CN206960641U - Intelligent electric energy meter Performance Evaluation experimental rig - Google Patents
Intelligent electric energy meter Performance Evaluation experimental rig Download PDFInfo
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- CN206960641U CN206960641U CN201720574093.8U CN201720574093U CN206960641U CN 206960641 U CN206960641 U CN 206960641U CN 201720574093 U CN201720574093 U CN 201720574093U CN 206960641 U CN206960641 U CN 206960641U
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Abstract
The utility model discloses a kind of intelligent electric energy meter Performance Evaluation experimental rig, including power module, phase sequence handover module, control module, communication module, current control module and standard scale, the standard scale and electric energy meter to be measured series connection, the power module is connected by the phase sequence handover module with the electric energy meter to be measured, the current control module is connected with the electric energy meter to be measured, the power module and current control module are connected by communication module with control module, and the electric energy meter to be measured and standard scale are connected by communication module with the control module.Intelligent electric energy meter Performance Evaluation experimental rig of the present utility model has the advantages that simple in construction, easy to detect accurate.
Description
Technical field
The utility model relates generally to electrical equipment technical field, refers in particular to a kind of intelligent electric energy meter Performance Evaluation experiment dress
Put.
Background technology
According to the general requirement of the unified strong intelligent grid of State Grid Corporation of China's foundation, accurate, system in terms of electric energy metrical
First, efficient, concentration turns into a key link.Thus sales department of Guo Wang companies has put into effect the newest series mark of intelligent electric energy meter
Standard, making every effort to reach makes intelligent meter more specification accurately and reliably.But current domestic intelligent electric energy meter manufacturer development ability ginseng
Difference it is uneven, the intelligent meter quality produced is also very different, and in the market product quality coexists, some electric energy meters even run one to
Occur as soon as quality problems within 2 years, such as damage, do not have good luck, electricity loss failure phenomenon, relying solely on domestic existing intelligent meter
Detection means can not detect its quality.
At present China in laboratory to being the GB series formulated according to IEC standard mostly the examination criteria of single-phase intelligent electric energy meter
The technical specification that national standard or JJG calibrating specifications and Guo Wang companies formulate.Pass through different regions and historical test data point
Analysis, it can be seen that being taken temperature for nearly all producer can be tested by various criterion in laboratory environments.
But the information on the other hand fed back to from live running situation shows that these are in the qualified electric energy of test in laboratory
Table, running situation at the scene is unsatisfactory, such as long-time shunt running, communication is unreliable, error is overproof etc..And these are asked
The table of topic can not be completely reproduced up live produced problem after tearing open back on common electric energy meter calibrating apparatus.It is wherein critically important
Reason is exactly to detect environment to differ widely, and the complicated power utilization environment in scene can not reappear on common calibrating installation.
Utility model content
The technical problems to be solved in the utility model is that：It is new for technical problem existing for prior art, this practicality
Type provides a kind of accurately intelligent electric energy meter Performance Evaluation experimental rig simple in construction, easy to detect.
In order to solve the above technical problems, the utility model proposes technical scheme be：
A kind of intelligent electric energy meter Performance Evaluation experimental rig, including it is power module, phase sequence handover module, control module, logical
Module, current control module and standard scale are interrogated, the standard scale and electric energy meter to be measured series connection, the power module pass through the phase
Sequence handover module is connected with the electric energy meter to be measured, and the current control module is connected with the electric energy meter to be measured, the power supply
Module and current control module are connected by communication module with control module, and the electric energy meter to be measured and standard scale pass through communication
Module is connected with the control module.
Further improvement as above-mentioned technical proposal：
The power module includes three-phase virtual load voltage source and six phase virtual load current sources, the three-phase virtual load voltage
Source and six phase virtual load current sources are connected by communication module with the control module.
The current control module includes epitope plate, output control panel and the current isolation mutual inductor being sequentially connected, described
Current isolation mutual inductor is connected with the electric energy meter to be measured, and the epitope plate is connected by communication module with the control module.
