CN206258569U - The nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter - Google Patents
The nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter Download PDFInfo
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- CN206258569U CN206258569U CN201621218222.1U CN201621218222U CN206258569U CN 206258569 U CN206258569 U CN 206258569U CN 201621218222 U CN201621218222 U CN 201621218222U CN 206258569 U CN206258569 U CN 206258569U
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- 238000005259 measurement Methods 0.000 title claims abstract description 55
- 230000000052 comparative effect Effects 0.000 claims abstract description 25
- 230000006870 function Effects 0.000 claims description 43
- 239000000835 fiber Substances 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
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Abstract
The utility model provides a kind of nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter, including：First function signal generator, second function signal generator, standard digital electric energy meter and pulse comparative device, wherein：First function signal generator is connected with measured number electric energy meter and second function signal generator, and secondary signal generator is connected with standard digital electric energy meter, and pulse comparative device is connected with measured number electric energy meter and standard digital electric energy meter；First function signal generator generation current digital signal, voltage digital signal and theoretical power (horse-power)；Second function signal generator outputting standard current digital signal and normal voltage data signal；Standard digital electric energy meter outputting standard active energy pulse；Pulse comparative device compares tested active energy pulse and standard active energy pulse, exports the nonlinear-load measuring accuracy of measured number electric energy meter.The utility model can realize the measurement of the measuring accuracy under nonlinear-load to digitalized electrical energy meter.
Description
Technical field
The utility model is related to digitalized electrical energy meter measuring accuracy testing field, in particular it relates to a kind of digitalized electric energy
The nonlinear-load measuring accuracy measurement apparatus of table.
Background technology
With the development of intelligent grid, intelligent substation of the framework in IEC61850 standard bases is largely built, and is based on
The digitalized electrical energy meter of fiber optic Ethernet is also widely applied in intelligent substation.Traditional electric energy meter is different from, is digitized
Electric energy meter does not have analog quantity sampling section, but directly receives the incoming IEC61850-SMV of combining unit by fiber optic Ethernet
Digitized sampling value message, therefore, traditional testing device for energy meter cannot also be applied to digitalized electrical energy meter, it is necessary to use number
The special test stage body of word electric energy meter.And the application of a large amount of power electronics industrial loads so that network load gradually present with
Time dynamic fluctuation, or even the characteristics of impact.Because digitalized electrical energy meter special test stage body can only measure digitalized electric energy
Measuring accuracy of the table under steady state load, its measuring accuracy under nonlinear-load cannot be measured so that intelligent substation is closed
The measuring accuracy of mouth is influenceed increasing by dynamic, impact load.It is therefore desirable to have special device, to digitlization
Measuring accuracy of the electric energy meter under nonlinear-load is measured.
The measurement apparatus of measuring accuracy mainly include under the related electric energy meter nonlinear-load announced at present：
1st, using programmable unit and silicon controlled control circuit, generation three phase dynamic power is conveyed to electric energy meter, while than
To the active pulse error (application number of electric energy meter output：201310659769.X, publication number：103630871A, publication date：
2014.03.12, applicant country：China).This measurement apparatus itself do not generate voltage and current signal, but by controllable silicon according to
Programmed logic, the voltage for changing external power source input reaches the purpose of output nonlinear load with current signal shape, together
When receive electric energy meter input active energy pulse, carry out measuring accuracy judgement.
2nd, by active power signal source unit, the tested electric energy meter of power source signal input of Production development modulation is carried out
Electric energy meter nonlinear-load tests (application number：201410613009.X, publication number：104345294A, publication date：2015-2-
11, applicant country：China).This device be in the integrated oblique line power source of device interior and index power source unit, directly it is defeated
Go out the voltage and current fluctuation signal for modulating, while receiving the electrical energy pulse that tested electric energy meter is returned, carry out active energy essence
Degree judges.
Said apparatus carry out nonlinear-load metering performance evaluation and test mainly for the electric energy meter that traditional analog amount is input into, and nothing
Method is applied to digitize the digitalized electrical energy meter of message input.Still not having at present being capable of independent test digitalized electrical energy meter
Nonlinear-load measuring accuracy measurement apparatus.
