CN106911416A - Intelligent distribution network failure detector based on Packet Transport Network and wireless network - Google Patents
Intelligent distribution network failure detector based on Packet Transport Network and wireless network Download PDFInfo
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- CN106911416A CN106911416A CN201710152852.6A CN201710152852A CN106911416A CN 106911416 A CN106911416 A CN 106911416A CN 201710152852 A CN201710152852 A CN 201710152852A CN 106911416 A CN106911416 A CN 106911416A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0066—Provisions for optical burst or packet networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/003—Arrangements to increase tolerance to errors in transmission or reception timing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Intelligent distribution network failure detector based on Packet Transport Network and wireless network, including management module, acquisition module, differential protection module, measurement control module and information exchange with pair when terminal.Differential protection module is used to receive the distributed differential protection logic function of SV, goose data execution, and CAN network datas, internal Ethernet data are interacted with management module；Measurement control module include pair when unit, information acquisition unit and control unit; realize that time adjustment function interacts SV data and goose data with neighboring devices; interactive maintenance information is realized by the ini file that inner stipulation is brought based on internal bus with management module is received, with differential protection module by the internal two-way port mouthfuls of interaction data of 50M.Described device uses master-salve clock scheme, and coding transmission is carried out to the time, using the symmetry and Time delay measurement technology of network link, realizes the synchronization of frequency, phase and the absolute time of master-salve clock.
Description
Technical field
The present invention relates to intelligent distribution network detection field, specific design is based on the intelligent power distribution of Packet Transport Network and wireless network
Net failure detector.
Background technology
Traditional distribution network failure detection depends on distribution main website, when distribution main website unify pair.But this
Class mode is because to depending on unduly for main website, reliability is poor.The proposition of distributed differential protection can efficiently solve such asking
Topic, but technology and device conceptual phase are still within, and synchronous this technology when cannot avoid between distributed differential gear pair
Bottleneck.
And PTN (Packet Transport Network, Packet Transport Network) passes through optical transport network framework, in IP operation
An aspect is provided with and bottom light-transmitting medium between, it is transmitted for the sudden and statistic multiplexing of Packet Service flow
It is required that and design, with Packet Service as core and support that multi-service is provided, with lower overall use cost (TCO), while
Adhere to the traditional advantage of optical transport, including high availability and reliability, efficient bandwidth management mechanism and traffic engineering, easily
OAM and webmaster, security expansible, higher etc..In application to distribution network, some distribution regions carry out fiber cable laying difficulty in addition
It is larger, it is that one kind efficiently solves method using 4G wireless telecommunications.But these technologies are not yet detected in distribution network failure and are distributed
Formula differential protection direction is applied, and how to be effectively combined two kinds of communication interactive modes is also an efficiently distributed differential solution
Protect a key technology of application problem.
The content of the invention
The conventional electrical distribution net fault detect present in solution prior art is relied on main website transition, distributed differential protection
The technical problems such as synchronous bottleneck, in consideration of it, the purpose of the present invention is：Intelligent distribution network event based on Packet Transport Network and wireless network
Barrier detection means, using master-salve clock scheme, coding transmission is carried out to the time, using the symmetry and Time delay measurement of network link
Technology, realizes the synchronization of frequency, phase and the absolute time of master-salve clock, further realizes communication and protects relatively independent, nothing
Line information exchange and optical fiber information interaction approach is standby each other or the distributed differential protection that is used in mixed way.
The present invention uses following technical scheme.
A kind of intelligent distribution network failure detector based on Packet Transport Network and wireless network, the intelligent distribution network failure
Detection means include management module, acquisition module, differential protection module, measurement control module, information exchange with pair when terminal and
Internal bus；It is characterized in that：
Management module, acquisition module, differential protection module, measurement control module and information exchange with pair when terminal it is all logical
Internal bus is crossed to be attached.
Acquisition module is measured corresponding to this intelligent distribution network failure detector by the secondary access of actual electrical quantity
The voltage x current information of side circuit and the division information of switch, and management module is transferred to by internal bus, by management mould
Block is distributed to differential protection module and measurement control module；
Measurement control module by information exchange with pair when terminal complete and adjacent intelligent distribution network failure detector
Data interaction and time adjustment function；
Voltage x current information and the division information of switch and measurement control that differential protection module is measured according to acquisition module
The data of the adjacent intelligent distribution network failure detector that molding block is received are poor according to differential relaying algorithm set in advance
Dynamic protection judges, including differential protection computing unit and definite value synchronism switching unit, realizes distributed differential protection function, and lead to
The mode of tripping operation regulation and control is crossed, is exported by measuring control module.
