CN103259703A - Real-time bus across safety zone communication method suitable for power industries - Google Patents
Real-time bus across safety zone communication method suitable for power industries Download PDFInfo
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Abstract
The invention discloses a real-time bus across safety zone communication method suitable for power industries, and belongs to the technical field of informatization and automation of electric power systems. According to the real-time bus across safety zone communication method, across safety zone information exchange is accomplished through transit servers and internal nodes. Two transit servers are configured in one safety zone, and the transit servers are used for transmitting and receiving cross-zone messages and transferring the messages to a designated work catalogue, so that the internal nodes can use the messages. The transit servers are arranged at the positions related to an isolating device, the internal nodes in the same safety zone establish a network connection through a switch or a router, and the internal nodes are mainly used for transmitting messages and receiving messages at last. According to the real-time bus across safety zone communication method, data are transmitted through the network isolation device unidirectionally (in the forward direction and in the reverse direction) on the premise that the existing safety zone framework arrangement is guaranteed to be unchanged, and thus safe and stable data communication among different safety zones is achieved finally.
Description
Technical field
The invention belongs to electric power information and technical field of automation, particularly relate to a kind of real-time bus cross-safety zone method for communicating.
Background technology
As everyone knows, real-time bus can implementation process between the high-speed data communication of (between the computer or the process of computer-internal), have functions such as the registration of process/node/cancel, message transmission, message sink, subscription, issue.These functions offer types of applications with the form of interface function, satisfy the demand that information between the types of applications is carried out real-time, interactive.In addition, bus is supported in the same scene, between a plurality of places of safety or carries out one-to-many, man-to-man information exchange between a plurality of scene, on the basis of satisfying the power system security requirement, create laterally and get through (being between a plurality of places of safety), vertical actual motion environment that connects (being between a plurality of scheduling scene).
The data type that the bus support is transmitted can be all kinds of real time datas and events such as telemetry, switch changed position, trouble signal, control command.Bus belongs to the service routine of communication layers, application can arrange bus according to actual conditions and be the quality of its service, service quality comprises non-persistentization and persistence service, and in addition, bus can operate on 32/64 the main flow windows/linux operating system platform with security and stability.
Mutual fast and efficiently for satisfying real time information, the communication mode of real-time bus is asynchronous unblock formula, and application program is by calling the transmission message in the real time bus interface storehouse and receiving the transmission that message interface is realized message message.Transmission interface is responsible for message is put transmission buffering area to this locality, and the propelling movement process on backstage sends the message of buffering area.And the backstage receiving thread of receiving terminal is responsible for receiving message to local reception buffering area from network, and receiving interface obtains message from this buffering area.When communicating between a plurality of scenes or a plurality of place of safety, a message transfer program can be moved in each scene or place of safety, to realize spreading out of and inserting of message.The function that present bus has is as follows:
Support node is to the message transmissions of node mode;
Support node is to the message transmissions of passage (being that node arrives a plurality of nodes);
Support the quality of service transport of different brackets;
Support the transmission with message in on-the-spot;
Support the transmission of message between many scenes, comprise that point-to-point and point are to multiple spot;
Support the transmission of message between many places of safety, comprise that point-to-point and point are to multiple spot;
Have perfect bus management function, comprise the management of checking of nodal information, progress information, cache information and channel information etc.;
Has perfect application program second development interface storehouse.
Along with improving constantly of the power industry level of IT application, for guaranteeing electric power core information system safety, electric power system begins to adopt security protection mechanism, in China's electric power system, service area based on computer and network technologies can be divided into real time control area (being place of safety I) and non-control production area (being place of safety II) again, and management information is divided into production management district (being place of safety III) and management information area (being place of safety IV).Wherein between I district and the II district, all use fire compartment wall to realize logic isolation between III district and the IV district, use network isolating device to realize physical isolation between I/II district and the III district, the I/II district uses the forward network safety isolator to isolate to the communication in III district, and the forward spacer assembly only allows the data in I/II district are passed to the III district.The III district uses reverse network safety isolator to isolate to the communication in I/II district, and the reverse isolation device allows the data in III district are passed to the I/II district.For the support of transmission means, it is different that forward spacer assembly and reverse isolation device also have, and the forward spacer assembly is supported TCP/UDP individual event message transmissions, and formatted texts such as the E language transmission of a reverse isolation device tenaculum signature.The division of place of safety makes therefore how the user is shielded the place of safety by directly transregional carrying out of the respectively data communication between the district, data necessary is carried out the transregional realization of sharing real-time bus just seem extremely important.
