CN109040870A - A kind of passive light EPON electricity consumption data acquisition system for petal type power grid - Google Patents

A kind of passive light EPON electricity consumption data acquisition system for petal type power grid Download PDF

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Publication number
CN109040870A
CN109040870A CN201811054716.4A CN201811054716A CN109040870A CN 109040870 A CN109040870 A CN 109040870A CN 201811054716 A CN201811054716 A CN 201811054716A CN 109040870 A CN109040870 A CN 109040870A
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CN
China
Prior art keywords
module
optical
network unit
optical network
power grid
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.)
Pending
Application number
CN201811054716.4A
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Chinese (zh)
Inventor
贾俊
梅鑫
杨磊
孙泰龙
符瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Jiangsu Electric Power Co Ltd
Taizhou Power Supply Co of Jiangsu Electric Power Co
Taizhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Jiangsu Electric Power Co Ltd
Taizhou Power Supply Co of Jiangsu Electric Power Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Jiangsu Electric Power Co Ltd, Taizhou Power Supply Co of Jiangsu Electric Power Co filed Critical State Grid Jiangsu Electric Power Co Ltd
Priority to CN201811054716.4A priority Critical patent/CN109040870A/en
Publication of CN109040870A publication Critical patent/CN109040870A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/06Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40Transceivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08Protocols for interworking; Protocol conversion

Abstract

The invention belongs to petal be power grid data acquisition equipment field more particularly to a kind of passive light EPON electricity consumption data acquisition system for petal type power grid.Passive light EPON electricity consumption data acquisition system for petal type power grid of the invention, have the characteristics that broadband is high, delay is low, it can fully be combined with petal power grid high stability with high security, improve the validity and stability of whole power grid power information data acquisition, electricity consumption data office acquisition system scalability with higher of the invention simultaneously, can be provided for the acquisition and transmission of electricity consumption data it is timely, reliable, safely perform approach, the development of popularization and application and intelligent data acquisition for petal power grid provides the foundation.

