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CN104505942B - Power distribution automatic feeder terminal based on data bus and network thereof - Google Patents

Power distribution automatic feeder terminal based on data bus and network thereof Download PDF

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Publication number
CN104505942B
CN104505942B CN201410800321.XA CN201410800321A CN104505942B CN 104505942 B CN104505942 B CN 104505942B CN 201410800321 A CN201410800321 A CN 201410800321A CN 104505942 B CN104505942 B CN 104505942B
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China
Prior art keywords
service unit
data
bus
node
line feed
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Application number
CN201410800321.XA
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Chinese (zh)
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CN104505942A (en
Inventor
沈晓波
陈金旺
李祖福
刘骏腾
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.)
Xiamen Electric Power Engineering Group Co ltd
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Xiamen Power Supply Co of State Grid Fujian Electric Power Co Ltd
Original Assignee
XIAMEN YUANTONG ELECTRONIC TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Xiamen Power Supply Co of State Grid Fujian Electric Power Co Ltd
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Application filed by XIAMEN YUANTONG ELECTRONIC TECHNOLOGY Co Ltd, State Grid Corp of China SGCC, State Grid Fujian Electric Power Co Ltd, Xiamen Power Supply Co of State Grid Fujian Electric Power Co Ltd filed Critical XIAMEN YUANTONG ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN201410800321.XA priority Critical patent/CN104505942B/en
Publication of CN104505942A publication Critical patent/CN104505942A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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Abstract

The invention discloses a power distribution automatic feeder terminal based on a data bus and a network thereof. The feeder terminal comprises at least one test control module and a communication management module, wherein the test control module is in data connection with the communication management module, the communication management module is in data connection with a main station system and a management setting module, a plurality of feeder terminals are connected through a bus for forming a shared bus network, and the communication is carried out among all service units in one feeder terminal and among the plurality of feeder terminals through a bus communication specification. The master and standby switching use and/or the balanced load use can be respectively formed among all service units in the feeder terminals positioned in different data node parts; the plurality of test control modules are respectively arranged in different electric power cabinets and can also be arranged in the same electric power cabinet; the feeder terminal can realize the flexible system deployment and function expansion, the test control modules can be increased or decreased according to requirements, and the distributive installation use and management of software modules and hardware modules can be realized.

Description

Power distribution automation line feed terminals based on data/address bus and its network
Technical field
The present invention relates to a kind of power distribution automation line feed terminals, more particularly, to a kind of power distribution automation based on data/address bus Line feed terminals and its network.
Background technology
Traditional line feed terminals (ftu) adopt in-wall mounting, need to take power distribution station, the space resources of switching station;And And between high-tension switch cabinet and ftu, need special control cable, control cable union joint and ct connecting line to be attached, these ftu With the connecting line of switch cubicle, installing these connecting lines needs to expend substantial amounts of labour force and time;Operating power distribution network at present Often steal phenomenon in equipment, and control cable often becomes one of stolen target, once control cable is stolen, will cause ftu no Method realizes a distant place/remote control on the spot, the safe and stable operation of impact power distribution network.
Traditional line feed terminals are using complete machine structure design, by the observing and controlling for obtaining each parameter information of feeder line therein Module and for process each parameter information communication management module unification connected by link after be installed in same feeder line In terminal cabinet, when scene increases new feeder switch, need through loaded down with trivial details wiring or change whole Feeder Terminal Unit Just enable new feeder line to access, motility is inadequate, poor expandability, and cannot realize the distribution of hardware module and software module Formula is installed and is managed, and realizes the line feed terminals distribution of maneuverability.
Content of the invention
The invention provides a kind of power distribution automation line feed terminals based on data/address bus and its network, which overcome background The deficiencies in the prior art described in technology.
The present invention solves one of technical scheme being adopted of its technical problem:
Based on the power distribution automation line feed terminals of data/address bus, it include at least one be used for gathering feeder line electric parameter data and The control module and being used for of execution control command gathers, monitors, manage in this control module data and send number to main station system The communication management module of the order issuing according to this and to detection and control terminal forwarding main station system, has data in this communication management module Input service unit, data/address bus, data processing service unit, data output service unit, this data input service unit, number By this data/address bus and its bus communication stipulations landform can be followed according to processing between service unit data output service unit Data interaction is become to connect, this control module is connected with data input serving cell data, this data output service unit and main website System data connects.
Among one embodiment: also include being the power management of this control module and communication management module offer working power Module, this power management module includes double alternating current power supplys, and enables the power switching between double alternating current power supplys.
Among one embodiment: this data output service unit has function: sends information to main station system;Receive and process What main station system sent orders and is transmitted to this data processing service unit;
This data processing service unit has a function: receiving data input the real time data of service unit and collect, process, Preserve;Send real time data to data output service unit, man-machine interface service unit;Receiving data output service unit sends Order;Telemetering Data Processing;Remote signalling data is processed;Remote-control data is processed;
This data input service unit has function: provides communication protocol adaptation services;Receive the data of each control module And sent to data processing service unit by bus;Receiving data process service unit send to order and be handed down to correspondence Control module.
Among one embodiment: also include management configuration module, this communication management module also has man-machine interaction service unit, This man-machine interaction service can be by this data/address bus and data input service unit, data processing service unit data output clothes Business unit between formed data interaction connect, this man-machine interaction service unit can also with management configuration module carry out data communication with Realize the configuration to this communication management module.
Among one embodiment: this line feed terminals includes multiple control modules, the plurality of control module is all installed in same cabinet In vivo.
Among one embodiment: this line feed terminals includes multiple control modules, the plurality of control module is installed in difference respectively In cabinet.
What the present invention solved the technical scheme being adopted of its technical problem two is:
Based on the power distribution automation line feed terminals network of data/address bus, it has multiple such as any one of Claims 1-4 The described power distribution automation line feed terminals based on data/address bus it is characterised in that: between the plurality of line feed terminals pass through data Bus connects and is formed a bus network, is communicated by following bus communication stipulations between the plurality of line feed terminals.
Among one embodiment: this line feed terminals can as the one of this bus network increase newly bus node, by with network in Each node is set up communication connection and is realized grid-connected, if there is bus node a in bus network, this line feed terminals is as this bus network The newly-increased bus node c of the one of network, it is set up, with bus node a, the method being connected and includes:
Step 11, node c broadcast;
Step 12, when there is not node c in network registry table, begins setting up the unidirectional connection of node a and c;
Step 13, after connection establishment success, node a sends synchronization request message to node c;
Step 14, after node c receives synchronization request message, adds node a and sets up unidirectional connection with node a;
Step 15, node c sends confirmation of synchronization information to node a;
Step 16, the service that node a is registered to node c sending node a in local node after receiving confirmation of synchronization information Information.
Among one embodiment: this arbitrary service unit in this bus network using before must carry out to local bus node Registration, and log-on message is synchronized to by the whole network other node by local bus node, its registration process includes:
Step 21, starts described arbitrary service unit, submits log-on message to bus;
Step 22, local bus node judges whether this service unit is registered in local node;If unregistered, update this The registration table of ground bus node simultaneously initializes this service unit information, and then execution step 23;
Step 23, according to network topology structure, local bus node sends registration table to other bus nodes and updates message;
Step 24, other bus node registration tablies update.
Among one embodiment: this arbitrary service unit use in this bus network is followed: service registry → service is looked into Look for → service the process of use, be provided with a service unit in described arbitrary service unit and b service unit, it is using inclusion:
Step 31, a service unit and b service unit are registered to bus respectively;
Step 32, bus respectively returns log-on message to a service unit and b service unit;
Step 33, a service unit searches b service unit to bus request;
Step 34, bus returns b service unit information to a service unit;
Step 35, a service unit uses b service unit to bus request and a service unit passes through bus to b service unit Send data;
Step 37, b service unit receives the data of a service unit transmission and by bus to a service unit return information.
