CN202696178U - Photovoltaic electric grid-connected and off-grid integration device - Google Patents
Photovoltaic electric grid-connected and off-grid integration device Download PDFInfo
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- CN202696178U CN202696178U CN2012203709092U CN201220370909U CN202696178U CN 202696178 U CN202696178 U CN 202696178U CN 2012203709092 U CN2012203709092 U CN 2012203709092U CN 201220370909 U CN201220370909 U CN 201220370909U CN 202696178 U CN202696178 U CN 202696178U
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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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Abstract
The utility model belongs to the field of new energy electric power, in particular photovoltaic power, and more particularly relates to a photovoltaic power grid-connected and off-grid integration device. The photovoltaic power grid-connected and off-grid integration device is used for independently implementing intelligent regulation and control on each loop of a power electronic control circuit, a converter circuit and a monitoring circuit to form various electric power paths corresponding to corresponding electric power and power supply modes and meet the different requirements of power generation, power supply, electric power storage and power feed, and the photovoltaic electric grid-connected and off-grid integration device is constructed by using least system equipment resources and is enabled to achieve the grid-connected and off-grid power generation and power supply purposes which can be finished by a grid-connected system and an off-grid system; and the photovoltaic electric grid-connected and off-grid integration device which is used as a user-side power generation and power supply system is connected with a power grid to realize a controlled system device which has no limitation to power consumption and is used for carrying out controlled execution on electricity fed to the power grid; the photovoltaic electric grid-connected and off-grid integration device is a power grid-friendly power consumption and power supply node system device and effectively realizes combination of a photovoltaic system and a load; photovoltaic power can be used while being generated and can be consumed nearby; electricity for processes of controlled grid-connection (to a commercial power grid or a microgrid), electricity feed, electricity selling and electricity purchasing is subjected to bidirectional electric interaction, so that the peak adjusting capability and the robustness of the power grid are enhanced at the same time that the cost performance of the photovoltaic power generation and power supply system is increased; and the photovoltaic electric grid-connected and off-grid integration device is an effective mode of intelligent fusion of new energy power and the power grid.
Description
[001] technical field
[002] the utility model belongs to particularly photovoltaic electric power field of new forms of energy electric power, is specifically related to a kind of photovoltaic electric power and is incorporated into the power networks from the net integrated apparatus.
[003] background technology
[004] the photovoltaic electric power grid-connected system is a kind of mode of generally using, and occupation mode adds that simply government fosters and subsidy economically, has promoted large quantities of project applications; From technical standpoint, this application mode also needs considerable technical measures and means to cooperate concerning electrical network, this is because its generating directly offers electrical network, through user's ability electricity consumption after high tension transmission and the secondary power transformation, its exchange of electric power and conveying have increased input and the power loss of electric power facility; Neither an efficient way, the just a kind of easy application mode under certain scale from effect.
[005] and the mode that another kind of photovoltaic electric power is generally used is from the net electricity generating and supplying system, generating directly offers load, power supplying efficiency is relatively high, but, because photovoltaic electric power is unstable and intermittent, to requiring the load of stable power-supplying, then need by supply load after the storage battery electric power storage, although compare with photovoltaic parallel in system, the consume of electric power transfer has reduced, and has reduced grid power transmission, the facility of power transformation drops into, but increased the investment of storage battery and corresponding establishment, and storage battery cost and life-span are higher at present, so that electric cost is multiplied, do not possess the photovoltaic electric power marketization on the universal significance.
[006] for solving the defects of prior art and application product, make photovoltaic electric power and the net electricity (that is: the electric power of utility grid and little electrical network) can be rationally and the fusion of science complementation, compare with the application mode that photovoltaic plant (power plant) generates electricity by way of merging two or more grid systems, being more suitable for generator unit in the more situation of photovoltaic electric power combines with load, namely send out namely and use, dissolve controlled being incorporated into the power networks nearby; This also is the best applications mode of the generally acknowledged photovoltaic electric power of global industry.
