CN106168795B - Coal gasification dynamic simulation system - Google Patents
Coal gasification dynamic simulation system Download PDFInfo
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- CN106168795B CN106168795B CN201610833624.0A CN201610833624A CN106168795B CN 106168795 B CN106168795 B CN 106168795B CN 201610833624 A CN201610833624 A CN 201610833624A CN 106168795 B CN106168795 B CN 106168795B
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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]
- G05B19/41885—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 modeling, simulation of the manufacturing system
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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
- G05B2219/32—Operator till task planning
- G05B2219/32339—Object oriented modeling, design, analysis, implementation, simulation language
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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 provides a coal gasification dynamic simulation system, and belongs to the technical field of coal chemical industry. The coal gasification dynamic simulation system comprises: the simulation model server is used for providing a modeling interface and a model operation platform of the coal gasification dynamic simulation system; the instructor station is used for controlling the operation of the coal gasification dynamic simulation system model; the site station is used for realizing the remote operation of the system simulated by the coal gasification dynamic simulation system model; the DCS controller simulation station is used for simulating a control execution environment of the DCS controller on the PC; and the DCS is used for operating a human-computer interface related to the operation of the coal gasification dynamic simulation system. The system can be used for carrying out on-site simulation training on operators in the coal chemical industry and can also assist designers to carry out dynamic simulation on the pulverized coal gasification device in the start-stop process and the discontinuous process.
Description
Technical Field
The invention belongs to the technical field of coal chemical industry, and particularly relates to a coal gasification dynamic simulation system.
Background
With the development of economy, the comprehensive utilization of coal is more and more concerned. The pulverized coal gasification technology has a plurality of application fields, such as industrial gas, civil gas, chemical synthesis and fuel oil synthesis raw gas, combined cycle power generation fuel gas, hydrogen production, liquefaction and the like.
The control system of the pulverized coal gasification device is complex, and operators are easy to stop the device without reason due to improper operation, so that huge loss is caused. The traditional training mode is only theoretical training and cannot be operated on the computer; for the field practice of the device already running, the factory does not allow real-time operation practice.
The traditional static simulation technology, such as the existing Distributed Control System (DCS) technology, can only solve the technical and economic evaluation of material and energy constant calculation, equipment size, cost calculation and process in the normal production and continuous process, and is incapable of simulating the start-stop process and the discontinuous process of the device.
Disclosure of Invention
The invention provides a coal gasification dynamic simulation system, which can be used for carrying out on-site simulation training on operators in coal chemical industry and assisting designers in carrying out dynamic simulation on the coal gasification device in the start-stop process and the discontinuous process.
The invention provides a coal gasification dynamic simulation system, which comprises: the system comprises a simulation model server, an instructor station, a site station, a DCS controller simulation station, a DCS engineer station and a DCS operation station; the teacher station and the field station are connected with the simulation model server through a network, and the simulation model server, the DCS controller simulation station, the DCS engineer station and the DCS operation station are all connected to a communication bus;
the simulation model server is used for providing a modeling interface of the coal gasification dynamic simulation system and providing an operation platform for the established coal gasification dynamic simulation system model;
the teacher station is used for a teacher to control the operation of the coal gasification dynamic simulation system model through a Distributed Control System (DCS) and simulation control software;
the on-site station is used for a site operator to realize the remote operation of the coal gasification dynamic simulation system simulated by the coal gasification dynamic simulation system model;
the DCS controller simulation station is used for simulating a control execution environment of the DCS controller on a PC (personal computer), so that a control configuration package used for actual production can be directly used for the coal gasification dynamic simulation system, and a DCS configuration file generated or modified by the coal gasification dynamic simulation system is uploaded to a real DCS;
the DCS engineer station is used for providing an interface for performing off-line configuration, configuration work and on-line supervision, control and maintenance on the DCS through locally installed DCS configuration control and operation software;
the DCS operation station is used for operating a human-computer interface related to the operation of the coal gasification dynamic simulation system through locally installed DCS configuration control and operation software and providing remote operation for the coal gasification dynamic simulation system model.
The coal gasification dynamic simulation system further comprises a printer connected to the communication bus, and the printer is used for printing an exercise report and a system maintenance report of the coal gasification dynamic simulation system under the control of the instructor station.
