CN207440274U - The high-voltage electric energy meter calibrating installation that can integrally trace to the source - Google Patents
The high-voltage electric energy meter calibrating installation that can integrally trace to the source Download PDFInfo
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- CN207440274U CN207440274U CN201721646435.9U CN201721646435U CN207440274U CN 207440274 U CN207440274 U CN 207440274U CN 201721646435 U CN201721646435 U CN 201721646435U CN 207440274 U CN207440274 U CN 207440274U
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Abstract
The utility model discloses a kind of high-voltage electric energy meter calibrating installation that can integrally trace to the source, including calibrating installation control module, three-phase calibration power source；The calibrating installation control module includes industrial personal computer, the user interface being connected with industrial personal computer, digital quantity signal change-over panel, pulse input output board；The three-phase calibration power source includes the identical and mutually independent single-phase calibration power source of three structures, the single-phase calibration power source mainly includes standard scale, low-voltage signal source, power amplifier, current lifting device, booster, current transformer, voltage transformer, the output terminal of current lifting device and the primary side composition electric current output loop of current transformer, the secondary side of current transformer is connected with standard scale, and the output terminal of booster is connected as voltage output end, by voltage transformer with standard scale；The standard scale of each single-phase calibration power table is connected with each other with digital quantity signal change-over panel.The utility model can integrally trace to the source to high-voltage electric energy meter Whole verification and calibrating installation precision.
Description
Technical field
The utility model is related to high pressure electrical measurement fields, are related to a kind of power equipment calibrating and calibration technology, more particularly to
A kind of high-voltage electric energy meter calibrating installation that can integrally trace to the source.
Background technology
With economic rapid development, power demand is increasing, digitlization, information-based, networking be electrical energy measurement with
The direction of electric network measuring and controlling technology development.Main business income of the income of the electricity charge as electric power enterprise, and it is adjusted
Main Basiss are realized by electric energy tariffing device, and high voltage electric energy meter apparatus is exactly important electric energy tariffing instrument, by
High-pressure side is in high-voltage electric energy meter metering units, conventional low voltage electricity filching means are difficult to carry out, therefore the device has brilliance
Thief-proof electrical property.High-voltage electric energy meter is as measurement instrument, it is necessary to be closed by the objective and accurate metering and calibrating device calibrating of specialty
After lattice, can just it come into operation.
For traditional high-voltage electric-energy meter, internal voltage transformer, current transformer are mainly examined and determine respectively
And electric energy meter, when they reach certain accuracy requirement, the method for error synthesis is reused to assess high-voltage electric energy measurement
The accuracy of device entirety.This method one is not meet national standard on substantially former as defined in electric energy meter and calibrator for watt-hour meter
Then：" error of all instrument and measuring device must all carry out actual measurement, without measurement, be fallen into a trap with other measurements
Error that is calculating and quoting voltage, electric current and power factor combination, it is impossible to the foundation as evaluating apparatus elementary error "；
Second is that the Whole verification of novel all-in-one high-voltage electric energy meter is not suitable for it.
Some current existing high-voltage electric energy meter Integral calibrating apparatus are added high pressure mutually using standard scale, low-voltage signal source
Sensor scheme, between each component independently of each other, between be connected using conducting wire.Although this scheme can be realized to high-voltage electric energy meter
Whole verification, but calibrating installation can not realize that the entirety of precision is traced to the source, typical magnitude trace to the source be by standards at different levels step by step
It is traceable to national electric energy benchmark (3 × 10-5).Under current state, conducting wire internal resistance loss can not be ignored, during each connecting wire
Contact resistance be also not quite similar, these can all change calibrating installation itself precision, so as to directly affect calibrating high-voltage electric energy meter
The accuracy and legitimacy of precision result.Simultaneously《JJG 597-2005 AC electrical energy meter calibrations》Middle claimed apparatus are examined for the first time
Follow-up calibrating for the first time is carried out within 1 year after fixed, the re-testing periods hereafter subsequently examined and determine are 2 years.So calibrating installation should also be set in itself
Compact, conveniently moving is counted, regular is examined and determine convenient for the later stage to testing agency.
Therefore it is urgent to provide a kind of new high-voltage electric energy meter calibrating installations to solve the above problems.
Utility model content
It can be to high-voltage electric energy meter Whole verification and calibrating the technical problem to be solved by the utility model is to provide one kind
The high-voltage electric energy meter calibrating installation that device precision can integrally trace to the source.