Utility model content
The main purpose of the utility model embodiment is the nonlinear-load metering essence for providing a kind of digitalized electrical energy meter
Degree measurement apparatus, are used to measure the nonlinear-load measuring accuracy of digitalized electrical energy meter.
To achieve these goals, the utility model embodiment provides a kind of nonlinear-load metering of digitalized electrical energy meter
Accuracy measuring device, including：First function signal generator, second function signal generator, standard digital electric energy meter and arteries and veins
Comparative device is rushed, wherein：First function signal generator is connected with measured number electric energy meter and second function signal generator, the
Binary signal generator is connected with standard digital electric energy meter, and pulse comparative device is electric with measured number electric energy meter and standard digitalization
Can table connection；First function signal generator, is used for：Generate the nonlinear-load measuring accuracy for measured number electric energy meter
The current digital signal of measurement, voltage digital signal and theoretical power (horse-power), to measured number electric energy meter output current numeral signal
And voltage digital signal, export theoretical power (horse-power) to second function signal generator；Second function signal generator, for according to reason
By power, output mean power is the normalized current data signal and normal voltage data signal of theoretical power (horse-power)；Standard digital
Electric energy meter, for according to normalized current data signal and normal voltage data signal, outputting standard active energy pulse；Pulse ratio
To device, it is used for：Receive the tested active electricity that measured number electric energy meter is exported according to current digital signal and voltage digital signal
Energy impulse, receives the standard active energy pulse of standard digital electric energy meter output, compares tested active energy pulse and standard
Active energy pulse, exports the nonlinear-load measuring accuracy of measured number electric energy meter.
Wherein in a kind of embodiment, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter also include：Point
Not with first function signal generator, measured number electric energy meter, second function signal generator, standard digital electric energy meter and
The memory of pulse comparative device connection, for storing current digital signal, voltage digital signal, theoretical power (horse-power), tested active electricity
The non-thread of energy impulse, normalized current data signal, normal voltage data signal, the pulse of standard active energy and digitalized electrical energy meter
Property load measuring accuracy.
Wherein in a kind of embodiment, memory includes：Ferroelectric memory and/or flash memory.
Wherein in a kind of embodiment, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter also include：With
The expanding communication device of pulse comparative device connection, for the nonlinear-load measuring accuracy of transmitting digitized electric energy meter.
Wherein in a kind of embodiment, expanding communication device includes：RS485 interfaces, RS232 interfaces and RJ485 interfaces
One of them is combined.
Wherein in a kind of embodiment, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter also include：Point
The ethernet controller not being connected with first function signal generator and measured number electric energy meter, for transmitting current digital letter
Number and voltage digital signal to measured number electric energy meter.
Wherein in a kind of embodiment, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter also include：Point
Multiple optical fiber interfaces for not being connected with ethernet controller, multiple RJ45 interfaces and multiple single-mode fiber interfaces one of them or
Any combination, for transmitting current digital signal and voltage digital signal to measured number electric energy meter.
Wherein in a kind of embodiment, optical fiber interface is 10/100BASE-FX optical fiber interfaces.
Wherein in a kind of embodiment, single-mode fiber interface is FT3 agreement single-mode fiber interfaces.
Wherein in a kind of embodiment, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter also include：With
The display of pulse comparative device connection, for the nonlinear-load measuring accuracy of displaying digitized electric energy meter.
The nonlinear-load measuring accuracy measurement apparatus of the digitalized electrical energy meter of the utility model embodiment, first function letter
Number generator generates current digital signal, the voltage number of the nonlinear-load measuring accuracy measurement for measured number electric energy meter
Word signal and theoretical power (horse-power), to measured number electric energy meter output current numeral signal and voltage digital signal, to second function
Signal generator exports theoretical power (horse-power)；Second function signal generator, according to theoretical power (horse-power), output mean power is theoretical power (horse-power)
Normalized current data signal and normal voltage data signal；Standard digital electric energy meter, according to normalized current data signal and
Normal voltage data signal, outputting standard active energy pulse；Pulse comparative device, comparing tested active energy pulse and standard has
Work(electrical energy pulse, exports the nonlinear-load measuring accuracy of measured number electric energy meter, so as to realize existing digitalized electrical energy meter
The measurement of the measuring accuracy under nonlinear-load.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
The accompanying drawing to be used needed for description is briefly described, it should be apparent that, drawings in the following description are only new this practicality
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structure of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
Block diagram；
Fig. 2 is the first of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment；
Fig. 3 is the second of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment；
Fig. 4 is the 3 of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment；
Fig. 5 is the 4 of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
In view of still do not have the nonlinear-load measuring accuracy measurement apparatus for being capable of independent test digitalized electrical energy meter at present,
The utility model embodiment provides a kind of nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter, first function signal
Generator generates current digital signal, the voltage digital of the nonlinear-load measuring accuracy measurement for measured number electric energy meter
Signal and theoretical power (horse-power), to measured number electric energy meter output current numeral signal and voltage digital signal, believe to second function
Number generator output theoretical power (horse-power)；Second function signal generator, according to theoretical power (horse-power), output mean power is theoretical power (horse-power)
Normalized current data signal and normal voltage data signal；Standard digital electric energy meter, according to normalized current data signal and mark
Quasi- voltage digital signal, outputting standard active energy pulse；Pulse comparative device, compares tested active energy pulse and standard is active
Electrical energy pulse, exports the nonlinear-load measuring accuracy of measured number electric energy meter, so as to realize to digitalized electrical energy meter non-
The measurement of the measuring accuracy under linear load.The utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the structure of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
Block diagram.As shown in figure 1, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter include：First function signal occurs
Device 1, second function signal generator 3, standard digital electric energy meter 4 and pulse comparative device 5, wherein：First function signal occurs
Device 1 is connected with measured number electric energy meter 2 and second function signal generator 3, and secondary signal generator 3 is electric with standard digitalization
Energy table 4 is connected, and pulse comparative device 5 is connected with measured number electric energy meter 2 and standard digital electric energy meter 4；First function signal
Generator 1, is used for：Generate for measured number electric energy meter nonlinear-load measuring accuracy measurement current digital signal,
Voltage digital signal and theoretical power (horse-power), to the output current of measured number electric energy meter 2 numeral signal and voltage digital signal, to the
Two function signal generator 3 exports theoretical power (horse-power)；Second function signal generator 3, for according to theoretical power (horse-power), exporting average work(
Rate is the normalized current data signal and normal voltage data signal of theoretical power (horse-power)；Standard digital electric energy meter 4, for according to mark
Quasi- current digital signal and normal voltage data signal, outputting standard active energy pulse；Pulse comparative device 5, is used for：Receive quilt
The tested active energy pulse that digitalized electrical energy meter 2 is exported according to current digital signal and voltage digital signal is surveyed, standard is received
The standard active energy pulse of the output of digitalized electrical energy meter 4, compares tested active energy pulse and standard active energy pulse, defeated
Go out the nonlinear-load measuring accuracy of measured number electric energy meter.
During specific implementation, first function signal generator 1 obtains current digital signal, voltage according to the arbitrary function of generation
Data signal and theoretical power (horse-power)；According to current digital signal and voltage digital signal, output is tested to be had measured number electric energy meter 2
Work(electrical energy pulse；Second function signal generator 3 receive first function signal generator 1 output theoretical power (horse-power) after, according to
Three-phase normalized current data signal and three-phase normal voltage data signal, its mean power and theoretical power (horse-power) are generated according to theoretical power (horse-power)
It is equal；Standard digital electric energy meter 4 is according to three-phase normalized current data signal and three-phase normal voltage data signal, outputting standard
Active energy pulse；Pulse comparative device 5 receives tested active energy pulse and standard active energy pulse, according to the active electricity of standard
Energy impulse obtains the standard active energy umber of pulse in a pulse period, and a pulse period is obtained according to tested active energy pulse
Interior tested active energy umber of pulse, further obtains the nonlinear-load measuring accuracy of measured number electric energy meter.
