CN203119898U - FTU communication device and electric power transmission system - Google Patents
FTU communication device and electric power transmission system Download PDFInfo
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- CN203119898U CN203119898U CN2012205602437U CN201220560243U CN203119898U CN 203119898 U CN203119898 U CN 203119898U CN 2012205602437 U CN2012205602437 U CN 2012205602437U CN 201220560243 U CN201220560243 U CN 201220560243U CN 203119898 U CN203119898 U CN 203119898U
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Abstract
The utility model discloses an FTU communication device and an electric power transmission system, wherein the FTU communication device comprises the following components: at least two photoelectric conversion modules, at least two optical nodes ONU, an exchange module, a distribution transformer monitoring terminal FTU protocol processing module, a connector module and a power supply module; wherein, one end of one photoelectric conversion module is connected with a passive optical fiber network PON, and the other end is connected with one ONU. The ONU is connected with the exchange module and the FTU protocol processing module. The exchange module is connected with the connector module. The FTU protocol processing module is connected with the exchange module and the connector module respectively. The connector module outputs electric power to the power module. The power module supplies the electric power after voltage conversion to the photoelectric conversion module, the ONU, the exchange module and the FTU protocol processing module. The FTU communication device improves conversion stability of the photoelectric signal.
Description
Technical field
The utility model relates to the power system telecommunications technology field, relates in particular to a kind of FTU communicator and electrical power transmission system.
Background technology
Line feed terminals (Feeder Terminal Unit is called for short FTU) is the control unit of whole electrical power distribution automatization system, it is the bridge that connects switch and data acquisition and control (SCADA) system, be used for panel switches are carried out data acquisition and control, with the distribution master station communication, distribution system operation control and management desired data are provided, carry out main website to the regulating and controlling order of controller switching equipment, realize every function of power distribution automation.
At present, the power communication mode mainly contains: power line carrier communication (PLC), optical fiber communication etc.Other unit of FTU and whole electrical power distribution automatization system also is mainly to use this two kinds of communication modes when communicating.
PLC refers to utilize existing power line, the analog or digital signal is carried out the technology of high-speed transfer by carrier system.Maximum characteristics are not need to set up again network, as long as live wire just can carry out the data transmission.At present, PLC mainly contains following defective:
(1) bandwidth decay in ammeter place is serious
Under most of situation, plc data need transmit by ammeter, and bandwidth often produces very large decay here, and this becomes one of major technique bottleneck of PLC.Whether the bandwidth of PLC is in the formation decay of ammeter place, subject matter is the design of ammeter, rather than the technical factor of PLC self, different ammeter equipment suppliers' ammeter equipment is different, it mainly is the position problems of capacitor, ammeter product before particularly putting for capacitor is owing to can make high-frequency signal be short-circuited.
(2) noise is big, fail safe is low
The main cause that this situation occurs is; the infrastructure of electric power system does not have the function that quality data transmission service is provided; and, because can producing communication, disturbs the electromagnetic wave that electrical equipment produces, so through regular meeting some unpredictable mistakes take place when using power line to communicate.
(3) utilize the information security issue of power line communications
Because the infrastructure of electric power system and operating characteristic have determined that it is an open structure, though adopted technology protection measure, can't guarantee the safety of its information.Secondly, also exist the problem of widening of bandwidth.
The main feature of optical fiber communication is that transmission capacity is big, two-forty, transmission range length, strong interference immunity, good insulation preformance etc., especially these two big characteristics of anti-electromagnetic interference and good insulation preformance can be applicable to high voltage strong electromagnetic interference environments such as electric substation, high-tension line, are the communication modes of extensive use progressively in the present communication of power system.Information can be transmitted more quickly on light path, increases bandwidth and the network throughput of the whole decorum.The continuous decline of optical fiber cost has also reduced the expense of opening and the maintenance cost of whole system.
