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CN103760514B - The method and device that a kind of electric energy meter quickly detects - Google Patents

The method and device that a kind of electric energy meter quickly detects Download PDF

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Publication number
CN103760514B
CN103760514B CN201410031305.9A CN201410031305A CN103760514B CN 103760514 B CN103760514 B CN 103760514B CN 201410031305 A CN201410031305 A CN 201410031305A CN 103760514 B CN103760514 B CN 103760514B
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electric energy
energy meter
meter
detection
interface
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CN103760514A (en
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焦伟鸣
夏国平
周学美
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NANJING TIANSU AUTOMATION CONTROL SYSTEM CO Ltd
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NANJING TIANSU AUTOMATION CONTROL SYSTEM CO Ltd
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Abstract

The invention discloses the method and device that a kind of electric energy meter quickly detects.The method comprises the following steps: S1: determine meter constant expanding value according to test point and parameters of electric energy meter;S2: amendment electric energy meter meter constant is detection after meter constant expanding value.After the present invention revises electric energy meter meter constant, the electric energy number that each pulse represents reduces, so that in the case of small-signal current, the impulse speed of output is accelerated, thus accelerate the detection speed in the case of small-signal current, and then improve the detection efficiency that electric energy meter is overall, final raising electric energy meter production efficiency.When the present invention detects electric energy meter, the electric energy number that each output pulse represents is less, therefore also have detected the sensitivity of electric energy meter while accuracy of detection.

Description

The method and device that a kind of electric energy meter quickly detects
Technical field
The present invention relates to the detection of electric energy meter.
Background technology
Electric energy meter, as electric power meter, is widely used in the various aspects of national economy.Electric energy meter production process Finally need electric energy meter is detected: if electric energy meter error is in the critical field of regulation, then this electric energy meter is qualified products;No Then this electric energy meter is defective work, it is impossible to enter sales section.
Needing to arrange multiple test point during electric energy meter detection to detect respectively, the size of current of each test point differs.As The most within the limits prescribed, then this electric energy meter is the electric energy error in reading that really electric energy meter records under various different electric current environment Certified products.Electric energy meter test point quantity is more, and detection needs consume a longer time.When particularly test point electric current is less, output Electrical energy pulse is the most slack-off, thus causes the detection time to lengthen.During electric energy meter large-scale mass production, this little letter The detection of number electric current has had a strong impact on detection efficiency, and then affects production efficiency.At present, under existing detection method, electric energy meter The time that small-signal detection expends constitutes about more than 90 percent that electric energy meter whole detection process is time-consuming, therefore accelerates electric energy The speed of table small-signal current detection can improve the speed of electric energy meter whole detection, improves the detection of electric energy meter small-signal current Efficiency can improve the efficiency of electric energy meter whole detection.
Summary of the invention
Problem to be solved by this invention is the method improving the detection of electric energy meter small-signal current, accelerates electric energy meter small-signal The speed of current detecting, improves the detection efficiency of electric energy meter small-signal current, thus improves the detection efficiency that electric energy meter is overall, enter And improve electric energy meter production efficiency.
For solving the problems referred to above, the scheme that the present invention uses is as follows:
The method that a kind of electric energy meter according to the present invention quickly detects, comprises the following steps:
S1: determine meter constant expanding value according to test point and parameters of electric energy meter;
S2: amendment electric energy meter meter constant is detection after meter constant expanding value.
The device that a kind of electric energy meter according to the present invention quickly detects, including:
For determining the device of meter constant expanding value according to test point and parameters of electric energy meter;
For revising the device that electric energy meter meter constant is meter constant expanding value.
The control device that a kind of electric energy meter according to the present invention quickly detects, including processor, memorizer, ammeter interface, Load controls interface;Processor controls interface with memorizer, ammeter interface, load and is connected;Wherein ammeter interface is for tested The electric energy meter surveyed is connected, and load controls interface for being connected with load simulator;Described processor is used for:
Tested parameters of electric energy meter is read by ammeter interface;
The electric current that Interface Controller load simulator limits is controlled by load;
Meter constant by ammeter interface amendment electric energy meter;
The detection process of each test point of loop control;
Described processor is also used for:
Meter constant expanding value is determined according to test point and parameters of electric energy meter;
Amendment electric energy meter meter constant is meter constant expanding value.
Further, the control device quickly detected according to the electric energy meter of the present invention, described processor is also used for:
Output pulse by ammeter interface electric energy meter;
By output step-by-step counting is judged that electric energy meter is the most qualified.
Further, the control device quickly detected according to the electric energy meter of the present invention, this device also includes instrumentation tap;Described Instrumentation tap is used for connecting instrumentation;Described processor is also used for:
The detection process of instrumentation is controlled by instrumentation tap;
Instrumentation is revised by instrumentation tap while amendment electric energy meter meter constant is meter constant expanding value Meter constant is meter constant expanding value;
The testing result of instrumentation is obtained by instrumentation tap.
A machine according to the present invention computer-readable recording medium, on this computer-readable recording medium, storage has instruction set, when this instruction set When being performed so that this machine can perform the method that the electric energy meter described in claim 1 quickly detects.
The technique effect of the present invention is:
1., after the present invention revises electric energy meter meter constant, the electric energy number that each pulse represents reduces, so that at little letter In the case of number electric current, the impulse speed of output is accelerated, thus accelerates the detection speed in the case of small-signal current, and then Improve the detection efficiency that electric energy meter is overall, final raising electric energy meter production efficiency.
2. when the present invention detects electric energy meter, the electric energy number that each output pulse represents is less, therefore same in accuracy of detection Time also have detected the sensitivity of electric energy meter.
Accompanying drawing explanation
Fig. 1 is the structural representation controlling device that electric energy meter of the present invention quickly detects.
Fig. 2 is the flow chart of full implementation of the present invention.
Detailed description of the invention
The present invention is described in further details below.
It is known that meter constant is a very important parameter of electric energy meter.Meter constant leads to conventional unit imp/ KWh represents.Common meter constant has 3200imp/kWh or 6400imp/kWh.3200imp/kWh represents that electric energy meter often records 1 Sending 3200 pulses in degree electricity, each pulse represents 0.0003125 degree of electricity.6400imp/kWh represents that electric energy meter often records 1 degree Sending 6400 pulses in electricity, each pulse represents 0.00015625 degree of electricity.
As a example by the detection of the specified meter constant electric energy meter as 3200imp/kWh.This electric energy meter rated current is 36.364A, i.e. maximum load power are 8kW;Minimum start power be 0.5W, i.e. starting current be 2mA.The detection of this electric energy meter needs Will be tested by the detection of ten test points, the detection electric current of ten test points is respectively as follows: 2mA, 11mA, 36mA, 91mA, 227mA, 545mA, 1.364A, 4.545A, 13.636A, 36.364A.Detection voltage is 220V, then ten test point detections is negative Lotus power is respectively 0.5W, 2.5W, 8W, 20W, 50W, 120W, 300W, 1kW, 3kW, 8kW.Floating computational methods during detection, often Individual test point at least needs 1 pulse data just can complete detection, and fast due to impulse speed during test point load power 8kW, Using 8 pulse datas to detect, the test point of 3kW load power uses 4 pulse datas to detect, each test point Detect twice.Under existing detection method, when detection load power is 8kW, it is only necessary to it is complete that 2s can obtain 8 pulse datas Become detection;When detection load power is 3kW, needs 2s can obtain 4 pulse datas and complete detection;When detection load power During for 50W, need 23s could obtain 1 pulse data and complete detection.Calculating by that analogy, the detection of 2.5W needs 7.5min Just can obtain 1 pulse data complete detection, the detection of 0.5W need 38min could obtain 1 pulse data complete detect.By Needing to detect twice in each point, therefore, under existing detection method, each electric energy meter whole detection takes around consuming The time of 90min.
Under the method for the present invention, detection method is as follows:
First, meter constant expanding value is determined according to test point and parameters of electric energy meter.Here, parameters of electric energy meter includes electric energy The precision of table, meter constant, rated current, starting current etc..