Fig. 2 is the first of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment.As shown in Fig. 2 the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter can also be wrapped
Include：Respectively with first function signal generator 1, measured number electric energy meter 2, second function signal generator 3, standard digital
Electric energy meter 4 and pulse comparative device 5 connection memory 6, for store current digital signal, voltage digital signal, theoretical power (horse-power),
The pulse of tested active energy, normalized current data signal, normal voltage data signal, the pulse of standard active energy and digitlization electricity
The nonlinear-load measuring accuracy of energy table.Wherein, memory 6 includes：Ferroelectric memory and/or flash memory.
Fig. 3 is the second of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment.As shown in figure 3, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter can also be wrapped
Include：The expanding communication device 7 being connected with pulse comparative device 5, for the nonlinear-load measuring accuracy of transmitting digitized electric energy meter.
During specific implementation, expanding communication device 7 can include：RS485 interfaces, one of RS232 interfaces and RJ485 interfaces or appoint
Meaning combination.
Fig. 4 is the 3 of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment.As shown in figure 4, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter can also be wrapped
Include：The ethernet controller 8 being connected with first function signal generator 1 and measured number electric energy meter 2 respectively, for transmitting electricity
Streaming digital signal and voltage digital signal are to measured number electric energy meter 2.In embodiment, can also include：Respectively with Ethernet
Multiple optical fiber interfaces of the connection of controller 8, multiple RJ45 interfaces and multiple single-mode fiber interface one of them or be combined,
For transmitting current digital signal and voltage digital signal to measured number electric energy meter 2.Wherein, optical fiber interface can be 10/
100BASE-FX optical fiber interfaces, single-mode fiber interface can be FT3 agreement single-mode fiber interfaces.
Fig. 5 is the 4 of the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter in the utility model embodiment
The structured flowchart of embodiment.As shown in figure 5, the nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter can also be wrapped
Include：The display 9 being connected with pulse comparative device 5, for the nonlinear-load measuring accuracy of displaying digitized electric energy meter.Wherein,
Display 9 can be liquid crystal display.
During specific implementation, by the driving of ethernet controller 8, and multiple optical fiber interfaces, multiple RJ45 interfaces and many
One of them or any combination of individual single-mode fiber interface, parallel output current digital signal and voltage digital signal are to measurand
Word electric energy meter, digitalized electrical energy meter that can be simultaneously to many different interface types is measured, and improves measurement efficiency.Arteries and veins
Comparative device 5 is rushed after the nonlinear-load measuring accuracy for obtaining measured number electric energy meter, this is counted by expanding communication device 7
Accuracy of measurement is exported to smart machines such as computer, mobile phones, it is also possible to is exported the measuring accuracy to display 9 and is shown.
To sum up, the nonlinear-load measuring accuracy measurement apparatus of the digitalized electrical energy meter of the utility model embodiment, first
Function signal generator generate for measured number electric energy meter nonlinear-load measuring accuracy measurement current digital signal,
Voltage digital signal and theoretical power (horse-power), to measured number electric energy meter output current numeral signal and voltage digital signal, to the
Two function signal generators export theoretical power (horse-power)；Second function signal generator, according to theoretical power (horse-power), output mean power is reason
By the normalized current data signal and normal voltage data signal of power；Standard digital electric energy meter, according to normalized current numeral
Signal and normal voltage data signal, outputting standard active energy pulse；Pulse comparative device, compare tested active energy pulse and
Standard active energy pulse, exports the nonlinear-load measuring accuracy of measured number electric energy meter, so as to realize to digitlization electricity
The measurement of measuring accuracy of the energy table under nonlinear-load.The utility model can also transmit current digital by multichannel interface
, to measured number electric energy meter, digitalized electrical energy meter that can be simultaneously to many different interface types enters for signal and voltage digital signal
Row measurement, improves measurement efficiency.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the utility model, is not used to limit this
The protection domain of utility model, it is all within spirit of the present utility model and principle, any modification for being made, equivalent, change
Enter, should be included within protection domain of the present utility model.
