CN207440273U - Simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system - Google Patents
Simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system Download PDFInfo
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- CN207440273U CN207440273U CN201721320344.6U CN201721320344U CN207440273U CN 207440273 U CN207440273 U CN 207440273U CN 201721320344 U CN201721320344 U CN 201721320344U CN 207440273 U CN207440273 U CN 207440273U
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Abstract
The utility model embodiment discloses a kind of simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system.Simulation and numeral all-in-one calibration power source in the utility model can directly verify traditional electric energy meter by analog output interface circuit after D/A modular converters and power amplifier, digital electricity meter can also be verified by digital-quantity output interface using after Signal-regulated kinase, A/D modular converters and protocol conversion module, flexibility and versatility are high；Simultaneously as analog output interface circuit and the signal of digital-quantity output interface output are from identical power source, the relatively low traditional standard electric energy meter of uncertainty can be connected by analog output interface circuit, the form of digital-quantity output interface connection standard digital electric energy meter carries out magnitude tracing with the relatively low traditional standard electric energy meter of uncertainty to standard digital electric energy meter, solves the technical issues of current standard digital power source is not used to the magnitude tracing of digital electricity meter and low versatility.
Description
Technical field
The utility model is related to power instrument field more particularly to a kind of simulation and numeral all-in-one calibration power source and standard digitals
Electric energy meter magnitude tracing system.
Background technology
Digital transformer substation based on IEC61850 just promotes and applies in China, and digital electricity meter is in digital transformer substation
In application it is also increasingly extensive.The input interface of digital electricity meter is different from the input interface of traditional electric energy meter, it is impossible to tradition
The calibration method of electric energy meter examines and determine digital electricity meter, it is necessary to be examined with standard digital power source to digital electricity meter
It is fixed.
But current standard digital power source is when verifying digital electricity meter, since standard digital power source exports
IEC61850 data frames can not with external actual power standard carry out magnitude comparison, therefore existing standard digital power source only
Checking digital electricity meter, whether the algorithm inside frame losing and digital electricity meter is with the presence or absence of apparent error, and is not used to count
The magnitude tracing of word electric energy meter.And current standard digital power source can not verify traditional electric energy meter.Therefore, lead
The technical issues of current standard digital power source has been caused to be not used to the magnitude tracing of digital electricity meter and low versatility.
Utility model content
The utility model provides a kind of simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system,
Solves the technical issues of current standard digital power source is not used to the magnitude tracing of digital electricity meter and low versatility.
The utility model provides a kind of simulation and numeral all-in-one calibration power source, including：Digital-quantity input interface, D/A conversions
Module, power amplifier, Signal-regulated kinase, A/D modular converters, protocol conversion module, analog output interface circuit and digital quantity
Output interface；
The digital-quantity input interface and the input terminal of the D/A modular converters communicate to connect；
The output terminal of the D/A modular converters is communicated to connect with the input terminal of the power amplifier；
The output terminal of the power amplifier respectively with the input terminal of the Signal-regulated kinase and the analog output
Interface communication connects；
The output terminal of the Signal-regulated kinase and the input terminal of the A/D modular converters communicate to connect；
The output terminal of the A/D modular converters is communicated to connect with the input terminal of the protocol conversion module；
The output terminal of the protocol conversion module is communicated to connect with the digital-quantity output interface.
Preferably, further include：Display screen, touchscreen keypad and industrial personal computer；
The display screen is provided with touchscreen keypad, the output terminal of the display screen and the industrial personal computer input terminal communication link
It connects；
The output terminal of the industrial personal computer is communicated to connect with the digital-quantity input interface.
Preferably, the digital-quantity input interface is serial communication interface.
Preferably, serial communication interface is stated as RS232 communication interfaces.
Preferably, the digital-quantity output interface is fiber optic data communication interface.
Preferably, the fiber optic data communication interface specifically includes：SC communication interfaces and/or ST communication interfaces and/or FC communications
Interface.
The utility model provides a kind of standard digital electric energy meter magnitude tracing system, including：Standard digital electric energy meter, mark
Quasi-mode analog quantity electric energy meter, error calculating device and any one above-mentioned simulation and numeral all-in-one calibration power source；
The uncertainty of the master die analog quantity electric energy meter is less than the uncertainty of the standard digital electric energy meter；
The digital-quantity output interface in the simulation and numeral all-in-one calibration power source and the input terminal of the standard digital electric energy meter
Communication connection；
The input of the analog output interface circuit in the simulation and numeral all-in-one calibration power source and the master die analog quantity electric energy meter
End communication connection；
The output terminal of the standard digital electric energy meter is communicated to connect with the first input end of the error calculating device；
The output terminal of the master die analog quantity electric energy meter is communicated to connect with the second input terminal of the error calculating device.
