CN112462713A - Graphical logic control system, method, equipment and readable storage medium - Google Patents
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- 238000012360 testing method Methods 0.000 abstract description 20
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31094—Data exchange between modules, cells, devices, processors
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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]
Abstract
The invention discloses a graphical logic control system, which comprises a reading unit, a logic control unit and a logic control unit, wherein the reading unit is used for reading a DCS control language; the first conversion unit is used for converting the DCS control language into a text and then converting the text into graphic module logic; the graphic module logic control unit is used for controlling and modifying the graphic module logic; the second conversion unit is used for converting the modified graphic module logic into a modified text and then converting the modified text into a modified DCS control language; and the input unit is used for inputting the modified DCS system control language into the DCS control system to control the thermal power generating unit. The graphical logic control system can quickly convert a language form-filling type logic control process into a graphical modular structure, can flexibly and graphically display the logic process, and can perform online test, optimization and control strategy optimization; the accuracy of a control scheme of the thermal power generating unit can be ensured, and logic errors and personal safety accidents of the thermal power generating unit are greatly reduced.
Description
Technical Field
The invention belongs to the technical field of DCS control, and particularly relates to a graphical logic control system, a graphical logic control method, graphical logic control equipment and a readable storage medium.
Background
At present, a power plant uses a DCS system to control the power plant, most of the DCS systems adopted by the existing power plants are FOXBORO (Focus Polo) IA systems (I/A Series industrial control systems), the logic of the DCS systems is in a statement form, the logic cannot be visually checked, and the logic can be analyzed only by manually translating the logic sentence by sentence into SAMA (SAMA) diagrams. Although CAD versions can be referred to, along with the year-by-year logic modification, the modification and updating of some CAD logic diagrams cannot be synchronized, so that the logic is unclear, and the mastering of some logics by operators and thermal operators and the analysis of some events are influenced.
During the operation of the power plant, the logic is transformed by different personnel and various control schemes, partial garbage logic or potential errors exist in a logic control program, and a thermotechnical worker who is newly handed over can hardly read a clear logic process and a clear control principle, so that great risk exists for the safe operation of a unit.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a graphical logic control system, a graphical logic control method, graphical logic control equipment and a readable storage medium, which can flexibly and graphically display a logic process and can perform online test, optimization and control strategy optimization; the accuracy of a control scheme of the thermal power generating unit can be ensured, and logic errors and personal safety accidents of the thermal power generating unit are greatly reduced.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a graphic logic control system comprises
The reading unit is used for reading the DCS control language;
the first conversion unit is used for converting the DCS control language into a text and then converting the text into graphic module logic;
the graphic module logic control unit is used for controlling and modifying the graphic module logic;
the second conversion unit is used for converting the modified graphic module logic into a modified text and then converting the modified text into a modified DCS control language;
and the input unit is used for inputting the modified DCS system control language into the DCS control system to control the thermal power generating unit.
A graphical logic control method comprises the following steps,
step 1, reading a DCS non-graphical control language;
step 4, converting the changed graphic module logic into a modified text;
step 5, converting the modified text into a modified DCS control language;
and 6, inputting the modified DCS system control language into a DCS control system, and controlling the thermal power generating unit by the DCS control system.
Preferably, the graphical logic control method is a single-step operation, the steps 1 to 5 are executed, and the thermal power generating unit control parameters are manually input.
Preferably, the graphical logic control method is continuously operated, closed-loop adjustment is performed after steps 1 to 5 are performed, iterative calculation is performed on control parameters of the thermal power generating unit, and then steps 1 to 5 are continuously and circularly performed.
Further, the continuous operation interval time is not less than 200 ms.
Preferably, the text and the modified text are stored in a notepad format.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of a graphical logic control method as claimed in any one of the preceding claims when executing the computer program.
A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of a graphical logic control method as claimed in any one of the preceding claims.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides a graphical logic control system, which can rapidly convert a language filling type logic control process into a graphical modularized structure, the connection of logic modules is a variable name and linear connection mode, can graphically display the logic principle, the control method and the control parameters of each unit object device, can perfectly display the logic principle of the control process, the connection relation among the control modules and the parameter values of the control modules, can greatly improve the convenience of thermal operators in testing, optimizing, modifying, upgrading and maintaining the control logic, can realize the whole process of advanced testing, optimizing and confirming the logic of the upgrading and upgrading on the system, and can play a great role in ensuring the safety production of a power plant. The control logic of the black box mode is changed into a graphical control module scheme, a variable value dynamic refreshing display process, an on-line logic modification process and an operation test process, and very obvious production benefits can be brought to the thermal production process of the power plant.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a graphical logic control method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a graphic logic control system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a graphic module logic in a graphic logic control system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in figure 1, the graphical logic control system based on the industrial controller automatically converts an IA logic control process text file exported by FOXBORO into graphical logic aiming at the DCS logic which is actually running, so that the system not only meets the requirements of thermal operators on consulting, researching and testing the logic, keeps the logic graph up to date, but also can complete the whole logic control process of the thermal power unit.
A graphic logic control system comprises
The reading unit is used for reading the DCS control language;
the first conversion unit is used for converting the DCS control language into a text and then converting the text into graphic module logic;
the graphic module logic control unit is used for controlling and modifying the graphic module logic;
the second conversion unit is used for converting the modified graphic module logic into a modified text and then converting the modified text into a modified DCS control language;
and the input unit is used for inputting the modified DCS system control language into the DCS control system to control the thermal power generating unit.
The graphical logic control system can perfectly realize the statement table-filling type logic process through the imaging by developing an IA special control algorithm, realizes the graphical, visual and accurate control process of the logic control of the thermal power generating unit, and is installed on an industrial control machine to realize the clear logic control process of the thermal power generating unit.
Importing a DCS logic backup file by a graphic logic control system based on an industrial control machine, and automatically generating a graphic file with strong readability; the method has the advantages that the method has the function of on-line testing based on the formed graphic module logic, the control logic process can completely replace the IA statement filling type logic process of FOXBORO, great help can be provided for improving the logic test and optimization process of thermal workers, and the complex control process of 1:1 of the IA logic on the thermal power generating unit can be completed.
48 graphical algorithms for controlling the logic process in the IA mode are developed to realize the logic process in the IA statement form filling mode, each algorithm or two algorithms can complete the single-line execution statement of IA, the device object logic control process in the IA language form filling mode can be completely converted into the execution process of logic modules, all the logic modules can be graphically displayed on a window of an industrial controller, each control logic module is converted into a graphical control block, and parameter modification, logic modification, control logic verification and control strategy optimization can be performed on each module on the graphical window. Each logic module on the graphic logic control system is in graphic display, control signal transmission among the logic modules is in line connection, parameter values of the logic signals can be displayed, and the whole process of logic control can be clearly shown in each step of control logic operation.
Because of the graphic display and execution of the control process, the operation of the control logic can be firstly carried out in an industrial control machine, and the operation result of each step can also be displayed on a graphic module window. The thermal staff can visually compile control logic and test each step of the logic operation process in a graphic modularization way; the logic of the IA can also be read into a graphical logic control system based on the industrial control machine in the industrial control machine, and the control logic process of the IA of the sunshine # 2 thermal power generating unit can be analyzed. The dynamic simulation test can be carried out on the IA logic, and the result is displayed graphically; the method can also be used for single-step or continuous simulation operation, experiment logic operation process parameters, optimization of a logic control scheme and completion of the whole control logic process of the thermal power generating unit.
Before the modified IA control logic is put into the logic control process of the thermal power unit, simulation test can be carried out on a graphical logic control system based on an industrial controller, and simulation optimization and logic verification of a graphical visual window are one aspect, wherein the most important thing is that the logic after verification meets the practical application of the site, and the correctness of the logic control of the thermal power unit is ensured.
As shown in fig. 2, a graphic logic control method includes the steps of,
step 1, reading a DCS non-graphical control language;
step 4, converting the changed graphic module logic into a modified text;
step 5, converting the modified text into a modified DCS control language;
and 6, inputting the modified DCS system control language into a DCS control system, and controlling the thermal power generating unit by the DCS control system.
The invention relates to a graphical logic control method, which is used for automatically converting a logic control text file derived from a control logic scheme of a form filling language mode into a graphical and modular logic control process aiming at the DCS logic which is actually running. By carrying out dynamic simulation calculation on the graphic logic, single-step simulation, experimental logic process and optimization of a logic control scheme can be realized. Visual analysis, research, test logic and unit logic control of second-stage 680MW unit IA logic by thermal workers can be completed. When the IA logic of the FOXBORO of the #1/#2 unit is modified, a logic dynamic operation test can be carried out by utilizing the graphical logic control system based on the industrial control machine.
As shown in fig. 3, the graphical logic control system based on the industrial controller can meet the graphical display, operation and test of control logic, and can complete various complex operation controls of the thermal power generating unit. The main control logic process optimization improves the graphic visualization translation conversion of the fill-up statement type logic process of the IA control logic.
The dynamic simulation test is carried out on the logic after translation and conversion, and the logic can run in a single step, namely each logic control process module pauses after one operation in every 200ms until an engineer clicks the execution single step button again to carry out the next logic circulation; the method can also be operated continuously, all logic control process modules operate once every 200ms, the calculation result is recorded in the memory information, and then the operation is performed again on the basis of the current calculation result, so that the logic process can be subjected to closed-loop regulation and logic cycle iterative calculation; the double click of any logic control module can pop up a control structure graph window of the logic module, can clearly display the parameter value input process and the parameter output process after logic operation of the control block, and can modify all control parameters on line, and the modified parameters can be directly used for enjoying the pleasure of clouds on line. On the window of the graphic logic control system, the input instruction and the input parameter value of each control module can be modified on line, and the modified control parameters can directly enter the next iteration calculation of the next control logic process.
The invention relates to a graphical logic control system method based on an industrial controller, which comprises the following contents: 48 standard algorithms developed according to IA control logic; resolving into a graphical control module according to the IA logic statement; the graphical module can be used for dynamic operation, simulation test and control strategy optimization on an industrial controller; parameters of the control logic module can be modified online, and the effect of the control scheme can be verified; the statement filling type control logic of various IA can be simulated, tested and patterned; the method can flexibly display the logic process in a graphical way, and can perform online test, optimization and control strategy optimization; the accuracy of a control scheme of the thermal power generating unit can be ensured, and logic errors and personal safety accidents of the thermal power generating unit are greatly reduced.
The principle of a graphic logic control system based on an industrial control machine is shown in figure 1. The basis for realizing the graphic logic control system based on the industrial control machine is a special algorithm aiming at IA control logic and the graphic logic control system.
According to the IA table-filling type statement logic file, the system can automatically read in a logic control module which is a graphical module, can dynamically analyze IA logic, perform simulation test, modify parameters on line and the like, completely meets the difficult problems of invisibility of the IA logic and incapability of dynamic test/optimization, can greatly improve the logic control safety of the 680MW thermal power unit in the second day of sunshine, and can optimize a unit control strategy.
The industrial control computer reads the non-graphic control language of DCS system, converts it into text description file with notebook format of control logic, the text format control logic file is scanned and converted in the industrial control computer to form sentence logic, according to different classifications, said system designs the industrial special control logic process algorithm for converting logic control sentence process into graphic control process, and automatically translates these sentence logics into graphic module logic process line by line, said graphic logic control system can convert the text process logic into control function module, and can analyze the text description control signal into a signal transmission mode of variable name coding mode, said system includes the steps of converting text logic signal into a signal value transmitted by variable name, and converting the text logic into correspondent algorithm function module, and converting the signal value recording mode of the stack into a fixed memory area read-write mode. The system can convert a control logic and signal value recording mode described by a text into a graphical algorithm function module and a signal variable name mode, can complete statement control logic control through logic function block operation, and transmits signal parameter values through variable names.
The logic graphic block of the system can be logically synchronized in real time on an industrial control computer, can be dynamically analyzed in real time, can be used for off-line simulation tests, can be used for modifying on-line parameters, and can realize the optimization of control logic. The optimized graphic logic is converted into statement logic, logic language which can be identified by the DCS system is formed for downloading, and the closed loop function of the whole control is realized.
The graphical logic control method of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The graphical logic control method of the present invention, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium.
In an exemplary embodiment, a computer-readable storage medium is further provided, and all or part of the processes in the method according to the above embodiments of the present invention can also be implemented by a computer program to instruct related hardware, where the computer program can be stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. Computer-readable storage media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice. The computer storage media may be any available media or data storage device that can be accessed by a computer, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks, etc.), optical memory such as CDs, DVDs, BDs, HVDs, etc.), semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory, solid state disks), etc.
In an exemplary embodiment, a computer device is also provided, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the graphical logic control method when executing the computer program. The processor may be a central processing unit, but may be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or the like.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A graphic logic control system is characterized by comprising
The reading unit is used for reading the DCS control language;
the first conversion unit is used for converting the DCS control language into a text and then converting the text into graphic module logic;
the graphic module logic control unit is used for controlling and modifying the graphic module logic;
the second conversion unit is used for converting the modified graphic module logic into a modified text and then converting the modified text into a modified DCS control language;
and the input unit is used for inputting the modified DCS system control language into the DCS control system to control the thermal power generating unit.
2. A graphical logic control method is characterized by comprising the following steps,
step 1, reading a DCS non-graphical control language;
step 2, converting the non-graphical control language into a text;
step 3, converting the text into a graphic module logic, and carrying out control change on the graphic module logic;
step 4, converting the changed graphic module logic into a modified text;
step 5, converting the modified text into a modified DCS control language;
and 6, inputting the modified DCS system control language into a DCS control system, and controlling the thermal power generating unit by the DCS control system.
3. The graphical logic control method as claimed in claim 2, wherein the graphical logic control method is a single-step operation, and the steps 1 to 5 are executed, and the thermal power generating unit control parameters are manually input.
4. The graphical logic control method according to claim 2, wherein the graphical logic control method is continuously operated, closed-loop adjustment is performed after steps 1 to 5 are performed, and steps 1 to 5 are continuously and circularly performed after iterative calculation is performed on the control parameters of the thermal power generating unit.
5. The graphic logic control method according to claim 4, wherein the continuous operation interval time is not less than 200 ms.
6. The graphical logic control method of claim 2, wherein the text and the modified text are stored in a notepad format.
7. A computer arrangement comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of a graphical logic control method according to any of claims 2-6 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of a graphical logic control method according to any one of claims 2 to 6.
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