CN205883310U - Auto -change over device communicates between direct current station - Google Patents
Auto -change over device communicates between direct current station Download PDFInfo
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- CN205883310U CN205883310U CN201620795226.XU CN201620795226U CN205883310U CN 205883310 U CN205883310 U CN 205883310U CN 201620795226 U CN201620795226 U CN 201620795226U CN 205883310 U CN205883310 U CN 205883310U
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- communication
- direct current
- handover module
- control system
- switching device
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Abstract
The utility model discloses an auto -change over device communicates between direct current station, switch the module including one or more communication, communication switching module is connected between direct current control system and communication transmission equipment, the information of needs exchange between direct current control system will show on duty or reserve running state ACTIVE sign and stand for net very much the message and issue communication switching module, the ACTIVE sign of module in according to of the receiving message is switched in communication, selects to send the equipment for communication transmission with system on duty message, gives other current conversion stations through electric power communication transmission net. This kind of device can improve the communication speed, reduces the transmission delay, simplifies communication design between the station, supports network deployment communication between a plurality of stations, satisfies malaysian technology development corporation interconnection, coordinated control demand.
Description
Technical field
This utility model belongs to direct current transportation field, particularly to a kind of direct current interior communication switching device.
Background technology
In DC transmission system, current conversion station is operated in rectification, two kinds of methods of operation of inversion respectively, undertakes rectification, inversion
Controlling to need real-time exchange information between the DC control system of function, coordinate to control, this just requires can lead between current conversion station
Letter.Due to current conversion station physical location relatively far apart, usual interior communication is to be realized by electric power communication transmission network.In terms of redundancy
Considering, direct current transportation typically has two sets to similarly configure and the control system of independent operating, a set of is in state on duty, another set of place
In resting state.For reducing interior communication number of channels, reducing construction investment, it is only necessary to by the information of control system on duty for both sides
Swap, therefore to be forwarded the information of duty system by a communication switching device.At present in Practical Project, direct current control
System processed generally exports the HDLC signal of telecommunication to communication switching device, then is interfaced to SDH by communication handover module by G.703 (E1)
Transmission network, it is achieved that point-to-point communication between standing.This mode is suitable for both-end direct current, but for multiterminal element, if still used
Above-mentioned point-to-point communication mode, it is desirable to DC control system interior communication interface is many, it is many to take SDH passage, communication is overall reliable
Property reduce, extension inconvenience.Current Multi-end flexible direct current transmission becomes new focus, needs to study between a kind of new direct current station logical
Letter and communication switching device.
Utility model content
The purpose of this utility model, is to provide a kind of direct current interior communication switching device, and it can improve communication speed, subtract
Few transmission delay, simplifies the design of interior communication system, supports group-net communication between multiple station, meets multiterminal element interconnection, coordinates control
Demand processed.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of direct current interior communication switching device, including one or more communication handover modules, communication handover module connects
Between DC control system and telecommunication transmission equipment；DC control system would indicate that on duty or standby running status ACTIVE
Need the information of exchange between mark and station, issue communication handover module with ether network packet；Communication handover module is according to being received
ACTIVE mark in message, selects duty system message is sent to telecommunication transmission equipment, gives through electric power communication transmission network
Other current conversion stations.
Above-mentioned DC control system connects communication handover module by Ethernet, and communication handover module is connected by Ethernet
Telecommunication transmission equipment.
Above-mentioned communication handover module is provided with two, and DC control system is provided with two, two DC control systems
Outfan is connected to the input of two communication handover modules.
Above-mentioned communication handover module uses FPGA.
Above-mentioned telecommunication transmission equipment uses point-to-point or networking ethernet communication mode.
After using such scheme, this utility model makes the design of direct current interior communication system become very succinct, reliable, uses
Ethernet communication transfer rate can reach 100Mbps or 1Gbps, and the 2Mbps comparing routine G.703 (E1) promotes huge, shortens
Communications time delay, additionally Ethernet supports virtual local area network technology (VLAN), multicasting technology, and multiple direct current stations can be by electricity
Power telecommunication transport network sets up the Ethernet of a wide scope, and the DC control system at these stations can realize group-net communication, many
The interconnection of end direct current, coordination control become very easy, adapt to wide-area communication development, compare traditional HDLC point-to-point logical
Letter has the biggest advantage.
Accompanying drawing explanation
Fig. 1 is integrated stand composition of the present utility model；
Fig. 2 is operating diagram of the present utility model.
Detailed description of the invention
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
As it is shown in figure 1, this utility model provides a kind of direct current interior communication switching device, including connecting DC control system
With the communication handover module of telecommunication transmission equipment, DC control system is by running status ACTIVE mark (on duty or standby) and station
Between need exchange information, issue communication handover module with ether network packet；Communication handover module is according in Ethernet message
ACTIVE indicates, selects the Ethernet message of duty system is sent to telecommunication transmission equipment, gives through electric power communication transmission network
Other current conversion stations.
Here, DC control system connects communication handover module by Ethernet, and communication handover module is by Ethernet even
Connect telecommunication transmission equipment.From the standpoint of redundancy, the rare two set DC control systems of each direct current best, operate on duty
(i.e. ACTIVE is TRUE) or standby (i.e. ACTIVE is FALSE) state, often set DC control system at least two independent
Interior communication port, each current conversion station at least two communication handover modules exchange information with other stations.Without logical between station
Letter switching device, at least to set up 4 interior communication passages between two, a direct current pole current conversion station.Use interior communication switches
Device, is transferred to offside by the message of duty system, only need to set up passage between 2 stations, it is possible to realize system redundancy with communicate superfluous
Remaining, for cost saving, reduce system complexity, to improve direct current transportation operational reliability significant.
In Practical Project configures, there are two set DC control systems a direct current pole, two interior communication handover modules, often
Set DC control system connects two interior communication handover modules respectively with two ports, and two interior communication handover modules divide
Do not connect telecommunication transmission equipment.By system redundancy and communication redundancy, promote straight-flow system reliability.
Here, DC control system operates in (i.e. ACTIVE is TRUE) on duty or resting state (i.e. ACTIVE is
FALSE), DC control system, by needing the information of exchange between station, forms Ethernet message frame by certain format, and at Ethernet
Writing on duty or resting state (i.e. ACTIVE mark) in message, this Ethernet message with ACTIVE mark is sent to
Communication handover module.
This ACTIVE indicates, can be defined on certain fixed position of Ethernet message, such as in APDU (application data sheet
Unit Application Protocol Data Unit) first character joint, it is on duty that this byte value 0x5A represents TRUE/, its
It is standby that his value represents FALSE/.
Here, as in figure 2 it is shown, in interior communication switching device, communication handover module receives from directly from different port
The Ethernet message of flow control system, obtains ACTIVE mark from Ethernet message, is forwarded by the message that ACTIVE is TRUE
To the port being connected with telecommunication transmission equipment, being the packet loss of FALSE by ACTIVE, such telecommunication transmission equipment can only turn
Send out the message of duty system to electric power communication transmission network.
For improve message forward real-time, communication handover module can use PLD FPGA process with
Too network packet, FPGA can be according to IEC 802.3 Ethernet protocol, the serial code of the ethernet frame of real time parsing P1, P2 port
Stream, extracts the ACTIVE mark on Ethernet message fixed position, then by a gating realized by FPGA logic cell
Device, is forwarded to P3 port by the Ethernet message that ACTIVE is TRUE.Comparing CPU software decoding to forward, FPGA hard decoder is real again
Time property is the highest, and the transmission link time delay of communication cutting apparatus can be less than 1 microsecond.
Each communication handover module ethernet communication mouth connects telecommunication transmission equipment.Owing to SDH is operated in physical layer, with
Too net is operated in link layer, and SDH is transparent transmission pipeline for Ethernet.By to the telecommunication transmission equipment in current conversion station
Configure, passage between different SDH node can be set up, it is achieved point-to-point or networking ethernet communication between Converter Station.Right
In conventional both-end direct current, ad hoc mode can be used.For multiterminal element, group-net communication mode can be used, reduce communication system
Complexity.
Above example only illustrates technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, every according to the technological thought that the utility model proposes, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (5)
1. a direct current interior communication switching device, it is characterised in that: include one or more communication handover module, communication switching
Module is connected between DC control system and telecommunication transmission equipment；DC control system would indicate that on duty or standby operation shape
Need the information of exchange between state ACTIVE mark and station, issue communication handover module with ether network packet；Communication handover module root
Indicate according to the ACTIVE in received message, select duty system message is sent to telecommunication transmission equipment, pass through power communication
Other current conversion stations given by defeated net.
2. a kind of direct current interior communication switching device as claimed in claim 1, it is characterised in that: described DC control system leads to
Crossing Ethernet and connect communication handover module, communication handover module connects telecommunication transmission equipment by Ethernet.
3. a kind of direct current interior communication switching device as claimed in claim 1, it is characterised in that: described communication handover module sets
Being equipped with two, DC control system is provided with two, and the outfan of two DC control systems is connected to two communication switchings
The input of module.
4. a kind of direct current interior communication switching device as claimed in claim 1, it is characterised in that: described communication handover module is adopted
Use FPGA.
5. a kind of direct current interior communication switching device as claimed in claim 1, it is characterised in that: described telecommunication transmission equipment is adopted
By point-to-point or networking ethernet communication mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795226.XU CN205883310U (en) | 2016-07-26 | 2016-07-26 | Auto -change over device communicates between direct current station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795226.XU CN205883310U (en) | 2016-07-26 | 2016-07-26 | Auto -change over device communicates between direct current station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205883310U true CN205883310U (en) | 2017-01-11 |
Family
ID=57699638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620795226.XU Expired - Fee Related CN205883310U (en) | 2016-07-26 | 2016-07-26 | Auto -change over device communicates between direct current station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205883310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018036264A1 (en) * | 2016-08-23 | 2018-03-01 | 南京南瑞继保电气有限公司 | Direct-current inter-station communication switching method |
| CN108429279A (en) * | 2018-05-18 | 2018-08-21 | 南方电网科学研究院有限责任公司 | A kind of flexible direct current power transmission system without stream guard method and system |
-
2016
- 2016-07-26 CN CN201620795226.XU patent/CN205883310U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018036264A1 (en) * | 2016-08-23 | 2018-03-01 | 南京南瑞继保电气有限公司 | Direct-current inter-station communication switching method |
| CN108429279A (en) * | 2018-05-18 | 2018-08-21 | 南方电网科学研究院有限责任公司 | A kind of flexible direct current power transmission system without stream guard method and system |
| CN108429279B (en) * | 2018-05-18 | 2021-01-19 | 南方电网科学研究院有限责任公司 | Current-free protection method and system for flexible direct current transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 |