Among one embodiment: should be located between the data input service unit in the line feed terminals at different bus node, Active-standby switch can be constituted between data processing service unit, between data output service unit respectively use and/or equally loaded Use.
Compared with background technology, it has the advantage that the technical program
Include control module and communication management module based on the power distribution automation line feed terminals of data/address bus, this control module This communication management module of data cube computation, this communication management module data cube computation main station system and management setup module, the plurality of feedback Can be connected by bus between line terminal and be incorporated to bus network with by way of increasing node, form a shared bus network Network, all by following bus communication stipulations between each service unit in this line feed terminals and between multiple line feed terminals Communicated.Active-standby switch can be constituted respectively between each service unit in this line feed terminals at different bus node makes With and/or equally loaded use;When having multiple control modules in this line feed terminals, the plurality of control module can be respectively placed in not In same electric power cabinet body, also it is placed in same electric power cabinet body;This line feed terminals is made to realize flexible system deployment and function expansion Exhibition, can increase or decrease control module as needed, realize software module and the distributed of hardware module is installed and used and managed, Line feed terminals are divided in modules installing and switch cubicle, without the connection of the control wiring such as cable of distance, reduces cost, Guarantee this line feed terminals reliability service.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 depicts the hardware configuration of the power distribution automation line feed terminals based on the data/address bus arrangement in cabinet and illustrates Figure.
Fig. 2 depicts overall system architecture and the data flow figure of the power distribution automation line feed terminals based on data/address bus.
Fig. 3 depicts the node type network connection schematic diagram of the power distribution automation line feed terminals network based on data/address bus.
The step that in the bus network that Fig. 4 depicts in the present embodiment, newly-increased node c is connected with bus node a and b foundation Figure.
Fig. 5 depicts register flow path figure in bus for the service unit described in the present embodiment.
Fig. 6 depicts the employment mechanism block diagram of the service unit described in the present embodiment.
Fig. 7 depicts in the software distribution application described in the present embodiment, and each service unit is all installed in same feedback Schematic diagram in line terminal.
Fig. 8 depicts in the software distribution application described in the present embodiment, the feeder line that should be located at different bus node Form the schematic diagram that active-standby switch uses and/or equally loaded uses between the service unit of terminal
Fig. 9 depicts in the hardware distribution formula application described in the present embodiment, control module in this line feed terminals and logical Letter management module is placed in the schematic diagram in same electric power cabinet body.
Figure 10 depicts in the hardware distribution formula application described in the present embodiment, the plurality of control module and telecommunication management mould Block is respectively placed in the schematic diagram in different electric power cabinet bodies.
Specific embodiment
Refer to Fig. 1 and Fig. 2, based on the power distribution automation line feed terminals of data/address bus, it includes at least one control module 10th, communication management module 20, power management module 30 and management configuration module 40, this control module 10 this communication tube of data cube computation Reason module, this communication management module 20 data cube computation main station system and management configuration module 40, this control module 10 is used for gathering Feeder line electric parameter data and execution control command, this communication management module 20 is used for gathering, monitors, manages in this control module 10 Data simultaneously sends data to main station system 50 and forwards the order that issues of main station system 50, this power management to detection and control terminal 10 Module 30 can provide working power for this control module 10 and communication management module 20 and this power management module 30 includes double cross Stream power supply, and enable the power switching between double alternating current power supplys.This management configuration module 40 is used for this communication tube of configuration management Reason module 20.
There is in this communication management module 20 data input service unit, data/address bus 25, data processing service unit, number According to output service unit and man-machine interaction service unit 24, this data input service unit, data processing service unit 2, man-machine By this data/address bus 25 and its bus communication stipulations can be followed between interactive service unit 14 data output service unit 13 Ground forms data interaction and connects, and this control module 10 is connected with data input serving cell data, this data output service unit With main station system 50 data cube computation, this man-machine interaction service unit 24 and management configuration module 40 data communication are to realize this is led to The configuration of letter management module 20.Wherein, each service unit is software service unit, they be carried on this communication management module this On one hardware development platform.
