CN104714539B - Testing platform and method for combined cooling, heating and power system - Google Patents
Testing platform and method for combined cooling, heating and power system Download PDFInfo
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- CN104714539B CN104714539B CN201510102779.2A CN201510102779A CN104714539B CN 104714539 B CN104714539 B CN 104714539B CN 201510102779 A CN201510102779 A CN 201510102779A CN 104714539 B CN104714539 B CN 104714539B
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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 invention discloses a testing platform and method for a combined cooling, heating and power system. The testing platform comprises a combined cooling, heating and power simulation system, a programmable signal acquisition and conversion system and a control system. The programmable signal acquisition and conversion system is used for building communication between the combined cooling, heating and power simulation system and the control system, conducting analog-digital conversion and signal processing on control signals of the control system, transmitting the processed control signals to the combined cooling, heating and power simulation system, and meanwhile feeding feedback signals of the combined cooling, heating and power simulation system back to the control system through a communication interface. Due to the fact that the testing platform for a combined cooling, heating and power control system is established, the progress of development of the combined cooling, heating and power control system can be accelerated, and the development cycle is shortened greatly.
Description
Technical field
The present invention relates to cooling heating and power generation system emulation field, more particularly to a kind of supply of cooling, heating and electrical powers system based on TRNSYS
The test system and method for testing of system.
Background technology
Environment and energy problem are the significant problems that the world today faces, it would be highly desirable to solved.With the strategy of sustainable development it is big
Push into the continuous enhancing realized with people's energy-conserving and environment-protective, cooling heating and power generation system is increasingly becoming improves environmental quality and raising energy
One of effective measures of source utilization rate.Supply of cooling, heating and electrical powers is that one kind is set up on the basis of cascaded utilization of energy concept, will freeze,
Heat (for warm supplying hot water) and the integrated energy supplyystem that generates electricity.Supply of cooling, heating and electrical powers carries out step to the energy of different qualities
Utilize, more high-grade energy is used to generate electricity, the heat energy of relatively low taste is then used to freeze or heat, and the energy is improved to greatest extent
Utilization rate, while deficiency of the bulk power grid in terms of security and stability can be made up, develops significant to it.
Control system and its control strategy are the kernel instruction systems of distributed triple-generation system operating mechanism, are sent
The operating mode instruction of whole system, the action command of each equipment, monitor running status of each equipment etc..It is not only system peace
Entirely, the normally basis of operation and guarantee, and it is particularly critical to improving the aspects such as whole system efficiency, reduction energy resource consumption.
In R＆D process, one is provided Jie Jin real controlled device, test is carried out to its function most important for control system.But
Cooling heating and power generation system is extremely complex, is related to electric, control, thermal technology's multiple fields, and equipment is various, and control parameter is numerous, control
The field adjustable of system is greatly limited.In the design process because controlled device is incomplete, it is impossible to carry out survey in kind
Examination, the debugging to control system relies on following two modes：
A kind of mode is simply to be tested by rule of thumb, is controlled again after the completion of cooling heating and power generation system is built and is
System object test.This method is feasible reluctantly for the very simple system of control strategy, easily causes co-feeding system actual motion
The decline of middle utilization rate and the waste of the energy.Simultaneously, it is sometimes desirable to which multiple devices combined debugging, experimental field can not meet at all
Require, seriously hinder the development progress of new control strategy.
Another way is the control system of emulation and the control of practical application by substantial amounts of calculating and Software Simulation Test
Away from larger, control effect also has larger difference to System level gray correlation processed with actual control system.
The content of the invention
To solve the deficiency that prior art is present, the invention discloses a kind of cooling heating and power generation system test platform and test
Method, the application can be widely applied for the checking of different cooling heating and power generation system control strategies, it is ensured that control system actually should
Reliability, improves the testing efficiency of control system, shortens the construction cycle of control system, so as to ensure supply of cooling, heating and electrical powers control
System development processed is smoothed out.Transient System Simulation Program softwares are referred to as in the application
TRNSYS softwares.
For achieving the above object, concrete scheme of the invention is as follows：
A kind of cooling heating and power generation system test platform, including the collection conversion of supply of cooling, heating and electrical powers analogue system, programmable signal
System and control system；
The supply of cooling, heating and electrical powers analogue system, for building the virtual controlled right of cooling heating and power generation system in PC
As；
The programmable signal gathers converting system, for supply of cooling, heating and electrical powers analogue system and control system to be led to
Letter, carries out analog-to-digital conversion to it and signal transacting is sent to supply of cooling, heating and electrical powers analogue system according to the control signal of control system,
Simultaneously the feedback signal of supply of cooling, heating and electrical powers analogue system is fed back to into control system by communication interface；
The control system, for according to the controlled device of supply of cooling, heating and electrical powers analogue system, sending control command.
