CN106054113A - Metering stability testing system for electric energy meter and testing method thereof - Google Patents
Metering stability testing system for electric energy meter and testing method thereof Download PDFInfo
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- CN106054113A CN106054113A CN201610601160.0A CN201610601160A CN106054113A CN 106054113 A CN106054113 A CN 106054113A CN 201610601160 A CN201610601160 A CN 201610601160A CN 106054113 A CN106054113 A CN 106054113A
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 238000012430 stability testing Methods 0.000 title abstract 2
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000011002 quantification Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 8
- 238000010998 test method Methods 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 4
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 238000013112 stability test Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009781 safety test method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a metering stability testing system for electric energy meter and testing method thereof, including a power supply unit interface configured with a power supply interface and a voltage regulator in connection with the power supply interface through a circuit breaker and an electric energy meter support configured with a meter to be tested. The meter support is provided with a communication interface connected with the to-be-tested electric energy meter, an output interface connected with the communication interface, and a sliding groove cooperating with the bottom of the to-be-tested electric energy meter as well as a rotation clamped metering acquisition unit that has the to-be-tested electric energy meter fixedly arranged in the sliding groove. The meter support is also configured with an industrial control computer and an error instrument connected with industrial control computer. The error instrument can be connected with the output end of all types of standard electric energy meters and is interfaced to the output end of the electric energy meters. The industrial control machine controls the metering calibration unit and the loading unit of the voltage regulator simultaneously.
Description
Technical field
The present invention relates to a kind of quantification stability for electric energy meter and test system and method for testing thereof.
Background technology
Ammeter before being taken into use, needs that the quantification stability of ammeter is carried out test and considers.Existing method of testing is
Fictitious power steady load is used to carry out the calibrating of electric energy metrical precision at laboratory before dispatching from the factory.
But in actually used, electric energy meter is arranged on scene, circumstance complication, need to carry capacitive load, inductive load etc.
Multiple load, runs on the multiple running status such as light running, heavy service, and along with load and the change of running status,
The error in dipping of electric energy meter also can change.
Existing method of testing cannot simulate the various situations of on-the-spot actual motion, therefore cannot test out tested electric energy
Table use at the scene during quantification stability.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that a kind of quantification stability for electric energy meter tests system and survey thereof
Method for testing, the present invention has the pressure regulator that can be adjusted in real time and scalable load by industrial PC, and when test
Can also be automatically switched testing scheme by industrial PC, it is possible to simulate the various situations of on-the-spot actual motion, test effect
Good, test result has reference value.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of quantification stability for electric energy meter tests system, including power subsystem, metering collecting unit, measurement verification
Unit and load unit, wherein:
Described power subsystem, is configured with power interface and the pressure regulator being connected by chopper with power interface；
Described metering collecting unit, is configured with the table torr installing tested electric energy meter, and described table torr has the tested electric energy of connection
The communication interface of table and the output interface being connected with communication interface and with the chute matched bottom tested electric energy meter and use
In the rotary buckle that tested electric energy meter is fixed in chute；
Described measurement verification unit, is configured with industrial computer and the error instrument being connected with industrial computer, and described error instrument connects
Having the outfan of all types of standard electric energy meter and the table torr output interface of tested electric energy meter, described industrial computer controls to adjust simultaneously
Depressor；
Described load unit, is provided with the scalable load being controlled by industrial computer.
Described load unit is additionally provided with and loads, with scalable, the PLC being connected, and described PLC connects to be had
Touch control device, described touch control device is simultaneously connected with industrial computer.
The outfan of described pressure regulator passes sequentially through tested electric energy meter and is connected with scalable load with standard electric energy meter.
The outfan of described pressure regulator passes sequentially through standard electric energy meter and is connected with scalable load with tested electric energy meter.
Described table torr includes phase mutual inductance type table torr, single-phase meter torr and/or three-phase direct table torr, and corresponding installation three is mutual
Sense formula electric energy meter, single-phase electric energy meter and/or three-phase direct electric energy meter.
The outfan of described pressure regulator connects the voltmeter head for showing pressure regulator output voltage amplitude.