This data/address bus 25 is the core of each serving cell data communication, and it has following function: in management bus network Each node;Each service unit registration, lookup, use, cancellation in responsible bus network;Balance the load of each bus node;
This data output service unit 23 has a following function: according to the data forwarding table being configured to main station system 50 Send corresponding information;Receive and process main station system 50 transmission order (remote control, pair when etc. order) and be transmitted to this data processing Service unit;
This data processing service unit has following function: receiving data inputs the real time data of service unit 21 and converges Always, process, preserve;Send real time data to data output service unit 23, man-machine interface service unit 24;Receiving data exports Service unit 23 send order (remote control, pair when etc. order);Telemetering Data Processing, enters row coefficient, skew to telemetry receiving value Revise, judge whether out-of-limit, periodic recording is maximum and/or minima, configuration cycle event etc.;Remote signalling data is processed, to remote signalling Reception value is made whether to negate correction, displacement record, displacement cumulative frequency record, remote recording, configuration type of alarm etc.;Remote control Data processing, remote control conditional judgment, remote control logout etc.;
This data input service unit 21 has following function: provides communication protocol adaptation services;Receive each control module 10 data is simultaneously sent to data processing service unit by bus;Receiving data process service unit send to order (distant Control, pair when etc. order), this command process can be converted into Standards Code frame and be handed down to corresponding control module 10;
This man-machine interface service unit 24 has following function: provides configuration interface service for communication management module 20;Obtain Take real time data;Check historical record, system journal;Execution remote control, pair when etc. order;Obtain the parameter of all service units; Allow parameter is modified;Realize the whole network time adjustment function.
Refer to Fig. 3, can be connected by data/address bus between the plurality of line feed terminals and form a bus network, this feeder line Terminal can be incorporated to this bus network in the form of increasing bus node, by following bus communication rule between the plurality of line feed terminals About communicated, this line feed terminals increases bus node newly as the one of this bus network, by building respectively with node each in network Vertical communication connection is realized grid-connected.
Refer to Fig. 4, setting tool has the bus node a of this bus network, this line feed terminals is one new as this bus network Increase bus node c, it is set up, with bus node a, the method being connected and comprises the steps:
Step 11, node c broadcast opt_hello;
Step 12, when there is not node c in network registry table (do not exist in network the address of node c, machine name, The information such as group), begin setting up the unidirectional connection conntcpserv of node a and c;
Step 13, after connection establishment success, node a sends synchronization request message opt_conn_syn (containing local to node c Nodal information);
Step 14, after node c receives synchronization request message opt_conn_syn, add node a and with node a set up unidirectional Connect;
Step 15, node c sends confirmation of synchronization information opt_conn_syn_ack to node a;
Step 16, node a receives after confirmation of synchronization information opt_conn_syn_ack to node c sending node a local The information on services that node is registered.
In the same manner, the communication connection step of other nodes such as node b in bus node c and bus network is with node c and section The Connection Step of point a.
Refer to Fig. 5, the data input service unit in the communication management module of this line feed terminals, data processing service list Arbitrary service unit in unit, data output service unit and man-machine interaction service unit is in this bus network using front necessary Registered to local bus node, and log-on message is synchronized to by the whole network other node by local bus node;Its registration Process includes:
Step 21, starts described arbitrary service unit, to bus submit to log-on message (include service name, type, Group, active and standby, whether load balancing, the information such as allow to access);
Step 22, local bus node judges whether this service unit is registered in local node;If registered, to bus Registering unit returns error message, if unregistered, the registration table of local bus node updates local bus node simultaneously initializes this Service unit information, and then execution step 23;
Step 23, according to network topology structure, local bus node sends registration table to other bus nodes and updates message;
Step 24, other bus node registration tablies update.
