CN204046193U - A kind of mixed type micro-grid system - Google Patents
A kind of mixed type micro-grid system Download PDFInfo
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- CN204046193U CN204046193U CN201420496953.7U CN201420496953U CN204046193U CN 204046193 U CN204046193 U CN 204046193U CN 201420496953 U CN201420496953 U CN 201420496953U CN 204046193 U CN204046193 U CN 204046193U
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- subnet
- reversible transducer
- battery unit
- mixed type
- energy
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The utility model discloses a kind of mixed type micro-grid system, comprise micro-capacitance sensor female net, renewable energy system, AC load and electric line, micro-capacitance sensor female net, renewable energy system and AC load are connected on electric line, wherein: the female net of micro-capacitance sensor comprises one or more auxiliary branch further, and each auxiliary branch comprises accessory power supply electric power system, reversible transducer and the first battery unit; In each auxiliary branch, the alternating current that accessory power supply electric power system exports is delivered to first of reversible transducer and exchanges end, and second of reversible transducer the interchange end is connected with electric line, and the first battery unit is connected with the accumulator terminal of reversible transducer.Enforcement the beneficial effects of the utility model are, with photovoltaic, wind power generation for main energy sources form, there is provided electric energy to load and excess energy is stored in battery unit, when regenerative resource and battery energy storage undersupply, providing power supply by accessory power supply electric power system.
Description
Technical field
The utility model relates to micro-capacitance sensor technical field, more particularly, relates to a kind of mixed type micro-grid system.
Background technology
At present, National Energy Board, in order to solve the electrical problem on the Northwest and island, coastal waters, adopts diesel engine to power usually.But adopting diesel engine to power big for environment pollution, power supply quality is poor, and efficiency utilizes low, and for remote districts and region, island diesel transport inconvenience, often by weather effect, diesel oil supply not in time, often occurs the situation of power-off.
Along with country " 12 " planning is implemented further, photovoltaic generation, as the main new forms of energy of one, is just widely used, but for taking photovoltaic generation as the new forms of energy access diesel engine electrical network of representative, operation of power networks can be caused very unstable, and control complicated.
Utility model content
The technical problems to be solved in the utility model is, will take photovoltaic generation as the new forms of energy access diesel engine electrical network of representative, and cause the defect that operation of power networks is very unstable, provide a kind of mixed type micro-grid system for the above-mentioned of prior art.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of mixed type micro-grid system, comprise micro-capacitance sensor female net, renewable energy system, AC load and electric line, described micro-capacitance sensor female net, renewable energy system and AC load are connected on described electric line, wherein: the female net of described micro-capacitance sensor comprises one or more auxiliary branch further, and auxiliary branch described in each comprises accessory power supply electric power system, reversible transducer and the first battery unit; In each auxiliary branch, the alternating current that described accessory power supply electric power system exports is delivered to first of reversible transducer and exchanges end, and second of described reversible transducer the interchange end is connected with described electric line, described first battery unit is connected with the accumulator terminal of described reversible transducer.
In above-mentioned mixed type micro-grid system, described mixed type micro-grid system also comprises energy accumulation current converter and the second battery unit, wherein: the DC terminal of described energy accumulation current converter is connected with described second battery unit, and the interchange end of described energy accumulation current converter is connected with described electric line.
In above-mentioned mixed type micro-grid system, described accessory power supply electric power system is electrical network/diesel generator system/gas power generator system.
In above-mentioned mixed type micro-grid system, described renewable energy system comprises renewable energy power generation module and inverter, wherein: the direct current that described renewable energy power generation module exports is transported on described electric line through described inverter.
In above-mentioned mixed type micro-grid system, described renewable energy power generation module is photovoltaic generation/wind power generation.