A kind of quantification stability method of testing for electric energy meter, comprises the following steps:
(1) some groups of testing schemes are determined according to the actually used operating mode of tested electric energy meter；
(2) adjust test system, progressively adjust the output voltage extremely test required voltage value of pressure regulator, then adjust scalable
It is loaded to test required load, needs the range of switching standards electric energy meter, and the theoretical arteries and veins of pre-set criteria electric energy meter according to test
Strokes per minute and the number of turns；
(3) according to the output voltage needing adjustment pressure regulator in real time and scalable load, the Real-time Collection quilt of testing scheme
Survey electric energy meter and the variable of standard electric energy meter, and ask difference to obtain the error in dipping value of tested electric energy meter；
(4) first the range of standard electric energy meter is switched to maximum range, then according to another testing scheme need adjust
The output voltage of whole pressure regulator and scalable load, further according to range the preset mark of another testing scheme switching standards electric energy meter
The theoretical umber of pulse of quasi-electric energy meter and the number of turns；
(5) step (3)-(4) are repeated, until completing the test job of all testing schemes.
In described step (2), first confirm that the power supply of power subsystem and chopper are off-state and load unit
Scalable load for off-state, then switch on power by power interface, close circuit breaker, start scalable load to connect
Enter scalable load.
In described step (2), adjust the adjustment mode of pressure regulator output voltage be directly adjust manually or
It is to pressure regulator Indirect method by industrial computer, by selecting switch to select adjustment mode before adjusting.
In described step (5), it is completed backed off after random test mode, first adjusts scalable and be loaded to zero load, then adjust
The output voltage of whole pressure regulator, to 0V, is then shut off scalable load and loads to disconnect scalable, and cut-off breaker finally disconnects
Power subsystem power supply.
The invention have the benefit that
The present invention has the pressure regulator that can be adjusted in real time and scalable load by industrial computer, and goes back when test
Can be automatically switched testing scheme by industrial computer, it is possible to simulate the various situations of on-the-spot actual motion, good test effect, survey
Test result has reference value；
(2) present invention is capable of Self-pressurizing agri, loading and calculating error, and artificial participation amount is low, has certainty of measurement
High, simple to operate, applied widely and that efficiency is high advantage；
(3) table torr has and the chute matched bottom tested electric energy meter and for tested electric energy meter is fixed on chute
In rotary buckle, it is possible to realize the fast assembling-disassembling of tested electric energy meter, save the time dismounting tested electric energy meter, carry further
High testing efficiency.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the present invention.
Detailed description of the invention:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1, quantification stability system safety testing device, including power subsystem, measure collecting unit, measurement verification unit and bear
Carrier unit；
Described power subsystem has power interface and the pressure regulator being connected by chopper with power interface；Described tune
Depressor have for selecting pressure regulator to be manual mode or automatic mode selection switch, described pressure regulator also have outfan and
Controlling end, the control end of described pressure regulator is connected with industrial computer；By selecting switch to select adjustment mode, operator before adjusting
Pressure regulator can be directly adjusted by member manually, it is also possible to by industrial computer to pressure regulator Indirect method；Described
The outfan of pressure regulator connects the voltmeter head for showing pressure regulator output voltage amplitude；
Being provided with tested electric energy meter in described metering collecting unit, described metering collecting unit also has for installing tested
The table torr of electric energy meter: described tested electric energy meter includes 1,3 pieces of three-phase direct electric energy meters 2 of 3 pieces of single-phase electric energy meters and 3 pieces of three-phases
Mutual inductance type electric energy meter 3, described table torr include for install 3 pieces of single-phase electric energy meters 1 single-phase meter torr 4, for install 3 pieces of three-phases straight
Connect the three-phase direct table torr 5 of formula electric energy meter 2 and for installing the phase mutual inductance type table torr of 3 pieces of phase mutual inductance type electric energy meters 3
6；Described phase mutual inductance type table torr 6 is often respectively provided with no-load voltage ratio is 220/57.7 and accuracy class is 0.02 grade PT mutually and no-load voltage ratio is
100/5 and CT that accuracy class is 0.02 grade；Device can be controlled by host computer simultaneously, is appointed by the input of operation interface
Meaning voltage and current, is adjusted controlling.
Each table torr has the communication interface connecting tested electric energy meter and the output interface being connected with communication interface；Each described
Table torr also has and the chute matched bottom each tested electric energy meter and for the rotation being fixed in chute by tested electric energy meter
Turn buckle to realize the fast assembling-disassembling of tested electric energy meter；
Being provided with standard electric energy meter in described measurement verification unit, described standard electric energy meter includes 1 piece of single-phase standard scale and 1
Block three-phase standard scale；Described measurement verification unit also has industrial computer and the error instrument being connected with industrial computer；Described error
Instrument is connected respectively with the outfan of each standard electric energy meter；
Described load unit has scalable load and loads, with scalable, the touch control being connected by PLC
Device processed；Described touch control device is also connected with industrial computer；When adjusting scalable load, touch control device can be passed through
Directly adjust, it is also possible to by industrial computer, scalable load is adjusted the most automatically；
Such as Fig. 1, the first piece of phase mutual inductance type electric energy meter 3 in phase mutual inductance type table torr 6 in metering collecting unit is carried out
Test；Before testing, the outfan of pressure regulator is passed sequentially through phase mutual inductance type electric energy meter 3 to be measured and three-phase standard scale with
Scalable load is connected, and is connected by the output interface of error instrument with phase mutual inductance type table torr 6.
