CN105610615A - Method and system for dispatching power distribution network based on software-defined network - Google Patents
Method and system for dispatching power distribution network based on software-defined network Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a method and system for dispatching a power distribution network based on a software-defined network. The system comprises SDN controllers, an openflow switch, all kinds of intelligent power distribution terminals, comprehensive network management systems, and all kinds of application programs in the top layer, wherein the SDN controllers are used for managing different areas and different grades; the system is characterized in that the various SDN controllers are divided into a sub-controller, a main controller and a master controller according to requirements of a topological structure of the power distribution network, wherein the sub-controller only maintains a network logic topological graph in the local area; the main controller maintains a network logic topological graph in some adjacent areas; and the master controller maintains a logic topological graph of the whole network. Unified management and control of the whole network are realized by operating the comprehensive network management systems and all kinds of application programs over master control.
Description
Technical field
The invention belongs to intelligent distribution network communication technical field, relate in particular to a kind of power distribution network dispatching method and system based on software defined network.
Background technology
Along with the continuous expansion of State Grid Corporation of China's distribution communication network scale, owing to lacking unified management and control plane, and the self-control of Distribution Network Communication device protocol, therefore network O&M efficiency is very low, and the personnel amount of being responsible for network O&M is many, cannot meet the demand for development of company. In addition, owing to controlling and Forwarding plane all concentrates in Distribution Network Communication equipment, make Network new operations, newly function realize underaction, cannot adapt to the flexible demand of Guo Wang company distribution business development. On the one hand, if can not with the interface compatibility of communication equipment, distribution new business and function cannot be used, therefore the serious slow distribution new business of the existing otherness of distribution communication device interface and function are pushed the time of application to. On the other hand, existing distribution communication network management cannot be realized PON, EPA and wireless unified control and management.
Software defined network (SDN) is by the separating with data retransmission plane (openflow switch) across purchasing plane (controller) year of network, and realizes a kind of new network framework of able to programmeization control. The feature of SDN network is as follows: 1) datum plane is absorbed in forwarding, and control plane has global view to Internet resources; 2) communication division between network operating system and traffic performance adaptation and hardware device realizes by setting protocol programming; 3) can be according to upper-layer user's different business demand, flexible and efficient ground allocation schedule basic network resource.
Domestic software define grid is just at the early-stage at present, and aspect power communication, application is very few. But a lot of thoughts of SDN can be good at solving the deficiency in current power communication, therefore SDN technology is incorporated in power communication and seems particularly necessary.
Summary of the invention
For solving the deficiency in distribution communication network, the present invention is incorporated into the thought of software defined network in power distribution network, make the collected information of each distribution terminal can be by efficient, comprehensive utilization, the incompatible situation of each manufacturer network management system before can solving, has proposed a kind of power distribution network dispatching method and system based on software defined network simultaneously.
For achieving the above object, the present invention adopts following technical scheme, the power distribution network dispatching patcher that the present invention is based on software defined network comprises management SDN controller zones of different, different brackets, openflow switch, Intelligent power distribution terminal and Integrated Network Management System, each SDN controller need to be divided into sub-controller, master controller and master controller according to power distribution network topological structure described in its structural feature.
Wherein said sub-controller is safeguarded the cellular logic topological diagram of one's respective area, and described master controller is safeguarded the cellular logic topological diagram in adjacent several regions, and described master controller is safeguarded the logical topology figure of whole network; And on master control, move Integrated Network Management System, to whole network unified management and control.
As a kind of preferred version, each quasi-controller of the present invention is all positioned at different substations and is connected with openflow switch or the controller of management and control separately by wired or wireless mode.
As another kind of preferred version, openflow switch of the present invention is connected with Intelligent power distribution terminal or the sub-controller of management and control separately by wired or wireless mode.
As another kind of preferred version, Intelligent power distribution terminal of the present invention is for having station institute terminal (DTU), line feed terminals (FTU), the distribution transformer terminals (TTU) of openflow interface or Additional Agreement converter.
