CN105743080A - Direct current microgrid control policy research and development platform and operating method therefor - Google Patents
Direct current microgrid control policy research and development platform and operating method therefor Download PDFInfo
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- 238000012827 research and development Methods 0.000 title abstract 2
- 238000011017 operating method Methods 0.000 title 1
- 238000011160 research Methods 0.000 claims abstract description 28
- 238000011161 development Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000011217 control strategy Methods 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract 2
- 238000012913 prioritisation Methods 0.000 description 8
- 238000011105 stabilization Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- H02J3/383—
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02P80/14—District level solutions, i.e. local energy networks
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- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
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Abstract
The invention provides a direct current microgrid control policy research and development platform. The platform is characterized by comprising a direct current microgrid bus, an energy system and a virtual controller system, wherein the energy system is connected with the direct current microgrid bus; the energy system comprises a photovoltaic power generation system and/or a wind power generation system, and/or a storage battery system; and the virtual controller system is connected with the energy system and capable of controlling the energy system. The original protection system of the microgrid is skillfully kept, so that the cost is saved; meanwhile, a safe operation can be ensured without affecting the structure of the existing microgrid in operation; a good platform is provided to the research of the direct current microgrid; and in addition, many new control algorithms and policies can be effectively added to the microgrid system in time through the virtual controller to carry out partial experiments without affecting the existing operating states of the microgrid, so that the input cost can be lowered.
Description
Technical field
The present invention relates to the network system comprising multiclass distributed energy, specifically, relate to a kind of direct-current grid control strategy research/development platform and method of work thereof.
Background technology
Along with the level of development of global economy and science and technology improves constantly, mankind's demand also sharp increase to the energy.Meanwhile, the exhaustive exploitation of traditional energy, the problem such as environmental pollution and greenhouse effect also causes the concern that regenerative resource is developed by society.In recent years, the popularization of the distributed generation technology supplied using the clean energy resource such as wind energy, solar energy as main energetic has also become the development trend of power industry.But major part regenerative resource, affected by a natural relatively big, directly it is connected with bulk power grid and voltage peak regulation and security of system can be impacted.In order to reduce the negative influence owing to distributed power source causes, retaining again its original advantage, therefore the concept of microgrid is suggested simultaneously.
Microgrid has direct current, exchange, alternating current-direct current three kinds of power-supplying forms of mixing, and wherein direct-current micro-grid has: controls simple, is conducive to the integration of each new forms of energy power supply in microgrid, reduces and major network is affected；It is effectively reduced quantity and the capacity of electronic power convertor, reduces cost and reduce loss；Direct-current micro-grid is absent from the advantage such as frequency and the problem such as power stability, reactive circular power flow.Now built laboratory and demonstrative project, provide lot of experimental data for aspects such as the energy management of power quality problem and microgrid and operational managements.
But the demonstration project now put into operation, the controller adopted is fixing maturation all, and complex distribution, more advanced control algolithm and strategy are difficult to realize in such systems, greatly limit the motility of experimental facilities, reduce and control systematic difference scope with new algorithm, so this problem needs solution badly.
Distributed power source for the medium and small scope of direct current micro-grid system, set up Virtual Controller experiment porch, test in subrange, experiment porch requires: 1 can be applied to each distributed power source net-connected controller of microgrid flexibly, including maximal power tracing controller, DC/DC voltage-stabilizing controller etc.；2 in adding Virtual Controller process, it is impossible to damages the structure and the device that have now run microgrid.
Summary of the invention
It is an object of the invention to overcome the weak point of above-mentioned conventional art, a kind of direct-current grid control strategy research/development platform and method of work thereof are provided, its objective is the control algolithm studied is implanted to Virtual Controller, it is incorporated in direct-current grid by the open interface of direct-current grid, to verify the feasibility of this algorithm.
The technical scheme is that
Direct-current grid control strategy research/development platform, it is characterised in that: include
Direct-current micro-grid bus；
Energy resource system, is connected with direct-current micro-grid bus, including photovoltaic generating system and/or wind generator system and/or battery system；
Virtual controller system, is connected with energy resource system and can it be controlled.
A kind of concrete prioritization scheme, virtual controller system includes host, target machine, emulator, data collecting card and hardware control, host is connected with target machine, target machine is connected with data collecting card, data collecting card is connected with hardware control, and hardware control is connected with host by emulator.