The outfan of described pressure regulator is also associated with the voltmeter head for showing pressure regulator output voltage amplitude.
Method of testing comprises the steps:
(A) testing scheme is formulated: determine some groups of testing schemes according to the actually used operating mode of tested electric energy meter；This enforcement
Example lists 3 groups of typical testing schemes:
In testing scheme one, scalable load set is the resistive load for simulating electric filament lamp；
In testing scheme two, scalable load set is for simulating the RL type of air-conditioning, the load of pf=0.8, and wants
Seek the current spike when test starts with starting of air conditioner moment, be gradually lowered at spike after current；
In testing scheme three, scalable load set is for simulating the load of the L-type of electric drill, and requires to start in test
Time have electric drill start moment current spike, slowly decline at spike after current, then simulation people operate during electric drill handshaking
The rotating speed caused is too fast, electric current rises；
(B) test mode is entered: first confirm that the power supply of power subsystem and chopper are off-state and load list
The scalable load of unit for off-state, then switches on power by power interface, close circuit breaker, start scalable load with
Access scalable load, adjust pressure regulator output voltage to test required voltage value, then adjust scalable be loaded to test institute
Need load；Need to switch the range of three-phase standard scale, and the theoretical umber of pulse of preset three-phase standard scale and the number of turns according to test；
(C) test inspection table: according to the output voltage needing adjustment pressure regulator in real time and the scalable load of testing scheme, by mistake
Differ from the tested phase mutual inductance type electric energy meter 3 of instrument Real-time Collection and the variable of three-phase standard scale, and ask difference to obtain tested three-phase
The error in dipping value of mutual inductance type electric energy meter 3, is then transferred to industrial computer by error in dipping；
(D) switch test scheme as required: first the range of three-phase standard scale is switched to maximum range, then basis
The output voltage needing adjustment pressure regulator of new testing scheme and scalable load, switch three-phase standard further according to new testing scheme
The range of table the theoretical umber of pulse of preset three-phase standard scale and the number of turns；
(E) step (C) and step (D) are repeated until completing the test job of 3 groups of testing schemes；
(F) test mode is exited: first adjust scalable and be loaded to zero load, then adjust the output voltage of pressure regulator extremely
0V, is then shut off scalable load to disconnect scalable load, cut-off breaker, last deenergization unit power supply.
The adjustment mode further defining that adjustment pressure regulator output voltage as this method is the most direct
Adjust or by industrial computer to pressure regulator Indirect method, by selecting switch to select adjustment mode before adjusting.
The adjustment mode further defining that adjustment scalable load as this method is direct by touch control device
Adjust or by industrial computer, scalable loaded Indirect method.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. for electric energy meter quantification stability test a system, it is characterized in that: include power subsystem, metering collecting unit,
Measurement verification unit and load unit, wherein:
Described power subsystem, is configured with power interface and the pressure regulator being connected by chopper with power interface；
Described metering collecting unit, is configured with the table torr installing tested electric energy meter, and described table torr has the tested electric energy meter of connection
Communication interface and the output interface being connected with communication interface and with the chute matched bottom tested electric energy meter and for will
Tested electric energy meter is fixed on the rotary buckle in chute；
Described measurement verification unit, is configured with industrial computer and the error instrument being connected with industrial computer, and described error instrument has connected
Having the outfan of the standard electric energy meter of type and the table torr output interface of tested electric energy meter, described industrial computer controls pressure regulation simultaneously
Device；
Described load unit, is provided with the scalable load being controlled by industrial computer.
A kind of quantification stability for electric energy meter tests system, it is characterized in that: described load is single
Unit is additionally provided with and loads, with scalable, the PLC being connected, and described PLC connects touch control device, described
Touch control device is simultaneously connected with industrial computer.
A kind of quantification stability for electric energy meter tests system, it is characterized in that: described pressure regulator
Outfan pass sequentially through tested electric energy meter and standard electric energy meter and be connected with scalable load.
A kind of quantification stability for electric energy meter tests system, it is characterized in that: described pressure regulator
Outfan pass sequentially through standard electric energy meter and tested electric energy meter and be connected with scalable load.