The EPON industry size is huge, and the whole world is widely used, and domestic equipment merchant occupies main flow, adopting point to the multiple spot technology, is relation in parallel between the terminal-to-terminal service, and does not need power supply in light transmission way, do not have electronic unit, lay easily, save long-time maintenance cost and management cost.EPON can provide abundant product line and equipment form flexibly, being fit to miscellaneous service access and scene disposes, carry IP comprehensively, VoIP, WiFi, TDM, xDSL, IPTV, CATV, business such as RS232/RS485, take into account various application scenarioss, has high bandwidth, characteristics such as low delay, can provide intelligent grid for power industry, distribution network automated, power information is gathered, electric power building/business hall is inserted, PFTTH power optical fiber specialty such as register one's residence, reliable communication solution, it is strong reliable to satisfy intelligent grid fully, economical and efficient, clean environment firendly, transparent opening, friendly interactive requirement.
At present, the major defect of optical fiber communication is: the less stable in the light signal transfer process, optical node (Optical Network Unit, when ONU) losing efficacy appearred in equipment, broke down by optical fiber communication.
The utility model content
The technical problem of photosignal conversion poor stability the utility model proposes a kind of FTU communicator and electrical power transmission system when solving optical fiber communication in the prior art.
An aspect of the present utility model provides a kind of FTU communicator, comprising: at least 2 photoelectric conversion modules, at least two optical node ONU, Switching Module, distribution transformer monitoring terminal FTU protocol process module, connector modules and power modules; Wherein, an end of one of them photoelectric conversion module is connected with passive optical-fiber network PON, and the other end is connected with one of them ONU; Described ONU is connected with the FTU protocol process module with Switching Module respectively; Described Switching Module is connected with described connector modules; Described FTU protocol process module is connected with described connector modules with Switching Module respectively; Described connector modules out-put supply is to described power module; The power supply of described power module after with voltage transitions offers described photoelectric conversion module, ONU, Switching Module and FTU protocol process module.
Wherein, be connected by GPIO, UART or I2C communication interface between FTU protocol process module and the described connector modules.
Connector modules comprises two group 2 * 20 the double pin that is connected with the FTU integrated circuit board.
Photoelectric conversion module is connected with PON by the SC interface.
Another aspect of the present utility model provides a kind of electrical power transmission system to comprise: distribution transformer monitoring terminal FTU, FTU communicator, optical line terminal OLT and main website; Wherein, described main website is connected with described OLT; Described FTU communicator comprises at least two optical node ONU, and described OLT is connected with FTU by described ONU respectively.
Be connected by optical branching device between OLT and the described ONU.Be connected by switch between OLT and the described main website; Or be connected by switch or router between described OLT and the described main website.
FTU communicator of the present utility model and electrical power transmission system; by the mutually redundant photosignal of multichannel translated channel is set; can under the situation that does not change original fiber optic network structure, improve photosignal conversion stability, realize that full light protection switches, to playing a protective role of ONU.When the MAC of certain service channel breaks down, can there be backup path to continue the supporting business transmission, be unlikely to make service disconnection.
Description of drawings
Fig. 1 is the structural representation of the utility model FTU communicator embodiment;
Fig. 2 is the structural representation of the utility model electrical power transmission system embodiment;
Fig. 3 is the concrete networking schematic diagram of the utility model electrical power transmission system;
Fig. 4 is another concrete networking schematic diagram of the utility model electrical power transmission system.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, the utility model FTU communicator embodiment comprises: at least 2 photoelectric conversion module 11a, 11b, at least two optical node ONU12a, 112b, Switching Module 13, FTU protocol process module 14, connector modules 15 and power module 16.
Wherein, and the end of photoelectric conversion module 11a and passive optical-fiber network (Passive Optical Network, PON) 1 connects, and the other end is connected with one of them ONU12a; The end of photoelectric conversion module 11b is connected with PON2, and the other end is connected with one of them ONU12b.Photoelectric conversion module is used for realizing the signal of telecommunication to the conversion of light signal, and photoelectric conversion module is connected with PON by the SC interface.
The ONU module links to each other with photoelectric conversion module with Switching Module, is used for realizing the ONU functions of the equipments of EPON agreement defined, with the external OLT equipment EPON communication system that formation is complete jointly.
ONU12a, 12b are connected with FTU protocol process module 14 with Switching Module 13 respectively.
