CN103760514A - Rapid detection method and device of electric energy meter - Google Patents
Rapid detection method and device of electric energy meter Download PDFInfo
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- CN103760514A CN103760514A CN201410031305.9A CN201410031305A CN103760514A CN 103760514 A CN103760514 A CN 103760514A CN 201410031305 A CN201410031305 A CN 201410031305A CN 103760514 A CN103760514 A CN 103760514A
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Abstract
The invention discloses a rapid detection method and device of an electric energy meter. The rapid detection method of the electric energy meter comprises the steps that S1, a pulse constant extension value is determined according to a detecting point and parameters of the electric energy meter; S2, detection is carried out after a pulse constant of the electric energy meter is modified into the pulse constant extension value. After the pulse constant of the electric energy meter is modified, an electric energy number represented by each pulse is reduced, output pulses are accelerated under the condition of small signal current, the detection speed under the condition of small signal current is improved, further the detection efficiency of the entire electric energy meter is improved, and finally the production efficiency of the electric energy meter is improved. When the rapid detection device of the electric energy meter is used for detecting the electric energy meter, the electric energy number represented by each pulse is smaller, and therefore the sensitivity of the electric energy meter is detected while accuracy is detected.
Description
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.Finally need to detecting electric energy meter of electric energy meter production run: if electric energy meter error within the scope of specified standard, this electric energy meter is specification product; Otherwise this electric energy meter is unacceptable product, can not enter sales section.
Electric energy meter need to arrange multiple check points while detecting and detect respectively, and the size of current of each check point differs.If the electric energy reading error that electric energy meter records under various electric current environment all within the limits prescribed, this electric energy meter is certified products.Electric energy meter check point quantity is more, and detection need to expend the long period.Particularly hour, output electrical energy pulse is correspondingly slack-off, thereby causes lengthen detection time for check point electric current.In electric energy meter large-scale mass production process, the detection of this small-signal current has had a strong impact on detection efficiency, and then affects production efficiency.At present, under existing detection method, electric energy meter small-signal detect the time of expending account for greatly electric energy meter whole detection process consuming time more than 90 percent, therefore the speed of accelerating the detection of electric energy meter small-signal current can improve the speed of electric energy meter whole detection, and the efficiency that improves the detection of electric energy meter small-signal current can improve the efficiency of electric energy meter whole detection.
Summary of the invention
Problem to be solved by this invention is to improve the method that electric energy meter small-signal current detects, accelerate the speed that electric energy meter small-signal current detects, improve the detection efficiency of electric energy meter small-signal current, thereby improve the detection efficiency of electric energy meter entirety, and then improve electric energy meter production efficiency.
For addressing the above problem, the scheme that the present invention adopts is as follows:
According to the method for a kind of electric energy meter fast detecting of the present invention, comprise the following steps:
S1: determine meter constant expanding value according to check point and parameters of electric energy meter;
S2: revising electric energy meter meter constant is to detect after meter constant expanding value.
According to the device of a kind of electric energy meter fast detecting of the present invention, comprising:
For determine the device of meter constant expanding value according to check point and parameters of electric energy meter;
For revising the device that electric energy meter meter constant is meter constant expanding value.
According to the control device of a kind of electric energy meter fast detecting of the present invention, comprise processor, storer, ammeter interface, load control interface; Processor is connected with storer, ammeter interface, load control interface; Wherein ammeter interface is for being connected with detected electric energy meter, and load control interface is for being connected with load simulator; Described processor is used to:
By ammeter interface, read tested parameters of electric energy meter;
The electric current limiting by load control interface control load simulator;
By ammeter interface, revise the meter constant of electric energy meter;
The testing process of each check point of cycle control;
Described processor is also used to:
According to check point and parameters of electric energy meter, determine meter constant expanding value;
Revising electric energy meter meter constant is meter constant expanding value.
Further, according to the control device of electric energy meter fast detecting of the present invention, described processor is also used to:
By ammeter interface, receive the output pulse of electric energy meter;
By output step-by-step counting is judged to whether electric energy meter is qualified.