The power module is connected by RS232 buses with the communication module.
Also include display module, the display module is connected with the control module.
Also include standard clock source, the standard clock source is connected by communication module with the control module；The mark
Quasi- clock source is connected by CAN with the communication module.
Also include carrier switching module, the carrier switching module respectively with the phase sequence handover module and communication module phase
Even.
Also include power consumption test module, the power consumption test module is connected with the electric energy meter to be measured and standard scale.
Also include humiture test box, the humiture test box is connected with the control module, the electric energy meter to be measured
It is placed in standard scale in the humiture test box.
The humiture test box is connected by RS232 buses with the control module.
Compared with prior art, the utility model has the advantage of：
Intelligent electric energy meter Performance Evaluation experimental rig of the present utility model, power module is controlled to be measured by control module
Electric energy meter and standard scale input experiment power supply, and electric current is adjusted by current control module, then by electric energy meter to be measured
Contrasted with standard scale parameters, whether electric energy meter to be measured is normal according to corresponding to judging comparing result, simple in construction, behaviour
Make easy and be easily achieved.
Brief description of the drawings
Fig. 1 is frame structure schematic diagram of the present utility model.
Label represents in figure：1st, power module；11st, three-phase virtual load voltage source；12nd, six phase virtual load current source；2nd, phase
Sequence handover module；3rd, current control module；31st, epitope plate；32nd, output control panel；33rd, current isolation mutual inductor；4th, mould is controlled
Block；5th, communication module；6th, standard clock source；7th, carrier switching module；8th, display module；9th, power consumption test module；10th, humiture
Chamber.
Embodiment
The utility model is further described below in conjunction with Figure of description and specific embodiment.
As shown in figure 1, the intelligent electric energy meter Performance Evaluation experimental rig of the present embodiment, including the switching of power module 1, phase sequence
Module 2, control module 4, communication module 5, current control module 3 and standard scale（That is standard electric energy meter）, standard scale and electricity to be measured
Energy table series connection, power module 1 are connected by phase sequence handover module 2 with electric energy meter to be measured, current control module 3 and electric energy meter to be measured
It is connected, power module 1 and current control module 3 are connected by communication module 5 with control module 4, electric energy meter and standard scale to be measured
It is connected by communication module 5 with control module 4.When being tested, the output test voltage of power module 1, phase sequence switching mould
Block 2 switches over to the phase sequence of test voltage, then exports to electric energy meter to be measured and standard scale, is controlled by current control module 3
The electric current of each electric energy meter is inputted, electric energy meter and standard scale to be measured are measured, while gather each parameter of each electric energy meter（Mainly
The electric energy of metering）Contrasted, as the difference between the parameter of electric energy meter to be measured and the parameter of standard electric energy meter is more than default threshold
Value, then can determine whether that corresponding electric energy meter to be measured is unqualified；Intelligent electric energy meter Performance Evaluation experimental rig structure of the present utility model
Simply, it is easy to operate and be easily achieved.
As shown in figure 1, in the present embodiment, power module 1 includes three-phase virtual load voltage source 11 and six phase virtual load electric currents
Source 12, three-phase virtual load voltage source 11 and six phase virtual load current sources 12 are connected by communication module 5 with control module 4；Its
Middle power module 1 passes through RS232 buses and communication module 5（Such as WT-ZP901B）It is connected.When being tested, difference may be selected
Power supply type, with as far as possible simulate scene power supply environment.In the present embodiment, multi-channel test passage can be set, can be simultaneously
Test multiple electric energy meters to be measured（Such as 6 in Fig. 1）, because the power supply for the electric energy meter access being installed in situ metrology case is separate
It is uncertain, therefore a certain phase or mean allocation that voltage can be connected in three-phase voltage are connected on whole three-phases mothers
Line, i.e., each electric energy meter can both apply identical electric current and power factor, can also apply different electric currents and power factor,
I.e. each electric energy meter using which phase voltage power supply is determined according to the physical cabling in batch meter, and voltage and current phase sequence
Automatically switched by phase sequence handover module 2.
