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 PDF

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Publication number
CN105933141B
CN105933141B CN201610218525.1A CN201610218525A CN105933141B CN 105933141 B CN105933141 B CN 105933141B CN 201610218525 A CN201610218525 A CN 201610218525A CN 105933141 B CN105933141 B CN 105933141B
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China
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station
net
host
network
communication
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CN105933141A (en
Inventor
胡兆庆
董云龙
卢宇
李海英
曹冬明
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NR Electric Co Ltd
NR Engineering Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance or administration or management of packet switching networks
    • H04L41/06Arrangements for maintenance or administration or management of packet switching networks involving management of faults or events or alarms
    • H04L41/0654Network fault recovery
    • H04L41/0659Network fault recovery by isolating the faulty entity
    • H04L41/0663Network fault recovery by isolating the faulty entity involving offline failover planning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing packet switching networks
    • H04L43/10Arrangements for monitoring or testing packet switching networks using active monitoring, e.g. heartbeat protocols, polling, ping, trace-route
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/70Admission control or resource allocation
    • H04L47/72Reservation actions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch 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

The network-building method communicated between standing under mixing multiterminal element topology
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.
CN201610218525.1A 2016-04-08 2016-04-08 The network-building method communicated between standing under mixing multiterminal element topology Active CN105933141B (en)

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CN111900756A (en) * 2020-06-09 2020-11-06 许继集团有限公司 Inter-station communication method for three-terminal direct-current power transmission system
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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