CN104600811A - Intelligent photovoltaic charging system - Google Patents

Intelligent photovoltaic charging system Download PDF

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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
Authority
CN
China
Prior art keywords
photovoltaic
bus
energy
charging
batteries
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510072451.0A
Other languages
Chinese (zh)
Inventor
王伟峰
冯文俊
解蕾
杨嘉俊
廖强强
仲隽伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI ELECTRIC POWER INDUSTRIAL Co Ltd
SHANGHAI YINGTONG ELECTRIC Co Ltd
State Grid Shanghai Electric Power Co Ltd
Original Assignee
SHANGHAI ELECTRIC POWER INDUSTRIAL Co Ltd
SHANGHAI YINGTONG ELECTRIC Co Ltd
State Grid Shanghai Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI ELECTRIC POWER INDUSTRIAL Co Ltd, SHANGHAI YINGTONG ELECTRIC Co Ltd, State Grid Shanghai Electric Power Co Ltd filed Critical SHANGHAI ELECTRIC POWER INDUSTRIAL Co Ltd
Priority to CN201510072451.0A priority Critical patent/CN104600811A/en
Publication of CN104600811A publication Critical patent/CN104600811A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/383Solar energy, e.g. photovoltaic energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

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

A kind of Intelligent photovoltaic charging system
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.
CN201510072451.0A 2015-02-11 2015-02-11 Intelligent photovoltaic charging system Pending CN104600811A (en)

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

Publications (1)

Publication Number Publication Date
CN104600811A true CN104600811A (en) 2015-05-06

Family

ID=53126415

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510072451.0A Pending CN104600811A (en) 2015-02-11 2015-02-11 Intelligent photovoltaic charging system

Country Status (1)

Country Link
CN (1) CN104600811A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20150506

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