CN105933141B - The network-building method communicated between standing under mixing multiterminal element topology - Google Patents
The network-building method communicated between standing under mixing multiterminal element topology Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance or administration or management of packet switching networks
- H04L41/06—Arrangements for maintenance or administration or management of packet switching networks involving management of faults or events or alarms
- H04L41/0654—Network fault recovery
- H04L41/0659—Network fault recovery by isolating the faulty entity
- H04L41/0663—Network fault recovery by isolating the faulty entity involving offline failover planning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing packet switching networks
- H04L43/10—Arrangements for monitoring or testing packet switching networks using active monitoring, e.g. heartbeat protocols, polling, ping, trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic regulation in packet switching networks
- H04L47/70—Admission control or resource allocation
- H04L47/72—Reservation actions
-
- 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
- H04Q11/0005—Switch and router aspects
Abstract
The present invention relates to the network-building methods communicated between standing under a kind of mixing multiterminal element topology; and the communication monitoring mechanism that corresponding the method generates; this method will stand interior SDH/MSTP equipment as device talk between realizing station and interconnect Intermediate connection device; to use Ethernet LAN business; it is to stand interior control protective unit by the networking of 100 m ethernet access switch using connection type, SDH network is then accessed by SDH/MSTP equipment.Communication effect is that control command and running state information are exchanged between conventional current source converter station and voltage-source type converter station between the station, communication is using pair connection type of net mutual backup between standing, it forms and uses point-to-point interconnection between multiple stations of mixed DC topology, there is the interface channel to other stations from any one station, the interface channel uses optical-fibre channel mode, and optical cable follows buried cable or sea cable between each station to be laid with.
Description
Technical field
The invention belongs to direct current transportation fields, in particular to a kind of to mix the networking side communicated between station under multiterminal element topology
Method.
Background technique
Flexible DC transmission uses voltage source converter, can exchange system with separately adjustable active and idle transmission, raising
The ability to transmit electricity of system, is readily configured multi-terminal direct current transmission system, the electricity generation grid-connecting of renewable energy, isolated island urban electricity supply and
The application fields such as AC system interconnection, have apparent competitiveness.
Mix multiterminal element topology and optical cable with direct current cables be laid with signal as shown in Figure 1, by four station for, for
Communicated between the multistation of mixed DC, it is desirable that between any two station can high speed communication, and do not increase additional logical of substation
Interrogate equipment.
For both ends DC converter station topology in, frequently with a kind of mode be point-to- point communication, this mode be utilize
Communication channel switching device between standing inputs and covers input signals for control system is double, and output is the communication channel switching dress that missed the stop
The data for being selected as effective system are set, effective system refers to that the double sets of control system are currently at a set of of effective status, works as control
After the double set switchings of system, the effective system data transmission after the selection of communication channel switching device switches between standing, the choosing of valid data
It selects and is not realized in control protected host, it is possible to reduce the code of control protected host selection mitigates load on host computers, protects in control
In protecting system in this mode shown in connection schematic diagram See Figure 2.
Interior communication function is mainly realized by Communication Card and channel switching device in Fig. 2.It is main to complete DC control
It is communicated between the station of protection system with interpolar.Channel switching device has channel to switch board, to the interior communication from redundant system
Channel switches over.MUX is the attachment device of connection control protection equipment and optical fiber communication equipment in figure.
But this mode is suitable only for point-to- point communication between two stations, for communicating between the multistation of mixed DC, presses
It not only needs control protective unit side that muti-piece Communication Card is installed according to this mode, and needs more channel switching devices, especially
It forms AB net, and device and board quantity will multiply in 2, uneconomical and increase complexity of establishing network.Therefore herein for this
Kind drawback proposes a kind of network-building method for mixing and communicating between station under multiterminal element topology.
Summary of the invention
It is an object of the present invention to provide the network-building methods communicated between standing under a kind of mixing multiterminal element topology, simplify between standing
Communication modes economize on resources.
