CN107561473A - A kind of standard digital electric energy meter - Google Patents
A kind of standard digital electric energy meter Download PDFInfo
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- CN107561473A CN107561473A CN201710955089.0A CN201710955089A CN107561473A CN 107561473 A CN107561473 A CN 107561473A CN 201710955089 A CN201710955089 A CN 201710955089A CN 107561473 A CN107561473 A CN 107561473A
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Abstract
The embodiment of the invention discloses a kind of standard digital electric energy meter.Standard digital electric energy meter in the present invention can be forwarded into multichannel IEC61850 data frames by the IEC61850 data frames with voltage and current signal all the way that Ethernet output interface and multi-pass interchanger arrive Ethernet input interface, and it is sent respectively to multiple tested digital electricity meters, the electric flux each measured is transferred in standard digital electric energy meter by multiple tested digital electricity meters by multiple electrical energy pulse input modules, and in digital signal processor compared with the electric flux that standard digital electric energy meter measures, complete verification, so the standard digital electric energy meter in the present invention can verify to more tested digital electricity meters simultaneously, improve operating efficiency, solves the low technical problem of current standard digital electric energy meter operating efficiency.
Description
Technical field
The present invention relates to power instrument field, more particularly to a kind of standard digital electric energy meter.
Background technology
IEC61850 is a universal standard for being used for substation network and system.It enters to the equipment in transformer station
Row modeling, and define common data form, identifier, behavior and control etc..The standard provides a kind of public communication mark
Standard, the seamless connection of different system is realized by the standardization to equipment.
With the popularization of the digital transformer substation based on IEC61850 standards in China, digital electricity meter is in transformer station
In application it is increasingly extensive.According to the regulation of China's measurement Law, the Electric Energy Tariff Point Metering Device for trade settlement must receive
Compulsory verification.At present digital electricity meter calibrating and verification mainly realized by standard digital electric energy meter.Based on standard digital electricity
Can the digital electricity meter checkschema of table be：The voltage of digital power source output, current signal are pressed into IEC61850 standard framings
It is sent to tested digital electricity meter and standard digital electric energy meter；Error Calculator receives tested digital electricity meter and criterion numeral simultaneously
The electrical energy pulse of word electric energy meter output, and electrical energy pulse is compared, so as to calculate the error of tested digital electricity meter.
But when carrying out tested digital electricity meter verification using current standard digital electric energy meter, it can only once verify one
Tested digital electricity meter, operating efficiency is relatively low, if can be simultaneously to more tested digital electricity meters using calibration console for electric energy meter
Verified, but calibration console for electric energy meter volume is big, transport difficult and cost height.Therefore, it result in current standard digital electricity
Can the low technical problem of table operating efficiency.
The content of the invention
The invention provides a kind of standard digital electric energy meter, and it is low to solve current standard digital electric energy meter operating efficiency
Technical problem.
The invention provides a kind of standard digital electric energy meter, including：Digital signal processing module, multi-pass exchange mechanical, electrical
Energy impulse input module, electrical energy pulse output module, Ethernet input interface and Ethernet output interface；
The digital signal processing module specifically includes：Power supply submodule and digital signal processor；
The output end of the power supply submodule electrically connects with the receiving end of the digital signal processor；
The first input end of the Ethernet input interface and the digital signal processor communicates to connect；
The Ethernet output interface is connected with the Ethernet input interface communication；
The multi-pass interchanger is connected with the Ethernet output interface communication；
Second input of the electrical energy pulse input module and the digital signal processor communicates to connect, the electric energy
The quantity of pulse input module is two or more；
First output end of the electrical energy pulse output module and the digital signal processor communicates to connect.
Preferably, in addition to：Industrial computer and touch-screen；
The output end of digital signal processor second communicates to connect with the industrial computer；
The industrial computer connects with the touch panel communication.
Preferably, the digital signal processing module also includes：Sub-module stored；
The sub-module stored and the 3rd output end of the digital signal processor communicate to connect.
Preferably, the sub-module stored specifically includes：SDRAM memory and/or flash chip.