As another kind of preferred version, protocol converter of the present invention is openflow agreement by Distribution Network Communication protocol conversion, and is connected on outward on the intelligent terminal that does not configure openflow agreement by wired mode, makes intelligent terminal and openflow switch communication.
The power distribution network dispatching method that the present invention is based on software defined network comprises: in the time having power distribution network to break down or other change, described Intelligent power distribution terminal sends signal, whether the openflow switch inspection being connected with described Intelligent power distribution terminal has the stream table of coupling, carry out according to stream table if having, report successively its controller connecting if do not have, then after calculating and analyze by described controller, send corresponding control instruction and control described intelligent terminal and move accordingly.
As a kind of preferred version, the present invention, in the time having new equipment to add or leave system, comprises the following steps.
Step S201: the intelligent power distribution equipment of new access sends to the openflow switch of its connection the HELLO message that comprises self information.
Step S202: the sub-controller that described Openflow switch connects to it sends a certain port of Port_status message notifying sub-controller new equipment access, has comprised the relevant information of described equipment in message.
Step S203: described sub-controller adds this node the one's respective area network abstract topological graph of self maintained, and the described equipment newly adding is carried out to relevant configuration, the simultaneously network topological information of a superior renewal of the equipment one's respective area of controllers at different levels.
Step S204: described Openflow switch sends HELLO_Resp message to described new equipment, has wherein comprised the order and the corresponding configuration information that allow access.
Step S205: described new equipment just can send corresponding data information to described openflow switch after having configured by received configuration information.
As another kind of preferred version, when the message that the present invention sends when described Intelligent power distribution terminal does not mate stream table in connected openflow switch, adopt steps of processing.
Step S403: the sub-controller that described openflow switch connects to it sends Packet_in message.
Step S404: described sub-controller checks the abstract network topological diagram of self maintained, whether destination node is in one's respective area.
Secondly, the present invention when in the network topology that the destination node that described Intelligent power distribution terminal will be communicated by letter is managed at its connexon controller, employing steps of processing.
Step S405: the abstract network topology figure safeguarding according to described sub-controller calculates optimal path, and link establishment Information encapsulation is sent in Packet_out message to described openflow switch, and superior controller transmission update information is upgraded network topology structure.
Step S406: described openflow switch is shown according to described Packet_out message amendment self stream, and described infomational message is sent at designated port.
Step S407: described openflow switch retains this forwarding flow table within a certain period of time directly forwards according to this stream table in the time that have identical destination node message next time again.
In addition, the present invention when in the network topology that the destination node that described Intelligent power distribution terminal will be communicated by letter is not managed at its connexon controller, adopts steps of processing.
Step S408: the master controller that described sub-controller connects to it sends Packet_in message.
Step S409: described master controller calculates optimal path according to the abstract network topological diagram of self maintained, and link establishment Information encapsulation is sent in Packet_out message to described sub-controller, and superior controller transmission update information is upgraded network topology structure.
Step S410: described Packet_out message is issued to described openflow switch by described sub-controller.
Step S411: described openflow switch is shown according to described Packet_out message amendment self stream, and described infomational message is sent at designated port.
Step S412: described openflow switch retains this forwarding flow table within a certain period of time directly forwards according to this stream table in the time that have identical destination node message next time again.
Beneficial effect of the present invention.
The technology of software defined network is incorporated in distribution communication network, makes to become more flexible, efficient at script relative stiffness, inaccessible power distribution network. It is more efficient by the forwarding of distribution communication network net bottom layer that software defined network forwards-control the framework separating, simultaneously in the present invention, successively concentrated controller can be realized unified management and the control of the whole network, the problem that well having solved each webmaster that in current distribution communication network, producer too much causes can not be compatible, bottom-up information can not fully effectively utilize. The control able to programme of software defined network, makes the management of power distribution network convenient, according to the interoperability that just can complete Intelligent power distribution terminal and Integrated Network Management System shown in the message interaction flow chart in the present invention simultaneously.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention will be further described. Protection domain of the present invention is not only confined to the statement of following content.