In the present embodiment, epitope plate 31 that current control module 3 includes being sequentially connected, output control panel 32 and it is galvanically isolated
Transformer 33, current isolation mutual inductor 33 are connected with electric energy meter to be measured, and epitope plate 31 passes through communication module 5 and the phase of control module 4
Even；Epitope plate 31 generates current-order to output control panel 32, controlled through output control panel 32 according to the instruction of control module 4
The input current of electric energy meter, the power supply environment at the scene of simulating as far as possible, electric energy meter can be such as carried out under dynamic load impact condition
Accuracy of measuring experiment, the circuit that be combined of high speed electronic switch and slow-speed relay can be used, carrying out dynamic impulsion
Current loop is switched to high speed electronic switch pattern during load, and it is negative to apply dynamic to tested electric energy meter by the action of electronic switch
Charged current, while the synchronous dynamic that standard scale is also measured follows, i.e., standard meter amount when tested table has load, be tested table without
Standard scale stops metering during load, ensure that the science and accuracy of metering, and it is noiseless, convenient and swift to test process.Wherein
Current isolation mutual inductor 33 is electronic compensation type current isolation mutual inductor 33, and each electric energy meter is each equipped with one, realizes
The consistency detection of electric energy meter zero line and live wire electric current, it is ensured that the electric current applied on zero live wire is consistent, and each electric energy
Transformer corresponding to table is separate, does not interfere with each other, can be with the zero line function of measuring of effective detection intelligent electric energy meter.Wherein mutual inductance
Device will ensure accuracy class, prevent zero live wire electric current is inconsistent from causing earth leakage protective device to act；Due to being not easy to reach during low current
To the action current of earth leakage protective device, therefore error precision of the transformer in low current somewhat can relax a bit, but to the greatest extent
Amount ensures the precision of high current, and the bigger precision needs of electric current are higher.
In the present embodiment, in addition to standard clock source 6, standard clock source 6 are connected by communication module 5 with control module 4；
Standard clock source 6 is connected by CAN with communication module 5；Standard clock source 6 is used for the working time for calibrating each electric energy meter,
Ensure the accuracy of test.
In the present embodiment, in addition to carrier switching module 7（Such as WT-ZP912E）, carrier switching module 7 cuts with phase sequence respectively
Mold changing block 2 is connected with communication module 5.When carrying out carrier test, carrier switching module 7 sends carrier signal, output to experiment
Power supply, finally it is sent in electric energy meter and standard scale to be measured, carries out carrier test analysis after handling each carrier signal again,
Result of communication after test analysis judges whether electric energy meter performance is qualified compared with predefined threshold value, according to comparative result
（Specific test process belongs to conventional detection, will not be repeated here）.
In the present embodiment, in addition to power consumption test module 9, power consumption test module 9 are connected with electric energy meter to be measured and standard scale.
Power consumption test module 9 can detect to the voltage and current of electric energy meter, and by the work(between electric energy meter to be measured and standard scale
Rate is contrasted, to judge whether the power consumption of electric energy meter to be measured is normal（Specific test process belongs to conventional detection, no longer superfluous herein
State）.
In the present embodiment, in addition to humiture test box 10, humiture test box 10 are connected with control module 4, electricity to be measured
Energy table and standard scale are placed in humiture test box 10；In the present embodiment, humiture test box 10 passes through RS232 buses and control
Molding block 4 is connected.While every test is carried out, electric energy meter to be measured and standard scale are placed in humiture test box 10,
By the temperature and humidity in the control cabinet body of control module 4 with simulation site environment of trying one's best, so as to ensure the true of test result
Property（Humiture test box 10 belongs to conventional structure, is such as heated by resistance wire, sprays to moisturize, herein no longer
Repeat）.
In the present embodiment, in addition to display module 8, display module 8 are connected with control module 4.Display module 8 can be to each
Test result, as the humiture in gauge check, consumption detection, carrier wave detection and casing carries out display directly perceived in real time, side
Just testing crew is checked.