Virtual controller system, based on xPCTarget platform, is built virtual controlling hardware-in-loop simulation system, by Virtual Controller, system is controlled, it is achieved the research to algorithm feasibility；Virtual Controller is made up of host and target machine, host carries designed Matlab/Simulink algorithm model, the model of C code is downloaded in target machine by ICP/IP protocol by host, and target machine carries high-speed data acquisition card, carries out Real Data Exchangs with controlled system in kind.
A kind of concrete prioritization scheme, also includes level shifting circuit, and level shifting circuit is connected with hardware control and data collecting card respectively.
As interface circuit, it act as level conversion to level shifting circuit.
A kind of concrete prioritization scheme, energy resource system includes controller and virtual controller interface, and controller is connected with virtual controller interface, and virtual controller interface is connected with virtual controller system.
A kind of concrete prioritization scheme, controller includes maximal power tracing controller and/or voltage-stabilizing controller.
A kind of concrete prioritization scheme, also includes function selector circuit, and function selector circuit is connected with controller.
The method generating the PWM duty cycle changing converter switches is determined by function selector circuit.
A kind of concrete prioritization scheme, photovoltaic generating system includes MPPT controller and/or chopper stabilivolt DC/DC controller.
Owing to the electric pressure of designed direct-current micro-grid is 400V, if the output voltage of photovoltaic array is not controlled and direct grid-connected, direct-current micro-grid voltage can be caused to be unable to maintain that the magnitude of voltage of defined.In order to make the output voltage stabilization of the photovoltaic array interface circuit between 400V, photovoltaic array and direct-current micro-grid adopt the structure of DC/DC circuit in parallel of two-stage.Wherein the effect of first order DC/DC circuit is to realize mating of load and photovoltaic array internal resistance by controlling its dutycycle, thus realizing maximal power tracing；The effect of second level DC/DC circuit is then boosted by the output voltage of first order DC/DC circuit so that it is reach 400V, it is achieved photovoltaic array is grid-connected with direct-current micro-grid；
MPPT main circuit is DC/DC circuit, its function is to realize the maximal power tracing of photovoltaic cell, because the power output of photovoltaic cell is subject to the impact of intensity of sunshine, temperature, load, in order to effectively utilize photovoltaic cell it is necessary to carry out maximal power tracing MPPT-Maxi-mumPowerPointTracking when limiting.The I-V characteristic of solar-energy photo-voltaic cell has non-linear, and we cannot change ambient temperature, intensity of sunshine, only by changing dutycycle thus regulating extraneous load to realize maximal power tracing.
A kind of concrete prioritization scheme, wind generator system includes AC/DC controller and/or chopper stabilivolt DC/DC controller.
Owing to the electric pressure of designed direct-current micro-grid is 400V, if the output voltage of wind-driven generator is not controlled and direct grid-connected, direct-current micro-grid voltage can be caused to be unable to maintain that the magnitude of voltage of defined.In order to make wind-driven generator Maximum Power Output and the output voltage stabilization interface circuit between 400V, wind-driven generator and direct-current micro-grid adopt two-stage..Wherein the effect of first order AC/DC circuit is the AC conversion exported by wind-driven generator is unidirectional current, and realizes maximal power tracing by controlling dutycycle；The effect of second level DC/DC circuit is then boosted by the output voltage of first order AC/DC circuit so that it is reach 400V, it is achieved wind-driven generator is grid-connected with direct-current micro-grid.
The function of AC/DC main circuit is to realize the maximal power tracing of wind-driven generator, because the output of wind-driven generator and wind speed, propeller pitch angle, wind speed round is all relevant.In order to effectively utilize wind-driven generator it is necessary to carry out maximal power tracing when limiting, the situation of change according to wind wheel speed and output；By changing the dutycycle of AC/DC main circuit, changing equivalent output resistance and then the output electric current of change electromotor, making the electromagnetic torque respective change of electromotor, thus changing wind wheel speed, it is achieved maximal power tracing.
A kind of concrete prioritization scheme, battery system includes two-way DC/DC controller.
Owing to the effect of peak load shifting is played in the operation of micro-capacitance sensor by energy-storage module, according to the different conditions that microgrid runs, carrying out in time consuming and supplementing, therefore the flow of power of energy-storage module is two-way；And energy-storage module output electric energy is DC form, therefore adopts two-way DC/DC main circuit.When busbar voltage is too low, lead-acid battery needs electric discharge, the disappearance of replenishment system power.Owing to accumulator voltage grade is well below busbar voltage, two-way DC/DC main circuit need to be operated in Boost pattern；If otherwise busbar voltage is too high, the unnecessary power of system to charge for accumulator, and two-way DC/DC main circuit need to be operated in Buck pattern.
The method of work of direct-current grid control strategy research/development platform, it is characterised in that selected following two mode by function selector circuit:
Ripe algorithm controls virtual controller system built-in in mode one, selection control runs；
Mode two, selection control receive the instruction of virtual controller system, the algorithm controls virtual controller system run in virtual controller system run.
The present invention retains the original protection system of microgrid dexterously, saves cost；After Virtual Controller is linked into system, does not affect the structure now having run microgrid, and can ensure that safe operation；By each virtual controller interface, Virtual Controller can convenient with each distributed power source be connected, and increases the motility of Virtual Controller；Utilize function selector circuit to make distributed power source have multiple progress control method, provide good platform to the research of direct-current micro-grid；Much new control algolithm and strategy can be added in micro-grid system effectively and timely by Virtual Controller, test in local, do not affect the state that microgrid has now run, reduce input cost.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of direct-current grid control strategy research/development platform of the present invention；
Fig. 2 is the structural representation of photovoltaic generating system；
Fig. 3 is the structural representation of wind generator system；
Fig. 4 is the structural representation of battery system；
Fig. 5 is the structural representation of virtual controller system；
Fig. 6 is the population structure of communication；
Fig. 7 is level shifting circuit figure.
Detailed description of the invention
Embodiment: as shown in Figures 1 to 7, direct-current grid control strategy research/development platform, including
Direct-current micro-grid bus；
Multiclass distributed energy resource system, including photovoltaic generating system 1, wind generator system 2 and battery system 3, photovoltaic generating system 1, wind generator system 2 and battery system 3, and is connected with direct-current micro-grid bus respectively；
Virtual controller system 4, is connected with the control part in photovoltaic generating system 1, wind generator system 2 and battery system 3 respectively.
As shown in Figure 5 and Figure 6, virtual controller system 4 includes Virtual Controller 13 and interface circuit 14.Concrete, including host 401, target machine 404, emulator 402, data collecting card 405, hardware control 403 and communication part, host 401 is connected with target machine 404, target machine 404 is connected with data collecting card 405, data collecting card 405 is connected with hardware control 403, and hardware control 403 is connected with host 401 by emulator 402.
Host 401 adopts ordinary PC, and operating system adopts windows operating system, sets up the virtual controlling algorithm model based on Matlab/Simulink in host 401；
Target machine 404 adopts high speed industrial computer, uses USB flash disk and is started by DOS mode, is loaded into xPC real-time kernel, runs C programmer；
Hardware control 403 adopts DSP2812 hardware control；
Data collecting card 405 selects the PCI-6503 high-speed data acquisition card that NI company produces.
Platform is with xPCTarget for core, realize dual-machine communication, compiler uses visual c++ 6.0, the MODEL C code that in Matlab/Simulink, RTW module will be set up, and it is loaded in target machine 404, between two machines, communication part uses ICP/IP protocol, and the model of C code is downloaded in target machine 404 by host 401 by ICP/IP protocol, and the xPC exclusive data capture card being arranged on target machine 404 utilizes the mode of electric resistance partial pressure to be connected with DSP hardware controller 403.The dual-machine communication agreement adopted under experimental situation is TCP/IP communications protocol.Host 401 is connected on same router can to realize both connecting physically with the network interface card of target machine 404.
The present embodiment is verified the DSP2812 hardware control 403 actual controller as DC/DC module.Verify under 401 matlab emulation platforms of host that feasible DC/DC control strategy Program transformation becomes C code to download in Virtual Controller, use data acquisition and level shifting circuit by the electric current of DC/DC circuit, Voltage Feedback to Virtual Controller, Virtual Controller calculates the output of DC/DC controller, send actual controller back to then through data acquisition and level shifting circuit, DC/DC controller realize the control to DC/DC module.The voltage that DSP2812 hardware control 403 can bear is+3.3V, and the voltage of data collecting card output is+5V, need to adopt level shifting circuit.