Fig. 1 is the power distribution network dispatching patcher building-block of logic that the present invention is based on software defined network.
Fig. 2 is the flow chart of system while having new equipment to add power distribution network.
Fig. 3 be while having new equipment to add power distribution network described in the information interaction flow graph of Intelligent power distribution terminal and each controller.
Fig. 4 is the flow chart that described system is carried out message repeating.
Fig. 5 is without the corresponding stream table of certain message and the information interaction flow graph of destination node in sub-controller management and control region in described openflow switch.
Fig. 6 is without the corresponding stream table of certain message and the not information interaction flow graph in sub-controller management and control region of destination node in described openflow switch.
Fig. 7 is the information interaction flow graph of described Integrated Network Management System active inquiry Intelligent power distribution terminal information and state.
Fig. 8 is the information interaction flow graph of described Integrated Network Management System ACTIVE CONTROL Intelligent power distribution terminal.
Fig. 9 is the protocol converter hardware configuration schematic diagram that a kind of Intelligent power distribution terminal of the present invention is unified management and control.
Figure 10 is that a kind of Intelligent power distribution terminal of the present invention is unified the protocol converter of management and control to the process chart of equipment message.
Figure 11 is the software flow pattern of protocol converter to equipment configuration that a kind of Intelligent power distribution terminal of the present invention is unified management and control.
Figure 12 is the protocol converter protocol conversion module schematic diagram that a kind of Intelligent power distribution terminal of the present invention is unified management and control.
Detailed description of the invention
Fig. 1 is the logical architecture figure of the power distribution network dispatching patcher based on software defined network. the displaying of this figure image the central controlled thought of layering of the present invention. each Intelligent power distribution terminal of bottom has gathered Various types of data and the openflow switch to its connection by convergence in power distribution network, information is forwarded to corresponding destination address by each openflow switch, relevant information is reported to corresponding sub-controller simultaneously, the sub-controller that is positioned at different distribution subnets converges and reports to master controller by the information of one's respective area, after converging the information of several subnets within the scope of institute's management and control by each master controller again, report to master controller, master control place is converged information friendship to Integrated Network Management System and each application program on upper strata of the whole network and is processed accordingly. then the fruit of processing is moved accordingly, as to administrative staff's prompting, reporting errors or directly control corresponding Intelligent power distribution terminal and move accordingly.
Similar with the networking structure of handing in hand of power distribution network, in two subnets, there is respectively an openflow switch in completing normal function, also to be connected by wired mode with of an adjacent distribution subnet openflow switch, make the information of each subnet can not only converge at top layer to realize the intercommunication of each subnet information, intercommunication that also can guarantee information on stratum, has also improved the reliability of communication network simultaneously. Described each openflow switch is connected with all kinds of Intelligent power distribution terminals downwards, and it can be also wireless that this connection can make wired.
Intelligent power distribution terminal shown in Fig. 1 comprises intelligent station institute terminal (DTU), Intelligent FTU (FTU), intelligent distribution transformer terminals (TTU), and the position that they distribute disperses relatively. Wherein DTU is generally arranged in Switching Station, switchgear house, ring main unit; FTU is positioned on feeder line; TTU is positioned at each transformer place.
Described Intelligent power distribution terminal can be divided into " one is distant " equipment, " two is distant " equipment and " three is distant " equipment by scheduling flow. Wherein " one is distant " refers to remote signalling, and " two is distant " refers to remote signalling and remote measurement, and " three is distant " refers to remote signalling, telemetry and telecommand. Wherein remote signalling content comprises the position of the switch, protection actuating signal, emergency stop valve trip signal, anticipating signal, channel failure signal, main system power cut signal, accident fail address signal. Remote measurement content comprises that transforming plant main transformer and bus have, reactive power, each side electric current, voltage, electric weight, distribution line electric current, electric weight. Remote control is the running status that changes relevant device according to teleinstruction.
