CN105743125A - Grid-connected inversion control device and grid-connected power generation system - Google Patents
Grid-connected inversion control device and grid-connected power generation system Download PDFInfo
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- CN105743125A CN105743125A CN201610233182.6A CN201610233182A CN105743125A CN 105743125 A CN105743125 A CN 105743125A CN 201610233182 A CN201610233182 A CN 201610233182A CN 105743125 A CN105743125 A CN 105743125A
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- inversion module
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- alternating current
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- 238000010248 power generation Methods 0.000 title abstract 3
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- H02J3/383—
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
Abstract
The invention discloses a grid-connected inversion control device. The grid-connected inversion control device comprises an inversion module, a control module, an input end and an AC output end, wherein the control module comprises a DC convergence unit and an AC power distribution unit, the inversion module is electrically connected with a DC input end through the DC convergence unit and electrically connected with an AC output end through the AC power distribution unit, the DC convergence unit is used for converging and transmitting direct current input from the DC input end to the inversion module, the inversion module is used for converting the direct current transmitted from the DC input end to alternating current, the AC power distribution unit is used for transmitting the alternating current after conversion of the inversion module to the AC output end, and the inversion module and the control module are of an integrated structure. With the above grid-connected inversion control device, the power efficiency of a grid-connected power generation system can be improved. The invention also discloses the grid-connected power generation system.
Description
Technical field
The present invention relates to control technical field of generating electricity by way of merging two or more grid systems, particularly relate to a kind of parallel network reverse and control device and grid-connected system.
Background technology
Distributed photovoltaic grid-connected system is made up of photovoltaic module, photovoltaic bracket, direct current conflux case, combining inverter, A.C. distribution box etc..Solar energy is converted directly into direct current energy by photovoltaic module, confluxes through direct current conflux case.Unidirectional current after confluxing, after combining inverter inversion, is converted to the alternating current that load needs, eventually passes A.C. distribution box, photovoltaic system is linked into electrical network.
In traditional photovoltaic parallel in system, combining inverter and A.C. distribution box are separate design, it is necessary to by ac power cable, combining inverter is connected with A.C. distribution box.And combining inverter and A.C. distribution box distant time, connection cable between the two is longer, can reduce the generated energy of photovoltaic system largely, affects the generating efficiency of grid-connected photovoltaic system.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, it is provided that a kind of grid-connected system that enables to has parallel network reverse control device and the grid-connected system of higher electrical generation efficiency.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of parallel network reverse controls device, including inversion module, controls module, direct-flow input end and ac output end；Described control module includes direct current joining unit and Alternating Current Unit；Described inversion module is electrically connected with described direct-flow input end by described direct current joining unit, and described inversion module is electrically connected with described ac output end by described Alternating Current Unit；
Described direct current joining unit is for confluxing the unidirectional current inputted by described direct-flow input end and transmitting to described inversion module；
Described inversion module is for being converted to alternating current by the unidirectional current come by the transmission of described direct-flow input end；
Described Alternating Current Unit is for by the alternating current transmission after described inversion module is changed to described ac output end；
Described inversion module and described control module are structure as a whole.
Preferably, described control module also includes monitoring unit；Described monitoring unit is connected with described inversion module, is used for gathering power information, and sends the power information collected to mobile terminal；
Described power information includes at least one in voltage, electric current and generated energy.
Preferably, described monitoring unit is connected with mobile terminal by RS485 or WIFI.
Preferably, described direct current joining unit includes the first chopper and the first lightning protection device；
Described inversion module is electrically connected with described direct-flow input end by described first chopper；
Described first lightning protection device is arranged between described inversion module and described first chopper.
Preferably, described Alternating Current Unit includes the first isolation switch and more than one chopper；
Described inversion module passes sequentially through each chopper and described first isolation switch electrically connects with described ac output end.
Preferably, described Alternating Current Unit also includes the second lightning protection device；Described second lightning protection device is arranged between described first isolation switch and described chopper.
The present invention also proposes a kind of grid-connected system, controls device including electrification component and any one parallel network reverse above-mentioned；The direct-flow input end that described electrification component controls device with described parallel network reverse electrically connects, and described parallel network reverse controls the ac output end of device for electrically connecting with electrical network.
Adopt and have the beneficial effects that produced by technique scheme: above-mentioned parallel network reverse controls device and inversion module and control module are arranged to integrative-structure, it is possible to increase the matching of total system, improves the generating efficiency of grid-connected system.Further, monitoring unit is set and can send the electric power data of grid-connected system in real time, be pushed to the mobile terminals such as mobile phone, help client to grasp the traffic-operating period in power station in real time.
Accompanying drawing explanation
Fig. 1 is the structural representation that parallel network reverse of the present invention controls device；
Fig. 2 is the circuit diagram that parallel network reverse of the present invention controls in one embodiment of device.
In figure: 100, parallel network reverse controls device；110, inversion module；120, module is controlled；121, direct current joining unit；122, Alternating Current Unit；123, monitoring unit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As it is shown in figure 1, in an embodiment, parallel network reverse controls device 100 and can include inversion module 110, control module 120, direct-flow input end A and ac output end B.Control module 120 and include direct current joining unit 121 and Alternating Current Unit 122.Inversion module 110 is electrically connected with direct-flow input end A by direct current joining unit 121.Inversion module 110 is electrically connected with ac output end B by Alternating Current Unit 122.Direct current joining unit 121 is for confluxing the unidirectional current inputted by direct-flow input end A and transmitting to inversion module 110.Inversion module 110 is for being converted to alternating current by the unidirectional current come by direct-flow input end A transmission.Alternating Current Unit 122 is for by the alternating current transmission after inversion module 110 is changed to ac output end B.And inversion module 110 and control module 120 are structure as a whole.
Referring to Fig. 2, in an embodiment, direct current joining unit 121 can include the first circuit breaker Q F1 and the first lightning protection device FL1.Inversion module 110 is electrically connected with direct-flow input end A by the first circuit breaker Q F1.First lightning protection device FL1 is arranged between inversion module 110 and the first circuit breaker Q F1.
Same, Alternating Current Unit 122 can include the first isolation switch and more than one chopper.Inversion module 110 passes sequentially through each chopper and the first isolation switch electrically connects with ac output end B.Referring to Fig. 2, in an embodiment, Alternating Current Unit 122 includes the first isolation switch QS1, circuit breaker Q F2 and circuit breaker Q F3.Inversion module 110 passes sequentially through circuit breaker Q F2, circuit breaker Q F3 and the first isolation switch QS1 electrically connects with ac output end B.It addition, Alternating Current Unit 122 can also include the second lightning protection device.Referring to Fig. 2, the second lightning protection device FL2 can be arranged between the first isolation switch QS1 and circuit breaker Q F3.
It addition, referring to Fig. 2, control module 120 is additionally provided with external ground wire.This is external ground wire grounded such that it is able to make the first lightning protection device FL1 and the second lightning protection device FL2 ground connection in controlling module 120.
Preferably, control module 120 and also include monitoring unit 123.Monitoring unit 123 is connected with inversion module 110, is used for gathering power information, and sends the power information collected to mobile terminal.Wherein, power information can include at least one information in voltage, electric current and generated energy.In one embodiment, monitoring unit 123 can pass through RS485 or WIFI(WirelessFidelity, Wireless Fidelity) etc. mode by power information send to mobile terminal, to facilitate user to check, but be not limited thereto.In other embodiments, power information can also be sent to mobile terminal by monitoring unit 123 by other means, to facilitate user to check.
The work process that parallel network reverse controls device 100 below is described in detail.In the present embodiment, direct-flow input end A electrically connects with electrification component, and ac output end B electrically connects with electrical network.Solar energy is converted directly into direct current energy by electrification component.This direct current energy is by, after the confluxing of direct-flow input end A and direct current joining unit 121, being transferred in inversion module 110.Unidirectional current is converted to satisfactory alternating current by inversion module 110.This alternating current is transferred to ac output end B through Alternating Current Unit 122, and is finally transferred to electrical network.
Above-mentioned parallel network reverse controls device 100 and inversion module 110 and control module 120 is arranged to integrative-structure, it is possible to increase the matching of total system, improves the generating efficiency of grid-connected system, additionally it is possible to reduce construction and installation cost and outward appearance better appearance.Meanwhile, also increase monitoring unit 123 such that it is able to send the electric power data of grid-connected system in real time, be pushed to the mobile terminals such as mobile phone, help client to grasp the traffic-operating period in power station in real time.The mounting means of wall hanging can being adopted to be arranged on predeterminated position it addition, above-mentioned parallel network reverse controls device 100, volume is little, lightweight, installs simple, easy to operate.
