CN203056600U - A solar photovoltaic grid-connected power generation system for DC inverter air conditioners - Google Patents
A solar photovoltaic grid-connected power generation system for DC inverter air conditioners Download PDFInfo
- Publication number
- CN203056600U CN203056600U CN201220654508XU CN201220654508U CN203056600U CN 203056600 U CN203056600 U CN 203056600U CN 201220654508X U CN201220654508X U CN 201220654508XU CN 201220654508 U CN201220654508 U CN 201220654508U CN 203056600 U CN203056600 U CN 203056600U
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- CN
- China
- Prior art keywords
- inverter
- power
- solar photovoltaic
- conditioner
- electrical network
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- 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.)
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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 is a solar photovoltaic grid-connected power generation system for being used by direct-current variable frequency air-conditioners. The system comprises solar photovoltaic cell panels, power switches, power sockets, a transformer, a first inverter, a second inverter, a reverse-power protector, an alternating-current contactor respectively connected with the reverse-power protector and the power switches through data lines, and at least two direct-current variable frequency air-conditioners connected to a household power grid. The solar photovoltaic cell panels are connected to a solar photovoltaic power grid after sequentially passing through the power switches and the power sockets. The solar photovoltaic power grid is connected with the transformer. The transformer is respectively connected with the first inverter and the second inverter. The first inverter is connected with a commercial power grid and also connected with the second inverter. The second inverter is connected with one direct-current variable frequency air-conditioner after passing through the reverse-power protector, and the rest direct-current variable frequency air-conditioner is connected to the reverse-power protector and the power grid connected with the aforementioned direct-current variable frequency air-conditioner after passing through the alternating-current contactor. The solar photovoltaic grid-connected power generation system is capable of effectively overcoming defects existing in the utilization of the direct-current variable frequency air-conditioners.
Description
Technical field
The utility model relates to the technical field of electric power system, refers in particular to a kind of solar energy grid-connected photovoltaic system for the direct current varied-frequency air conditioner use.
Background technology
The power drives that present conventional DC frequency converting air-conditioner equipment generally adopts city's electrical network to provide, and along with exhaustion, the energy-saving and emission-reduction of the energy seem more and more urgent, and adopt emerging, clean energy resource band to substitute conventional energy resource, more and more come into one's own, just obtaining use more and more widely, solar energy just more and more comes into one's own as a kind of energy of cleaning, therefore the clean energy resource that adopts solar energy power generating to provide meets the policy needs of national energy-saving and emission-reduction.
And photovoltaic solar generating at present, because price is comparatively expensive, generating efficiency is not very high, and DC frequency converting air-conditioner equipment often uses power bigger, therefore the use on the DC frequency converting air-conditioner air-conditioning equipment, be subjected to bigger limitation always, and utilize the power supply technique that is incorporated into the power networks of solar energy power generating and civil power simultaneously, solar energy power generating is preferentially used, can effectively solve DC frequency converting air-conditioner and use a high-power difficult problem, it is investigated inquiry, adopt the be incorporated into the power networks DC frequency converting air-conditioner of power supply technique of photovoltaic and civil power, be in blank at present substantially.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of reliable, energy-conservation province reasonable in design consumption, the solar energy grid-connected photovoltaic system for the direct current varied-frequency air conditioner use that can reduce cost are provided.
For achieving the above object; technical scheme provided by the utility model is: a kind of solar energy grid-connected photovoltaic system for the direct current varied-frequency air conditioner use; it includes solar photovoltaic cell panel; mains switch; supply socket; transformer; first inverter; second inverter; the reverse power protection device; A.C. contactor and at least two DC frequency converting air-conditioners that insert family's electrical network; wherein; described solar photovoltaic cell panel is successively through inserting the photovoltaic electrical network after mains switch and the supply socket; described photovoltaic electrical network is connected in transformer; this transformer joins with first inverter and second inverter respectively; and described first inverter connects city's electrical network; and join with second inverter; join with a DC frequency converting air-conditioner behind described second inverter process reverse power protection device; remaining DC frequency converting air-conditioner is through on that section electrical network that is connected to reverse power protection device and above-mentioned that DC frequency converting air-conditioner behind A.C. contactor and joins; simultaneously, described A.C. contactor by data wire respectively with the reverse power protection device with mains switch is corresponding joins.
Described solar photovoltaic cell panel, mains switch, supply socket all have a plurality of.