As it is shown in fig. 7, also include level shifting circuit, level shifting circuit is connected with hardware control 403 and data collecting card 405 respectively.Level shifting circuit realizes the conversion between+3.3V to+5V.
As in figure 2 it is shown, photovoltaic generating system 1 includes photovoltaic battery array group 5, maximal power tracing controls system 6 and voltage-stabilization control system 7.
Photovoltaic battery array group 5 includes photovoltaic cell 15；Maximal power tracing controls system 6 and includes MPPT main circuit 16, MPPT controller 19, drive circuit 20, virtual controller interface 18, function selector circuit 17；Voltage-stabilization control system 7 includes chopper stabilivolt DC/DC main circuit 21, chopper stabilivolt DC/DC controller 24, drive circuit 25, virtual controller interface 23, function selector circuit 22；
Photovoltaic cell 15, MPPT main circuit 16, chopper stabilivolt DC/DC main circuit 21 are connected with direct-current micro-grid bus, MPPT controller 19, drive circuit 20 are connected with MPPT main circuit 16 respectively, MPPT controller 19 and drive circuit 20 connect, chopper stabilivolt DC/DC controller 24 and drive circuit 25 are connected with chopper stabilivolt DC/DC main circuit 21 respectively, chopper stabilivolt DC/DC controller 24 and drive circuit 25 connect, and virtual controller interface 18, function selector circuit 17 are connected with MPPT controller 19 respectively；Virtual controller interface 23 and function selector circuit 22 are connected with chopper stabilivolt DC/DC controller 24 respectively.
The method of work of direct-current grid control strategy research/development platform, is selected in the following manner by function selector circuit:
Wherein:
The method generating the PWM duty cycle changing converter switches is determined by function selector circuit 17:
Mode one: adopt the ripe control algolithm that MPPT controller 19 is built-in；
Mode two: received the instruction of Virtual Controller by open interface, is realized control by the control algolithm run in Virtual Controller, to verify the feasibility studying algorithm in Virtual Controller.
Mode two specific implementation method is as follows: voltage, current signal are passed to Virtual Controller 13 through MPPT controller 19, virtual controller interface 18, interface circuit 14 by MPPT main circuit 16.The pwm signal that Virtual Controller 13 produces through host Matlab/Simulink algorithm model passes to drive circuit 20 through interface circuit 14, virtual controller interface 18, MPPT controller 19.After signal is amplified by drive circuit 20, signal is passed to MPPT main circuit 16, it is achieved the control to its dutycycle, reach the purpose of maximal power tracing, to verify the feasibility of Virtual Controller 13 in-house research algorithm.
Chopper stabilivolt main circuit 21 is second level DC/DC circuit, and the output of uncontrollable direct current is become controlled direct current output by second level DC/DC changer, by controlling the output voltage being switched on or off stable photovoltaic array of switching device.The method generating the PWM duty cycle changing converter switches is determined by function selector circuit 22:
Mode one: adopt the ripe control algolithm that chopper stabilivolt DC/DC controller 24 is built-in；
Mode two: received the instruction of Virtual Controller by open interface, is realized control by the control algolithm run in Virtual Controller, to verify the feasibility studying algorithm in Virtual Controller.
Mode two specific implementation method is as follows: voltage, current signal are passed to Virtual Controller 13 through chopper stabilivolt DC/DC controller 24, virtual controller interface 23, interface circuit 14 by chopper stabilivolt main circuit 21.The pwm signal that Virtual Controller 13 produces through host Matlab/Simulink algorithm model passes to drive circuit 25 through interface circuit 14, virtual controller interface 23, chopper stabilivolt DC/DC controller 24.After signal is amplified by drive circuit 25, signal is passed to chopper stabilivolt main circuit 21, it is achieved the control to its dutycycle, reach the grid-connected purpose of voltage stabilizing, to verify the feasibility of Virtual Controller 13 in-house research algorithm.
