CN106054109A - Fast and batched electric energy meter start-up test method - Google Patents

Fast and batched electric energy meter start-up test method Download PDF

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Publication number
CN106054109A
CN106054109A CN201610365217.1A CN201610365217A CN106054109A CN 106054109 A CN106054109 A CN 106054109A CN 201610365217 A CN201610365217 A CN 201610365217A CN 106054109 A CN106054109 A CN 106054109A
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CN
China
Prior art keywords
electric energy
test
energy meter
tested
pulse
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CN201610365217.1A
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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
Original Assignee
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 CN201610365217.1A priority Critical patent/CN106054109A/en
Publication of CN106054109A publication Critical patent/CN106054109A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the preceding groups
    • G01R35/04Testing or calibrating of apparatus covered by the preceding groups of instruments for measuring time integral of power or current

Abstract

The present invention relates to a fast and batched electric energy meter start-up test method. Larger current is adopted to pass through a front part of energy, target energy consumption 1500J, 2100J, 2400J and 2700J is verified; the current is switched to the original current IQ=0.005Ib, and therefore, start-up test time can be decreased. According to the fast and batched electric energy meter start-up test method of the invention adopted, waiting time before a batched electric energy meter start-up test and test time are shortened, so that batched electric energy meter verification efficiency can be effectively improved. The method can be applied to verification systems of various kinds of manual and automated electric energy metering devices. With the fast and batched electric energy meter start-up test method adopted, smart energy meter verification schemes are further improved, and meter use demands of power supply units can be satisfied; and the verification level of metering verification devices can be improved.

Description

Rapid batch electric energy meter firing test method

Technical field

The invention belongs to electric energy metrical FIELD OF THE INVENTIONThe, especially a kind of rapid batch electric energy meter firing test method.

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.

Firing 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 starting test method is: under starting power, at the time T of regulationstartPulse output inside detected i.e. For qualified.Starting power is the least, therefore TstartThe longest, usually more than 10min.This experiment detects that pulse can terminate, detection T must be reached less than pulse then test periodstart.The time occurred due to first pulse of tested table has randomness, when same When one batch tested table quantity is more than 30, waiting time TwMore than 0.9TstartProbability 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, the present invention proposes rapid batch electric energy meter and starts Pilot system and method, by reducing the time of electric energy meter accuracy test, improve 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 firing test method 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 firing test method, it is characterised in that: use larger current to pass through forward part energy, Calibrating reaches target power consumption 1500J, 2100J, 2400J, 2700J respectively, then switches to primary current IQ=0.005Ib, subtracts Few firing test time.

And, when same batch tested table quantity is more than 30, the waiting time Tw probability more than 0.9Tstart reaches 0.96.

And, concretely comprise the following steps:

(1) by installing enumerator on standard scale;

(2) calculate under certain value voltage U, use larger current Im to pass through time T1, when reaching target power consumption E1, Obtain the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value;

(3), under certain value voltage U, use larger current Im by tested table and standard scale;

(4), when rolling counters forward arrives umber of pulse Ks1, under certain value voltage U, switch to test standard electric current IQ, directly Pulse is sent to tested table;

(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 firing 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 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 extensive rapid batch automatic calibration of electric energy meter method,

Ultimate principle illustrates

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 that the meter constant Ks of standard scale is actual value, and the meter constant Km of tested table is nominal value.Ks is much larger than Km.Same class Electric energy meter Km is of substantially equal for type, and 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, the Tw probability 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 Im by time T1, reach target power consumption E1;Afterwards under fixed value voltage U, switch to test standard Electric current IQ, by time T2, reaches remainder power consumption E2.And remember under fixed value voltage U, reach electric energy E value, required logical The extra pulse separation standard time is TQ.

Then there are E=E1+E2=U Im T1+U IQ T2, TP=T1+T2.

Wherein, E1 and Im is independent variable, and can obtain T1, E2 and IQ by the two value is independent variable, by the two value T2 can be obtained.And then available interpulse period.As Im > IQ, then there is TP < TQ, thus reach to reduce pulse spacing mark The target of TQ between Zhun Shi.And then by controlling IQ value, T1 < TW can be realized.

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 T2 and TP=T1+T2,

Calculate to obtain T1 ≈ 0.45 T2, ≈ 1.45*T2 < < TQ ≈ 10*T2, T1 < TW.

Owing to Ks was much smaller than much larger than Km, the then pulse spacing understanding standard scale.By installing enumerator on standard scale, Obtain the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value.By using larger current by forward part energy, work as meter When pulse approximate number Ks1 remembered by number device, switch tested table and pass through electric current, reach to count purpose.

Purpose is the reduction of batch electric energy meter starting test calibrating time, vertification regulation draw, the former starting time needs It is about 10.9min, is designated as TQ.Under 220V voltage, logical 0.005Ib (about 0.025A) detects second at the appointed time Pulse, then ammeter is qualified.The meter constant C of ammeter is 1200imp/KW h, and the electric energy consumed between i.e. two adjacent pulses is Δ E=1/1200KW h (3000J).Owing to electric current is the least, the time of second pulse appearance is longer, causes detection efficiency The highest.