Two interchangers are set at each station, separately constitute A, B net.A, B network switch and pole control protection A set are controlled with pole
System protection B set uses cross-connection system, and A, B net use identical connection, controls protected host to any a set of pole, together
When receive A, B network data, but only with one of network data, as spare, interchanger does not have itself another network data
Valid data handover mechanism, directly forwarding receive data, and pole controls protected host and passes through high speed between optical communication board realization host
Fiber optic Ethernet communicates and monitoring, the selection of A, B network data are realized by host internal logic, setting principle are as follows:
All normally or all in the case where exception, A covers Systematic selection A network data for A net and B net, and B covers Systematic selection A network data
Or A net and B net are all under normal circumstances, A, B set system all select one of network data as valid data；
A net is normal, in the case where B net exception, selects A network data；
A net is abnormal, and B is netted in normal situation, selects B network data；
As designated lane, designated lane is laid with the above A net with DC line, B net be other channel time-sharing multiplexings or
Using communication channel between the station 2Mbit/s being syncopated as, two sets of hosts in activestandby state at each station monitor the receipts of itself
Channel, while the whether unobstructed signal of the communication for receiving channel is sent back into transmitting terminal.It is also mutually sent out between the host mutually communicated between standing
The heartbeat message signal for giving itself judges that the abnormal method of A, B net is: being sent by receiving other station hosts by A, B net
Data effective marker, fiber data verification error flag and heartbeat signal, as long as these three types of have an error to be considered as from this
Net receives data exception, another channel reception data is switched to, while the host is alarmed, only when host A B net is all examined
After measuring failure, it is just switched to backup host, continues to monitor A, B net state.During if mixed DC system operated normally, host
AB detects the AB net failure of itself, is selected as alarm or tripping.
The network-building method communicated between standing under the above mixing multiterminal element topology, the interior SDH/MSTP equipment that will stand is as real
Device talk interconnects Intermediate connection device between now standing, and is control in station using connection type to use Ethernet LAN business
Then protective device accesses SDH network by SDH/MSTP equipment by the networking of 100 m ethernet access switch.It is described above
MSTP (multi-service transport platform based on SDH) refers to, realizes connecing for the business such as TDM, ATM, Ethernet simultaneously based on SDH platform
Enter, handle and transmit, the multi-service node of united net management is provided, by accessing device talk bandwidth in equipment unified distribution station,
Communication bandwidth resource total in station is increased since mixing multistation direct current system is newly laid with optical cable with direct current cables, by above-mentioned MSTP
Fiber optic communications resource allocation will be newly laid with to use to Control protection system in standing.Protection does not use special communication passage, shares straight
Communication channel between flow control station.
The network-building method communicated between standing under mixing multiterminal element topology as described above, heartbeat signal is in control protected host
It is realized on host CPU plate.The judgement whether heartbeat message crashes as a host can be sent to opposite end by main inter-machine communication.
Receiving end by the effective marker phase of the receiving channel of the opposite end heartbeat message and this side that receive with, for differentiate with opposite side host
Communication channel it is whether unobstructed.Consider communication channel transmission delay, judges that heartbeat signal loses and add delay t, t value model in criterion
Enclose 1ms~1s.
The network-building method communicated between standing under mixing multiterminal element topology as described above, networking mode use the point-to-point side of multichannel
Formula, using the interchanger with optical communication interface and cable interface, 1 Dao n port of n converter station interchanger in each station
Be set separately be connected to station 1 arrive at a station n interchanger on, the interior corresponding interchanger port identical with station number in each station station does not connect, often
The pole control protection A set at a station is coupled with the optical communication interface end of the station interchanger with pole control protection B set.
Between standing under mixing multiterminal element topology as described above in the network-building method that communicates, previously according to communicating number between multistation
According to amount, communication channel delay requires to determine the bandwidth requirement needed, then carries out in station for the bandwidth that DC control and protection system is reserved
Comparison decides whether using reserved channel.If reserved channel is smaller using bandwidth chahnel than DC control protection, protected in control
100M interchanger outlet in side increases bandwidth conversion equipment.Or reduce communication data between DC control protection station.
After adopting the above scheme, the invention has the benefit that
The present invention provides a kind of network-building method for mixing and communicating between station under multiterminal element topology, in the mixing soft straight topology of multiterminal
In, in this manner when networking AB, control protective unit side installation muti-piece Communication Card is not needed, the channel Duo Tai is not needed yet
Switching device simplifies communication modes between station, economizes on resources.
Detailed description of the invention
Fig. 1 is mixed DC topology and optical cable with direct current cables laying schematic diagram；
Fig. 2 is point-to- point communication building mode between conventional two stations, according to point-to-point two station pole Control protection system of mode
Communication connection schematic diagram between standing；
Fig. 3 is communication network connection schematic diagram in mixed DC multistation station；
Fig. 4 is mixed DC multistation external communication network connection schematic diagram.