Description

A kind of passive light EPON electricity consumption data acquisition system for petal type power grid
Technical field
The invention belongs to petal be power grid data acquisition equipment field more particularly to a kind of nothing for petal type power grid Source light EPON electricity consumption data acquisition system.
Background technique
The petal mode of connection of power distribution network is as a kind of propagable method of operation and technical solution, to carry out the world comprehensively First-class distribution network construction provides new thinking and supporting method.Petal power grid is led to by every two feedback line of the same substation Guo Zhongya switching station pulls bracelet and is connected into pressure ring net in one " petal-shaped ";" petal " shape looped network of different substation is tangent to each other It is connected with each other, multiple " petal-shaped " looped networks constitute " flower " shape centered on substation.When normal operation, petal-shaped annular The not transregional power supply of power distribution network, the interconnection switch between petal disconnect, and the interconnection switch closure in substation is only led in failure It crosses the bus contact in substation or between substation and carries out large-scale load transfer between petal, and important load is due to setting Liaison office between petal realizes more the spare power supplies, therefore greatly improves the flexibility and reliability of power supply.Distribution Formula power supply device refers to that power is thousands of watts of independent current sources to 50MW small modules formula, with environmental compatible.These power supplys by Power department, power consumer or the 3rd side are all, specifically require to meet electric system and user.Such as peak regulation is outlying use Family or the power supply of shopping centre and residential block, save power transmission and transformation investment, improve power supply reliability etc..
Based on petal power grid and EPON technology, liter can be improved to the power information acquisition system in power grid Grade improves the intelligent effect of power grid to allow to carry multi-service, simplifies operation and maintenance difficulties, provides powerful Scalability provides basis for the data management and maintenance of power grid;Improve reliability, the safety of power information transmission;It realizes Real-time, the high speed acquisition of electric energy meter can satisfy the needs of power business development, to realize that smart grid provides help;But it is another On the one hand, how to guarantee data acquisition device obtain data accuracy and hardware reliability the problems such as be also device application When problem in need of consideration.
Summary of the invention
The purpose of the invention is, provides a kind of passive light EPON electricity consumption data acquisition system for petal type power grid System can be realized intelligence, the efficient acquisition of electricity consumption data in power grid, improve the timeliness and stability of data acquisition.
To achieve the above object, the invention adopts the following technical scheme that.
A kind of passive light EPON electricity consumption data acquisition system for petal type power grid,
Including multiple optical network units, optical network unit includes MCU main control module, optical transceiver module, Flash module, PSRAM module, serial ports expansion module;
MCU main control module controls optical module transceiver, completes in power grid for completing the network management of optical network unit end The communication between main website and intelligent electric meter is realized in 376.1 and 645 protocol conversions;EPON exchange core is provided in MCU main control module Piece, EPON exchange chip have been internally integrated Ethernet interface, GEPON mouthfuls, ethernet management mouth and arm9 kernel, in kernel bus Multiple peripheral hardwares are mounted with for carrying out Function Extension;Optical transceiver module utilizes SerDes for being used as Ethernet optical transceiving device Interface is connect with main control chip, realizes the remote transmission of duplex;Flash module, for storing eCos system kernel, file system And configuration parameter, basis is locally executed as eCos system;PSRAM module, as the extension of main control chip internal RAM, Guarantee system when Flash is run read-write variable, system thread storehouse possess and enough run RAM;Serial ports expansion mould Block, for as the communication channel between optical network unit module and lower pocket watch;
It further include the optical line terminal for being set to each substation, each optical network unit shared data acquires channel capacity, light Specific broadband is distributed to optical network unit according to system configuration in line terminal, while making all optical network units and corresponding light The road terminal prot retention time is synchronous;Optical line terminal transmits number to optical network unit by level-one or multistage passive optical splitters It is received according to, each optical network unit and receives corresponding data frame after being judged after data according to logic circuit mark;
It further include power module, power module is used to provide energy for optical network unit, and power module includes DC-DC pressure stabilizing Device, decoupling capacitor, power supply;Wherein the external voltage of 12V carries out voltage conversion by DC-DC voltage regulator circuit to obtain 3.3V's Chip voltage;Decoupling capacitor is used to guarantee the stability and continuity in module between pcb board block, including PCB decoupling capacitor, envelope Fill decoupling capacitor and on piece decoupling capacitor;The decoupling speed of three successively increases,
