CN102904632B - A kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open - Google Patents
A kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open Download PDFInfo
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Abstract
The present invention relates to and a kind ofly it is characterized in that: first remove original business based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, then set up new service path, ensure that the transmitting-receiving of route protection business is in same route at any time; Specifically comprise circuit optical fiber differential protection channel failure occur time business self-healing and former communication network fault restoration after business return two processes; 1) business self-healing procedure when circuit optical fiber differential protection channel failure occurs: the Dynamic-Recovery passage based on control plane is set in circuit optical fiber differential protective passage, formed first to tear open and build mode passage afterwards, open blocking, recalculate channel time delay, adjusting device running parameter, completes self-healing procedure; 2) business return course after former communication network fault restoration: ASON network failure is repaired, remove business rerouting recovering passage, line protective devices monitoring channel fault, ASON network sets up the original design routing channel of business again, and business returns.The present invention realizes optical fiber differential protective passage transmitting-receiving same route at any time, ensures that transmit after receive time delay is identical, for power circuit optical fiber differential protective business.
Description
Technical field
The present invention relates to a kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, belonging to the communication technical field of electrical power transmission system.
Background technology
The trunk transit network that current electric power system is built adopt mainly based on the looped network protection technology of SDH, network configuration based on looped network, chain is auxiliary, the TDM Circuit Service that bearer service is mainly traditional, its fail safe and QoS all have good guarantee.But along with the fast development of data service, business demand presents that bandwidth is more and more, circuit transmission Performance And Reliability requirement more and more high.The development of service network and the expansion of network size, make the transport network of current enterprise schema based on looped network expose the problem self being difficult to overcome.The proposition of ASON (ASON) technology is exactly that rapid growth and reliability requirement in order to adapt to power business improves constantly.
ASON is the automatic switched transport network based on SDH and optical transfer network (OTN), it has carried out the optical transfer network of configuration and connection management with control plane, take optical fiber as physical transfer medium, what the optical transmission systems such as SDH and OTN were formed has intelligent optical transfer network.Can be divided into according to its function and transmit plane, control plane and management plane, these three planes are relatively independent, co-ordination again mutually.Compared with traditional tranmission techniques, the maximum feature of ASON technology is the introduction of control plane, the major function of control plane supports to set up, remove and safeguard the ability of end to end connection, and select most suitable path by routing, and the needs be closely related therewith provide suitable title and addressing mechanism.
The SDH optical transport technology passage that power telecom network uses configures by center webmaster is unified, not supporting business passage intelligence multiple faults self-healed protection.Although power business grid protection can be realized recover by anti-multipoint fault by introducing ASON technology, can provide self-healed protection to business such as EMS, metering, PMU, stable, schedule voice.But existing ASON protection, the self-healed protection mechanism recovered are used for circuit longitudinal differential protection business and can cause protective device misoperation, can cause electrical network production accident.Mainly owing to can not ensure when communication port self-healing switches switching in moment simultaneously, there is delay inequality in transceiver channel, and new tunnel time delay and old channel time delay is inconsistent causes protective device sample error after passage bridge.
Due to traditional SDH network generation self-healing channel failure switch, repair return time; no matter be that employing has the Self-healing Rings of APS protocol mode to switch or the SNCP without APS protocol mode protects; because its transceiver channel switches on heterogeneous networks equipment; switching device shifter all can not ensure Complete Synchronization operate time; there is transient difference in switching instant; cause service channel optical signal transceiver path may exist inconsistent; and protect new tunnel may there is delay inequality with original passage, and protective device does not have identification communication fault to recalculate channel time delay.This two problems will cause differential protection sampled value mistake, cause causing protective device to occur malfunction.Therefore conventional communication networks protected mode can not be adopted to realize passage self-healing.Therefore, clearly propose optical fiber differential protective passage in south electric network and national grid code must not apply SDH and protect self-healing function.Therefore, when disaster generation, optical cable accident, owing to there is no passage self-healed protection mechanism, reduce the reliability of protection channel, considerably increase the difficulty that communication scheduling adjusts passage temporarily.
At present, conventional pilot wire relays all adopts the synchronous method based on data channel, and the two-way consistency of communication channel delay is the prerequisite ensureing both sides protective device sample-synchronous.
Existing ASON recovers rerouting mechanism in agreement and producer's product, adopts " first build and tear open afterwards " mechanism, all first sets up new tunnel, then business is switched to new tunnel, finally remove old passage when link single fiber fault, the soft heavy-route of webmaster, business return.This mechanism is the shortest in order to ensure service outage duration, is applicable to public network operator and uses.The recovery rerouting mechanism that ASON " first builds and tears open afterwards " can not ensure when there is communication port self-healing switching equally switching in moment simultaneously, and transceiver channel exists the problem of delay inequality in short-term.
Summary of the invention
Object of the present invention, being can not realize optical fiber differential protective business self-healing problem for solving existing SDH, ASON network, providing a kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open.
Object of the present invention can reach by taking following technical scheme:
A kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, it is characterized in that: first remove original business, then set up new service path, then allow work flow on new path, ensure that the transmitting-receiving of route protection business is in same route at any time; Specifically comprise circuit optical fiber differential protection channel failure occur time business self-healing and former communication network fault restoration after business return two processes;
1) when circuit optical fiber differential protection channel failure occurs, business self-healing procedure is as follows:
(1) the Dynamic-Recovery passage based on control plane is set in circuit optical fiber differential protective passage, is formed first to tear open and build mode passage afterwards;
(2) when the normal channel that generation interruption of optical cables or passage intermediate equipment fault cause interrupts, in 50ms, ASON network does not carry out path protection;
(3) line protective devices monitor communication port and have interrupted, and forming apparatus locking, do not carry out misoperation, and make ASON network discharge normal transceiver channel resource, the described device monitoring time is less than 100ms;
(4) delay time deliberately at least that 100ms is to allow after line protective devices locking, ASON network heavy-route sets up the consistent rerouting recovering passage of transmitting-receiving route;
(5) when line protective devices monitoring communication port recovers normal, open blocking, recalculate channel time delay, adjusting device running parameter, completes self-healing procedure, recovers normally to work, whole 2 ~ 4 seconds operate times of self-healing procedure time;
2) after former communication network fault restoration, business return course is as follows:
(1) ASON network failure is repaired;
(2) remove business rerouting recovering passage, line protective devices monitoring channel fault, enters blocking;
(3) deliberately time delay is greater than 100ms to allow after line protective devices locking, and ASON network sets up the original design routing channel of business again, and business returns;
(4) line protective devices monitoring communication port is normal, recalculates channel time delay, adjusting device running parameter, and unlocking replys normal operating conditions.
Object of the present invention can also reach by taking following technical scheme:
Further, any moment in passage self-healing and return course ensures transceiver path consistency, bearing fiber differential protection business.
Further, when described channel failure occurs, after business self-healing procedure and former communication network fault restoration, business return course is used for the hard heavy-route of ASON network and soft heavy-route;
1) hard heavy-route service is used for responding event of failure, for calling provides the Restoration Mechanism of fault; When a link or network element break down in a heavy-route territory, this calling is released at the edge in heavy-route territory, when activating heavy-route service, the release of source node blocked call, and set up an alternative connection to edge, heavy-route territory destination node; In hard heavy-route process, connecting prior to being just released before alternative connection establishment at first, being formed " first tear open and build afterwards ";
2) soft heavy-route service is the one mechanism of the calling heavy-route of carrying out in order to the object managed, when an activation heavy-route service, heavy-route assembly can set up the position of a reroute connection to the assembly formulated, when reroute connection is established, bring into use reroute connection, and delete initial connection, be called " first build and tear open afterwards "; The machine-processed webmaster newly applied for a patent should be able to be selected " first tear open and build afterwards ", namely first removes operating path, then builds restoration path, the business transmitting-receiving of guarantee same route at any time.
Further; first remove original service aisle when described " first tear open and build afterwards " Restoration Mechanism needs in optical channel fault recovery and replys to intersect; discharge the Internet resources that it takies; and then carry out recovering and replying, allow line protective devices can have one normally from the operating state conversion being latched to unlocking.
The present invention has following outstanding beneficial effect:
1, the present invention is owing to being first remove original business, then new service path is set up, allow work flow on new path again, ensure that the transmitting-receiving of route protection business is in same route at any time, namely the ASON network communication channel mode of building afterwards of first tearing open is applied to optical fiber differential protective service communication and automatically recovers, therefore, power telecom network bearing fiber differential protection business intelligence self-healing function can be realized; Solve existing SDH, ASON network and can not realize optical fiber differential protective business self-healing problem.