Described each Intelligent power distribution terminal requires to have openflow interface, for not supporting openflow association
The Intelligent power distribution terminal of view will add an external protocol converter for it, the function of described protocol converter is to be openflow agreement by various types of communication protocol conversion conventional in power communication, makes non-openflow equipment to receive and to send openflow message by protocol converter.
Due to Fig. 1 limited space, whole network middle part molecular Control device, master controller and each distribution subnet in figure, are only drawn, in practical application, the quantity of equipment and the scale of network are all quite huge, and the larger network architecture just more can embody advantage of the present invention place.
The invention allows for a kind of dispatching method based on software defined network. Timely identification and configuration, the trans-regional forwarding of power distribution network data dispatching bag, the comprehensive network management equipment that can realize newly adding Distribution Network Equipment by dispatching method of the present invention carry out real time remote control etc. to the Intelligent power distribution terminal of bottom.
When the flow chart that has new equipment to add the action of fashionable whole system as shown in Figure 2. If it is fashionable that described system has new Intelligent power distribution terminal equipment to add, the openflow switch that first terminal connects to it sends hello packet, has comprised the relevant essential information of new access user self in hello packet. After receiving hello packet, described openflow switch can send Port_State message, the relevant information of the relevant information that has comprised access device in this message and the switch ports themselves that connects to the sub-controller of its connection. Sub-controller is received and is first confirmed newly to add whether equipment is legal, safety after Port_State message, if described equipment meets the demands, sub-controller can add this equipment in the cellular logic topological diagram of self maintained, then logical topology figure is upgraded to result and reports the master controller of its connection, described master controller reports master controller again and upgrades successively corresponding cellular logic topological diagram, finally by Integrated Network Management System, result visualization is reported to administrative staff. Described sub-controller carries out relevant configuration according to the relevant information of new equipment to new equipment and corresponding openflow switch simultaneously, and the result of configuration is put into Configuration message be issued to corresponding openflow switch, send Hello_Resp message by described openflow switch to new equipment again, wherein comprised the relevant information of new device configuration and the information that allows new equipment to add, new equipment just can send the data superior of collecting after requiring to have configured according to message.
Fig. 3 has new Intelligent power distribution terminal to add fashionable message interoperability flow graph.
In the time that Intelligent power distribution terminal will or be sent to a certain destination address on request by the data active being collected, its flow chart as shown in Figure 4. The data packing that described Intelligent power distribution terminal first will send packs in Data packet, wherein also comprises destination address, MAC Address, byte-sized and has or not the important information such as segmentation. First described Packet Generation is extremely joined to the openflow switch place that distribution terminal equipment box is connected with intelligence, the stream table of described switch and self maintained compares, and the stream table that can mate if find that there is forwards according to stream table. If there is no the stream table of coupling in described openflow switch, send Packet_in message to the sub-controller of its connection, reported data bag is detained situation and this data pack buffer is got off. Wherein Fig. 5 is the message interaction process figure of destination node within the scope of described sub-controller management and control.
Described sub-controller receives after Packet_in message, first checks in the cellular logic topological diagram of self maintained whether comprise the destination node in Data packet. If destination node is in the scope of described sub-controller management and control, perform step described in S405 sub-controller according to the cellular logic topological diagram of self maintained, and calculate optimum communication path in conjunction with corresponding routing algorithm, then the routing configuration information calculating is packaged in Packet_out message and is issued in relevant openflow switch. Each corresponding openflow switch completes road construction according to the information updating in message self stream table after receiving Packet_out message, the message of delay is sent to destination by this path, and retain within a certain period of time this stream table, when again by identical service request, can complete fast the forwarding of message. Described sub-controller is sending after Packet_out message downwards, can upgrade at once the cellular logic topological diagram of self maintained, simultaneously also can superior master controller send Update message and upgrade higher level's cellular logic topological diagram, more new information upwards transmits successively, finally forms visual topological diagram by Integrated Network Management System and reports to webmaster personnel. Wherein Fig. 6 is the message interaction process figure of destination node within the scope of described sub-controller management and control.
