CN205039612U - Scene stores up charging station system based on public dc bus of distributing type - Google Patents
Scene stores up charging station system based on public dc bus of distributing type Download PDFInfo
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- CN205039612U CN205039612U CN201520763837.1U CN201520763837U CN205039612U CN 205039612 U CN205039612 U CN 205039612U CN 201520763837 U CN201520763837 U CN 201520763837U CN 205039612 U CN205039612 U CN 205039612U
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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
- 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
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Abstract
The utility model relates to a scene stores up charging station system based on public dc bus of distributing type, include the photovoltaic power generation unit, energy storage unit, the battery charging unit that are connected with the dc bus, still include the wind power generation unit of being connected with the dc bus and exchange and network element. The dc bus adopts single dc bus or two dc bus framework. Wind power generation, photovoltaic power generation, the public dc bus of energy storage system are connected, send out usefulness promptly, and surplus electricity storage is incorporated into the power networks, can be from net or isolated island operation to under the net operating mode, can realize adjusting " millet is filled out in the peak clipping " of electric wire netting, reduce the power transmission and distribution cost. The system not only can adopt single dc bus framework but also can adopt two dc buss frameworks, and greatly increased direct current busbar voltage's control range satisfies the system performance demand easily, and the messenger system changes the extension, and the flexibility is used to the add -on system.
Description
Technical field
The utility model belongs to electric automobile charging station technical field, is specifically related to a kind of wind-light storage charging station system based on distributed common DC bus.
Background technology
In the face of the immense pressure such as oil crisis and environmental pollution; electric automobile becomes the main development direction of Future New Energy Source automobile; along with the progress of science and technology and the development of society; electric automobile correlation technique and electrically-charging equipment construction thereof can be constantly ripe, and electric automobile will more and more be widely used in the life of people.Electric automobile charging station is a very important part in electric automobile auxiliary facility, and electric automobile needs by abundant energy supply, to meet its traveling demand, thus must obtain energy from electrical network.At present, the electric automobile charging station system with photovoltaic system and energy-storage system has been installed in domestic existing area, but mostly based on ac bus, photovoltaic system and energy-storage system all need to be converted to alternating current by DC/AC inverter and be connected with ac bus.The problems such as this kind of charging station system is from AC network power taking, and the electric energy utilizing solar energy to transform, as supply, achieves charging electric vehicle basic function, but there is main line structure complexity, and overall losses is high, and efficiency is low, and construction cost is high.Along with the development of electric vehicle engineering, the charging station system based on DC bus also starts research and development, but this kind of charging station system of prior art often still adopts single photovoltaic system, does not have complementary power supply, cannot from net, islet operation.
There are a lot of remote districts in China, due to reasons such as utilance is low, construction cost is high, electric power difficulty of transportation, conventional electric car charging station network is difficult to extend to these areas, limit the scope of application of electric motor car, at remote mountain areas postscript, it enriches the resource such as photovoltaic, wind-powered electricity generation, and how solar energy and wind energy rationally to be made full use of in electric automobile charging station technology in remote districts is also a problem demanding prompt solution.
Utility model content
The utility model, in order to energy savings, improves charging station power supply reliability, realizes the flexible dispatching of energy, propose a kind of wind-light storage charging station system based on distributed common DC bus.
The wind-light storage charging station system based on distributed common DC bus that the utility model provides comprises the photovoltaic generation unit, energy-storage units, the charhing unit that are connected with DC bus, on the basis of existing technology, the utility model makes following improvement: described charging station system also comprises the wind power generation unit that is connected with DC bus and exchanges and net unit.
Further, described DC bus is single DC bus framework, by DC/DC transducer and direct current network.
Further, described wind power generation unit comprises wind-driven generator and AC/DC transducer, described interchange net unit comprises LCL filter and two-way AC/DC transducer.
Further, described DC bus is two DC bus frameworks, and two DC buss are all by DC/DC transducer and direct current network.
Further, described wind power generation unit comprises wind-driven generator and AC/DC transducer, described interchange net unit comprises LCL filter, two-way AC/DC transducer, two-way DC/DC transducer, described two-way DC/DC switch input connects a DC bus, and output connects another DC bus.
Further, described photovoltaic generation unit comprises photovoltaic combination, DC/DC transducer, described energy-storage units comprises energy-storage system and two-way DC/DC transducer, and described charhing unit comprises to the charging pile of DC electric car charging and to the charging pile of alternating current electric vehicle charging.
Further, select can degree of depth discharge and recharge can switch the energy-storage battery of charge and discharge process fast for described energy-storage system.Such as: flow battery, lithium battery, sodium-sulphur battery, lead-acid battery etc.
The beneficial effects of the utility model are:
1, wind power generation, photovoltaic generation, energy-storage system common DC bus connect, and namely send out i.e. use, and remaining electricity stores grid-connected, under grid-connected operating mode, can realize regulating " peak load shifting " of electrical network, reduces power transmission and distribution cost.
2, wind power generation and solar power generation complementary power supply is adopted, all there is very large practical value at wind-force and/or the sufficient area of solar energy, from net or islet operation, the range of application of charging station system can be expanded, the reliability of raising system, and there is higher operating efficiency.
3, system adopts DC bus framework, can direct current grid-connected, reduce system Construction cost, avoid the inversion loss of charging pile in ac bus framework in the past, overall improved system efficiency.
4, system exchanges also net unit is optional, and adopts single mode blocking doube bridge bidirectional transducer, reduces system hardware cost.
5, system not only can adopt single DC bus framework but also can adopt two DC bus framework, greatly increases the adjustable range of DC bus-bar voltage, easily meets performance requirements, system is more easily expanded, and increases system and uses flexibility.
6, the charge and discharge control defencive function that has of energy-storage system itself and the charging of momentary high power can be completed, function that electric discharge switches; supplement randomness and the unsteadiness of wind power generation and photovoltaic generation; play effect of electric power " peak load shifting "; in addition; energy-storage system also has low voltage crossing and isolated island support function, adds the safety and stability of distributed charging station.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment one charging station system schematic diagram,
Fig. 2 is the utility model embodiment two charging station system schematic diagram.
Accompanying drawing marks:
1, DC bus, 2-1, wind-driven generator, 2-2, wind-driven generator, 3-1, AC/DC transducer, 3-2, AC/DC transducer, 4-1, photovoltaic combines, 4-2, photovoltaic combines, 5-1, DC/DC transducer, 5-2, DC/DC transducer, 6, energy-storage system, 7, two-way DC/DC transducer, 8, LCL filter, 9, two-way AC/DC transducer, 10, DC bus, 11-1, wind-driven generator, 11-2, wind-driven generator, 12-1, AC/DC transducer, 12-2, AC/DC transducer, 13-1, photovoltaic combines, 13-2, photovoltaic combines, 14-1, DC/DC transducer, 14-2, DC/DC transducer, 15, energy-storage system, 16, two-way DC/DC transducer, 17, LCL filter, 18, two-way AC/DC transducer, 19, two-way DC/DC transducer, 20, DC bus, 21, DC/DC transducer, 22, DC/DC transducer,
A-1, two-way DC/DC transducer, A-2, two-way DC/DC transducer, A-3, two-way DC/DC transducer, B-1, two-way DC/AC transducer, B-2, two-way DC/AC transducer, B-3, two-way DC/AC transducer, C-1, two-way DC/DC transducer, C-2, two-way DC/DC transducer, C-3, two-way DC/DC transducer, D-1, two-way DC/AC transducer, D-2, two-way DC/AC transducer, D-3, two-way DC/AC transducer.
Embodiment
The utility model provides a kind of wind-light storage charging station system based on distributed common DC bus, for making the purpose of this utility model, technical scheme and effect clearly, clearly, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is described in further details.