It addition, an embodiment also proposes a kind of grid-connected system.This grid-connected system can include electrification component and any one parallel network reverse above-mentioned controls device 100.The direct-flow input end A that electrification component controls device 100 with parallel network reverse electrically connects, and parallel network reverse controls the ac output end B of device 100 for electrically connecting with electrical network.Above-mentioned grid-connected system has above-mentioned parallel network reverse and controls device 100 have the advantage that.Above-mentioned electrification component can be photovoltaic electrification component, it is also possible to for wind-power electricity generation assembly, it is also possible to for the electrification component of other forms.Corresponding, above-mentioned grid-connected system can be grid-connected photovoltaic system, it is also possible to for wind power grid-connected generating system, it is also possible to for the grid-connected system of other forms.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (7)
1. a parallel network reverse controls device, it is characterised in that includes inversion module, control module, direct-flow input end and ac output end；Described control module includes direct current joining unit and Alternating Current Unit；Described inversion module is electrically connected with described direct-flow input end by described direct current joining unit, and described inversion module is electrically connected with described ac output end by described Alternating Current Unit；
Described direct current joining unit is for confluxing the unidirectional current inputted by described direct-flow input end and transmitting to described inversion module；
Described inversion module is for being converted to alternating current by the unidirectional current come by the transmission of described direct-flow input end；
Described Alternating Current Unit is for by the alternating current transmission after described inversion module is changed to described ac output end；
Described inversion module and described control module are structure as a whole.
2. parallel network reverse according to claim 1 controls device, it is characterised in that described control module also includes monitoring unit；Described monitoring unit is connected with described inversion module, is used for gathering power information, and sends the power information collected to mobile terminal；
Described power information includes at least one in voltage, electric current and generated energy.
3. parallel network reverse according to claim 2 controls device, it is characterised in that described monitoring unit is connected with mobile terminal by RS485 or WIFI.
4. parallel network reverse according to claim 1 controls device, it is characterised in that described direct current joining unit includes the first chopper and the first lightning protection device；
Described inversion module is electrically connected with described direct-flow input end by described first chopper；
Described first lightning protection device is arranged between described inversion module and described first chopper.
5. parallel network reverse according to claim 1 controls device, it is characterised in that described Alternating Current Unit includes the first isolation switch and more than one chopper；
Described inversion module passes sequentially through each chopper and described first isolation switch electrically connects with described ac output end.
6. parallel network reverse according to claim 5 controls device, it is characterised in that described Alternating Current Unit also includes the second lightning protection device；Described second lightning protection device is arranged between described first isolation switch and described chopper.
7. a grid-connected system, it is characterised in that include electrification component and the parallel network reverse as described in claim 1 to 6 any one controls device；The direct-flow input end that described electrification component controls device with described parallel network reverse electrically connects, and described parallel network reverse controls the ac output end of device for electrically connecting with electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610233182.6A CN105743125A (en) | 2016-04-15 | 2016-04-15 | Grid-connected inversion control device and grid-connected power generation system |
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| CN201610233182.6A CN105743125A (en) | 2016-04-15 | 2016-04-15 | Grid-connected inversion control device and grid-connected power generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108337949A (en) * | 2017-01-21 | 2018-07-31 | 深圳市拓日新能源科技股份有限公司 | Utilize solar powered alkaline land improving system |
| CN108343578A (en) * | 2017-01-21 | 2018-07-31 | 深圳市拓日新能源科技股份有限公司 | Solar energy water pumping system |
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| JP2016041010A (en) * | 2012-08-29 | 2016-03-24 | 京セラ株式会社 | Power conditioner and method for controlling the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108337949A (en) * | 2017-01-21 | 2018-07-31 | 深圳市拓日新能源科技股份有限公司 | Utilize solar powered alkaline land improving system |
| CN108343578A (en) * | 2017-01-21 | 2018-07-31 | 深圳市拓日新能源科技股份有限公司 | Solar energy water pumping system |
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Application publication date: 20160706 |
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