Further, according to the control device of electric energy meter fast detecting of the present invention, this device also comprises instrumentation tap; Described instrumentation tap is used for connecting measuring instrument; Described processor is also used to:
By the testing process of instrumentation tap control measuring instrument;
When revising electric energy meter meter constant to be meter constant expanding value, by the meter constant of instrumentation tap tamper detection instrument, be meter constant expanding value;
By instrumentation tap, obtain the testing result of measuring instrument.
A machine according to the present invention computer-readable recording medium, stores instruction set on this computer-readable recording medium, when this instruction set is performed, makes this machine can execute claims the method for the electric energy meter fast detecting described in 1.
Technique effect of the present invention is:
1. the present invention revises after electric energy meter meter constant, the electric energy number that each pulse represents reduces, thereby make the in the situation that of small-signal current, the impulse speed of output is accelerated, thereby accelerate the detection speed in the situation that of small-signal current, and then the detection efficiency of raising electric energy meter entirety, finally improve 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 in accuracy of detection, has also detected the sensitivity of electric energy meter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control device of electric energy meter fast detecting of the present invention.
Fig. 2 is the process flow diagram of full implementation of the present invention.
Embodiment
The present invention is below described in further details.
As everyone knows, meter constant is a very important parameter of electric energy meter.The logical conventional unit imp/kWh of meter constant represents.Common meter constant has 3200imp/kWh or 6400imp/kWh.3200imp/kWh represents that the every record 1 of electric energy meter is spent in electricity and sends 3200 pulses, and each pulse represents 0.0003125 degree electricity.6400imp/kWh represents that the every record 1 of electric energy meter is spent in electricity and sends 6400 pulses, and each pulse represents 0.00015625 degree electricity.
The detection of the electric energy meter take specified meter constant as 3200imp/kWh is example.This electric energy meter rated current is 36.364A, and maximum load power is 8kW; Minimum starting power is 0.5W, and starting current is 2mA.This electric energy meter detects need to be by the detection test of ten check points, and the detection electric current of ten check points is respectively: 2mA, 11mA, 36mA, 91mA, 227mA, 545mA, 1.364A, 4.545A, 13.636A, 36.364A.Detection voltage is 220V, and the load power of ten check point detections is respectively 0.5W, 2.5W, 8W, 20W, 50W, 120W, 300W, 1kW, 3kW, 8kW.Unsteady computing method during detection, each check point at least needs 1 pulse data just can complete detection, and during check point load power 8kW because impulse speed is fast, adopt 8 pulse datas to detect, the check point of 3kW load power adopts 4 pulse datas to detect, and each check point detects twice.Under existing detection method, when detection load power is 8kW, only needs 2s can obtain 8 pulse datas and complete detection; When detection load power is 3kW, needs 2s can obtain 4 pulse datas and complete detection; When detection load power is 50W, needs 23s could obtain 1 pulse data and complete detection.Calculate by that analogy, the detection of 2.5W needs 7.5min just can obtain 1 pulse data to complete detection, and the detection of 0.5W needs 38min could obtain 1 pulse data to complete detection.Because each point need to detect twice, therefore, under existing detection method, each electric energy meter whole detection approximately need to expend the time of 90min.
Under method of the present invention, detection method is as follows:
First, according to check point and parameters of electric energy meter, determine meter constant expanding value.Here, parameters of electric energy meter comprises precision, meter constant, rated current, starting current of electric energy meter etc.
Detection take aforesaid specified meter constant as the electric energy meter of 3200imp/kWh is as example, and the electric current of check point is respectively: 2mA, 11mA, 36mA, 91mA, 227mA, 545mA, 1.364A, 4.545A, 13.636A, 36.364A, the load power that check point detects is respectively 0.5W, 2.5W, 8W, 20W, 50W, 120W, 300W, 1kW, 3kW, 8kW.Wherein load power is respectively 0.5W, 2.5W, and 8W, 20W, the detection of five check points of 50W belongs to the detection of small-signal current, and these five check points are also referred to as small-signal check point.While supposing that each small-signal check point detects, each pulse 3s, produces an output pulse according to every 3s and sets meter constant expanding value.Meter constant expanding value can be calculated and be obtained by following formula:
The load power of meter constant expanding value=1200 × 1000 ÷ check point, this formula also can be expressed as:
The load power of meter constant expanding value=(time interval of the each pulse of 3600 ÷) × 1000 ÷ check points.
According to above-mentioned formula, the meter constant expanding value of above-mentioned five small-signal check points is respectively: 2400000,480000,150000,60000,10000.
Then, when small-signal check point detects, revising electric energy meter meter constant is meter constant expanding value.After this operation, the actual pulse constant of electric energy meter is extended, and the electric energy number that each pulse represents reduces.Therefore under the situation of small-signal current, within the less time period, also can produce output pulse.With the meter constant expanding value 2400000 of aforementioned five small-signal check points, 480000,150000,60000,10000 is example, when detecting, the average every 3s of qualified electric energy meter produces an output pulse, under the method for calculating of floating, detect, only need 3s can complete detection, twice detection also only needs 6s.Add and detect each time the stabilization time that needs the 10s time, each check point at most only needs the 20s time can complete detection.The detection of electric energy meter entirety only needs 3min.Than the time that needs to detect 90min under existing method, the present invention has improved the efficiency detecting greatly.
It should be noted that:
1,, in above-mentioned embodiment, according to every 3s, meter constant expanding value is set in a raw output pulse.It will be appreciated by those skilled in the art that the method can make suitable adjustment, such as produce an output pulse according to every 1s, set meter constant.
2,, in above-mentioned embodiment, 1 output pulse of method test of calculating by floating detects.It will be appreciated by those skilled in the art that electric energy meter has different accuracy standards, such as 0.5,1.0,2.0.At electrical energy meter accuracy, be 0.5 o'clock, electrical energy meter accuracy requires the high output umber of pulse that can suitably improve test.
3, in above-mentioned embodiment, while detecting electric energy meter, the electric energy number that each output pulse represents is less, and such as electric energy meter meter constant is made as at 240000 o'clock, the electric energy that each pulse represents is 4.2 × 10
-6degree, 4.2 × 10
-6the electric energy of degree can detect, and therefore in theory, this electric energy meter has very high sensitivity.If electric energy meter meter constant maximum is restricted, such as electric energy meter meter constant maximal value is 60000, in actual test, cannot reach 240000, it will be appreciated by those skilled in the art that now test can be using electric energy meter meter constant maximal value the meter constant expanding value when this small-signal detects.
4, the present invention accelerates detection speed by the meter constant of revising electric energy meter, and the value that concrete meter constant is revised, it will be appreciated by those skilled in the art that and can make further modification according to above-mentioned embodiment.
5, in general detected after because the meter constant of electric energy meter has been modified, need to recover electric energy meter meter constant is ratings, due in reality test, can first test small-signal check point, other check points need to detect under specified electric energy meter meter constant, therefore, in this process, gather, the meter constant of electric energy meter is restored naturally.In addition, some pulse electric energy meters have the function of recovering electric energy meter meter constant after power-off restarting, therefore need not recover especially the step of constant of electric energy meter.
Above-mentioned implementation process of the present invention can realize by the mode of manual operation control, also can automatically control realization by computer program.As shown in Figure 1, a kind of control device of electric energy meter fast detecting, comprises processor, storer, ammeter interface, load control interface.Processor is connected with storer, ammeter interface, load control interface.Wherein ammeter interface is for being connected with detected electric energy meter, and load control interface is for being connected with load simulator.During detection, load simulator is connected by electric wire with electric energy meter, and load simulator is for simulating the load under the different situations of electric energy meter practical application by current limit.Processor is used to:
1, by ammeter interface, read the parameter of tested electric energy meter;
2, the electric current limiting by load control interface control load simulator;
3, by ammeter interface, revise the meter constant of electric energy meter;
4, by ammeter interface, receive the output pulse of electric energy meter;
5, according to the setting parameter check point of electric energy meter;
6, the testing process of each check point of cycle control, in testing process, processor is also used to:
6.1 determine meter constant expanding value according to check point and parameters of electric energy meter;
6.2 meter constants of revising electric energy meter are to detect after corresponding meter constant expanding value;
6.3 by judging that to output step-by-step counting whether electric energy meter is qualified.