The present embodiment use larger current by forward part energy, reach target power consumption (1500J, 2100J, 2400J, 2700J) after, then switch to primary current (IQ=0.005Ib), to reach the purpose of minimizing time.

According to previous verifying process flow, it would be desirable to calibrating 3000J energy, after improvement only need detection (1500J, 900J, 600J, 300J) energy, under equal-wattage, the calibrating time is greatly shortened, and without prejudice to the theoretical basis of experiment, but the most also Calibrating article need to be revised, i.e. amendment test experiments fiducial time.

Such as can make E=0.9E, E=0.1E, Im=0.1Ib.

Then can pass through E1=U Im T1, E=E1+E2=U Im T1+U IQ T2 and TP=T1+T2,

Calculate to obtain T1 ≈ 0.45*T2, Tp ≈ 1.45*T2 < < Tq ≈ 10*T2.

The time occurred due to first pulse of tested table has randomness, when same batch tested table quantity is more than 30 Time, the waiting time Tw probability more than 0.9Tstart is up to 0.96, can realize T1 < TW.

By installing enumerator on standard scale, obtain the umber of pulse about Ks1 that standard scale is exported in electric energy E1 value.Logical Cross use larger current and pass through forward part energy, when pulse approximate number Ks1 remembered by enumerator, it is achieved time timing target, switching Tested table passes through electric current IQ=0.005Ib, reaches to count purpose.Thus reach to realize reduction batch electric energy meter starting test calibrating Time Tq and the target of calibrating waiting time Tw.And then reach the purpose of reduction batch electric energy meter starting test calibrating time.

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.

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 (3)

1. a rapid batch electric energy meter firing test method, it is characterised in that: use larger current by forward part energy, divide Jian Ding not reach target power consumption 1500J, 2100J, 2400J, 2700J, then switch to primary current IQ=0.005Ib, reduce The firing test time.
Rapid batch electric energy meter firing test method the most according to claim 1, it is characterised in that: the tested table of same batch When quantity is more than 30, the waiting time Tw probability more than 0.9Tstart reaches 0.96.
Rapid batch electric energy meter firing test method the most according to claim 1, it is characterised in that: concretely comprise the following steps:
(1) by installing enumerator on standard scale;
(2) calculate under certain value voltage U, use larger current Im by time T1, when reaching target power consumption E1, obtain The umber of pulse about Ks1 that standard scale is exported in electric energy E1 value;
(3), under certain value voltage U, use larger current Im by tested table and standard scale;
(4), when rolling counters forward arrives umber of pulse Ks1, under certain value voltage U, switch to test standard electric current IQ, until quilt Inspection 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.
CN201610365217.1A 2016-05-27 2016-05-27 Fast and batched electric energy meter start-up test method CN106054109A (en)

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US6501257B1 (en) * 1995-11-30 2002-12-31 General Electric Company High speed multifunction testing and calibration of electronic electricity meters
CN102087352A (en) * 2011-01-31 2011-06-08 浙江省电力公司 Three-phase intelligent watt-hour meter inspection device and method
US20130031339A1 (en) * 2011-07-27 2013-01-31 General Electric Company Systems, methods, and apparatus for utility meter configuration
CN103630871A (en) * 2013-12-09 2014-03-12 国家电网公司 Testing device for dynamic characteristics of electronic energy meter
CN203572959U (en) * 2013-12-09 2014-04-30 国家电网公司 Electronic electric energy meter dynamic characteristic testing device
CN103926553A (en) * 2014-04-24 2014-07-16 国家电网公司 Self-service single-phase electric energy meter error calibration device and method
CN104808168A (en) * 2015-03-25 2015-07-29 广州市格宁电气有限公司 Rapid electric energy meter verification method based on segmented current technology

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501257B1 (en) * 1995-11-30 2002-12-31 General Electric Company High speed multifunction testing and calibration of electronic electricity meters
CN102087352A (en) * 2011-01-31 2011-06-08 浙江省电力公司 Three-phase intelligent watt-hour meter inspection device and method
US20130031339A1 (en) * 2011-07-27 2013-01-31 General Electric Company Systems, methods, and apparatus for utility meter configuration
CN103630871A (en) * 2013-12-09 2014-03-12 国家电网公司 Testing device for dynamic characteristics of electronic energy meter
CN203572959U (en) * 2013-12-09 2014-04-30 国家电网公司 Electronic electric energy meter dynamic characteristic testing device
CN103926553A (en) * 2014-04-24 2014-07-16 国家电网公司 Self-service single-phase electric energy meter error calibration device and method
CN104808168A (en) * 2015-03-25 2015-07-29 广州市格宁电气有限公司 Rapid electric energy meter verification method based on segmented current technology

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Application publication date: 20161026