The supply of cooling, heating and electrical powers analogue system includes system simulation module, hourly load module, input interface module and defeated
Outgoing interface module, the system simulation module simulates TRNSYS softwares based on instantaneous system, builds cooling heating and power generation system；
The hourly load module, for analog subscriber load；
The input interface module, the control signal of converting system is gathered by reading in programmable signal, with module output
Form control supply of cooling, heating and electrical powers analogue system each equipment operation, the output signal of supply of cooling, heating and electrical powers analogue system then by
Output interface module writes a signal to programmable signal collection converting system in the form of signal output.
The load data of the customer charge both can be real user's history load data, or
Energyplus or Trnbuild software emulation data.
The programmable signal collection converting system includes FPGA main control modules, signal acquisition module, signaling conversion circuit
And signal processing circuit, signal acquisition module is by the transmission or analog signal for gathering to signaling conversion circuit corresponding with analog quantity, mould
The corresponding signaling conversion circuit of analog quantity is sent to signal processing circuit, signal processing circuit and FPGA after changing to analog quantity
Main control module is connected；
The digital quantity of collection is sent to signaling conversion circuit corresponding with digital quantity, digital quantity correspondence by signal acquisition module
Signaling conversion circuit be connected with FPGA main control modules.
The signaling conversion circuit corresponding with analog quantity uses isolation transforming circuit, including binary channels operation amplifier
Device OP297.
The signaling conversion circuit corresponding with digital quantity uses optical coupling isolation circuit, including optical coupling isolator
TLP521。
The signal processing circuit is Kinetis K60 controllers, and the analog signalses to gathering are AD converted and number
According to process, then Jing SPI interfaces transmit gathered data to FPGA main control modules.
The supply of cooling, heating and electrical powers control system test platform, using simulation step length coordination technique, by input interface and defeated
Outgoing interface obtains the computing of supply of cooling, heating and electrical powers analogue system and once simulates real time of step-length, assigns it to control system as adopting
The sample time.In a step-length, analogue system is run a field control system and is also run once.Approximate ideal simulates control
The virtual condition of system processed, simulation computer is synchronous with control system calculating, it is ensured that simulation accuracy.Step size coordinating looks like
The execution cycle that the controlling cycle and computer software of controller are emulated is matched, approximate simulation real-time simulation.Step-length is soft
The time of step-length is set on part.
A kind of method of testing for being applied to cooling heating and power generation system test platform, comprises the following steps：
Step one：Corresponding test case is selected according to actual control system and is imported in TRNSYS softwares, set up cold and hot
CCHP analogue system；
Step 2：Real-time Load is input into：By user side cool and thermal power demand import supply of cooling, heating and electrical powers analogue system by when bear
Lotus module；
Step 3：Device parameter is set：It is right according to the actual operation parameters data of equipment in supply of cooling, heating and electrical powers analogue system
Device parameter in supply of cooling, heating and electrical powers analogue system is set；
Step 4：By the actual operation time of supply of cooling, heating and electrical powers analogue system, control system is assigned to as the sampling time.
In one step-length, analogue system is run a field control system and is also run once；
Control system is assigned to the time once used is emulated, as the computing step-length of control system.So emulate
System operation once, also run once by control system.
Step 5：The time started and end time of experiment simulation are set in TRNSYS softwares；
Step 6：Interface is configured：Line interface configuration is entered to the controlled device and feedback signal of supply of cooling, heating and electrical powers analogue system,
The simulation controlled device and control system foundation for making supply of cooling, heating and electrical powers analogue system is contacted；
Step 7：Programmable signal collection converting system configuration：According to the demand of control system, configuration programmable signal is adopted
Collection converting system AI/AO/DI/DO passages, make programmable signal collection converting system input and output can be by cool and thermal power
The PC identification of alliance analogue system；
Step 8：Start test, test derives test result after terminating：Will by the form of oscillogram or text document
Test result is derived.
The present invention builds supply of cooling, heating and electrical powers analogue system to virtual controlled device based on TRNSYS softwares in PC；It is imitative
Very bidirectional data exchange and protocol conversion are realized by programmable signal translation interface between system and control system.Control system
Operation cooling heating and power generation system control strategy.The system can accurate simulation cooling heating and power generation system, provide one for control system
The individual running environment similar to real running environment, is substantially shorter control system research and development and test period, reduces testing expense.