Refer to Fig. 6, the data input service unit in the communication management module of this line feed terminals, data processing service list Use in this bus network for the arbitrary service unit in unit, data output service unit and man-machine interaction service unit is abided by Follow: the process that service registry → service search → service uses, it is provided with a service unit in described arbitrary service unit and b clothes Business unit, it uses and comprises the following steps:
Step 31, a service unit and b service unit are registered to bus respectively;
Step 32, bus respectively returns log-on message to a service unit and b service unit;
Step 33, a service unit searches b service unit to bus request;
Step 34, bus returns b service unit information to a service unit;
Step 35, a service unit uses b service unit to bus request and a service unit passes through bus to b service unit Send data;
Step 37, b service unit receives the data of a service unit transmission and by bus to a service unit return information.
Of the present invention based on the power distribution automation line feed terminals of data/address bus be capable of on software and hardware point Cloth is applied:
Distributed Application on software is divided into following two situations:
(1) refer to Fig. 7, this each service unit being installed in the same line feed terminals of local bus node (includes number According to input service unit 21, data processing service unit, data output service unit 23, man-machine interaction service unit 24 and other Service unit) by the information exchange between the realization of this data/address bus 25 and the data with control module 10 and main station system 50 Connect interaction.
(2) refer to Fig. 8, the service unit that should be located in each line feed terminals of different bus node (includes data input Service unit 21, data processing service unit, data output service unit 23, man-machine interaction service unit 24 and other services are single Unit) between by data/address bus 25 realize information exchange and can each constitute active-standby switch using and/or equally loaded use.Example As when the data output service unit 23 in a certain line feed terminals is with main station system 50 communication overload, presented by another The data output service unit 23 sharing data output of line terminal, realizes load balancing;At the data of a certain line feed terminals When reason service unit breaks down, the data processing service unit of another line feed terminals automatically engages, to ensure multiple stage feeder line Terminal can keep normally using, and realize active-standby switch and use.
Distributed Application on hardware is divided into following two situations:
(1) refer to Fig. 9, when there is multiple control module 10 in this line feed terminals, can be by this line feed terminals Multiple control modules 10 are placed in same electric power cabinet body.
(2) refer to Figure 10, when there is multiple control module 10 in this line feed terminals, can be by the plurality of control module 10 can be respectively placed in different electric power cabinet bodies, for example, multiple control modules 10 are installed in respectively and need the different high of measurement Compress switch in cabinet, and this communication management module 20 and power management module 30 are placed in communication cabinet.
The above, only present pre-ferred embodiments, therefore can not limit according to this present invention enforcement scope, that is, according to Equivalence changes and modification that the scope of the claims of the present invention and description are made, all should still belong in the range of the present invention covers.

Claims (11)

1. the power distribution automation line feed terminals based on data/address bus it is characterised in that: include at least one and be used for gathering feeder line electricity ginseng The control module and being used for of amount data and execution control command gathers, monitors, manage in this control module data and to system of main website System sends data and the communication management module of the order issuing to detection and control terminal forwarding main station system, in this communication management module There is data input service unit, data/address bus, data processing service unit, data output service unit, this data input takes By this data/address bus and its bus communication can be followed between business unit, data processing service unit data output service unit Stipulations form data interaction and connect, and this control module is connected with data input serving cell data, this data output service unit With main station system data cube computation.
2. the power distribution automation line feed terminals based on data/address bus according to claim 1 it is characterised in that: also include energy There is provided the power management module of working power for this control module and communication management module, this power management module includes double cross stream Power supply, and enable the power switching between double alternating current power supplys.