Spacer assembly for fear of security interval exerts an influence to the bus communication function, need to realize a kind of real-time bus cross-safety zone method for communicating, its main purpose is will accomplish on the basis of satisfying the power system security requirement, creates laterally the actual motion environment of getting through (being cross-safety zone communication).The present invention develops realization just in order to realize the cross-safety zone communication function of real-time bus in electric power scheduling automatization system.
Summary of the invention
For solve the node that is positioned at different safety zones in the prior art under the power industry environment by real-time bus carry out information interaction problem, the present invention proposes a kind of real-time bus cross-safety zone communication means that is applicable to power industry.This method can guarantee that existing place of safety framework arranges under the constant prerequisite, finishes data and passes through unidirectional (comprising forward and reverse) network isolating device, finally realizes safety between the different places of safety, stable data communication.
Specifically, the present invention takes following technical scheme to realize, comprises the following steps:
1) the reverse transfer server of production control district forward transfer server and production control district is set in the production control district of electric power system, the reverse transfer server of production management district forward transfer server and production management district is set in the production management district of electric power system, wherein:
Production control district forward transfer server be used for to receive the broadcast of production control district internal node, in this node of production control district internal node broadcasting message, receive production control district internal node and need be transmitted to the message message in production management district and this message message is sent to production management district forward transfer server through the forward spacer assembly;
The reverse transfer server in production control district be used for to receive the broadcast of production control district internal node, in this node of production control district internal node broadcasting message, receive the text message that transmitted by the reverse transfer server in production management district and text message conversion returned initial message message format, sent message message to production control district internal node according to destination address;
Production management district forward transfer server be used for to receive the broadcast of production management district internal node, in this node of production management district internal node broadcasting message, receive the message message that transmitted by production control district forward transfer server, send message message to production management district internal node according to destination address;
The reverse transfer server in production management district be used for to receive the broadcast of production management district internal node, in this node of production management district internal node broadcasting message, receive production management district internal node and need be transmitted to the message message in production control district and behind the text message of the textual form that this message message format is turned to the support of reverse isolation device, text message be sent to the reverse transfer server in production control district through the reverse isolation device;
2) when needs send message message by the production control district to the production management district, production control district forward transfer server receives the message message that need be transmitted to the production management district and this message message is sent to production management district forward transfer server through the forward spacer assembly from production control district internal node earlier, and production management district forward transfer server sends message message to production management district internal node according to destination address after receiving the message message that is transmitted by production control district transfer server;
3) When required by the manufacturer to the production control zone management area to send packets message, Production Management District reverse transfer server to start production within the management area need to be forwarded to the production node receives a packet control area message and the message in the message reverse isolation unit supports formatted text in the form of text messages after the text message is sent to the device via reverse isolation reverse transit server production control area, production control zone reverse transit server receives from the production management district reverse transit server text message came after the text message is converted back to the original message format and in accordance with the packet destination address messages to send packets to the production control area internal nodes.
Beneficial effect of the present invention is as follows: the present invention has realized the cross-safety zone communication of real-time bus, solved under the power system security partitioned environment, data communication problem between the internal node of different safety zones, adopted the power industry real-time bus of " cross-safety zone communication " function can greatly improve the bus versatility, on the basis of satisfying the power system security requirement, create laterally the actual motion environment of getting through (being to communicate by letter between a plurality of places of safety), promote its using value greatly, make real-time bus can satisfy more complicated data communication needs.
Description of drawings
Accompanying drawing 1 is the place of safety I field conduct figure that communicates by letter with place of safety III.
Accompanying drawing 2 is place of safety I and place of safety III communication plan schematic diagram.