Automatically the complete testing process of controlling by computer program can be with reference to figure 2.
It should be noted that, in actual application, the output pulse of electric energy meter can also output in measuring instrument, then by measuring instrument, is completed counting and is analyzed.Under this embodiment, the control device of above-mentioned electric energy meter fast detecting also comprises instrumentation tap, and instrumentation tap is used for connecting measuring instrument.Processor is used to:
By the testing process of instrumentation tap control measuring instrument;
When revising electric energy meter meter constant, the meter constant of tamper detection instrument is meter constant expanding value;
By instrumentation tap, obtain the testing result of measuring instrument.
Under this embodiment, those skilled in the art understand, because the judgement whether electric energy meter is qualified is determined by measuring instrument, processor does not need to carry out aforesaid two steps: by ammeter interface, receive the output pulse of electric energy meter, and by output step-by-step counting is judged to whether electric energy meter qualified.Under this embodiment, the control device of aforesaid electric energy meter fast detecting is mainly for detection of flow process control.Certainly, the part of testing process control also can directly accomplish to make this measuring instrument be the control device of aforesaid electric energy meter fast detecting in measuring instrument.
Aforesaid, by computer program, automatically control under implementation, each step of the method for electric energy meter fast detecting of the present invention is realized by timer (or module).Therefore the method for electric energy meter fast detecting of the present invention can be realized by device (or module): a kind of device (or module) of electric energy meter fast detecting comprises: for determine the device (or module) of meter constant expanding value according to check point and parameters of electric energy meter; 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 apparatuss, above-mentioned concrete enforcement can also be made suitable adjustment.
Claims (6)
1. a method for electric energy meter fast detecting, is characterized in that, comprises the following steps:
S1: determine meter constant expanding value according to check point and parameters of electric energy meter;
S2: revising electric energy meter meter constant is to detect after meter constant expanding value.
2. a device for electric energy meter fast detecting, is characterized in that, comprises with lower device:
For determine the device of meter constant expanding value according to check point and parameters of electric energy meter;
For revising the device that electric energy meter meter constant is meter constant expanding value.
3. a control device for electric energy meter fast detecting, comprises processor, storer, ammeter interface, load control interface; Processor is connected with storer, ammeter interface, load control interface; Wherein ammeter interface is for being connected with detected electric energy meter, and load control interface is for being connected with load simulator; Described processor is used to:
By ammeter interface, read tested parameters of electric energy meter;
The electric current limiting by load control interface control load simulator;
By ammeter interface, revise the meter constant of electric energy meter;
The testing process of each check point of cycle control;
It is characterized in that, described processor is also used to:
According to check point and parameters of electric energy meter, determine meter constant expanding value;
Revising electric energy meter meter constant is meter constant expanding value.
4. the control device of electric energy meter fast detecting as claimed in claim 3, is characterized in that, described processor is also used to:
By ammeter interface, receive the output pulse of electric energy meter;
By output step-by-step counting is judged to whether electric energy meter is qualified.
5. the control device of electric energy meter fast detecting as claimed in claim 3, is characterized in that, this device also comprises instrumentation tap; Described instrumentation tap is used for connecting measuring instrument; Described processor is also used to:
By the testing process of instrumentation tap control measuring instrument;
When revising electric energy meter meter constant to be meter constant expanding value, by the meter constant of instrumentation tap tamper detection instrument, be meter constant expanding value;
By instrumentation tap, obtain the testing result of measuring instrument.
6. a machine readable media, is characterized in that, on this computer-readable recording medium, stores instruction set, when this instruction set is performed, makes this machine can execute claims the method for the electric energy meter fast detecting described in 1.
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Cited By (4)
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| CN105785309A (en) * | 2015-03-26 | 2016-07-20 | 上海斯同瑞电气科技有限公司 | Apparatus for setting electric energy meter pulse width and setting method thereof |
| 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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