CN107272442A - A kind of large-scale cryogenic system real-time simulation platform - Google Patents
A kind of large-scale cryogenic system real-time simulation platform Download PDFInfo
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- CN107272442A CN107272442A CN201710377911.XA CN201710377911A CN107272442A CN 107272442 A CN107272442 A CN 107272442A CN 201710377911 A CN201710377911 A CN 201710377911A CN 107272442 A CN107272442 A CN 107272442A
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Abstract
The invention discloses a kind of large-scale cryogenic system real-time simulation platform, compressor model, ice chest model and load module are set up in software, cryogenic system model is integrated into using sequential method.Based on EPICS frameworks, Controlling model is set up, low-temperature model and control system model real-time communication are realized based on OPC communications protocol.The present invention has more preferable integration relative to other cryogenic system analog platforms, is particularly directed to the typical non-linear, time-varying that large-scale cryogenic system has, Multivariable Coupling characteristic, the features such as system running pattern is complicated.
Description
Technical field
The present invention relates to cryogenic system emulation platform field, specifically a kind of large-scale cryogenic system real-time simulation platform.
Background technology
Large-scale cryogenic system is one of essential important subsystem of the big science experimental provision with superconducting apparatus,
Stable, reliable cold operation environment is provided for experimental provision, the efficiency of system and stablizes the whole large scientific facilities of sexual intercourse
Energy consumption and running status.Energy consumption of large-scale low-temperature system itself is big, and efficiency is low, and operational mode is complicated.
Due to the multivariable, strong coupling of large-scale low-temperature system, the control system being related in dynamic operation is sufficiently complex,
Want intuitively to carry out process optimization, stability analysis difficulty is larger.Can be with by carrying out the research of large-scale low-temperature system simulation technology
Help to solve this problem.Dynamic simulation is studied by way of system modelling, and virtual workflow is built on computers, is utilized
Partial model replaces physical device, so that the running status of reproduction equipment.It so can not only improve entirety of the people to system
Cognition, and without equipment actual motion, reduce the unnecessary energy, the waste of man power and material.As emulation technology exists
Process stimulating technology is gradually applied on big-and-middle-sized cryogenic system by industrial fast development, researcher.Dynamic simulation
Technology is able to be widely used in large-scale low-temperature system, it is intended to improve the understanding of real system dynamic characteristic, the dynamic process of flow
Optimization design, verifies new control method and strategy, safeguard protection and fault diagnosis and prediction, the debugging of system virtualization process and operation
Member's training etc..
For the emulation of large scientific facilities cryogenic system, large-scale system is developed into from the simulation of single cryogenic system
The simulation of cold and the whole equipment of bringing onto load user, focuses primarily upon temperature field, pressure field, the control strategy side of whole system
The research in face.Current dynamic simulation, which still has some key issues, needs solution, first, international process simulation software
Hysys and Ecosimpro etc. contains the unit module that can apply in large-scale low-temperature system, still, common software
Simulation precision, model are set the need for can not fully meeting actual cryogenic system simulation.In addition, the dynamic of large-scale low-temperature system
Emulation concentrates on process model and part control loop is realized, lacks Control system simulation platform.
The content of the invention is existing to solve it is an object of the invention to provide a kind of large-scale cryogenic system real-time simulation platform
Technology in the simulation of large-scale cryogenic system can not by flowsheeting and Control system simulation it is integrated the problem of, and real-time simulation
During the problem of there is data syn-chronization defect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of large-scale cryogenic system real-time simulation platform, it is characterised in that：It is included in Ecosimpro softwares and is built according to mechanism
The cryogenic system model that mould and system identifying method are set up, the cryogenic system model includes compressor model, ice chest mould
Type and load module；Compressor model, ice chest model and load module are based on sequential method connection and are built into chilling process model；
The measurement sensor model based on modelling by mechanism is also set up in Ecosimpro softwares, and the addition of measurement sensor model is low
In warm process model；
Also include the control system model set up based on EPICS frameworks, control system model includes pid control module, analog quantity
Signaling module, wherein digital quantity signal module, pid control circuit use IOC as Virtual Controller with processing data and realization
Control logic；
Being set up in Ecosimpro softwares has opc server, and being set up in IOC Virtual Controllers has OPC client, based on OPC
Communications protocol realizes the real-time communication of chilling process model and control system model.