[007] summary of the invention
[008] the utility model proposes a kind of photovoltaic electric power for this reason be incorporated into the power networks from the net integrated apparatus, comprising: photovoltaic electrification component access interface, DC/DC and MPPT module, discharge and recharge and direct current dispensable circuit, batteries A, batteries B, DC/AC inversion module, AC/DC module, system regulation device, grid-connected island testing circuit, electronic power switch A, electronic power switch B, electronic power switch C, electronic power switch D, electric power monitoring circuit, system power supply, system bus, the feed port that is incorporated into the power networks, mains supply port, net electricity, user load; It is characterized in that:
[009] photovoltaic electrification component access interface, DC/DC and MPPT module, discharge and recharge and direct current dispensable circuit, DC/AC inversion module, electronic power switch A, electric power monitoring circuit to user load links to each other in turn; Photovoltaic electrification component access interface, DC/DC and MPPT module, discharge and recharge and direct current dispensable circuit, DC/AC inversion module, electronic power switch C, grid-connected island testing circuit, the feed port that is incorporated into the power networks link to each other in turn to netting electricity; Photovoltaic electrification component access interface, DC/DC and MPPT module, discharge and recharge and the direct current dispensable circuit links to each other in turn to batteries A and batteries B; Net electricity, mains supply port, electronic power switch D, AC/DC module, discharge and recharge and the direct current dispensable circuit continuous in turn to batteries A and batteries B; Net electricity, mains supply port, electronic power switch B, electric power monitoring circuit to user load link to each other in turn; System power supply connect respectively discharge and recharge and direct current dispensable circuit and system regulation device and by system bus and DC/DC and MPPT module, discharge and recharge and direct current dispensable circuit, DC/AC inversion module, AC/DC module, grid-connected island testing circuit, electronic power switch A, electronic power switch B, electronic power switch C, electronic power switch D and electric power monitoring circuit link to each other; The system regulation device by system bus and DC/DC and MPPT module, discharge and recharge and direct current dispensable circuit, DC/AC inversion module, AC/DC module, grid-connected island testing circuit, electronic power switch A, electronic power switch B, electronic power switch C, electronic power switch D and electric power monitoring circuit link to each other.
[010] the utility model constructs a kind of photovoltaic electric power with minimum system equipment resource and is incorporated into the power networks from the net integrated apparatus, need not with being incorporated into the power networks and finishing the function that is incorporated into the power networks with from two purposes of net from net two complete equipments, realized that effectively photovoltaic system is combined with load, realized that namely sending out namely of photovoltaic electric power use, dissolve nearby, controlled being incorporated into the power networks (to utility grid or little electrical network) feed is sold electricity and buys electric electricity consumption bi-directional electric power interactive; Owing to can realize the controlled two-way complementary electric power that is incorporated into the power networks, photovoltaic electric power is incorporated into the power networks from the net integrated apparatus so that photovoltaic electric power can become friendly power node system, can become the systematic electricity controlled fusion electric with net, namely can be peak load regulation network can meet an urgent need when electric network fault again and be incorporated into the power networks, strengthened the robustness of electrical network, simultaneously photovoltaic electric power is incorporated into the power networks and utilizes paddy valency electricity to replenish photovoltaic night without the defective of electricity by storage battery electric power storage power supply from the net integrated apparatus, greatly reduce the storage battery input quantity, the economy that has improved photovoltaic electric power becomes the effective technology means of the photovoltaic electric power marketization.
[011] description of drawings
[012] accompanying drawing is that a kind of photovoltaic electric power is incorporated into the power networks from the schematic block diagram of net integrated apparatus.
[013] embodiment
[014] as examples of implementation, a kind of photovoltaic electric power of the present utility model is incorporated into the power networks is described from the net integrated apparatus by reference to the accompanying drawings, and still, technology of the present utility model and scheme are not limited to the content that the present embodiment provides.
[015] accompanying drawing has provided a kind of photovoltaic electric power and has been incorporated into the power networks from the theory diagram of net integrated apparatus.Shown in accompanying drawing, a kind of photovoltaic electric power that the utility model proposes is incorporated into the power networks from the net integrated apparatus, comprising: photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), batteries A (4a), batteries B (4b), DC/AC inversion module (5), AC/DC module (6), system regulation device (7), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d), electric power monitoring circuit (10), system power supply (11), system bus (12), the feed port that is incorporated into the power networks (13a), mains supply port (13b), net electricity (14), user load (15); It is characterized in that:
[031] photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), electronic power switch A (9a), electric power monitoring circuit (10) to user load (15) links to each other in turn, consist of photovoltaic generation power supply electrical path;
[016] photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), electronic power switch C (9c), grid-connected island testing circuit (8), the feed port that is incorporated into the power networks (13a) to net electricity (14) links to each other in turn, consist of photovoltaic power generation grid-connecting and sell electric electrical path;