Switching Module 13 is connected with connector 15 modules.Switching Module comprises one 5 mouthfuls 100,000,000 exchange chips and accessory circuit thereof; be used for connecting two ONU modules, FTU protocol process module and connector modules; mainly act as isolation, mirror image and the protection handoff functionality realized between the different network interfaces; Switching Module is worked under the management of FTU protocol process module, finishes different functions of exchange according to the instruction of FTU protocol process module.
FTU protocol process module 14 is connected with connector modules 15 with Switching Module 13 respectively.The FTU protocol process module comprises an arm processor and accessory circuit thereof, be mainly used in finishing the processing of network communication protocol and power communication agreement, wherein the procotol of Zhi Chiing is TCP client (supporting 2 connections), and the power communication agreement of support comprises DL/T 634.5101-2002, DL/T634.5104-2002, DNP3, SC1801, MODBUS.The FTU protocol process module also is responsible for Switching Module is configured, thereby realizes the non-principal and subordinate's mode of operation switching of single IP.Be connected by GPIO, UART or I2C communication interface between FTU protocol process module and the connector modules.
Connector modules comprises two group 2 * 20 the double pin that is connected with the FTU integrated circuit board.Signal on the connector modules comprises a road network mouth signal, GPIO signal and multichannel UART and I2C signal, and the FTU integrated circuit board offers the 5V power supply of FTU communicator and also draws from this double pin.
Connector modules 15 output 5V power supplys are to power module 16, and power module 16 becomes the operating voltage of 1V, 2.5V, 3V to offer other modules in the FTU communicator 5V voltage transitions.
At present, the communication protocol of FTU support has: TCP/IP, HTTP, DL/T 634.5101-2002, DL/T634.5104-2002, DNP3, SC1801, IEC60870-5-101, IEC60870-5-104.The message of these communication protocols can directly pass through FTU by this FTU communicator.
As shown in Figure 2, electrical power transmission system embodiment of the present utility model comprises: FTU25a, 25b, FTU communicator 24, OLT22 and main website 21.Wherein, FTU communicator 24 comprises at least two ONU241a, 241b, and OLT is connected with FTU25a, 25b by ONU241a, 241b respectively.
OLT22 is connected with ONU241a, 241b by optical branching device 23.
Be connected by switch between OLT and the main website; Or be connected by switch or router between OLT and the main website.
In the FTU communicator of the present utility model, each photoelectric conversion module and ONU are connected to form one tunnel medium access control (Media Access Control, MAC) passage.For guaranteeing the stability in the light signal transfer process; taked " handing in hand " protection structure; it is the order that a plurality of MAC do not have the principal and subordinate; just two MAC use an IP address; when MAC1 went wrong, the FTU communicator can switch to service channel on the MAC2, and is normal even MAC1 recovers again; service channel can not switched on the MAC1 yet, go wrong unless MAC1 recovers normal back MAC2.
The utility model is by arranging two-way photosignal translated channel at least, can improve photosignal conversion stability under the situation that does not change original fiber optic network structure, realizes that full light protection switches, to playing a protective role of ONU.When the MAC of certain service channel breaks down, can there be backup path to continue the supporting business transmission, be unlikely to make service disconnection.
Concrete networking based on above-mentioned electrical power transmission system has following two kinds of scenes:
(1) not with the networking scene of router
As shown in Figure 3, there is not router between OLT and the main website. switch wherein converges effect, and not necessarily, it is backbone transport layer equipment that its existence does not have the .PTN of influence to business.
Each FTU communicator among the figure is supported a PON circuit, OLT of every PON circuit ownership, and these two circuits are in the working state simultaneously, and two circuits can E-Packet simultaneously.
Terminal among the figure has two communication interfaces to link the FTU communicator, each Ethernet interface has an IP address (manual configuration, terminal is not supported DHCP at present). two ports are all in running order. and the business of two ports all is connected to the FTU communicator, determines to use which Ethernet interface by the FTU communicator.
Under the normal condition, Business Stream is from MAC1--＞OLT--＞main website; The FTU communicator is selected default port information (IP1) for use.