Claims (10)
1. nonlinear-load measuring accuracy measurement apparatus of a kind of digitalized electrical energy meter, it is characterised in that including：First function is believed
Number generator (1), second function signal generator (3), standard digital electric energy meter (4) and pulse comparative device (5), wherein：
First function signal generator (1) is connected with measured number electric energy meter (2) and second function signal generator (3), the
Binary signal generator (3) is connected with standard digital electric energy meter (4), pulse comparative device (5) and measured number electric energy meter (2) and
Standard digital electric energy meter (4) is connected；
First function signal generator (1), is used for：The nonlinear-load measuring accuracy generated for measured number electric energy meter is surveyed
The current digital signal of amount, voltage digital signal and theoretical power (horse-power), to measured number electric energy meter (2) output current numeral signal
And voltage digital signal, export theoretical power (horse-power) to second function signal generator (3)；
Second function signal generator (3), for according to theoretical power (horse-power), output mean power to be the standard electric fluxion of theoretical power (horse-power)
Word signal and normal voltage data signal；
Standard digital electric energy meter (4), for according to normalized current data signal and normal voltage data signal, outputting standard to have
Work(electrical energy pulse；
Pulse comparative device (5), is used for：Measured number electric energy meter (2) is received according to current digital signal and voltage digital signal
The tested active energy pulse of output, receives the standard active energy pulse of standard digital electric energy meter (4) output, compares tested
Active energy pulse and standard active energy pulse, export the nonlinear-load measuring accuracy of measured number electric energy meter.
2. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 1, it is characterised in that
Also include：
Respectively with first function signal generator (1), measured number electric energy meter (2), second function signal generator (3), mark
Quasi- digitalized electrical energy meter (4) and the memory (6) of pulse comparative device (5) connection, for storing current digital signal, voltage digital
Signal, theoretical power (horse-power), the pulse of tested active energy, normalized current data signal, normal voltage data signal, standard active energy
Pulse and the nonlinear-load measuring accuracy of digitalized electrical energy meter.
3. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 2, it is characterised in that
Memory (6) includes：Ferroelectric memory and/or flash memory.
4. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 1, it is characterised in that
Also include：The expanding communication device (7) being connected with pulse comparative device (5), for the nonlinear-load of transmitting digitized electric energy meter
Measuring accuracy.
5. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 4, it is characterised in that
Expanding communication device (7) includes：RS485 interfaces, one of RS232 interfaces and RJ485 interfaces or any combination.
6. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 1, it is characterised in that
Also include：
The ethernet controller (8) being connected with first function signal generator (1) and measured number electric energy meter (2) respectively, uses
In transmission current digital signal and voltage digital signal to measured number electric energy meter (2).
7. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 6, it is characterised in that
Also include：
Multiple optical fiber interfaces, multiple RJ45 interfaces and the multiple single-mode fiber interface being connected with ethernet controller (8) respectively
One of them is combined, for transmitting current digital signal and voltage digital signal to measured number electric energy meter (2).
8. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 7, it is characterised in that
Optical fiber interface is 10/100BASE-FX optical fiber interfaces.
9. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 7, it is characterised in that
Single-mode fiber interface is FT3 agreement single-mode fiber interfaces.
10. nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter according to claim 1, its feature exists
In also including：The display (9) being connected with pulse comparative device (5), for the nonlinear-load metering of displaying digitized electric energy meter
Precision.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621218222.1U CN206258569U (en) | 2016-11-11 | 2016-11-11 | The nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter |
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| CN201621218222.1U CN206258569U (en) | 2016-11-11 | 2016-11-11 | The nonlinear-load measuring accuracy measurement apparatus of digitalized electrical energy meter |
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2016
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