CN104253483A - Redundancy protection method and system of transformer substation - Google Patents
Redundancy protection method and system of transformer substation Download PDFInfo
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- CN104253483A CN104253483A CN201410448155.1A CN201410448155A CN104253483A CN 104253483 A CN104253483 A CN 104253483A CN 201410448155 A CN201410448155 A CN 201410448155A CN 104253483 A CN104253483 A CN 104253483A
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Abstract
The invention discloses a redundancy protection method and system of a transformer substation. The method comprises the following steps that A, an icd model file is created, and then, the icd model file is configured and resolved, so a complete IED corresponding to a replaced protection object is generated; B, all data information in a network is monitored, the work state of the network and relay protection equipment is automatically judged according to the monitoring result, if the work of the network and the relay protection equipment is normal, the monitoring is continuously carried out, and otherwise, a step C is executed; C, whether duplex equipment network or single equipment generates abnormal work conditions is judged, and then, the network redundancy of the duplex equipment or the equipment redundancy of the single equipment is realized by a substitution mode according to the complete IED corresponding to the replaced protection object. The method and the system provided by the invention have the advantages that on the basis of not changing the network architecture of the original transformer substation, the redundancy protection is realized by a substitution mode, the functions are complete, the practicability is high, and the method and the system can be widely applied to the field of relay protection.
Description
Technical field
The present invention relates to relay protection field, especially a kind of redundancy protected method of transformer station and system.
Background technology
Explanation of nouns:
IED: intelligent electronic device;
Icd model file: IED capabilities description file, for describing the basic model and service that IED provides, but does not comprise IED instance name and messaging parameter;
SMV:Sampled Measured Value, sampled measurement, also referred to as SV (Sampled Value), a kind of communication service for real-time Transmission digital sample information;
GOOSE message: towards the transformer substation case message of general object is for meeting the mechanism of electric substation automation system rapid message demand in IEC61850 standard;
NMS: namely manufacture message specification is a set of communication protocol for process control system that ISO/IEC9506 standard defines.
Intelligent substation and digital transformer substation enter the large-scale engineering application stage by experimental stage; because the sampled value and trip signal etc. of digital relay protection become digital signal by original analog signal; original protection form is made all to there occurs larger change; the relaying protection of consolidated network can be substituted by other protective devices on the one hand; on the other hand along with the development of network technology, digital protection centralization is made to become possibility.
Current digital relay protection all exists with separately protected form; information transitive dependency networking between each protection is transmitted; each bulk power grid company even starts to adopt point-to-point technology to realize the transfer of data of digital relay protection, and this is not obviously the technique direction of digital relay protection development.A lot of grid company is all attempting digitlization concentrated protection but this relaying configuration too concentrated all also exists certain security risk, so be never widely applied in operating maintenance management etc.And centralized protection must complete the defencive function of all protections, so its amount of calculation and disposal ability require all very huge, also need to make the centralized protection of each transformer station be independently for the product that different substation scale development is different.
The concept of redundancy is a kind of allocation plan that electric power system proposes in order to safe operation, and the dual of relaying protection is also a part for redundancy.But completely independent between dual data, there is no exchanges data, so itself be respective independently system; And general employing sets up standby two net on real-time performance, the mechanism of active/standby devices list net realizes network redundancy.
So lack at present a kind of technology not only can compatible dual equipment network redundancy but also the equipment redundancy of substance equipment can be realized, thus thoroughly solve the equipment redundancy problem of current digital transformer substation Network Basedization.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the invention is: provide a kind of practical, network redundancy and equipment redundancy, the redundancy protected method of transformer station can be realized simultaneously.
Another object of the present invention is: provide a kind of practical, network redundancy and equipment redundancy, the redundancy protection systems of transformer station can be realized simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
A redundancy protected method for transformer station, comprising:
A, establishment icd model file, be then configured icd model file and resolve, thus generate the complete IED corresponding with replaced object of protection;
B, all data messages under residing network to be intercepted, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C;
What operation irregularity situation appearred in C, judgement is dual device network or substance equipment, then adopts the mode substituted to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection.
Further, described steps A, it comprises:
A1, create corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
A2, subscribe to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address that different relay protection device outputs message is different;
A3, according to integrated defencive function and quantity, icd model file to be resolved, thus generate the corresponding complete IED of replaced object of protection quantity.