[017] photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3) links to each other in turn to batteries A (4a) and batteries B (4b), consist of photovoltaic generation electric power storage electrical path;
[018] net electricity (14), mains supply port (13b), electronic power switch D (9d), AC/DC module (6), discharge and recharge and direct current dispensable circuit (3) links to each other in turn to batteries A (4a) and batteries B (4b), consist of the net electricity and mend electric charging power path;
[019] net electricity (14), mains supply port (13b), electronic power switch B (9b), electric power monitoring circuit (10) to user load (15) link to each other in turn, consist of the electric electricity consumption supply path of net;
[020] system power supply (11) connects respectively and discharges and recharges and direct current dispensable circuit (3) and system regulation device (7) and by system bus (12) and DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), AC/DC module (6), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d) and electric power monitoring circuit (10) link to each other, construction system Power supply path;
[021] system regulation device (7) by system bus (12) and DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), AC/DC module (6), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d) and electric power monitoring circuit (10) link to each other, consist of control and monitor signal link;
[022] a kind of photovoltaic electric power of the utility model is incorporated into the power networks from the net integrated apparatus, and its operation with the method for regulation and control is:
Photovoltaic electric power is incorporated into the power networks and is started by system power supply (11) power supply from the net integrated apparatus, and system regulation device (7) is regulated and control by the generating powering mode, that is:
[023] generating supplies load model: system regulation device (7) regulation and control electronic power switch A (9a) closure, and electronic power switch C (9c) and electronic power switch B (9b) turn-off;
[024] electricity generation grid-connecting is sold power mode: after system regulation device (7) is received the controlled information that is incorporated into the power networks, and regulation and control electronic power switch C (9c) closure, electronic power switch A (9a) and electronic power switch B (9b) turn-off;
[025] generating supplies the electric power storage pattern: system regulation device (7) regulation and control electronic power switch D (9d) turn-off;
[026] net is electric for the load power mode: system regulation device (7) regulation and control electronic power switch B (9b) closure, and electronic power switch A (9a) and electronic power switch C (9c) turn-off;
[027] the net electricity is mended electric charge mode: system regulation device (7) regulation and control electronic power switch D (9d) closure, and electronic power switch C (9c) and electronic power switch C (9c) turn-off;
[028] electric power storage supplies the load supplying pattern: system regulation device (7) regulation and control electronic power switch A (9a) closure, and electronic power switch B (9b) and electronic power switch C (9c) turn-off;
[029] electric power storage is incorporated into the power networks and is sold power mode: after system regulation device (7) is received the controlled information that is incorporated into the power networks, and regulation and control electronic power switch C (9c) closure, electronic power switch A (9a) and electronic power switch B (9b) turn-off.
[030] a kind of photovoltaic electric power of the utility model is incorporated into the power networks from the net integrated apparatus, its operation can be set combinatorial regulation according to demand with the regulate and control method powering mode that also is to generate electricity, that is: generating is sold power mode for load model and electricity generation grid-connecting and generating is regulated and control for electric power storage pattern common combination; The net electricity is mended electric charge mode common combination regulation and control for load power mode and net electricity; Electric power storage supplies load supplying pattern and electric power storage to be incorporated into the power networks and sells the regulation and control of power mode common combination; Can also set the respective combination control methods according to particular demands.
[031] a kind of photovoltaic electric power of the utility model realization is incorporated into the power networks from the net integrated apparatus, by the system regulation device to power electronics control circuit and convertor circuit, the links of observation circuit is independently implemented intelligent control, consist of multiple electrical path and corresponding to corresponding electric power and powering mode, satisfy different generatings, power supply, the demand of electric power storage and feed, constructing a kind of photovoltaic electric power with minimum system equipment resource is incorporated into the power networks from the net integrated apparatus, it is possessed is incorporated into the power networks and from being incorporated into the power networks of can finishing of net two cover system equipment and from two kinds of generating power supplies of net purposes, and be connected with electrical network as user's side electricity generating and supplying system, realized that electricity consumption is unrestricted and to the controlled system device of electrical network feed controlled execution, become the node system device of the friendly type electricity consumption power supply of electrical network, realized that effectively photovoltaic system is combined with load, photovoltaic electric power is namely sent out namely and is used, dissolve nearby, controlled being incorporated into the power networks (to utility grid or little electrical network) feed is sold electricity and buys electric electricity consumption bi-directional electric power interactive, having strengthened peak modulation capacity and the robustness of electrical network when increasing photovoltaic generation electric power system cost performance, is the effective means of new forms of energy electric power and electrical network Intelligent Fusion.
