CN102891515A - Intelligent double-module photovoltaic power generation system - Google Patents

Intelligent double-module photovoltaic power generation system Download PDF

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Publication number
CN102891515A
CN102891515A CN2012104055521A CN201210405552A CN102891515A CN 102891515 A CN102891515 A CN 102891515A CN 2012104055521 A CN2012104055521 A CN 2012104055521A CN 201210405552 A CN201210405552 A CN 201210405552A CN 102891515 A CN102891515 A CN 102891515A
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CN
China
Prior art keywords
load
power generation
power
storage battery
controller
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
CN2012104055521A
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Chinese (zh)
Inventor
朱德志
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.)
ZHEJIANG DACHENG NEW ENERGY CO Ltd
Original Assignee
ZHEJIANG DACHENG NEW ENERGY CO Ltd
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Application filed by ZHEJIANG DACHENG NEW ENERGY CO Ltd filed Critical ZHEJIANG DACHENG NEW ENERGY CO Ltd
Priority to CN2012104055521A priority Critical patent/CN102891515A/en
Publication of CN102891515A publication Critical patent/CN102891515A/en
Pending 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
    • 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

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses an intelligent double-module photovoltaic power generation system which comprises a solar power generation assembly, an inverter, a storage battery, a load, a power grid, an inversion switch, a power grid switch and a controller, wherein the inverter and the storage battery are connected in parallel to be connected into the controller; the controller is connected with the solar power generation assembly; the load is connected into the inverter by the inversion switch; and the power grid is connected into the load by the power grid switch. The intelligent double-module photovoltaic power generation system has the advantages that the controller is used for automatically converting power grid-combined photovoltaic power generation and off-power grid photovoltaic power generation, so that solar energy resources and solar energy devices can be utilized to the maximum degree; the storage battery can be used for supplying power to the load when the power grid is failure in power; and under the condition that the power grid is in a good condition, power generated by solar power generation can meet power required by the load, and surplus power energy can be connected into the power grid, so that the solar energy resources can be fully utilized, and photovoltaic devices can be fully utilized. A 1KW photovoltaic power generation station can save power energy by 500KWh/year according to that an actual using load of a user is up to 50% of a designed load.

Description

A kind of Intelligent dual-mode photovoltaic generating system
Technical field
The present invention relates to a kind of electricity generation system, particularly a kind of Intelligent dual-mode photovoltaic generating system.
Background technology
Present photovoltaic generation is divided into 2 types: a kind of is parallel network power generation, and namely photovoltaic generates electricity and can directly be connected to the grid by inverter; Another kind is photovoltaic off-grid generating, and namely photovoltaic generates electricity to deposit in and passes through inverter behind the storage battery or directly for load, off-grid system can not access electrical network.
But all there is certain problem in these two kinds of photovoltaic generation types at present: for parallel network power generation, inverter also must turn-off simultaneously in electrical breakdown, otherwise can cause human casualty accident, and solar energy resources is wasted like this; Generate electricity for photovoltaic off-grid, when load is used seldom or is obsolete, after being full of storage battery, solar power generation then can stop generating, solar energy resources then is wasted and can't utilizes, and sometimes also has solar power generation and the possibly situation that can't satisfy its actual demand of storage battery electric energy in the very large situation of bearing power.
Along with the attention of environmental protection and energy saving and everybody to demand cheap, green energy resource, solar power generation may enter into more user and family, also just intelligence is incorporated into the power networks, has higher requirement from the net photovoltaic generating system, with the maximized utilization of solar energy resources.
Summary of the invention
Goal of the invention: for the problems referred to above, the purpose of this invention is to provide a kind of automatic conversion be incorporated into the power networks, from the intelligence system of net photovoltaic generation, solve when generating electricity by way of merging two or more grid systems user after the outage and can not use the photovoltaic solar electric energy and can not be connected to the grid and cause the problem of solar energy resources waste from net photovoltaic generating system unnecessary solar power generation resource when the load need for electricity is low.
Technical scheme: a kind of Intelligent dual-mode photovoltaic generating system, comprise solar power generation assembly, inverter, storage battery, load, electrical network, inverse switch, power network switch, also comprise controller, described inverter and described storage battery parallel connection are connected into described controller, described controller is connected with described solar power generation assembly, described load is connected into described inverter by described inverse switch, and described electrical network is connected into described load by described power network switch.
Described controller is preferential to be communicated with described solar power generation assembly to described charge in batteries.
Principle of the present invention is: controller detects accumulator electric-quantity, in the situation that storage battery quantity not sufficient controller control solar power generation assembly generating priority of supply charge in batteries, the unnecessary electric weight offered load of solar power generation assembly generating is used; Direct offered load is used in the situation that accumulator electric-quantity abundance controller control solar power generation assembly generates electricity, if the load power consumption less than solar power generation assembly energy output, then unnecessary electric weight is directly incorporated the upper level electrical network into; After the darkness or solar energy resources when not enough; controller sends instruction and cuts off mains supply; preferentially discharge electric energy to inverter by storage battery; direct current is converted to alternating current for load; when the storage battery electric energy satisfies the load electricity consumption; controller sends instruction access mains supply, and electrical network carries out charge protection to storage battery simultaneously, and it is rear stand-by that storage battery is full of electricity.
Beneficial effect: compared with prior art, advantage of the present invention be by controller automatically conversion be incorporated into the power networks, from the net photovoltaic generation, maximum using solar energy resources and solar facilities, in the situation that electrical breakdown by storage battery to load supplying, in the situation that the unnecessary electric energy that the good solar power generation of electrical network satisfies after load is used is connected to the grid, solar energy resources is fully utilized, photovoltaic apparatus is fully utilized.Reach according to user's actual load in 50% situation of Design cooling load, but 1KW photo-voltaic power generation station saves energy 500KWh/.
Description of drawings
Accompanying drawing is structural front view of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in drawings, a kind of Intelligent dual-mode photovoltaic generating system, comprise solar power generation assembly 1, inverter 2, storage battery 3, load 4, electrical network 5, inverse switch 6, power network switch 7, controller 8, inverter 2 and storage battery 3 parallel connections are connected into controller 8, controller 8 is connected with solar power generation assembly 1, load 4 is connected into described inverter 2 by inverse switch 6, and electrical network 5 is connected into load 4 by power network switch 7.Wherein:
Controller 8 is by detecting storage battery 3 electric weight, detecting load 4 electricity consumption situations, judge and send instruction in conjunction with storage battery 3 electric weight and load 4 power consumptions, cut-offfing of commander's power network switch 7, discharging and recharging of commander's storage battery 3, the work of commander's inverter 2 with stop, realizing generating electricity by way of merging two or more grid systems, from the automatic switchover of two kinds of patterns of net generating;
Introduce electrical network 5 when power network switch 7 closes a floodgate, disconnect electrical network 5 during shutoff;
Inverse switch 6 automatic disconnection in system failure situation, the cut-out photovoltaic system is communicated with load 4, electrical network 5;
Storage battery 3 is in order to preserve sun generating electric energy;
Inverter 2 is in order to can be converted to AC energy to accumulator DC for load 4.
When the present invention worked, controller 8 detected storage battery 3 electric weight, in the situation that 3 chargings of storage battery 3 electric weight deficiency controllers 8 control solar power generation assemblies 1 generating priority of supply storage battery, the unnecessary electric weight supply low-voltage load 4 of solar power generation assembly 1 generating uses; In the situation that directly supply low-voltage load 4 uses of storage battery 3 electric weight abundance controllers 8 control solar power generation assemblies 1 generating, if low-voltage load 4 power consumptions less than solar power generation assembly 1 energy output, then unnecessary electric weight is directly incorporated upper level electrical network 5 into; After the darkness or solar energy resources when not enough; controller 8 sends instruction and cuts off electrical network 5 power supplies; preferentially discharge electric energy to inverter 2 by storage battery 3; direct current is converted to alternating current for low-voltage load 4; when storage battery 3 electric energy satisfy low-voltage load 4 electricity consumption; controller 8 sends 5 power supplies of instruction access electrical network, and 5 pairs of storage batterys of electrical network 3 carry out charge protection simultaneously, and it is rear stand-by that storage battery 3 is full of electricity.