Wherein, the coal gasification dynamic simulation system model comprises: the system comprises a coal pressurizing and coal feeding unit, a gasification and synthesis gas washing unit, a slag and grey water processing unit and a public engineering unit in the pulverized coal gasification process.
Wherein the simulation model server comprises:
the modeling module is used for providing a modeling interface of the coal gasification dynamic simulation system;
the storage module is used for storing the coal gasification dynamic simulation system model established by the modeling module;
the optimization module is used for providing an interface for editing and modifying the coal gasification dynamic simulation system model stored in the storage module on line;
the debugging module is used for providing an interface for testing and debugging the coal gasification dynamic simulation system model stored by the storage module;
the configuration module is used for providing an interface for carrying out configuration of a preset training function according to the coal gasification dynamic simulation system model stored by the storage module;
and the operation module is used for providing an operation platform for the coal gasification dynamic simulation system model.
Wherein the instructor station comprises:
the simulation scenario selection module is used for providing a plurality of selection interfaces of pre-stored initial states through DCS and simulation control software and starting the coal gasification dynamic simulation system model according to the selected initial states;
the interference and fault selection module is used for providing an interface for leading in a preset/self-defined fault mode into the coal gasification dynamic simulation system model through DCS and simulation control software and storing the led-in fault mode for a user to select;
the instructor variable module is used for providing an interface for modifying or adding parameter values of preset variables in the coal gasification dynamic simulation system model through DCS and simulation control software;
the time scale adjusting module is used for providing an interface for adjusting the simulation speed of the coal gasification dynamic simulation system model through DCS and simulation control software;
the process variable module is used for providing an interface for setting a display mode of the process variable of the coal gasification dynamic simulation system model through DCS and simulation control software;
the snapshot acquisition module is used for providing the functions of shooting and storing snapshots through DCS and simulation control software in the simulation process; each snapshot corresponds to the running state and data of one coal gasification dynamic simulation system model at one moment;
the backtracking module is used for providing functions of automatically storing and backtracking the coal gasification dynamic simulation process according to a preset period through the DCS and the simulation control software;
the trend display module is used for displaying the trend of the process variable and providing an interface for changing the displayed process variable and creating or changing a trend group through DCS and simulation control software;
the student evaluation module is used for monitoring the capability of the student for controlling the operation of the plant within the specified constraint through DCS and simulation control software and providing a corresponding monitoring report;
the recording module is used for recording the training log file through the DCS and the simulation control software; wherein, the training log file records the actions of instructors, the actions of students and the alarm, warning and information displayed on the DCS operation station.
The interference and fault selection module is internally and pre-stored with fault modes including but not limited to full-field power failure, too low coal burner cooling water flow, too low or too high steam drum liquid level, too low boiler circulating water flow to a coil pipe, too low gasifier chilling chamber liquid level, too low washing tower liquid level, too high pressure difference between a burner cooling water tank and a gasifier, low normal-pressure coal bunker material level, breakage of a flushing water pipeline expansion joint of a lock bucket flushing water tank, sudden and large fluctuation of pulverized coal pipeline flow or pulverized coal breakage.
And the instructor variable module is also used for providing an interface for inserting preset factory interferences on the basis of simulation through DCS and simulation control software and sending each inserted preset factory interference to the interference and fault selection module for storage as a custom fault mode.
The snapshot obtaining module is further configured to send each taken snapshot as an initial state to the simulation scenario selection module for saving.
Wherein the remote operations performed by the site station include, but are not limited to: the on-site manual switch valve, the on-site switch panel and the switch are arranged on a button on an auxiliary console in the control room.
Wherein the field station is also used for realizing the relevant operation of an emergency stop system ESD; the relevant operations of the ESD include, but are not limited to, modification delay and enforcement.
The DCS engineer station is also used for acquiring DCS engineer station operation records and DCS engineer station data records; and the simulation model server is also used for communicating with the DCS through an OPC protocol or a custom protocol and communicating with the simulation model server in real time through the custom protocol.
The simulation model server provides a modeling interface of the coal gasification dynamic simulation system through dynamic simulation software UniSim Design.
And the instructor station/field station realizes the connection between the DCS and the coal gasification dynamic simulation system through simulation control software Unisim options.