The utility model is after having adopted such scheme, utilize solar energy power generating and civil power interconnection technology, the defective that can effectively overcome, avoid DC frequency converting air-conditioner in use to exist, the electric power that utilizes solar energy power generating to provide simultaneously, can guarantee DC frequency converting air-conditioner Zero-power-consumption standby truly, have huge realistic meaning.Specifically be described below:
1, the preferential function of use of solar energy power generating
Utilize first inverter and second inverter, the output voltage of solar energy power generating is exported to be higher than electrical network 1-2V, to guarantee that solar power generation preferentially uses in the electrical network;
2, reverse power protection function
When electrical equipment applied load in family's electrical network is lower than the solar power generation load, the inverse probability phenomenon can appear, reverse power protection this moment device reduces solar energy power generating power, avoid the electric power appearance in the electrical network excessive to city's electrical network phenomenon, thereby protection city electrical network is stable; When responding to less than inverse probability, the mode of then taking to be incorporated into the power networks comes into operation solar power system step by step.
Description of drawings
Fig. 1 is fundamental diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
Shown in accompanying drawing 1, the described solar energy grid-connected photovoltaic system for the direct current varied-frequency air conditioner use of present embodiment, it includes solar photovoltaic cell panel, mains switch, supply socket, transformer 4, first inverter 5, second inverter 6, reverse power protection device 7, A.C. contactor 8 and three DC frequency converting air-conditioners that insert family's electrical network 11, wherein, described solar photovoltaic cell panel has three, is respectively solar photovoltaic cell panel 1A, solar photovoltaic cell panel 1B, solar photovoltaic cell panel 1C; Described mains switch has three, is respectively mains switch 2A, mains switch 2B, mains switch 2C; Described supply socket has three, is respectively supply socket 3A, supply socket 3B, supply socket 3C; Described solar photovoltaic cell panel 1A is successively through inserting photovoltaic electrical network 12 behind mains switch 2A and the supply socket 3A; described solar photovoltaic cell panel 1B is successively through inserting photovoltaic electrical network 12 behind mains switch 2B and the supply socket 3B; described solar photovoltaic cell panel 1C is successively through inserting photovoltaic electrical network 12 behind mains switch 2C and the supply socket 3C; simultaneously; described photovoltaic electrical network 12 is connected in transformer 4; described transformer 4 joins with first inverter 5 and second inverter 6 respectively; and described first inverter 5 connects city's electrical network 10; and join with second inverter 6; described second inverter 6 joins with a DC frequency converting air-conditioner 9A through reverse power protection device 7 backs; remaining two DC frequency converting air-conditioner 9B; 9C is through on that section electrical network that is connected to reverse power protection device 7 and above-mentioned that DC frequency converting air-conditioner 9 behind the A.C. contactor 8 and joins; simultaneously, described A.C. contactor 8 by data wire respectively with reverse power protection device 7 and mains switch 2A; mains switch 2B; mains switch 2C correspondence one by one joins.
During use; solar photovoltaic cell panel 1A; solar photovoltaic cell panel 1B; solar photovoltaic cell panel 1C respectively in parallel; by mains switch 2A; mains switch 2B; mains switch 2C; supply socket 3A; supply socket 3B; supply socket 3C; realize being incorporated into the power networks being connected with photovoltaic electrical network 12; on the one hand; the power supply that city's electrical network 10 provides is through 5 inversions of first inverter; be reverse into the DC power supply of direct current 310V; in addition on the one hand; the solar panel that realization is incorporated into the power networks after connecting is exported direct current 24V voltage; through transformer 4 transformations; boost and be the high 1～2V voltage of 310V direct current than civil power inversion; be that the direct current of 310V is incorporated into the power networks with city's electrical network 10 transformations then; jointly to 11 power supplies of family's electrical network; guarantee the preferential solar photovoltaic electric power that uses; 310V direct current after realization is incorporated into the power networks; again through 6 inversions of second inverter; be reverse into three-phase four-wire system; phase voltage is that 380V(line voltage is 220V) 180 the degree the three phase sine alternating currents; offering DC frequency converting air-conditioner 9A uses; in use; when reverse power protection device 7 is sensed city's electrical network 10 the inverse probability phenomenon is arranged; reverse power protection this moment device 7 action at once; give A.C. contactor 8 by data wire 13 transmission signals; connect A.C. contactor 8, excrescent electric power is dropped into family's electrical network 11, for DC frequency converting air-conditioner 9B; 9C uses.