Further, described step B, it comprises:
B1, the MAC chip adopting FPGA to control receive the Ethernet message information of residing network, and after packet filtering, obtain the subscription message of each relay protection device and issue message;
B2, according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C.
Further, described step B1, it is specially:
The MAC chip adopting FPGA to control receives the Ethernet message information of residing network, and comprehensively adopts the mode that Hash table filters and address is compared one by one obtain the subscription message of each relay protection device and issue message.
Further, described step B2, it is specially:
According to the subscription message of each relay protection device and the operating state of issue message automatic decision network and relay protection device: if the SV message frame number skew rating number received in the unit interval exceedes default range threshold, then think that this relay protection device receives SV message abnormal, now go to and perform step C; If subscribed GOOSE message is not still listened after exceeding the time-to-live, then thinks that the GOOSE message that this relay protection device receives is abnormal, now go to and perform step C; If relay protection device is normally issued GOOSE message at the appointed time or received the GOOSE message issued by it contain the information that defencive function exits, then think and now go to this relay protection device fault and perform step C; Otherwise, then proceed to intercept.
Further, described step C, it is specially:
What operation irregularity situation appearred in judgement is dual device network or substance equipment; and pass through the icd model file complete IED corresponding with replaced object of protection; obtain SV message and the GOOSE message of the another set of subscription of replaced object of protection; then run the protection algorism identical with replaced object of protection and again issue independently GOOSE message, with the equipment redundancy of the network redundancy or substance equipment that realize dual equipment.
Further, described step C is also included in the step confirming again to proceed to listen mode after the normal or fault of the network data recovery that connects of replaced object of protection is repaired.
The present invention solves another technical scheme that its technical problem adopts:
A redundancy protection systems for transformer station, comprising:
Icd document creation, configuration and parsing module, for creating icd model file, being then configured icd model file and resolving, thus generate the complete IED corresponding with replaced object of protection;
Intercept judge module, for intercepting all data messages under residing network, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
Redundancy protecting module, be dual device network or substance equipment for what judge to occur operation irregularity situation, then adopt alternative mode to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection;
The output of described icd document creation, configuration and parsing module is by intercepting judge module and then being connected with the input of redundancy protecting module.
Further, described icd document creation, configuration and parsing module, it comprises:
Creating unit, for creating corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
Dispensing unit, for subscribing to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address outputing message of different relay protection device is different;
Resolution unit, for according to integrated defencive function and quantity, resolves icd model file, thus generates the corresponding complete IED of replaced object of protection quantity;
The output of described creating unit is connected by the input of dispensing unit and then resolution unit, and the output of described resolution unit is connected with the input of intercepting judge module.
Further, described in intercept judge module, it comprises:
Receiving filtration unit, the MAC chip controlled for adopting FPGA receives the Ethernet message information of residing network, and after packet filtering, obtains the subscription message of each relay protection device and issue message;
Judging unit, for according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
The described input of receiving filtration unit is connected with the output of resolution unit, and the described output of receiving filtration unit is connected with the input of judging unit, and the output of described judging unit is connected with the input of redundancy protecting module.
Method beneficial effect of the present invention is: on the basis of the network architecture not changing original transformer station; realize redundancy protecting by the mode substituted, the network redundancy of dual equipment can not only be realized, the equipment redundancy of substance equipment can also be realized; complete function, practical.
Performance benefits effect of the present invention is: on the basis of the network architecture not changing original transformer station; realize redundancy protecting by the mode substituted, the network redundancy of dual equipment can not only be realized, the equipment redundancy of substance equipment can also be realized; complete function, practical.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the overall flow figure of the redundancy protected method of a kind of transformer station of the present invention;
Fig. 2 is the flow chart of steps A of the present invention;
Fig. 3 is the flow chart of step B of the present invention;
Fig. 4 is the structured flowchart of the redundancy protection systems of a kind of transformer station of the present invention;
Fig. 5 is icd document creation of the present invention, configuration and parsing module, intercept the structured flowchart of judge module;
Fig. 6 is the network architecture schematic diagram of digital transformer substation.
Embodiment
With reference to Fig. 1, a kind of redundancy protected method of transformer station, comprising:
A, establishment icd model file, be then configured icd model file and resolve, thus generate the complete IED corresponding with replaced object of protection;
B, all data messages under residing network to be intercepted, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C;
What operation irregularity situation appearred in C, judgement is dual device network or substance equipment, then adopts the mode substituted to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection.
With reference to Fig. 2, be further used as preferred embodiment, described steps A, it comprises:
A1, create corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
A2, subscribe to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address that different relay protection device outputs message is different;
A3, according to integrated defencive function and quantity, icd model file to be resolved, thus generate the corresponding complete IED of replaced object of protection quantity.
With reference to Fig. 3, be further used as preferred embodiment, described step B, it comprises:
B1, the MAC chip adopting FPGA to control receive the Ethernet message information of residing network, and after packet filtering, obtain the subscription message of each relay protection device and issue message;
B2, according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C.
Be further used as preferred embodiment, described step B1, it is specially:
The MAC chip adopting FPGA to control receives the Ethernet message information of residing network, and comprehensively adopts the mode that Hash table filters and address is compared one by one obtain the subscription message of each relay protection device and issue message.
Be further used as preferred embodiment, described step B2, it is specially:
According to the subscription message of each relay protection device and the operating state of issue message automatic decision network and relay protection device: if the SV message frame number skew rating number received in the unit interval exceedes default range threshold, then think that this relay protection device receives SV message abnormal, now go to and perform step C; If subscribed GOOSE message is not still listened after exceeding the time-to-live, then thinks that the GOOSE message that this relay protection device receives is abnormal, now go to and perform step C; If relay protection device is normally issued GOOSE message at the appointed time or received the GOOSE message issued by it contain the information that defencive function exits, then think and now go to this relay protection device fault and perform step C; Otherwise, then proceed to intercept.
Be further used as preferred embodiment, described step C, it is specially:
What operation irregularity situation appearred in judgement is dual device network or substance equipment; and pass through the icd model file complete IED corresponding with replaced object of protection; obtain SV message and the GOOSE message of the another set of subscription of replaced object of protection; then run the protection algorism identical with replaced object of protection and again issue independently GOOSE message, with the equipment redundancy of the network redundancy or substance equipment that realize dual equipment.
Be further used as preferred embodiment, described step C is also included in the step confirming again to proceed to listen mode after the normal or fault of the network data recovery that connects of replaced object of protection is repaired.
With reference to Fig. 4, a kind of redundancy protection systems of transformer station, comprising:
Icd document creation, configuration and parsing module, for creating icd model file, being then configured icd model file and resolving, thus generate the complete IED corresponding with replaced object of protection;
Intercept judge module, for intercepting all data messages under residing network, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
Redundancy protecting module, be dual device network or substance equipment for what judge to occur operation irregularity situation, then adopt alternative mode to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection;
The output of described icd document creation, configuration and parsing module is by intercepting judge module and then being connected with the input of redundancy protecting module.
With reference to Fig. 5, be further used as preferred embodiment, described icd document creation, configuration and parsing module, it comprises:
Creating unit, for creating corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
Dispensing unit, for subscribing to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address outputing message of different relay protection device is different;
Resolution unit, for according to integrated defencive function and quantity, resolves icd model file, thus generates the corresponding complete IED of replaced object of protection quantity;
The output of described creating unit is connected by the input of dispensing unit and then resolution unit, and the output of described resolution unit is connected with the input of intercepting judge module.
With reference to Fig. 5, be further used as preferred embodiment, described in intercept judge module, it comprises:
Receiving filtration unit, the MAC chip controlled for adopting FPGA receives the Ethernet message information of residing network, and after packet filtering, obtains the subscription message of each relay protection device and issue message;
Judging unit, for according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
The described input of receiving filtration unit is connected with the output of resolution unit, and the described output of receiving filtration unit is connected with the input of judging unit, and the output of described judging unit is connected with the input of redundancy protecting module.
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
Embodiment one
The present embodiment to involved in the present invention to basic theories and process be described.
One, the icd document creation of the centralized digital relay protection of data reconstruction Network Based, configuration and cid document analysis
(1) establishment of icd file
The establishment of icd file adopts scd file configuration instrument, and detailed process is: according to function and the quantity of the replaced protection under residing consolidated network, is added the icd file of relevant protected species and quantity by scd file configuration instrument.
(2) configuration of icd file.
Same accessing points and implementor name and communication IP are shared in integrated all protections, and the configuration of company's point of SV and GOOSE is consistent with the corresponding information of replaced object of protection.The object MAC that replaced object of protection is issued and this centralized digital relay protection are distinguished to some extent.
(3) parsing of cid file.
The resolving of cid file is: according to integrated defencive function and quantity, generates the IED that respective amount is complete.Wherein, each IED of generation is separate, with other IED without any conflicting.IED after each parsing all can realize the complete function of replaced object of protection.
Two, the intercepting of whole station network data
(1) hardware is intercepted.
The centralized digital relay protection of data reconstruction Network Based, it need configure the network transmitting-receiving port being no less than two-way at hardware aspect, be connected respectively with A, B network of digital transformer substation.In order to increase the receiving ability of Ethernet, the present invention adopts the FPGA of real-time, peripheral logic rich interface to control MAC chip, receives with the message realizing Ethernet.The way that packet filtering then adopts soft or hard technology to combine: according to the MAC information of subscribing in cid resolution file, hardware aspect adopts hash table to filter, the mode that employing address, software aspect is compared one by one.Protect poll to intercept all data messages on network simultaneously, check that all protections are subscribed to message and issued the working condition of message.
(2) software judges.
If the SV message frame number received in the unit interval, skew rating number exceedes default threshold value, then think that polled protective device receives SV message abnormal; If subscribed GOOSE message is survived at timeAllowedtoLive() be listened not yet after the time, then think that the GOOSE message that polled device receives is abnormal; If polled device does not normally issue GOOSE message at the appointed time, or from network reception to the GOOSE message issued by it warning information that exits containing defencive function, then think polled plant failure.Above three kinds of arbitrary appearance of situation, namely think that polled device loses defencive function, possess replaced condition.The present invention for polling object, carries out poll check to its SV and GOOSE message with replaced protection simultaneously.
Three, centralized redundancy protecting realizes
(1) network redundancy of dual equipment.
When intercepting and analyzing discovery; belong to the network appearance reception abnormal conditions that dual equipment set of device wherein connects; the centralized digital relay protection of data reconstruction Network Based then substitutes and receives abnormal protective device; realize the function of replaced protective device; its concrete methods of realizing is: the centralized digital relay protection of data reconstruction Network Based is by cid file; obtain SV and the GOOSE message of the other a set of subscription of replaced protective device; and run the protection algorism being equivalent to replaced protective device, issue oneself independently GOOSE message.Namely the centralized digital relay protection of data reconstruction Network Based and a set of in addition data all receiving consolidated network of replaced protective device, realize the dual of relaying protection, to reach the object of the network redundancy of dual equipment.
(2) equipment redundancy of substance equipment.
When intercepting and analyzing discovery; belonging to substance equipment because of self hardware and software failure loses relay protection function situation; the centralized digital relay protection of data reconstruction Network Based can substitute the protective device losing defencive function; realize the function of replaced protective device; its concrete methods of realizing is: the centralized digital relay protection of data reconstruction Network Based is by cid file; obtain SV and the GOOSE network data of the subscription of replaced protective device; and run the protection algorism being equivalent to replaced protective device, issue oneself independently GOOSE message.Namely the centralized digital relay protection of data reconstruction Network Based receives the network data identical with replaced protective device, realizes the relay protection function that the latter loses, to reach the equipment redundancy object of substance equipment.
Four, the confirmation of replaced protective device and recovering state
Normal or the replaced protective device fault of the network data recovery that replaced protective device connects is repaired; and after manual confirmation, notify the centralized digital relay protection of data reconstruction Network Based; the latter exits alternative defencive function; and proceed to normal listen mode, wait the appearance of abnormal conditions next time.
Embodiment two
With reference to Fig. 6, the second embodiment of the present invention:
The digital transformer substation network architecture of the present invention, is set to station level, wall and process layer according to layered distribution type, can think substance equipment dual network, also can be duplex equipment list network.And SV and GOOSE network can establish separately net, also can two net unification.
The redundancy protected method of a kind of transformer station of the present invention comprises following four steps:
Step one; the centralized digital relay protection (i.e. centralized redundancy protecting) of data reconstruction Network Based; as independently IED equipment; according to all relaying protection scales of residing system integrating; create icd model file; and subscribe to sampled value SMV and the intake GOOSE message of all relay protection devices needs; that issues all relaying protections outputs GOOSE message (but target MAC (Media Access Control) address is different); simultaneously at MMS layer for it distributes independently IP and IEDName, conflict to avoid producing with other equipment.