As a example by the detection of the aforesaid nominal pulse constant electric energy meter as 3200imp/kWh, the electric current of test point is respectively For: 2mA, 11mA, 36mA, 91mA, 227mA, 545mA, 1.364A, 4.545A, 13.636A, 36.364A, test point detection Load power is respectively 0.5W, 2.5W, 8W, 20W, 50W, 120W, 300W, 1kW, 3kW, 8kW.Wherein load power is respectively The detection of five test points of 0.5W, 2.5W, 8W, 20W, 50W belongs to the detection of small-signal current, and these five test points are also referred to as For small-signal test point.Assume when each small-signal test point detects, each pulse 3s, i.e. produce an output pulse according to every 3s Set meter constant expanding value.Then meter constant expanding value can be calculated by below equation and obtain:
The load power of meter constant expanding value=1200 × 1000 ÷ test point, this formula can also be expressed as:
The load power of meter constant expanding value=(time intervals of the 3600 each pulses of ÷) × 1000 ÷ test points.
According to above-mentioned formula, the meter constant expanding value of above-mentioned five small-signal test points is respectively as follows: 2400000, 480000,150000,60000,10000.
Then, during the detection of small-signal test point, amendment electric energy meter meter constant is meter constant expanding value.Through this behaviour After work, the actual pulse constant of electric energy meter is extended, and the electric energy number that each pulse represents reduces.Therefore in the feelings of small-signal current Under shape, within the less time period, also can produce output pulse.Meter constant expanding value with aforementioned five small-signal test points As a example by 2400000,480000,150000,60000,10000, when detection, the averagely every 3s of qualified electric energy meter produces an output Pulse, detects, it is only necessary to 3s can complete detection, and twice detection also has only to 6s under the method calculated of floating.Add every One-time detection needs the stabilization time of 10s time, each test point and at most has only to the 20s time can complete detection.Electric energy meter Overall detection has only to 3min.Compared to needing to detect the time of 90min under existing method, the present invention substantially increases inspection The efficiency surveyed.
It should be understood that
1, in above-mentioned embodiment, according to the raw output pulse settings meter constant expanding value of every 3s.People in the art Member understands, the method may be made that suitably adjustment, such as produces an output pulse settings meter constant according to every 1s.
2, in above-mentioned embodiment, the method calculated by floating is tested 1 output pulse and is detected.Art technology Personnel understand, electric energy meter has different accuracy standards, such as 0.5,1.0,2.0.When electrical energy meter accuracy is 0.5, electric energy meter essence Degree requires that height can properly increase the output umber of pulse of test.
3, in above-mentioned embodiment, during detection electric energy meter, the electric energy number that each output pulse represents is less, such as electric energy meter When meter constant is set to 240000, the electric energy that each pulse represents is 4.2 × 10-6Degree, 4.2 × 10-6The electric energy of degree can detect Going out, the most in theory, this electric energy meter has the highest sensitivity.If electric energy meter meter constant maximum is restricted, such as electric energy Table meter constant maximum is 60000, then be unable to reach 240000 in actual test, it will be appreciated by those skilled in the art that and now survey Examination can using electric energy meter meter constant maximum as this small-signal detect time meter constant expanding value.
4, the present invention accelerates to detect speed by the meter constant of amendment electric energy meter, the value that concrete meter constant is revised, this Skilled person understands, can make further modification according to above-mentioned embodiment.
5, after in general having detected, the meter constant due to electric energy meter is modified, and needs to recover electric energy meter pulse normal Number is rated value, in testing in reality, can first test small-signal test point, and other test points need at specified electric energy Detecting under table meter constant, therefore, collect in this process, the meter constant of electric energy meter is inherently derived recovery.Additionally, some arteries and veins Rush the function recovering electric energy meter meter constant after electric energy meter has power-off restarting, therefore without particularly to recover constant of electric energy meter Step.
The above-mentioned implementation process of the present invention can realize by the way of manual operation controls, it is also possible to by computer journey Sequence automatically controls realization.As it is shown in figure 1, the control device that a kind of electric energy meter quickly detects, including processor, memorizer, ammeter Interface, load control interface.Processor controls interface with memorizer, ammeter interface, load and is connected.Wherein ammeter interface for Detected electric energy meter is connected, and load controls interface for being connected with load simulator.During detection, load simulator and electric energy meter Being connected by electric wire, load simulator is for by bearing under the different situations in the current limit actual application of simulation electric energy meter Carry.Processor is used for:
1, the parameter of tested electric energy meter is read by ammeter interface;
2, control, by load, the electric current that Interface Controller load simulator limits;
3, by the meter constant of ammeter interface amendment electric energy meter;
4, by the output pulse of ammeter interface electric energy meter;
5, test point is set according to the parameter of electric energy meter;
6, the detection process of each test point of loop control, during detection, processor is also used for:
6.1 determine meter constant expanding value according to test point and parameters of electric energy meter;
The meter constants of 6.2 amendment electric energy meters are to detect after corresponding meter constant expanding value;
To output step-by-step counting, 6.3 by judging that electric energy meter is the most qualified.
The complete detection process automatically controlled by computer program is referred to Fig. 2.
It should be noted that in the application of reality, the output pulse of electric energy meter can also export in instrumentation, then Completed counting by instrumentation and analyze.Under this embodiment, the control device that above-mentioned electric energy meter quickly detects also wraps Including instrumentation tap, instrumentation tap is used for connecting instrumentation.Processor is used for:
The detection process of instrumentation is controlled by instrumentation tap;
The meter constant revising instrumentation while amendment electric energy meter meter constant is meter constant expanding value;
The testing result of instrumentation is obtained by instrumentation tap.
Under this embodiment, it will be appreciated by those skilled in the art that owing to the most qualified judgement of electric energy meter is by detector Table determines, processor need not perform aforesaid two steps: by the output pulse of ammeter interface electric energy meter, Yi Jitong Cross and output step-by-step counting is judged that electric energy meter is the most qualified.Under this embodiment, the control that aforesaid electric energy meter quickly detects Device processed is mainly for detection of Row control.Certainly, the part that testing process controls can also directly accomplish to make in instrumentation Obtain this instrumentation and be the control device that aforesaid electric energy meter quickly detects.
Automatically control under implementation aforesaid by computer program, the method that the electric energy meter of the present invention quickly detects Each step by program installation (or module) realize.Therefore the method that the electric energy meter of the present invention quickly detects can be by device (or module) realizes: the device (or module) that a kind of electric energy meter quickly detects including: for according to test point and parameters of electric energy meter Determine the device (or module) of meter constant expanding value;For revising the device that electric energy meter meter constant is meter constant expanding value (or module).
It will be appreciated by those skilled in the art that under different detection control apparatus, above-mentioned be embodied as making suitable When adjustment.