DC frequency converting air- conditioner 9B, 9C in family's electrical network 11 do not use; or applied load is when low; reverse power protection device 7 is sensed city's electrical network 10 the inverse probability phenomenon; reverse power protection device 7 action at once; give mains switch 2A, mains switch 2B, mains switch 2C by data wire 13 transmission signals; turn-off solar photovoltaic cell panel 1A, solar photovoltaic cell panel 1B, solar photovoltaic cell panel 1C step by step, the DC frequency converting air-conditioners that the electric power that makes solar energy power generating provide just reaches in family's electrical network 11 preferentially use.
As DC frequency converting air- conditioner 9A, 9B in family's electrical network 11, when 9C all comes into operation; reverse power protection device 7 is not sensed city's electrical network 10 the inverse probability phenomenon; give mains switch 2A, mains switch 2B, mains switch 2C by data wire 13 transmission signals this moment; drop into solar photovoltaic cell panel 1A, solar photovoltaic cell panel 1B, solar photovoltaic cell panel 1C step by step, the DC frequency converting air-conditioner that the electric power that makes solar energy power generating provide just enough satisfies in family's electrical network 11 preferentially uses.
Remarks: family's electrical network 11 provides three phase network, and during actual the use, family's air-conditioning is taked concrete power supply power supply as required.
The examples of implementation of the above are the preferred embodiment of the utility model only, are not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection range of the present utility model.
Claims (2)
1. solar energy grid-connected photovoltaic system that uses for direct current varied-frequency air conditioner; it is characterized in that: it includes solar photovoltaic cell panel; mains switch; supply socket; transformer (4); first inverter (5); second inverter (6); reverse power protection device (7); A.C. contactor (8) and at least two DC frequency converting air-conditioners that insert family's electrical network (11); wherein; described solar photovoltaic cell panel is successively through inserting photovoltaic electrical network (12) after mains switch and the supply socket; described photovoltaic electrical network (12) is connected in transformer (4); this transformer (4) joins with first inverter (5) and second inverter (6) respectively; and described first inverter (5) connects city's electrical network (10); and join with second inverter (6); described second inverter (6) joins with a DC frequency converting air-conditioner through reverse power protection device (7) back; remaining DC frequency converting air-conditioner is connected to after through A.C. contactor (8) on that section electrical network that reverse power protection device (7) and above-mentioned that DC frequency converting air-conditioner join; simultaneously, described A.C. contactor (8) by data wire (13) respectively with reverse power protection device (7) with mains switch is corresponding joins.
2. a kind of solar energy grid-connected photovoltaic system that uses for direct current varied-frequency air conditioner according to claim 1, it is characterized in that: described solar photovoltaic cell panel, mains switch, supply socket all have a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220654508XU CN203056600U (en) | 2012-12-03 | 2012-12-03 | A solar photovoltaic grid-connected power generation system for DC inverter air conditioners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220654508XU CN203056600U (en) | 2012-12-03 | 2012-12-03 | A solar photovoltaic grid-connected power generation system for DC inverter air conditioners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203056600U true CN203056600U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220654508XU Expired - Lifetime CN203056600U (en) | 2012-12-03 | 2012-12-03 | A solar photovoltaic grid-connected power generation system for DC inverter air conditioners |
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| Country | Link |
|---|---|
| CN (1) | CN203056600U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822329A (en) * | 2013-12-02 | 2014-05-28 | 广东志高空调有限公司 | Household air-conditioning circuit system adopting solar energy for auxiliary power supply |
| CN106787097A (en) * | 2016-12-09 | 2017-05-31 | 康金沙 | A kind of solar airconditioning electric power system |
| CN110277801A (en) * | 2019-07-01 | 2019-09-24 | 珠海格力电器股份有限公司 | Power control method and device for microgrid |
-
2012
- 2012-12-03 CN CN201220654508XU patent/CN203056600U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822329A (en) * | 2013-12-02 | 2014-05-28 | 广东志高空调有限公司 | Household air-conditioning circuit system adopting solar energy for auxiliary power supply |
| CN103822329B (en) * | 2013-12-02 | 2017-03-29 | 广东志高空调有限公司 | A kind of domestic air conditioning circuit system of employing solar energy auxiliary power supply |
| CN106787097A (en) * | 2016-12-09 | 2017-05-31 | 康金沙 | A kind of solar airconditioning electric power system |
| CN110277801A (en) * | 2019-07-01 | 2019-09-24 | 珠海格力电器股份有限公司 | Power control method and device for microgrid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
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| CX01 | Expiry of patent term |