Although the utility model is disclosed above with preferred embodiment, but it is not limited to the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model scope, all using the disclosure above
Technology contents technical solutions of the utility model are made with many possible changes and modifications, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to real above
Any simple modifications, equivalents, and modifications that example is done are applied, all should be fallen in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of intelligent electric energy meter Performance Evaluation experimental rig, it is characterised in that including power module（1）, phase sequence handover module
（2）, control module（4）, communication module（5）, current control module（3）And standard scale, the standard scale and electric energy meter string to be measured
Connection, the power module（1）Pass through the phase sequence handover module（2）It is connected with the electric energy meter to be measured, the current control mould
Block（3）It is connected with the electric energy meter to be measured, the power module（1）And current control module（3）Pass through communication module（5）With control
Molding block（4）It is connected, the electric energy meter to be measured and standard scale pass through communication module（5）With the control module（4）It is connected.
2. intelligent electric energy meter Performance Evaluation experimental rig according to claim 1, it is characterised in that the power module
（1）Including three-phase virtual load voltage source（11）With six phase virtual load current sources（12）, the three-phase virtual load voltage source（11）With
Six phase virtual load current sources（12）Pass through communication module（5）With the control module（4）It is connected.
3. intelligent electric energy meter Performance Evaluation experimental rig according to claim 1, it is characterised in that the current control mould
Block（3）Including the epitope plate being sequentially connected（31）, output control panel（32）And current isolation mutual inductor（33）, it is described to be galvanically isolated
Transformer（33）It is connected with the electric energy meter to be measured, the epitope plate（31）Pass through communication module（5）With the control module（4）
It is connected.
4. intelligent electric energy meter Performance Evaluation experimental rig according to claim 1, it is characterised in that the power module
（1）Pass through RS232 buses and the communication module（5）It is connected.
5. intelligent electric energy meter Performance Evaluation experimental rig as claimed in any of claims 1 to 4, it is characterised in that
Also include display module（8）, the display module（8）With the control module（4）It is connected.
6. intelligent electric energy meter Performance Evaluation experimental rig as claimed in any of claims 1 to 4, it is characterised in that
Also include standard clock source（6）, the standard clock source（6）Pass through communication module（5）With the control module（4）It is connected；Institute
State standard clock source（6）Pass through CAN and the communication module（5）It is connected.
7. intelligent electric energy meter Performance Evaluation experimental rig as claimed in any of claims 1 to 4, it is characterised in that
Also include carrier switching module（7）, the carrier switching module（7）Respectively with the phase sequence handover module（2）And communication module
（5）It is connected.
8. intelligent electric energy meter Performance Evaluation experimental rig as claimed in any of claims 1 to 4, it is characterised in that
Also include power consumption test module（9）, the power consumption test module（9）It is connected with the electric energy meter to be measured and standard scale.
9. intelligent electric energy meter Performance Evaluation experimental rig as claimed in any of claims 1 to 4, it is characterised in that
Also include humiture test box（10）, the humiture test box（10）With the control module（4）It is connected, the electric energy to be measured
Table and standard scale are placed in the humiture test box（10）It is interior.
10. intelligent electric energy meter Performance Evaluation experimental rig according to claim 9, it is characterised in that the humiture examination
Tryoff（10）Pass through RS232 buses and the control module（4）It is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720574093.8U CN206960641U (en) | 2017-05-23 | 2017-05-23 | Intelligent electric energy meter Performance Evaluation experimental rig |
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| CN201720574093.8U CN206960641U (en) | 2017-05-23 | 2017-05-23 | Intelligent electric energy meter Performance Evaluation experimental rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083242A (en) * | 2020-08-25 | 2020-12-15 | 中国电力科学研究院有限公司 | On-site calibrating device and method for alternating current charging pile |
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2017
- 2017-05-23 CN CN201720574093.8U patent/CN206960641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083242A (en) * | 2020-08-25 | 2020-12-15 | 中国电力科学研究院有限公司 | On-site calibrating device and method for alternating current charging pile |
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