CN204406199U - A kind of cooling heating and power generation system test platform - Google Patents
A kind of cooling heating and power generation system test platform Download PDFInfo
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- CN204406199U CN204406199U CN201520133095.4U CN201520133095U CN204406199U CN 204406199 U CN204406199 U CN 204406199U CN 201520133095 U CN201520133095 U CN 201520133095U CN 204406199 U CN204406199 U CN 204406199U
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a kind of cooling heating and power generation system test platform, comprise CCHP analogue system, programmable signal Collect conversion system and control system; Described programmable signal Collect conversion system, for CCHP analogue system is communicated with control system, according to the control signal of control system analog to digital conversion is carried out to it and signal transacting is sent to CCHP analogue system, the feedback signal of supply of cooling, heating and electrical powers analogue system is fed back to control system by communication interface simultaneously; By setting up supply of cooling, heating and electrical powers control system test platform, the development progress of cool and thermal power control system can be accelerated, greatly shorten the construction cycle.
Description
Technical field
The utility model relates to cooling heating and power generation system emulation field, particularly relates to a kind of test macro and method of testing of the cooling heating and power generation system based on TRNSYS.
Background technology
Environment and energy problem are the significant problems that the world today faces, urgently to be resolved hurrily.Along with the strategy of sustainable development carries forward vigorously the continuous enhancing with people's energy-conserving and environment-protective consciousness, cooling heating and power generation system becomes one of environmental protect quality and the effective measures improving energy utilization rate gradually.Supply of cooling, heating and electrical powers is on a kind of basis being based upon cascaded utilization of energy concept, by refrigeration, heats (for warm supplying hot water) and the integrated energy supplyystem that generates electricity.Supply of cooling, heating and electrical powers carries out cascade utilization to the energy of different quality, more high-grade energy is used for generating, and the heat energy of lower taste, then for freezing or heating, improves energy utilization rate to greatest extent, the deficiency of bulk power grid in security and stability can be made up simultaneously, significant to its development.
Control system and control strategy thereof are the kernel instruction systems of distributed triple-generation system operating mechanism, send the operating mode instruction of whole system, the action command of each equipment, the running status monitoring each equipment etc.Be not only security of system, the basis normally run and guarantee, and particularly crucial to aspects such as raising whole system efficiency, reduction energy resource consumptions.In R&D process, for control system provides one close to real controlled device, test is carried out to its function most important.But cooling heating and power generation system is very complicated, relates to electrically, control, the multiple field of thermal technology, equipment is various, and controling parameters is numerous, and the field adjustable of control system is greatly limited.In the design process because controlled device is incomplete, cannot object test be carried out, following two kinds of modes are relied on to the debugging of control system:
A kind of mode is simply tested by rule of thumb, after cooling heating and power generation system has been built, carry out control system object test again.This method is feasible reluctantly for the very simple system of control strategy, easily causes the decline of utilization factor and the waste of the energy in co-feeding system actual motion.Meanwhile, sometimes need multiple devices combined debugging, experimental field can not meet requirement at all, seriously hinders the development progress of new control strategy.
Another kind of mode is by a large amount of calculating and Software Simulation Test, and the control system of emulation and the control system gap of practical application are comparatively large, and control effects also has larger difference with the control system of reality.
Utility model content
For solving the deficiency that prior art exists, the utility model discloses a kind of cooling heating and power generation system test platform and method of testing, the application can be widely used in the checking of different cooling heating and power generation system control strategy, guarantee the reliability of control system in practical application, improve the testing efficiency of control system, shorten the construction cycle of control system, thus ensure carrying out smoothly of supply of cooling, heating and electrical powers control system's development.In the application, Transient System Simulation Program software is referred to as TRNSYS software.
For achieving the above object, concrete scheme of the present utility model is as follows:
A kind of cooling heating and power generation system test platform, comprises CCHP analogue system, programmable signal Collect conversion system and control system;
Described CCHP analogue system, for building the virtual controlled device of cooling heating and power generation system in PC;
Described programmable signal Collect conversion system, for CCHP analogue system is communicated with control system, according to the control signal of control system analog to digital conversion is carried out to it and signal transacting is sent to CCHP analogue system, the feedback signal of supply of cooling, heating and electrical powers analogue system is fed back to control system by communication interface simultaneously;
Described control system, for the controlled device according to CCHP analogue system, sends control command.
Described CCHP analogue system comprises system simulation module, hourly load module, input interface module and output interface module, and described system simulation module, based on instantaneous system simulation TRNSYS software, builds cooling heating and power generation system;
Described hourly load module, for analog subscriber load;
Described input interface module, by reading in the control signal of programmable signal Collect conversion system, the operation of each equipment of the form control CCHP analogue system exported with module, signal is write programmable signal Collect conversion system by the form that the output signal of CCHP analogue system is then exported with signal by output interface module.