Accompanying drawing 3 is that place of safety I is to place of safety III message transmissions flow chart.
Accompanying drawing 4 is place of safety III and place of safety I message transmissions flow chart.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention.
The functional specification of electric power scheduling automatization system is followed in technical scheme strictness of the present invention, has designed a kind of for real-time bus cross-safety zone method for communicating.Technical scheme of the present invention is primarily aimed at and has communicating by letter of physical isolation apparatus between I/II district and the III district.
Only allowing the characteristic of data unidirectional delivery based on spacer assembly, is the message transmissions that realizes the real-time bus cross-safety zone, needs to increase the message retransmission process of place of safety, is deployed on the server that links with network isolating device in each place of safety.The server that hereinafter will be deployed with cross-safety zone message retransmission process is referred to as transfer server, and the transfer server that links with the forward spacer assembly is called the forward transfer server, and the transfer server that links with the reverse isolation device is called reverse transfer server.Here be example (principle is identical with it for the message transmissions scheme between place of safety II and the place of safety III) with place of safety I with message transmissions scheme between the III of place of safety only, place of safety I exists the forward spacer assembly between the III of place of safety, place of safety III exists the reverse isolation device between the I of place of safety, and real-time bus had not only needed the internal node message message in the safe I district to be sent to the internal node in the safe III district but also needed the internal node message message in the safe III district to be sent to internal node among the I of place of safety.
Main technical schemes comprises four parts: 1. the forward transfer server function scheme of place of safety I; 2. the forward transfer server function scheme of place of safety III; 3. the reverse transfer server function scheme of place of safety III; 4. the reverse transfer server function scheme of place of safety I.Specific as follows:
The function scheme that place of safety I forward transfer server should have is as follows:
(1) broadcast of reception internal node comprises heartbeat message (keeping active), adds path message and leave path message etc., to safeguard own on-the-spot interior node, progress information;
(2) this nodal information of broadcasting in internal node, special sign transit node information is to allow other nodes know existing of transfer server;
(3) receiving internal node need be transmitted to the message message of place of safety III (this message message may be certain node that sends to place of safety III, the transmission source determines whether that according to the parameter in the transmission interface and logic needs send to transfer server), be placed in the shared drive (being made as SHM1);
(4) send the message message that need send to place of safety III, this message is taken from the shared drive SHM1 that mentions in (3).
The function scheme that place of safety III forward transfer server should have is as follows:
(1) broadcast of reception internal node comprises heartbeat message (keeping active), adds path message and leave path message etc., to safeguard own on-the-spot interior node, progress information;
(2) this nodal information of broadcasting in internal node, special sign transit node information is to allow other nodes know existing of transfer server;
(3) receive the message message that sends over from place of safety I forward transfer server, be placed in the shared drive (being made as SHM2), (4) of the function scheme that should have with place of safety I forward transfer server is corresponding;
(4) the message message that receives is sent to inner node according to destination node, message is taken from the shared drive SHM2 that mentions in (3).
The function scheme that III reverse transfer server in place of safety should have is as follows:
(1) broadcast of reception internal node comprises heartbeat message (keeping active), adds path message and leave path message etc., to safeguard own on-the-spot interior node, progress information;
(2) this nodal information of broadcasting in internal node, special sign transit node information is to allow other nodes know existing of transfer server;
(3) receiving internal node need be transmitted to the message message of place of safety I (this message message may be certain node that sends to place of safety I, the transmission source determines whether that according to the parameter in the transmission interface and logic needs send to transfer server), be the formatted text form with the message message conversion, and be placed on the assigned catalogue place that the reverse isolation device provides;
(4) send the message message need send to place of safety I, this message is taken from the assigned catalogue that the reverse isolation device mentioned in (3) provides.