Embodiment one
With reference to Fig. 1, the present embodiment, for the charging station of single DC bus framework, describes the wind-light storage charging station system based on distributed common DC bus of the present utility model in detail.Described charging station system comprise be connected with DC bus 1 wind power generation unit, photovoltaic generation unit, energy-storage units, interchange net unit.Described wind power generation unit comprises two typhoon power generators (2-1,2-2) and two AC/DC transducers (3-1,3-2), the input of described two AC/DC transducers (3-1,3-2) connects wind-driven generator (2-1,2-2) respectively, and the output of described AC/DC transducer (3-1,3-2) all connects DC bus 1.Described photovoltaic generation unit comprises two groups of photovoltaic combinations (4-1,4-2) and two DC/DC transducers (5-1,5-2), the input of described DC/DC transducer (5-1,5-2) connects the input of photovoltaic combination (4-1,4-2) respectively, and the output of described DC/DC transducer (5-1,5-2) all connects DC bus 1.Described energy-storage units comprises energy-storage system 6 and a two-way DC/DC transducer 7, and one end of described two-way DC/DC transducer 7 connects energy-storage system 6, and the other end connects DC bus 1.Described interchange net unit comprises a LCL filter 8 and a two-way AC/DC transducer 9, described two-way AC/DC transducer 9 one end connects LCL filter 8, and one end connects DC bus 1, and described LCL filter 8 is connected with AC network.Described charging station system also comprises charhing unit, and described charhing unit comprises three to the charging pile of DC electric car charging and three charging piles charged to alternating current electric vehicle.The described charging pile to DC electric car charging adopts two-way DC/DC transducer (A-1, A-2, A-3), and its one end connects DC bus 1, and one end can connect DC electric car.The described charging pile to alternating current electric vehicle charging adopts two-way DC/AC transducer (B-1, B-2, B-3), and its one end connects DC bus 1, and one end can connect alternating current electric vehicle.
The capacity of the wind power generation unit of the present embodiment and the wind-driven generator (2-1,2-2) of photovoltaic generation unit and photovoltaic combination (4-1,4-2) and quantity can be built regional load according to actual charging station and be decided; be not confined to two typhoon power generators and two groups of photovoltaic combinations, the combination of any capacity and quantity is all within protection range of the present utility model.
Energy-storage system 6 is for store electrical energy, and at wind power generation with photovoltaic power generation quantity is unnecessary or these electrical power storage got up in non-loaded situation, load is more, electric energy that is that stored when the supply capacity weakness that generates electricity discharges to DC bus 1.Described energy-storage system 6 is selected can degree of depth discharge and recharge can switch the energy-storage battery of charge and discharge process fast, and the present embodiment selects flow battery.Described energy-storage system 6 capacity is selected according to energy output and load; the charge and discharge control defencive function that energy-storage system 6 has itself and can complete momentary high power charging, electric discharge switch function; supplement randomness and the unsteadiness of wind power generation and photovoltaic generation; play effect of electric power " peak load shifting "; energy-storage system 6 also has low voltage crossing and isolated island support function in addition, can tackle the exceedingly odious situation of electrical network.
The interchange of the present embodiment net unit is a selectable unit, exchange grid-connected difficulty, but the exurb of wind energy and solar energy abundance need not use at some.So, this charging station system also becomes the system that a green cleaner power sources is powered, not only energy-conserving and environment-protective, and saves the manpower, material resources and financial resources setting up ac transmission network.
Charhing unit is the final service terminal of charging station, for direct current drive automobile or a.c. electric car provide charging continuation of the journey service.The quantity of the present embodiment charhing unit charging pile is also build regional load amount according to charging station to decide.Area, the following large-and-medium size cities higher in some electric automobile volumes of holding, the quantity of charging pile can be more, in some small cities even exurb then without the need to building so much charging pile facility.
The present embodiment system works operational process: first wind power generation electric energy and solar power generation electric energy access DC bus 1 after distribution power transformation, DC bus 1 arranges access charhing unit to charging electric vehicle, form the generating electricity consumption loop namely sent out namely, and remaining electricity is stored in energy-storage system 6.When AC network is in peak of power consumption, energy-storage system 6 can to AC network power transmission, concrete, and the electric energy that energy-storage system 6 sends through DC bus 1, and to be delivered in AC network through two-way AC/DC transducer 9 conversion after two-way DC/DC transducer 7 is changed.When AC network is in low power consumption, the electric energy of AC network also can be delivered to DC bus 1 through two-way AC/DC transducer 9 conversion, and is stored in energy-storage system 6 through two-way DC/DC transducer 7 conversion, plays the effect of " peak load shifting ".When wind power generation amount and solar power generation amount can not meet charhing unit use, the electric energy of energy-storage system 6 can be changed by two-way DC/DC transducer 7 and send into charhing unit use through DC bus 1.The electric energy of energy-storage system 6 also by DC/DC transducer (not shown) that DC bus 1 connects and direct current network run.
Embodiment two
The utility model controls except adopting distributed single DC bus, and two DC bus can also be adopted to control.
With reference to Fig. 2, the present embodiment, for the charging station of two DC bus structure, describes the wind-light storage charging station system based on distributed common DC bus of the present utility model in detail.Described charging station system comprise be connected with a DC bus 10 wind power generation unit, photovoltaic generation unit, energy-storage units, interchange net unit.Described wind power generation unit comprises two typhoon power generators (11-1,11-2) and two AC/DC transducers (12-1,12-2), the input of described two AC/DC transducers (12-1,12-2) connects two wind-driven generators (11-1,11-2) respectively, and the output of described two AC/DC transducers (12-1,12-2) connects DC bus 10.Described photovoltaic generation unit comprises two groups of photovoltaic combinations (13-1,13-2) and two DC/DC transducers (14-1,14-2), the input of described two DC/DC transducers (14-1,14-2) connects the input of two photovoltaics combination (13-1,13-2) respectively, and the output of described two DC/DC transducers (14-1,14-2) connects DC bus 10.Described energy-storage units comprises energy-storage system 15 and a two-way DC/DC transducer 16, and one end of described two-way DC/DC transducer 16 connects energy-storage system 15, and the other end connects DC bus 10.Described interchange net unit comprises the two-way AC/DC transducer 18 of a LCL filter 17, and a two-way DC/DC transducer 19, one end of described two-way DC/DC transducer 19 connects a DC bus 10, the other end connects another DC bus 20, described two-way AC/DC transducer 18 one end connects LCL filter 17, one end connects two-way DC/DC transducer 19, and described LCL filter 17 is connected with AC network.Described charging station system also comprises the charhing unit be connected with another DC bus 20, and described charhing unit comprises three to the charging pile of DC electric car charging and three charging piles charged to alternating current electric vehicle.The described charging pile to DC electric car charging adopts two-way DC/DC transducer (C-1, C-2, C-3), and its one end connects DC bus 20, and one end can connect DC electric car.The described charging pile to alternating current electric vehicle charging adopts two-way DC/AC transducer (D-1, D-2, D-3), and its one end connects DC bus 20, and one end can connect alternating current electric vehicle.Described two DC buss are all by DC/DC transducer (21,22) and direct current network.
The present embodiment and embodiment once difference be to adopt two DC bus framework, two-way DC/DC transducer 19 is connected between two DC buss, described two-way DC/DC transducer 19 is directly controlled by the utility model charging station system master controller (not shown), different system allotment strategy is implemented according to different system state, coordinate energy flow, keeping system stable operation, and be provided with from grid-connected two kinds of control models.In grid-connected situation, wind power generation unit and photovoltaic generation unit energy output sum are greater than DC bus 20 load, preferential energy-storage system 15 of giving charges, and when energy-storage system 15 is without the need to charging, by two-way DC/DC transducer 19, DC energy is reversed supply AC network.In grid-connected situation, wind power generation unit and photovoltaic generation unit energy output sum are less than DC bus 20 load, by two-way DC/DC transducer 19 by AC network Power supply DC bus 20.From in net situation, if wind power generation unit and photovoltaic generation unit energy output sum are less than DC bus 20 load, energy-storage system 15 can discharge electric energy supply DC bus 20.
The capacity of the wind power generation unit of the present embodiment and the wind-driven generator (11-1,11-2) of photovoltaic generation unit and photovoltaic combination (13-1,13-2) and quantity also can be built regional load according to actual charging station and be decided; be not confined to two typhoon power generators and two groups of photovoltaic combinations, the combination of any capacity and quantity is all within protection range of the present utility model.The energy-storage system 15 of the present embodiment is selected can degree of depth discharge and recharge can switch the lithium battery of charge and discharge process fast, and described energy-storage system 15 capacity is selected according to energy output and load, also plays the effect of " peak load shifting " in the present embodiment.The quantity of the present embodiment charhing unit charging pile is also build regional load amount according to charging station to decide.
Claims (7)
1. the wind-light storage charging station system based on distributed common DC bus, comprise the photovoltaic generation unit, energy-storage units, the charhing unit that are connected with DC bus, it is characterized in that: also comprise the wind power generation unit that is connected with DC bus and exchange and net unit.
2. as claimed in claim 1 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described DC bus is single DC bus framework, by DC/DC transducer and direct current network.
3. as claimed in claim 2 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described wind power generation unit comprises wind-driven generator and AC/DC transducer, described interchange net unit comprises LCL filter and two-way AC/DC transducer.
4. as claimed in claim 1 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described DC bus is two DC bus frameworks, two DC buss are all by DC/DC transducer and direct current network.
5. as claimed in claim 4 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described wind power generation unit comprises wind-driven generator and AC/DC transducer, described interchange net unit comprises LCL filter, two-way AC/DC transducer, two-way DC/DC transducer, described two-way DC/DC switch input connects a DC bus, and output connects another DC bus.
6. as claimed in claim 1 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described photovoltaic generation unit comprises photovoltaic combination, DC/DC transducer, described energy-storage units comprises energy-storage system and two-way DC/DC transducer, and described charhing unit comprises to the charging pile of DC electric car charging and to the charging pile of alternating current electric vehicle charging.
7. as claimed in claim 6 based on the wind-light storage charging station system of distributed common DC bus, it is characterized in that: described energy-storage system is selected can degree of depth discharge and recharge can switch the energy-storage battery of charge and discharge process fast.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186669A (en) * | 2015-09-29 | 2015-12-23 | 张洪亮 | Distributed common direct current bus based wind energy and solar energy stored charging station system |
| CN105576809A (en) * | 2016-03-08 | 2016-05-11 | 中国矿业大学 | Bidirectional charging pile system based on wind-solar-diesel-storage energy microgrid |
| CN107284259A (en) * | 2017-06-16 | 2017-10-24 | 武汉科华动力科技有限公司 | DC charging system and its charging method for low-voltage battery system |
| CN107579514A (en) * | 2017-10-10 | 2018-01-12 | 集美大学 | A kind of wind-light storage direct current power system and control method for offshore platform |
| CN107706904A (en) * | 2017-10-10 | 2018-02-16 | 集美大学 | Energy storage converter virtual resistance control method in offshore platform wind-light storage DC power-supply system |
| CN107732896A (en) * | 2017-10-10 | 2018-02-23 | 集美大学 | The virtual induction reactance control method of wind-power electricity generation in offshore platform wind-light storage DC power-supply system |
| CN108233366A (en) * | 2018-01-11 | 2018-06-29 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of coordination method for controlling power supply of providing multiple forms of energy to complement each other for being applicable in zero carbon building |
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2015
- 2015-09-29 CN CN201520763837.1U patent/CN205039612U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186669A (en) * | 2015-09-29 | 2015-12-23 | 张洪亮 | Distributed common direct current bus based wind energy and solar energy stored charging station system |
| CN105576809A (en) * | 2016-03-08 | 2016-05-11 | 中国矿业大学 | Bidirectional charging pile system based on wind-solar-diesel-storage energy microgrid |
| CN107284259A (en) * | 2017-06-16 | 2017-10-24 | 武汉科华动力科技有限公司 | DC charging system and its charging method for low-voltage battery system |
| CN107579514A (en) * | 2017-10-10 | 2018-01-12 | 集美大学 | A kind of wind-light storage direct current power system and control method for offshore platform |
| CN107706904A (en) * | 2017-10-10 | 2018-02-16 | 集美大学 | Energy storage converter virtual resistance control method in offshore platform wind-light storage DC power-supply system |
| CN107732896A (en) * | 2017-10-10 | 2018-02-23 | 集美大学 | The virtual induction reactance control method of wind-power electricity generation in offshore platform wind-light storage DC power-supply system |
| CN107579514B (en) * | 2017-10-10 | 2019-07-16 | 集美大学 | A kind of wind-light storage direct current power system and control method for offshore platform |
| CN108233366A (en) * | 2018-01-11 | 2018-06-29 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of coordination method for controlling power supply of providing multiple forms of energy to complement each other for being applicable in zero carbon building |
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Effective date of registration: 20210415 Address after: 266000 room 402, building 2, high level talent entrepreneurship center, 153 Zhuzhou Road, Laoshan District, Qingdao City, Shandong Province Patentee after: TBEA new energy (Qingdao) Co.,Ltd. Address before: 266100 6-1-404, 265 Qingshan Road, Licang District, Qingdao City, Shandong Province Patentee before: Zhang Hongliang |
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Effective date of registration: 20220805 Address after: 266000 floor 18, building 2, Shandong Private Science and Technology Building (Minghui International), No. 39 Shiling Road, Laoshan District, Qingdao, Shandong Province (centralized office area) Patentee after: Qingdao Honglian Investment Partnership (Limited Partnership) Address before: 266000 room 402, building 2, high level talent entrepreneurship center, 153 Zhuzhou Road, Laoshan District, Qingdao City, Shandong Province Patentee before: TBEA new energy (Qingdao) Co.,Ltd. |