In order to solve the above technical problems, the technical solution that the utility model uses is：There is provided one kind can integrally trace to the source
High-voltage electric energy meter calibrating installation, mainly include calibrating installation control module, three-phase calibration power source；
The calibrating installation control module mainly includes industrial personal computer, the user interface being connected with industrial personal computer, digital quantity signal
Change-over panel, pulse input output board；
The three-phase calibration power source includes the identical and mutually independent single-phase calibration power source of three structures, for tested height
Electric energy meter is pressed to provide single-phase or three-phase voltage and adjustable current；
Each single-phase calibration power source is connected with calibrating installation control module.
In one preferred embodiment of the utility model, it is identical and mutual that the three-phase calibration power source includes three structures
Independent single-phase calibration power source, the single-phase calibration power source mainly include standard scale, low-voltage signal source, power amplifier,
Current lifting device, booster, current transformer, voltage transformer, standard scale, low-voltage signal source, power amplifier are sequentially connected, up-flow
The input terminal of device, the input terminal of booster are connected with power amplifier, and the output terminal and current transformer of current lifting device are once
Side forms electric current output loop, and the secondary side of current transformer is connected with standard scale, and the output terminal of booster is as voltage output
End is connected by voltage transformer with standard scale；The standard scale of each single-phase calibration power table with digital quantity signal change-over panel
It is connected with each other.
In one preferred embodiment of the utility model, the low-voltage signal source includes current source, voltage source, the electric current
The exportable low current in source, the exportable low-voltage signal of voltage source.
Further, the single-phase calibration power source is standalone chassis, and bottom is provided with universal wheel, conveniently moving.
In one preferred embodiment of the utility model, the pulse input output board is provided with wireless communication module, real
Existing wireless receiving is detected the high frequency or low-frequency pulse of high-voltage electric energy meter output, and the standard high frequency of transmittable standard scale output and low
Frequency pulse.
In one preferred embodiment of the utility model, the digital quantity signal change-over panel, pulse input output board grafting
In the pci card slot of the industrial personal computer.
The beneficial effects of the utility model are：
(1) signal source and mutual inductor, standard scale are designed as an entirety by the utility model, in same casing,
Each several part is avoided into connect cumbersome of row conductor and under current state, because conducting wire and conducting wire connection influence calibrating installation from
Body accuracy of detection can not only carry out Whole verification to high-voltage electric energy meter, and allow the precision of the calibrating installation whole
It traces to the source, improves the accuracy and legitimacy of calibrating high-voltage electric energy meter precision result；
(2) the utility model can carry out Direct Test to the global error of direct access high-voltage electric energy meter, solve
Implement the problem of piece calibration and measurement verification, while the output of its electric current and 10kV high pressures etc. to direct access high-voltage electric energy meter
Current potential simulates working condition of the high-voltage electric energy meter under the conditions of high-voltage fence, the high-voltage electric energy meter margin of error for obtaining calibrating
Value more meets on-site actual situations；
(3) the utility model can integrally trace to the source as calibrating installation, precision, solve typical magnitude in the prior art
The cumbersome of national electric energy benchmark need to be traceable to step by step by standards at different levels, overall structure is compact, conveniently moving, after being convenient for when tracing to the source
Phase is regular to carry out precision verification to testing agency；
(4) the utility model is a unit per phase calibration power source, and structure is identical and mutually independent, can be operated in list
Under the modes of connection such as phase, phase three-wire three and three-phase and four-line, the phase in each phase calibration power source is locked by industrial personal computer, and can dynamic
Electric current output is adjusted, controls single-phase calibration power source output accuracy, realizes wide-range calibrating.
Description of the drawings
Fig. 1 is the structure diagram for one preferred embodiment of high-voltage electric energy meter calibrating installation that the utility model can integrally trace to the source；
Fig. 2 is the functional block diagram that the high-voltage electric energy meter calibrating installation that can integrally trace to the source carries out high-voltage electric energy meter detection；
The mark of each component is as follows in attached drawing：1st, calibrating installation control module, 2, user interface, 3, industrial personal computer, 4, pulse
Input/output board, 5, digital quantity signal change-over panel, 6, single-phase calibration power table, 7, standard scale, 8, low-voltage signal source, 9, electric current it is mutual
Sensor, 10, power amplifier, 11, current lifting device, 12, booster, 13, voltage transformer, 14, three-phase calibration power source, 15, quilt
Examine high-voltage electric energy meter.
Specific embodiment
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model
Define.
It please refers to Fig.1 and Fig. 2, the utility model embodiment includes：
A kind of high-voltage electric energy meter calibrating installation that can integrally trace to the source mainly includes calibrating installation control module 1, three-phase standard
Power source 14.