The function scheme that I reverse transfer server in place of safety should have is as follows:
(1) broadcast of reception internal node comprises heartbeat message (keeping active), adds path message and leave path message etc., to safeguard own on-the-spot interior node, progress information;
(2) this nodal information of broadcasting in internal node, special sign transit node information is to allow other nodes know existing of transfer server;
(3) receive the formatted text message that sends over from reverse place of safety III, formatted text is changed back former message format and be placed in the shared drive (being made as SHM3);
(4) the message message that receives is sent to inner node according to destination node, message is taken from the shared drive SHM3 that mentions in (3).
Main feature of the present invention is as follows:
(a) be applicable to the real-time bus cross-safety zone communication of power industry.
(b) there is the unilateral network spacer assembly between the different safety zones.
(c) under the prerequisite that guarantees the system safety demand, finish data and pass through unidirectional (comprising forward and reverse) network isolating device, realize safety between the different places of safety, stable data communication.
(d) finish cross-safety zone information exchange work jointly by transfer server and internal node, wherein, transfer server has two in same safety zone, is responsible for sending and receiving transregional message respectively, and with message transmissions under the working directory of appointment, use for internal node.Transfer server is deployed in the position that links with spacer assembly; Internal node can be disposed many at the same area, it can be that server also can be common computer, all internal nodes in the same safety zone are set up network connection by switch or router, and internal node mainly is responsible for initiating message transmissions and finally accepting message.
(e) call real-time bus to the support of file sending/receiving application interface, management of process and message transmissions.
When using the cross-safety zone communication means of the present invention's proposition, need the scheduling real-time bus to the support of file sending/receiving application interface, management of process and message transmissions, information such as the safe realm name that bus provides according to heading, node name are sent to the targeted security district with message, realize the unidirectional message transmissions between the place of safety.
Be example with communicating by letter between the place of safety I shown in the accompanying drawing 1 and the place of safety III.Install N1, N2 in the accompanying drawing 1, N3, N4 are the internal nodes of place of safety I, they can be that server also can be common computer; Device Z1, Z2 are respectively the forward transfer server of place of safety 1, reverse transfer server, and wherein Z1 is responsible for the forwarding of cross-safety zone message, and Z2 is responsible for the cross-safety zone message and receives; Device N5, N6, N7, N8 are the internal nodes of place of safety I; Device Z3, Z4 are respectively the forward transfer server of place of safety III, reverse transfer server, and wherein Z3 is responsible for the reception of cross-safety zone message, and Z4 is responsible for the cross-safety zone message and transmits; Device G1, G2 are respectively forward, the reverse isolation devices that is deployed between place of safety I and the place of safety III; Device J1, J2 are respectively the switches in place of safety I, the place of safety III, and switch connects to form local area network (LAN) with each node in the place of safety (comprising internal node and transfer server).Concrete IP address and network information example are as follows:
Z1 – – IP address: 192.168.11.15, gateway address: 192.168.11.1.
Z2 – – IP address: 192.168.11.16, gateway address: 192.168.11.1.
N1 – – IP address: 192.168.11.17, gateway address: 192.168.11.1.
N2 – – I-P address: 192.168.11.18, gateway address: 192.168.11.1.
N3 – – IP address: 192.168.11.19, gateway address: 192.168.11.1.
N4 – – IP address: 192.168.11.20, gateway address: 192.168.11.1.
J1 – – place of safety I switch.
The unidirectional spacer assembly of G1 – –, the forward type, detailed configuration vide infra.
The unidirectional spacer assembly of G2 – –, reversal, detailed configuration vide infra.
Z3 – – IP address: 192.100.11.30, gateway address: 192.100.11.1.
Z4 – – IP address: 192.100.11.31, gateway address: 192.100.11.1.
N5 – – IP address: 192.100.11.32, gateway address: 192.100.11.1.
N6 – – IP address: 192.100.11.33, gateway address: 192.100.11.1.
N7 – – IP address: 192.100.11.34, gateway address: 192.100.11.1.
N8 – – IP address: 192.100.11.35, gateway address: 192.100.11.1.
J2 – – place of safety III switch.