When the master used MAC 1 link failure, Business Stream was from MAC2--＞OLT--＞main website.
As shown in Figure 3, terminal, main website all distribute two IP addresses, belong to two network segments:
1, IP 1, IP2, IP 5 belong to the network segment 1.
2, IP a, IP b, IP e belong to the network segment 2.
Main website and terminal rely on many IP, realize that route/gateway separates, communicating by letter of main website backstage and terminal carried out dual transmitting and receiving by backstage and terminal, the DIP/SIP of two literary compositions of transmitting messages is inequality, the path, left side is operating path among the figure, when the operating path fault, main station system switches the message that receives on the path, right side, realizes dual transmitting and receiving.
To uplink traffic, terminal is not beaten CVLAN, so require the FTU communicator to access terminal by two Ethernet interfaces, two-port is supported by building untag stream; If cvlan is beaten in the terminal support, then can only insert by an Ethernet interface.
Two PON mouths of FTU communicator are in the working state simultaneously, and message carries out two layers of forwarding based on MAC+VLAN.
To uplink traffic, the purpose IP of the message of left side circuit is IP 5 among the figure, the IP 1 of this purpose IP and terminal belongs to the network segment 1 together, so directly ask by ARP, obtain the MAC Address of IP 5 correspondences, terminal will use the MAC of IP 5 to encapsulate this service message, and the FTU communicator uses this purpose MAC to carry out message and transmits.The purpose IP of the message of right side circuit is IPe among the figure, the IPa of this purpose IP and terminal belongs to the network segment 2 together, so directly by the ARP request, obtain the MAC Address of IP e correspondence, terminal will use the MAC of IP e to encapsulate this service message, and MAC uses this purpose MAC to carry out message and transmits.
(2) networking scene of band router
As shown in Figure 4, between OLT and the main website router is arranged.This router is isolated in two network segments to OLT and main website as gateway device.Switch converges effect among the figure, and not necessarily, it is backbone transport layer equipment that its existence does not have the .PTN of influence to business.
Each FTU communicator among the figure is supported a PON circuit, OLT of every PON circuit ownership, and these two circuits are in the working state simultaneously, and two circuits can E-Packet simultaneously.
Terminal among the figure has two communication interfaces to link the FTU communicator, and each Ethernet interface has an IP address (manual configuration, terminal is not supported DHCP at present).Two ports are all in running order.The business of two ports all is connected to the FTU communicator, determines to use that Ethernet interface by the FTU communicator.
Different with Fig. 3 is that Fig. 3 will make one time the IP address transition at the router place, like this network below the OLT and other Network Isolation, the fail safe that has improved network. in addition, the operation flow of Fig. 4 is identical with Fig. 3.
As shown in Figure 4, terminal, main website all distribute two IP addresses, belong to different segment:
1, IP1, IP2, IP3 belong to the network segment 1;
2, IP4, IP5 belong to the network segment 2;
3, IPa, IPb, IPc belong to the network segment 3;
4, IPd, IPe belong to the network segment 4.
To all terminals, the routing gateway of the network segment 1 is IP 3, and the routing gateway of the network segment 3 is IPc; To main website, the gateway of the network segment 2 is IP4; The gateway of the network segment 4 is IPd.
Main website and terminal rely on multisegment, many IP, realize that route/gateway separates, and communicating by letter of main website backstage and terminal carried out dual transmitting and receiving by backstage and terminal, the DIP/SIP of two literary compositions of transmitting messages is inequality, MAC1 is work MAC, and when the MAC1 fault, the FTU communicator switches to service channel on the MAC2.
To uplink traffic, terminal is not beaten CVLAN, so require optical module by two Ethernet interface amounts of accessing terminal, two-port is supported by building untag stream; If cvlan is beaten in the terminal support, then can only insert by an Ethernet interface.
Two PON mouths of FTU communicator are in the working state simultaneously, and message carries out two layers of forwarding based on MAC+VLAN.
