CN106054107A - Fast batch electric energy meter false actuation test device pulse alignment control module - Google Patents
Fast batch electric energy meter false actuation test device pulse alignment control module Download PDFInfo
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- CN106054107A CN106054107A CN201610361939.XA CN201610361939A CN106054107A CN 106054107 A CN106054107 A CN 106054107A CN 201610361939 A CN201610361939 A CN 201610361939A CN 106054107 A CN106054107 A CN 106054107A
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- electric energy
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
Abstract
The invention relates to a fast batch electric energy meter false actuation test device pulse alignment control module. According to a batch electric energy meter start test verification time test scheme, a large current is switched on firstly to shorten time before verification; in a false actuation test, at a certain value of voltage U, the large current I<m> is used for time T<1>, a time timing target is achieved through a counter, and target electric energy consumption E<1> is achieved; and then, at the certain value of the voltage U, electric power is switched off, whether a second pulse occurs in a certain time T<2> is verified, an electric energy meter is not qualified if the second pulse occurs in the certain time T<2>, and the electric energy meter is qualified if the second pulse does not occur in the certain time T<2>. Batch electric energy meter verification efficiency is effectively improved through compression for waiting time before a test and test time of the batch electric energy meter false actuation test. And the method can be applied to verification systems of various kinds of artificial and automatic electric energy metering devices, be in favor of further improving an intelligent electric energy meter verification scheme and satisfying a meter use need of a power supply unit, and improve a verification management level of a metering verification device.
Description
Technical field
The invention belongs to electric energy metrical FIELD OF THE INVENTIONThe, especially a kind of rapid batch electric energy meter false actuation test device pulse pair
Neat control module.
Background technology
Electric energy meter is under a kind of measurement rated voltage, the measurement instrument of the time-varying power over time integration passed through.
False actuation test is the accuracy test of electric energy meter.Relative method is generally used to carry out the accuracy test of electric energy meter, i.e.
Carried equal-wattage by power source to standard scale and tested table, Error Calculator receive standard scale and the output pulse of tested table
And calculate the relative error of tested table.Standard scale and the tested table the most nominally meter constant (arteries and veins often exported by 1kWh electric energy
Strokes per minute), think the meter constant K of standard scale during measurementsIt is actual value, and the meter constant K of tested tablemIt it is nominal value.KsLong-range
In Km.Same electric energy meter KmBeing definite value, therefore the biggest pulse frequency of bearing power is the highest, pulse spacing TpThe least.
Electric energy meter false actuation test method is: under conditions of the obstructed electric current of a making alive, at the time T of regulationno-loadIn, quilt
Inspection table output umber of pulse can not be more than 1.This requirement is equivalent to, and under the conditions of false actuation test, the tested table pulse spacing is more than Tno-load。
Owing to false actuation test power is zero, therefore theory Tno-loadFor infinity, then need during test to make Tno-loadThe biggest, usually more than
30min。
Along with carrying out of Guo Wang company low-voltage collecting meter reading engineering, change the outfit intelligent meter in high volume, and then causes intelligent meter to examine and determine work
Work amount increases severely.In order to complete verification task, the wilderness demand of reply intelligent meter, the present invention proposes rapid batch electric energy meter shunt running
Assay device pulse alignment control module, by reducing the time of electric energy meter accuracy test, improves electric energy meter detection efficiency.
Summary of the invention
In place of it is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of rational in infrastructure, easy to use, safe
Reliably, high efficiency rapid batch electric energy meter false actuation test device pulse alignment control module is put forward.
The present invention solves it and technical problem is that and take techniques below scheme to realize:
A kind of rapid batch electric energy meter false actuation test device pulse alignment control module, it is characterised in that:
The outfan of alternating current power supply connects power-supply controller of electric, and the outfan of power-supply controller of electric connects tested electric energy meter to tested
Electric energy meter is powered, and tested electric energy meter connects a pulse signal capture module, the output/outfan of this pulse signal capture module
Mouth connection central controller, flows to central controller by the pulse signal captured, and, central controller sends signal control
The work of pulse signal capture module processed；
One outfan of central controller connects power-supply controller of electric, the work of regulation and control power-supply controller of electric；
Tested electric energy meter is also simultaneously connected with voltage sample module and current sample module, and current sample module and voltage are adopted
The outfan of original mold block is all connected to one and takes advantage of the input with circuit to be transferred to take advantage of by current sample result and voltage sample result
And circuit, this takes advantage of outfan with circuit to connect the input of reference circuit, and the outfan of reference circuit connects central controller；
One output/output port of central controller connects high-speed, high precision timer, carries out data interchange；
One input connection standard source table of central controller；
Electric energy meter starting test calibrating time testing program in batches: first lead to big electric current and examine and determine the front time, in shunt running to shorten
In test, under certain value voltage U, use larger current ImBy time T1, realize time timing target by enumerator, reach
To target power consumption E1；Afterwards under fixed value voltage U, power-off, calibrating is in certain time interval T2The most whether second pulse occurs,
Occur be then defective, occur without be qualified.