Can be convenient that control system is estimated with according to assessment parameters such as the capacity usage ratios of test result derivation analogue system.
Beneficial effects of the present invention：
1., by setting up supply of cooling, heating and electrical powers control system test platform, the exploitation that can accelerate cold and hot electric control system is entered
Degree, greatly shortens the construction cycle.
2. the test job that just can must will be carried out at the scene originally, in the situation for not affecting measuring accuracy experiment is transferred to
In room, the testing efficiency of control system is greatly improved.Meanwhile, may compare difference control system alliance system under different operating modes
A series of indexs such as capacity usage ratio, the economy of system, are favorably improved the efficiency of cooling heating and power generation system.
3. when new control system is researched and developed, even if the specification of control system is no clear and definite, but control strategy and control method can
First to develop and test, the exploitation to control strategy plays a role in promoting.
4. in the case where cooling heating and power generation system equipment is not bought, one and real running environment are provided for control system
Similar running environment, greatly reduces the testing expense of control system.
5. cool and thermal power analogue system has output display function on PC, by generating broken line graph display model ginseng directly perceived
The data such as the working conditions of equipment such as number data, internal combustion engine, lithium-bromide absorption-type refrigerating machine.
6. the exploitation of cooling heating and power generation system peripheral software and upper monitoring software is conducive to.
Description of the drawings
Fig. 1 is present system structured flowchart；
Fig. 1 a are that programmable signal of the present invention gathers converting system hardware architecture diagram；
Fig. 2 is the user's Real-time Load figure simulated using TRNbuild, wherein, user's refrigeration duty demand is on the occasion of user
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 one；
Fig. 5 is supply of cooling, heating and electrical powers analogue system operation result figure two；
In figure, 1, supply of cooling, heating and electrical powers analogue system, 2, programmable signal collection converting system, 3, control system, 4, equipment
Demand and parameter, 5, the cold and hot electric load of user, 1-1, CCHP analogue system, 1-2, hourly load module, 1-3, output interface, 1-
4th, input interface.
Specific embodiment：
Below in conjunction with the accompanying drawings the present invention is described in detail：
As shown in figure 1, a kind of supply of cooling, heating and electrical powers control system test platform, including supply of cooling, heating and electrical powers analogue system 1, can compile
Journey signals collecting converting system 2, control system 3.Described supply of cooling, heating and electrical powers analogue system 1 is changed by programmable signal collection
System 2 is connected with control system 3.According to the control signal of control system 3, using programmable signal converting system 2 pairs is gathered
It carries out analog-to-digital conversion and signal transacting, while the feedback signal of supply of cooling, heating and electrical powers analogue system 1 is fed back to by communication interface
Control system 3, makes whole system become closed-loop system, so as to realize the test of supply of cooling, heating and electrical powers control system.
As shown in Figure 1a, programmable signal collection converting system includes FPGA main control modules, signal acquisition module, binary channels
Operational amplifier OP297, optical coupling isolator TLP521；
The analog signal of signal acquisition module collection is isolated first, level conversion, is transmitted to front end signal and is gathered core
Piece Kinetis K60 controllers, the analog signalses to gathering are AD converted and data processing, then Jing SPI interfaces will be gathered
Data transfer is to FPGA main control modules；
The data signal of signal acquisition module collection is then input to FPGA main control modules first by light-coupled isolation,
Enter row information by Ethernet between FPGA main control modules and PC to exchange, so that control system to be tested and cold and hot Electricity Federation
For two-way communication can be carried out between analogue system.
Wherein, main control module, signal acquisition module, AD conversion and light-coupled isolation adopts modularized design, can basis
The demand configuration input/output interface of control system, structure is more flexible.
Supply of cooling, heating and electrical powers analogue system contains CCHP analogue systems 1-1, hourly load module 1-2, input interface 1-4 and defeated
Outgoing interface 1-3.To hourly load module 1-2, device requirement and the information transmission of parameter 4 are extremely for the cold and hot information transmission of electric load 5 of user
CCHP analogue systems 1-1, instantaneous system simulation program Transient System Simulation of the analogue system based on specialty
Program softwares, using modular programming structure, can build containing internal combustion engine, suction-type lithium bromide system according to user's needs
Cold (flue gas type/hot-water type/fuel supplementing type), waste heat boiler, heat exchanger (flue gas/hot water), blower fan comb, valve (magnetic valve/tri-
Port valve/electric butterfly valve) etc. device model cooling heating and power generation system.Hourly load module is used for analog subscriber load, in module
Load data both can be the softwares such as real user's history load data, or Energyplus or Trnbuild
Emulation data, as shown in Figure 2.Software Development Platform VC6.0 and Fortran6.6 are supported in the newly-built and modification of device model.It is defeated
Incoming interface and output interface, the interface module developed using Software Development Platform VC6.0.Input interface 1-4 can be compiled by reading
The control signal of journey signals collecting converting system 2, with each equipment of the form control supply of cooling, heating and electrical powers analogue system of module output
Operation.The output signal of analogue system then writes a signal to programmable signal by output interface 1-3 in the form of signal output
Converting system.
Programmable signal gathers converting system 2, defeated with programmable multi-channel A I/AO/DI/DO with FPGA as controller
Enter output channel, freely configured according to different demands.Using isolation transmission technology, differential input and output technology, shielding and ground connection
Technology reduces interference of the outside noise to analogue system.PC and programmable signal are gathered into converting system by optical fiber to be connected,
Reduce the delay of signal.
Described supply of cooling, heating and electrical powers control system test platform, using simulation step length coordination technique, make simulation computer with
Control system calculates synchronous, while realizing real-time, it is ensured that simulation accuracy.
A kind of using method of the control system test platform for being applied to supply of cooling, heating and electrical powers, comprises the following steps：
(1) supply of cooling, heating and electrical powers analogue system 1 is selected：Click on and import test case button, selected according to actual control system
Corresponding test case is simultaneously imported in TRNSYS.
(2) load parameter is set：User side cool and thermal power demand is imported into 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
It is fixed, it is allowed to be more nearly real system operation characteristic.
(4) simulation step length is selected：Input interface module and output interface module inside can software timekeeping system run time,
According to the simulation time of meter supply of cooling, heating and electrical powers analogue system 1, the corresponding time is selected as the control system sampling period.
(5) testing time is set：The time started and end time of experiment simulation are set in TRNSYS softwares.
(6) interface configuration：Enter line interface configuration to controlled device and feedback signal, make the simulation of real-time emulation system controlled
Object is set up with control system and is contacted.
(7) programmable signal collection converting system 2 is configured：According to the demand of control system, configuration programmable signal collection
The AI/AO/DI/DO passages of converting system 2, the system input and output of making can be recognized by PC.
(8) start test, test result is derived after terminating：By the form of oscillogram or text document by test result
Derive.
As shown in figure 3, a kind of test case of representative heat-cool CCHP analogue system.
Analogue system as shown in Figure 3 is set up in TRNSYS.
Hourly load module 1-2 of the cold and hot input supply of cooling, heating and electrical powers of electric load 5 analogue system 1 of user,
According to the device parameter of fielded system, the device parameter in analogue system is set, with the standard for ensureing to emulate
True property.
According to the analogue system cycle of operation that input interface module and output interface module read, control to be measured is set
The controlling cycle of system 3.
The signals such as flow, the temperature of supply of cooling, heating and electrical powers analogue system 1, gather converting system 2 and transmit by programmable signal
To control system 3.Simultaneously the control signal of valve, water pump etc. is gathered converting system 2 by control system 3 by programmable signal
Input supply of cooling, heating and electrical powers analogue system 1 so that valve, water pump are controlled.
The Real time displaying figure checked on PC, observes whether examining system meets the requirements according to oscillogram.Fig. 4, Fig. 5 are
Test result figure.Refrigerating capacity, heating capacity and refrigeration duty, thermic load are identical, and through calculating capacity usage ratio 75% is all higher than,
Prove that control system can preferably control the cogeneration cooling heating system for emulating.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (8)
1. a kind of cooling heating and power generation system test platform, is characterized in that, including supply of cooling, heating and electrical powers analogue system, programmable signal are adopted
Collection converting system and control system；
The supply of cooling, heating and electrical powers analogue system, for building the virtual controlled device of cooling heating and power generation system in PC；
The programmable signal gathers converting system, for supply of cooling, heating and electrical powers analogue system to be communicated with control system, root
Analog-to-digital conversion is carried out to it according to the control signal of control system and signal transacting is sent to supply of cooling, heating and electrical powers analogue system, while will
The feedback signal of supply of cooling, heating and electrical powers analogue system feeds back to control system by communication interface；
The control system, for according to the controlled device of supply of cooling, heating and electrical powers analogue system, sending control command；
The supply of cooling, heating and electrical powers control system test platform, using simulation step length coordination technique, is connect by input interface and output
Mouth obtains the real time that step-length is once simulated in the computing of supply of cooling, heating and electrical powers analogue system, assigns it to control system as during sampling
Between, in a step-length, analogue system is run a field control system and is also run once.
2. a kind of cooling heating and power generation system test platform as claimed in claim 1, is characterized in that, the supply of cooling, heating and electrical powers emulation
System includes system simulation module, hourly load module, input interface module and output interface module, the system simulation module
TRNSYS softwares are simulated based on instantaneous system, cooling heating and power generation system is built；
The hourly load module, for analog subscriber load；
The input interface module, the control signal of converting system is gathered by reading in programmable signal, with the shape that module is exported
The operation of each equipment of formula control supply of cooling, heating and electrical powers analogue system, the output signal of supply of cooling, heating and electrical powers analogue system is then by exporting
Interface module writes a signal to programmable signal collection converting system in the form of signal output.
3. a kind of cooling heating and power generation system test platform as claimed in claim 2, is characterized in that, the load of the customer charge
Data both can be real user's history load data, or Energyplus or Trnbuild software emulation numbers
According to.
4. a kind of cooling heating and power generation system test platform as claimed in claim 1, is characterized in that, the programmable signal collection
Converting system includes FPGA main control modules, signal acquisition module, signaling conversion circuit and signal processing circuit, signal acquisition module
By the transmission or analog signal of collection to signaling conversion circuit corresponding with analog quantity, the corresponding signaling conversion circuit of analog quantity is to simulation
Amount is sent to signal processing circuit after being changed, and signal processing circuit is connected with FPGA main control modules；
The digital quantity of collection is sent to signaling conversion circuit corresponding with digital quantity, the corresponding letter of digital quantity by signal acquisition module
Number change-over circuit is connected with FPGA main control modules.
5. a kind of cooling heating and power generation system test platform as claimed in claim 4, is characterized in that, described corresponding with analog quantity
Signaling conversion circuit uses isolation transforming circuit, including binary channels operational amplifier OP297.
6. a kind of cooling heating and power generation system test platform as claimed in claim 4, is characterized in that, described corresponding with digital quantity
Signaling conversion circuit uses optical coupling isolation circuit, including optical coupling isolator TLP521.
7. a kind of cooling heating and power generation system test platform as claimed in claim 4, is characterized in that, the signal processing circuit is
Kinetis K60 controllers, the analog signalses to gathering are AD converted and data processing, then Jing SPI interfaces will gather number
According to transmitting to FPGA main control modules.
8. using a kind of method of testing of the cooling heating and power generation system test platform as described in claim 1-7 is arbitrary, its feature
It is to comprise the following steps：
Step one：Corresponding test case is selected according to actual control system and is imported in TRNSYS softwares, set up cold and hot Electricity Federation
For analogue system；
Step 2：Real-time Load is input into：User side cool and thermal power demand is imported into the hourly load mould of supply of cooling, heating and electrical powers analogue system
Block；
Step 3：Device parameter is set：According to the actual operation parameters data of equipment in supply of cooling, heating and electrical powers analogue system, to cold and hot
Device parameter in CCHP analogue system is set；
Step 4：By the actual operation time of supply of cooling, heating and electrical powers analogue system, control system is assigned to as the sampling time；At one
In step-length, analogue system is run a field control system and is also run once；
Control system is assigned to the time once used is emulated, as the computing step-length of control system.Such analogue system
Once, control system is also run once for operation；
Step 5：The time started and end time of experiment simulation are set in TRNSYS softwares；
Step 6：Interface is configured：Line interface configuration is entered to the controlled device and feedback signal of supply of cooling, heating and electrical powers analogue system, is made cold
The simulation controlled device of cogeneration analogue system is set up with control system and is contacted；
Step 7：Programmable signal collection converting system configuration：According to the demand of control system, configuration programmable signal collection turns
Change the AI/AO/DI/DO passages of system, make programmable signal collection converting system input and output can be by supply of cooling, heating and electrical powers
The PC identification of analogue system；
Step 8：Start test, test derives test result after terminating：To be tested by the form of oscillogram or text document
As a result derive.
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| CN109962154B (en) * | 2019-03-20 | 2020-09-01 | 山东大学 | High-power thermoelectric conversion module and thermoelectric conversion system |
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