Claims (1)
1. a photovoltaic electric power is incorporated into the power networks from the net integrated apparatus, comprising: photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), batteries A (4a), batteries B (4b), DC/AC inversion module (5), AC/DC module (6), system regulation device (7), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d), electric power monitoring circuit (10), system power supply (11), system bus (12), the feed port that is incorporated into the power networks (13a), mains supply port (13b), net electricity (14), user load (15); It is characterized in that:
Photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), electronic power switch A (9a), electric power monitoring circuit (10) to user load (15) links to each other in turn; Photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), electronic power switch C (9c), grid-connected island testing circuit (8), the feed port that is incorporated into the power networks (13a) to net electricity (14) links to each other in turn; Photovoltaic electrification component access interface (1), DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3) links to each other in turn to batteries A (4a) and batteries B (4b); Net electricity (14), mains supply port (13b), electronic power switch D (9d), AC/DC module (6), discharge and recharge and direct current dispensable circuit (3) links to each other in turn to batteries A (4a) and batteries B (4b); Net electricity (14), mains supply port (13b), electronic power switch B (9b), electric power monitoring circuit (10) to user load (15) link to each other in turn; System power supply (11) connects respectively and discharges and recharges and direct current dispensable circuit (3) and system regulation device (7) and by system bus (12) and DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), AC/DC module (6), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d) and electric power monitoring circuit (10) link to each other; System regulation device (7) by system bus (12) and DC/DC and MPPT module (2), discharge and recharge and direct current dispensable circuit (3), DC/AC inversion module (5), AC/DC module (6), grid-connected island testing circuit (8), electronic power switch A (9a), electronic power switch B (9b), electronic power switch C (9c), electronic power switch D (9d) and electric power monitoring circuit (10) link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203709092U CN202696178U (en) | 2012-07-31 | 2012-07-31 | Photovoltaic electric grid-connected and off-grid integration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203709092U CN202696178U (en) | 2012-07-31 | 2012-07-31 | Photovoltaic electric grid-connected and off-grid integration device |
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| CN202696178U true CN202696178U (en) | 2013-01-23 |
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| CN2012203709092U Expired - Lifetime CN202696178U (en) | 2012-07-31 | 2012-07-31 | Photovoltaic electric grid-connected and off-grid integration device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199564A (en) * | 2013-04-18 | 2013-07-10 | 山东圣阳电源股份有限公司 | Intelligent power grid distributed self-supporting photovoltaic power supply system |
| CN103746405A (en) * | 2014-02-06 | 2014-04-23 | 云南万富行节能有限公司 | Photovoltaic off-grid/grid-connection integrated control system |
| CN109494788B (en) * | 2018-11-08 | 2020-09-29 | 珠海格力电器股份有限公司 | Photovoltaic electrical appliance system and voltage protection value control method and device thereof |
-
2012
- 2012-07-31 CN CN2012203709092U patent/CN202696178U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199564A (en) * | 2013-04-18 | 2013-07-10 | 山东圣阳电源股份有限公司 | Intelligent power grid distributed self-supporting photovoltaic power supply system |
| CN103199564B (en) * | 2013-04-18 | 2015-07-15 | 山东圣阳电源股份有限公司 | Intelligent power grid distributed self-supporting photovoltaic power supply system |
| CN103746405A (en) * | 2014-02-06 | 2014-04-23 | 云南万富行节能有限公司 | Photovoltaic off-grid/grid-connection integrated control system |
| CN109494788B (en) * | 2018-11-08 | 2020-09-29 | 珠海格力电器股份有限公司 | Photovoltaic electrical appliance system and voltage protection value control method and device thereof |
| US20210384721A1 (en) * | 2018-11-08 | 2021-12-09 | Gree Electric Appliances, Inc. Of Zhuhai | Photovoltaic Electric Appliance System, Method and Device of Controlling Voltage Protection Value Thereof |
| US11831151B2 (en) | 2018-11-08 | 2023-11-28 | Gree Electric Appliances, Inc. Of Zhuhai | Photovoltaic electric appliance system, method and device of controlling voltage protection value thereof |
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Effective date of registration: 20160615 Address after: 100000, 326, North block, building 2, building 1, East Road, Fengtai District Automobile Museum, Beijing, China Patentee after: BEIJING TIANSHI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 100102 Chaoyang District, South Lake Road, No. 8, North building, room 2, room, No. 301 Patentee before: Zhou Xiwei |
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Addressee: BEIJING TIANSHI NEW ENERGY TECHNOLOGY CO.,LTD. Document name: Notification of Passing Examination on Formalities |
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Effective date of registration: 20200304 Address after: 100025 A218, 2nd Floor, Building A, Shifoying Xili 12, Chaoyang District, Beijing Patentee after: Beijing Tianqi Hongyuan New Energy Technology Co.,Ltd. Address before: 100000, 326, North block, building 2, building 1, East Road, Fengtai District Automobile Museum, Beijing, China Patentee before: BEIJING TIANSHI NEW ENERGY TECHNOLOGY CO.,LTD. |
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Addressee: BEIJING TIANSHI NEW ENERGY TECHNOLOGY Co.,Ltd. Document name: Notification of Passing Examination on Formalities |
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