CN106093830A - Rapid batch Basic Error of Energy Meter test assay device pulse alignment control module - Google Patents
Rapid batch Basic Error of Energy Meter test assay device pulse alignment control module Download PDFInfo
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- CN106093830A CN106093830A CN201610365303.2A CN201610365303A CN106093830A CN 106093830 A CN106093830 A CN 106093830A CN 201610365303 A CN201610365303 A CN 201610365303A CN 106093830 A CN106093830 A CN 106093830A
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- energy meter
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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
Abstract
The present invention relates to a kind of rapid batch Basic Error of Energy Meter test assay device pulse alignment control module, the present invention was compressed by waiting time before the test of testing batch Basic Error of Energy Meter and test period, was effectively increased batch electric energy meter calibration efficiency.And the method can be applicable to all kinds of artificial and verification system of automatization's electric power meter, be conducive to improving intelligent electric energy meter calibrating scheme further and meeting power supply unit table demand, improve metering and calibrating device inspection administration level.
Description
Technical field
The invention belongs to electric energy metrical FIELD OF THE INVENTIONThe, especially a kind of rapid batch Basic Error of Energy Meter test calibrating dress
Put pulse alignment 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.
Elementary error test is the accuracy test of electric energy meter.Relative method is generally used to carry out the accuracy examination of electric energy meter
Test, i.e. carried equal-wattage by power source to standard scale and tested table, Error Calculator receive the defeated of standard scale and tested table
Go out pulse and calculate the relative error of tested table.Standard scale and tested table the most nominally meter constant are (often defeated by 1kWh electric energy
The umber of pulse gone out), 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.
KsMuch larger than Km.Same electric energy meter KmBeing definite value, therefore the biggest pulse frequency of bearing power is the highest, pulse spacing TpThe least.
Basic Error of Energy Meter test method is: in the time that test determines tested table N (usual N < 10) the individual pulse spacing,
Umber of pulse M that standard scale is sent.According to formulaCalculate the relative error of tested table.Survey
The tested table of a length of wait of amount time sends the time T of first pulse and NT N number of interpulse periodpSum.Theoretical point
Analysis shows, the time occurred due to first pulse of tested table has randomness, when same batch tested table quantity is more than 30,
Waiting time, T was more than 0.9TpProbability be up to 0.96.
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, it is basic that the present invention proposes rapid batch electric energy meter
Error test assay device pulse alignment control module, by reducing the time of electric energy meter accuracy test, improves electric energy meter inspection
Survey 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 Basic Error of Energy Meter test assay 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 Basic Error of Energy Meter test assay 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；
Basic Error of Energy Meter testing program in batches:
Interpulse period Tq, power-supply controller of electric is first passed through certain time interval T1Big electric current, realizes time timing by enumerator
Target；
Then, under fixed value voltage U, test standard electric current I is switched toQ, by time T2, reach remainder power consumption
E2；
The tested table of a length of wait of Basic Error of Energy Meter test calibrating time sends the time T of first pulseqArrive
N*T interval time of n-th pulseqSum.
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 was pressed by waiting time before the test of testing batch Basic Error of Energy Meter and test period
Contracting, is effectively increased batch electric energy meter calibration efficiency.And the method can be applicable to all kinds of artificial and automatization's electric energy metrical
The verification system of device, is conducive to improving intelligent electric energy meter calibrating scheme further and meeting power supply unit table demand, promotes
Metering and calibrating 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 Basic Error of Energy Meter test assay device pulse alignment control module, this control module shortens
Standard time in pulse spacing 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.
Basic Error of Energy Meter testing program in batches:
First lead to big electric current to shorten T interpulse period of tested tableq, the most first it is passed through certain time interval T1Big electric current, by meter
Number device realizes time timing target；Then, under fixed value voltage U, test standard electric current I is switched toQ, by time T2, reach surplus
Remaining part divides power consumption E2；The tested table of a length of wait of Basic Error of Energy Meter test calibrating time sends first pulse
Time TqN*T interval time to n-th pulseqSum；
And for the certificate test waiting time, theory analysis shows, the time tool occurred due to first pulse of tested table
Having randomness, when same batch tested table quantity is more than 30, the waiting time, T was more than 0.9TqProbability be up to 0.96, equally may be used
To realize shortening with the method for interpulse period shortening tested table by first leading to big electric current.
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 Basic Error of Energy Meter test assay 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；
Basic Error of Energy Meter testing program in batches:
Interpulse period Tq, power-supply controller of electric is first passed through certain time interval T1Big electric current, realizes time timing mesh by enumerator
Mark；
Then, under fixed value voltage U, test standard electric current I is switched toQ, by time T2, reach remainder power consumption E2；
The tested table of a length of wait of Basic Error of Energy Meter test calibrating time sends the time T of first pulseqTo n-th
N*T interval time of pulseqSum.
Rapid batch Basic Error of Energy Meter the most according to claim 1 test assay device pulse alignment control module,
It is characterized in that: 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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| CN201610365303.2A CN106093830A (en) | 2016-05-27 | 2016-05-27 | Rapid batch Basic Error of Energy Meter test assay device pulse alignment control module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230180A (en) * | 2020-09-27 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Signal source phase modulation method of electric energy meter calibrating device based on FPGA |
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Application publication date: 20161109 |