Preferably, the digital signal processor is specially ADSP BF531 signal processors.
Preferably, the power supply submodule specifically includes：Power management chip TLV1117-33 and power management chip
TLV1117A。
Preferably, first Ethernet interface specifically includes：ST communication interfaces and/or SC communication interfaces and/or LC lead to
Believe interface and/or RJ45 communication interfaces.
Preferably, second Ethernet interface specifically includes：ST communication interfaces and/or SC communication interfaces and/or LC lead to
Believe interface and/or RJ45 communication interfaces.
Preferably, the output end of digital signal processor second is communicated to connect by serial line interface and the industrial computer.
Preferably, the serial line interface is RS232 communication interfaces.
As can be seen from the above technical solutions, the present invention has advantages below：
The invention provides a kind of standard digital electric energy meter, including：Digital signal processing module, multi-pass exchange mechanical, electrical
Energy impulse input module, electrical energy pulse output module, Ethernet input interface and Ethernet output interface；At the data signal
Reason module specifically includes：Power supply submodule and digital signal processor；The output end of the power supply submodule is believed with the numeral
The receiving end electrical connection of number processor；The Ethernet input interface communicates with the first input end of the digital signal processor
Connection；The Ethernet output interface is connected with the Ethernet input interface communication；The multi-pass interchanger with it is described with
Too net output interface communicates to connect；The electrical energy pulse input module communicates with the second input of the digital signal processor
Connection, the quantity of the electrical energy pulse input module is two or more；The electrical energy pulse output module and the number
The first output end communication connection of word signal processor.
Standard digital electric energy meter in the present invention can be defeated by Ethernet by Ethernet output interface and multi-pass interchanger
The IEC61850 data frames with voltage and current signal all the way that incoming interface receives are forwarded into multichannel IEC61850 data frames,
And multiple tested digital electricity meters are sent respectively to, the electric flux each measured is passed through multiple electricity by multiple tested digital electricity meters
Energy impulse input module is transferred in standard digital electric energy meter, and is measured in digital signal processor with standard digital electric energy meter
Electric flux be compared, verification is completed, so standard digital electric energy meter in the present invention can be simultaneously to more tested numeral electricity
Energy table is verified, and improves operating efficiency, solves the low technical problem of current standard digital electric energy meter operating efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of structural representation of one embodiment of standard digital electric energy meter provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of digital signal processing module provided in an embodiment of the present invention；
Fig. 3 is a kind of company of standard digital electric energy meter work hours word electrical energy meter calibration system provided in an embodiment of the present invention
Connect relation schematic diagram；
Wherein, reference is as follows：
1st, digital signal processing module；2nd, multi-pass interchanger；3rd, electrical energy pulse input module；4th, electrical energy pulse output mould
Block；5th, Ethernet input interface；6th, Ethernet output interface；7th, standard digital power source；8th, it is detected digital electricity meter 1；9、
Tested digital electricity meter 2；10th, it is detected digital electricity meter 3；11st, digital signal processor；12nd, power supply submodule；13rd, deposit
Store up submodule；14th, industrial computer；15th, touch-screen.
Embodiment
The embodiments of the invention provide a kind of standard digital electric energy meter, solves current standard digital electric energy meter work effect
The low technical problem of rate.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Referring to Fig. 1, the invention provides a kind of one embodiment of standard digital electric energy meter, including：At data signal
Manage module 1, multi-pass interchanger 2, electrical energy pulse input module 3, electrical energy pulse output module 4, Ethernet input interface 5 and with
Too net output interface 6；
Digital signal processing module 1 specifically includes：Power supply submodule 12 and digital signal processor 11；
The output end of power supply submodule 12 electrically connects with the receiving end of digital signal processor 11；
The first input end of Ethernet input interface 5 and digital signal processor 11 communicates to connect；
Ethernet output interface 6 communicates to connect with Ethernet input interface 5；
Multi-pass interchanger 2 communicates to connect with Ethernet output interface 6；
Second input of electrical energy pulse input module 3 and digital signal processor 11 communicates to connect, electrical energy pulse input
The quantity of module 3 is two or more；
First output end of electrical energy pulse output module 4 and digital signal processor 11 communicates to connect.