Wherein the DCS configuration control and operation software adopts an Experion PKS module.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the coal gasification dynamic simulation system provided by the invention can train operators to control the capacity of the coal gasification device, shorten the start-up and shutdown time and reduce accidents; the device can be used for design inspection and control system inspection before the device is started, and the field engineering time is saved; the method can also be used for process research, the feasibility of technical reconstruction measures of the device is checked, and the professional quality of technical personnel is improved; and the method can also be used for a test platform of advanced control, and the success rate of advanced control projects is improved.
Drawings
FIG. 1 is a schematic structural diagram of a coal gasification dynamic simulation system according to the present invention;
FIG. 2 is a schematic structural diagram of another coal gasification dynamic simulation system according to the present invention;
FIG. 3 is a schematic diagram of a preferred embodiment of the simulation model server 1;
fig. 4 is a schematic diagram of a preferred embodiment of the instructor station 2.
Detailed Description
The use of engineering simulation techniques in the process industry, particularly the chemical industry, has gained popularity in many developed countries. Along with the complexity and the refinement of the process flow and the continuous development of factory equipment, the process requirements on the production process are rapidly increased, so that the control requirements are greatly increased, and the requirements on operators, field technicians, managers and instrument personnel are higher and higher. With the gradual development of the application of the process system simulation technology, the functions of the process system simulation technology are more and more extensive. At present, the application of simulation technology in the field of process industry relates to the aspects of education and training, engineering design, auxiliary production, auxiliary research and the like, and the social and economic benefits of the simulation technology are increasingly remarkable.
In order to solve the problems that operators cannot be trained on site and static simulation technology cannot simulate the starting and stopping processes and the discontinuous processes of the pulverized coal gasification device in the prior art, the invention provides a set of full-flow dynamic simulation system for coal chemical industry by combining with engineering simulation technology. The system also has the functions of better assisting designers to carry out process optimization feasibility research, control scheme optimization, device start-stop scheme demonstration and the like.
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows a coal gasification dynamic simulation system provided by the present invention, which includes: the system comprises a simulation model server 1, an instructor station 2, a field station 3, a DCS controller simulation station 4, a DCS engineer station 5, a DCS operation station 6 and network equipment. The network equipment is used for establishing a system local area network, so that the simulation model server 1, the instructor station 2, the field station 3, the DCS controller simulation station 4, the DCS engineer station 5 and the DCS operation station 6 establish communication. The teacher station 2 and the field station 3 are connected with the simulation model server 1 through a network, and the simulation model server 1, the DCS controller simulation station 4, the DCS engineer station 5 and the DCS operation station 6 are all connected to a communication bus;
and the simulation model server 1 is used for providing a modeling interface of the coal gasification dynamic simulation system and providing an operation platform for the established coal gasification dynamic simulation system model. Specifically, the simulation model server 1 is a core computer for operating the coal gasification dynamic simulation system provided by the present invention, and is used for enabling an OTS engineer to perform configuration modeling of a chemical unit, development of a simulation model, operation of a dynamic simulation process, process optimization research and optimization of a control scheme through dynamic simulation software. Furthermore, the simulation model server 1 can also realize the following functions: editing the model file on line, and modifying the technological process; testing and debugging the current and updated models; performing specific training function configurations, etc. Preferably, the coal gasification dynamic simulation system model pre-established on the simulation model server 1 includes: the system comprises a coal pressurizing and coal feeding unit, a gasification and synthesis gas washing unit, a slag and grey water processing unit and a public engineering unit in the pulverized coal gasification process.
And the instructor station 2 is used for controlling the operation of the coal gasification dynamic simulation system model by an instructor through the distributed control system DCS and the simulation control software Unisim options. The instructor station 2 controls the operation of the dynamic simulation program for instructor training simulation scenario selection, disturbance and fault selection, instructor variables, variable time scales, process variables, snapshot/backtrack and replay, trends, setting training courses, student performance assessment, etc. for the student. Through the human-machine interface of the instructor station, many operations can be performed, such as running the OTS, executing commands, selecting a function, and the like. The instructor console employs the Windows operating system, which can simultaneously display multiple frames or Windows arranged in a stacked fashion.