The present invention further includes following preferred scheme：
It is described measurement control module include information acquisition unit, control unit and pair when unit, wherein control unit control
Information acquisition unit, pair when the interaction of unit use information with pair when terminal realize enter with adjacent intelligent distribution network failure detector
Row data interaction and time adjustment function；
Information exchange with pair when terminal support wireless network TD-LTE communication and support fiber groupings transmission net PTN communication work(
Energy.
Information acquisition unit can be set three kinds of information interaction approach by the measurement control module：
Wherein, the interactive mode 1 represents that intelligent distribution network failure detector only receives fiber groupings transmission net PTN and enters
Row information is interacted, and now data and synchronizing signal are obtained from PTN；The interactive mode 2 represents intelligent distribution network fault detect
Device only receives wireless network TD-LTE carries out information exchange, and now data and synchronizing signal are obtained from wireless terminal accessing device
Take；The interactive mode 3 represents that intelligent distribution network failure detector carries out information exchange by PTN, TD-LTE mixed networking,
It is higher than TD-LTE now to set PTN priority.
Intelligent distribution network failure detector default information acquiring unit interactively 1 carries out information exchange, is receiving
Data and it is synchronous can not meet when requiring, automatically switch to interactive mode 2 and run；Will if data and synchronization still can not meet
Ask, then it is assumed that data channel exception, report and alarm；If current intelligent distribution network failure detector and adjacent intelligent distribution network
Failure detector existing interactively 1, has interactively 2 in the case of carry out information exchange, then the intelligence is matched somebody with somebody again
Electric network fault detection means then switches to interactive mode 3 to run.
The unit time uses IRIG-B synchronous protocols at described pair, and with IEEE1588V2 alternately synchronous protocols, leads to
Cross information exchange with pair when terminal using 2pin RS422 twisted-pair feeder synchronous transfer media, realize optical fiber PTN communications, wireless TD-
IEEE1588V2, IRIG-B time adjustment function provided respectively under LTE interactions, the time adjustment function are corresponding with the interactive mode, hand over
Mode when when mutual mode 1 and interactive mode 3 using optical fiber IEEE1588V2 pairs, interactive mode 2 is carried using wireless TD-LTE
For mode at IRIG-B pairs.
The differential protection module includes differential protection computing unit and definite value synchronism switching unit；The differential protection meter
Calculate unit carries out differential protection judgement according to differential relaying algorithm set in advance, and by way of regulation and control of tripping, by surveying
Amount control module output, realizes distributed differential protection function；
Changed when with net topology, the definite value synchronism switching unit of differential protection module is matched somebody with somebody by with measurement control module
Close, receive measurement control module the topological arrangement information and definite value sent, the corresponding relaying configuration of on-line synchronous change operation and
Definite value parameter, synchronizes with other intelligent distribution network failure detectors, according to topological arrangement information, performs bus differential and protects
Shield and line differential protection；Realized by measuring control module between two adjacent intelligent distribution network failure detectors
The SV message interactions data of IEC61850 9-2 forms carry out line differential protection judgement.
The beneficial effects of the invention are as follows：
(1) during PTN1588 high accuracy pair：Using master-salve clock scheme, coding transmission is carried out to the time, using network link
Symmetry and Time delay measurement technology, realize the synchronization of frequency, phase and the absolute time of master-salve clock.
(2) PTN and wireless synchronism switching：Support that the generalization of PTN and wireless region is used, terminal installation is realized fixed
Automatic adaptation after value switching so that the versatility of device is stronger.
(3) relaying configuration switching flexibly and with pair when synchronous and control function be completely independent：The functional realiey and liter of protection
Level more facilitates.
Brief description of the drawings
Fig. 1 is intelligent distribution network failure detector structured flowchart of the present invention；
Fig. 2 is constructing communication network figure；
Fig. 3 is the logic diagram of PTN and wireless synchronism switching.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings.
The present invention provides the intelligent distribution network failure detector based on Packet Transport Network and wireless network, as shown in figure 1, bag
Include management module, acquisition module, differential protection module, observing and controlling control module and information exchange with pair when terminal.Protection with pair when
Synchronization and control function are realized by the differential protection module and measurement control module of intelligent distributed protection terminal respectively.
Management module, acquisition module, differential protection module, measurement control module and information exchange with pair when terminal it is all logical
Internal bus is crossed to be attached.
Acquisition module is measured corresponding to this intelligent distribution network failure detector by the secondary access of actual electrical quantity
The voltage x current information of side circuit and the division information of switch, and management module is transferred to by internal bus, by management mould
Block is distributed to differential protection module and measurement control module.
Measurement control module by information exchange with pair when terminal complete and adjacent intelligent distribution network failure detector
Data interaction and time adjustment function；It is described measurement control module include information acquisition unit, control unit and pair when unit, wherein controlling
Unit control information acquiring unit processed, pair when the interaction of unit use information with pair when terminal realize and adjacent intelligent distribution network failure
Detection means carries out data interaction and time adjustment function.
Information exchange with pair when terminal support wireless network TD-LTE communication and support fiber groupings transmission net PTN communication work(
Energy.
Information acquisition unit can be set three kinds of information interaction approach by the measurement control module：
Wherein, the interactive mode 1 represents that intelligent distribution network failure detector only receives fiber groupings transmission net PTN and enters
Row information is interacted, and now data and synchronizing signal are obtained from PTN；The interactive mode 2 represents intelligent distribution network fault detect
Device only receives wireless network TD-LTE carries out information exchange, and now data and synchronizing signal are obtained from wireless terminal accessing device
Take；The interactive mode 3 represents that intelligent distribution network failure detector carries out information exchange by PTN, TD-LTE mixed networking,
It is higher than TD-LTE now to set PTN priority.
Intelligent distribution network failure detector default information acquiring unit interactively 1 carries out information exchange, is receiving
Data and it is synchronous can not meet when requiring, automatically switch to interactive mode 2 and run；Will if data and synchronization still can not meet
Ask, then it is assumed that data channel exception, report and alarm；If current intelligent distribution network failure detector and adjacent intelligent distribution network
Failure detector existing interactively 1, has interactively 2 in the case of carry out information exchange, then the intelligence is matched somebody with somebody again
Electric network fault detection means then switches to interactive mode 3 to run.
The unit time uses IRIG-B synchronous protocols at described pair, and with IEEE1588V2 alternately synchronous protocols, leads to
Cross information exchange with pair when terminal using 2pin RS422 twisted-pair feeder synchronous transfer media, realize optical fiber PTN communications, wireless TD-
IEEE1588V2, IRIG-B time adjustment function provided respectively under LTE interactions, the time adjustment function are corresponding with the interactive mode, hand over
Mode when when mutual mode 1 and interactive mode 3 using optical fiber IEEE1588V2 pairs, interactive mode 2 is carried using wireless TD-LTE
For mode at IRIG-B pairs.
Voltage x current information and the division information of switch and measurement control that differential protection module is measured according to acquisition module
The data of the adjacent intelligent distribution network failure detector that molding block is received are poor according to differential relaying algorithm set in advance
Dynamic protection judges, including differential protection computing unit and definite value synchronism switching unit, realizes distributed differential protection function, and lead to
The mode of tripping operation regulation and control is crossed, is exported by measuring control module.
Wherein, the differential protection module includes differential protection computing unit and definite value synchronism switching unit；It is described differential
Protection computing unit carries out differential protection judgement according to differential relaying algorithm set in advance, and by way of regulation and control of tripping,
Exported by measuring control module, realize distributed differential protection function；Changed when with net topology, differential protection module
Definite value synchronism switching unit coordinates by with measurement control module, receives the topological arrangement information sent of measurement control module and fixed
Value, the corresponding relaying configuration of on-line synchronous change operation and definite value parameter, are carried out with other intelligent distribution network failure detectors
It is synchronous, according to topological arrangement information, perform bus differential protecting and line differential protection；Two adjacent intelligent distribution network failures
Realize that the SV message interactions data of IEC61850 9-2 forms carry out Line Differential guarantor by measuring control module between detection means
Shield judges.
In the specific embodiment of the application, the differential protection module and measurement control module are DSP
ADSP21469 chips, differential protection module is used to receive the distributed differential protection logic function of SV, goose data execution, with pipe
Reason module interaction CAN network datas, internal Ethernet data；
Measurement control module include information acquisition unit, control unit and pair when unit, realize time adjustment function with adjacent dress
Interactive SV data and goose data are put, the ini file that internal bus is brought by inner stipulation is based on management module is received
Interactive maintenance information is realized, with differential protection module by the internal two-way port mouthfuls of interaction data of 50M.Described device is using master
From clock scheme, coding transmission is carried out to the time, using the symmetry and Time delay measurement technology of network link, realize master-salve clock
Frequency, phase and absolute time synchronization.