And, concretely comprise the following steps:
(1) by installing enumerator on standard scale；
(2) the calibrating of batch electric energy meter starting test, calculates under certain value voltage U, uses larger current Im to pass through the time
T1, when reaching target power consumption E1, obtains the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value；
(3) batch electric energy meter false actuation test calibrating, under certain value voltage U, uses larger current Im by tested table and mark
Quasi-table；
(4) batch Basic Error of Energy Meter test calibrating, when rolling counters forward arrives umber of pulse Ks1, at certain value voltage
Under U, switch to test standard electric current IQ, until tested table sends pulse；
(5) calibrating terminates: carry out verification result judgement, it is judged that for "Yes" then off-test；Judged result is that "No" is then tested
Do not terminate, then repeat step (1) to step (4) until calibrating terminate.
Advantages of the present invention and good effect be:
The present invention, by being compressed waiting time and test period before the test of batch electric energy meter false actuation test, has
Effect improves batch electric energy meter calibration efficiency.And the method can be applicable to all kinds of artificial and automatization's electric power meter
Verification system, is conducive to improving intelligent electric energy meter calibrating scheme further and meeting power supply unit table demand, improves metering
Assay device inspection administration level.
Accompanying drawing explanation
Fig. 1 is chopped pulse separation standard time TQTheory diagram；
Fig. 2 is electric energy meter accuracy test control principle drawing.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following example are descriptive
, it not determinate, it is impossible to limit protection scope of the present invention with this.
A kind of rapid batch electric energy meter false actuation test device pulse alignment control module, this control module chopped pulse is spaced
Standard time TQTheory diagram as it is shown in figure 1,
The outfan of alternating current power supply connects power-supply controller of electric, and the outfan that power supply controls connects tested electric energy meter to tested electricity
Can power by table, tested electric energy meter connects a pulse signal capture module, the output/output port of this pulse signal capture module
Connect central controller, the pulse signal captured is flowed to central controller, and, central controller sends signal and controls
The work of pulse signal capture module；
One outfan of central controller connects power-supply controller of electric, the work of regulation and control power-supply controller of electric；
Tested electric energy meter is also simultaneously connected with voltage sample module and current sample module, and current sample module and voltage are adopted
The outfan of original mold block is all connected to one and takes advantage of the input with circuit to be transferred to take advantage of by current sample result and voltage sample result
And circuit, this takes advantage of outfan with circuit to connect the input of reference circuit, and the outfan of reference circuit connects central controller；
One output/output port of central controller connects high-speed, high precision timer, carries out data interchange；
One input connection standard source table of central controller.
Electric energy meter false actuation test calibrating time testing program in batches:
Electric energy meter false actuation test scheme is first to lead to big electric current to examine and determine the front time, in false actuation test, one to shorten in batches
Under fixed value voltage U, use larger current ImBy time T1, realize time timing target by enumerator, reach target electric energy and disappear
Consumption E1；Afterwards under fixed value voltage U, power-off, calibrating is in certain time interval T2The most whether second pulse occurs, occurs then for not conforming to
Lattice, occur without be qualified.
Concretely comprise the following steps:
(1) by installing enumerator on standard scale；
(2) the calibrating of batch electric energy meter starting test, calculates under certain value voltage U, uses larger current Im to pass through the time
T1, when reaching target power consumption E1, obtains the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value；
(3) batch electric energy meter false actuation test calibrating, under certain value voltage U, uses larger current Im by tested table and mark
Quasi-table；
(4) batch Basic Error of Energy Meter test calibrating, when rolling counters forward arrives umber of pulse Ks1, at certain value voltage
Under U, switch to test standard electric current IQ, until tested table sends pulse；
(5) calibrating terminates: carry out verification result judgement, it is judged that for "Yes" then off-test；Judged result is that "No" is then tested
Do not terminate, then repeat step (1) to step (4) until calibrating terminate.
Ultimate principle
The accuracy test of electric energy meter generally uses relative method to carry out the accuracy test of electric energy meter, i.e. by power source to mark
Quasi-table and tested table conveying equal-wattage, received standard scale and the output pulse of tested table by Error Calculator and calculate tested table
Relative error.Standard scale and tested table the most nominally meter constant (umber of pulse often exported by 1kWh electric energy), during measurement
Think the meter constant K of standard scalesIt is actual value, and the meter constant K of tested tablemIt it is nominal value.KsMuch larger than Km.Same class
Type electric energy meter KmOf substantially equal, therefore the biggest pulse frequency of bearing power is the highest, and interpulse period is the least.
The time occurred due to first pulse of tested table has randomness, when same batch tested table quantity is more than 30
Time, the note waiting time is Tw.Then theory analysis shows, TwProbability more than 0.9 is up to 0.96.The most general Tw＞ 0.9.
