CN202631632U - Digital quantity input electric energy meter - Google Patents
Digital quantity input electric energy meter Download PDFInfo
- Publication number
- CN202631632U CN202631632U CN 201220314559 CN201220314559U CN202631632U CN 202631632 U CN202631632 U CN 202631632U CN 201220314559 CN201220314559 CN 201220314559 CN 201220314559 U CN201220314559 U CN 201220314559U CN 202631632 U CN202631632 U CN 202631632U
- Authority
- CN
- China
- Prior art keywords
- chip
- main cpu
- electric energy
- energy meter
- cpu unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a digital quantity input electric energy meter. A main CPU (Central Processing Unit) (1) is respectively connected with a digital signal processing chip (2), a second network physical layer chip (4), a display unit (8), a sixteen bit single chip microcomputer (7), an NANDFLASH chip (11) and a ferroelectric storage chip (12). The digital signal processing chip (2) is respectively connected with a first network physical layer chip (3) and a flash chip (10). The network physical layer chips are connected with optical fiber Ethernet interfaces. The display unit (8) comprises a dot matrix liquid crystal screen (8-1) and a function button (8-2) respectively connected with the main CPU (1). The function button (8-2) is further connected with the sixteen bit single chip microcomputer (7). IEC (International Electrotechnical Commission) 618509-1 and IEC618509-2 process layer transport protocols are supported at the same time, and signal transport requirements of all digital transformer substations are satisfied.
Description
Technical field
The utility model relates to a kind of digital quantity input electric energy meter, is specifically related to a kind of 0.2S level three-phase electronic multifunctional electric energy meter that can be applicable to digital transformer substation on the IEC61850 standard base.
Background technology
Along with the development of intelligent grid, transformer station's digitizing, intellectuality have become a kind of trend.Digital transformer substation is different from traditional transformer station; Its framework is on the IEC61850 standard base, and the three-decker of employing process layer, wall and station level has replaced traditional mutual inductor at front end with electronic mutual inductor; All electrical measurements are all after the process layer changes into the digital signal that meets IEC61850 9-1,9-2 agreement; Pass to process layer or bay device through fiber optic Ethernet, the result after these equipment are handled electrical measurement is according to IEC61850 7-1; Regulations such as 7-2 pass to the station level system through Ethernet.Under this condition; Can only support the analog quantity input; And the traditional electric energy meter that does not possess bi-directional communication function is just no longer suitable, and need be specifically designed to the digital quantity input electric energy meter of digital transformer substation, and digital quantity input electric energy meter technology is in the starting stage at present.
The patent No. is that 200820052568.8 Chinese utility model patent discloses a kind of digital transformer substation electric energy meter; The related electric energy meter of this patent can be realized the input of digital electrical measuring-signal; And support optical fiber and RJ45 interface, but should technology also have bigger limitation: at first, in this utility model; The protocol processes chip is only supported IEC61850 9-1, and present most digital transformer substation all is to adopt IEC61850 9-2 as process layer host-host protocol.Secondly; This utility model only has an optical fiber interface to be used to receive the digital electrical measuring-signal; Another one RJ45 interface then is that it does not possess the interface of communicating by letter with station level as test or field adjustable usefulness, does not therefore also meet the requirement of digital transformer substation to two-way communication.
The utility model content
The utility model technical matters to be solved is a kind of digital quantity input electric energy meter to be provided, as the digital quantity input electric energy meter that is applicable to digital transformer substation on the IEC61850 standard base.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme.
A kind of digital quantity input electric energy meter comprises main CPU unit, and it is characterized in that: main CPU unit is connected with digital signal processing chip, and said digital signal processing chip is connected with the first networked physics layer chip and flash chip respectively; The said first networked physics layer chip is connected with the first fiber optic Ethernet interface; Said main CPU unit also is connected with the second networked physics layer chip, and this second physical chip is connected with the second fiber optic Ethernet interface; Said main CPU unit also is connected with display unit and the 16-bit single-chip processor that is used for the ammeter low power consumption operation respectively; Said display unit comprises lattice lcd screen and the function button that is connected with said main CPU unit respectively, and described function key also is connected with 16-bit single-chip processor; Said main CPU unit also is connected with NAND FLASH chip and FeRAM memory chip respectively.
Main CPU unit comprises 200MHZ ARM9 processor.
Digital signal processing chip is high speed 30 binary digit signal processing chips.
Said display unit also comprises one road RS232 service port and one road USB interface.
Main CPU unit also is connected with the expansion communication unit.
Described expansion communication unit comprises two-way RS485 interface and one road RS232 interface.