As it is shown on figure 3, wind generator system 2 includes wind power generating set 8, maximal power tracing controls system 9 and voltage-stabilization control system 10；
Wind power generating set 8 includes wind-driven generator 26；Maximal power tracing controls system 9 and includes AC/DC main circuit 27, AC/DC controller 30, drive circuit 31, virtual controller interface 29, function selector circuit 28；Voltage-stabilization control system 10 includes chopper stabilivolt DC/DC main circuit 32, chopper stabilivolt DC/DC control/35, drive circuit 36, virtual controller interface 34, function selector circuit 33；
Wind-driven generator 26, AC/DC main circuit 27 and chopper stabilivolt DC/DC main circuit 32 are connected with direct-current micro-grid bus respectively, AC/DC controller 30, drive circuit 31 is connected with AC/DC main circuit 27 respectively, AC/DC controller 30 and drive circuit 31 connect, chopper stabilivolt DC/DC control/35 and drive circuit 36 are connected with chopper stabilivolt DC/DC main circuit 32 respectively, chopper stabilivolt DC/DC control/35 and drive circuit 36 connect, virtual controller interface 29 and function selector circuit 28 are connected with AC/DC controller 30 respectively, virtual controller interface 34 and function selector circuit 33 control/35 with chopper stabilivolt DC/DC respectively and are connected.
The method of work of direct-current grid control strategy research/development platform, is selected in the following manner by function selector circuit:
Wherein:
The method generating the PWM duty cycle changing converter switches is determined by function selector circuit 28:
Mode one: adopt the ripe control algolithm that AC/DC controller 30 is built-in；
Mode two: received the instruction of Virtual Controller by open interface, is realized control by the control algolithm run in Virtual Controller, to verify the feasibility studying algorithm in Virtual Controller.
Mode two specific implementation method is as follows: voltage, current signal are passed to Virtual Controller 13 through AC/DC controller 30, virtual controller interface 29, interface circuit 14 by AC/DC main circuit 30.The pwm signal that Virtual Controller 13 produces through host Matlab/Simulink algorithm model passes to drive circuit 31 through interface circuit 14, virtual controller interface 29, AC/DC controller 30.After signal is amplified by drive circuit 31, signal is passed to AC/DC main circuit 27, it is achieved the control to its dutycycle, reach the purpose of maximal power tracing, to verify the feasibility of Virtual Controller 13 in-house research algorithm.
Chopper stabilivolt main circuit 32 is second level DC/DC circuit, and the output of uncontrollable direct current is become controlled direct current output by second level DC/DC changer, by controlling the output voltage being switched on or off constant wind power generator of switching device.The method generating the PWM duty cycle changing converter switches is determined by function selector circuit 33:
Mode one: adopt the ripe control algolithm that chopper stabilivolt DC/DC controller 35 is built-in；
Mode two: received the instruction of Virtual Controller by open interface, is realized control by the control algolithm run in Virtual Controller, to verify the feasibility studying algorithm in Virtual Controller.
Mode two specific implementation method is as follows: voltage, current signal are passed to Virtual Controller 13 through chopper stabilivolt DC/DC controller 35, virtual controller interface 34, interface circuit 14 by chopper stabilivolt main circuit 32.The pwm signal that Virtual Controller 13 produces through host Matlab/Simulink algorithm model passes to drive circuit 36 through interface circuit 14, virtual controller interface 34, chopper stabilivolt DC/DC controller 35.After signal is amplified by drive circuit 36, signal is passed to chopper stabilivolt main circuit 32, it is achieved the control to its dutycycle, reach the grid-connected purpose of voltage stabilizing, to verify the feasibility of Virtual Controller 13 in-house research algorithm.
As shown in Figure 4, battery system 3 includes discharge and recharge voltage-stabilization control system 12 and accumulator battery 11；
Accumulator battery 11 includes accumulator 37；Discharge and recharge voltage-stabilization control system 12 includes two-way DC/DC circuit 38, two-way DC/DC controller 41, drive circuit 42, function selector circuit 39, virtual controller interface 40；
Accumulator 37 and two-way DC/DC circuit 38 are connected with direct-current micro-grid bus respectively, two-way DC/DC controller 41 and drive circuit 42 are connected with two-way DC/DC circuit 38 respectively, two-way DC/DC controller 41 and drive circuit 42 connect, and function selector circuit 39 and virtual controller interface 40 are connected with two-way DC/DC controller 41 respectively.
The method of work of direct-current grid control strategy research/development platform, is selected in the following manner by function selector circuit:
Wherein:
The method generating the PWM duty cycle changing converter switches is determined by function selector circuit 39:
Mode one: adopt the ripe control algolithm that two-way DC/DC controller 41 is built-in；
Mode two: received the instruction of Virtual Controller by open interface, is realized control by the control algolithm run in Virtual Controller, to verify the feasibility studying algorithm in Virtual Controller.
