical field
The present invention relates to electric energy meter calibration technical field, particularly relate to a kind of electric energy meter calibrating apparatus, for quickly detection electric energy meter calibrating apparatus epi-position short-circuit conditions.
Background technology
Electric energy meter is the instrument being specifically used to measure certain time period electric energy aggregate-value, belongs to and examines by force measurement instrument, just can must install and use after assay approval.
The principle of electric energy meter calibrating apparatus calibrating electric energy meter is to use method of standard table as shown in Figure 1.During calibrating electric energy meter, electric energy meter is articulated in the epi-position of calibrating installation by first inspection, the current loop of tested electric energy meter and being cascaded, voltage circuit is connected in parallel, and reference voltage that calibrating installation produces and reference current export current loop and the voltage circuit of tested electric energy meter.Owing to current loop is series connection, as long as so there being an ammeter to contact the bad fault that verification electric current all can be caused to rise with calibrating installation, this is often because the loose contact of the binding post of the binding post of device and certain electric energy meter causes the result of current loop open circuit.Owing to the electric energy that verifies on device expresses 24 or 16 more than simultaneously, and termination contact is bad cannot judge from electric energy meter outward appearance, so trouble point is difficult to search.Traditional way is to pull down the electric energy meter in school needed on device again to mount, and verifies, to be sometimes repeated several times and could finally find trouble point, and such way wastes time and energy.Along with carrying out of electric energy meter outskirts of a town unified dispensing work, electric energy heading inspection task increases significantly, and traditional malfunction elimination method has had a strong impact on completing of verification task.
The Chinese utility model patent application of Application No. CN200720124922.9 provides a kind of electrical energy meter calibration, have good luck pressure calibrating integrated apparatus, including calibration equipment and pressure multi-functional tester, the output of calibration equipment and pressure multi-functional tester is connected with tested electric energy meter by high-voltage relay, control high-voltage relay by change-over switch and realize calibration equipment and the switching of pressure multi-functional tester, calibration equipment and the pressure device of having good luck of electric energy meter are united two into one by this integrated apparatus, can be by the starting test of electric energy meter, false actuation test, error test, constant test and ac voltage withstanding test are completed by the switching of simple switch, without repeating mounting table meter, wiring, repeat typing table meter information and trnasshipment engine route link, primary connection can complete all calibrating projects.
But, the apparatus structure of above-mentioned prior art is complicated, relatively costly, and cannot complete single-phase intelligent calibrating installation is the verification task in the case of the pocket watch of before and after two sides.
Summary of the invention
The technical problem to be solved is: solve calibrating intelligent meter epi-position loose contact in checking procedure, problem short trouble occur, and in particular how meeting single-phase intelligent calibrating installation is the verification needs in the case of the pocket watch of before and after two sides.
In order to solve above-mentioned technical problem, the invention provides a kind of electric energy meter calibrating apparatus, including stage body, described stage body is provided with universal meter, calibrating indicator lamp, scram button, stage body electric current wiring interface, electric energy meter current wiring interface, epi-position data display unit, and multiple electric energy meter epi-positions for accommodating electric energy meter to be examined and determine and multiple meter hanging frame mounting electric energy meter to be examined and determine, wherein, the plurality of epi-position is connected in series.
Further, described in, electric energy meter to be examined and determine is two-phase electric energy meter or three-phase electric energy meter.
Further, described universal meter is digimer.
Further, described universal meter is with buzzer.
Further, described electric energy meter current wiring interface includes the binding post of multiple different colours, and each color represents the phase place number that electric energy meter to be examined and determine is corresponding.
Further, the binding post of corresponding two same colors of each phase place of electric energy meter to be examined and determine.
The invention has the beneficial effects as follows: quickly find out the fault point of current loop, meanwhile, compatible strong, it is adaptable to the rapid verification of the single-phase electric energy meter to the three separate numbers of equal difference.