If the destination node of communicating by letter in said process is not in the scope of described sub-controller management and control, the master controller that sub-controller continues to connect to it sends Packet_in message, described master controller will be found the information of this destination node in the larger scope of the ratio sub-controller of its management and control, if find, destination node is within the scope of the management and control of described master controller, perform step S409, after meter place routing iinformation, Packet_out message has been issued to road construction successively.
If described destination node is not also among described master controller management and control scope, master controller can send Packet_in message to master controller, in network-wide basis, found again this destination node by master controller, if find this node to calculate route by master controller, and routing iinformation is packaged into and in Packet_out message, has once issued road construction. If this node does not report Integrated Network Management System to report an error in network, wait for that webmaster personnel process.
Message interaction process figure while carrying out remote control when the corresponding information of Integrated Network Management System active inquiry Intelligent power distribution terminal and to " three is distant " equipment as shown in Figure 7, Figure 8. In the time that Integrated Network Management System is wanted some information of the corresponding Intelligent power distribution terminal of active inquiry or state, the content that can will inquire about is encapsulated in Read_State message, this message has controllers at different levels to be issued to successively corresponding openflow switch, is finally sent to corresponding Intelligent power distribution terminal by described switch. Each controller of while and openflow switch are responded successively Read_State_Resp message information and are represented information to be issued, and are finally back to Integrated Network Management System in the Data information of successively described Intelligent power distribution terminal being beamed back.
In the time that Integrated Network Management System relatively a certain " three is distant " equipment carries out remote control or remote regulating, first by Integrated Network Management System, controller information is encapsulated in Control_TU message, and be issued to successively corresponding Intelligent power distribution terminal, after described Intelligent power distribution terminal completes adjustment, can send the message information of Control_TU_done, and report successively expression to complete corresponding adjustment this information.
Described protocol converter, comprises input interface module, input communication module, Embedded Minimum System, output communication module, output interface module; Input interface module comprises that CAN, RS232, RS485, USB are master/slave, physical connector and the transceiver of Ethernet, IIC, SPI, Bluetooth, WLAN interface; Output interface module is physical connector and the transceiver of openflow agreement; The data that data transmitting equipment sends by input interface module in input communication module, input communication module is honored as a queen and is sent to Embedded Minimum System data transmitting equipment communication setting, data solution, Embedded Minimum System completes the conversion of protocol format, to changing after rear data encapsulation, by output interface module, the openflow protocol data of conversion is sent to data receiver by output communication module.
Described input interface module is data transmission channel; Request/response, the data deblocking of input communication module to data transmitting equipment communication initialization, state-detection, protocol data, obtains the output data of data transmitting equipment and sends.
The data encapsulation that described output communication module is finished changing Embedded Minimum System transfer becomes the packet of openflow form, to data receiver communication initialization, state-detection, protocol data request/response; Output interface module is data transmission channel.
Described Embedded Minimum System comprises main control chip unit, PMU, program storage block, data memory module, JTAG debugging module, completes protocol conversion with the Embedded Minimum System of embedded OS.
Described embedded OS comprises data transmitting equipment configuration module, data receiver configuration module, Semantic mapping configuration module and protocol conversion module, multiple configuration files of the dynamic generated data transmitting apparatus of data transmitting equipment configuration module agreement; Multiple configuration files of the dynamic generated data receiving equipment of data receiver configuration module agreement; The configuration file of the mapping relations between semanteme and the semanteme of data receiver agreement of the dynamic generated data transmitting apparatus of Semantic mapping configuration module agreement; Protocol conversion module completes the conversion of agreement.
Hardware interface messaging parameter, input message building form and the input protocol format of described data transmitting equipment configuration module to data transmitting equipment carries out instantiation, generates input communication configuration file, input protocol semantics description document and input agreement syntactic description file.
Hardware interface messaging parameter, output information building form and the output protocol form of described data receiver configuration module to data receiver carries out instantiation, generates output communication configuration file, output protocol semantic description file and output protocol syntactic description file.