The calibrating installation control module 1 mainly includes industrial personal computer 3, the user interface 2 being connected with industrial personal computer 3, digital quantity
Signal transducer 5, pulse input output board 4.It is identical and mutually independent that the three-phase calibration power source 14 includes three structures
Single-phase calibration power source 6 can be that tested high-voltage electric energy meter 15 provides single-phase or three-phase voltage and adjustable current.The single-phase mark
Quasi- power source 6 mainly includes standard scale 7, low-voltage signal source 8, power amplifier 10, current lifting device 11, booster 12, Current Mutual Inductance
Device 9, voltage transformer 13, the low-voltage signal source 8 include current source, voltage source, standard scale 7, current source, power amplifier 10
It is sequentially connected with the input terminal of current lifting device 11, the output terminal of current lifting device 11 and tested high-voltage electric energy meter 15, the one of current transformer 9
Secondary side forms electric current output loop, and the secondary side of current transformer 9 is connected with standard scale 7；Standard scale 7, current source, power amplification
Device 10 and the input terminal of booster 12 are sequentially connected, the output terminal of booster 12 as voltage output end, pass through voltage transformer
13 are connected with standard scale 7；The standard scale of each single-phase calibration power table 6 is connected with each other with digital quantity signal change-over panel 5.
The industrial personal computer 3 is the control core of the calibrating installation, realizes and controls single-phase calibration power source output, margin of error
According to functions such as processing and report generations.The user interface 2 can intuitively show various measurement data and waveform, provide hommization
Interactive controlling window, operating personnel can realize parameter setting, the control start and stop of single-phase calibration power source, calibrating in user interface 2
The operations such as flow start and stop.The pulse input output board 4 and digital quantity signal change-over panel 5 are plugged on the PCI of industrial personal computer 3
In (Peripheral Component Interconnection, peripheral element extension interface) card slot.The pulse input is defeated
Ejecting plate 4 is provided with wireless communication module (not shown), realize wireless receiving be detected the output of high-voltage electric energy meter 15 high frequency or
Low-frequency pulse, and the standard high frequency and low-frequency pulse that transmittable standard scale 7 exports.The digital quantity signal change-over panel 5 is by industry control
The setting command package that machine 3 is sent issues single-phase calibration power source 6, controls the start and stop of single-phase calibration power source, while by single-phase mark
Quasi- power source forward data is parsed into digital quantity signal and is sent into industrial personal computer 3.
The three-phase calibration power source 14 is designed for split, comprising three single-phase calibration power sources 6, per phase calibration power source
For a cabinet, structure is identical and works independently, and the bottom of cabinet is provided with universal wheel, conveniently moving.By by signal source
An entirety is synthesized with mutual inductor, standard scale and forms single-phase calibration power source 6, single-phase, phase three-wire three and three-phase four can be operated in
Under the modes of connection such as line, the phase in each phase calibration power source is locked by industrial personal computer 3, so as to form three-phase calibration power source 14.
The 6 exportable standard voltage source of single-phase calibration power source and normalized current source, are measured and are locked by industrial personal computer 3
Therebetween phase.Wherein, standard voltage source output process is：The voltage source exports low voltage signal through power amplifier
10 and booster 12 export high-voltage signal, which is converted into small-signal by voltage transformer 13 and feeds back to standard scale 7,
Voltage output signal and voltage feedback signal are thus generated in standard scale, then industrial personal computer 3 is according to the standard scale 7 received
Data export signal using pid algorithm comparison voltage and voltage feedback signal obtain a voltage differences signal, real-time update standard
The output voltage of table 7 realizes the output of dynamic regulation voltage source.Normalized current source exports process：The current source exports small electricity
It flows signal and exports high current through power amplifier 10 and current lifting device 11, which is converted into small-signal by current transformer 9
It feeds back to standard scale 7, thus current output signal and current feedback signal is generated in standard scale, then industrial personal computer 3 is according to connecing
The data of the standard scale 7 received compare current output signal using pid algorithm and current feedback signal obtain current difference letter
Number, the output current of real-time update standard scale 7 realizes the output of dynamic regulation current source, so as to fulfill control power source output essence
Degree and wide-range calibrating.
As shown in Fig. 2, the process examined and determine using the utility model a kind of high-voltage electric energy meter, is specifically included：
Calibrating installation control module 1 controls 14 point-by-point outputting standard of three-phase calibration power source according to user both regular inspection table scheme
Electric current, and directly export 10kV high voltages.It is defeated under tested high-voltage electric energy meter 15 sets output drive in three-phase calibration power source 14
Go out high-frequency impulse.Pulse input output board 4 collects the high frequency of tested high-voltage electric energy meter output by the wireless communication module
Pulse, and be sent into industrial personal computer 3, compared with this pulse is derived from the calibration pulse that body exports by industrial personal computer 3 with calibration power, calculate
To high-voltage electric energy meter global error precision.It is calculated by formula (1)：
When needing to examine and determine the calibrating installation itself precision, the exportable standard work(of pulse input output board
The calibration pulse in rate source carries out precision verification with higher primary standard.