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, the seamless connection of different system is realized by 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 packed, passed through by combining unit
IEC61850 data frames are sent to digital electricity meter；
It is data signal that the first input end of above-mentioned digital signal processor, the second input and first output end etc., which are not,
Corresponding pin on processor, one or the reference of a kind of input simply pair being connected with respective modules or device, subsequently
The third and fourth grade generation is only referred to herein, be not necessarily referring to and digital identical pin；
Standard digital electric energy meter in the present embodiment can use as the standard digital electric energy meter of routine, can also conduct
The standard digital electric energy meter that more tested digital electricity meters can be verified simultaneously uses；
When the standard digital electric energy meter as routine, without using Ethernet output interface 6 and multi-pass interchanger 2,
It is consistent with the standard digital electric energy meter application method of routine, IEC61850 data frames are inputted by Ethernet input interface 5, incite somebody to action this
The energy data that standard digital electric energy meter measures is exported by electrical energy pulse output module 4；
When as the standard digital electric energy meter that can verify more tested digital electricity meters simultaneously, connect by Ethernet input
Mouth 5 inputs IEC61850 data frames, and is forwarded by Ethernet output interface 6 and multi-pass interchanger 2, and this standard numeral electricity
Energy table has at least two electrical energy pulse input modules 3, the electrical energy pulse of more tested digital electricity meters can be inputted, in numeral
Error calculation is carried out in signal processor 11, tested digital electricity meter is verified；
Standard digital electric energy meter in the present embodiment can be by Ethernet output interface 6 and multi-pass interchanger 2 by ether
The IEC61850 data frames with voltage and current signal all the way that net input interface 5 receives are forwarded into multichannel IEC61850 numbers
According to frame, and multiple electric energy meters are sent respectively to, multiple electric energy meters input the electric flux each measured by multiple electrical energy pulses
Module 3 is transferred in standard digital electric energy meter, and the electric energy measured in digital signal processor 11 with standard digital electric energy meter
Amount is compared, and completes verification, so the standard digital electric energy meter in the present invention can verify to more electric energy meters simultaneously, is carried
High operating efficiency, solves the low technical problem of current standard digital electric energy meter operating efficiency.
It is above a kind of one embodiment of standard digital electric energy meter provided by the invention, is below provided by the invention one
Another embodiment of kind standard digital electric energy meter.
Fig. 1, Fig. 2 and Fig. 3 are referred to, the invention provides a kind of another embodiment of standard digital electric energy meter, including：
Digital signal processing module 1, multi-pass interchanger 2, electrical energy pulse input module 3, electrical energy pulse output module 4, Ethernet are defeated
Incoming interface 5 and Ethernet output interface 6；
Digital signal processing module 1 specifically includes：Power supply submodule 12 and digital signal processor 11；
The output end of power supply submodule 12 electrically connects with the receiving end of digital signal processor 11；
The first input end of Ethernet input interface 5 and digital signal processor 11 communicates to connect；
Ethernet output interface 6 communicates to connect with Ethernet input interface 5；
Multi-pass interchanger 2 communicates to connect with Ethernet output interface 6；
Second input of electrical energy pulse input module 3 and digital signal processor 11 communicates to connect, electrical energy pulse input
The quantity of module 3 is two or more；
First output end of electrical energy pulse output module 4 and digital signal processor 11 communicates to connect.
It should be noted that data processing module is core with digital signal processor 11, system control, industrial computer are completed
The functions such as 14 Control on Communication, Electric energy accumulation calculating, the conversion of IEC61850 standard communication protocols and error calculation；
Multi-pass interchanger 2 will can all the way carry voltage, the IEC61850 data frames of current signal are forwarded into multichannel
IEC61850 data frames, and it is sent to multiple tested digital electricity meters.
Further, in addition to：Industrial computer 14 and touch-screen 15；
The output end of digital signal processor 11 second communicates to connect with industrial computer 14；
Industrial computer 14 and touch-screen 15 communicate to connect.
It should be noted that being advantageous to man-machine interaction after adding industrial computer 14 and touch-screen 15, digital electricity meter is detected
Check results can be shown by touch-screen 15；
Simultaneously operator can also be realized by touch-screen 15 and industrial computer 14 order assign with data communication etc. function, work
Control machine 14 can use Labview softwares to carry out software development.
Further, digital signal processing module 1 also includes：Sub-module stored 13；
Sub-module stored 13 and the 3rd output end of digital signal processor 11 communicate to connect.
It should be noted that the data and code during digital operation can be stored by sub-module stored 13.
Further, sub-module stored 13 specifically includes：SDRAM memory and/or flash chip.
It should be noted that data and the generation during digital operation can be stored by SDRAM memory and flash chip
Code, and data will not lose after power-off；
Wherein SDRAM memory can be the SDRAM memory (model MT48LC4M16A2TG) of 64MB memory capacity, flash memory
Chip can be the flash chip (model SST39VF6401) of 32MB memory capacity.
Further, digital signal processor 11 is specially ADSP BF531 signal processors.
It should be noted that the arithmetic speed of ADSP BF531 signal processors is up to 400MHz.
Further, power supply submodule 12 specifically includes：Power management chip TLV1117-33 and power management chip
TLV1117A。
It should be noted that the input voltage of this power supply submodule 12 is 5V, input voltage is derived from linear power supply module, line
The characteristics of property power supply is that ripple is small, and the interference to data signal is small；
3.3V, 1.25V can be converted to by power management chip TLV1117-33 and power management chip TLV1117A
Powered with 1.8V DC voltage for digital signal processing module 1.
Further, the first Ethernet interface specifically includes：ST communication interfaces and/or SC communication interfaces and/or LC communications
Interface and/or RJ45 communication interfaces.
It should be noted that ST communication interfaces are the conventional communication interface of digital electricity meter, in order to improve the compatibility of system
Property and scalability, can as needed set up or retain SC communication interfaces, the communication such as LC communication interfaces and RJ45 communication interfaces
Interface.
Further, the second Ethernet interface specifically includes：ST communication interfaces and/or SC communication interfaces and/or LC communications
Interface and/or RJ45 communication interfaces.
Further, the output end of digital signal processor 11 second is communicated to connect by serial line interface and industrial computer 14.
Further, serial line interface is RS232 communication interfaces.
It should be noted that digital signal processor 11 passes through 16 universaling I/O ports and 16 BITBUS network interfaces and other moulds
Block and component communication, wherein 16 BITBUS network interfaces employ multiplexing mechanism；
Digital signal processor 11 is communicated by serial line interface with industrial computer 14, and serial line interface is chosen as RS232 and led to
Believe interface.
Standard digital electric energy meter in the present embodiment can receive IEC61850 data frames, can also send IEC61850 data
Frame；Electrical energy pulse can be sent, can also receive electrical energy pulse, using flexible is powerful；
Standard digital electric energy meter in the present invention can be by Ethernet output interface 6 and multi-pass interchanger 2 by Ethernet
The IEC61850 data frames with voltage and current signal all the way that input interface 5 receives are forwarded into multichannel IEC61850 data
Frame, and multiple electric energy meters are sent respectively to, the electric flux each measured is inputted mould by multiple electric energy meters by multiple electrical energy pulses
Block 3 is transferred in standard digital electric energy meter, and the electric flux measured in digital signal processor 11 with standard digital electric energy meter
It is compared, completes verification, so the standard digital electric energy meter in the present invention can verify to more electric energy meters simultaneously, improves
Operating efficiency, solves the low technical problem of current standard digital electric energy meter operating efficiency, and increased calculating quilt newly
Examine the function of digital electricity meter electrical energy pulse error, the data signal of standard digital electric energy meter that can directly in the present embodiment
Handled in processor 11, without extra Error Calculator.
It is above a kind of another embodiment of standard digital electric energy meter provided by the invention, below to be provided by the invention
A kind of application examples of standard digital electric energy meter.
Referring to Fig. 3, the invention provides an a kind of application examples of standard digital electric energy meter.
IEC61850 data frames are input to standard digital electric energy by standard digital power source 7 by Ethernet input interface 5
In table, standard digital electric energy meter IEC61850 data frames will be converted all the way by Ethernet output interface 6 and multi-pass interchanger 2
For three road IEC61850 data frames and it is forwarded to tested digital electricity meter No. 18, tested digital electricity meter No. 29 and tested numeral electricity
Energy table No. 3 10；
Being detected digital electricity meter No. 18, tested digital electricity meter No. 29 and tested digital electricity meter will each measure for No. 3 10
Energy data electrical energy pulse input module 3 is transferred to by the electrical energy pulse of standard digital electric energy meter；
Electrical energy impulse signals are transferred in digital signal processor 11 by electrical energy pulse input module 3, by each tested number
The electrical energy pulse of word electric energy meter and the energy data that standard digital electric energy meter measures carry out error calculation, and by each tested numeral
The check results of electric energy meter are shown in touch-screen 15.
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, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed device, can be by others side
Formula is realized.For example, device embodiment described above is only schematical, for example, the division of the module, only one
Kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple module or components can combine or
Another system is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed it is mutual it
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or module
Connect, can be electrical, mechanical or other forms.
The module illustrated as separating component can be 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 functional module in each embodiment of the present invention can be integrated in a processing module, can also
That modules are individually physically present, can also two or more modules be integrated in a module.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
- A kind of 1. standard digital electric energy meter, it is characterised in that including：Digital signal processing module, multi-pass interchanger, electric energy arteries and veins Rush input module, electrical energy pulse output module, Ethernet input interface and Ethernet output interface；The digital signal processing module specifically includes：Power supply submodule and digital signal processor；The output end of the power supply submodule electrically connects with the receiving end of the digital signal processor；The first input end of the Ethernet input interface and the digital signal processor communicates to connect；The Ethernet output interface is connected with the Ethernet input interface communication；The multi-pass interchanger is connected with the Ethernet output interface communication；Second input of the electrical energy pulse input module and the digital signal processor communicates to connect, the electrical energy pulse The quantity of input module is two or more；First output end of the electrical energy pulse output module and the digital signal processor communicates to connect.
- 2. a kind of standard digital electric energy meter according to claim 1, it is characterised in that also include：Industrial computer and touch-screen；The output end of digital signal processor second communicates to connect with the industrial computer；The industrial computer connects with the touch panel communication.
- 3. a kind of standard digital electric energy meter according to claim 1, it is characterised in that the digital signal processing module is also Including：Sub-module stored；The sub-module stored and the 3rd output end of the digital signal processor communicate to connect.
- 4. a kind of standard digital electric energy meter according to claim 3, it is characterised in that the sub-module stored is specifically wrapped Include：SDRAM memory and/or flash chip.
- 5. a kind of standard digital electric energy meter according to claim 1, it is characterised in that the digital signal processor is specific For ADSP BF531 signal processors.
- 6. a kind of standard digital electric energy meter according to claim 1, it is characterised in that the power supply submodule specifically wraps Include：Power management chip TLV1117-33 and power management chip TLV1117A.
- 7. a kind of standard digital electric energy meter according to claim 1, it is characterised in that first Ethernet interface is specific Including：ST communication interfaces and/or SC communication interfaces and/or LC communication interfaces and/or RJ45 communication interfaces.
- 8. a kind of standard digital electric energy meter according to claim 1, it is characterised in that second Ethernet interface is specific Including：ST communication interfaces and/or SC communication interfaces and/or LC communication interfaces and/or RJ45 communication interfaces.
- A kind of 9. standard digital electric energy meter according to claim 2, it is characterised in that the digital signal processor second Output end is communicated to connect by serial line interface and the industrial computer.
- 10. a kind of standard digital electric energy meter according to claim 9, it is characterised in that the serial line interface leads to for RS232 Believe interface.
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Application publication date: 20180109 |