Mapping relations between semanteme and the semanteme of data receiver agreement of described Semantic mapping configuration module to data transmitting equipment agreement are carried out instantiation, generative semantics mapping description document.
Described protocol conversion module completes the conversion of agreement, comprise protocol semantics conversion and syntax conversion, input, output protocol syntactic description file and Semantic mapping description document are through Code Generator, compilation tool processing, generate input syntax analyzing sub-module, semantic conversion submodule and the output syntactic constructs submodule of protocol conversion module, input, output protocol semantic description file are as the configuration file of semantic conversion submodule, for semantic conversion submodule.
Described Intelligent power distribution terminal is unified the protocol converter of management and control between Intelligent power distribution terminal and its upper management equipment, is openflow agreement by all kinds of other communication Protocol Conversion.
As shown in the figure, a kind of Intelligent power distribution terminal is unified the protocol converter hardware configuration schematic diagram of management and control as shown in Figure 9, comprises successively input interface module 1, input communication module 2, Embedded Minimum System 3, output communication module 4, output interface module 5; Embedded Minimum System 3 comprises main control chip unit 6, PMU 7, program storage block 8, data memory module 9, JTAG debugging module 10.
The AT91SAM9263 that this hardware platform is chosen the ARM9 series of Atmel company is main control chip, and this chip dominant frequency is 220MHz, has MMU function, supports the loading of operating system; Program storage block has been equipped with the Dataflash of the NandFlash of 256M of the K9F2G08U0B of 1 Samsung and the 4M of the AT45DB321D of 1 Atmel, needs depositing of the user data preserved etc. as the good user program of system start-up code, operating system nucleus mirror image, root file system, debugging or other after system power failure; Data memory module has been equipped with 2 MT48LC128M4A2P, and total size is the SDRAM of 512M size, as depositing of system runtime data; Input, output interface module comprise physical connector and the transceiver of the interfaces such as CAN, RS232, RS485, USB are master/slave, Ethernet, IIC, SPI, Bluetooth, WLAN. Embedded OS has been chosen Linux3.0 kernel, through transplanting and reducing, as converter control software running platform.
Intelligent power distribution terminal is unified the protocol converter of management and control to a process chart for equipment message as shown in figure 10, makes a concrete analysis of its embodiment below.
Input interface module, output interface module have comprised that CAN, RS232, RS485, USB are master/slave, physical connector, the transceiver of Ethernet, IIC, SPI, the interface such as Bluetooth, WLAN, such as DM9161 ethernet transceiver, ADM3202 serial ports transceiver and DB9, RJ45 AN connector etc., realize between this many Universal joints communication protocols converter and data transmitting equipment and data receiver and carry out physical connection by AN connector, the passage of transfer of data is provided.
The corresponding controller that input communication module, output communication module have comprised input, output interface and corresponding device driver, the output communication configuration file that the input communication configuration file that reading out data transmitting apparatus configuration module generates respectively and data receiver configuration module generate, obtaining communication parameter, realizes communication initialization, the state-detection of input communication module, output communication module, the device driver functionality such as request/response, data deblocking of protocol data.
Converter control software comprises data transmitting equipment configuration module, data receiver configuration module, Semantic mapping configuration module and protocol conversion module. Data transmitting equipment configuration module is mainly realized multiple configuration files of dynamic generated data transmitting apparatus agreement; Data receiver configuration module is mainly realized multiple configuration files of dynamic generated data receiving equipment agreement; Semantic mapping configuration module is realized the configuration file of the mapping relations between the semanteme of dynamic generated data transmitting apparatus agreement and the semanteme of data receiver agreement; Protocol conversion module mainly completes the conversion of agreement.
The software flow pattern of the protocol converter that Intelligent power distribution terminal is unified management and control as shown in figure 11 to equipment configuration, implementation is specific as follows.