To uplink traffic, the purpose IP of left side circuit message is IP 5 among the figure, and IP1 place network segment routing gateway is IP3, so ask by ARP, terminal will use the MAC of IP3 correspondence to encapsulate this service message, and the FTU communicator uses this MAC1 to carry out message and transmits, and uses MAC2 when MAC1 goes wrong.The purpose IP of right side circuit message is IPe among the figure, IPb place network segment routing gateway is IPc, so by the ARP request, terminal will use the MAC of IPc correspondence to encapsulate this service message, the FTU communicator uses this MAC1 to carry out message and transmits, and uses MAC2 when MAC1 goes wrong.
It should be noted that: above embodiment is only unrestricted in order to the utility model to be described, the utility model also is not limited in above-mentioned giving an example, all do not break away from technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (7)
1. a FTU communicator is characterized in that, comprising: at least 2 photoelectric conversion modules, at least two optical node ONU, Switching Module, distribution transformer monitoring terminal FTU protocol process module, connector modules and power modules;
One end of one of them photoelectric conversion module is connected with passive optical-fiber network PON, and the other end is connected with one of them ONU; Described ONU is connected with the FTU protocol process module with Switching Module respectively; Described Switching Module is connected with described connector modules; Described FTU protocol process module is connected with described connector modules with Switching Module respectively; Described connector modules out-put supply is to described power module; The power supply of described power module after with voltage transitions offers described photoelectric conversion module, ONU, Switching Module and FTU protocol process module.
2. FTU communicator according to claim 1 is characterized in that, is connected by GPIO, UART or I2C communication interface between described FTU protocol process module and the described connector modules.
3. FTU communicator according to claim 1 and 2 is characterized in that, described connector modules comprises two group 2 * 20 the double pin that is connected with the FTU integrated circuit board.
4. FTU communicator according to claim 1 and 2 is characterized in that, described photoelectric conversion module is connected with PON by the SC interface.
5. an electrical power transmission system is characterized in that, comprising: distribution transformer monitoring terminal FTU, the described FTU communicator of claim 1 to 4, optical line terminal OLT and main website;
Wherein, described main website is connected with described OLT; Described FTU communicator comprises at least two optical node ONU, and described OLT is connected with FTU by described ONU respectively.
6. electrical power transmission system according to claim 5 is characterized in that, is connected by optical branching device between described OLT and the described ONU.
7. according to claim 5 or 6 described electrical power transmission systems, it is characterized in that, be connected by switch between described OLT and the described main website; Or be connected by switch or router between described OLT and the described main website.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012205602437U CN203119898U (en) | 2012-10-30 | 2012-10-30 | FTU communication device and electric power transmission system |
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| CN2012205602437U CN203119898U (en) | 2012-10-30 | 2012-10-30 | FTU communication device and electric power transmission system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601216A (en) * | 2014-12-04 | 2015-05-06 | 大唐移动通信设备有限公司 | Communication device protection device |
| CN104700606A (en) * | 2015-03-26 | 2015-06-10 | 广东电网有限责任公司电力科学研究院 | Electricity meter information reporting system based on plastic optical fibers |
| CN108063987A (en) * | 2017-12-06 | 2018-05-22 | 国网山东电力公司日照供电公司 | A kind of EPON based on MPLS technology pulls hand system |
| CN109074285A (en) * | 2016-04-13 | 2018-12-21 | 法国国家科学研究中心 | data processing system with energy transmission |
-
2012
- 2012-10-30 CN CN2012205602437U patent/CN203119898U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601216A (en) * | 2014-12-04 | 2015-05-06 | 大唐移动通信设备有限公司 | Communication device protection device |
| CN104601216B (en) * | 2014-12-04 | 2017-06-16 | 大唐移动通信设备有限公司 | A kind of communication equipment protection device |
| CN104700606A (en) * | 2015-03-26 | 2015-06-10 | 广东电网有限责任公司电力科学研究院 | Electricity meter information reporting system based on plastic optical fibers |
| CN109074285A (en) * | 2016-04-13 | 2018-12-21 | 法国国家科学研究中心 | data processing system with energy transmission |
| CN108063987A (en) * | 2017-12-06 | 2018-05-22 | 国网山东电力公司日照供电公司 | A kind of EPON based on MPLS technology pulls hand system |
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