Accompanying drawing 2 has provided the signal of this communication plan.Internal node N2 with place of safety I among the figure gives an example to the internal node N3 transmission message of place of safety I to the internal node N7 transmission message of place of safety III, the internal node N8 of place of safety III, dots the transmission path of message.Implementation step is as follows:
Step 1: the forward transfer server Z1 deploy transfer service routine in the I of place of safety.This program mainly is responsible for receiving the broadcast of internal node, this node of broadcasting message, reception internal node need be transmitted to the message message of place of safety III and send message message to place of safety III in internal node.
Step 2: the reverse transfer server Z2 deploy transfer service routine in the I of place of safety.The text message that this program mainly is responsible for receiving the broadcast of internal node, this node of broadcasting message, reception are transmitted by place of safety III in internal node, text message is changed back initial message format and message transmission in shared drive, and send message to internal node according to destination address.
Step 3: the forward transfer server Z3 deploy transfer service routine in the III of place of safety.The message message that this program mainly is responsible for receiving the broadcast of internal node, this node of broadcasting message, reception are transmitted by Z1 transfer service in internal node, and with file transfer in shared drive, and send message message to internal node according to destination address.
Step 4: the reverse transfer server Z4 deploy transfer service routine in the III of place of safety.This program mainly be responsible for to receive the broadcast of internal node, in internal node this node of broadcasting message, receive message message that internal node need be transmitted to place of safety I, the message message format turned to the textual form of reverse isolation device support and text message to be sent is put into reverse isolation device designated directory place.
Wherein, the configuring condition of unidirectional spacer assembly G1 (forward isolation gap) sees the following form:
The configuring condition of unidirectional spacer assembly G2 (reverse isolation gateway) sees the following form:
Place of safety I sees accompanying drawing 3 and accompanying drawing 4 to message transmissions flow process (forward transmission), the place of safety III of place of safety III for details to the message transmissions flow process (reverse transfer) of place of safety I.
Though the present invention is with preferred embodiment openly as above, embodiment be not limit of the present invention.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to the present invention's protection range equally.Therefore protection scope of the present invention should be standard with the application's the content that claim was defined.
Claims (1)
1. be applicable to the real-time bus cross-safety zone communication means of power industry, it is characterized in that, comprise the following steps:
1) the reverse transfer server of production control district forward transfer server and production control district is set in the production control district of electric power system, the reverse transfer server of production management district forward transfer server and production management district is set in the production management district of electric power system, wherein:
Production control district forward transfer server be used for to receive the broadcast of production control district internal node, in this node of production control district internal node broadcasting message, receive production control district internal node and need be transmitted to the message message in production management district and this message message is sent to production management district forward transfer server through the forward spacer assembly;
The reverse transfer server in production control district be used for to receive the broadcast of production control district internal node, in this node of production control district internal node broadcasting message, receive the text message that transmitted by the reverse transfer server in production management district and text message conversion returned initial message message format, sent message message to production control district internal node according to destination address;
Production management district forward transfer server be used for to receive the broadcast of production management district internal node, in this node of production management district internal node broadcasting message, receive the message message that transmitted by production control district forward transfer server, send message message to production management district internal node according to destination address;
The reverse transfer server in production management district be used for to receive the broadcast of production management district internal node, in this node of production management district internal node broadcasting message, receive production management district internal node and need be transmitted to the message message in production control district and behind the text message of the textual form that this message message format is turned to the support of reverse isolation device, text message be sent to the reverse transfer server in production control district through the reverse isolation device;
2) when needs send message message by the production control district to the production management district, production control district forward transfer server receives the message message that need be transmitted to the production management district and this message message is sent to production management district forward transfer server through the forward spacer assembly from production control district internal node earlier, and production management district forward transfer server sends message message to production management district internal node according to destination address after receiving the message message that is transmitted by production control district transfer server;
3) When required by the manufacturer to the production control zone management area to send packets message, Production Management District reverse transfer server to start production within the management area need to be forwarded to the production node receives a packet control area message and the message in the message reverse isolation unit supports formatted text in the form of text messages after the text message is sent to the device via reverse isolation reverse transit server production control area, production control zone reverse transit server receives from the production management district reverse transit server text message came after the text message is converted back to the original message format and in accordance with the packet destination address messages to send packets to the production control area internal nodes.
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