It further include data acquisition channel, including being set to main website, substation, the telecommunication master between switchyard website Net becomes the communication access net of transformer, setting set on substation/switchyard to power distribution room/switching station/ring network cabinet/switchgear/platform Data communication network between data collection station and electric supply meter;Data communication network is the logical of optical network unit and self energy ammeter Believe link;
Wherein optical network unit is hung over by the UART interface of intelligent electric meter to master meter, and is connected to its remaining pocket watch; Optical network unit has both concentrator and collector.
To above scheme it is further refinement further include, MCU module at least needs three serial ports, for respectively realize adjust It examination and is communicated with master meter and other time pocket watches, needs to expand at least one serial ports in MCU chip, in MCU chip There are idle SPI mouth and I2C mouthfuls, carry I2C or UART chip can expand multiple strings under the wherein bus of a mouth Mouth is used as communication channel;UART conversion chip is turned using XR20M1172 type I2C/SPI in the present invention, is gone back in serial ports expansion module It is provided with the baud rate generation device that UART is supplied to whether there is or not source crystal oscillator.
To above scheme it is further refinement further include, serial ports expansion module is additionally provided with level shifting circuit.
To above scheme it is further refinement further include, wherein UART port is connected to master meter to optical network unit all the way Microcontroller, and connect after UART/RS485 circuit by being connected to other lower pocket watches under RS485 bus;Another way UART port is direct Then the another way UART/RS485 circuit being connected on master meter is communicated by RS485 bus with other lower pocket watches.
To above scheme it is further refinement further include, between data collection station to optical line terminal equipment use Q/ GDW376.1-2009 agreement;From local side optical line terminal between optical network unit using carry Q/GDW376.1-2009 agreement Passive fiber;Each intelligent electric meter and optical network unit or other data terminals are carried out with point-to-point or one master and multiple slaves structure Two-way communication.
The beneficial effect is that:
Passive light EPON electricity consumption data acquisition system for petal type power grid of the invention has broadband height, delay low The characteristics of, it can fully be combined with petal power grid high stability with high security, improve whole power grid power information The validity and stability of data acquisition, while electricity consumption data office acquisition system scalability with higher of the invention, can For electricity consumption data acquisition and transmission provide it is timely, reliable, safely perform approach, the popularization and application for petal power grid And the development of intelligent data acquisition provides the foundation.
Detailed description of the invention
Fig. 1 is the theory structure schematic diagram of passive light EPON electricity consumption data acquisition system of the invention;
Fig. 2 is the structural schematic diagram of optical network unit in the present invention;
Fig. 3 is that 12V turns 3.3V voltage conversion circuit figure;
Fig. 4 is that 3.3V turns 1.0V voltage conversion circuit figure.
Specific embodiment
It elaborates below in conjunction with specific embodiment to the invention.
As shown in Figure 1, a kind of passive light EPON electricity consumption data acquisition system for petal type power grid of the invention, mesh Be to provide for it is a kind of can in petal power grid stable and high effective operation data acquisition plan, in conjunction with petal power grid from Body feature, improves its electric network performance and expansion capability, and primary structure includes:
Optical network unit as shown in Figure 2, including MCU main control module, optical transceiver module, Flash module, PSRAM module, Serial ports expansion module, MCU main control module control optical module transceiver, complete net for completing the network management of optical network unit end The communication between main website and intelligent electric meter is realized in interior 376.1 and 645 protocol conversions;EPON exchange is provided in MCU main control module Chip, exchange chip have been internally integrated Ethernet interface, GEPON mouthfuls, ethernet management mouth and arm9 kernel, have hung in kernel bus Multiple peripheral hardwares are loaded with for carrying out Function Extension;
Optical transceiver module is connect with main control chip using SerDes interface, is realized for being used as Ethernet optical transceiving device Duplexing remote transmission;
Flash module, the sheet for storing eCos system kernel, file system and configuration parameter, as eCos system Ground executes basis;In the specific implementation process, NorFlash can be used, to utilize its low-power consumption, convenient for the spy of layout designs Point, the structure and design difficulty of simplified element module.