Further, differential protection module carries differential relaying algorithm generally used now, only be increased in differential definite value
Definite value synchronism switching unit, changes when with net topology, and differential protection module coordinates what basis was received by with communication module
Topological arrangement information and definite value, the corresponding configuration of on-line synchronous change operation and definite value parameter, with other intelligent distribution network failures
Detection means is synchronized, and according to topological arrangement information, performs bus differential protecting and line differential protection module.Adjacent two
The SV message interaction numbers of IEC61850 9-2 forms are realized between platform intelligent distribution network failure detector by measuring control module
According to carrying out line differential protection judgement.
Further, it is described measurement control module information acquisition unit by with information exchange with pair when terminal it is wireless
Access terminal and intelligent acess terminal coordinates, and carry out corresponding constructing communication network as shown in Figure 2, realize supporting optical fiber respectively
PTN is communicated and is supported wireless TD-LTE, and possesses the function of synchronism switching, and switching mode is as follows：
The measurement control module of intelligent distribution network failure detector is set as three kinds of information interaction approach：Interactive mode
1st, interactive mode 2 and interactive mode 3.The interactive mode 1 represents that device only receives optical fiber PTN and carries out information exchange, now counts
Obtained from PTN according to synchronous；The interactive mode 2 represents that device only receives wireless TD-LTE and carries out information exchange, now counts
Obtained from CPE according to synchronous；The interactive mode 3 represent device can PTN, TD-LTE mixed networking carry out information exchange, this
When to set PTN priority be higher than TD-LTE.
Intelligent distribution network failure detector acquiescence interactively 1 carries out information exchange, in the data and synchronization that receive
Can not meet when requiring, automatically switch to interactive mode 2 and run；If data still can not meet requirement with synchronous, then it is assumed that number
According to channel abnormal, report and alarm；System interception data and synchronizing channel, according to priority and channel case, are automatically set to corresponding
Interactive mode work.
Further, pair module time synchronous protocol uses IRIG-B when, and IEEE1588V2 is optionally, synchronous
Transmission medium uses 2pin RS422 twisted-pair feeders.Realize that optical fiber PTN communications, wireless TD-LTE are provided respectively under interacting
IEEE1588V2, IRIG-B time adjustment function, the function are corresponding with the interactive mode, are used when interactive mode 1 and interactive mode 3
Mode during optical fiber IEEE1588V2 pairs, interactive mode 2 is to be provided which mode at IRIG-B pairs using wireless TD-LTE.
Further, management module is responsible for coordinated management module and measurement control module data exchange, coordinates distribution main website
Data Format Transform between management module.And the renewal of various events differential protection running status when occurring.Management mould
Block is interacted with measurement control module by internal bus, and traffic rate is 200Kbps.Following basic function is provided as shown in Figure 3：
A) the conventional definite value of operational measure control module, open into, output, the data such as analog quantity, record ripple.
B) measurement control module software version is had access to.
C) throwing is moved back differential protection module differential protection function and (rather than single differential function, is mainly used in topological structure and moves
Latch-up protection when state updates, prevents false protection).
D) handover network communication mode function (being mainly used in PTN and wireless double nets switching or active and standby net switching).
E) the * .ini file transmitting functions that measurement control module is used.
Further, acquisition module by the secondary access of actual electrical quantity measure the voltage x current information of side circuit with
The division information of switch, and management module is transferred to by internal bus, being distributed to differential protection module by management module is carried out
Differential protection judges, be distributed to measurement control module carry out with the data forwarding of other devices with interact.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of intelligent distribution network failure detector based on Packet Transport Network and wireless network, the intelligent distribution network failure inspection
Survey device include management module, acquisition module, differential protection module, measurement control module, information exchange with pair when terminal and interior
Portion's bus；It is characterized in that：
Management module, acquisition module, differential protection module, measurement control module and information exchange with pair when terminal all by interior
Portion's bus is attached.