Data transmitting equipment configuration module in conversion and control software, the method for employing Web interface configurations, obtains input communication configuration file, input agreement syntactic description file, these 3 configuration files of input protocol semantics description document. Concrete implementation step is as follows: the parameter configuration interface of the corresponding hardware interface of (1) construction data transmitting apparatus, the messaging parameter instantiations such as for example baud rate to serial ports, start bit, position of rest, even-odd check obtain input communication configuration file, for input communication module; (2) the abstract parameter configuration interface of the agreement syntax format of construction data transmitting apparatus, for example, comprised active or passive send mode, the data that needs send, address of transmission etc. and can obtain input agreement syntactic description file; (3) construct the parameter configuration interface of protocol semantics and the sequential of data transmitting equipment, for example, comprise title, the type of data in agreement, length, repeatable, the attributes such as position, by by parameter attribute instantiation on interface, obtain input protocol semantics description document.
Identical with the implementing method of data transmitting equipment configuration module in above-mentioned conversion and control software, data receiver configuration module in converter control software also adopts the method for Web interface configurations, obtains output communication configuration file, output protocol syntactic description file, these 3 configuration files of output protocol semantic description file.
Semantic mapping configuration module in converter control software, adopts matched interface of Web interface, and the mapping relations that are used between matched data transmitting apparatus protocol semantics and the semanteme of data receiver agreement, obtain Semantic mapping description document.
Protocol conversion module in above-mentioned conversion and control software is made up of 3 submodules, is respectively input syntax analyzing sub-module, semantic conversion submodule, output syntactic constructs submodule. Concrete implementing method is as follows: (1) input syntax analyzing sub-module: the input agreement syntactic description file obtaining in above-mentioned data transmitting equipment configuration module, need to meet the desired syntax rule of Code Generator. Adopt ANTLR(compiler maker of increasing income) be Code Generator, use this instrument to compile input agreement syntactic description file, thereby obtain input syntax analyzing sub-module; (2) semantic conversion submodule: adopt above-mentioned Code Generator, Semantic mapping description document is compiled, generative semantics conversion submodule, input, output protocol semantic description file are as the configuration file of semantic conversion submodule, for semantic conversion submodule; (3) output syntactic constructs submodule: the output protocol syntactic description file obtaining in above-mentioned data transmitting equipment configuration module, also meet certain syntax rule, be equivalent to a grammar templates, adopt String mould plate technique, output protocol syntactic description file restructure is become to output syntactic constructs submodule.
Completed after configuration in early stage, the protocol converter that the Intelligent power distribution terminal the present invention relates to is unified management and control can be linked between data transmitting equipment and data receiver. In the time of operation, the transmission data of data transmitting equipment are input in the input syntax analyzing sub-module of common communication protocol converter, complete the syntax parsing to input data, semantic conversion submodule has been realized mapping and the conversion of protocol semantics, transformation result, again by the structure of output syntactic constructs submodule, is configured to meet the data structure of data receiver agreement. To sum up, the unmatched problem of communication protocol when the present invention has well completed power distribution network Intelligent power distribution terminal and unifies management and control, thus be the unified management and control that openflow agreement realizes power distribution network by each communication Protocol Conversion.
Be understandable that, above about specific descriptions of the present invention, only for being described, the present invention is not limited to the described technical scheme of the embodiment of the present invention, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as meet, all within protection scope of the present invention.
Claims (10)
1. the power distribution network dispatching patcher based on software defined network, comprise management SDN controller zones of different, different brackets, openflow switch, Intelligent power distribution terminal and Integrated Network Management System, is characterized in that described each SDN controller need to be divided into sub-controller, master controller and master controller according to power distribution network topological structure; Wherein said sub-controller is safeguarded the cellular logic topological diagram of one's respective area, and described master controller is safeguarded the cellular logic topological diagram in adjacent several regions, and described master controller is safeguarded the logical topology figure of whole network; And on master control, move Integrated Network Management System, to whole network unified management and control.
2. the power distribution network dispatching patcher based on software defined network according to claim 1, is characterized in that described each quasi-controller is all positioned at different substations and is connected with openflow switch or the controller of management and control separately by wired or wireless mode.