Specific embodiment
The network-building method that (Fig. 1) is communicated between standing under a kind of mixing multiterminal element is topological, as shown in figure 3, being arranged at each station
Two interchangers, separately constitute A, B net.A, B network switch and pole control protection A set with pole control protection B set use intersect company
Mode is connect, A, B net use identical connection, protected host is controlled to any a set of pole, while receiving A, B network data,
But only with one of network data, for another network data as spare, interchanger itself does not have valid data handover mechanism,
Directly forwarding receives data, and pole controls protected host and passes through high speed fibre ethernet communication and prison between optical communication board realization host
Depending on the selection of A, B network data is realized by host internal logic, setting principle are as follows:
All normally or all in the case where exception, A covers Systematic selection A network data for A net and B net, and B covers Systematic selection A network data
Or A net and B net are all under normal circumstances, A, B set system all select one of network data as valid data；
A net is normal, in the case where B net exception, selects A network data；
A net is abnormal, and B is netted in normal situation, selects B network data.
The above A net is designated lane, and designated lane is laid with DC line, and B net is other channel time-sharing multiplexings or makes
With communication channel between the station 2Mbit/s being syncopated as, two sets of hosts in activestandby state at each station monitor that the receipts of itself are logical
Road, while the whether unobstructed signal of the communication for receiving channel is sent back into transmitting terminal.It is also mutually sent between the host mutually communicated between standing
The heartbeat message signal of itself judges that the abnormal method of A, B net is: the number sent by receiving other station hosts by A, B net
According to effective marker, fiber data verification error flag and heartbeat signal, as long as these three types of have an error to be considered as from the net
Data exception is received, another channel reception data is switched to, while the host is alarmed, only when host A B net all detects
To after failure, it is just switched to backup host, continues to monitor A, B net state.During if mixed DC system operated normally, host A B
The AB net failure for all detecting itself, is selected as alarm or tripping.
The network-building method communicated between standing under the above mixing multiterminal element topology, as shown in figure 4, SDH/MSTP in standing
Equipment interconnects Intermediate connection device as device talk between realizing station, to use Ethernet LAN business, using connection type
It is that in standing then control protective unit accesses SDH net by SDH/MSTP equipment by the networking of 100 m ethernet access switch
Network.MSTP (multi-service transport platform based on SDH) described above refers to, realizes TDM, ATM, ether simultaneously based on SDH platform
Access, processing and the transmission of the business such as net, provide the multi-service node of united net management, are set by access in equipment unified distribution station
Standby communication bandwidth increases communication bandwidth money total in station since mixing multistation direct current system is newly laid with optical cable with direct current cables
Source will newly be laid with fiber optic communications resource allocation by above-mentioned MSTP and use to Control protection system in standing.Protection does not use dedicated logical
Channel is interrogated, communication channel between DC control station is shared.
The network-building method communicated between standing under mixing multiterminal element topology as described above, heartbeat signal is in control protected host
It is realized on host CPU plate.The judgement whether heartbeat message crashes as a host can be sent to opposite end by main inter-machine communication.
Receiving end by the effective marker phase of the receiving channel of the opposite end heartbeat message and this side that receive with, for differentiate with opposite side host
Communication channel it is whether unobstructed.Consider communication channel transmission delay, judges that heartbeat signal loses and add delay t, t value in criterion
Range 1ms~1s.
The network-building method communicated between standing under mixing multiterminal element topology as described above, networking mode use the point-to-point side of multichannel
Formula, using the interchanger with optical communication interface and cable interface, 1 Dao n port of n converter station interchanger in each station
Be set separately be connected to station 1 arrive at a station n interchanger on, the interior corresponding interchanger port identical with station number in each station station does not connect, often
The pole control protection A set at a station is coupled with the optical communication interface end of the station interchanger with pole control protection B set.
Between standing under mixing multiterminal element topology as described above in the network-building method that communicates, previously according to communicating number between multistation
According to amount, communication channel delay requires to determine the bandwidth requirement needed, then carries out in station for the bandwidth that DC control and protection system is reserved
Comparison decides whether using reserved channel.If reserved channel is smaller using bandwidth chahnel than DC control protection, protected in control
100M interchanger outlet in side increases bandwidth conversion equipment, and if the Ethernet of Fig. 2 dotted portion turns 2M device, another method is
It reduces DC control and protects communication data between station.It, can be with but if reserved channel is bigger using bandwidth chahnel than DC control protection
The Ethernet for removing dotted portion turns 2M device.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although those skilled in the art
After reading the application, various modifications or change are carried out referring to this present invention of above-described embodiment, but these modifications or change are in Shen
Please pending right application of the invention it is claimed within the scope of.
Claims (5)
1. the network-building method communicated between standing under mixing multiterminal element topology, it is characterised in that: at each station, two interchangers are set,
A, B net are separately constituted, A, B net use identical connection, and A, B network switch and pole control protection A set host, pole control are protected
It protects B set host and uses cross-connection system, protected host is controlled to any a set of pole, while receiving A, B network data, but only adopt
With one of network data, another network data is as spare, and interchanger forwarding receives data, and pole control protected host passes through
Optical communication board realizes high speed fibre ethernet communication and monitoring between control host, and the selection of A, B network data is by control host
The realization of portion's logic, setting principle are as follows:
All normally or all in the case where exception, A covers Systematic selection A network data for A net and B net, and B covers Systematic selection A network data
A net is normal, in the case where B net exception, selects A network data；
A net is abnormal, and B is netted in normal situation, selects B network data；
One in A, B net is set as designated lane, designated lane is laid with DC line, another is set as other channels
Time-sharing multiplex uses communication channel between the station being syncopated as, and two sets of hosts in activestandby state at each station monitor itself
Receipts channel, while by receive channel communication whether unobstructed signal sends back transmitting terminal；
The heartbeat message signal that itself is mutually sent between the host mutually communicated between standing judges that the abnormal method of A, B net is: passing through
It receives data effective marker, the fiber data that other station hosts are sent by A, B net and verifies error flag and heartbeat message letter
Number, as long as these three types of signals have an error to be considered as receiving data exception from the net, it is switched to another channel reception number
According to, while the host is alarmed；
After A, B net of host all detect failure, it is just switched to backup host, continues to monitor A, B net state；If mixing is straight
During streaming system operates normally, host A, B detect A, B the net failure of itself, are selected as alarm or tripping.
2. the network-building method communicated between standing under mixing multiterminal element topology as described in claim 1, which is characterized in that will be in station
SDH/MSTP equipment interconnects Intermediate connection device as device talk between realizing station；
The connection type of use is that in standing then control protective unit passes through SDH/MSTP by ethernet access switch networking
Equipment accesses SDH network；
The MSTP is multi-service transport platform based on SDH, in particular to based on SDH platform while realizing TDM, ATM, ether
Access, processing and the transmission of net, provide the multi-service node of united net management, by accessing device talk in equipment unified distribution station
Bandwidth, when mixing multistation direct current system, which is newly laid with optical cable with direct current cables, increases communication bandwidth resource total in station, by upper
Fiber optic communications resource allocation will be newly laid with to Control protection system use in standing by stating MSTP；
It protects process not use special communication passage, shares communication channel between DC control station.
3. the network-building method communicated between standing under mixing multiterminal element topology as described in claim 1, which is characterized in that the heart
Message signals are jumped to realize on the host CPU plate of control protected host；
The judgement whether heartbeat message signal crashes as a host is sent to opposite end by main inter-machine communication；It receiving end will
The effective marker phase of the receiving channel of the opposite end heartbeat message and this side that receive with, for differentiates with the communication of opposite side host lead to
Whether road is unobstructed；For communication channel transmission delay, judges that heartbeat signal loses and add the t that is delayed in criterion, t value range 1ms~
1s。
4. the network-building method communicated between standing under mixing multiterminal element topology as described in claim 1, which is characterized in that A, B net
Networking mode use the point-to-point mode of multichannel, using the exchange for having optical communication interface and cable interface in each station
Machine, 1 to n port of n converter station interchanger, which is set separately, to be connected on the interchanger that n is arrived at a station at station 1, corresponding friendship in each station station
Cable is not accessed in port identical with station number of changing planes, and pole control protection A set and the pole control protection B set at each station are coupled with this
It stands the optical communication interface end of interchanger.
5. in the network-building method communicated between standing under mixing multiterminal element topology as claimed in claim 2, which is characterized in that in advance
According to communication data amount between multistation, communication channel delay requires to determine the bandwidth requirement needed, then protects in station for DC control
The reserved bandwidth of system compares, and decides whether using reserved channel；If reserved channel uses logical than DC control protection
Road bandwidth is small, changes planes in control protection top-cross and communicates between outlet increase bandwidth conversion equipment, or reduction DC control protection station
Data.
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| CN112367118A (en) * | 2020-10-12 | 2021-02-12 | 岭东核电有限公司 | Information transmission method, device and system for nuclear power plant |
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