Step 2, does not change the network architecture (i.e. Fig. 6) of original digital transformer substation or intelligent substation, intercepts all data messages under residing network.
The centralized digital relay protection of data reconstruction Network Based connects dual network; closely intercept the SMV ordered by relaying protection of each independent form and the GOOSE message of issue in residing dual network; Autonomy judges the operating state of network and relay protection device, and provides judged result in real time.When there is network or relay protection device is abnormal, the centralized digital relay protection of data reconstruction Network Based can drop into fast, realizes transforming plant protecting function free of discontinuities.Whole judgement and protection input process full automation, need not manual intervention.
Step 3, when intercept and determine dual equipment a certain network wherein occur abnormal time, the centralized digital relay protection of data reconstruction Network Based, by adopting another network data that abnormal network is corresponding, realizes the dual of relaying protection.The A network at interval II as shown in Figure 6 occurs abnormal, then adopt the protective device A at the interval II of A network to lose defencive function.The now centralized digital relay protection of data reconstruction Network Based; by the B network data with the interval II received; realize the relay protection function of equivalent interval II protective device A; namely by the protective device B at interval II and the centralized digital relay protection of data reconstruction Network Based; utilize the data of B network; complete the function of two cover relaying protections, to realize the network redundancy of dual equipment.
When intercept and determine substance equipment lose defencive function because of equipment fault time, the centralized digital relay protection of data reconstruction Network Based, realizes the redundancy of digital relay protection by adopting alternative.When the protective device 1 at interval I as shown in Figure 6 occurs abnormal, the centralized digital relay protection of data reconstruction Network Based will substitute the protective device 1 at interval I, to realize the defencive function of protective device 1.And network and protective device are when all normally running, the centralized digital relay protection of data reconstruction Network Based can't affect the operation of other relaying protections.
Step 4, when abnormal network or failed equipment are recovered normal, by manually confirming, and notifying the centralized digital relay protection of data reconstruction Network Based, making it again proceed to listen mode.
Compared with prior art, the present invention has the following advantages:
1, on the basis of the network architecture not changing original digital transformer substation or intelligent substation, by utilizing the data of networking to realize data reconstruction, the network redundancy of dual equipment can not only be realized, the equipment redundancy of substance equipment can also be realized.
2, under normal operation, just closely intercept network data, to Web Publishing data, can not affect the operation of other relaying protection networks.
3, conduct independently IED equipment, can not have with other any IED in whole station and conflict, can its action behavior of clear differentiation.
4, alternative is adopted to realize the redundancy of digital relay protection.Protection inside has multiple digital relay protection algorithm, correctly can realize the function of route protection, tranformer protection, bus protection.
5, real-time, carry out data processing and calculating in real time, can drop into fast when other proterctive equipment occur abnormal, thus realize the free of discontinuities of transforming plant protecting function.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (10)
1. a redundancy protected method for transformer station, is characterized in that: comprising:
A, establishment icd model file, be then configured icd model file and resolve, thus generate the complete IED corresponding with replaced object of protection;
B, all data messages under residing network to be intercepted, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C;
What operation irregularity situation appearred in C, judgement is dual device network or substance equipment, then adopts the mode substituted to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection.
2. the redundancy protected method of a kind of transformer station according to claim 1, it is characterized in that: described steps A, it comprises:
A1, create corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
A2, subscribe to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address that different relay protection device outputs message is different;
A3, according to integrated defencive function and quantity, icd model file to be resolved, thus generate the corresponding complete IED of replaced object of protection quantity.
3. the redundancy protected method of a kind of transformer station according to claim 2, it is characterized in that: described step B, it comprises:
B1, the MAC chip adopting FPGA to control receive the Ethernet message information of residing network, and after packet filtering, obtain the subscription message of each relay protection device and issue message;
B2, according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then perform step C.
4. the redundancy protected method of a kind of transformer station according to claim 3, it is characterized in that: described step B1, it is specially:
The MAC chip adopting FPGA to control receives the Ethernet message information of residing network, and comprehensively adopts the mode that Hash table filters and address is compared one by one obtain the subscription message of each relay protection device and issue message.