3. the power distribution automation line feed terminals based on data/address bus according to claim 1 it is characterised in that:
This data output service unit has function: sends information to main station system;Receive and process the life of main station system transmission Make and be transmitted to this data processing service unit;
This data processing service unit has function: receiving data inputs the real time data of service unit and collects, processes, protects Deposit;Send real time data to data output service unit, man-machine interface service unit;Receiving data exports what service unit sent Order;Telemetering Data Processing;Remote signalling data is processed;Remote-control data is processed;
This data input service unit has function: provides communication protocol adaptation services;Receive the data of each control module and lead to Cross bus to send to data processing service unit;Receiving data process service unit send to order and be handed down to corresponding survey Control module.
4. the power distribution automation line feed terminals based on data/address bus according to claim 1 it is characterised in that: also include manage Reason configuration module, this communication management module also has man-machine interaction service unit, and this man-machine interaction service can be total by this data Form data interaction between line and data input service unit, data processing service unit data output service unit to be connected, This man-machine interaction service unit can also be communicated with management configuration module to realize the configuration to this communication management module.
5. the power distribution automation line feed terminals based on data/address bus according to any one of claim 1 to 4, its feature exists In: this line feed terminals includes multiple control modules, and the plurality of control module is all installed in same cabinet.
6. the power distribution automation line feed terminals based on data/address bus according to any one of claim 1 to 4, its feature exists In: this line feed terminals includes multiple control modules, and the plurality of control module is installed in different cabinets respectively.
7. the power distribution automation line feed terminals network based on data/address bus it is characterised in that: have multiple as Claims 1-4 Any one of the power distribution automation line feed terminals based on data/address bus it is characterised in that: between the plurality of line feed terminals Connect and formed a bus network by data/address bus, led to by following bus communication stipulations between the plurality of line feed terminals Letter.
8. the power distribution automation line feed terminals network based on data/address bus according to claim 7 it is characterised in that: this feedback Line terminal can increase bus node newly as the one of this bus network, is realized simultaneously by setting up communication connection with node each in network Net, if there is bus node a in bus network, this line feed terminals as this bus network one increase newly bus node c, its with Bus node a sets up the method connecting and includes:
Step 11, node c broadcast;
Step 12, when there is not node c in network registry table, begins setting up the unidirectional connection of node a and c;
Step 13, after connection establishment success, node a sends synchronization request message to node c;
Step 14, after node c receives synchronization request message, adds node a and sets up unidirectional connection with node a;
Step 15, node c sends confirmation of synchronization information to node a;
Step 16, the information on services that node a is registered to node c sending node a in local node after receiving confirmation of synchronization information.
9. the power distribution automation line feed terminals network based on data/address bus according to claim 7 it is characterised in that: this One service unit in this bus network using before must be registered to local bus node, and by local bus node will Log-on message is synchronized to the whole network other node, and its registration process includes:
Step 21, starts described arbitrary service unit, submits log-on message to bus;
Step 22, local bus node judges whether this service unit is registered in local node;If unregistered, update locally total The registration table of line node simultaneously initializes this service unit information, and then execution step 23;
Step 23, according to network topology structure, local bus node sends registration table to other bus nodes and updates message;
Step 24, other bus node registration tablies update.
10. the power distribution automation line feed terminals network based on data/address bus according to claim 7 it is characterised in that: should Use in this bus network for arbitrary service unit is followed: the process that service registry → service search → service uses, and is provided with A service unit in described arbitrary service unit and b service unit, it is using inclusion:
Step 31, a service unit and b service unit are registered to bus respectively;
Step 32, bus respectively returns log-on message to a service unit and b service unit;
Step 33, a service unit searches b service unit to bus request;
Step 34, bus returns b service unit information to a service unit;
Step 35, a service unit uses b service unit to bus request and a service unit passes through bus and sends to b service unit Data;
Step 37, b service unit receives the data of a service unit transmission and by bus to a service unit return information.
The 11. power distribution automation line feed terminals networks based on data/address bus according to any one of claim 7 to 10, its It is characterised by: this is located between the data input service unit in the line feed terminals at different bus node, data processing service Active-standby switch can be constituted between unit, between data output service unit respectively use and/or equally loaded use.
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