PSRAM module, as the extension of main control chip internal RAM, guarantee system when Flash is run read-write variable, The storehouse of system thread, which possesses, enough runs RAM;In the present invention optical network unit chip can be used Asynchronous SRAM or UtSRAM;In the present invention, preferential that FBGA is selected to encapsulate from the purpose for reducing cost and reducing unit volume UtSRAM also has the characteristics that capacity is high, low in energy consumption.
Serial ports expansion module, for as the communication channel between optical network unit module and lower pocket watch, particularly, to protect The reliability and stability for demonstrate,proving communication, is additionally provided with additional level shifting circuit.Specifically, the module in the present invention is at least Three serial ports are needed, for realizing debugging respectively and being communicated with master meter and other lower pocket watches, need to extend on chip At least one serial ports out has idle SPI mouth and I2C mouthfuls in the present invention on main control chip, hangs under the wherein bus of a mouth Multiple serial ports can be expanded as communication channel by carrying I2C or UART chip;XR20M1172 type I2C/ is used in the present invention SPI turns UART conversion chip, and the baud rate generation dress that UART is supplied to whether there is or not source crystal oscillator is additionally provided in serial ports expansion module It sets;
Wherein, each optical network unit shared data acquires channel capacity, and optical line terminal is according to system configuration to optical-fiber network Unit distributes specific broadband, while keeping all optical network units synchronous with the corresponding optical line terminal port retention time;Light Road terminal transmits data to optical network unit by level-one or multistage passive optical splitters, and each optical network unit receives root after data Corresponding data frame is received after being judged according to logic circuit mark;
Power module is used to provide energy for optical network unit, in the specific implementation process, the PCB packet in optical network unit Multi-layer board is included, therefore power module includes DC-DC voltage-stablizer, decoupling capacitor, power supply;
It needs to provide multiple operating voltages, including 12V, 3.3V, 1.0V and 5.0V in the present invention;Wherein 12V is system Voltage can be provided by outside, and 3.3V voltage is used to power for each chip, and 1.0V is that RAM controls its kernel supply voltage, 5.0V Isolation optocoupler supply voltage mainly in master meter;TPS420DC-DC voltage regulator circuit is passed through by the external voltage of 12V in the present invention Voltage conversion is carried out to obtain the chip voltage of 3.3V, circuit is as shown in Figure 3;After obtaining the chip voltage of 3.3V, i.e., There can be 3.3V voltage further to obtain 1.0V operating voltage, which use LDO chip LP38501, and voltage has been effectively ensured Correction accuracy.Its basic circuit structure is as shown in Figure 4.The voltage of 5.0V is then converted to by LR78Lo5 chip;
Decoupling capacitor is used to guarantee the stability and continuity in module between pcb board block, including PCB decoupling capacitor, envelope Fill decoupling capacitor and on piece decoupling capacitor;The decoupling speed of three successively increases, and in the specific implementation process, X7R can be used Ceramic chip capacitor is utmostly to utilize its high frequency characteristics;Tantalum capacitor is then used for storage capacity and low frequency decoupling;
Data acquisition channel
Including being set to main website, substation, the telecommunication major network between switchyard website, such as based on IPoverSDH Fiber backbone network;It further include being set to substation/switchyard to become transformer to power distribution room/switching station/ring network cabinet/switchgear/platform Communication access net;It further include the data communication network being set between data collection station and electric supply meter;
Data communication network is the communication link of optical network unit Yu self energy ammeter;Wherein optical network unit passes through intelligent electric meter UART interface hang over to master meter, and be connected to its remaining pocket watch;Optical network unit has both concentrator and collector;It is specific and Speech, wherein UART port is connected to the microcontroller of master meter to optical network unit all the way, and passes through after connecting UART/RS485 circuit Other lower pocket watches are connected under RS485 bus;Another way UART port is connected directly to the another way UART/RS485 electricity on master meter Then road is communicated by RS485 bus with other lower pocket watches;
Wherein, Q/GDW376.1-2009 agreement is used between data collection station to optical line terminal equipment;From local side light The passive fiber of Q/GDW376.1-2009 agreement is carried to using between optical network unit in line terminal;Each intelligent electric meter and light Network unit or other data terminals are with the progress two-way communication of point-to-point or one master and multiple slaves structure;
Finally it should be noted that above embodiments are only to illustrate the technical solution of the invention, rather than to this hair It is bright create protection scope limitation, although being explained in detail referring to preferred embodiment to the invention, this field it is general Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the invention, without departing from this The spirit and scope of innovation and creation technical solution.