In above-mentioned mixed type micro-grid system, described mixed type micro-grid system also comprises at least one dilatation subnet unit, each dilatation subnet unit is connected on described electric line, and each dilatation subnet unit comprises one or more dilatation subnet be connected in series, wherein: each dilatation subnet comprises further:
Subnet reversible transducer;
Subnet first battery unit, described subnet first battery unit is connected with the accumulator terminal of described subnet reversible transducer;
Subnet AC load, described subnet AC load is connected with the ac output end of described subnet reversible transducer;
Subnet renewable energy system, described subnet renewable energy system is connected with the ac output end of described subnet reversible transducer and described subnet AC load respectively.
In above-mentioned mixed type micro-grid system, each dilatation subnet also comprises: subnet energy accumulation current converter and subnet second battery unit, and in each dilatation subnet, the interchange end of described subnet energy accumulation current converter is connected with the ac output end of described subnet reversible transducer, and the DC terminal of described subnet energy accumulation current converter is connected with described subnet second battery unit.
Implement mixed type micro-grid system of the present utility model, there is following beneficial effect: based on reversible transducer, electrical network or diesel generator system, gas power generator system is driving source, photovoltaic generation or wind power generation and the first battery unit energy storage inversion are main new forms of energy form, solve the access of the new forms of energy such as photovoltaic generation, diesel generator system access (for subsequent use), for the problem of the micro-capacitance sensor application such as electrical stability, go for various areas without electricity, small hydro generating power supply area, diesel engine generator is powered regional power supply, meet the basic electricity of the people of northwest without bulk power grid area and region, island, improve the quality of life of people.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the schematic diagram of the utility model mixed type micro-grid system embodiment;
Fig. 2 is the energy flow diagram of the mixed type micro-grid system taking reversible transducer as core;
Fig. 3 is the schematic diagram carrying out multi-tier based on Fig. 1.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, for the schematic diagram of the utility model mixed type micro-grid system embodiment, this mixed type micro-grid system with renewable energy system if photovoltaic generation, wind power generation etc. are main powersupply system, electrical network/diesel generator system/gas power generator system is back-up source electric power system, and in conjunction with battery unit energy storage technology, meet the basic electricity of the people of northwest without bulk power grid area and region, island, improve the quality of life of people.Particularly, this mixed type micro-grid system comprises micro-capacitance sensor female net 10, renewable energy system 20, AC load 30 and electric line 40, wherein: the female net 10 of micro-capacitance sensor, renewable energy system 20, AC load 30 are connected on electric line 40.Especially, the female net 10 of micro-capacitance sensor comprises again one or more auxiliary branch 100 further, and each auxiliary branch 100 comprises accessory power supply electric power system 101, reversible transducer 102 and the first battery unit 103.
In the present embodiment, accessory power supply electric power system is preferably electrical network/diesel generator system, gas power generator system, the alternating current that accessory power supply electric power system 101 exports is delivered to first of the reversible transducer 102 of place auxiliary branch and exchanges end, second of reversible transducer 102 exchanges end and is connected with electric line 40, its accumulator terminal is connected with the first battery unit 103 of place auxiliary branch simultaneously, and all first battery units 103 form batteries.Above-mentioned reversible transducer 102 converts the alternating current that electrical network/diesel generator system/gas power generator system exports to direct current and is stored in the first battery unit 103, meanwhile, converting direct-current power into alternating-current power is delivered on electric line 40 for AC load 30 by reversible transducer 102.Above-mentioned renewable energy system 20 comprises renewable energy power generation module 201 and inverter 202, in the present embodiment, renewable energy power generation module 201 is preferably photovoltaic generation/wind power generation, and its direct current exported is delivered on electric line 40 for AC load 30 after inverter 202 is reverse into alternating current.
Above-mentioned mixed type micro-grid system also comprises energy accumulation current converter 50 and the second battery unit 60, wherein: the DC terminal of energy accumulation current converter 50 is connected with the second battery unit 60, the interchange end of energy accumulation current converter 50 is connected with electric line 40, in the present embodiment, energy accumulation current converter 50 coordinates energy storage as PQ source.