In control system model, analog signalses module is connected with pid control module, realizes control loop control.Simulation
Amount signaling module and digital signaling module are based on OPC communications protocol and are connected by OPC client with the communication of chilling process model.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：The compressor model include but
It is not limited to helical-lobe compressor, middle pressure helium air accumulator model, high pressure and low pressure pipeline model and pneumatic control valve model.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：The ice chest model is included but not
It is limited to turbo-expander model, Heat Exchangers, absorber, pipeline and pneumatic regulation model.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：The load module is included but not
It is limited to phase separator, cold press and regulating valve model.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：The measurement sensor model bag
Include but be not limited to pressure sensor, temperature sensor, flow sensor and liquid level sensor.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：According to existing cryogenic system
Flow and design parameter, input setting substantially for compressor model, ice chest model and load module in Ecosimpro softwares respectively
Parameter is counted, according to basic design parameters and helium low temperature is set up based on modelling by mechanism and system identifying method in Ecosimpro softwares
System model.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：The compressor model, ice chest mould
Type and load module are based on the principle that sequential method is connected：
（1）, connected by heating power part between two storage devices；
（2）, one pass through a series of thermal technology's part between storage device and a thermodynamic apparatus and connect.
A kind of described large-scale cryogenic system real-time simulation platform, it is characterised in that：It is low using a PC as storing
The system model server of warm process model and measurement sensor model, storage control system model is used as using another PC
Also using open source software CSS as host computer monitoring software in work station, work station, IOC Virtual Controllers and ipc monitor are soft
Connected between part by Profibus buses, control logic algorithm, database and monitoring interface configured in host computer monitoring software,
And realize the real-time communication based on OPC communications protocol physically through Ethernet between system model server and work station.
The present invention is provided in a kind of large-scale cryogenic system real-time simulation platform open based on EPICS, control system
Position machine software develops monitoring interface using open source software CSS, and OPC communications protocol is communicated as simulation model data and control system
Agreement, implementation process model and control system real-time communication simplify the model configuration of large-scale cryogenic system, it is easy to accomplish whole
Individual simulation system it is integrated.
The present invention has more preferable integration relative to other cryogenic system analog platforms, is particularly directed to large-scale helium low temperature
The typical non-linear, time-varying that system has, Multivariable Coupling characteristic, the features such as system running pattern is complicated, traditional low temperature
Simulation system is based primarily upon numerical simulation and flowsheeting, isolates with control system, it is impossible to the dynamic of true simulation cryogenic system
Characteristic and control algolithm.The present invention is using open control structure implementation process and controls the integrated of simulation, is built based on part
Mould simulates the dynamic characteristic of actual cryogenic system, and the stability and reliability of whole system can be highly emulated based on this platform,
The demand of operator's training and virtual operation is met simultaneously.
Brief description of the drawings
Fig. 1 is the system entire block diagram of the present invention.
Fig. 2 is opc server development structure figure.
Embodiment
As shown in figure 1, a kind of large-scale cryogenic system real-time simulation platform, is included in Ecosimpro softwares according to machine
The cryogenic system model that reason modeling and system identifying method are set up, the cryogenic system model includes compressor model, cold
Box model and load module；Compressor model, ice chest model and load module are based on sequential method connection and are built into chilling process
Model；The measurement sensor model based on modelling by mechanism is also set up in Ecosimpro softwares, and measurement sensor model adds
Enter in chilling process model；
Also include the control system model set up based on EPICS frameworks, control system model includes pid control module, analog quantity
Signaling module, wherein digital quantity signal module, pid control circuit use IOC as Virtual Controller with processing data and realization
Control logic；
In the present invention, analog signal module needs to be connected with pid control module.Analog signal module, data signal module is based on
OPC communications protocol is connected by OPC client with low-temperature model communication.
In the present invention, PID is control module, and IOC is Virtual Controller, and Virtual Controller is all control loops of processing
With data input and output.Pid control module is only intended in pid control circuit.
Being set up in Ecosimpro softwares has opc server, and being set up in IOC Virtual Controllers has OPC client, base
The real-time communication of chilling process model and control system model is realized in OPC communications protocol.
In control system model, analog signalses module is connected with pid control module, realizes control loop control.Simulation
Amount signaling module and digital signaling module are based on OPC communications protocol and are connected by OPC client with the communication of chilling process model.
Compressor model includes but is not limited to helical-lobe compressor, middle pressure helium air accumulator model, high pressure and low pressure pipeline model
And pneumatic control valve model.
