New PLC networking structures and method and corresponding novel intelligent electric meter carrier moduleTechnical field
The present invention relates to electric power network technique field, and in particular to a kind of new PLC（Power Line Communication）Networking structure and method and corresponding novel intelligent electric meter carrier module.
Background technology
Intelligent electric meter has been popularized in current national grid, and as responsible transmission terminal ammeter（Intelligent electric meter）And pipeReason terminal（Concentrator）Information concentrator carrier module also large-scale use.Arrowband being used current carrier module moreTechnology, traffic rate is than relatively low in tens Kbps, it is impossible to meet the real-time Communication for Power demand that national grid is increasingly improved.
HomePlug GreenPhy（Broadband power subchannel communication protocol standard）It is that one kind is widely used to national gridIn WiBro communication protocol.According to the agreement, in power grid application, management terminal（Concentrator）Local carrier module be referred to asCCO ends, it is responsible for accessing common intelligent electric meter individual event carrier module distribution TEI ID（Terminal Equipment ID）.
Because the field for specifying TEI in agreement is 8 bits, so in a HomePlug GreenPhy network most255 network equipments can be accessed more（Note：TEI：0 retains without TEI：1 is CCO ends itself）, therefore, in practical application,The supported intelligent electric meter quantity in CCO ends at most can only achieve 254 in one electric net platform region, and this causes live often to needThe networking for increasing the quantity at CCO ends to solve platform area intelligent electric meter accesses problem entirely, as shown in figure 1, being prior artPLC networkings.
To sum up, the power line communication of prior art（PLC）Networking has limitation, it is necessary to propose to access network number of devicesOne kind can also realize the technical scheme of the access of a large amount of intelligent electric meters, to reach under conditions of concentrator CCO ends quantity is not increasedTo simplified software complexity, it is to avoid the problem that multiple CCO ends are mutually synchronized.
The content of the invention
It is an object of the invention to provide a kind of new PLC networking structures and method and corresponding novel intelligent electric meter carrier waveModule, in the case of a CCO end is currently used in fact, the novel intelligent electricity of Sub-CCO mode of operation logics is increased by coordinatingTable carrier module, former pure STA logics are changed into the bimodulus logic of the parallel time-sharing works of Sub-CCO, realize more intelligent electric metersAccess, and at most up to 64516 accesses of intelligent electric meter.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of new PLC networking structures, are communicatively coupled by PLC and HomePlug GreenPhy WiBro communication protocols,It is characterized in that, comprising：
Concentrator；
Concentrator carrier module, with a CCO end, communicates to connect with the concentrator；
At least one novel intelligent electric meter carrier module, communicates to connect with the concentrator carrier module respectively；Described in eachNovel intelligent electric meter carrier module includes the STA units and Sub-CCO units of concurrent working respectively；
At least one ammeter network, is connected respectively each novel intelligent electric meter carrier module；Each ammeter network is wrapped respectivelyContain：Some common intelligent electric meter individual event carrier modules and some intelligent electric meters, each intelligent electric meter communicate to connect each respectivelyCommon intelligent electric meter individual event carrier module, each common intelligent electric meter individual event carrier module has STA functions respectively；The concentrationDevice carrier module, some novel intelligent electric meter carrier modules and some common intelligent electric meter individual event carrier modules carry out autonomous groupNet.
Above-mentioned new PLC networking structures, wherein：
The number of the concentrator carrier module is 1；
The number of the novel intelligent electric meter carrier module is 1 ~ 254；
In ammeter network corresponding to each described novel intelligent electric meter carrier module common intelligent electric meter individual event carrier module withAnd the number of intelligent electric meter is respectively 1 ~ 254.
A kind of network-building method of new PLC networking structures, it is characterized in that, comprise the steps of：
S1, concentrator carrier module start, into the mode of operation of concentrator local routing module；
S2, novel intelligent electric meter carrier module start, and it passes through STA units and adds concentrator routing module master network, and obtainsMaster network TEI ID；
After master network TEI ID are obtained, its Sub-CCO unit starting simultaneously waits each general for S3, novel intelligent electric meter carrier moduleLogical intelligent electric meter individual event carrier module is added, and is each common intelligent electric meter individual event carrier module distribution sub-network Sub TEIID；
The table number of each intelligent electric meter is uploaded to concentrator carrier wave by S4, novel intelligent electric meter carrier module by its STA unitModule, completes networking.
A kind of novel intelligent electric meter carrier module, it is characterized in that, comprising：
The STA units and Sub-CCO units of concurrent working.
The present invention has advantages below compared with prior art：In the case of currently using a CCO end in fact, by coordinatingIncrease the novel intelligent electric meter carrier module of Sub-CCO mode of operation logics, the i.e. increase of firmware program to become former pure STA logicsThe access of more intelligent electric meters is realized for the bimodulus logic of STA and the parallel time-sharing works of Sub-CCO, and at most up to 64516The access of individual intelligent electric meter.
Brief description of the drawings
Fig. 1 is the network topological diagram of the PLC networkings of prior art；
Fig. 2 is the net topology figure of new PLC networkings of the invention.
Specific embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Fig. 2 a kind of new PLC networking structures, are assisted by PLC and HomePlug GreenPhy broadband connectionsView is communicatively coupled, and it is included：Concentrator 1；Concentrator carrier module 2, is a CCO end（Alternatively referred to as routing module）,Communicated to connect with the concentrator 1；At least one novel intelligent electric meter carrier module is 31 or 31 ~ 3N in figure, respectively withThe concentrator carrier module 2 is communicated to connect；Novel intelligent electric meter carrier module described in each includes concurrent working respectivelySTA units（Alternatively referred to as STA individual events unit）And Sub-CCO units（Alternatively referred to as logic routing unit）；At least one electricityTable network is 41 or 41 ~ 4N in figure, is connected respectively each novel intelligent electric meter carrier module；Each ammeter network pointDo not include：Some common intelligent electric meter individual event carrier modules and some intelligent electric meters, each intelligent electric meter are communicated to connect respectivelyEach common intelligent electric meter individual event carrier module, each common intelligent electric meter individual event carrier module has STA functions respectively, i.e.,STA functions specified in GreenPhy standards；If the concentrator carrier module, some novel intelligent electric meter carrier modules andDo common intelligent electric meter individual event carrier module carries out autonomous networking according to GreenPhy agreements, and intelligent electric meter and concentrator are equipmentTerminal 1 is not involved in.
The electrical grid transmission process of one standard is the generation control message of concentrator 1 communicated to connect with cloud server, andConcentrator carrier module 2 is delivered to by RS232 buses；Concentrator carrier module 2 will control message to pass through HomePlugGreenPhy agreements, modulation is added on the carrier wave of power line Power Line 1376.2；The individual event ammeter module of distal end（I.e.Common intelligent electric meter individual event carrier module and novel intelligent electric meter carrier module）The carrier signal of demodulated power line, will solveThe control message of precipitation is delivered to connected ammeter unit by RS485 buses.
According to above-mentioned new PLC networking structures, it can be seen that the number of the concentrator carrier module is 1；It is described newThe number of type intelligent electric meter carrier module is 1 ~ 254；Ammeter net corresponding to each described novel intelligent electric meter carrier moduleThe number of common intelligent electric meter individual event carrier module and intelligent electric meter is respectively 1 ~ 254 in network, may finally realize at mostThe network capacity of 254 × 254=64516.In actual application, technical staff increases the new intelligence of respective amount as neededCan electric meter carrier wave module.
Whole networking process of the invention is the important algorithm of whole PLC, and its general principle is, in HomeplugGreenPhy is defined, and concentrator routing module sends beacon frame (Beacon), after common intelligent electric meter individual event carrier module is received,Association request frame (AssocReq) is sent, concentrator routing module occurs connection request and ratifies frame (AssocCnf) after receiving.Novel intelligent electric meter carrier module in the present invention is also CCO ends for common intelligent electric meter individual event carrier module, and its is rightIt is general module for the module of concentrator road.The novel intelligent electric meter of Beacon, AssocReq, AssocCnf in inventionCan all occur on carrier module.
The present invention also proposes a kind of network-building method of new PLC networking structures, comprises the steps of：
S1, concentrator carrier module start, into the mode of operation of concentrator local routing module；
S2, novel intelligent electric meter carrier module start, and it passes through STA units and adds concentrator routing module master network, and obtainsMaster network TEI ID；
After master network TEI ID are obtained, its Sub-CCO unit starting simultaneously waits each general for S3, novel intelligent electric meter carrier moduleLogical intelligent electric meter individual event carrier module is added, and is each common intelligent electric meter individual event carrier module distribution sub-network Sub TEIID；
The table number of each intelligent electric meter is uploaded to concentrator carrier wave by S4, novel intelligent electric meter carrier module by its STA unitModule, completes networking.
After network foundation, the communication between concentrator and each intelligent electric meter will be by novel intelligent electric meter carrier moduleIn major network（Novel intelligent electric meter carrier module is constituted with concentrator carrier module）With each subnet（Novel intelligent electric meter carrier wave mouldBlock and common intelligent electric meter individual event carrier module）Directly bridged and forwarded.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentionedDescription is not considered as limitation of the present invention.After those skilled in the art have read the above, for of the inventionVarious modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.