The electric energy consumed between two adjacent pulses of tested table is a definite value, is designated as E.Imagine under certain value voltage U,
Use larger current ImBy time T1, reach target power consumption E1；Afterwards under fixed value voltage U, switch to test standard electricity
Stream IQ, by time T2, reach remainder power consumption E2.And remember under fixed value voltage U, reach electric energy E value, be required through
Standard time in pulse spacing is TQ。
Then there is E=E1+E2=U Im·T1+U·IQ·T2, TP=T1+T2。
Wherein, E1And ImIt is independent variable, T can be obtained by the two value1, E2And IQIt is independent variable, can by the two value
Obtain T2.And then available interpulse period.Work as Im＞ IQTime, then there is TP＜ TQ, thus when reaching to reduce pulse spacing standard
Between TQTarget.And then by controlling IQValue, can realize T1＜ TW。
Such as make Im=20IQ, E1=0.9E, E2=0.1E.
Then can pass through E1=U Im·T1, E=E1+E2=U Im·T1+U·IQ·T2And TP=T1+T2,
Calculate to obtain T1≈0.45·T2, ≈ 1.45*T2<<TQ≈10*T2,T1＜ TW。
Due to KsMuch larger than Km, then the pulse spacing of standard scale is understood much smaller than TQ.By installing counting on standard scale
Device, obtains the umber of pulse about K that standard scale is exported in electric energy E1 values1.By using larger current to pass through forward part energy, when
Pulse approximate number K remembered by enumerators1Time, switch tested table and pass through electric current, reach to count purpose.
Although disclosing embodiments of the invention and accompanying drawing for the purpose of illustration, but those skilled in the art can managing
Solving: without departing from the spirit and scope of the present invention, various replacements, to change and modifications be all possible, therefore, and the model of the present invention
Enclose and be not limited to embodiment and accompanying drawing disclosure of that.
Claims (2)
1. a rapid batch electric energy meter false actuation test device pulse alignment control module, it is characterised in that:
The outfan of alternating current power supply connects power-supply controller of electric, and the outfan of power-supply controller of electric connects tested electric energy meter to tested electric energy
Table is powered, and tested electric energy meter connects a pulse signal capture module, and the output of this pulse signal capture module/output port is even
Connect central controller, the pulse signal captured is flowed to central controller, and, central controller sends signal and controls arteries and veins
Rush the work of signal capture module；
One outfan of central controller connects power-supply controller of electric, the work of regulation and control power-supply controller of electric；
Tested electric energy meter is also simultaneously connected with voltage sample module and current sample module, current sample module and voltage sample mould
The outfan of block is all connected to one and takes advantage of the input with circuit to be transferred to current sample result and voltage sample result take advantage of and electricity
Road, this takes advantage of outfan with circuit to connect the input of reference circuit, and the outfan of reference circuit connects central controller；
One output/output port of central controller connects high-speed, high precision timer, carries out data interchange；
One input connection standard source table of central controller；
Electric energy meter starting test calibrating time testing program in batches: first lead to big electric current and examine and determine the front time, at false actuation test to shorten
In, under certain value voltage U, use larger current ImBy time T1, realize time timing target by enumerator, reach mesh
Mark power consumption E1；Afterwards under fixed value voltage U, power-off, calibrating is in certain time interval T2The most whether second pulse occurs, occurs
Be then defective, occur without be qualified.
Rapid batch electric energy meter false actuation test device pulse the most according to claim 1 alignment control module, its feature exists
In: concretely comprise the following steps:
(1) by installing enumerator on standard scale；
(2) the calibrating of batch electric energy meter starting test, calculates under certain value voltage U, uses larger current Im by time T1, reaches
During to target power consumption E1, obtain the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value；
(3) batch electric energy meter false actuation test calibrating, under certain value voltage U, uses larger current Im by tested table and standard
Table；
(4) batch Basic Error of Energy Meter test calibrating, when rolling counters forward arrives umber of pulse Ks1, under certain value voltage U,
Switch to test standard electric current IQ, until tested table sends pulse；
(5) calibrating terminates: carry out verification result judgement, it is judged that for "Yes" then off-test；Judged result is that "No" is then tested and do not tied
Bundle, then repeat step (1) to step (4) until calibrating terminate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597017A (en) * | 2018-12-26 | 2019-04-09 | 郑州万特电气股份有限公司 | A kind of rapid detection method of intelligent electric energy meter starting and shunt running |
| CN110133569A (en) * | 2019-05-28 | 2019-08-16 | 国网河北省电力有限公司邢台供电分公司 | Electric energy meter calibration method and device |
| CN111707983A (en) * | 2020-07-13 | 2020-09-25 | 郑州万特电气股份有限公司 | Method, equipment, system and medium for testing constant of electric energy meter |
| CN111965586A (en) * | 2020-08-25 | 2020-11-20 | 安徽南瑞中天电力电子有限公司 | Method and device for testing starting and creeping of pre-accumulated electric energy quick electric energy meter |
| CN112051536A (en) * | 2020-07-30 | 2020-12-08 | 国网江西省电力有限公司电力科学研究院 | Dynamic starting characteristic test method for electric energy meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112051536A (en) * | 2020-07-30 | 2020-12-08 | 国网江西省电力有限公司电力科学研究院 | Dynamic starting characteristic test method for electric energy meter |
| CN111965586A (en) * | 2020-08-25 | 2020-11-20 | 安徽南瑞中天电力电子有限公司 | Method and device for testing starting and creeping of pre-accumulated electric energy quick electric energy meter |
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