2, adopt the method that the present invention relates to, transmitting-receiving route can be there will not be in service communication fault self-recovery, passage bridge process inconsistent, transceiver communication time delay can not be caused inconsistent.In service communication fault self-recovery, passage bridge process, allow protective device perceptual channel fault, take locking device and recalculate channel time delay measure, adjusting device running parameter, avoids malfunction.
3, the present invention utilizes ASON optical-fiber network Based Intelligent Control plane channel rerouting recovering function theoretically, utilizes " first tear open and build afterwards " mechanism of recovery/backward channel, can realize optical fiber differential protective passage transmitting-receiving same route at any time, ensure that transmit after receive time delay is identical.Propose new ASON network intelligence control plane agreement modification scheme to realize the automatic recovery capability of anti-multipoint fault of power circuit optical fiber differential protective passage, provide safeguard for powerline network realizes intelligent grid service control self-healing ability.Through experimental test checking, the program can be used in power circuit optical fiber differential protective business.
Accompanying drawing explanation
Fig. 1 does not arrange protection channel in ASON network, arranges Dynamic-Recovery (first tear open and the build mode afterwards) access diagram based on control plane.
Fig. 2 is the schematic diagram that ASON network does not carry out path protection in 50ms.
Fig. 3 is that ASON network forms locking, discharges the schematic diagram of normal transceiver channel resource.
Fig. 4 is that after line protective devices locking, ASON network heavy-route sets up the consistent rerouting recovering access diagram of transmitting-receiving route.
Fig. 5 is that line protective devices monitoring communication port recovers normal, opens blocking schematic diagram.
Fig. 6 is that line protective devices monitoring communication port recovers normal, opens blocking schematic diagram.
Fig. 7 is that ASON network failure repairs schematic diagram.
Fig. 8 is that ASON network is removed business rerouting recovering passage, entered blocking schematic diagram.
Fig. 9 is that communication port is normal, unlocking replys normal operating conditions schematic diagram.
Embodiment
Referring to figs. 1 through Fig. 9, the present embodiment relate to based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, it is characterized in that: first remove original business, then new service path is set up, allow work flow on new path again, ensure that the transmitting-receiving of route protection business is in same route at any time; Specifically comprise circuit optical fiber differential protection channel failure occur time business self-healing and former communication network fault restoration after business return two processes;
Referring to figs. 1 through Fig. 5, circuit optical fiber differential protection business self-healing procedure is as follows:
With reference to Fig. 1, circuit optical fiber differential protection passage does not arrange protection channel in ASON network, arranges Dynamic-Recovery (first tear open and the build mode afterwards) passage based on control plane.
With reference to Fig. 2, when the normal channel that generation interruption of optical cables or passage intermediate equipment fault cause interrupts, ASON network does not carry out path protection in 50ms.
With reference to Fig. 3, line protective devices monitor communication port and have interrupted (the device monitoring time is less than 100ms), can forming apparatus locking (not carrying out misoperation).ASON network discharges normal transceiver channel resource.
With reference to Fig. 4, delay time intentional (being greater than 100ms, to allow line protective devices locking) afterwards ASON network heavy-route set up the consistent rerouting recovering passage of transmitting-receiving route.
With reference to Fig. 5, line protective devices monitoring communication port recovers normal, and open blocking, recalculate channel time delay, adjusting device running parameter, completes self-healing procedure, recovers normally to work.Whole about 2 ~ 4 seconds operate times of self-healing procedure time.
With reference to Fig. 6 to Fig. 9, former communication network failover process is as follows:
With reference to Fig. 6, when former communication network fault restoration, the reply mode of ASON communication port is also similar, requires " first tear open and build afterwards ".
With reference to Fig. 7, remove business rerouting recovering passage, line protective devices monitoring channel fault, enters blocking.
With reference to Fig. 8, after intentional time delay (being greater than 100ms, to allow line protective devices locking), ASON network sets up the original design routing channel of business again, and business returns.