The field station 3 is used for a field operator to realize remote operation of the coal gasification dynamic simulation system simulated by the coal gasification dynamic simulation system model, and the remote operation can not be completed on the DCS operation station, such as a field manual switch valve, a field switch panel or a button switch on an auxiliary console positioned in a control room. Preferably, the field station also implements the relevant operations of an Emergency Shutdown Device (ESD), including modification delays, enforcement, etc., which are not done on the DCS, but are required in the on/off and Emergency states. The operator can complete the function of the auxiliary operation table on the graphical interface of the station through a mouse. When the system is not connected with the DCS operation station, the field station 3 can also replace the functions of the DCS operation station, and operators can realize various DCS operation functions such as the application (manual, automatic, cascade and the like) of a controller, the starting and stopping of a pump and the like through the station.
The DCS controller simulation station 4 is configured to simulate a control execution environment of the DCS controller on the PC, so that the control configuration package used for actual production can be directly used in the system (i.e., the coal gasification dynamic simulation system provided by the present invention), and upload the DCS configuration file generated or modified by the coal gasification dynamic simulation system to a real DCS. The configuration of the station is based on DCS factory standard, and the quantity of the station is determined according to the requirement of the DCS factory on the capacity of the simulation station.
And the DCS engineer station 5 is configured to provide an interface (such as a human-machine interface) for performing offline configuration, configuration work, online supervision, control and maintenance on the DCS through locally installed DCS configuration control and operation software. Specifically, the DCS engineer station 5, in addition to having all functions of the DCS operation station, may also perform functions such as configuration (program configuration and screen configuration), debugging, controller uploading, downloading, and modification, and also configure the control station; in addition, operator stations may be added or subtracted. Preferably, the DCS engineer station also has the function of a data service station, and is responsible for collecting local operation records and data records, and converting data protocols. The data protocol conversion function is specifically as follows: the simulation model server is communicated with the DCS through an OPC (OLE for Process control) protocol or a custom protocol, is communicated with the simulation model server through a network in real time through the custom protocol, and then starts to control algorithm operation and data information transmission according to a received operation instruction.
And the DCS operation station 6 is used for operating a human-computer interface related to the operation of the coal gasification dynamic simulation system through locally installed DCS configuration control and operation software and providing remote operation on the coal gasification dynamic simulation system model. The configuration of software and hardware of the OTS system is completely consistent with that of the DCS operation station for production. User configuration files, such as operator interfaces, are copied from the production DCS and downloaded to the operator station so that the interfaces are consistent with those used by the production equipment. The operator realizes the following functions through the station: monitoring parameters, commissioning of controllers (manual, automatic, cascade, etc.), start and stop of sequence control, start and stop of pumps, etc.
The coal gasification dynamic simulation System provided by the invention is equivalent to an Operating Training System (OTS) specially aiming at coal gasification, can be used for carrying out on-site simulation Training on operators in the coal chemical industry, and can also be used for assisting designers to carry out dynamic simulation on a pulverized coal gasification device in the start-stop process and the discontinuous process.
In a preferred embodiment, as shown in fig. 2, the coal gasification dynamic simulation system provided by the present invention further comprises a printer 7 connected to the communication bus, wherein the printer 7 is used for printing the practice report and the system maintenance report of the coal gasification dynamic simulation system under the control of the instructor station 2.
Fig. 3 is a schematic structural diagram of a preferred embodiment of the simulation model server 1, and as shown in fig. 3, the simulation model server 1 includes:
the modeling module 101 is used for providing a modeling interface of the coal gasification dynamic simulation system;
the storage module 102 is configured to store the coal gasification dynamic simulation system model established by the modeling module 101;
the optimization module 103 is used for providing an interface for online editing and modifying the coal gasification dynamic simulation system model stored in the storage module 102;
the debugging module 104 is used for providing an interface for testing and debugging the coal gasification dynamic simulation system model stored in the storage module 102;
a configuration module 105, configured to provide an interface for configuring predetermined training functions according to the coal gasification dynamic simulation system model stored in the storage module 102;
the operation module 106 is configured to provide an operation platform for the coal gasification dynamic simulation system model, that is, an operation platform is provided for the modules such as the modeling module 101, the storage module 102, the optimization module 103, the debugging module 104, and the configuration module 105.
The dynamic simulation software is a key part of the whole simulation system, the dynamic simulation software adopted by the coal gasification dynamic simulation system provided by the invention is UniSim Design, and is installed on a simulation model server, namely: the simulation model server 1 provides a modeling interface of the coal gasification dynamic simulation system through dynamic simulation software UniSim Design. The UniSim Design model is highly accurate and precise, and is a software-based representation of a real factory. In an actual simulation project, a process engineer collects all raw data such as equipment technical specifications, design specifications, operating conditions, material and heat balance data, and then uses the data to configure and construct a device model, thereby ensuring the accuracy of the device model. The model adopts a simultaneous equation method, namely, equations of all unit modules involved in the whole process system and connection equations among the modules form a huge equation set for simultaneous solution. The chemical process simulation is carried out by applying a simultaneous equation method, and actually, the solution of the problem in the actual process is converted into the solution of the mathematical problem of a large equation set. Whether a design-type problem or a simulation-type problem, whether the process contains a recycling equation set or not, becomes indistinguishable in this way. The control block or the convergence block is not needed to be arranged in the simulation process.
In the coal gasification dynamic simulation system provided by the invention, Unisim options is adopted as simulation control software. Unisim options can connect Unisim Design with DCS, implement data transfer and model control, and implement ESD integration (including ESD configuration and PID screen). The instructor station 2/the field station 3 realizes the connection of the systems simulated by the DCS and coal gasification dynamic simulation system models through simulation control software Unisim options.
The DCS configuration control and operation software adopted in the coal gasification dynamic simulation system provided by the invention is an expert PKS module and is installed on an instructor station 2, a DCS operation station 6 and a DCS engineer station 5. The DCS system adopts the interface file to communicate with the simulation control software, and does not directly apply the simulation software to simulate. The communication mode ensures that the operation method of the operation Station software Station in the assembly is the same as the operation method of the on-site real Station, thereby achieving the optimal simulation effect. Configuration Studio software in the Experion PKS module can carry out functions of Configuration (program Configuration and picture Configuration) on the DCS, debugging, uploading, downloading, modifying and the like.
Fig. 4 is a schematic structural diagram of a preferred embodiment of the instructor station 2, and as shown in fig. 4, the instructor station 2 includes:
and the simulation scenario selection module 201 is configured to provide a selection interface of a plurality of pre-stored initial states through the DCS and the simulation control software, and start the coal gasification dynamic simulation system model according to the selected initial state. With this module, the instructor can start the simulation from different initial states (simulation scenarios).
And the interference and fault selection module 202 is configured to provide an interface for introducing a preset/custom fault mode into the coal gasification dynamic simulation system model through the DCS and the simulation control software, and store the introduced fault mode for a user to select. Wherein such faults, e.g. simulating equipment or meters like pump power supply tripping, control valve failure, etc., are introduced in a time-delayed or auto-ramped manner. Preferably, the coal gasification dynamic simulation system provided by the invention specially develops fault modes aiming at coal gasification, which are preset in the interference and fault selection module 202, such as full power failure, too low coal burner cooling water flow, too low or too high steam drum liquid level, too low boiler circulating water flow to a coil, too low gasifier chilling chamber liquid level, too low washing tower liquid level, too high burner cooling water tank and gasifier pressure difference, low normal pressure coal bunker level, broken lock bucket flushing water tank flushing water pipe expansion joint, sudden and large fluctuation of pulverized coal pipeline flow or broken pulverized coal, and the like.
And the instructor variable module 203 is used for providing an interface for modifying or adding parameter values of preset variables in the coal gasification dynamic simulation system model through DCS and simulation control software. By means of this module, the instructor can change the parameter values of predetermined variables, such as cooling water temperature changes, etc. Preferably, the instructor can also insert predetermined factory disturbances on a simulated basis through this module, such as: heat exchanger fouling, rate of equipment performance degradation, etc., and these inserted predetermined plant disturbances are sent as a custom failure mode to the disturbance and fault selection module 202 for introduction into storage at any time in the simulation in a time-delayed or ramped manner. The instructor variables may be changed directly in the instructor graphical interface or list provided by the present module.
And the time scale adjusting module 204 is used for providing an interface for adjusting the simulation speed of the running coal gasification dynamic simulation system model through DCS and simulation control software. In particular, the instructor may select a desired simulation speed through this module, whereby the instructor may slow or speed up the process variation. The time scale that the instructor can change is 1/2 times, 1 time, 2 times, 4 times relative to the actual speed, but the speed that can be used in practice is limited by the chosen DCS system option speed and system hardware.
And the process variable module 205 is used for providing an interface for setting a display mode of the process variable of the coal gasification dynamic simulation system model through the DCS and the simulation control software. The instructor can display any selected process variable on the same page or on different pages of the local display interface through the module, and the number of pages and the number of variables on each page can be adjusted.
A snapshot obtaining module 206, configured to provide, through the DCS and the simulation control software, a function of taking and storing a snapshot in the simulation process; each snapshot corresponds to the operation state and data of one coal gasification dynamic simulation system model at one moment. Specifically, during the simulation operation, for each model, the instructor can take at least 64 "snapshots" at any time through this module. These "snapshots" are stored in the hard disk, and the total number of snapshots may increase as the available hard disk space and the number of models within the system increase. Preferably, the snapshot taken by the snapshot obtaining module 206 may be sent to the simulation scenario selection module 201 to be saved for use as an "initial state".
And the backtracking module 207 is used for providing functions of automatically storing and backtracking the coal gasification dynamic simulation process according to a preset period through the DCS and the simulation control software. The period of backtracking can be set by the instructor and these backtracking can be saved on the hard disk.
A trend display module 208 for displaying trends in the process variables and providing an interface for changing the displayed process variables, creating or changing trend groups through the DCS and simulation control software.
The trainee evaluation module 209 monitors the trainee's ability to control plant operations within specified constraints through the DCS and simulation control software and provides corresponding monitoring reports. The simulation system provided by the invention can monitor and track the process variables in a list and bar graph mode.
A recording module 210, configured to record a training log file through the DCS and the simulation control software; wherein, the training log file records the actions of the instructor, the actions of the student and the alarm, the warning and the information displayed on the DCS operation station 6.
The coal gasification dynamic simulation system provided by the scheme can dynamically simulate a coal gasification system, so that the operation training of an operator for controlling the coal gasification device is realized, the start-up and shutdown time is shortened, and the accidents are reduced; the device can be used for design inspection and control system inspection before the device is started, and the field engineering time is saved; the method can also be used for process research, the feasibility of technical reconstruction measures of the device is checked, and the professional quality of technical personnel is improved; and the method can also be used for a test platform of advanced control, and the success rate of advanced control projects is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A coal gasification dynamic simulation system, comprising: the system comprises a simulation model server, an instructor station, a site station, a DCS controller simulation station, a DCS engineer station and a DCS operation station; the teacher station and the field station are connected with the simulation model server through a network, and the simulation model server, the DCS controller simulation station, the DCS engineer station and the DCS operation station are all connected to a communication bus;
the simulation model server is used for providing a modeling interface of the coal gasification dynamic simulation system and providing an operation platform for the established coal gasification dynamic simulation system model;
the teacher station is used for a teacher to control the operation of the coal gasification dynamic simulation system model through a Distributed Control System (DCS) and simulation control software;
the on-site station is used for a site operator to realize the remote operation of the coal gasification dynamic simulation system simulated by the coal gasification dynamic simulation system model;
the DCS controller simulation station is used for simulating a control execution environment of the DCS controller on a PC (personal computer), so that a control configuration package used for actual production can be directly used for the coal gasification dynamic simulation system, and a DCS configuration file generated or modified by the coal gasification dynamic simulation system is uploaded to a real DCS;
the DCS engineer station is used for providing an interface for performing off-line configuration, configuration work and on-line supervision, control and maintenance on the DCS through locally installed DCS configuration control and operation software;
the DCS operation station is used for operating a human-computer interface related to the operation of the coal gasification dynamic simulation system through locally installed DCS configuration control and operation software and providing remote operation on the coal gasification dynamic simulation system model;
wherein the instructor station comprises:
the simulation scenario selection module is used for providing a plurality of selection interfaces of pre-stored initial states through DCS and simulation control software and starting the coal gasification dynamic simulation system model according to the selected initial states;
the interference and fault selection module is used for providing an interface for leading in a preset/self-defined fault mode into the coal gasification dynamic simulation system model through DCS and simulation control software and storing the led-in fault mode for a user to select;
the instructor variable module is used for providing an interface for modifying or adding parameter values of preset variables in the coal gasification dynamic simulation system model through DCS and simulation control software;
the time scale adjusting module is used for providing an interface for adjusting the simulation speed of the coal gasification dynamic simulation system model through DCS and simulation control software;
the process variable module is used for providing an interface for setting a display mode of the process variable of the coal gasification dynamic simulation system model through DCS and simulation control software;
the snapshot acquisition module is used for providing the functions of shooting and storing snapshots through DCS and simulation control software in the simulation process; each snapshot corresponds to the running state and data of one coal gasification dynamic simulation system model at one moment;
the backtracking module is used for providing functions of automatically storing and backtracking the coal gasification dynamic simulation process according to a preset period through the DCS and the simulation control software;
the trend display module is used for displaying the trend of the process variable and providing an interface for changing the displayed process variable and creating or changing a trend group through DCS and simulation control software;
the student evaluation module is used for monitoring the capability of the student for controlling the operation of the plant within the specified constraint through DCS and simulation control software and providing a corresponding monitoring report;
the recording module is used for recording the training log file through the DCS and the simulation control software; wherein, the training log file records the actions of instructors, the actions of students and the alarm, warning and information displayed on the DCS operation station.