A kind of quantification stability for electric energy meter tests system, it is characterized in that: described Biao Tuobao
Include phase mutual inductance type table torr, single-phase meter torr and/or three-phase direct table torr, corresponding installation phase mutual inductance type electric energy meter, single-phase electricity
Can table and/or three-phase direct electric energy meter.
A kind of quantification stability for electric energy meter tests system, it is characterized in that: described pressure regulator
Outfan connect have the voltmeter head for showing pressure regulator output voltage amplitude.
7., for a quantification stability method of testing for electric energy meter, it is characterized in that: comprise the following steps:
(1) some groups of testing schemes are determined according to the actually used operating mode of tested electric energy meter；
(2) adjust test system, progressively adjust the output voltage extremely test required voltage value of pressure regulator, then adjust scalable load
To the required load of test, need the range of switching standards electric energy meter, and the theoretical umber of pulse of pre-set criteria electric energy meter according to test
And the number of turns；
(3) according to the output voltage needing adjustment pressure regulator in real time and scalable load, the tested electricity of Real-time Collection of testing scheme
Energy table and the variable of standard electric energy meter, and ask difference to obtain the error in dipping value of tested electric energy meter；
(4) first the range of standard electric energy meter is switched to maximum range, then adjust according to the needs of another testing scheme and adjust
The output voltage of depressor and scalable load, further according to range the pre-set criteria electricity of another testing scheme switching standards electric energy meter
The theoretical umber of pulse of energy table and the number of turns；
(5) step (3)-(4) are repeated, until completing the test job of all testing schemes.
A kind of quantification stability method of testing for electric energy meter, is characterized in that: described step
(2), in, it is disconnected for first confiring that the power supply of power subsystem and chopper are the scalable load of off-state and load unit
Open state, is then switched on power by power interface, close circuit breaker, starts scalable load to access scalable load.
A kind of quantification stability method of testing for electric energy meter, is characterized in that: described step
(2), in, the adjustment mode adjusting pressure regulator output voltage is directly to adjust manually or exchanged by industrial computer
Depressor Indirect method, by selecting switch to select adjustment mode before adjusting.
A kind of quantification stability method of testing for electric energy meter, is characterized in that: described step
(5) in, it is completed backed off after random test mode, first adjusts scalable and be loaded to zero load, then adjust the output electricity of pressure regulator
It is depressed into 0V, is then shut off scalable load to disconnect scalable load, cut-off breaker, last deenergization unit power supply.
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| CN201610601160.0A CN106054113B (en) | 2016-07-27 | 2016-07-27 | A kind of quantification stability for electric energy meter tests system and its test method |
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| CN201610601160.0A CN106054113B (en) | 2016-07-27 | 2016-07-27 | A kind of quantification stability for electric energy meter tests system and its test method |
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| CN106054113B CN106054113B (en) | 2018-09-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916438A (en) * | 2019-03-04 | 2019-06-21 | 苏州市计量测试院 | A kind of ageing tester and ageing testing method of gas alarm |
| CN111965587A (en) * | 2020-08-26 | 2020-11-20 | 安徽南瑞中天电力电子有限公司 | Automatic test method and automatic test platform for stability of electric energy meter |
| CN113447880A (en) * | 2021-05-28 | 2021-09-28 | 国网河北省电力有限公司营销服务中心 | Fault diagnosis method and device for electric energy meter and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109916438A (en) * | 2019-03-04 | 2019-06-21 | 苏州市计量测试院 | A kind of ageing tester and ageing testing method of gas alarm |
| CN111965587A (en) * | 2020-08-26 | 2020-11-20 | 安徽南瑞中天电力电子有限公司 | Automatic test method and automatic test platform for stability of electric energy meter |
| CN111965587B (en) * | 2020-08-26 | 2024-01-26 | 安徽南瑞中天电力电子有限公司 | Automatic test method and automatic test platform for stability of electric energy meter |
| CN113447880A (en) * | 2021-05-28 | 2021-09-28 | 国网河北省电力有限公司营销服务中心 | Fault diagnosis method and device for electric energy meter and terminal equipment |
| CN113447880B (en) * | 2021-05-28 | 2022-07-22 | 国网河北省电力有限公司营销服务中心 | Fault diagnosis method and device for electric energy meter and terminal equipment |
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| Publication number | Publication date |
|---|---|
| CN106054113B (en) | 2018-09-11 |
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Address after: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: State Grid Corporation of China |
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Effective date of registration: 20210401 Address after: No. 150, Jinger Road, Daguanyuan, Shizhong District, Jinan City, Shandong Province Patentee after: Shandong Electric Power Marketing Center Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: STATE GRID CORPORATION OF CHINA |