CN103760880B - Field bus network segment optimization method and optimization structure of DCS - Google Patents
Field bus network segment optimization method and optimization structure of DCS Download PDFInfo
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- CN103760880B CN103760880B CN201410056635.3A CN201410056635A CN103760880B CN 103760880 B CN103760880 B CN 103760880B CN 201410056635 A CN201410056635 A CN 201410056635A CN 103760880 B CN103760880 B CN 103760880B
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Abstract
The invention discloses a field bus network segment optimization method and optimization structure of a DCS. The method and structure are suitable for network control of a power plant circulating water system or automatic systems in terms of the manufacturing industry, the process industry, transportation, buildings, electric power and the like. The method is characterized in that in a field bus of the DCS, one network segment is used as a main network segment which is converted into a single network through a network segment conversion device PBLink, one or more network segments besides the main network segment can serve as main network segment devices to be connected to the main network segment through the network segment conversion device PBLink, a communication access via which a field bus port card of a DPU is connected with the main network segment devices and one or more network segment devices besides the main network segment through an optical fiber connection module and the network segment conversion device PBLink is formed, and accordingly the network segment structure is simplified and cost is lowered. The invention further discloses the optimization structure of the optimization method. The equipment and cables are saved, control system engineering construction cost is greatly reduced, and meanwhile reliability of the network segments of the field bus is guaranteed.
Description
Technical field
The present invention relates to a kind of fieldbus network segment optimization method of distributed monitoring control system and optimize structure it is adaptable to
The network of power plant cycle water system controls, or the Department of Automation of the aspect such as other manufacturing industry, process industry, traffic, building, electric power
System.Belong to technical field of power systems.
Background technology
At present, distributed monitoring control system fieldbus network segment layout structure, as shown in Fig. 2 this structure is by controlling DCS
The optical link module OLM1-1 of a pair of redundancy in the process control station DPU of system processed, by a pair of redundancy of PB card in OLM1-1
Interface conversion is optical fiber interface, after being applied on the spot, then is connect optical fiber by the optical link module OLM1-2 of a redundancy respectively
Mouth is converted to PD EBI 1-3, and the optical link module OLM of another redundancy is simultaneously connected by gateway Gateway after connecing
The segment 1-4 of PROFIBUS field bus PA.Therefore, this bus design structure will independently take the scene of a pair of DPU
Bus PROFIBUS Interface Card Interface, and two pairs of fibre link block OLM module will be increased, there is complex structure and engineering is made
The high defect of valency.When the network segment is laid, the construction costs of control system is high, and control performance, stability are poor.
Content of the invention
An object of the present invention, is to provide for a kind of fieldbus network segment optimization method of distributed monitoring control system,
Have the characteristics that low engineering cost and control performance are stable using the method.
The second object of the present invention, the fieldbus network segment being to provide for a kind of distributed monitoring control system optimizes structure,
Have the characteristics that structure is simple, low engineering cost and control performance are stable using this structure.
An object of the present invention can reach by following technical solution：
The fieldbus network segment optimization method of distributed monitoring control system it is characterised in that：In distributed monitoring control system
In fieldbus, using one of network segment as major network section, this major network section is converted into by list by network segment conversion equipment PBLink
Net, and the one or more network segments outside making major network section by network segment conversion equipment PBLink connect as the equipment in major network section
In major network section, the field-bus interface card of forming process control station DPU passes through optical link module, network segment conversion equipment
PBLink connects the communication channel of one or more network segment equipment outside major network section equipment and major network section, with simplify network segment structure and
Reduces cost.
An object of the present invention can also reach by following technical solution：
Further, described major network section can be the DP network segment, and the one or more network segments outside major network section can be PA net
Section.
The second object of the present invention can reach by following technical solution：
The fieldbus network segment of distributed monitoring control system optimizes structure, including process control station DPU and communication box on the spot,
It is characterized in that：The redundant interface of the DCS side fieldbus of process control station DPU be converted into after optical fiber interface with communication box on the spot
Optical fiber interface input connect, on the spot the optical fiber interface of communication box outfan connect network segment conversion equipment PBLink input
End, network segment conversion equipment PBLink has network segment transformational structure；One of outfan of network segment conversion equipment PBLink connects scene
The DP network segment of bus, the DP network segment is converted to single net；Two connection fieldbus of the outfan of network segment conversion equipment PBLink
The PA network segment, the PA network segment is converted into the network equipment；Make the PA network segment be used as the network equipment by network segment conversion equipment PBLink to connect
On the DP network segment, the redundant interface forming single DCS side fieldbus connects the fieldbus network segment optimization structure of multisegment.
The second object of the present invention can also reach by following technical solution：
Further, the described PA network segment can include gateway Gateway and PA distributor disk, network segment conversion equipment PBLink's
The two of outfan connect the input of PA distributor disk by gateway Gateway, and the outfan of PA distributor disk connects the net of the PA network segment
Network equipment.
Further, the network equipment of the PA network segment can include condenser A entrance cyclic hydrostatic pressure force detector, condenser A
Outlet cyclic hydrostatic pressure force detector, ball screen in/out mouth pressure detector, blowdown pump discharge main-piping pressure detector and condenser
Vacuum pressure detector, the network equipment of the DP network segment includes condenser A entrance recirculated water electrically operated gate, condenser A entrance recirculated water
Electrically operated gate, A side ball screen executor, A side-entrance valve, A side switching valve and A side outlet valve, constitute electric power plant circulating water decentralised control
The fieldbus network segment of system DCS optimizes structure.
Further, terminal resistance can be connected with the bus cable terminal of distributed monitoring control system.
Further, power module can be configured with bus PA at the scene.
Further, the optical fiber interface of the optical fiber interface of process control station DPU and communication box on the spot can respectively by optical fiber even
Connection module OLM is constituted.
The present invention has the beneficial effect projecting as follows：
1st, this major network section is turned by fieldbus network segment optimization method according to the present invention by network segment conversion equipment PBLink
Change single net into, and the one or more network segments outside making major network section by network segment conversion equipment PBLink are as setting in major network section
For being connected in major network section, the field-bus interface card of forming process control station DPU passes through optical link module, network segment conversion sets
Standby PBLink connects one or more network segment equipment outside major network section equipment and major network section, so that the network segment PA of fieldbus is not needed
Individually take main website interface, reduce from main website to optical cable on the spot and optical fiber OLM, save equipment and cable, substantially reduce control
System engineering cost processed, ensure that the reliability of the fieldbus network segment simultaneously.
2nd, the fieldbus network segment according to the present invention optimizes structure, the redundancy of the DCS side fieldbus of process control station DPU
Interface conversion is connected with the optical fiber interface input of communication box on the spot after becoming optical fiber interface, and the optical fiber interface of communication box is defeated on the spot
Go out the input that end connects network segment conversion equipment PBLink, network segment conversion equipment PBLink has network segment transformational structure；The network segment turns
One of outfan of exchange device PBLink connects the DP network segment of fieldbus, and the DP network segment is converted to single net；Network segment conversion equipment
The PA network segment of two connection fieldbus of the outfan of PBLink, the PA network segment is converted into the network equipment；Set by network segment conversion
Standby PBLink makes the PA network segment be connected on the DP network segment as the network equipment, forms the redundant interface of single DCS side fieldbus even
The fieldbus network segment connecing multisegment optimizes structure, it is possible to reduce the occupancy of DCS side PB card interface, it is possible to reduce optic fiber converter
Use, and reduce the use of optical cable.Through applying the circulation in thermal power plant, the PA network segment that monoblock is related to is big
About 90, after the present invention, each network segment can save about 20,000 yuan, and single unit amounts to and can save 1,800,000 yuan.
Brief description
Fig. 1 is the structural principle block diagram of one embodiment of the invention.
Fig. 2 is the structural principle block diagram of prior art.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Specific embodiment 1：
With reference to Fig. 1, the fieldbus network segment of the distributed monitoring control system that the present embodiment is related to optimizes structure, including process
Control station DPU1 and on the spot communication box, the redundant interface of the DCS side fieldbus of process control station DPU1 is converted into optical fiber interface
It is connected with the optical fiber interface input of communication box on the spot afterwards, the outfan of the optical fiber interface of communication box connects network segment conversion and sets on the spot
The input of standby PBLink5, network segment conversion equipment PBLink5 has network segment transformational structure；Network segment conversion equipment PBLink's is defeated
Go out the DP network segment 2 that one of end connects fieldbus, the DP network segment 2 is converted to single net；The outfan of network segment conversion equipment PBLink5
Two connection fieldbus the PA network segment 3, the PA network segment 3 is converted into the network equipment；PA is made by network segment conversion equipment PBLink5
The network segment 3 is connected on the DP network segment 2 as the network equipment, and the redundant interface forming single DCS side fieldbus connects multisegment
The fieldbus network segment optimizes structure.
The fieldbus network segment optimization method of the distributed monitoring control system that the present embodiment is related to, in distributed monitoring control system
Fieldbus in, using one of network segment as major network section, by network segment conversion equipment PBLink, this major network section is converted into
Single net, and the one or more network segments outside making major network section by network segment conversion equipment PBLink are as the equipment in major network section even
It is connected in major network section, the field-bus interface card of forming process control station DPU passes through optical link module, network segment conversion equipment
PBLink connects the communication channel of one or more network segment equipment outside major network section equipment and major network section, with simplify network segment structure and
Reduces cost.Described major network section is the DP network segment, and the one or more network segments outside major network section are the PA network segment.
In the present embodiment：
The described PA network segment 3 includes gateway Gateway6 and PA distributor disk 8, the outfan of network segment conversion equipment PBLink5 it
Two connect the input of PA distributor disk 8 by gateway Gateway6, and the network of the outfan connection PA network segment 3 of PA distributor disk 8 sets
Standby.
The network equipment of the PA network segment 3 includes condenser A entrance cyclic hydrostatic pressure force detector, condenser A outlet cyclic hydrostatic pressure
Force detector, ball screen in/out mouth pressure detector, blowdown pump discharge main-piping pressure detector and Condenser Vacuum Pressure detection
Device, the network equipment of the DP network segment 2 includes condenser A entrance recirculated water electrically operated gate, condenser A entrance recirculated water electrically operated gate, A side receipts
Net executor, A side-entrance valve, A side switching valve and A side outlet valve, constitute the scene of electric power plant circulating water distributed monitoring control system
Segment optimizes structure.
Terminal resistance 9 is connected with the bus cable terminal of distributed monitoring control system.At the scene on the bus PA network segment 3
It is configured with power module 7.The optical fiber interface of the optical fiber interface of process control station DPU1 and on the spot communication box is respectively by optical fiber connection mode
Block OLM4 is constituted.
Gateway Gateway6, PA distributor disk 8, network segment conversion equipment PBLink5, power module 7 and optical link module
OLM4, can adopt gateway, PA distributor disk, network segment conversion equipment, supply unit and the joints of optical fibre of routine techniquess.
During practical application, by being connected to recirculated water condenser electrically operated gate, the ball screen execution of the PA network segment 3 of fieldbus
The sensor of device, inlet/outlet valve and each assembly of switching valve, detection condenser electrically operated gate, ball screen executor, entry/exit water valve
The work of door and each assembly of switching valve uses parameter, and its parameter is sent to the process control station DPU1 of DCS control system, passes through
The process control station DPU1 of DCS control system chooses whether by the fieldbus DP network segment 2 to condenser electrically operated gate, receipts after calculating
Net executor, inlet/outlet valve and each assembly of switching valve send instruction and are operated.Specifically：Follow when sensor detects
The use parameter of ring water system, transfers information to DCS control system using parameter by the PA network segment 3 of fieldbus excessively program control
System station DPU11, calculates analysis after DCS control system process control station DPU1 receive information, chooses whether by fieldbus DP
The network segment 2 sends work order to each assembly control end of system, such as：
1st, DCS control system was judged according to different seasons and operating mode, calculated the aperture of valve, then DCS control
System processed will send control instruction by the fieldbus DP network segment 2 to condenser recirculated water electrically operated gate, control condenser recirculated water
The on an off of electrically operated gate；
2nd, the calculating of DCS control system analyzes condenser needs to carry out rubber ball cleaning, and DCS control system will be total by scene
The line DP network segment 2 sends instruction to the executor such as ball screen and ball collector, completes condenser ball cleaning；
3rd, in the same manner, when DCS control system detect condenser vacuum low when, alarm signal will be sent from control system,
Operator are reminded to be processed.
The technical characterstic of the present invention is：The PA network segment 3 of described fieldbus passes through gateway and PBlink conversion equipment connects
It is connected to the on site redundant bus DP network segment 2, then DCS control system is connected to by the on site redundant bus DP network segment 2, saved program control
The PB bayonet socket of system station DPU1 and corresponding optical cable.
Specific embodiment 2：
The fieldbus network segment of the distributed monitoring control system that the present embodiment is related to optimizes structure, and its structure is characterized in：Institute
The PA network segment 3 of the fieldbus stated utilizes conversion equipment PB-Link5 and gateway 6 by multiple nodes of the fieldbus DP network segment 2
It is extended, realize the PA network segment 3 output control port that same output optical fibre is converted to multiple fieldbus, realize same losing
It is in tree topology that fibre is converted to multiple data signal output control ports.
Remaining is with embodiment 1.
The present invention applies through power plant of Guangdong Province, brings following benefit and effect：
1st, reduce control systems engineering (CSE) cost, including：
1) the PA network segment does not need individually to take main website interface, saves equipment；2) save from main website to optical cable on the spot
Two pairs of OLM modules；3) save from main website to optical cable on the spot；4) the PA network segment that monoblock is related to about 90, adopts
After this technology, each network segment can save about 20,000 yuan, and single unit amounts to and can save 1,800,000 yuan.
2) ensure that the reliability of the fieldbus network segment, in the prosperous greatly Cogeneration Project of Zhaoqing Guangdong, circulation
Carry out the design of segment using the technical program.Through live operation examination on site, respond well.In view of using this skill
Art, can ensure that the fieldbus network segment keeps redundancy it is ensured that the reliability of the network segment from electric room to part on the spot simultaneously
Property, its overall benefit is very considerable.
Claims (8)
1. distributed monitoring control system fieldbus network segment optimization method it is characterised in that：Showing in distributed monitoring control system
In field bus, using one of network segment as major network section, this major network section is converted into by single net by network segment conversion equipment PBLink,
And the one or more network segments outside making major network section by network segment conversion equipment PBLink are connected to as the equipment in major network section
In major network section, the field-bus interface card of forming process control station DPU passes through optical link module, network segment conversion equipment PBLink
The communication channel of one or more network segment equipment outside connection major network section equipment and major network section.
2. distributed monitoring control system according to claim 1 fieldbus network segment optimization method it is characterised in that：Institute
Stating major network section is the DP network segment, and the one or more network segments outside major network section are the PA network segment.
3. it is used for the fieldbus network segment of the fieldbus network segment optimization method of distributed monitoring control system as claimed in claim 1
Optimize structure, including process control station DPU (1) and on the spot communication box it is characterised in that：The DCS side of process control station DPU (1)
The redundant interface of fieldbus is connected with the optical fiber interface input of communication box on the spot after being converted into optical fiber interface, communication box on the spot
The outfan of optical fiber interface connect the input of network segment conversion equipment PBLink (5), network segment conversion equipment PBLink (5) has
Network segment transformational structure；One of outfan of network segment conversion equipment PBLink connects the DP network segment (2) of fieldbus, by the DP network segment
(2) be converted to single net；The PA network segment (3) of two connection fieldbus of the outfan of network segment conversion equipment PBLink (5), by PA net
Section (3) is converted into the network equipment；Make the PA network segment (3) be used as the network equipment by network segment conversion equipment PBLink (5) and be connected to DP
On the network segment (2), the redundant interface forming single DCS side fieldbus connects the fieldbus network segment optimization structure of multisegment.
4. the fieldbus network segment according to claim 3 optimize structure it is characterised in that：The described PA network segment (3) includes net
Close Gateway (6) and PA distributor disk (8), the two of the outfan of network segment conversion equipment PBLink (5) passes through gateway Gateway (6)
Connect the input of PA distributor disk (8), the outfan of PA distributor disk (8) connects the network equipment of the PA network segment (3).
5. the fieldbus network segment according to claim 4 optimize structure it is characterised in that：The network equipment of the PA network segment (3)
Export cyclic hydrostatic pressure force detector, ball screen in/out mouth pressure reduction including condenser A entrance cyclic hydrostatic pressure force detector, condenser A
Detector, blowdown pump discharge main-piping pressure detector and Condenser Vacuum Pressure detector, the network equipment of the DP network segment (2) includes
Condenser A entrance recirculated water electrically operated gate, condenser A outlet recirculated water electrically operated gate, A side ball screen executor, A side-entrance valve, A side
Switching valve and A side outlet valve, the fieldbus network segment constituting electric power plant circulating water distributed monitoring control system optimizes structure.
6. the fieldbus network segment according to claim 4 optimize structure it is characterised in that：In distributed monitoring control system
Terminal resistance (9) is connected with bus cable terminal.
7. the fieldbus network segment according to claim 4 optimize structure it is characterised in that：Join in bus PA (3) at the scene
It is equipped with power module (7).
8. the fieldbus network segment according to claim 4 to 7 any claim optimize structure it is characterised in that：Process
The optical fiber interface of the optical fiber interface of control station DPU (1) and on the spot communication box is respectively made up of optical link module OLM (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410056635.3A CN103760880B (en) | 2014-02-19 | 2014-02-19 | Field bus network segment optimization method and optimization structure of DCS |
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| CN201410056635.3A CN103760880B (en) | 2014-02-19 | 2014-02-19 | Field bus network segment optimization method and optimization structure of DCS |
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| Publication Number | Publication Date |
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| CN103760880A CN103760880A (en) | 2014-04-30 |
| CN103760880B true CN103760880B (en) | 2017-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4054509B2 (en) * | 2000-04-19 | 2008-02-27 | 株式会社東芝 | Field device control system and computer-readable storage medium |
| DE102007028647B4 (en) * | 2007-06-21 | 2016-06-16 | Abb Technology Ag | System for wiring the automation and control technology of a technical system |
| CN202025228U (en) * | 2011-04-20 | 2011-11-02 | 中电投远达环保工程有限公司 | FCS (fieldbus control system) of desulphurization unit in thermal power plant |
| CN103529763B (en) * | 2013-03-26 | 2016-12-07 | 中国能源建设集团广东省电力设计研究院有限公司 | Factory Power Monitoring System |
| CN103326275A (en) * | 2013-07-08 | 2013-09-25 | 中国能源建设集团广东省电力设计研究院 | Method for design optimization of power plant cables based on equipment distributed arrangement |
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Address after: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Applicant after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Applicant before: Guangdong Electric Power Design Institute of CEEC |
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Free format text: CORRECT: APPLICANT; FROM: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE TO: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE CO., LTD. |
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