5. the redundancy protected method of a kind of transformer station according to claim 3, it is characterized in that: described step B2, it is specially:
According to the subscription message of each relay protection device and the operating state of issue message automatic decision network and relay protection device: if the SV message frame number skew rating number received in the unit interval exceedes default range threshold, then think that this relay protection device receives SV message abnormal, now go to and perform step C; If subscribed GOOSE message is not still listened after exceeding the time-to-live, then thinks that the GOOSE message that this relay protection device receives is abnormal, now go to and perform step C; If relay protection device is normally issued GOOSE message at the appointed time or received the GOOSE message issued by it contain the information that defencive function exits, then think and now go to this relay protection device fault and perform step C; Otherwise, then proceed to intercept.
6. the redundancy protected method of a kind of transformer station according to claim 3, it is characterized in that: described step C, it is specially:
What operation irregularity situation appearred in judgement is dual device network or substance equipment; and pass through the icd model file complete IED corresponding with replaced object of protection; obtain SV message and the GOOSE message of the another set of subscription of replaced object of protection; then run the protection algorism identical with replaced object of protection and again issue independently GOOSE message, with the equipment redundancy of the network redundancy or substance equipment that realize dual equipment.
7. the redundancy protected method of a kind of transformer station according to claim 3, is characterized in that: described step C is also included in the step confirming again to proceed to listen mode after the normal or fault of the network data recovery that connects of replaced object of protection is repaired.
8. a redundancy protection systems for transformer station, is characterized in that: comprising:
Icd document creation, configuration and parsing module, for creating icd model file, being then configured icd model file and resolving, thus generate the complete IED corresponding with replaced object of protection;
Intercept judge module, for intercepting all data messages under residing network, and according to the operating state of the result automatic decision network of intercepting and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
Redundancy protecting module, be dual device network or substance equipment for what judge to occur operation irregularity situation, then adopt alternative mode to realize the network redundancy of dual equipment or the equipment redundancy of substance equipment according to the complete IED corresponding with replaced object of protection;
The output of described icd document creation, configuration and parsing module is by intercepting judge module and then being connected with the input of redundancy protecting module.
9. the redundancy protection systems of a kind of transformer station according to claim 8, is characterized in that: described icd document creation, configuration and parsing module, and it comprises:
Creating unit, for creating corresponding icd model file according to the function of the replaced object of protection under residing network and quantity;
Dispensing unit, for subscribing to sampled value SMV needed for all relay protection devices and intake GOOSE message, and issue all relay protection devices output message, thus the configuration of the icd model file completed, wherein, the target MAC (Media Access Control) address outputing message of different relay protection device is different;
Resolution unit, for according to integrated defencive function and quantity, resolves icd model file, thus generates the corresponding complete IED of replaced object of protection quantity;
The output of described creating unit is connected by the input of dispensing unit and then resolution unit, and the output of described resolution unit is connected with the input of intercepting judge module.
10. the redundancy protection systems of a kind of transformer station according to claim 9, is characterized in that: described in intercept judge module, it comprises:
Receiving filtration unit, the MAC chip controlled for adopting FPGA receives the Ethernet message information of residing network, and after packet filtering, obtains the subscription message of each relay protection device and issue message;
Judging unit, for according to the subscription message of each relay protection device and the operating state issuing message automatic decision network and relay protection device, if network and relay protection device working properly, then proceed to intercept, otherwise, then go to redundancy protecting module;
The described input of receiving filtration unit is connected with the output of resolution unit, and the described output of receiving filtration unit is connected with the input of judging unit, and the output of described judging unit is connected with the input of redundancy protecting module.
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Effective date of registration: 20170920 Address after: 530023 Democratic Road, the Guangxi Zhuang Autonomous Region, Nanning, No. 6-2 Co-patentee after: ELECTRIC POWER Research Institute CHINA SOUTHERN POWER GRID Patentee after: ELECTRIC POWER SCIENCE & RESEARCH INSTITUTE OF GUANGXI POWER GRID Corp. Address before: 530023 Democratic Road, the Guangxi Zhuang Autonomous Region, Nanning, No. 6-2 Patentee before: ELECTRIC POWER SCIENCE & RESEARCH INSTITUTE OF GUANGXI POWER GRID Corp. |