The good effect of the utility model is: the utility model adopts two fiber optic Ethernet interfaces; An interface is used for the process layer network mutual; Can support the digital electrical measuring-signal input of IEC61850 9-1 and IEC61850 9-2 agreement simultaneously; Another one interface access station control layer network can be supported station level communication protocols such as IEC61850 7-1,7-2,7-3,8-1.And three nuclear framework---high-speed digital signal process chip DSP, host CPU ARM9 and 16 s' small-sized single-chip microcomputer have been designed.DSP cooperates ARM9 to accomplish all meterings and the work of IEC61850 model, and small-sized single-chip microcomputer is responsible for the work of ammeter under low-power consumption.
Say that further the utility model can be realized the reception of pure digi-tal electric measurement signal, reduce the systematic error that causes because of the analogue measurement passage; The Interface design scheme makes this utility model can support IEC61850 9-1 and IEC61850 9-2 process layer host-host protocol simultaneously, satisfies the request signal transmission of all digital transformer substations.
The second road fiber optic Ethernet interface makes the utility model carry out information interaction with station level, on the IEC61850 basis, carries out model configuration flexibly, reduces the workload of parameter setting and makes station communication more flexible.
Routine work under the low-power consumption such as the design architecture of three nuclears makes the table meter can support to have a power failure to check meter really realizes the accurate electric energy metrical of digital transformer substation.
Description of drawings
Fig. 1 is total electrical structure synoptic diagram of the utility model.
Fig. 2 is the frontplane cell synoptic diagram of the utility model.
Embodiment
Structure and principle of work below in conjunction with accompanying drawing and embodiment detailed description the utility model.
With reference to Fig. 1, the utility model comprises main CPU unit 1, and main CPU unit 1 comprises a 200MHZ ARM9 processor.Main CPU unit 1 connects DSP 30 binary digit signal processing chips 2 at a high speed through spi bus, and said DSP 30 binary digit signal processing chips 2 at a high speed is connected with the first networked physics layer chip 3 and flash chip 10.The said first networked physics layer chip 3 is connected with the first fiber optic Ethernet interface 5.Said main CPU unit 1 also directly is connected with the second networked physics layer chip 4, and this second physical chip 4 is connected with the second fiber optic Ethernet interface 6.
Said main CPU unit 1 connects the 16-bit single-chip processor 7 that is used for the ammeter low power consumption operation through universal serial bus.Said main CPU unit 1 also is connected with display unit 8 through parallel winding displacement.
As shown in Figure 2, said display unit 8 comprises lattice lcd screen 8-1 and two the function button 8-2 that are connected with said main CPU unit 1 respectively, also comprises one road RS232 service port and one road USB interface 8-3.Lattice lcd screen 8-1 in the described display unit 8 is connected with main CPU unit 1 through parallel bus, and two function key 8-2 are connected with main CPU unit 1 through the IO mouth, and two function key 8-2 also are connected with 16-bit single-chip processor 7 respectively through the IO mouth.Main CPU unit 1 also is connected with expansion communication unit 9 through universal serial bus, and described expansion communication unit 9 comprises two-way RS485 interface and one road RS232 interface.Said main CPU unit 1 also is connected with the NAND FLASH chip 11 and FeRAM memory chip 12 that is used for important parameter preservation and data power failure unloading respectively through parallel bus.
The utility model mainly receives the electrical measurement digital signal in the fiber optic Ethernets through first optical fiber interface 5 and the first networked physics layer chip 3, and in dsp processor 2 the analytic message stipulations, and carry out instantaneous flow and electric weight calculates.Main CPU unit 1 receives electric weight result of calculation in the dsp processor through spi bus, and carries out electric energy data processing, storage, demonstration and IEC61850 station level stipulations traffic operation.
Main CPU unit 1 also is responsible for carrying out alternately with the station level system through the second networked physics layer chip 4 and the second fiber optic Ethernet interface 6, and carries out IEC61850 model parsing work.
Main CPU unit 1 shows the electric energy metrical result through display unit 8, and carries out the parameter setting and take turns work such as apparent through the function key 8-2 that keeps watch in the display unit 8.
Main CPU unit 1 can be expanded two-way RS485 interface, one road RS232 interface through expanding communication unit 9.
16-bit single-chip processor 7 is responsible for when power down, taking over the work of whole table meter, accomplishes to have a power failure and wakes up through keeping watch on function key 8-2 in the display unit 8, and a series of activities such as check meter has a power failure.
Claims (6)
1. a digital quantity is imported electric energy meter; Comprise main CPU unit (1); It is characterized in that: main CPU unit (1) is connected with digital signal processing chip (2), and said digital signal processing chip (2) is connected with the first networked physics layer chip (3) and flash chip (10) respectively; The said first networked physics layer chip (3) is connected with the first fiber optic Ethernet interface (5); Said main CPU unit (1) also is connected with the second networked physics layer chip (4), and this second physical chip (4) is connected with the second fiber optic Ethernet interface (6); Said main CPU unit (1) also is connected with display unit (8) respectively and is used for the 16-bit single-chip processor (7) of ammeter low power consumption operation; Said display unit (8) comprises lattice lcd screen (8-1) and the function button (8-2) that is connected with said main CPU unit (1) respectively, and described function key (8-2) also is connected with 16-bit single-chip processor (7); Said main CPU unit (1) also is connected with NAND FLASH chip (11) and FeRAM memory chip (12) respectively.