As can be seen from the above technical solutions, the utility model has the following advantages：
The utility model provides a kind of simulation and numeral all-in-one calibration power source, including：Digital-quantity input interface, D/A conversions
Module, power amplifier, Signal-regulated kinase, A/D modular converters, protocol conversion module, analog output interface circuit and digital quantity
Output interface；The digital-quantity input interface and the input terminal of the D/A modular converters communicate to connect；The D/A modular converters
The input terminal of output terminal and the power amplifier communicate to connect；The output terminal of the power amplifier respectively with the signal
The input terminal of conditioning module and analog output interface circuit communication connection；The output terminal of the Signal-regulated kinase and the A/
The input terminal communication connection of D modular converters；The input terminal of the output terminal and the protocol conversion module of the A/D modular converters leads to
Letter connection；The output terminal of the protocol conversion module is communicated to connect with the digital-quantity output interface.
Simulation and numeral all-in-one calibration power source in the utility model can be straight after D/A modular converters and power amplifier
Analog output interface circuit was connected to verify traditional electric energy meter, it can also be using Signal-regulated kinase, A/D moduluss of conversion
Digital electricity meter is verified by digital-quantity output interface after block and protocol conversion module, flexibility and versatility are high；Together
Shi Yinwei analog output interface circuits and the signal of digital-quantity output interface output can pass through analog quantity from identical power source
The relatively low traditional standard electric energy meter of output interface connection uncertainty, digital-quantity output interface connection standard digital electric energy meter
Form carries out magnitude tracing with the relatively low traditional standard electric energy meter of uncertainty to standard digital electric energy meter, solves current
Standard digital power source is not used to the technical issues of magnitude tracing of digital electricity meter and low versatility.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural representation of the one embodiment in simulation and numeral all-in-one calibration power source provided by the utility model
Figure；
Fig. 2 is a kind of connection relationship diagram of standard digital electric energy meter magnitude tracing system provided by the utility model；
Wherein, reference numeral is as follows：
1st, digital-quantity input interface；2nd, D/A modular converters；3rd, power amplifier；4th, Signal-regulated kinase；5th, A/D is converted
Module；6th, protocol conversion module；7th, analog output interface circuit；8th, digital-quantity output interface；9th, display screen；10th, touchscreen keypad；
11st, industrial personal computer；12nd, simulation and numeral all-in-one calibration power source；13rd, standard digital electric energy meter；14th, master die analog quantity electric energy meter；15th, by mistake
Poor computing device.
Specific embodiment
The utility model embodiment provides a kind of simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude traces back
Source system solves current standard digital power source and is not used to the magnitude tracing of digital electricity meter and the skill that versatility is low
Art problem.
Goal of the invention, feature, advantage to enable the utility model is more apparent and understandable, below in conjunction with this
Attached drawing in utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, shows
So, the embodiments described below are only the utility model part of the embodiment, and not all embodiment.Based on this practicality
Embodiment in new, all other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of one embodiment in simulation and numeral all-in-one calibration power source, including：
Digital-quantity input interface 1, D/A modular converters 2, power amplifier 3, Signal-regulated kinase 4, A/D modular converters 5, protocol conversion
Module 6, analog output interface circuit 7 and digital-quantity output interface 8；
Digital-quantity input interface 1 and the input terminal of D/A modular converters 2 communicate to connect；
The output terminal of D/A modular converters 2 is communicated to connect with the input terminal of power amplifier 3；
The output terminal of power amplifier 3 respectively with 7 communication link of the input terminal of Signal-regulated kinase 4 and analog output interface circuit
It connects；
The output terminal of Signal-regulated kinase 4 is communicated to connect with the input terminal of A/D modular converters 5；
The output terminal of A/D modular converters 5 is communicated to connect with the input terminal of protocol conversion module 6；
The output terminal of protocol conversion module 6 is communicated to connect with digital-quantity output interface 8.