Ice chest model includes but is not limited to turbo-expander model, Heat Exchangers, absorber, pipeline and pneumatic regulation
Model.
Load module includes but is not limited to phase separator, cold press and regulating valve model.Measurement sensor model includes
But it is not limited to pressure sensor, temperature sensor, flow sensor and liquid level sensor.
According to the flow and design parameter of existing cryogenic system, compressor mould is inputted in Ecosimpro softwares respectively
According to basic design parameters and based on mechanism in the basic design parameters of type, ice chest model and load module, Ecosimpro softwares
Modeling and system identifying method set up cryogenic system model.
Compressor model, ice chest model and load module are based on the principle that sequential method is connected：
（1）, connected by heating power part between two storage devices；
（2）, one pass through a series of thermal technology's part between storage device and a thermodynamic apparatus and connect.
Using a PC as storage chilling process model and the system model server of measurement sensor model, with another
Platform PC as storage control system model work station, also using open source software CSS as host computer monitoring software in work station,
Connected between IOC Virtual Controllers and host computer monitoring software by Profibus buses, control is configured in host computer monitoring software
Realized between logical algorithm processed, database and monitoring interface, and system model server and work station physically through Ethernet
Real-time communication based on OPC communications protocol.
As Fig. 2 show opc server development structure, low-temperature model is set up in Ecosimpro first, experiment is founded
Simulation obtains experimental result.Then, DECK models are created on the basis of experiment, the number interacted with external client needs is configured
After the success of, DECK model creations, opc server is set up, opc server relevant parameter is configured.Register opc server success
Afterwards, connection OPC client carries out real-time communication test.
Claims (8)
1. a kind of large-scale cryogenic system real-time simulation platform, it is characterised in that：It is included in Ecosimpro softwares according to mechanism
The cryogenic system model that modeling and system identifying method are set up, the cryogenic system model includes compressor model, ice chest
Model and load module；Compressor model, ice chest model and load module are based on sequential method connection and are built into chilling process mould
Type；The measurement sensor model based on modelling by mechanism is also set up in Ecosimpro softwares, and measurement sensor model is added
In chilling process model；
Also include the control system model set up based on EPICS frameworks, control system model includes pid control module, analog quantity
Signaling module, wherein digital quantity signal module, pid control module use IOC as Virtual Controller with processing data and realization
Control logic；
Being set up in Ecosimpro softwares has opc server, and being set up in IOC Virtual Controllers has OPC client, based on OPC
Communications protocol realizes the real-time communication of chilling process model and control system model.
2. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：The compressor
Model includes but is not limited to helical-lobe compressor, middle pressure helium air accumulator model, high pressure and low pressure pipeline model and pneumatic control valve
Model.
3. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：The ice chest mould
Type includes but is not limited to turbo-expander model, Heat Exchangers, absorber, pipeline and pneumatic regulation model.
4. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：The load mould
Type includes but is not limited to phase separator, cold press and regulating valve model.
5. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：The measurement is passed
Sensor model includes but is not limited to pressure sensor, temperature sensor, flow sensor and liquid level sensor.
6. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：According to existing helium
The flow and design parameter of cryogenic system, input compressor model, ice chest model and load mould in Ecosimpro softwares respectively
According to basic design parameters and based on modelling by mechanism and system identifying method in the basic design parameters of type, Ecosimpro softwares
Set up cryogenic system model.
7. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：The compressor
Model, ice chest model and load module are based on the principle that sequential method is connected：
（1）, connected by heating power part between two storage devices；
（2）, one pass through a series of thermal technology's part between storage device and a thermodynamic apparatus and connect.
8. a kind of large-scale cryogenic system real-time simulation platform according to claim 1, it is characterised in that：With a PC
As storage chilling process model and the system model server of measurement sensor model, storage control is used as using another PC
Also using open source software CSS as host computer monitoring software in the work station of system model, work station, IOC Virtual Controllers with it is upper
Connected between the machine monitoring software of position by Profibus buses, control logic algorithm, database are configured in host computer monitoring software
Realized between monitoring interface, and system model server and work station physically through Ethernet based on OPC communications protocol
Real-time communication.
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| CN201710377911.XA CN107272442B (en) | 2017-05-25 | 2017-05-25 | Real-time simulation platform for large helium cryogenic system |
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| CN114035493A (en) * | 2020-11-05 | 2022-02-11 | 中国科学院理化技术研究所 | Real-time dynamic simulation platform for large hydrogen liquefier or refrigerator |
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