CN104468515A - Intelligent substation communication method and system based on information center network - Google Patents
Intelligent substation communication method and system based on information center network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses an intelligent substation communication method and system based on an information center network. The method includes the steps that firstly, a client side A sends a data access message to an uplink router A, a message header comprises a data access request and a unique route distinguisher, and the unique route distinguisher is the information name comprising authorization attributes; secondly, the uplink router A forwards the data access message to a transformer substation data source end, the data source end returns a result message to a router in a transformer substation data transmission network, and a message header of the result message includes the responsive data access request, result data and the unique route distinguisher, wherein the result data and the unique route distinguisher are provided for the client side A; thirdly, the authorization attributes of the unique route distinguisher are detected, if the authorization attributes are authorization or delegation authorization, the router has the cache function, and the router is then used for storing the result data and forwards the result data to the client side A. According to the intelligent substation communication method and system based on the information center network, redundant data can be reduced, and the network resource utilization rate and the power data transmission efficiency are improved.
Description
Technical field
The present invention relates to a kind of intelligent transformer substation communication method based on information centre's network and system, belong to intelligent substation network communication field.
Background technology
The construction of intelligent grid comprise the sending out of electric power system, defeated, become, join, with and scheduling six links, each link all can produce mass data.Power communication and transmission network cover every field, present ubiquitous interconnected development trend, the application such as ubiquitous data network carrying production management, weather information, office information system and scientific research.Along with technology of Internet of things and cloud computing technology are in the extensive use of power industry, future electrical energy data network by plant stand at different levels for covering, control centre, power supply unit, electricity business hall, fill electrical changing station, electric intelligent community etc.
In transformer substation system, for meeting demands such as equipment condition monitoring, fault detection and location, harmonic detecting and power quality controllings, transformer station install a large amount of of a great variety, standard differs, poor compatibility and maintenance upgrade a series of equipment costly.These equipment have the advantages that real time data amount is little, requirement of real-time is not high, dependence magnanimity historical information, analytical calculation amount are huge.Along with the formation gradually carrying forward vigorously the large data environment with electric power of intelligent substation, the data exponentially level surge of Intelligent Substation System at different levels, needs to carry out unified monitoring, analysis and failure diagnosis process to the data of transformer station PB level.The data dissemination techniques gathered all is positioned at application layer, and there is mass of redundancy data transmission, network resource utilization is not high.And, existing intelligent transformer substation information communication construction is based on the architecture of conventional TCP/IP, certain defect is all there is in flexibility, fault-tolerance, high efficiency etc., competitive relation between network internal agreement makes IP layer seriously hinder the lifting of network performance, hinders the development of the new opplication such as electrical network mobile access point, distributed information processing and Streaming Media.
Summary of the invention
The object of the invention is to, a kind of intelligent transformer substation communication method based on information centre's network and system are provided, can redundant data be reduced, improve network resource utilization and electric power data efficiency of transmission.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
Based on an intelligent transformer substation communication method for information centre's network, comprise the following steps:
S1, customer end A upstream router-A sends data access message, and the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute;
S2, upstream router A forwarding data access message is to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher;
S3, detects the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A;
S4, the access message of customer end B upstream result data described in router B forwarding step S3;
S5, detect the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then detect other routers on forward-path according to distance and whether store described result data, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to step S6;
S6, detects the whether forwarded over described result data of upstream router of upstream router B, repeats step S5, till finding the router storing described result data.
In the aforesaid intelligent transformer substation communication method based on information centre's network, described authorization attribute also comprises unauthorized; The data that level of security is high, the authorization attribute of its unique Route Distinguisher is for authorizing; Level of security is general and reach the data of threshold value, and the authorization attribute of its unique Route Distinguisher is delegable; The data that level of security is low, the authorization attribute of its unique Route Distinguisher is unauthorized.
In the aforesaid intelligent transformer substation communication method based on information centre's network, require to define the level of security of data to data level and Forwarding Delay according in ieee standard " IEEE Standard2030Guide for Smart Grid Interoperability of Energy Technology and Information Technologyoperation with the Electric Power System (EPS) and End-Use Applications and Loads ".
In the aforesaid intelligent transformer substation communication method based on information centre's network, if the authorization attribute of unique Route Distinguisher is delegable, then the client receiving described result data can be used as content/service end to store described result data.
In the aforesaid intelligent transformer substation communication method based on information centre's network, described information name also comprises forwarding attribute, if the forwarding attribute of the data that content/service end stores forwards for allowing, then allow from content/service end forwarding data to other clients substation data transmission network, namely in content/service end responsivesubstation data transmission network, need the data access message of other clients of the data that content/service end stores.
In the aforesaid intelligent transformer substation communication method based on information centre's network, described threshold value arranges according to the number of the number of times of the accessed request of data in a certain unit timing statistics and the client of initiation data access request.
Realize the intelligent substation communication system based on information centre's network of preceding method, comprising:
Request module one, for customer end A upstream router-A transmission data access message, the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute;
Return module, for upstream router A forwarding data access message to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher;
Unloading module, for detecting the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A;
Request module two, for customer end B upstream router B send the data access message of described result data;
Detect forwarding module one, for detecting the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then detect other routers on forward-path according to distance and whether store described result data, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to and detect forwarding module two;
Detecting forwarding module two, the whether forwarded over described result data of the upstream router for detecting upstream router B, forwarding to and detecting forwarding module one, till finding the router storing described result data.
The aforesaid intelligent substation communication system based on information centre's network also comprises memory module, for when the authorization attribute of unique Route Distinguisher is delegable, the client receiving described result data can be used as content/service end to store described result data.
The aforesaid intelligent substation communication system based on information centre's network also comprises permission forwarding module, forwarding attribute is also comprised for described information name, when the forwarding attribute of the data that content/service end stores is for allowing to forward, allow from content/service end forwarding data to other clients substation data transmission network, namely in content/service end responsivesubstation data transmission network, need the data access message of other clients of the data that content/service end stores.
Compared with prior art, for the feature of intelligent grid, the present invention sets up a kind of intelligent substation communication system based on information centre's network architecture, content-based name is carried out route and is forwarded the data running through generating, transmission of electricity, power transformation, distribution, electricity consumption and scheduling links, specifically has the following advantages:
1, whether set the authorization attribute of unique Route Distinguisher according to the level of security of data and threshold value, deciding forwarding data by authorization attribute can by client or router duplication, and therefore good, the safe granularity of fail safe can be coarse to fine;
2, when having loss of data or destroying, can initiate data recovery request, the router having these data can response request, date restoring when being conducive to loss of data or destroying;
3, after client obtains data, allow client to store this data according to authorization attribute and forwarding attribute, and can be used as content/service end for other clients providing data services.
To sum up, the present invention can realize shared resources and utilization to real-time and non-real-time information stream, the requirements for access to following intelligent grid magnanimity information can be adapted to, the challenge that the large data of reply electric power are brought, information centre's network detach can be beneficial to calculate, store, communication, application contacts with information, centered by information, redundant data is few, utilize the data buffer storage increased in router to improve data transmission efficiency simultaneously, utilize and carry out naming to content and the route of content-based name fundamentally improves the network capacity of intelligent substation, support comprehensive, the failure monitoring of lean and OA operation analysis, thus the fast development of promotion intelligent substation is to tackle the formation gradually of the large data environment of future electrical energy, give full play to the economic worth of data.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the embodiment of the present invention 1;
Fig. 2 is the method flow diagram of the embodiment of the present invention 2;
Fig. 3 is the method flow diagram of the embodiment of the present invention 3;
Fig. 4 is the method flow diagram of the embodiment of the present invention 4;
Fig. 5 is system configuration schematic diagram of the present invention;
Fig. 6 is communication construction figure of the present invention.