The load data of described customer charge both can be real user's historical load data, also can be Energyplus or Trnbuild software emulation data.
Described programmable signal Collect conversion system comprises FPGA main control module, signal acquisition module, signaling conversion circuit and signal processing circuit, signal acquisition module is by signaling conversion circuit extremely corresponding with analog quantity for the transmission or analog signal of collection, signaling conversion circuit is sent to signal processing circuit after changing analog quantity, and signal processing circuit is connected with FPGA main control module;
The digital quantity of collection is sent to the signaling conversion circuit corresponding with digital quantity by signal acquisition module, and signaling conversion circuit is connected with FPGA main control module.
What the described signaling conversion circuit corresponding with analog quantity adopted is isolation transforming circuit, comprises binary channels operational amplifier OP297.
What the described signaling conversion circuit corresponding with digital quantity adopted is optical coupling isolation circuit, comprises optical coupling isolator TLP521.
Described signal processing circuit is Kinetis K60 controller, carries out AD conversion and data processing, then through SPI interface, image data is transferred to FPGA main control module to the analog signals gathered.
Described supply of cooling, heating and electrical powers control system test platform, adopts simulation step length coordination technique, obtains the real time that step-length is once simulated in the computing of supply of cooling, heating and electrical powers analogue system, assign it to control system as the sampling time by input interface and output interface.In a step-length, analogue system is run a field control system and is also run once.The virtual condition simulating control system of approximate ideal, simulation computer calculates synchronous with control system, ensure that simulation accuracy.The step size coordinating meaning is exactly that the execution cycle of the control cycle of controller and computer software emulation is matched, approximate simulation real-time simulation.Step-length is time software setting step-length.
Be applied to a method of testing for cooling heating and power generation system test platform, comprise the following steps:
Step one: select corresponding test case according to actual control system and import in TRNSYS software, setting up CCHP analogue system;
Step 2: Real-time Load inputs: hourly load module user side cool and thermal power demand being imported CCHP analogue system;
Step 3: device parameter is set: according to the actual operation parameters data of equipment in CCHP analogue system, the device parameter in CCHP analogue system is set;
Step 4: according to the actual operation time of supply of cooling, heating and electrical powers analogue system, be assigned to control system as the sampling time.In a step-length, analogue system is run a field control system and is also run once;
Namely emulating time assignment once used to control system, as the computing step-length of control system.Such analogue system is run once, and control system is also run once.
Step 5: start time and end time that experiment simulation is set in TRNSYS software;
Step 6: interface configuration: interface configuration is carried out to the controlled device of CCHP analogue system and feedback signal, the simulation controlled device of CCHP analogue system and control system is set up and contacts;
Step 7: programmable signal Collect conversion system configuration: according to the demand of control system, the AI/AO/DI/DO passage of configurating programmable signals collecting converting system, makes the input and output of programmable signal Collect conversion system can by the PC identification of CCHP analogue system;
Step 8: start test, test terminates rear derivation test result: test result derived by the form of oscillogram or text document.
The utility model builds CCHP analogue system in order to virtual controlled device based on TRNSYS software in PC; Bidirectional data exchange and protocol conversion is realized by programmable signal translation interface between analogue system and control system.Control system runs cooling heating and power generation system control strategy.This system can accurate simulation cooling heating and power generation system, for control system provides a running environment similar to real running environment, greatly can shorten control system research and development and test period, reduce testing expense.The evaluate parameters such as the capacity usage ratio of analogue system can also be derived according to test result, conveniently control system be assessed.
The beneficial effects of the utility model:
1., by setting up supply of cooling, heating and electrical powers control system test platform, the development progress of cool and thermal power control system can be accelerated, greatly shorten the construction cycle.
2. the test job will originally must just can carried out at the scene, is transferred in laboratory in the situation not affecting measuring accuracy, has increased substantially the testing efficiency of control system.Meanwhile, can a series of index such as capacity usage ratio, economy of more different control system co-feeding system under different operating mode, contribute to the efficiency improving cooling heating and power generation system.
3., during new control system research and development, even if the specification of control system is not clear and definite, but control strategy and control method first can carry out development& testing, play a role in promoting to the exploitation of control strategy.
4., when not buying cooling heating and power generation system equipment, for control system provides a running environment similar to real running environment, greatly reduce the testing expense of control system.
5. cool and thermal power analogue system has output display function on PC, by generating folding line chart display model supplemental characteristic directly perceived, and the data such as the duty of the equipment such as internal combustion engine, lithium-bromide absorption-type refrigerating machine.