Mode two specific implementation method is as follows: voltage, current signal are passed to Virtual Controller 13 through two-way DC/DC controller 41, virtual controller interface 40, interface circuit 14 by two-way DC/DC main circuit 38.The pwm signal that Virtual Controller 13 produces through host Matlab/Simulink algorithm model passes to drive circuit 42 through interface circuit 14, virtual controller interface 40, two-way DC/DC controller 41.After signal is amplified by drive circuit 42, signal is passed to two-way DC/DC main circuit 38, it is achieved the control to its dutycycle, reach the grid-connected purpose of voltage stabilizing, to verify the feasibility of Virtual Controller 13 in-house research algorithm.
Claims (10)
1. direct-current grid control strategy research/development platform, it is characterised in that: include
Direct-current micro-grid bus；
Energy resource system, is connected with direct-current micro-grid bus, including photovoltaic generating system and/or wind generator system and/or battery system；
Virtual controller system, is connected with energy resource system and can it be controlled.
2. direct-current grid control strategy research/development platform according to claim 1, it is characterized in that: virtual controller system includes host, target machine, emulator, data collecting card and hardware control, host is connected with target machine, target machine is connected with data collecting card, data collecting card is connected with hardware control, and hardware control is connected with host by emulator.
3. direct-current grid control strategy research/development platform according to claim 1 and 2, it is characterised in that: also including level shifting circuit, level shifting circuit is connected with hardware control and data collecting card respectively.
4. direct-current grid control strategy research/development platform according to claim 1 and 2, it is characterised in that: energy resource system includes controller and virtual controller interface, and controller is connected with virtual controller interface, and virtual controller interface is connected with virtual controller system.
5. direct-current grid control strategy research/development platform according to claim 4, it is characterised in that: controller includes maximal power tracing controller and/or voltage-stabilizing controller.
6. direct-current grid control strategy research/development platform according to claim 4, it is characterised in that: also including function selector circuit, function selector circuit is connected with controller.
7. direct-current grid control strategy research/development platform according to claim 1 and 2, it is characterised in that: photovoltaic generating system includes MPPT controller and/or chopper stabilivolt DC/DC controller.
8. direct-current grid control strategy research/development platform according to claim 1 and 2, it is characterised in that: wind generator system includes AC/DC controller and/or chopper stabilivolt DC/DC controller.
9. direct-current grid control strategy research/development platform according to claim 1 and 2, it is characterised in that: battery system includes two-way DC/DC controller.
10. the method for work of direct-current grid control strategy research/development platform, it is characterised in that selected following two mode by function selector circuit:
Ripe algorithm controls virtual controller system built-in in mode one, selection control runs；
Mode two, selection control receive the instruction of virtual controller system, the algorithm controls virtual controller system run in virtual controller system run.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610285540.8A CN105743080A (en) | 2016-05-03 | 2016-05-03 | Direct current microgrid control policy research and development platform and operating method therefor |
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| CN201610285540.8A CN105743080A (en) | 2016-05-03 | 2016-05-03 | Direct current microgrid control policy research and development platform and operating method therefor |
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| CN113793544A (en) * | 2021-09-03 | 2021-12-14 | 河南省高压电器研究所有限公司 | Experimental system for photovoltaic system control algorithm |
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| CN203561844U (en) * | 2013-11-06 | 2014-04-23 | 国家电网公司 | Digital and physical hybrid simulation platform based on NI-PXI distributed new energy power generation system |
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| US20130154564A1 (en) * | 2008-02-01 | 2013-06-20 | Ricoh Company, Ltd. | Semiconductor device for protecting secondary battery, battery pack, and electronic device using same |
| CN203561844U (en) * | 2013-11-06 | 2014-04-23 | 国家电网公司 | Digital and physical hybrid simulation platform based on NI-PXI distributed new energy power generation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113793544A (en) * | 2021-09-03 | 2021-12-14 | 河南省高压电器研究所有限公司 | Experimental system for photovoltaic system control algorithm |
| CN113793544B (en) * | 2021-09-03 | 2023-09-22 | 河南省高压电器研究所有限公司 | Experimental system of photovoltaic system control algorithm |
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