With reference to Fig. 9, line protective devices monitoring communication port is normal, recalculates channel time delay, adjusting device running parameter, and unlocking replys normal operating conditions.
In the present embodiment, the heavy-route of described ASON is divided into hard heavy-route and soft heavy-route:
1) hard heavy-route service is used for responding event of failure, for calling provides the Restoration Mechanism of fault; When a link or network element break down in a heavy-route territory, this calling is released at the edge in heavy-route territory, when activating heavy-route service, the release of source node blocked call, and set up an alternative connection to edge, heavy-route territory destination node; In hard heavy-route process, connecting prior to being just released before alternative connection establishment at first, being formed " first tear open and build afterwards ";
2) soft heavy-route service is the one mechanism of the calling heavy-route of carrying out in order to the object managed, when an activation heavy-route service, heavy-route assembly can set up the position of a reroute connection to the assembly formulated, when reroute connection is established, bring into use reroute connection, and delete initial connection, be called " first build and tear open afterwards "; The machine-processed webmaster newly applied for a patent should be able to be selected " first tear open and build afterwards ", namely first removes operating path, then builds restoration path, the business transmitting-receiving of guarantee same route at any time.
First remove original service aisle when described " first tear open and build afterwards " Restoration Mechanism needs in optical channel fault recovery and replys to intersect; discharge the Internet resources that it takies; and then carry out recovering and replying, allow line protective devices can have one normally from the operating state conversion being latched to unlocking.
" first tear and build afterwards " inverse process that simply can be interpreted as existing " first build and tear open afterwards " open; i.e. break-before-make; the thought of the method is when business carries out recovery heavy-route, operation such as optimization heavy-route, reply etc.; always first remove original business; and then set up new service path; allow work flow on new path again, all can ensure that the transmitting-receiving of route protection business is always in same route so at any time.
So-called " first tear open and build afterwards " Restoration Mechanism is exactly in optical channel fault recovery and first removes original service aisle intersection when replying; discharge the Internet resources that it takies; and then carry out recovering and replying, allow line protective devices can have one normally from identifying that failure locking is to the operating state conversion of repairing trouble shooting locking.
According to the particular/special requirement of Nan Wang company, flames of war, Huawei, Zhong Xingdeng producer develop " first tear open and build afterwards " machine-processed special installation on existing ASON equipment.Through reality test, optical channel " first tear open and build afterwards " Restoration Mechanism when light path fault can meet the technical requirement of line differential protection optical channel, and malfunction does not appear in line differential protection equipment, illustrates that this technology can be applied to electrical network.
The present invention is expected to embody rule in south electric network actual communication networks, will make optical fiber differential protective business realizing communication self-healing, and greatly improve operation of power networks reliability.
This patent mechanism realizes being do not have message intercommunication mechanism based on current communication equipment and proterctive equipment, and the working mechanism's mating protection equipment changing existing communication equipment normally works.
Can design the message mechanism of a kind of communication equipment and proterctive equipment intercommunication in the future, allow the operation conditions of communication network notify protective device, the informing operating conditions communication equipment of protective device, two cover systems coordinate operation, can realize final purpose of the present invention.
Namely message is sent out before communicator action to protective device locking; protective device completes locking also to communication equipment acknowledge message; communicator completes self-healing action latecomer message to protective device, protective device test channel, calculation delay, unlocking, then gives communication equipment acknowledge message.