6. be conducive to the exploitation of cooling heating and power generation system peripheral software and upper monitoring software.
Accompanying drawing explanation
Fig. 1 is the utility model system architecture diagram;
Fig. 1 a is the utility model programmable signal Collect conversion system hardware structure schematic diagram;
Fig. 2 is the user's Real-time Load figure utilizing TRNbuild to simulate, wherein, user's refrigeration duty demand be on the occasion of, user's heat demand is negative value;
Fig. 3 is supply of cooling, heating and electrical powers analogue system test case surface chart;
Fig. 4 is supply of cooling, heating and electrical powers analogue system operation result figure mono-;
Fig. 5 is supply of cooling, heating and electrical powers analogue system operation result figure bis-;
In figure, 1, CCHP analogue system, 2, programmable signal Collect conversion system, 3, control system, 4, device requirement and parameter, 5, user's cool and thermal power load, 1-1, CCHP analogue system, 1-2, by time meet module, 1-3, output interface, 1-4, input interface.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, a kind of supply of cooling, heating and electrical powers control system test platform, comprises CCHP analogue system 1, programmable signal Collect conversion system 2, control system 3.Described supply of cooling, heating and electrical powers analogue system 1 is connected with control system 3 by programmable signal Collect conversion system 2.According to the control signal of control system 3, programmable signal Collect conversion system 2 is utilized to carry out analog to digital conversion and signal transacting to it, the feedback signal of the analogue system of supply of cooling, heating and electrical powers simultaneously 1 feeds back to control system 3 by communication interface, make whole system become closed-loop system, thus realize the test of supply of cooling, heating and electrical powers control system.
As shown in Figure 1a, programmable signal Collect conversion system comprises FPGA main control module, signal acquisition module, binary channels operational amplifier OP297, optical coupling isolator TLP521;
First the simulating signal of signal acquisition module collection carries out isolating, level conversion, transfer to front end signal acquisition chip KinetisK60 controller, AD conversion and data processing are carried out to the analog signals gathered, then through SPI interface, image data is transferred to FPGA main control module;
First the digital signal of signal acquisition module collection passes through light-coupled isolation, then FPGA main control module is inputed to, carry out message exchange by Ethernet between FPGA main control module and PC, thus make can carry out two-way communication between control system to be tested and supply of cooling, heating and electrical powers analogue system.
Wherein, main control module, signal acquisition module, AD conversion and light-coupled isolation all adopt modular design, can according to the demand configuration IO interface of control system, and structure is more flexible.
Supply of cooling, heating and electrical powers analogue system contains CCHP analogue system 1-1, hourly load module 1-2, input interface 1-4 and output interface 1-3.User's cool and thermal power load 5 information be sent to by time meet module 1-2, device requirement and parameter 4 information are sent to CCHP analogue system 1-1, analogue system is based on the instantaneous system simulator program Transient System Simulation Program software of specialty, adopt modular programming structure, can according to user's needs, build containing internal combustion engine, lithium-bromide absorption-type refrigerating machine (flue gas type/hot-water type/fuel supplementing type), waste heat boiler, heat interchanger (flue gas/hot water), blower fan comb, the cooling heating and power generation system of the device models such as valve (solenoid valve/T-valve/electric butterfly valve).Hourly load module is used for analog subscriber load, and the load data in module both can be real user's historical load data, also can be the software emulation data such as Energyplus or Trnbuild, as shown in Figure 2.Newly-built and the amendment support software development platform VC6.0 and Fortran6.6 of device model.Input interface and output interface, utilize the interface module that Software Development Platform VC6.0 develops.Input interface 1-4 by reading in the control signal of programmable signal Collect conversion system 2, the operation of each equipment of form control supply of cooling, heating and electrical powers analogue system exported with module.Signal is write programmable signal converting system by the form that the output signal of analogue system is then exported with signal by output interface 1-3.
Programmable signal Collect conversion system 2 is controller with FPGA, has programmable multi-channel A I/AO/DI/DO IO channel, freely configures according to different demand.Isolation transmission technology, differential input and output technology, shielding & grounding technology is adopted to reduce outside noise to the interference of analogue system.By optical fiber, PC is connected with programmable signal Collect conversion system, reduces the delay of signal.
Described supply of cooling, heating and electrical powers control system test platform, adopts simulation step length coordination technique, makes simulation computer calculate synchronous with control system, while realizing real-time, ensure that simulation accuracy.
Be applied to a using method for the control system test platform of supply of cooling, heating and electrical powers, comprise the following steps:
(1) supply of cooling, heating and electrical powers analogue system 1 is selected: click and import test case button, select corresponding test case according to actual control system and import in TRNSYS.