Reference numeral: 1-request module one, 2-returns module, 3-unloading module, 4-request module two, 5-detects forwarding module one, 6-and detects forwarding module two, 7-memory module, and 8-allows forwarding module.
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Embodiment
Embodiments of the invention 1: a kind of intelligent transformer substation communication method based on information centre's network, as shown in Figure 1, comprises the following steps:
S1, customer end A upstream router-A sends data access message, and the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute.
Wherein, described authorization attribute comprises mandate, delegable and unauthorized; The data that level of security is high, the authorization attribute of its unique Route Distinguisher is for authorizing; Level of security is general and reach the data of threshold value, and the authorization attribute of its unique Route Distinguisher is delegable; The data that level of security is low, the authorization attribute of its unique Route Distinguisher is unauthorized.
The level of security of described data requires to define to data level and Forwarding Delay according in ieee standard " IEEE Standard 2030Guide for Smart GridInteroperability of Energy Technology and Information Technology operation with the ElectricPower System (EPS) and End-Use Applications and Loads ".
Described threshold value arranges according to the number of the number of times of the accessed request of data in a certain unit timing statistics and the client of initiation data access request.
S2, upstream router A forwarding data access message is to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher.
S3, detects the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A.
Embodiments of the invention 2: a kind of intelligent transformer substation communication method based on information centre's network, as shown in Figure 2, comprises the following steps:
S1, customer end B sends the access message of result data described in embodiment 1 to its upstream router B;
S2, detect the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then whether store described result data according to apart from other routers on detection forward-path from the close-by examples to those far off, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to step S3;
S3, detects the whether forwarded over described result data of upstream router of upstream router B, repeats step S2, till finding the router storing described result data.
Embodiments of the invention 3: a kind of intelligent transformer substation communication method based on information centre's network, as shown in Figure 3, comprises the following steps:
S1, customer end A upstream router-A sends data access message, and the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute and forward attribute.
Wherein, described authorization attribute also comprises mandate, delegable and unauthorized; The data that level of security is high, the authorization attribute of its unique Route Distinguisher is for authorizing; Level of security is general and reach the data of threshold value, and the authorization attribute of its unique Route Distinguisher is delegable; The data that level of security is low, the authorization attribute of its unique Route Distinguisher is unauthorized.
The level of security of described data requires to define to data level and Forwarding Delay according in ieee standard " IEEE Standard 2030Guide for Smart GridInteroperability of Energy Technology and Information Technology operation with the ElectricPower System (EPS) and End-Use Applications and Loads ".
Described threshold value arranges according to the number of the number of times of the accessed request of data in a certain unit timing statistics and the client of initiation data access request.
S2, upstream router A forwarding data access message is to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher.
S3, detects the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A.
S4, customer end A detects the authorization attribute of unique Route Distinguisher and forwards attribute, and when authorization attribute is delegable, customer end A can be used as content/service end to store described result data; And when forwarding attribute for allowing to forward, allow from content/service end forwarding data to other clients substation data transmission network, i.e. the data access message of other clients of the content/service end data that can content/service end be needed to store in responsivesubstation data transmission network.
Embodiments of the invention 4: a kind of intelligent transformer substation communication method based on information centre's network, as shown in Figure 4, comprises the following steps:
S1, customer end B sends the access message of result data described in embodiment 3 to its upstream router B, and the heading of described access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute.
Wherein, described authorization attribute comprises mandate, delegable and unauthorized; The data that level of security is high, the authorization attribute of its unique Route Distinguisher is for authorizing; Level of security is general and reach the data of threshold value, and the authorization attribute of its unique Route Distinguisher is delegable; The data that level of security is low, the authorization attribute of its unique Route Distinguisher is unauthorized.
The level of security of described data requires to define to data level and Forwarding Delay according in ieee standard " IEEE Standard 2030Guide for Smart GridInteroperability of Energy Technology and Information Technology operation with the ElectricPower System (EPS) and End-Use Applications and Loads ".
Described threshold value arranges according to the number of the number of times of the accessed request of data in a certain unit timing statistics and the client of initiation data access request.
S2, detect the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then whether store described result data according to apart from other routers on detection forward-path from the close-by examples to those far off, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to step S3.
S3, detects the whether forwarded over described result data of upstream router of upstream router B, repeats step S2, till finding the router storing described result data.
S4, customer end B detects the authorization attribute of unique Route Distinguisher and forwards attribute, and when authorization attribute is delegable, customer end B can be used as content/service end to store described result data; And when forwarding attribute for allowing to forward, allow from content/service end forwarding data to other clients substation data transmission network, i.e. the data access message of other clients of the content/service end data that can content/service end be needed to store in responsivesubstation data transmission network.
Embodiment 1 and 3 is all accessing first for certain data in substation data transmission network, and embodiment 2 and 4 is for the data of having accessed in a network.
In embodiment 1 ~ 4, reaching threshold value can adopt following methods to define: timing statistics is set to one week, in timing statistics, the requested number of times k of statistics content, and the quantity M of the client of initiation access request (different clients, same client are repeatedly asked not very), the two all exceedes set point, namely reaches threshold value.
Embodiments of the invention 5: a kind of intelligent substation communication system based on information centre's network realizing method described in embodiment 1 ~ 4, as shown in Figure 5, comprising:
Request module 1, for customer end A upstream router-A transmission data access message, the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute;
Return module 2, for upstream router A forwarding data access message to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher;
Unloading module 3, for detecting the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A;
Request module 24, for customer end B upstream router B send the data access message of described result data;
Detect forwarding module 1, for detecting the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then detect other routers on forward-path according to distance and whether store described result data, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to and detect forwarding module 26;
Detecting forwarding module 26, the whether forwarded over described result data of the upstream router for detecting upstream router B, forwarding to and detecting forwarding module 1, till finding the router storing described result data.
System also comprises memory module 7, and for when the authorization attribute of unique Route Distinguisher is delegable, the client receiving described result data can be used as content/service end to store described result data.
System also comprises permission forwarding module 8, forwarding attribute is also comprised for described information name, when the forwarding attribute of the data that content/service end stores is for allowing to forward, allow from content/service end forwarding data to other clients substation data transmission network, namely in content/service end responsivesubstation data transmission network, need the data access message of other clients of the data that content/service end stores.
Embodiments of the invention 6: a kind of intelligent substation communication system based on information centre's network realizing method described in embodiment 1 ~ 4, as shown in Figure 6, information gathering layer is comprised, based on the substation data transmission network of information centre's network and intelligent substation application layer, information gathering layer gathers the real time data that intelligent substation produces in running, and the substation data transmission network based on information centre's network comprises client, content/service end, the router being with buffer memory and conventional router, the a large amount of real time data produced in running based on the transmission network transmission intelligent substation of information centre's network and intelligent substation accumulative historical data in running, and these data are stored at the router with buffer memory according to the frequent degree used and authorization conditions, be respectively used to carry out dispatching management to intelligent substation, monitoring and other application services, for the various application in substations of application layer provide data, such as information gathering layer comprises relay protection setting and fault location, harmonic wave and the quality of power supply, malfunction monitoring diagnosis and monitoring of equipment and wind light generation prediction and operation management etc.
After router receives the data access message of customer end B, this route is by this message repeating to content/service end J, and J utilizes the demand of result message response customer end B.After customer end B receives desired data, if the authorization attribute of these data is delegable, then customer end B upstream router registration show oneself there are these data, after succeeding in registration, customer end B can be used as the content/service end having these data; And when forwarding attribute for allowing to forward, customer end B can need the demand of other clients of these data in response to network.
Intelligent substation based on information centre's network will provide storage and the service such as multi-party communication, data retransmission by publish/subscribe normal form.For news release-subscription, first publisher completes with clear and definite name and authorizes registration, indicates allow delegable registration and forward when naming.Name mainly comprises publisher's mark and characteristic, and publisher's identification division is the unique identification that content and service can identify, characteristic part is the section name of being specified by publisher, is used for describing content and service.Client C and E completes trust and is registered as subscriber, and being fetched data by content name, content/service end L sends message, and router copies after receiving this message and forwards.
Claims (8)
1. based on an intelligent transformer substation communication method for information centre's network, it is characterized in that, comprise the following steps:
S1, customer end A upstream router-A sends data access message, and the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute;
S2, upstream router A forwarding data access message is to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher;
S3, detects the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A;
S4, the access message of customer end B upstream result data described in router B forwarding step S3;
S5, detect the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then detect other routers on forward-path according to distance and whether store described result data, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to step S6;
S6, detects the whether forwarded over described result data of upstream router of upstream router B, repeats step S5, till finding the router storing described result data.
2. the intelligent transformer substation communication method based on information centre's network according to claim 1, is characterized in that: described authorization attribute also comprises unauthorized; The data that level of security is high, the authorization attribute of its unique Route Distinguisher is for authorizing; Level of security is general and reach the data of threshold value, and the authorization attribute of its unique Route Distinguisher is delegable; The data that level of security is low, the authorization attribute of its unique Route Distinguisher is unauthorized.
3. the intelligent transformer substation communication method based on information centre's network according to claim 1 and 2, it is characterized in that: if the authorization attribute of unique Route Distinguisher is delegable, then the client receiving described result data can be used as content/service end to store described result data.
4. the intelligent transformer substation communication method based on information centre's network according to claim 3, it is characterized in that: described information name also comprises forwarding attribute, if the forwarding attribute of the data that content/service end stores forwards for allowing, then allow from content/service end forwarding data to other clients substation data transmission network.
5. the intelligent transformer substation communication method based on information centre's network according to claim 2, is characterized in that: described threshold value arranges according to the number of the number of times of the accessed request of data in a certain unit timing statistics and the client of initiation data access request.
6. realize the intelligent substation communication system based on information centre's network of method described in Claims 1 to 5 any one, it is characterized in that, comprising:
Request module one (1), for customer end A upstream router-A transmission data access message, the heading of described data access message comprises data access request and unique Route Distinguisher, and described unique Route Distinguisher is the information name comprising authorization attribute;
Return module (2), for upstream router A forwarding data access message to substation data source, data source returns results message to the router in substation data transmission network, and the header of described result message comprises the data access request of response, is supplied to the result data of customer end A and unique Route Distinguisher;
Unloading module (3), for detecting the authorization attribute of unique Route Distinguisher, if authorization attribute is for authorizing or delegable, and router has caching function, then router stores result data, and forwards result data to customer end A;
Request module two (4), for customer end B upstream router B send the data access message of described result data;
Detect forwarding module one (5), for detecting the whether forwarded over described result data of upstream router B, if forwarded over, just detect upstream router B and whether store described result data, if having, then directly forward described result data to customer end B by upstream router B, if do not have, then detect other routers on forward-path according to distance and whether store described result data, from nearest router, obtain described result data, and be transmitted to customer end B; If do not have forwarded over, just turn to and detect forwarding module two (6);
Detecting forwarding module two (6), the whether forwarded over described result data of the upstream router for detecting upstream router B, forwarding to and detecting forwarding module one (5), till finding the router storing described result data.
7. the intelligent substation communication system based on information centre's network according to claim 6, it is characterized in that: also comprise memory module (7), for when the authorization attribute of unique Route Distinguisher is delegable, the client receiving described result data can be used as content/service end to store described result data.
8. the intelligent substation communication system based on information centre's network according to claim 7, it is characterized in that: also comprise and allow forwarding module (8), forwarding attribute is also comprised for described information name, when the forwarding attribute of the data that content/service end stores is for allowing to forward, allow from content/service end forwarding data to other clients substation data transmission network, namely in content/service end responsivesubstation data transmission network, need the data access message of other clients of the data that content/service end stores.
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