2. digital quantity input electric energy meter as claimed in claim 1, it is characterized in that: main CPU unit (1) comprises 200MHZ ARM9 processor.
3. digital quantity input electric energy meter as claimed in claim 1 is characterized in that: digital signal processing chip (2) is high speed 30 binary digit signal processing chips.
4. digital quantity input electric energy meter as claimed in claim 1, it is characterized in that: said display unit (8) also comprises one road RS232 service port and one road USB interface (8-3).
5. digital quantity input electric energy meter as claimed in claim 1, it is characterized in that: main CPU unit (1) also is connected with expansion communication unit (9).
6. digital quantity input electric energy meter as claimed in claim 5, it is characterized in that: described expansion communication unit (9) comprises two-way RS485 interface and one road RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314559 CN202631632U (en) | 2012-07-02 | 2012-07-02 | Digital quantity input electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314559 CN202631632U (en) | 2012-07-02 | 2012-07-02 | Digital quantity input electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631632U true CN202631632U (en) | 2012-12-26 |
Family
ID=47384822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314559 Expired - Lifetime CN202631632U (en) | 2012-07-02 | 2012-07-02 | Digital quantity input electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914304A (en) * | 2015-06-25 | 2015-09-16 | 烟台东方威思顿电气股份有限公司 | Electric energy accurate measurement method and electric energy accurate measurement device under fluctuating load |
-
2012
- 2012-07-02 CN CN 201220314559 patent/CN202631632U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914304A (en) * | 2015-06-25 | 2015-09-16 | 烟台东方威思顿电气股份有限公司 | Electric energy accurate measurement method and electric energy accurate measurement device under fluctuating load |
| CN104914304B (en) * | 2015-06-25 | 2017-08-18 | 烟台东方威思顿电气有限公司 | Electric energy accurate measurement method and metering device under a kind of fluctuating load |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204287315U (en) | Based on the power monitoring system of STM32F103 microcontroller | |
| CN105589438A (en) | Intelligent mobile communication base station energy management system | |
| CN203522340U (en) | Power consumption load monitoring system | |
| CN201750433U (en) | Architectural energy consumption data acquisition device | |
| CN107482768A (en) | It is a kind of based on modular power information collection and load management in one terminal device | |
| CN204229397U (en) | RS232 serial ports and ethernet interface converter | |
| CN105823965A (en) | Distribution line fault real-time positioning and monitoring system based on smart phone | |
| CN202631632U (en) | Digital quantity input electric energy meter | |
| CN102355053A (en) | Transformer air-cooled control ied | |
| CN205091797U (en) | Architectural energy consumption concentrates supervisory systems based on cloud computing technology | |
| CN204926481U (en) | Data collection station based on thing networking | |
| CN212749047U (en) | Energy efficiency communication front-end processor based on cloud service platform | |
| CN202711442U (en) | Data collector applied to energy consumption monitoring system | |
| CN206773470U (en) | A kind of data concentrator | |
| CN204694753U (en) | A kind of high-precision transmission line of electricity electric current on-Line Monitor Device | |
| CN201409016Y (en) | Distribution transformer monitoring terminal device | |
| CN208061420U (en) | Wireless communication collection module and its manufactured electric energy meter | |
| CN202066908U (en) | Three-in-one electricity metering device | |
| CN203660662U (en) | Single-space five-in-one device for intelligent transformer station | |
| CN202931033U (en) | Integrated measurement and control apparatus for intelligent transformer station | |
| CN106652418A (en) | Spread-spectrum wireless meter-reading concentrator and meter-reading system | |
| CN202059410U (en) | Electrical network concentrator | |
| CN207542875U (en) | It is a kind of based on it is modular integrate power information acquisition and load management terminal device | |
| CN202362375U (en) | Transformer station electric energy meter | |
| CN201508625U (en) | Low-power consumption remote automatic meter reading device based on C-MBUS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YANTAI DONGFANG WISDOM ELECTRONIC CO., LTD. Free format text: FORMER NAME: YANTAI DONGFANG WISDOM ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 264000 Yantai Airport Road, Shandong, No. 2 Patentee after: YANTAI DONGFANG WISDOM ELECTRIC CO.,LTD. Address before: 264000 Yantai Airport Road, Shandong, No. 2 Patentee before: YANTAI DONGFANG WISDOM ELECTRIC Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 264003 Laishan City, Yantai province Venture Center, Shandong Patentee after: YANTAI DONGFANG WISDOM ELECTRIC Co.,Ltd. Address before: 264000 Yantai Airport Road, Shandong, No. 2 Patentee before: YANTAI DONGFANG WISDOM ELECTRIC CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |