CN205581629U - Accuse net integration control system assists in thermal power plant - Google Patents
Accuse net integration control system assists in thermal power plant Download PDFInfo
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- CN205581629U CN205581629U CN201620212847.0U CN201620212847U CN205581629U CN 205581629 U CN205581629 U CN 205581629U CN 201620212847 U CN201620212847 U CN 201620212847U CN 205581629 U CN205581629 U CN 205581629U
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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 belongs to the technical field of automated control, concretely relates to accuse net integration control system assists in thermal power plant. This device each on the spot the PLC controller of system connect and to assist the accuse switch among the industrial ethernet, the DCS controller with assist the accuse switch and be connected and convey control command, the DCS controller adopts the DCS the same with the host computer, each substation and the connection of the annular optical network of each DCS controller adoption. The utility model provides the high security of unit, economic nature, reliability have solved that each control system dispersion of accuse net, the difficult management of operation personnel are assisted by present thermal power plant, the control network fault point is many, the fault rate is high, and control logic and control picture be unified, lack multiple information monitoring function, each system is not related, and degree of automation is low, assist the accuse net realizes the difficult scheduling problem of big centralized control with the host computer.
Description
Technical field
This utility model belongs to technical field of automatic control, is specifically related to thermal power plant's auxiliary control net integral control system, it is adaptable to new power plant construction auxiliary control net focus control mode, is more suitable for thermal power plant's central controlled transformation of auxiliary control net.
Background technology
Existing thermal power plant auxiliary control net generally also exists the dispersion of each control system, operations staff's not manageability, controls that network trouble point is many, fault rate is high, controls the problems such as logic and monitored picture disunity, each system automation degree are low.Such as Honghe Power Generation Co. Ltd. of Yunnan Datang International 2x300MW engineering Properties of CFB, each system of auxiliary control net uses Schneider Quantum
PLC controls, wherein coal handling system, precision processing system, along the river water intake system, pneumatic ash removal system, boiler feed water system use the hot-backup system of 140CPU43412A and hot standby block combiner to be controlled, and medicine system in oil-firing pump house system, hydrogen generating system, unboiled water Calx system, industrial wastewater system, stove, use 140CPU11303 control containing coal waste water system, hypochlorous acid system, sewage disposal system.This existing auxiliary control system there is problems in that
1. PLC programming software uses concept2.6, ipc monitor configuration software uses Intouch9.5, PLC programming software and ipc monitor configuration software are separate, and version is low, each operator station and server increase fault rate with the time limit and significantly increase, and need to upgrade hardware and software.
Though 2. each system of auxiliary control net is all included central station of floating dock in and is carried out Centralized Monitoring, but it is still provided with active station on the spot, great majority operation still completes at control room on the spot, and auxiliary control net is different from the control result of main frame DCS, its configuration mode, the operation screen of operations staff, operating side all also exist the biggest difference, operation and control mode there is also the biggest difference, this management just run to auxiliary control net, main frame big collection control brings difficulty, and the operation monitoring of same person main frame to be completed and auxiliary control net is the most extremely difficult.
The most each auxiliary shop is completed by different manufacturers, and PLC coding style and host computer configuration stylistic differences are very big, and the increase to systemic-function, the most loaded down with trivial details at present.PLC logic and host computer monitoring software all go out without tripping operation head, host computer is without information list, various warnings, historical trend are inquired about comparatively laborious, PLC controls logic and host computer configuration Shortcomings, carry out the equipment fault analysis of causes to attendant and bring difficulty, bring potential safety hazard to the stable operation of equipment.
Control room uses the most on the spot switch, optical-electrical converter add trouble point to system, although use double net parallel running, but when arbitrary network failure, host computer monitoring software can not the most but be changed so that equipment on the spot is lost monitoring.This trouble point can be eliminated after the transformation of the auxiliary control net model of integration, improve the reliability of system, it is achieved arbitrary network failure also can control equipment on the spot.
The control of the most each system is completed by respective PLC, and plc data can not realize sharing, and the control between system is just not in contact with, and controls relatively independent, and automaticity is low.Achieving data sharing after the transformation of the auxiliary control net model of integration, each system can mutually access data, provides platform for overall control the between system.
Utility model content
The purpose of this utility model be for the auxiliary control net each control system dispersion of existing thermal power plant, operations staff's not manageability, control network trouble point is many, fault rate is high, control logic and monitored picture disunity, lack much information control function, each system does not associates, automaticity is low, auxiliary control net realizes the problems such as big collection control difficulty with main frame, use auxiliary control net overall-in-one control schema pattern, the safety of unit, economy, reliability can be improve.
Solution of the present utility model is: the PLC of each remove function system connects the auxiliary control switch in EPA, DCS controller is connected with auxiliary control switch passs on control instruction, DCS controller uses the DCS identical with main frame, each substation and each DCS controller to use ring optical networks to connect.
The auxiliary control switch of described Ethernet uses hub-and-spoke configuration double-network redundant, and light net uses loop configuration redundancy, and DCS controller realizes double net switching undisturbed.
The communication module of the PLC of each remove function system of thermal power plant uses 100MbitMR type light mouth.
In this control system, connected by station switch between operator station, engineer station, history station.
DCS controller rate of load condensate is≤30%, is provided with 4 set hot standby DCS controller in whole system.
The electric dust removing system of thermal power plant uses OPC communication, realizes the connection with each operator station by DCS switch.
This control system make use of the most highly developed Modbus tcp/ip communication technology, OPC communication technology (may select available communication technology according to actually used product) and safe and reliable industrial Ethernet technology, have employed the mode of PLC+ EPA+DCS, achieve main frame, the unification of auxiliary control network control system, it is achieved that main frame, the big collection control of auxiliary control net run.After the transformation of auxiliary control net overall-in-one control schema, PLC no longer performs logical operations and judgement on the spot, PLC is only used as a data Interface Station, is responsible for the collection of data on the spot and passing on of auxiliary control net DCS controller DPU instruction, and the control function of each system of auxiliary control net is all completed by auxiliary control net DPU.Ethernet is double-network redundant configuration, communication media uses optical fiber, and in order to improve the reliability of network, the communication module of PLC uses 100MbitMR type light mouth, directly it is connected with central station of floating dock photoelectric integral type auxiliary control switch by optical fiber, decreases the signal of telecommunication and be converted to optical signal link.
This thermal power plant's auxiliary control net overall-in-one control schema pattern solves the dispersion of each control system, operations staff's not manageability, network trouble point is many, fault rate is high in control, control logic and monitored picture disunity, lack much information control function, each system does not associates, automaticity is low, auxiliary control net realizes the problems such as big collection control difficulty with main frame, take control model targetedly, extraordinary effect can be obtained, improve unit safety, economy, reliability.
Accompanying drawing explanation
Fig. 1 is auxiliary control net network structure sketch.
Fig. 2 is the Modbus initialization logic figure of oil-firing pump house system.
Fig. 3 be Modbus be double net parallel running logic charts.
Fig. 4 is DCS data selection logic figure.
In figure: ring optical networks 1, DCS controller 2, operator station 3, DCS switch 4, PLC 5, auxiliary control switch 6, optical fiber 7, history station 8, engineer station 9, auxiliary control net DCS10, electric dust removing system 11.
Detailed description of the invention
Below by embodiment and combine accompanying drawing, this utility model control program is further described in detail.
This project illustrates with the H5000M system of Beijing Hitachi Process Control System company.
1. auxiliary control net DCS equipment is installed, and network connects.
Auxiliary control net network structure sketch as shown in Figure 1, at central station of floating dock electric room, 4 set auxiliary control net DCS controllers 2 are installed, at central station of floating dock, 4 operator stations 3 are installed, at auxiliary control net engineer's cab installation engineer station 9, history station 8, the main frame of electric dust removing system 11 are installed at electric precipitation control room.To the DCS controller 2 of auxiliary control net, engineer station 9, history station 8, electric dust removing system 11, the PLC 5 of each subsystem carries out networking, comprise the Ethernet DCS switch 4 between DCS, ring optical networks 1, the star-like Ethernet auxiliary control switch 6 between DCS and PLC.
2. the Modbus of H5000M DCS and Quantum PLC realizes.
Have been provided with in PLC 5 on the spot after the transformation of this auxiliary control net DCS10 overall-in-one control schema controlling logic, PLC does not carry out data process, logic control, is only used as a data Interface Station, and what the DCS controller 2 of the collection and auxiliary control net DCS10 of being responsible for the most each device data instructed passs on.All logic control functions are all completed by auxiliary control net DCS controller 2DPU controller, and the communication between auxiliary control net DCS10 and PLC 5 is to pass through Modbus
TCP realizes.In order to meet the rate of load condensate of DCS controller 2, auxiliary control switch 6 rate of load condensate of EPA and light net 1 rate of load condensate of auxiliary control net DCS10, each DCS controller 2 is assigned with 4 auxiliary shop systems PLC, in DCS controller 2, each system of distribution is distinguished with PLC1, PLC2, PLC3, PLC4 respectively, the PLC 5 of control system can be increased as required, the control system PLC controller 5 increased can sequentially be arranged in order as PLC5, PLC6 ..., as long as increasing corresponding initialization logic at initialization logic page during increase.
Illustrating as a example by the oil-firing pump house system of PLC1 at this, Modbus initialization logic is as in figure 2 it is shown, the Modbus communication that MODBUS1_TRX_START is DPU Yu PLC starts logic.
Normal condition, Modbus is double net parallel runnings, as a example by the DI digital quantity of PLC1 inputs, as shown in Figure 3.Modbus1 passes through 192.168.4.*(auxiliary control industrial switch 1) to run, data field is the 1 of MB2；Modbus2 is run by 192.168.6.* (auxiliary control industrial switch 2), and data field is the 2 of MB3.
DCS data selection logic is as shown in Figure 4, the data that IN1, IN2 accept are same data source, state is identical, OUT output selects IN1 or IN2 by the communications status of PLC1, data field MB2, MB3 are real-time update, judge to achieve the switching undisturbed of network failure or communication delay by communication logic, solve the network failure of former auxiliary control net or problem that communication delay can not switch.
The configuration of the Modbus of H5000M DCS is according to the master slave relation of Modbus, and DUP is set to server, and DI, AI are a reading mode, it is only necessary to configuration transmits initial address and transmits length, it is not necessary to configuration read-write mode.DO, AO may select read-write mode and transmitting function number.
3. communication network topology structure.
Each system PLC5 of auxiliary control net have employed the star network topology of original system and connects, this structure easily realizes, it is easy to point spread, it is easy to safeguard, use 10/100/1000Mbit self adaptation photoelectric integral switch 6, network transfer speeds is fast, and individual node fault does not interferes with entirety, but center switch fault, whole network paralysis can be made, in order to improve the reliability of this Control System NetWork of auxiliary control net transmission, reduce the fault point, have employed dual star network structure parallel running.Simultaneously, achieve each system integration of auxiliary control net control and monitor, eliminate and control active station on the spot, characteristic according to communication module, it has 10/100Mbit electricity mouth and 100Mbit light mouth, auxiliary control net used 10/100Mbit electricity mouth to be converted to optical signal through optical-electrical converter more originally, this adds increased this trouble point of opto-electronic conversion, 100Mbit light mouth is directly used after auxiliary control net overall-in-one control schema, directly it is connected with central station of floating dock photoelectric integral type switch by optical fiber, decrease the signal of telecommunication and be converted to optical signal link, thus ensure that auxiliary control net DCS system is stablized and economical operation.
DCS then have employed the collection of the ring optical networks realization control data of Hitachi's H5000M control system, and the exchange of this structural information is real-time, and when a nodes break down, this system adaptive can realize bi-directionally sent data, improves the reliability of network service.The configuration of each operator station is safeguarded and is realized by the switch of DCS, is stelliform connection topology configuration, and electric dust removing system is also to realize exchanging with the data of operator station, history station by the switch of DCS, employs OPC agreement.
Construction key operation: the I O point verification of each system of auxiliary control net, auxiliary control net DCS programming in logic, auxiliary control net DCS ipc monitor configuration, auxiliary control net DCS logic, the static debugging of ipc monitor configuration, auxiliary control net DCS system networking, DCS system network test, the communication test between DCS and PLC, double net switching undisturbed, auxiliary control net DCS logic, the dynamic debugging of ipc monitor configuration.
Claims (6)
1. thermal power plant's auxiliary control net integral control system, it is characterized in that: the PLC of each remove function system connects the auxiliary control switch in EPA, DCS controller is connected with auxiliary control switch passs on control instruction, DCS controller uses the DCS identical with main frame, each substation and each DCS controller to use ring optical networks to connect.
2. according to the thermal power plant's auxiliary control net integral control system described in claim 1, it is characterised in that: the auxiliary control switch of Ethernet uses hub-and-spoke configuration double-network redundant, and light net uses loop configuration redundancy, and DCS controller realizes double net switching undisturbed.
3. according to the thermal power plant's auxiliary control net integral control system described in claim 2, it is characterised in that: the communication module of the PLC of each remove function system uses 100MbitMR type light mouth.
Thermal power plant the most according to claim 2 auxiliary control net integral control system, it is characterised in that: connected by station switch between operator station, engineer station, history station.
Thermal power plant the most according to claim 2 auxiliary control net integral control system, it is characterised in that: DCS controller rate of load condensate is≤30%, is provided with 4 set hot standby DCS controller in whole system.
Thermal power plant the most according to claim 2 auxiliary control net integral control system, it is characterised in that: the electric dust removing system of thermal power plant uses OPC communication, realizes the connection with each operator station by DCS switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620212847.0U CN205581629U (en) | 2016-03-21 | 2016-03-21 | Accuse net integration control system assists in thermal power plant |
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| CN201620212847.0U CN205581629U (en) | 2016-03-21 | 2016-03-21 | Accuse net integration control system assists in thermal power plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112286153A (en) * | 2020-10-28 | 2021-01-29 | 广西投资集团北海发电有限公司 | DCS control system based on whole-plant auxiliary control integration under programmable controller |
| CN113050571A (en) * | 2021-03-22 | 2021-06-29 | 华润电力（温州）有限公司 | Thermal power plant operation control method and system |
| CN113162969A (en) * | 2021-01-25 | 2021-07-23 | 中广核工程有限公司 | Control network architecture for auxiliary system of nuclear power plant |
| CN113253681A (en) * | 2021-02-05 | 2021-08-13 | 武钢资源集团大冶铁矿有限公司 | Chute breaking system and remote control system of centralized control system |
-
2016
- 2016-03-21 CN CN201620212847.0U patent/CN205581629U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112286153A (en) * | 2020-10-28 | 2021-01-29 | 广西投资集团北海发电有限公司 | DCS control system based on whole-plant auxiliary control integration under programmable controller |
| CN113162969A (en) * | 2021-01-25 | 2021-07-23 | 中广核工程有限公司 | Control network architecture for auxiliary system of nuclear power plant |
| CN113253681A (en) * | 2021-02-05 | 2021-08-13 | 武钢资源集团大冶铁矿有限公司 | Chute breaking system and remote control system of centralized control system |
| CN113050571A (en) * | 2021-03-22 | 2021-06-29 | 华润电力（温州）有限公司 | Thermal power plant operation control method and system |
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Granted publication date: 20160914 Termination date: 20170321 |
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