Claims (5)

1. a kind of passive light EPON electricity consumption data acquisition system for petal type power grid, it is characterised in that:
Including multiple optical network units, optical network unit includes MCU main control module, optical transceiver module, Flash module, PSRAM mould Block, serial ports expansion module;
MCU main control module controls optical module transceiver, completes 376.1 in power grid for completing the network management of optical network unit end With 645 protocol conversions, the communication between main website and intelligent electric meter is realized;EPON exchange chip is provided in MCU main control module, EPON exchange chip has been internally integrated Ethernet interface, GEPON mouthfuls, ethernet management mouth and arm9 kernel, hangs in kernel bus Multiple peripheral hardwares are loaded with for carrying out Function Extension;Optical transceiver module is connect for being used as Ethernet optical transceiving device using SerDes Mouth is connect with main control chip, realizes the remote transmission of duplex;Flash module, for store eCos system kernel, file system with And configuration parameter, basis is locally executed as eCos system;PSRAM module is protected as the extension of main control chip internal RAM Card system when Flash is run read-write variable, system thread storehouse possess and enough run RAM;Serial ports expansion module, For as the communication channel between optical network unit module and lower pocket watch;
It further include the optical line terminal for being set to each substation, each optical network unit shared data acquires channel capacity, optical link Terminal distributes specific broadband to optical network unit according to system configuration, while keeping all optical network units whole with corresponding optical link Hold the port retention time synchronous;Optical line terminal transmits data to optical network unit by level-one or multistage passive optical splitters, Corresponding data frame is received after being judged after each optical network unit reception data according to logic circuit mark;
Further include power module, power module is used to provide energy for optical network unit, power module include DC-DC voltage-stablizer, Decoupling capacitor, power supply;Wherein the external voltage of 12V carries out voltage conversion by DC-DC voltage regulator circuit to obtain the core of 3.3V Piece voltage;Decoupling capacitor is used to guarantee the stability and continuity in module between pcb board block, including PCB decoupling capacitor, encapsulation Decoupling capacitor and on piece decoupling capacitor;The decoupling speed of three successively increases,
It further include data acquisition channel, including being set to main website, substation, the telecommunication major network between switchyard website, if Become the communication access net of transformer in substation/switchyard to power distribution room/switching station/ring network cabinet/switchgear/platform, is set to number According to the data communication network between acquisition terminal and electric supply meter;Data communication network is the communication chain of optical network unit Yu self energy ammeter Road;
Wherein optical network unit is hung over by the UART interface of intelligent electric meter to master meter, and is connected to its remaining pocket watch;Light net Network unit has both concentrator and collector.
2. a kind of passive light EPON electricity consumption data acquisition system for petal type power grid according to claim 1, feature It is, MCU module at least needs three serial ports, for realizing debugging respectively and being led to master meter and other lower pocket watches Letter needs to expand at least one serial ports in MCU chip, has idle SPI mouth and I2C mouthfuls in MCU chip, wherein a mouth Bus under carry I2C or UART chip can expand multiple serial ports as communication channel;It is used in the present invention XR20M1172 type I2C/SPI turns UART conversion chip, is additionally provided with that whether there is or not source crystal oscillators to be supplied to UART in serial ports expansion module Baud rate generation device.
3. a kind of passive light EPON electricity consumption data acquisition system for petal type power grid according to claim 1, feature It is, serial ports expansion module is additionally provided with level shifting circuit.
4. a kind of passive light EPON electricity consumption data acquisition system for petal type power grid according to claim 1, feature It is, wherein UART port is connected to the microcontroller of master meter to optical network unit all the way, and leads to after connecting UART/RS485 circuit It crosses under RS485 bus and is connected to other lower pocket watches;Another way UART port is connected directly to the another way UART/RS485 on master meter Then circuit is communicated by RS485 bus with other lower pocket watches.
5. a kind of passive light EPON electricity consumption data acquisition system for petal type power grid according to claim 1, feature It is, Q/GDW376.1-2009 agreement is used between data collection station to optical line terminal equipment;From local side optical line terminal To the passive fiber for using carrying Q/GDW376.1-2009 agreement between optical network unit;Each intelligent electric meter and optical network unit Or other data terminals carry out two-way communication with point-to-point or one master and multiple slaves structure.
CN201811054716.4A 2018-09-11 2018-09-11 A kind of passive light EPON electricity consumption data acquisition system for petal type power grid Pending CN109040870A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111899501A (en) * 2020-08-04 2020-11-06 广东电网有限责任公司 Remote control method for switch in distribution network automation master station substation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102065345A (en) * 2010-12-01 2011-05-18 王健 Method and circuit for transmitting meter-reading information of electricity meter by utilizing low-cost time division multiplex optical network

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Publication number Priority date Publication date Assignee Title
CN102065345A (en) * 2010-12-01 2011-05-18 王健 Method and circuit for transmitting meter-reading information of electricity meter by utilizing low-cost time division multiplex optical network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨正进: "基于在EPON的用电信息采集终端设计与实", 《工程科技Ⅱ辑》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111899501A (en) * 2020-08-04 2020-11-06 广东电网有限责任公司 Remote control method for switch in distribution network automation master station substation
CN111899501B (en) * 2020-08-04 2021-08-06 广东电网有限责任公司 Remote control method for switch in distribution network automation master station substation

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Application publication date: 20181218