It should be noted that digital-quantity input interface 1 is used to receive the control instruction to simulation and numeral all-in-one calibration power source
Or carry out information exchange with human-computer interaction interface；
D/A modular converters 2 carry out digital-to-analogue conversion to default output signal, so as to export corresponding analog signal；
Power amplifier 3 forms voltage, electric current and the power signal of a standard after being amplified to analog signal；
Voltage, electric current and the power signal of standard can directly be exported by analog output interface circuit 7, can also pass through letter
Number conditioning module 4 is sampled, and is converted into directly input the small voltage signal of the 0-5V of A/D modular converters 5；
The small voltage signal of 0-5V is by 5 real-time sampling of A/D modular converters into digital signal；
It samples obtained digital signal and IEC61850 data frames is converted to by protocol conversion module 6, and pass through digital quantity
Output interface 8 exports；
Simulation and numeral all-in-one calibration power source in the present embodiment can be straight after D/A modular converters 2 and power amplifier 3
It connected analog output interface circuit 7 to verify traditional electric energy meter, can also be converted using Signal-regulated kinase 4, A/D
Digital electricity meter is verified by digital-quantity output interface 8 after module 5 and protocol conversion module 6, flexibility and versatility
It is high；Simultaneously as the signal that analog output interface circuit 7 and digital-quantity output interface 8 export is from identical power source, Ke Yitong
It crosses analog output interface circuit 7 and connects the relatively low traditional standard electric energy meter of uncertainty, digital-quantity output interface 8 connects criterion numeral
The form of word electric energy meter carries out magnitude tracing with the relatively low traditional standard electric energy meter of uncertainty to standard digital electric energy meter,
Solves the technical issues of current standard digital power source is not used to the magnitude tracing of digital electricity meter and low versatility.
It is above a kind of one embodiment in simulation and numeral all-in-one calibration power source provided by the utility model, is below this reality
With a kind of another embodiment in simulation and numeral all-in-one calibration power source of new offer.
Referring to Fig. 1, the utility model provides a kind of another embodiment in simulation and numeral all-in-one calibration power source, bag
It includes：
Digital-quantity input interface 1, D/A modular converters 2, power amplifier 3, Signal-regulated kinase 4, A/D modular converters 5,
Protocol conversion module 6, analog output interface circuit 7 and digital-quantity output interface 8；
Digital-quantity input interface 1 and the input terminal of D/A modular converters 2 communicate to connect；
The output terminal of D/A modular converters 2 is communicated to connect with the input terminal of power amplifier 3；
The output terminal of power amplifier 3 respectively with 7 communication link of the input terminal of Signal-regulated kinase 4 and analog output interface circuit
It connects；
The output terminal of Signal-regulated kinase 4 is communicated to connect with the input terminal of A/D modular converters 5；
The output terminal of A/D modular converters 5 is communicated to connect with the input terminal of protocol conversion module 6；
The output terminal of protocol conversion module 6 is communicated to connect with digital-quantity output interface 8.
It should be noted that IEC61850 is a universal standard for being used for substation network and system.It is to becoming
Equipment in power station is modeled, and defines common data form, identifier, behavior and control etc., and the standard provides one
The public communication standard of kind passes through the seamless connection that different system is realized in the standardization to equipment；
IEC61850 data frames are the data cells for meeting IEC61850 agreements, and in IEC61850 standards, electronic type is mutual
Sensor sends the voltage collected, current signal to combining unit, and voltage, current signal are packaged, pass through by combining unit
IEC61850 data frames are sent to digital electricity meter；
Calibration power source is a kind of voltage, current signal generating means.Calibration power source is mainly used for the verification of electric energy meter
And calibrating, wherein, voltage, the current signal of the output simulation of standard analog power source, and standard digital power source output number
Voltage, current signal；
Magnitude tracing is the continual relatively chain for having regulation uncertainty by one, makes measurement result or measurement mark
Standard can be connected with defined normative reference；The process, which typically refers to the units such as enterprise or laboratory, which actively to be found, has more
The measurement standard equipment that higher level's standard device of good uncertainty possesses it is calibrated；
The synchronous sampling technique that A/D modular converters 5 use can ensure the digital quantity and mould of analog-to-digital conversion module conversion output
Analog quantity is consistent, analog quantity and digital quantity synchronism output, that is, the analog voltage exported, analog current and simulation in the present embodiment
Power signal is remained exactly the same with the digital voltage, digital current and the digital power signal that export；
When the simulation and numeral all-in-one calibration power source in the present embodiment is used for the verification of digital electricity meter, simulation and numeral all-in-one mark
Quasi- power source sends IEC61850 data frames to standard digital electric energy meter and tested digital electricity meter, standard digital electric energy meter and by
Inspection digital electricity meter receives IEC61850 data frames, and accumulative electric energy simultaneously, and standard is received finally by error calculating device
Digital electricity meter and the Electric energy measurement of tested digital electricity meter output, and calculate the error of tested digital electricity meter.
Further, further include：Display screen 9, touchscreen keypad 10 and industrial personal computer 11；
Display screen 9 is provided with touchscreen keypad 10, and output terminal and 11 input terminal of industrial personal computer of display screen 9 communicate to connect；
The output terminal of industrial personal computer 11 is communicated to connect with digital-quantity input interface 1.
It should be noted that touchscreen keypad 10 can set simulation and numeral all-in-one calibration power source 12 by industrial personal computer 11
It puts, presets output waveform；
Display screen 9 can be used for the working condition in display simulation and numeral all-in-one calibration power source 12；
Further, digital-quantity input interface 1 is serial communication interface.
Further, serial communication interface is stated as RS232 communication interfaces.
Further, digital-quantity output interface 8 is fiber optic data communication interface.
Further, fiber optic data communication interface specifically includes：SC communication interfaces and/or ST communication interfaces and/or FC communications connect
Mouthful.
It should be noted that the simulation and numeral all-in-one calibration power source in the present embodiment is put by D/A modular converters 2 and power
Directly traditional electric energy meter can be verified by analog output interface circuit 7 after big device 3, it can also be using signal condition
Digital electricity meter is verified by digital-quantity output interface 8 after module 4, A/D modular converters 5 and protocol conversion module 6, spirit
Activity and versatility are high；Simultaneously as the signal that analog output interface circuit 7 and digital-quantity output interface 8 export is from identical work(
Rate source can connect the relatively low traditional standard electric energy meter of uncertainty, digital-quantity output interface by analog output interface circuit 7
The relatively low traditional standard electric energy meter of the form uncertainties of 8 connection standard digital electric energy meters 13 to standard digital electric energy meter into
Row magnitude tracing, solve current standard digital power source be not used to digital electricity meter magnitude tracing and versatility it is low
The technical issues of.
Referring to Fig. 2, the utility model provides a kind of one embodiment of standard digital electric energy meter magnitude tracing system,
Including：Standard digital electric energy meter 13, master die analog quantity electric energy meter 14, error calculating device 15 and any one above-mentioned modulus one
Body calibration power source 12；
The uncertainty of master die analog quantity electric energy meter 14 is less than the uncertainty of standard digital electric energy meter 13；
The digital-quantity output interface 8 in simulation and numeral all-in-one calibration power source 12 communicates with the input terminal of standard digital electric energy meter 13
Connection；
The analog output interface circuit 7 in simulation and numeral all-in-one calibration power source 12 and the input terminal of master die analog quantity electric energy meter 14 lead to
Letter connection；
The output terminal of standard digital electric energy meter 13 is communicated to connect with the first input end of error calculating device 15；
The output terminal of master die analog quantity electric energy meter 14 is communicated to connect with the second input terminal of error calculating device 15.
It should be noted that specific magnitude tracing standard is lacked to pure digi-tal amount equipment both at home and abroad at present, and to mould
Analog quantity traditional electric energy meter as input has perfect magnitude tracing system；
Therefore the standard tradition electric energy meter of higher precision grade can be used to carry out magnitude to standard digital electric energy meter 13 to trace back
Source；
The digital-quantity output interface 8 in simulation and numeral all-in-one calibration power source 12 and standard digital electric energy meter 13 in the present embodiment
Input terminal communicates to connect；
The analog output interface circuit 7 in simulation and numeral all-in-one calibration power source 12 and the input terminal of master die analog quantity electric energy meter 14 lead to
Letter connection；
Simulation and numeral all-in-one calibration power source 12 exports IEC61850 data frames and standard analog electricity as criterion numeral respectively
The input of word electric energy meter 13 and master die analog quantity electric energy meter 14；
Error calculating device 15 receives the electrical energy measurement that standard digital electric energy meter 13 and master die analog quantity electric energy meter 14 export
As a result, and calculate the error of standard digital electric energy meter 13, so as to fulfill the magnitude tracing of standard digital electric energy meter 13.
The relatively low traditional standard electric energy meter of uncertainty, digital quantity are connected with analog output interface circuit 7 in the present embodiment
Output interface 8 connects the relatively low traditional standard electric energy meter of form uncertainty of standard digital electric energy meter 13 to standard digital
Electric energy meter 13 carries out magnitude tracing, solves the magnitude tracing that current standard digital power source is not used to digital electricity meter
Technical problem.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and module may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system and device can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the module, only
Only a kind of division of logic function can have other dividing mode in actual implementation, such as multiple module or components can be tied
It closes or is desirably integrated into another system or some features can be ignored or does not perform.It is another, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or module
Letter connection can be electrical, machinery or other forms.
The module illustrated as separating component may or may not be it is physically separate, can be according to reality
Border needs to select some or all of module therein to realize the purpose of this embodiment scheme.
In addition, each function module in each embodiment of the utility model can be integrated in a processing module,
Can be that modules are individually physically present, can also two or more modules be integrated in a module.
The above, above example are only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng
The utility model is described in detail according to previous embodiment, it will be understood by those of ordinary skill in the art that：It is still
It can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is equally replaced
It changes；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the utility model technical solution
Spirit and scope.
Claims (7)
1. a kind of simulation and numeral all-in-one calibration power source, which is characterized in that including：Digital-quantity input interface, D/A modular converters, work(
Rate amplifier, Signal-regulated kinase, A/D modular converters, protocol conversion module, analog output interface circuit and digital output connect
Mouthful；
The digital-quantity input interface and the input terminal of the D/A modular converters communicate to connect；
The output terminal of the D/A modular converters is communicated to connect with the input terminal of the power amplifier；
The output terminal of the power amplifier respectively with the input terminal of the Signal-regulated kinase and the analog output interface circuit
Communication connection；
The output terminal of the Signal-regulated kinase and the input terminal of the A/D modular converters communicate to connect；
The output terminal of the A/D modular converters is communicated to connect with the input terminal of the protocol conversion module；
The output terminal of the protocol conversion module is communicated to connect with the digital-quantity output interface.
2. a kind of simulation and numeral all-in-one calibration power source according to claim 1, which is characterized in that further include：Display screen touches
Screen keyboard and industrial personal computer；
The display screen is provided with touchscreen keypad, and the output terminal of the display screen is communicated to connect with the industrial personal computer input terminal；
The output terminal of the industrial personal computer is communicated to connect with the digital-quantity input interface.
3. a kind of simulation and numeral all-in-one calibration power source according to claim 1, which is characterized in that the digital quantity input connects
Mouth is serial communication interface.
A kind of 4. simulation and numeral all-in-one calibration power source according to claim 3, which is characterized in that the serial communication interface
For RS232 communication interfaces.
5. a kind of simulation and numeral all-in-one calibration power source according to claim 1, which is characterized in that the digital output connects
Mouth is fiber optic data communication interface.
A kind of 6. simulation and numeral all-in-one calibration power source according to claim 5, which is characterized in that the fiber optic data communication interface
It specifically includes：One or more in SC communication interfaces, ST communication interfaces and FC communication interfaces.
7. a kind of standard digital electric energy meter magnitude tracing system, including：Standard digital electric energy meter, master die analog quantity electric energy meter miss
Simulation and numeral all-in-one calibration power source described in any one in poor computing device and claim 1 to 6；
The uncertainty of the master die analog quantity electric energy meter is less than the uncertainty of the standard digital electric energy meter；
The digital-quantity output interface in the simulation and numeral all-in-one calibration power source communicates with the input terminal of the standard digital electric energy meter
Connection；
The analog output interface circuit in the simulation and numeral all-in-one calibration power source and the input terminal of the master die analog quantity electric energy meter lead to
Letter connection；
The output terminal of the standard digital electric energy meter is communicated to connect with the first input end of the error calculating device；
The output terminal of the master die analog quantity electric energy meter is communicated to connect with the second input terminal of the error calculating device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479023A (en) * | 2017-10-13 | 2017-12-15 | 广东电网有限责任公司电力科学研究院 | Simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system |
| CN112881968A (en) * | 2021-01-12 | 2021-06-01 | 国网上海市电力公司 | Ammeter calibrating device and method |
-
2017
- 2017-10-13 CN CN201721320344.6U patent/CN207440273U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479023A (en) * | 2017-10-13 | 2017-12-15 | 广东电网有限责任公司电力科学研究院 | Simulation and numeral all-in-one calibration power source and standard digital electric energy meter magnitude tracing system |
| CN112881968A (en) * | 2021-01-12 | 2021-06-01 | 国网上海市电力公司 | Ammeter calibrating device and method |
| CN112881968B (en) * | 2021-01-12 | 2023-03-07 | 国网上海市电力公司 | Ammeter calibrating device and method |
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