Claims (2)

1. Intelligent dual-mode photovoltaic generating system, comprise solar power generation assembly (1), inverter (2), storage battery (3), load (4), electrical network (5), inverse switch (6), power network switch (7), it is characterized in that: also comprise controller (8), described inverter (2) and described storage battery (3) parallel connection are connected into described controller (8), described controller (8) is connected with described solar power generation assembly (1), described load (4) is connected into described inverter (2) by described inverse switch (6), and described electrical network (5) is connected into described load (4) by described power network switch (7).
2. a kind of Intelligent dual-mode photovoltaic generating system according to claim 1, it is characterized in that: described controller (8) preferentially is communicated with described solar power generation assembly (1) described storage battery (3) is charged.
CN2012104055521A 2012-10-23 2012-10-23 Intelligent double-module photovoltaic power generation system Pending CN102891515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012104055521A CN102891515A (en) 2012-10-23 2012-10-23 Intelligent double-module photovoltaic power generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104055521A CN102891515A (en) 2012-10-23 2012-10-23 Intelligent double-module photovoltaic power generation system

Publications (1)

Publication Number Publication Date
CN102891515A true CN102891515A (en) 2013-01-23

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256866A (en) * 2021-11-03 2022-03-29 浙江大学杭州国际科创中心 Photovoltaic energy driven power grid power generation, vehicle charging and heat pump water heater coupling system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2847649Y (en) * 2005-11-24 2006-12-13 上海久能能源科技发展有限公司 Solar energy and electric grid switching inter compensating device
CN102097975A (en) * 2009-12-23 2011-06-15 珠海兴业新能源科技有限公司 Complementary solar power generation system
CN102655330A (en) * 2011-03-01 2012-09-05 上海盛阳鲁棒新能源科技有限公司 New energy resource electric power system and method thereof
CN102710005A (en) * 2012-06-04 2012-10-03 国电南瑞科技股份有限公司 Power supply method for grid-connected and off-grid dual-purpose wind and light complement power generation system
CN202888896U (en) * 2012-10-23 2013-04-17 镇江大成新能源有限公司 Intelligent bimodule photovoltaic power generation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2847649Y (en) * 2005-11-24 2006-12-13 上海久能能源科技发展有限公司 Solar energy and electric grid switching inter compensating device
CN102097975A (en) * 2009-12-23 2011-06-15 珠海兴业新能源科技有限公司 Complementary solar power generation system
CN102655330A (en) * 2011-03-01 2012-09-05 上海盛阳鲁棒新能源科技有限公司 New energy resource electric power system and method thereof
CN102710005A (en) * 2012-06-04 2012-10-03 国电南瑞科技股份有限公司 Power supply method for grid-connected and off-grid dual-purpose wind and light complement power generation system
CN202888896U (en) * 2012-10-23 2013-04-17 镇江大成新能源有限公司 Intelligent bimodule photovoltaic power generation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256866A (en) * 2021-11-03 2022-03-29 浙江大学杭州国际科创中心 Photovoltaic energy driven power grid power generation, vehicle charging and heat pump water heater coupling system

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Application publication date: 20130123