In the present embodiment, reversible transducer adopts IBD100 series reversible transducer, its the first interchange end termination electrical network/diesel generator system, gas power generator system, energy accumulation current converter adopts IES100 series energy accumulation current converter, it coordinates energy storage as PQ source, and renewable energy system adopts conventional photovoltaic generation, wind power generation etc. to provide novel energy.The utility model mixed type micro-grid system is based on reversible transducer, it is as topmost energy flow control appliance, as shown in Figure 2, for taking reversible transducer as the energy flow diagram of micro-grid system of core, each reversible transducer includes a two-way rectifier 11 and a two-way inverter 12, the DC output end of two-way rectifier 11 and the direct-flow input end of two-way inverter 12 are connected respectively to DC bus 13, and DC bus 13 is connected to the first battery unit 103, the ac input end lead-out wire of two-way rectifier 11 is the first ac bus 14, the ac output end lead-out wire of two-way inverter is the second ac bus 15.
Above-mentioned reversible transducer is as energy flow controller topmost in mixed type micro-grid system, by two-way rectifier 11, AC/DC conversion is carried out to the alternating current on the first ac bus 14, then be coupled with the second ac bus 15 after utilizing two-way inverter 12 direct current that two-way rectifier 11 or the first battery unit 103 supply to be carried out DC/AC conversion, realize the first ac bus and the first battery unit, the first battery unit and the second ac bus, the two-way controllable flow of energy between the first ac bus and the second ac bus.Its energy flow mode of operation is specific as follows:
Under the first ac bus 14 powers normal situation, i.e. electrical network or diesel generator system, gas power generator system provides the first ac bus power supply, power supply on first ac bus 14 is carried out AC/DC conversion by two-way rectifier 11, power to the first battery unit 103 and two-way inverter 12, direct current is carried out DC/AC conversion by two-way inverter, be that the second ac bus 15 (being equivalent in FIG be connected to electric line 40) provides electric energy, energy accumulation current converter 50 obtains system command (it is a certain steady state value that this instruction comprises input power) simultaneously, by intelligent power limitation control (namely realizing invariable power input) storage power, see figure middle polyline 1.In addition, when the first battery unit energy is enough, the energy of the first battery unit can be injected on the first ac bus 14 by two-way rectifier 11 by intelligent power limitation control, for the AC load accessed on the first ac bus 14 provides energy, see figure middle polyline 2.When AC load (accessing the AC load 30 of electric line 40 in for Fig. 1) energy demand on access second ac bus 15, also by intelligent power limitation control, energy can be fed on the second ac bus 15 according to system command energy accumulation current converter, unnecessary energy also can be fed on the first ac bus 14 by two-way parallel operation simultaneously, sees figure middle polyline 3.
When the first ac bus 14 abnormal electrical power supply; namely electrical network or diesel generator system, gas power generator system do not work or operation irregularity time; first ac bus 14 of reversible transducer is not powered; its two-way rectifier 11 autostop; two-way inverter 12 uses the energy of the first battery unit to continue as the second ac bus 15 and provides energy; energy accumulation current converter provides electric energy by system command for the second ac bus 15, sees figure middle polyline 4.
As shown in Figure 3, multi-tier can be carried out based on the mixed type micro-grid system in Fig. 1 and build multiple separate subnet, for the AC load of different level of security provides electric energy.Particularly, this mixed type micro-grid system also comprises at least one dilatation subnet unit (not shown), each dilatation subnet unit is connected on electric line 40, and each dilatation subnet unit comprises one or more dilatation subnet 70 be connected in series, in the present embodiment, to comprise two dilatation subnet unit, first dilatation subnet unit comprises a dilatation subnet 70, second dilatation subnet unit comprises three dilatation subnets 70 be connected in series, as shown in the figure, each dilatation subnet 70 comprises again further: subnet reversible transducer 701, the ac input end of subnet reversible transducer 701 is connected with the ac output end of the subnet reversible transducer of a dilatation subnet on electric line 40/, subnet first battery unit 702, subnet first battery unit 702 is connected with the accumulator terminal of subnet reversible transducer 701, subnet AC load 703, subnet AC load 703 is connected with the ac output end of subnet reversible transducer 701, subnet renewable energy system 704, subnet renewable energy system 704 is connected with the ac output end of subnet reversible transducer and subnet AC load respectively.
Subnet reversible transducer 701 in the above-mentioned dilatation subnet be connected with electric line 40 obtains electric energy from electric line 40, the energy storage of subnet first battery unit 702 is given through subnet reversible transducer 701, power to subnet AC load simultaneously, subnet renewable energy system 704 also comprises subnet renewable energy power generation module and subnet inverter, subnet renewable energy power generation module is preferably photovoltaic generation/wind power generation, and its direct current produced powers to after subnet inverter subnet AC load.Preferably, each dilatation subnet also comprises subnet energy accumulation current converter 705 and subnet second battery unit 706, and subnet energy accumulation current converter 705 coordinates energy storage as PQ source, is stored in subnet second battery unit 706 after alternating current being converted to direct current.
In the utility model mixed type micro-grid system, based on reversible transducer, electrical network or diesel power generation system, gas power generator system is driving source, photovoltaic generation or wind power generation and the first battery unit energy storage inversion are main new forms of energy form, solve the access of the new forms of energy such as photovoltaic generation, diesel generator system access (for subsequent use), for the problem of the micro-capacitance sensor application such as electrical stability, go for various areas without electricity, comprise with diesel generation, small power station's generating power supply can directly access, realize with regenerative resource the mixed type of the power supply being main energy sources form from net micro-capacitance sensor topology.
Implement the utility model mixed type micro-grid system, its beneficial effect is as follows:
1) adopt the converter equipment of modern power electronics technology design to build electric line, solve diesel engine power quality poor, the problem of power supply instability;
2) in conjunction with the energy storage technology of battery unit, when solving the new forms of energy accesses such as photovoltaic generation, the problem of unnecessary power storage;
3) support diesel engine access, power supply in support, when the new forms of energy such as photovoltaic generation are inadequate, standby provides power supply, ensures micro-grid system uninterruptable power generation;
4) diesel generator system power supply in support, the electric energy stored is enough, substantially need not opens diesel engine and just greatly can reduce power supply cost in the electric energy that photovoltaic generation or wind power generation etc. provide and battery unit, reduces environmental pollution.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.
Claims (7)
1. a mixed type micro-grid system, it is characterized in that, comprise micro-capacitance sensor female net, renewable energy system, AC load and electric line, described micro-capacitance sensor female net, renewable energy system and AC load are connected on described electric line, wherein: the female net of described micro-capacitance sensor comprises one or more auxiliary branch further, and auxiliary branch described in each comprises accessory power supply electric power system, reversible transducer and the first battery unit; In each auxiliary branch, the alternating current that described accessory power supply electric power system exports is delivered to first of reversible transducer and exchanges end, and second of described reversible transducer the interchange end is connected with described electric line, described first battery unit is connected with the accumulator terminal of described reversible transducer.
2. mixed type micro-grid system according to claim 1, it is characterized in that, described mixed type micro-grid system also comprises energy accumulation current converter and the second battery unit, wherein: the DC terminal of described energy accumulation current converter is connected with described second battery unit, and the interchange end of described energy accumulation current converter is connected with described electric line.
3. mixed type micro-grid system according to claim 1, is characterized in that, described accessory power supply electric power system is electrical network/diesel generator system/gas power generator system.
4. mixed type micro-grid system according to claim 1, it is characterized in that, described renewable energy system comprises renewable energy power generation module and inverter, wherein: the direct current that described renewable energy power generation module exports is transported on described electric line through described inverter.
5. mixed type micro-grid system according to claim 4, is characterized in that, described renewable energy power generation module is photovoltaic generation/wind power generation.
6. mixed type micro-grid system according to claim 1, it is characterized in that, described mixed type micro-grid system also comprises at least one dilatation subnet unit, each dilatation subnet unit is connected on described electric line, and each dilatation subnet unit comprises one or more dilatation subnet be connected in series, wherein: each dilatation subnet comprises further:
Subnet reversible transducer;
Subnet first battery unit, described subnet first battery unit is connected with the accumulator terminal of described subnet reversible transducer;
Subnet AC load, described subnet AC load is connected with the ac output end of described subnet reversible transducer;
Subnet renewable energy system, described subnet renewable energy system is connected with the ac output end of described subnet reversible transducer and described subnet AC load respectively.