Acquisition module measures the reality corresponding to this intelligent distribution network failure detector by the secondary access of actual electrical quantity
The voltage x current information of circuit and the division information of switch, and management module is transferred to by internal bus, by management module point
It is sent to differential protection module and measurement control module；
Measurement control module by information exchange with pair when terminal complete and adjacent intelligent distribution network failure detector data
Interaction and time adjustment function；
Voltage x current information and the division information of switch and measurement control mould that differential protection module is measured according to acquisition module
The data of the adjacent intelligent distribution network failure detector that block is received carry out differential guarantor according to differential relaying algorithm set in advance
Shield judges, including differential protection computing unit and definite value synchronism switching unit, realizes distributed differential protection function, and by jumping
The mode of lock regulation and control, is exported by measuring control module.
2. the intelligent distribution network failure detector based on Packet Transport Network and wireless network according to claim 1, it is special
Levy and be：
It is described measurement control module include information acquisition unit, control unit and pair when unit, wherein control unit control information
Acquiring unit, pair when the interaction of unit use information with pair when terminal realize enter line number with adjacent intelligent distribution network failure detector
According to interaction and time adjustment function；
Information exchange with pair when terminal support wireless network TD-LTE communication and support fiber groupings transmission net PTN communication functions.
3. the intelligent distribution network failure detector based on Packet Transport Network and wireless network according to claim 2, it is special
Levy and be：
Information acquisition unit can be set three kinds of information interaction approach by the measurement control module：
Wherein, the interactive mode 1 represents that intelligent distribution network failure detector only receives fiber groupings transmission net PTN and carries out letter
Breath interaction, now data and synchronizing signal are obtained from PTN；The interactive mode 2 represents intelligent distribution network failure detector
Only receiving wireless network TD-LTE carries out information exchange, and now data and synchronizing signal are obtained from wireless terminal accessing device；Institute
State interactive mode 3 and represent that intelligent distribution network failure detector carries out information exchange by PTN, TD-LTE mixed networking, now
It is higher than TD-LTE to set PTN priority.
4. the intelligent distribution network failure detector based on Packet Transport Network and wireless network according to claim 3, it is special
Levy and be：
Intelligent distribution network failure detector default information acquiring unit interactively 1 carries out information exchange, in the number for receiving
According to it is synchronous can not meet require when, automatically switch to interactive mode 2 and run；If data still can not meet requirement with synchronous,
Then think data channel exception, report and alarm；If current intelligent distribution network failure detector and adjacent intelligent distribution network event
Barrier detection means existing interactively 1, has interactively 2 in the case of carry out information exchange, then the intelligent power distribution again
Net failure detector then switches to interactive mode 3 to run.
5. the intelligent distribution network failure detector based on Packet Transport Network and wireless network according to claim 4, it is special
Levy and be：
The unit time uses IRIG-B synchronous protocols at described pair, and with IEEE1588V2 alternately synchronous protocols, by letter
Breath interaction with pair when terminal use 2pin RS422 twisted-pair feeder synchronous transfer media, realize optical fiber PTN communication, wireless TD-LTE hand over
IEEE1588V2, IRIG-B time adjustment function provided respectively under mutually, the time adjustment function are corresponding with the interactive mode, interactive mode
1 and during interactive mode 3 using optical fiber IEEE1588V2 pairs when mode, interactive mode 2 is to be provided which IRIG- using wireless TD-LTE
Mode at B pairs.
6. the intelligent distribution network failure detector based on Packet Transport Network and wireless network according to claim 1, it is special
Levy and be：
The differential protection module includes differential protection computing unit and definite value synchronism switching unit；The differential protection calculates single
Unit carries out differential protection judgement according to differential relaying algorithm set in advance, and by way of regulation and control of tripping, is controlled by measuring
Molding block is exported, and realizes distributed differential protection function；
Changed when with net topology, the definite value synchronism switching unit of differential protection module coordinates by with measurement control module,
Receive topological arrangement information and definite value that measurement control module is sent, the corresponding relaying configuration of on-line synchronous change operation and definite value
Parameter, synchronizes with other intelligent distribution network failure detectors, according to topological arrangement information, perform bus differential protecting and
Line differential protection；Between two adjacent intelligent distribution network failure detectors IEC61850 is realized by measuring control module
The SV message interactions data of 9-2 forms carry out line differential protection judgement.
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| CN111478295A (en) * | 2020-04-01 | 2020-07-31 | 南京国电南自电网自动化有限公司 | Data synchronization method and system suitable for wireless line differential protection |
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| Publication number | Publication date |
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| CN106911416B (en) | 2018-08-31 |
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