Accompanying drawing explanation
Fig. 1 is electric energy meter calibrating apparatus operation principle block diagram；
Fig. 2 is the panel wiring diagram after equipment for three-phase electrical energy meter pocket watch according to an embodiment of the invention；
Fig. 3 is the method flow diagram that the electric energy meter calibrating apparatus according to the present invention carries out the calibrating of current loop trouble point；
Fig. 4 is that three-phase electric energy meter according to an embodiment of the invention is through calibrating fault-free schematic diagram；
Fig. 5 is that three-phase electric energy meter according to an embodiment of the invention is through examining and determine schematic diagram that is faulty and that carry out fault location；
Fig. 6 be detection failure according to an embodiment of the invention separate time wiring schematic diagram.
Detailed description of the invention
The specific embodiment of the present invention is described in detail below in conjunction with Figure of description.
According to one embodiment of present invention, electric energy meter calibrating apparatus includes: stage body, described stage body is provided with stage body indicator lamp 1, stage body scram button 2, stage body Current Voltage binding post 3, ammeter Current Voltage binding post 7, epi-position liquid crystal display 4, and multiple connect terminal box 6 based on the electric energy meter epi-position of table epi-position 5 and multiple table mounting electric energy meter to be examined and determine by accommodating stage body, wherein, the plurality of epi-position is connected in series.
Preferred embodiment as shown in Figure 2, is the panel of equipment for three-phase electrical energy meter, totally 16 epi-position.In this preferred embodiment, ammeter Current Voltage binding post 7 uses electric current binding post.Each epi-position has 6 electric current binding posts, it is divided into yellow, green, red trichromatism (successively), represent A, B, C three-phase, often there are two binding posts mutually, it is that electric current is into and out of terminal respectively, being connected in inside at inlet wire post of the outlet column of the 1st epi-position of every phase and the 2nd epi-position communicates, and communicates ... the rest may be inferred inside the 2nd outlet and the 3rd inlet wire.When verifying electric energy meter, ammeter is articulated on calibrating installation, and the current coil of the every phase within ammeter is crimped on the sub into and out of terminal of each epi-position.The most whole current loop turns on.
If ammeter crimping is bad, loose contact, will often occur verifying the fault that electric current cannot rise, this is often because the loose contact of the binding post of the binding post of device and certain electric energy meter causes the result of short circuit of current loop.At this point it is possible to separate by carrying out failure judgement with universal meter, be on earth electric current A, B, C which occur in that open circuit, it is also possible to specific to fault epi-position, be that a certain piece of table occurs in that open circuit fault.
According to the current loop trouble point calibration method of the embodiment that above-mentioned electric energy meter to be examined and determine is three-phase electric energy meter, method flow diagram as shown in Figure 3, comprise the steps:
1, confirm that fault is separate
According to Fig. 6, calibrating installation stage body A, B, C three-phase is connected with an ammeter respectively, starting test to be done before table meter is formally examined and determine.When doing starting test, such as stage body alarm sound, red led is bright, then observe ammeter registration；If A phase current table electric current is 0, then it represents that A phase current fault, with this, then can determine whether to be out of order separate.
2, calibration equipment step-down
When doing starting test, need the Current Voltage of calibrating installation rises to the numerical value that People's Republic of China's national metrological verification regulations " electronic type AC energy meter JJG596-2012 " measurement verification regulations specify.If verification Current Voltage rises to specified value, then need not calibrating installation step-down, continue calibrating；After occurring that verification electric current cannot rise fault, by stopping calibrating by lower platform body scram button 2, it is zero that calibrating installation voltage will be gradually reduced, and is then threaded to " AC700V " gear with multitester conversion switch, measure the potential winding of electric energy meter, confirm that voltage has reduced to zero.
3, universal meter self-inspection
Multitester conversion switch is threaded to Test Diode gear i.e., then by red and black table rod short circuit, if universal meter buzzer sends loud sound continuously, LCDs shows " 000 " printed words simultaneously, illustrates that function of multimeter is normal, passes through self-inspection；Otherwise use the universal meter of normal work instead or keep in repair this fault universal meter.