3. the power distribution network dispatching patcher based on software defined network according to claim 2, is characterized in that described openflow switch is connected with Intelligent power distribution terminal or the sub-controller of management and control separately by wired or wireless mode.
4. the power distribution network dispatching patcher based on software defined network according to claim 3, is characterized in that described Intelligent power distribution terminal is for having station institute terminal (DTU), line feed terminals (FTU), the distribution transformer terminals (TTU) of openflow interface or Additional Agreement converter.
5. the power distribution network dispatching patcher based on software defined network according to claim 4, it is characterized in that described protocol converter is openflow agreement by Distribution Network Communication protocol conversion, and be connected on outward on the intelligent terminal that does not configure openflow agreement by wired mode, make intelligent terminal and openflow switch communication.
6. the power distribution network dispatching method based on software defined network, it is characterized in that comprising: in the time having power distribution network to break down or other change, described Intelligent power distribution terminal sends signal, whether the openflow switch inspection being connected with described Intelligent power distribution terminal has the stream table of coupling, carry out according to stream table if having, report successively its controller connecting if do not have, then after calculating and analyze by described controller, send corresponding control instruction and control described intelligent terminal and move accordingly.
7. the power distribution network dispatching method based on software defined network according to claim 6, is characterized in that, in the time having new equipment to add or leave system, comprising the following steps:
Step S201: the intelligent power distribution equipment of new access sends to the openflow switch of its connection the HELLO message that comprises self information;
Step S202: the sub-controller that described Openflow switch connects to it sends a certain port of Port_status message notifying sub-controller new equipment access, has comprised the relevant information of described equipment in message;
Step S203: described sub-controller adds this node the one's respective area network abstract topological graph of self maintained, and the described equipment newly adding is carried out to relevant configuration, the simultaneously network topological information of a superior renewal of the equipment one's respective area of controllers at different levels;
Step S204: described Openflow switch sends HELLO_Resp message to described new equipment, has wherein comprised the order and the corresponding configuration information that allow access;
Step S205: described new equipment just can send corresponding data information to described openflow switch after having configured by received configuration information.
8. the power distribution network dispatching method based on software defined network according to claim 7, is characterized in that, in the time that the message that described Intelligent power distribution terminal sends does not mate stream table in connected openflow switch, adopting steps of processing:
Step S403: the sub-controller that described openflow switch connects to it sends Packet_in message;
Step S404: described sub-controller checks the abstract network topological diagram of self maintained, whether destination node is in one's respective area.
9. the power distribution network dispatching method based on software defined network according to claim 8, is characterized in that when in the network topology that the destination node that described Intelligent power distribution terminal will be communicated by letter is managed at its connexon controller, adopting steps of processing:
Step S405: the abstract network topology figure safeguarding according to described sub-controller calculates optimal path, and link establishment Information encapsulation is sent in Packet_out message to described openflow switch, and superior controller transmission update information is upgraded network topology structure;
Step S406: described openflow switch is shown according to described Packet_out message amendment self stream, and described infomational message is sent at designated port;
Step S407: described openflow switch retains this forwarding flow table within a certain period of time directly forwards according to this stream table in the time that have identical destination node message next time again.
10. the power distribution network dispatching method based on software defined network according to claim 9, is characterized in that when in the network topology that the destination node that described Intelligent power distribution terminal will be communicated by letter is not managed at its connexon controller, adopting steps of processing:
Step S408: the master controller that described sub-controller connects to it sends Packet_in message;
Step S409: described master controller calculates optimal path according to the abstract network topological diagram of self maintained, and link establishment Information encapsulation is sent in Packet_out message to described sub-controller, and superior controller transmission update information is upgraded network topology structure;
Step S410: described Packet_out message is issued to described openflow switch by described sub-controller;
Step S411: described openflow switch is shown according to described Packet_out message amendment self stream, and described infomational message is sent at designated port;
Step S412: described openflow switch retains this forwarding flow table within a certain period of time directly forwards according to this stream table in the time that have identical destination node message next time again.
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