Claims (1)

1. the control device that electric energy meter quickly detects, controls interface, instrument including processor, memorizer, ammeter interface, load Table interface;Processor controls interface with memorizer, ammeter interface, load and is connected;Wherein ammeter interface is used for and detected electricity Can be connected by table, load controls interface for being connected with load simulator;Described processor is used for:
Tested parameters of electric energy meter is read by ammeter interface;
The electric current that Interface Controller load simulator limits is controlled by load;
Meter constant by ammeter interface amendment electric energy meter;
Output pulse by ammeter interface electric energy meter;
By output step-by-step counting is judged that electric energy meter is the most qualified;
The detection process of each test point of loop control;
It is characterized in that, described processor is also used for:
Meter constant expanding value is determined according to test point and parameters of electric energy meter;
During the detection of small-signal test point, amendment electric energy meter meter constant is meter constant expanding value;
Described according to test point and parameters of electric energy meter determine meter constant expanding value use equation below:
The load power of meter constant expanding value=(time intervals of the 3600 each pulses of ÷) × 1000 ÷ test points.
CN201410031305.9A 2014-01-23 2014-01-23 The method and device that a kind of electric energy meter quickly detects Active CN103760514B (en)

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CN105785309B (en) * 2015-03-26 2019-01-15 上海斯同瑞电气科技有限公司 A kind of device and its setting method for realizing electric energy meter pulse width set
CN104698428A (en) * 2015-04-08 2015-06-10 南京天溯自动化控制系统有限公司 Multi-electric-energy-meter automated testing method
CN107015188A (en) * 2017-05-23 2017-08-04 国网山东省电力公司电力科学研究院 A kind of method and measurement, verification system for shortening the harmonic electric energy error measure time
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Address after: 210012 3 of Tian Shu Science Park, 170-1 software Avenue, Yuhuatai District, Nanjing, Jiangsu.

Patentee after: NANJING TIANSU AUTOMATION CONTROL SYSTEM Co.,Ltd.

Address before: The Olympic Avenue in Jianye District of Nanjing city of Jiangsu Province, No. 69 210019

Patentee before: NANJING TIANSU AUTOMATION CONTROL SYSTEM Co.,Ltd.