4, detection " bug list "
The principle of detection is exactly the electric energy meter current coil being serially connected with the universal meter measurement with buzzer, and coil itself is path and resistance is the least, as long as so it is exactly logical that coil contacts fine whole loop with calibrating installation, and otherwise will open circuit.Wherein, if stage body binding post and table meter binding post loose contact, will result in open circuit, if stage body connects table, quantity is more, will result in and cannot find which open circuit for the moment.Therefore, present invention employs universal meter detection circuit method.Concrete mode is: the table rod red, black of universal meter is overlapped on respectively the inlet wire binding post of first electric energy meter current coil (coil is separate to be determined by step 1) and second/epi-position (if 24 epi-positions, it is simply that the 12nd；If 16 epi-positions, it is simply that the 8th table；The like) the current outlet binding post of electric energy meter, if universal meter buzzer sends the most overcast sound, the numeral that LCDs shows simultaneously is relatively big, illustrates that " bug list " is at surveying range；If the sound that contrary buzzer is continuous and loud, the numeral that LCDs shows is less, illustrates that bug list, at another surveying range, is then measured by compromise method iteration, finally determined " bug list " position.
5, again verify
Again mounting " bug list ", tests with universal meter, after confirming that fault gets rid of, more whole table meters on calibrating installation again.
In order to describe above-mentioned flow process in detail, the example of two calibratings will be enumerated again below.Wherein, take four tables in 16 tables and carry out checking test, be divided into two kinds of inspection situations of Fig. 3 and Fig. 4:
As shown in Figure 4, it is that above-mentioned three-phase electric energy meter to be examined and determine is through examining and determine trouble-free schematic diagram.Its basis for estimation be universal meter test certain phase turnover communicate, display without exception.The three-phase electric energy meter of four 3*220/380V3*5 (60) A has been mounted on the stage body of this calibrating installation, first the rotary switch of universal meter is threaded to Ω gear, then the Toona sureni 8 of universal meter is overlapped on the inlet wire binding post of A phase current coil of first table meter, on the black excellent 9 outlet binding posts being overlapped on the 4th table meter A phase current coil, now the buzzer of universal meter sends the loudest buzz, the numeral of liquid crystal display is less, about in the range of≤0.5 Ω, for normal display.This surveying range fault-free table is described.
As it is shown in figure 5, be that above-mentioned three-phase electric energy meter to be examined and determine is through examining and determine schematic diagram that is faulty and that carry out fault location.Now, the three-phase electric energy meter of four 3*220/380V3*5 (60) A has been mounted on stage body, first the rotary switch of universal meter is threaded to Ω gear, then the Toona sureni 8 of universal meter is overlapped on the inlet wire binding post of B phase current coil of first table meter, on the black excellent 9 outlet binding posts being overlapped on the 4th table meter B phase current coil, the buzzer auditory tone cues of universal meter without or intermittently, liquid crystal display simultaneously is 0 or glimpses between different numerical value, illustrates that bug list is at this surveying range.By that analogy, reduce detection range and will soon find bug list.