2. The coal gasification dynamic simulation system of claim 1, further comprising a printer connected to the communication bus, the printer configured to print an exercise report and a system maintenance report of the coal gasification dynamic simulation system under the control of the instructor station.
3. The coal gasification dynamic simulation system of claim 1, wherein the coal gasification dynamic simulation system model comprises: the system comprises a coal pressurizing and coal feeding unit, a gasification and synthesis gas washing unit, a slag and grey water processing unit and a public engineering unit in the pulverized coal gasification process.
4. The coal gasification dynamic simulation system of claim 1, wherein the simulation model server comprises:
the modeling module is used for providing a modeling interface of the coal gasification dynamic simulation system;
the storage module is used for storing the coal gasification dynamic simulation system model established by the modeling module;
the optimization module is used for providing an interface for editing and modifying the coal gasification dynamic simulation system model stored in the storage module on line;
the debugging module is used for providing an interface for testing and debugging the coal gasification dynamic simulation system model stored by the storage module;
the configuration module is used for providing an interface for carrying out configuration of a preset training function according to the coal gasification dynamic simulation system model stored by the storage module;
and the operation module is used for providing an operation platform for the coal gasification dynamic simulation system model.
5. The coal gasification dynamic simulation system of claim 1, wherein the disturbance and fault selection module has pre-stored fault patterns including, but not limited to, full blackout, too low coal burner cooling water flow, too low or too high drum level, too low boiler circulation water flow to coil, too low gasifier quench chamber level, too low scrubber tower level, too high a burner cooling water tank to gasifier pressure differential, low atmospheric coal bunker level, broken lock hopper flush water line expansion joints, sudden large fluctuations in pulverized coal line flow, or broken pulverized coal.
6. The coal gasification dynamic simulation system of claim 1, wherein the instructor variable module is further configured to provide an interface for inserting predetermined plant disturbances on a simulated basis through the DCS and simulation control software, and to send each of the inserted predetermined plant disturbances to the disturbance and fault selection module for storage as a custom fault mode.
7. The coal gasification dynamic simulation system according to claim 1, wherein the snapshot obtaining module is further configured to send each snapshot taken as an initial state to the simulation scenario selection module for saving.
8. The coal gasification dynamic simulation system of claim 1, wherein the remote operations performed by the site include, but are not limited to: the on-site manual switch valve, the on-site switch panel and the switch are arranged on an auxiliary console button in the control room.
9. The coal gasification dynamic simulation system of claim 8, wherein the site station is further configured to enable emergency shutdown system ESD related operations; the relevant operations of the ESD include, but are not limited to, modification delay and enforcement.
10. The coal gasification dynamic simulation system of claim 1, wherein the DCS engineer station is further configured to collect DCS engineer station operational records and DCS engineer station data records; and the simulation model server is also used for communicating with the DCS through an OPC protocol or a custom protocol and communicating with the simulation model server in real time through the custom protocol.
11. The coal gasification dynamic simulation system of claim 1, wherein the simulation model server provides a modeling interface of the coal gasification dynamic simulation system through dynamic simulation software UniSim Design.
12. The coal gasification dynamic simulation system of claim 11, wherein the instructor/site station implements DCS and coal gasification dynamic simulation system connection via simulation control software Unisim options.
13. The coal gasification dynamic simulation system of claim 1, wherein the DCS configuration control and operation software employs an Experion PKS module.
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