Signal source and mutual inductor, standard scale are designed as an entirety by the utility model, in same casing, are avoided
Each several part is into connect cumbersome of row conductor and under current state, because conducting wire and conducting wire connection influence calibrating installation itself inspection
Precision is surveyed, Whole verification can not only be carried out to high-voltage electric energy meter, and the precision of the calibrating installation is allow integrally to trace to the source,
Improve the accuracy and legitimacy of calibrating high-voltage electric energy meter precision result.First, the utility model can be to direct access
The global error of high-voltage electric energy meter carries out Direct Test, solves and implements piece calibration and meter to direct access high-voltage electric energy meter
The problem of calibrating, while the output of its electric current and 10kV high pressure equipotentials are measured, simulates high-voltage electric energy meter under the conditions of high-voltage fence
Working condition, the high-voltage electric energy meter error value that calibrating obtains is made more to meet on-site actual situations；Secondly, the utility model is made
For calibrating installation, precision can integrally trace to the source, solve when typical magnitude is traced to the source in the prior art need to pass through standards at different levels by
Grade is traceable to the cumbersome of national electric energy benchmark, and overall structure is compact, conveniently moving, regular is carried out convenient for the later stage to testing agency
Precision verification.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly used in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of high-voltage electric energy meter calibrating installation that can integrally trace to the source, which is characterized in that mainly include calibrating installation control module,
Three-phase calibration power source；
The calibrating installation control module mainly includes industrial personal computer, the user interface being connected with industrial personal computer, digital quantity signal conversion
Plate, pulse input output board；
The three-phase calibration power source includes the identical and mutually independent single-phase calibration power source of three structures, to be detected high-voltage electricity
It can the table single-phase or three-phase voltage of offer and adjustable current；
Each single-phase calibration power source is connected with calibrating installation control module.
2. the high-voltage electric energy meter calibrating installation according to claim 1 that can integrally trace to the source, which is characterized in that the single-phase mark
Quasi- power source is mainly mutual including standard scale, low-voltage signal source, power amplifier, current lifting device, booster, current transformer, voltage
Sensor, standard scale, low-voltage signal source, power amplifier are sequentially connected, and the input terminal of current lifting device, the input terminal of booster are and work(
Rate amplifier is connected, the output terminal of current lifting device and the primary side composition electric current output loop of current transformer, current transformer
Secondary side is connected with standard scale, and the output terminal of booster is connected as voltage output end, by voltage transformer with standard scale；Often
The standard scale of a single-phase calibration power table is connected with each other with digital quantity signal change-over panel.
3. the high-voltage electric energy meter calibrating installation according to claim 2 that can integrally trace to the source, which is characterized in that the low pressure letter
Number source includes current source, voltage source.
4. the high-voltage electric energy meter calibrating installation according to any one of claims 1 to 3 that can integrally trace to the source, which is characterized in that
The single-phase calibration power source is standalone chassis, and bottom is provided with universal wheel.
5. the high-voltage electric energy meter calibrating installation according to claim 1 that can integrally trace to the source, which is characterized in that the pulse is defeated
Enter output board and be provided with wireless communication module.
6. the high-voltage electric energy meter calibrating installation according to claim 1 that can integrally trace to the source, which is characterized in that the digital quantity
Signal transducer, pulse input output board are plugged in the pci card slot of the industrial personal computer.
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| CN201721646435.9U CN207440274U (en) | 2017-11-30 | 2017-11-30 | The high-voltage electric energy meter calibrating installation that can integrally trace to the source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748348A (en) * | 2017-11-30 | 2018-03-02 | 国网安徽省电力公司淮南供电公司 | The high-voltage electric energy meter calibrating installation that can integrally trace to the source |
| CN110579735A (en) * | 2019-10-30 | 2019-12-17 | 中国石油化工股份有限公司 | Online calibrator and field calibration method for electric energy meter of high-voltage water injection motor |
| CN112235016A (en) * | 2020-07-09 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Intelligent electric energy meter calibrating device based on Bluetooth communication |
-
2017
- 2017-11-30 CN CN201721646435.9U patent/CN207440274U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748348A (en) * | 2017-11-30 | 2018-03-02 | 国网安徽省电力公司淮南供电公司 | The high-voltage electric energy meter calibrating installation that can integrally trace to the source |
| CN110579735A (en) * | 2019-10-30 | 2019-12-17 | 中国石油化工股份有限公司 | Online calibrator and field calibration method for electric energy meter of high-voltage water injection motor |
| CN112235016A (en) * | 2020-07-09 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Intelligent electric energy meter calibrating device based on Bluetooth communication |
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