Above each embodiment is only to be described the preferred embodiment of the present invention; not the scope of the present invention is defined; on the premise of designing spirit without departing from the present invention; various deformation that technical scheme is made by this area ordinary skill technical staff and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (4)
1. method electric energy meter calibrating apparatus being carried out the calibrating of current loop trouble point, comprises the steps:
(1) confirm that fault is separate；Stage body A, B, C three-phase of calibrating installation is connected with an ammeter respectively, starting test to be done before formal calibrating: such as stage body alarm sound, red led is bright, then observe ammeter registration；If A phase current table electric current is 0, then it represents that A phase current fault, judge that fault is separate with this；
(2) calibrating installation step-down；When doing starting test, need the Current Voltage of calibrating installation rises to the numerical value that People's Republic of China's national metrological verification regulations " electronic type AC energy meter JJG596-2012 " specifies；If verification Current Voltage rises to specified value, then need not calibrating installation step-down, continue calibrating；After occurring that verification electric current cannot rise fault, by stopping calibrating by lower platform body scram button, it is zero that calibrating installation voltage will be gradually reduced, and is then threaded to " AC700V " gear with multitester conversion switch, measure the potential winding of electric energy meter, confirm that voltage has reduced to zero；
(3) universal meter self-inspection；Multitester conversion switch is threaded to Test Diode gear, and then by red and black table rod short circuit, if universal meter buzzer sends loud sound continuously, LCDs shows " 000 " printed words simultaneously, illustrates that function of multimeter is normal, passes through self-inspection；Otherwise use the universal meter of normal work instead or keep in repair this fault universal meter；
(4) detection " bug list "；Table red, the black rod of universal meter is overlapped on the inlet wire binding post of first electric energy meter current coil and the current outlet binding post of the 1/1st position electric energy meter respectively, if universal meter buzzer sends the most overcast sound, the numeral that LCDs shows simultaneously is relatively big, illustrates that " bug list " is at surveying range；If the sound that contrary buzzer is continuous and loud, the numeral that LCDs shows is less, illustrate that bug list is at another surveying range, then measure by compromise method iteration, finally determining " bug list " position, the separate of described first electric energy meter current coil is determined by step (1)；
(5) again verify；Again mounting " bug list ", tests with universal meter, after confirming that fault is got rid of, more again loads onto whole table meter on calibrating installation；
Wherein, described electric energy meter calibrating apparatus includes stage body, described stage body is provided with universal meter, calibrating indicator lamp, scram button, stage body electric current wiring interface, electric energy meter current wiring interface, epi-position data display unit, and multiple electric energy meter epi-positions for accommodating electric energy meter to be examined and determine and multiple meter hanging frame mounting electric energy meter to be examined and determine, wherein, the plurality of epi-position is connected in series, described in electric energy meter to be examined and determine be two-phase electric energy meter or three-phase electric energy meter.
Method the most according to claim 1, it is characterised in that described universal meter is digimer.
Method the most according to claim 1 and 2, it is characterised in that described electric energy meter current wiring interface includes the binding post of multiple different colours, each color represents the phase place number that electric energy meter to be examined and determine is corresponding.
Method the most according to claim 1 and 2, it is characterised in that the binding post of corresponding two same colors of each phase place of electric energy meter to be examined and determine.
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| CN201310545452.3A CN103558579B (en) | 2013-11-06 | 2013-11-06 | The method that electric energy meter calibrating apparatus is carried out the calibrating of current loop trouble point |
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| CN104459260B (en) * | 2014-11-13 | 2016-04-20 | 国家电网公司 | Electric energy metering device intelligence carry system and carry detection method thereof |
| CN109459716A (en) * | 2018-10-26 | 2019-03-12 | 浙江涵普电力科技有限公司 | Secondary circuit status checkout instrument calibrating installation |
| CN113189535A (en) * | 2021-05-17 | 2021-07-30 | 国网江苏省电力有限公司无锡供电分公司 | Electric energy meter calibrating installation with electric shock prevention function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102854487A (en) * | 2012-04-19 | 2013-01-02 | 辽宁省电力有限公司铁岭供电公司 | Parallel communication calibrating device of three-phase intelligent electric energy meter |
| CN102928812A (en) * | 2012-11-22 | 2013-02-13 | 深圳市航天泰瑞捷电子有限公司 | Calibration method and device for electric energy meter |
| CN203643593U (en) * | 2013-11-06 | 2014-06-11 | 国网安徽省电力公司淮南供电公司 | Electric energy meter verification apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854487A (en) * | 2012-04-19 | 2013-01-02 | 辽宁省电力有限公司铁岭供电公司 | Parallel communication calibrating device of three-phase intelligent electric energy meter |
| CN102928812A (en) * | 2012-11-22 | 2013-02-13 | 深圳市航天泰瑞捷电子有限公司 | Calibration method and device for electric energy meter |
| CN203643593U (en) * | 2013-11-06 | 2014-06-11 | 国网安徽省电力公司淮南供电公司 | Electric energy meter verification apparatus |
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