7. mixed type micro-grid system according to claim 6, it is characterized in that, each dilatation subnet also comprises: subnet energy accumulation current converter and subnet second battery unit, and in each dilatation subnet, the interchange end of described subnet energy accumulation current converter is connected with the ac output end of described subnet reversible transducer, and the DC terminal of described subnet energy accumulation current converter is connected with described subnet second battery unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420496953.7U CN204046193U (en) | 2014-08-29 | 2014-08-29 | A kind of mixed type micro-grid system |
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| CN201420496953.7U CN204046193U (en) | 2014-08-29 | 2014-08-29 | A kind of mixed type micro-grid system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071440A (en) * | 2015-08-22 | 2015-11-18 | 上海电机学院 | Power supply grid based on new energy |
| CN105162150A (en) * | 2015-09-29 | 2015-12-16 | 江南大学 | Capacity measuring and calculating method for energy storage device of combined energy-accumulation off-grid new energy power generation system |
| CN105356579A (en) * | 2015-11-17 | 2016-02-24 | 新奥光伏能源有限公司 | Mobile energy supply method and energy supply system |
| CN105356573A (en) * | 2015-12-10 | 2016-02-24 | 青岛浪芯电子科技有限公司 | Multi-energy complementary power generation system and power supply distribution method |
| CN109390928A (en) * | 2017-08-04 | 2019-02-26 | 台达电子企业管理（上海）有限公司 | Auxiliary power supply and its method of supplying power to |
| CN110266034A (en) * | 2019-06-03 | 2019-09-20 | 深圳市禾望电气股份有限公司 | A kind of offshore wind farm DC transmission system |
| CN112448467A (en) * | 2019-09-04 | 2021-03-05 | 阿里巴巴集团控股有限公司 | Power supply system, power supply method and data center |
| DE102021116418A1 (en) | 2021-06-24 | 2022-12-29 | Sma Solar Technology Ag | Method for operating an energy supply system, device for exchanging electrical power in an energy supply system and energy supply system |
-
2014
- 2014-08-29 CN CN201420496953.7U patent/CN204046193U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071440A (en) * | 2015-08-22 | 2015-11-18 | 上海电机学院 | Power supply grid based on new energy |
| CN105162150A (en) * | 2015-09-29 | 2015-12-16 | 江南大学 | Capacity measuring and calculating method for energy storage device of combined energy-accumulation off-grid new energy power generation system |
| CN105162150B (en) * | 2015-09-29 | 2017-07-25 | 江南大学 | The measuring method of combined energy-accumulation off-network grid-connected power generation system capacity of energy storing device |
| CN105356579A (en) * | 2015-11-17 | 2016-02-24 | 新奥光伏能源有限公司 | Mobile energy supply method and energy supply system |
| CN105356579B (en) * | 2015-11-17 | 2018-03-23 | 新奥光伏能源有限公司 | A kind of portable energy supply method and energy supply system |
| CN105356573A (en) * | 2015-12-10 | 2016-02-24 | 青岛浪芯电子科技有限公司 | Multi-energy complementary power generation system and power supply distribution method |
| CN109390928A (en) * | 2017-08-04 | 2019-02-26 | 台达电子企业管理（上海）有限公司 | Auxiliary power supply and its method of supplying power to |
| CN110266034A (en) * | 2019-06-03 | 2019-09-20 | 深圳市禾望电气股份有限公司 | A kind of offshore wind farm DC transmission system |
| CN112448467A (en) * | 2019-09-04 | 2021-03-05 | 阿里巴巴集团控股有限公司 | Power supply system, power supply method and data center |
| DE102021116418A1 (en) | 2021-06-24 | 2022-12-29 | Sma Solar Technology Ag | Method for operating an energy supply system, device for exchanging electrical power in an energy supply system and energy supply system |
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