(2) load parameter is set: user side cool and thermal power demand is imported analogue system Real-time Load module.
(3) device parameter is set: according to equipment actual operation parameters data, the device parameter in analogue system is set, makes it more close to real system operation characteristic.
(4) simulation step length is selected: input interface module and output interface module inside can software timekeeping system working times, according to the simulation time of meter supply of cooling, heating and electrical powers analogue system 1, select the corresponding time as the control system sampling period.
(5) be set: start time and end time that experiment simulation is set in TRNSYS software the test duration.
(6) interface configuration: carry out interface configuration to controlled device and feedback signal, makes the simulation controlled device of real-time emulation system and control system set up and contacts.
(7) programmable signal Collect conversion system 2 configures: according to the demand of control system, the AI/AO/DI/DO passage of configurating programmable signals collecting converting system 2, and the system input and output of making can by PC identification.
(8) start test, terminate rear derivation test result: test result derived by the form of oscillogram or text document.
As shown in Figure 3, a kind of test case of typical CCHP analogue system.
analogue system is as shown in Figure 3 set up in TRNSYS.
user's cool and thermal power load 5 inputs the hourly load module 1-2 of supply of cooling, heating and electrical powers analogue system 1,
according to the device parameter of fielded system, the device parameter in analogue system is set, to ensure the accuracy emulated.
according to the analogue system cycle of operation that input interface module and output interface module read, set the control cycle of control system 3 to be measured.
the signal such as flow, temperature of supply of cooling, heating and electrical powers analogue system 1, transfers to control system 3 by programmable signal Collect conversion system 2.Control system 3 is by the control signal of valve, water pump etc. simultaneously, inputs supply of cooling, heating and electrical powers analogue system 1, valve, water pump are controlled by programmable signal Collect conversion system 2.
check the Real time displaying figure on PC, observe according to oscillogram and treat whether examining system meets the requirements.Fig. 4, Fig. 5 are test result figure.Refrigerating capacity, heating capacity and refrigeration duty, thermal load are identical, and are all greater than 75% through calculating capacity usage ratio, prove that control system can the cogeneration cooling heating system of control imitation preferably.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (5)
1. a cooling heating and power generation system test platform, is characterized in that, comprises CCHP analogue system, programmable signal Collect conversion system and control system; Described CCHP analogue system is connected with programmable signal Collect conversion system and control system successively;
Described programmable signal Collect conversion system, for CCHP analogue system is communicated with control system, according to the control signal of control system analog to digital conversion is carried out to it and signal transacting is sent to CCHP analogue system, the feedback signal of supply of cooling, heating and electrical powers analogue system is fed back to control system by communication interface simultaneously.
2. a kind of cooling heating and power generation system test platform as claimed in claim 1, it is characterized in that, described programmable signal Collect conversion system comprises FPGA main control module, signal acquisition module, signaling conversion circuit and signal processing circuit, signal acquisition module is by signaling conversion circuit extremely corresponding with analog quantity for the transmission or analog signal of collection, signaling conversion circuit is sent to signal processing circuit after changing analog quantity, and signal processing circuit is connected with FPGA main control module;
The digital quantity of collection is sent to the signaling conversion circuit corresponding with digital quantity by signal acquisition module, and signaling conversion circuit is connected with FPGA main control module.
3. a kind of cooling heating and power generation system test platform as claimed in claim 2, is characterized in that, what the described signaling conversion circuit corresponding with analog quantity adopted is isolation transforming circuit, comprises binary channels operational amplifier OP297.
4. a kind of cooling heating and power generation system test platform as claimed in claim 2, is characterized in that, what the described signaling conversion circuit corresponding with digital quantity adopted is optical coupling isolation circuit, comprises optical coupling isolator TLP521.
5. a kind of cooling heating and power generation system test platform as claimed in claim 2, it is characterized in that, described signal processing circuit is Kinetis K60 controller, carries out AD conversion and data processing, then through SPI interface, image data is transferred to FPGA main control module to the analog signals gathered.
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| CN201520133095.4U CN204406199U (en) | 2015-03-09 | 2015-03-09 | A kind of cooling heating and power generation system test platform |
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| CN201520133095.4U CN204406199U (en) | 2015-03-09 | 2015-03-09 | A kind of cooling heating and power generation system test platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240128A (en) * | 2018-11-26 | 2019-01-18 | 山东大学 | A kind of new energy supply of cooling, heating and electrical powers real-time emulation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240128A (en) * | 2018-11-26 | 2019-01-18 | 山东大学 | A kind of new energy supply of cooling, heating and electrical powers real-time emulation system and method |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 |