Below the abbreviation that the present invention relates to and Key Term are made an explanation:
About abbreviation:
ASON(AutomaticallySwitchedOpticalNetwork), ASON is referred to
SDH(SynchronousDigitalHierarchy), SDH (Synchronous Digital Hierarchy) is referred to
TDM(Time-DivisionMultiplexing), time-sharing multiplex is referred to
OTN(OpticalTransportNetwork), optical transport network is referred to
Claims (3)
1. one kind based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, it is characterized in that: first remove original business, then set up new service path, then allow work flow on new path, ensure that the transmitting-receiving of route protection business is in same route at any time; Specifically comprise circuit optical fiber differential protection channel failure occur time business self-healing and former communication network fault restoration after business return two processes;
1) when circuit optical fiber differential protection channel failure occurs, business self-healing procedure is as follows:
(1) the Dynamic-Recovery passage based on control plane is set in circuit optical fiber differential protective passage, is formed first to tear open and build mode passage afterwards;
(2) when the normal channel that generation interruption of optical cables or passage intermediate equipment fault cause interrupts, in 50ms, ASON network does not carry out path protection;
(3) line protective devices monitor communication port and have interrupted, and forming apparatus locking, do not carry out misoperation, and make ASON network discharge normal transceiver channel resource, the described device monitoring time is less than 100ms;
(4) delay time deliberately at least that 100ms is to allow after line protective devices locking, ASON network heavy-route sets up the consistent rerouting recovering passage of transmitting-receiving route;
(5) when line protective devices monitoring communication port recovers normal, open blocking, recalculate channel time delay, adjusting device running parameter, completes self-healing procedure, recovers normally to work, 2-4 second whole operate time self-healing procedure time;
2) after former communication network fault restoration, business return course is as follows:
(1) ASON network failure is repaired;
(2) remove business rerouting recovering passage, line protective devices monitoring channel fault, enters blocking;
(3) deliberately time delay is greater than 100ms to allow after line protective devices locking, and ASON network sets up the original design routing channel of business again, and business returns;
(4) line protective devices monitoring communication port is normal, recalculates channel time delay, adjusting device running parameter, and unlocking replys normal operating conditions.
2. according to claim 1 a kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open, it is characterized in that: when described channel failure occurs, after business self-healing procedure and former communication network fault restoration, business return course is used for the hard heavy-route of ASON network and soft heavy-route;
1) hard heavy-route is used for responding event of failure, for calling provides the Restoration Mechanism of fault; When a link or network element break down in a heavy-route territory, this calling is released at the edge in heavy-route territory, when activating heavy-route service, the release of source node blocked call, and set up an alternative connection to edge, heavy-route territory destination node; In hard heavy-route process, connecting prior to being just released before alternative connection establishment at first, being formed " first tear open and build afterwards ";
2) soft heavy-route is the one mechanism of the calling heavy-route of carrying out in order to the object managed, when an activation heavy-route service, heavy-route assembly can set up the position of a reroute connection to the assembly formulated, when reroute connection is established, bring into use reroute connection, and delete initial connection, be called " first build and tear open afterwards "; The machine-processed webmaster of calling heavy-route can be selected " first tear open and build afterwards ", namely first removes operating path, then builds restoration path, the business transmitting-receiving of guarantee same route at any time.
3. according to claim 1 a kind of based on first tearing the automatic switched transport network self-healing recovery method built afterwards open; it is characterized in that: described " first tear open and build afterwards " Restoration Mechanism needs are first removed original service aisle when optical channel fault recovery and reply and intersected; discharge the Internet resources that it takies; and then carry out recovering and replying, allow line protective devices can have one normally from identifying that failure locking is to the operating state conversion of repairing trouble shooting locking.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104393914B (en) * | 2014-11-10 | 2017-01-25 | 国家电网公司 | A multiplex route recovering method for an optical fiber differential protection device |
| CN106470159B (en) * | 2015-08-18 | 2020-09-15 | 中兴通讯股份有限公司 | Tunnel convergence method and device |
| CN105610713B (en) * | 2015-12-22 | 2019-03-19 | 国网湖北省电力公司咸宁供电公司 | A kind of ASON method for routing of Electric control business |
| CN105530133B (en) * | 2015-12-22 | 2018-09-21 | 武汉大学 | A kind of Electric control business intelligence restoration methods |
| CN105871715B (en) * | 2016-06-08 | 2019-08-30 | 中电华瑞技术有限公司 | Under a kind of power line network repair way by method and apparatus |
| CN106160844B (en) * | 2016-08-19 | 2018-09-11 | 中国南方电网有限责任公司 | The test method and device of automatically switching optical networks channel transceiver path consistency |
| CN108924673B (en) * | 2018-06-12 | 2021-12-03 | 中国电力科学研究院有限公司 | Method and system for self-healing multipoint faults of optical channel |
| CN109039699B (en) * | 2018-06-21 | 2021-02-09 | 贵州电网有限责任公司 | QoS-constrained service fault recovery method for power OTN communication network |
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| JP2010226393A (en) * | 2009-03-23 | 2010-10-07 | Nec Corp | Method and system for setting of path by autonomous distributed control, and communication device |
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