CN202306295U - Local control unit (LCU) using optical fiber double-loop network - Google Patents
Local control unit (LCU) using optical fiber double-loop network Download PDFInfo
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- CN202306295U CN202306295U CN2011204190384U CN201120419038U CN202306295U CN 202306295 U CN202306295 U CN 202306295U CN 2011204190384 U CN2011204190384 U CN 2011204190384U CN 201120419038 U CN201120419038 U CN 201120419038U CN 202306295 U CN202306295 U CN 202306295U
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- main switch
- host exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a local control unit (LCU) using an optical fiber double-loop network. The LCU comprises a programmable logic controller (PLC) remote extension input/output (I/O) module, a PLC host I, a PLC host II, a communication server, n LCU screens, a main switch I, a main switch II, an operator workstation and an engineer workstation, wherein two switches are arranged in each LCU screen; the LCU screens are sequentially connected through an optical cable; the operator workstation and the engineer workstation are respectively connected with the main switch I; the main switch I and the main switch II are respectively connected with the head and tail LCU screens through optical cables; the main switch I and the main switch II are connected through an optical cable; the PLC host I and the PLC host II are connected through an optical cable; and the PLC host I and the PLC host II are respectively connected with the PLC remote extension I/O module. The LCU can realize high-reliability and high-redundancy LCU control and high transmission rate.
Description
Technical field
The utility model relates to a kind of LCU terrain control system, a kind of application optical fiber dual ring net LCU terrain control system of saying so more specifically.
Background technology
Have the terrain control system of power station LCU at present now, generally comprise the Programmable Logic Controller PLC of little type, its CPU processing speed is slow, functional module is few, the system extension function is poor; In addition important control, guard signal are not considered redundant configuration; And when the program design of PLC, do not consider the active and standby switching problem of redundant input quantity; Custom adopts single supply, single CPU, single network structure, and when one or more the breaking down in these important module of PLC, the function of whole LCU goes wrong; Lose supervisory function bit, have a strong impact on the normal operation in power station controlling object; Pass through the single communication port (Ethernet) of fiber plant with Surveillance center's (comprising a terrain and a distant place), when passage goes wrong, Surveillance center can't carry out exchanges data with LCU.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides the optical fiber dual ring net LCU terrain control system of a kind of high reliability, highly redundant property LCU control, high transfer rate.
The technical scheme that the utility model solves above-mentioned technical matters is: comprise the long-range expansion I/O module of PLC, PLC main frame I, PLC main frame II, communication server, a n LCU screen, host exchange I, host exchange II, operator workstation and engineer work station; Be equipped with two switches in described each LCU screen; Connect successively through optical cable between each LCU screen; Operator workstation is connected with the host exchange I respectively with the engineer work station; The host exchange I is connected with initial and end LCU screen respectively through optical cable with the host exchange II; Connect through optical cable between host exchange I and the host exchange II; PLC main frame I, PLC main frame II and communication server respectively with 1#LCU screen in two switches is connected, through the optical cable connection, PLC main frame I is connected with the long-range expansion I/O module of PLC respectively with PLC main frame II between described PLC main frame I and the PLC main frame II.
Because adopt technique scheme, the beneficial effect of the utility model is: the redundancy feature that communication network is good makes the reliability of whole LCU terrain control system significantly improve; PLC adopts the high-end hot backup redundancy CPU of high reliability, makes that the CPU processing speed is fast, extendability is strong, communication function is powerful.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
As shown in Figure 1; A kind of application optical fiber dual ring net LCU terrain control system; Comprise the long-range expansion I/O module of PLC, PLC main frame I, PLC main frame II, communication server, a n LCU screen, host exchange I, host exchange II, operator workstation and engineer work station; Be equipped with two switches in described each LCU screen; Connect successively through optical cable between each LCU screen; Described operator workstation is connected with the host exchange I respectively with the engineer work station, connects through optical cable between host exchange I and the host exchange II, and switch in the about respectively 1#LCU screen of described host exchange I is connected with a switch during n#LCU shields; Another switch in the about respectively 1#LCU screen of host exchange II is connected with another switch in the n#LCU screen; Described PLC main frame I, PLC main frame II and communication server respectively with 1#LCU screen in two switches is connected, through the optical cable connection, PLC main frame I is connected with the long-range expansion I/O module of PLC respectively with PLC main frame II between described PLC main frame I and the PLC main frame II.
Each of the utility model formed module and all can be adopted existing module to realize, in this example, concrete module is selected as follows: host exchange I, host exchange II adopt EPA switch Sicom3016-2M-16T (DC220V, 2 100M light mouths); Switch in the LCU screen adopts the light oral sex Sicom3000-2M-6T (DC24V) that changes planes; PLC main frame I, PLC main frame II adopt U.S. GE RX3i series.
To change planes be the core ingredient of optical fiber dual ring net in the light oral sex in the utility model, forms looped networks through 2 pairs of light mouths.
Industry dual-ring network Ethernet switch is the terminal of optical fiber dual ring net, and the data delivery that it can collect communication server is responsible for the connection and the exchanges data of optical fiber dual ring net network service in looped network.
Communication server mainly is responsible for LCU supervising device controlling object and is removed and the communicating by letter and protocol conversion of other equipment of plc communication; Can carry out video data handles; And possess the high capacity memory function, can be in a large amount of historical data of LCU stored, and support USB flash disk, CF card storage medium stores data; Can provide fiber optic Ethernet interface, GPRS interface, wireless frequency expansion interface and remote monitoring center to carry out exchanges data in addition; Can accomplish the function of user as required through Internet visit LCU data.
PLC is the core control section of LCU terrain control system; It receives from outside and inner signal through switching value input, analog quantity input, the RTD module of PLC; Also receive signal through communication port and outside long distance control system and internal unit; After the routine processes in the power station through special exploitation; Isolate the back to external unit and internal unit through output control signals such as switching value output module, analog output modules through the outlet disconnecting relay, with controlling object such as control and protection water wheels units.Built-in high power capacity lithium battery among the said PLC can realize that power down keeps data, and the assurance data are not lost.In addition when one of them module of dual power supply module among the PLC breaks down, the overall operation of LCU is not produced any influence; When operation CPU module went wrong, the spare CPU module switched to running status immediately, thereby the assurance system continues operation; Above fault all will produce the alarm operations staff, and the module of redundant configuration can guarantee the non-stop-machine situation of genset in all modules of LCU on-line replacing in service, carries out fault and gets rid of.
Claims (1)
1. use optical fiber dual ring net LCU terrain control system for one kind; It is characterized in that: comprise the long-range expansion I/O module of PLC, PLC main frame I, PLC main frame II, communication server, a n LCU screen, host exchange I, host exchange II, operator workstation and engineer work station; Be equipped with two switches in described each LCU screen; Connect successively through optical cable between each LCU screen; Operator workstation is connected with the host exchange I respectively with the engineer work station; Host exchange I and host exchange II are connected with initial and end LCU screen respectively through optical cable, connect through optical cable between host exchange I and the host exchange II, and PLC main frame I, PLC main frame II and communication server are connected with two switches during 1#LCU shields respectively; Connect through optical cable between described PLC main frame I and the PLC main frame II, PLC main frame I is connected with the long-range expansion I/O module of PLC respectively with PLC main frame II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204190384U CN202306295U (en) | 2011-10-28 | 2011-10-28 | Local control unit (LCU) using optical fiber double-loop network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204190384U CN202306295U (en) | 2011-10-28 | 2011-10-28 | Local control unit (LCU) using optical fiber double-loop network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306295U true CN202306295U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204190384U Expired - Lifetime CN202306295U (en) | 2011-10-28 | 2011-10-28 | Local control unit (LCU) using optical fiber double-loop network |
Country Status (1)
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| CN (1) | CN202306295U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401748A (en) * | 2013-08-09 | 2013-11-20 | 南车资阳机车有限公司 | Shield machine hot standby control system and method |
| CN107315339A (en) * | 2017-03-23 | 2017-11-03 | 杨斌 | A kind of equipment monitoring system based on hardware redundancy |
| CN107491018A (en) * | 2017-08-04 | 2017-12-19 | 中国长江电力股份有限公司 | A kind of Hydropower Unit LCU control systems and control method |
| CN113973046A (en) * | 2021-09-06 | 2022-01-25 | 交控科技股份有限公司 | Wired safety data network and train-ground communication mobile block signal network for train operation station |
-
2011
- 2011-10-28 CN CN2011204190384U patent/CN202306295U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401748A (en) * | 2013-08-09 | 2013-11-20 | 南车资阳机车有限公司 | Shield machine hot standby control system and method |
| CN107315339A (en) * | 2017-03-23 | 2017-11-03 | 杨斌 | A kind of equipment monitoring system based on hardware redundancy |
| CN107491018A (en) * | 2017-08-04 | 2017-12-19 | 中国长江电力股份有限公司 | A kind of Hydropower Unit LCU control systems and control method |
| CN113973046A (en) * | 2021-09-06 | 2022-01-25 | 交控科技股份有限公司 | Wired safety data network and train-ground communication mobile block signal network for train operation station |
| CN113973046B (en) * | 2021-09-06 | 2024-05-03 | 交控科技股份有限公司 | Wired safety data network and train ground communication mobile blocking signal network for train operation station |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |