CN202997585U - Household solar energy grid connected generation system - Google Patents

Household solar energy grid connected generation system Download PDF

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Publication number
CN202997585U
CN202997585U CN2012206039980U CN201220603998U CN202997585U CN 202997585 U CN202997585 U CN 202997585U CN 2012206039980 U CN2012206039980 U CN 2012206039980U CN 201220603998 U CN201220603998 U CN 201220603998U CN 202997585 U CN202997585 U CN 202997585U
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CN
China
Prior art keywords
grid
inverter
distribution box
miniature
storage battery
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.)
Expired - Fee Related
Application number
CN2012206039980U
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Chinese (zh)
Inventor
王建军
宁兆伟
冯涛
梁丛武
张健超
黄涛华
周义
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.)
NANTONG MEINENGDE SOLAR ENERGY ELECTRIC POWER TECHNOLOGY CO LTD
Original Assignee
NANTONG MEINENGDE SOLAR ENERGY ELECTRIC POWER TECHNOLOGY 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 NANTONG MEINENGDE SOLAR ENERGY ELECTRIC POWER TECHNOLOGY CO LTD filed Critical NANTONG MEINENGDE SOLAR ENERGY ELECTRIC POWER TECHNOLOGY CO LTD
Priority to CN2012206039980U priority Critical patent/CN202997585U/en
Application granted granted Critical
Publication of CN202997585U publication Critical patent/CN202997585U/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • 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 present utility model relates to a household solar energy grid connected generation system. The system comprises a solar cell module, a miniature grid connected inverter, a bidirectional inverter, a storage battery group, an AC distribution box and an electric grid. An output end of the solar cell module is connected with the miniature grid connected inverter, an AC output end of the miniature grid connected inverter is connected with the AC distribution box after being connected in parallel; one end of the bidirectional inverter is connected with the AC distribution box, and the other end is connected with the storage battery group. The AC distribution box is connected with the electric grid. According to needs, the solar cell module is a monocrystalline silicon or polysilicon solar cell module; and the storage battery group is a lead acid storage battery, a colloid storage battery or a lithium iron phosphate cell. The system has high energy conversion efficiency, a miniature uninterrupted electric grid is formed by various parts of the system, electricity using demands of a load under different situations can be satisfied, and continuity and stability of power supply of the system can be guaranteed.

Description

A kind of domestic solar grid-connected system
Technical field
The utility model relates to field of solar energy utilization, particularly a kind of domestic solar grid-connected system.
Background technology
Along with signaling for help repeatedly of the traditional fuel resources such as coal, oil, the use of non-renewable energy resources increasingly sharpens to the harm that environment causes, and energy problem becomes the bottleneck that restricts international community's economic development day by day.Given this plant situation, countries in the world are all in the Devoting Major Efforts To Developing regenerative resource, as solar energy, biomass energy, wind energy, water energy and geothermal energy equal energy source.Solar energy is widely used in recent years as the most promising a kind of regenerative resource, and wherein most important one is applied as photovoltaic generation.
At present photovoltaic generating system mainly is divided into grid-connected photovoltaic system and from the net photovoltaic system.In grid-connected photovoltaic system, photovoltaic module converts solar energy into direct current energy, by combining inverter, direct current energy is converted into the AC energy supply load of electrical network with the frequency homophase and uses and the feed-in electrical network; In the net photovoltaic system, controller can carry out regulation and control to the photovoltaic module electricity, on the one hand the energy after adjusting is sent to DC load or AC load, on the other hand unnecessary energy being sent to batteries stores, when electricity can not satisfy the load needs, controller was sent to load to the electric energy of storage battery again.
The domestic solar roof system is widely used at present, wherein major part is grid-connected system, if but the electrical network that this system connects breaks down after outage, whole system also can stop generating, cause domestic loads to work, bring loss and inconvenience to the user; Another part is off-grid system, although can guarantee the continuous operation of domestic loads, but also there is apparent in view shortcoming in this system, as not high in system effectiveness, reliability is bad, needs periodic maintenance, and often discharging and recharging of storage battery causes its useful life limited, need periodic replacement, so the maintenance cost of this system is very high.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of domestic solar grid-connected system, whole system has very high energy conversion efficiency and stable performance, both can be for domestic loads, the excrescent electric power that can simultaneously system be produced again is stored into standby batteries.
The technical scheme that the utility model addresses the above problem is:
A kind of domestic solar grid-connected system, comprise solar module, miniature grid-connected inverter, two-way inverter, batteries, A.C. distribution box and electrical network, the output of described solar module is connected with miniature grid-connected inverter, the ac output end incoming transport distribution box of miniature grid-connected inverter, one termination of described two-way inverter enters A.C. distribution box, the other end connects batteries, and described A.C. distribution box is connected with electrical network.
As required, described solar module is monocrystalline silicon or polycrystalline solar module.
Described batteries is lead acid accumulator or colloid storage battery or ferric phosphate lithium cell.
The operation principle of this system is: the solar module in native system, miniature grid-connected inverter, two-way inverter, batteries and A.C. distribution box have formed the small-sized uninterrupted electrical network of family expenses, the direct current of every solar module generation directly is converted to the small-sized uninterrupted electrical network of alternating current input by miniature grid-connected inverter, when the electric weight that produces when solar energy is sufficient, small-sized uninterrupted electrical network first-selection is solar powered, and the energy of surplus is passed through two-way inverter to batteries to store energy; When the electric weight that produces when solar energy was not enough, electrical network was powered as a supplement; When grid power blackout, small-sized uninterrupted electrical network by two-way inverter power supply, guarantees that electric power system is uninterrupted by batteries.
The beneficial effects of the utility model are: (1) every solar module connects miniature grid-connected inverter, has guaranteed that all solar modules are operated in maximum power point, and system has best conversion efficiency; (2) be independent of each other between solar module, monolithic element breaks down can not affect the normal operation of system, and System Expansion is very convenient in addition; (3) due to system disposition batteries, system is had bear the ability of power network fluctuation, interruption, guaranteed the continuity of system power supply, system has very high stability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1 is solar module, and 2 is miniature grid-connected inverter, and 3 is two-way inverter, and 4 is batteries, and 5 is A.C. distribution box, and 6 is electrical network, and 7 is AC load.
Embodiment:
For further understanding technical characterictic of the present utility model and content, describe below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of domestic solar grid-connected system comprises polylith solar module parallel with one another 1, miniature grid-connected inverter 2, two-way inverter 3, batteries 4, A.C. distribution box 5 and electrical network 6.
The output of described every solar module 1 all is connected with a miniature grid-connected inverter 2, incoming transport distribution box 5 after the ac output end parallel connection of miniature grid-connected inverter 2, one termination of described two-way inverter 3 enters A.C. distribution box 5, the other end connects batteries 4, and described A.C. distribution box 5 is connected with electrical network.
Described solar module 1 is monocrystalline silicon or polycrystalline solar module.
Described batteries 4 is lead acid accumulator or colloid storage battery or ferric phosphate lithium cell.
Above-mentioned all parts forms in fact the small-sized uninterrupted electrical network of family expenses, and the AC load 7 of family is preferentially used the electric energy of solar energy generation under normal circumstances, if this part electric energy has surplus, superfluous passes through two-way inverter to battery charging.When running into solar energy provides when overcast and rainy electric energy and be not enough to satisfy the normal use of AC load, electrical network powers to the load as a supplement.Have a power failure if electrical network hinders for some reason, this moment, batteries was passed through two-way inverter power supply, and is uninterrupted to guarantee electric power system.

Claims (3)

1. domestic solar grid-connected system is characterized in that:
Comprise polylith solar module parallel with one another (1), miniature grid-connected inverter (2), two-way inverter (3), batteries (4), A.C. distribution box (5) and electrical network (6),
The output of described every solar module (1) all is connected with a miniature grid-connected inverter (2), the ac output end of miniature grid-connected inverter (2) incoming transport distribution box (5) in parallel, one termination of described two-way inverter (3) enters A.C. distribution box (5), the other end connects batteries (4), and described A.C. distribution box (5) is connected with electrical network.
2. domestic solar grid-connected system as claimed in claim 1 is characterized in that:
Described solar module (1) is monocrystalline silicon or polycrystalline solar module.
3. domestic solar grid-connected system as claimed in claim 1 is characterized in that:
Described batteries (4) is lead acid accumulator or colloid storage battery or ferric phosphate lithium cell.
CN2012206039980U 2012-11-15 2012-11-15 Household solar energy grid connected generation system Expired - Fee Related CN202997585U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012206039980U CN202997585U (en) 2012-11-15 2012-11-15 Household solar energy grid connected generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012206039980U CN202997585U (en) 2012-11-15 2012-11-15 Household solar energy grid connected generation system

Publications (1)

Publication Number Publication Date
CN202997585U true CN202997585U (en) 2013-06-12

Family

ID=48568716

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012206039980U Expired - Fee Related CN202997585U (en) 2012-11-15 2012-11-15 Household solar energy grid connected generation system

Country Status (1)

Country Link
CN (1) CN202997585U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103929115A (en) * 2014-04-22 2014-07-16 武汉理工大学 Grid-connection and off-grid double-mode ship solar power generating system
CN103956820A (en) * 2014-04-15 2014-07-30 浙江朗呈新能源有限公司 Mixed distribution system and control method for various energy storage modules for photovoltaic power generation
CN104734606A (en) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 Photovoltaic energy storage device and photovoltaic system
CN105870961A (en) * 2016-03-29 2016-08-17 郑尧 Hybrid power system and power supply method
US9716397B2 (en) 2013-10-14 2017-07-25 Lg Chem, Ltd. Apparatus and method for maintaining charge amount of secondary battery
CN108599210A (en) * 2018-03-28 2018-09-28 中国电力科学研究院有限公司 A kind of echelon battery energy storage system and method for household photovoltaic power grid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104919674B (en) * 2013-10-14 2018-05-15 株式会社Lg化学 Maintain the device and method of secondary cell charge volume
US9716397B2 (en) 2013-10-14 2017-07-25 Lg Chem, Ltd. Apparatus and method for maintaining charge amount of secondary battery
CN104734606A (en) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 Photovoltaic energy storage device and photovoltaic system
CN103956820A (en) * 2014-04-15 2014-07-30 浙江朗呈新能源有限公司 Mixed distribution system and control method for various energy storage modules for photovoltaic power generation
CN103956820B (en) * 2014-04-15 2016-07-06 浙江朗呈新能源有限公司 The multiple energy-storage module mixing preparation system of photovoltaic generation and control method thereof
CN103929115A (en) * 2014-04-22 2014-07-16 武汉理工大学 Grid-connection and off-grid double-mode ship solar power generating system
CN105870961A (en) * 2016-03-29 2016-08-17 郑尧 Hybrid power system and power supply method
CN108599210A (en) * 2018-03-28 2018-09-28 中国电力科学研究院有限公司 A kind of echelon battery energy storage system and method for household photovoltaic power grid

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20131115

C17 Cessation of patent right