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 PDF

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Publication number
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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CN
China
Prior art keywords
electric energy
energy meter
test
pulse
time
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Application number
CN201610361939.XA
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Chinese (zh)
Inventor
季浩
李野
曹国瑞
何黎菲
顾强
解岩
董得龙
刘裕德
于学均
朱逸群
滕永兴
郭景涛
张蒙
张一蒙
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国网天津市电力公司
国家电网公司
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Application filed by 国网天津市电力公司, 国家电网公司 filed Critical 国网天津市电力公司
Priority to CN201610361939.XA priority Critical patent/CN106054107A/en
Publication of CN106054107A publication Critical patent/CN106054107A/en

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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 and G01R33/00 - G01R35/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the preceding groups
    • G01R35/04—Testing or calibrating of apparatus covered by the preceding groups of instruments for measuring time integral of power or current

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

Rapid batch electric energy meter false actuation test device pulse alignment control module

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.
CN201610361939.XA 2016-05-27 2016-05-27 Fast batch electric energy meter false actuation test device pulse alignment control module CN106054107A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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