CN104600811A - Intelligent photovoltaic charging system - Google Patents
Intelligent photovoltaic charging system Download PDFInfo
- Publication number
- CN104600811A CN104600811A CN201510072451.0A CN201510072451A CN104600811A CN 104600811 A CN104600811 A CN 104600811A CN 201510072451 A CN201510072451 A CN 201510072451A CN 104600811 A CN104600811 A CN 104600811A
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- China
- Prior art keywords
- photovoltaic
- bus
- energy
- batteries
- intelligent
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- 238000004146 energy storage Methods 0.000 claims description 15
- 238000010248 power generation Methods 0.000 abstract description 11
- 230000002457 bidirectional effect Effects 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H02J3/383—
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an intelligent photovoltaic charging system. The intelligent photovoltaic charging system comprises a photovoltaic power generation system, a plurality of charging piles and a storage battery energy-storing loop. The photovoltaic power generation system comprises a plurality of photovoltaic modules, a photovoltaic inverter and a direct-current combiner box, wherein the direct-current combiner box is used for connecting the photovoltaic modules with the direct-current end of the photovoltaic inverter, and the alternating-current end of the photovoltaic inverter is connected with a 380V bus. Each charging pile is connected with the 380V bus, and the storage battery energy-storing loop comprises an energy-storing battery pack and a bidirectional converter, wherein the bidirectional converter is used for connecting the energy-storing battery pack with the 380V bus. The intelligent photovoltaic charging system has the advantages that stable output of distributed photovoltaic power generation is guaranteed effectively, and photovoltaic utilization efficiency is improved substantially.
Description
Technical field
The present invention relates to a kind of Intelligent photovoltaic charging system in microgrid field.
Technical background
Along with the solution of grid-connected problem and the continuous decline of cost for solar power generation, increasing family and factory consider to install photovoltaic plant on roof, and meet oneself need for electricity on the one hand, unnecessary photovoltaic electric power can also sell State Grid Corporation of China on the other hand.And photovoltaic electric power is from net generating or generates electricity by way of merging two or more grid systems and all there is intermittent and stability problem, how to solve the important topic that the intermittence of photovoltaic electric power and stability problem are renewable energy utilizations.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of Intelligent photovoltaic charging system, it ensures steadily exerting oneself of distributed photovoltaic power generation effectively, significantly improves the utilization ratio of photovoltaic.
Realizing above-mentioned purpose technical scheme is: a kind of Intelligent photovoltaic charging system, comprises photovoltaic generating system and some charging piles, it is characterized in that:
Described Intelligent photovoltaic charging system circuit is also provided with batteries to store energy loop;
Described photovoltaic generating system comprises some photovoltaic modulies, photovoltaic DC-to-AC converter, and the direct current conflux case for being connected with the DC terminal of described photovoltaic DC-to-AC converter by each described photovoltaic module, and the interchange end of described photovoltaic DC-to-AC converter connects 380V bus;
Each described charging pile connects described 380V bus;
Described batteries to store energy loop comprises energy-storage battery group, and the two way convertor for described energy-storage battery group being connected with described 380V bus.
Further, between described photovoltaic generating system and described 380V bus, between described batteries to store energy loop and described 380V bus, between each described charging pile and described 380V bus, be equipped with switch.
Further, described Intelligent photovoltaic charging system 380V bus is also connected with electric energy computation chip, described electric energy computation chip connects direct current conflux case on described photovoltaic generating system and the described energy-storage battery group stated on batteries to store energy loop.
Have employed the technical scheme of a kind of Intelligent photovoltaic charging system of the present invention, comprise photovoltaic generating system, some charging piles and batteries to store energy loop; Described photovoltaic generating system comprises some photovoltaic modulies, photovoltaic DC-to-AC converter, and the direct current conflux case for each described photovoltaic module is connected with the DC terminal of described photovoltaic DC-to-AC converter, each described charging pile connects described 380V bus, and the interchange end of described photovoltaic DC-to-AC converter connects 380V bus; Described batteries to store energy loop comprises energy-storage battery group, and the two way convertor for described energy-storage battery group being connected with described 380V bus.Its technique effect is: effectively ensure steadily exerting oneself of distributed photovoltaic power generation, significantly improve the utilization ratio of photovoltaic.
Accompanying drawing explanation
Fig. 1 is the winding diagram of a kind of Intelligent photovoltaic charging system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1, there is shown a kind of Intelligent photovoltaic charging system of the present invention, comprise photovoltaic generating system 7 and batteries to store energy loop 8.
Photovoltaic generating system 7 comprises some photovoltaic modulies 1, photovoltaic DC-to-AC converter 3, and for inciting somebody to action, the direct current conflux case 2 that each photovoltaic module 1 is connected with the DC terminal of described photovoltaic DC-to-AC converter 3, the interchange end of photovoltaic DC-to-AC converter 3 connects 380V bus;
Batteries to store energy loop 8 comprises energy-storage battery group 4, and the two way convertor 5 for energy-storage battery group 4 being connected with 380V bus.
Photovoltaic module 1 converts solar energy into direct current energy, and is converged by direct current conflux case 2; The direct current energy of the photovoltaic module 1 that direct current conflux case 2 converges by photovoltaic DC-to-AC converter 3 is converted into and the sine-wave current of electrical network same frequency with voltage magnitude, access 380V bus.
Energy-storage battery group 4 accesses 380V bus by two way convertor 5.
Each charging pile 9 all accesses 380V bus.
Between photovoltaic generating system 7 and 380V bus, between batteries to store energy loop 8 and 380V bus, between each charging pile 9 and 380V bus, be equipped with switch.
380V bus is also connected with electric energy computation chip 6, and electric energy computation chip 6 connects the direct current junction station 2 on photovoltaic generating system 7 and the energy-storage battery group 4 on batteries to store energy loop 8.
Operation principle of the present invention is: on the basis of conventional photovoltaic electricity generation system, increase batteries to store energy loop 8, when electric energy computation chip 6 be metered into solar power generation amount be greater than charging pile 9 charge load time, a part of electrical power storage in unnecessary electric energy is in energy-storage battery group 4; When electric energy computation chip 6 be metered into solar power generation amount be less than the load of charging pile 9 time, not enough electric energy is supplied by the electric discharge of energy-storage battery group 4.Photovoltaic generating system 7 and batteries to store energy loop 8 complementation are by between photovoltaic generating system 7 and 380V bus, and between batteries to store energy loop 8 and 380V bus, the switch between each charging pile 9 and 380V bus realizes.
In sum, the present invention is by the comprehensive utilization of photovoltaic generating system 7 with batteries to store energy loop 8, utilize sun the subject of knowledge and the object of knowledge energy output more efficiently, regulative mode is more flexible, and the generating of photovoltaic generating system 7 and the controllable aerating electric discharge in batteries to store energy loop 8 are to the useful life that ensure that batteries to store energy loop 8.
Adopt battery energy storage technology not only can effectively solve steadily exerting oneself of distributed photovoltaic power generation, significantly can also improve the utilization ratio of photovoltaic.
After introducing batteries to store energy loop 8 in Intelligent photovoltaic charging system, one is effectively can realize dsm, peak-valley difference between eliminating round the clock, level and smooth load, more effectively utilizes power equipment, reduces power supply cost, two is can improve system run all right, improve the quality of power supply, such as frequency modulation, pressure regulation, phase modulation etc., three is randomness, the fluctuation problem that can solve renewable energy power generation, realizes the level and smooth output of renewable energy power generation.
Although through being described in conjunction with specific embodiments the present invention, for the skilled personage of the art, according to describing above make substitute, amendment will be apparent with changing.Therefore, when such alternative, modifications and variations fall in the spirit and scope of attached claim, should be included in the present invention.
Claims (3)
1. an Intelligent photovoltaic charging system, comprises photovoltaic generating system and some charging piles, it is characterized in that:
Described Intelligent photovoltaic charging system circuit is also provided with batteries to store energy loop;
Described photovoltaic generating system comprises some photovoltaic modulies, photovoltaic DC-to-AC converter, and the direct current conflux case for being connected with the DC terminal of described photovoltaic DC-to-AC converter by each described photovoltaic module, and the interchange end of described photovoltaic DC-to-AC converter connects 380V bus;
Each described charging pile connects described 380V bus;
Described batteries to store energy loop comprises energy-storage battery group, and the two way convertor for described energy-storage battery group being connected with described 380V bus.
2. a kind of intelligent recharge and discharge machine host circuit according to claim 1, it is characterized in that: between described photovoltaic generating system and described 380V bus, between described batteries to store energy loop and described 380V bus, between each described charging pile and described 380V bus, be equipped with switch.
3. a kind of intelligent recharge and discharge machine host circuit according to claim 1, it is characterized in that: described 380V bus is also connected with electric energy computation chip, described electric energy computation chip connects direct current conflux case on described photovoltaic generating system and the described energy-storage battery group stated on batteries to store energy loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072451.0A CN104600811A (en) | 2015-02-11 | 2015-02-11 | Intelligent photovoltaic charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072451.0A CN104600811A (en) | 2015-02-11 | 2015-02-11 | Intelligent photovoltaic charging system |
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| Publication Number | Publication Date |
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| CN104600811A true CN104600811A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510072451.0A Pending CN104600811A (en) | 2015-02-11 | 2015-02-11 | Intelligent photovoltaic charging system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553016A (en) * | 2015-12-31 | 2016-05-04 | 深圳市科陆电子科技股份有限公司 | Distributed type photovoltaic energy storage charging pile |
| WO2016188433A1 (en) * | 2015-05-27 | 2016-12-01 | 华为技术有限公司 | Power supply system and power supply method |
| CN107425589A (en) * | 2017-06-14 | 2017-12-01 | 山东博恒新能源有限公司 | Charging system and charger based on photovoltaic and energy storage |
| CN107415766A (en) * | 2017-09-19 | 2017-12-01 | 中国能源建设集团江苏省电力设计院有限公司 | Possesses the electric automobile integration electrically-charging equipment of photovoltaic generation and energy-storage function |
-
2015
- 2015-02-11 CN CN201510072451.0A patent/CN104600811A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188433A1 (en) * | 2015-05-27 | 2016-12-01 | 华为技术有限公司 | Power supply system and power supply method |
| US10103689B2 (en) | 2015-05-27 | 2018-10-16 | Huawei Technologies Co., Ltd. | Power supply system with inverter unit control of inverter AC side neutral point |
| CN105553016A (en) * | 2015-12-31 | 2016-05-04 | 深圳市科陆电子科技股份有限公司 | Distributed type photovoltaic energy storage charging pile |
| CN105553016B (en) * | 2015-12-31 | 2019-06-04 | 深圳市科陆电子科技股份有限公司 | A kind of distributed photovoltaic energy storage charging pile |
| CN107425589A (en) * | 2017-06-14 | 2017-12-01 | 山东博恒新能源有限公司 | Charging system and charger based on photovoltaic and energy storage |
| CN107415766A (en) * | 2017-09-19 | 2017-12-01 | 中国能源建设集团江苏省电力设计院有限公司 | Possesses the electric automobile integration electrically-charging equipment of photovoltaic generation and energy-storage function |
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