CN105743431A - Solar photovoltaic power station system - Google Patents
Solar photovoltaic power station system Download PDFInfo
- Publication number
- CN105743431A CN105743431A CN201610282877.3A CN201610282877A CN105743431A CN 105743431 A CN105743431 A CN 105743431A CN 201610282877 A CN201610282877 A CN 201610282877A CN 105743431 A CN105743431 A CN 105743431A
- Authority
- CN
- China
- Prior art keywords
- rosette
- control signal
- cable
- link
- power station
- 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
Links
- 239000000758 substrate Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013083 solar photovoltaic technology Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a solar photovoltaic power station system. The solar photovoltaic power station system comprises a plurality of solar cell strings, wherein the plurality of solar cell strings are connected in series to a group, the generated voltages are accumulated and then direct current is converted to alternating current by an inverter, a control signal generator is arranged in the power station system, an electronic switch is arranged in a junction box, and the switch-on and the switch-off of the electronic switch are determined by a signal emitted from the control signal generator. By the solar photovoltaic power station system, the voltage in the power station system can be manually or automatically reduced to a safety range when an accident occurs, and thus, site processing is favorably and timely developed.
Description
Technical field
The invention belongs to solar photovoltaic technology field, particularly relate to a kind of solar photovoltaic power plant system.
Background technology
Solar power station development in recent years is rapid, and its basic structure includes rack-mount solar-energy photo-voltaic cell group string, and voltage produced by set of cells string is after rosette is cumulative, then by inverter, unidirectional current is converted to alternating current, is then incorporated into electrical network.In common design, voltage produced by single battery group string is 30V, and after 14 groups are connected, voltage can reach 420V.And when something unexpected happened, disposing fortuitous event will be relatively difficult.Such as, when a fire, owing to there is high direct voltage in power station all the time, fireman cannot propagate into power station and puts out a fire, and could enter the scene of a fire after can only sitting back and waiting burning-out completely.
For this, solar power station DC side is required to reduce in time voltage.
Summary of the invention
It is an object of the invention to provide a kind of can the solar photovoltaic power plant system of in time blood pressure lowering in emergency situations.
The technical solution used in the present invention is such that a kind of solar photovoltaic power plant system, including some solar battery group strings, it it is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, it is characterized in that: electric power station system has a control signal generator, rosette is provided with an electrical switch, the signal deciding that the break-make of electrical switch is sent by control signal generator.
As further technical scheme, the logic of described electrical switch is: the switch OFF when no signal, switch conduction when having a signal.
Control signal generator accesses loop in series or in parallel, and produced control signal is by cable transmission to each rosette.
Control signal generator produces wireless signal, sends to each rosette.
Described rosette includes box body, printed substrate it is provided with in box body, being printed with N number of busbar link and two cable links on printed substrate, each busbar link is connected with solar battery group string by busbar, is also connected with diode between each adjacent busbar link；Wherein be in series with electrical switch between the first busbar link and the first cable link, electrical switch by the control signal received to control its break-make；N busbar link and the second cable link are connected；Two cable links are connected with the external world respectively by cable.
It is additionally provided with bypass diode between two cable links.
The present invention controls rosette by control signal, and owing to a control signal controls multiple rosette simultaneously, therefore when reversion occurs signal, multiple rosettees all can disconnect, thus the series connection disconnected between solar battery group string.As each rosette is designed with electrical switch, then after switching off, the voltage existed in electric power station system is voltage produced by monocell group string, by aforementioned citing, is about 30V；In each two rosette, one sets electrical switch, then, after switching off, the voltage existed in electric power station system is voltage produced by two set of cells strings, by aforementioned citing, is about 60V；The rest may be inferred.
Electrical switch has two kinds of alternative logics, is namely defaulted as on-off.As logical in being defaulted as, then switch conduction during no signal, switch OFF when having a signal；As disconnected in being defaulted as, then switch OFF during no signal, switch conduction when having a signal.The present invention is preferably defaulted as disconnected scheme, because when something unexpected happened, control signal can be lost, and rosette will automatically shut down, and is so more beneficial for realizing the goal of the invention of " under the state of emergency timely power-off blood pressure lowering ".
Control signal can control electrical switch in a wired or wireless manner, and wireless mode has the multiple types such as WIFI, radio frequency, bluetooth available；Wired mode may utilize original cable, sends with the form of carrier signal, and control signal generator can be connected with rosette, it is also possible in parallel.
Electrical switch in the present invention, it is necessary to extra power supply circuits, and by between electronic switching device busbar link and cable link at negative pole, it is possible to share a ground connection with rosette itself, relative to device on positive pole, provide cost savings.The bypass diode set between cable link has very important effect, in an initial condition, owing to electrical switch default conditions are for turning off, loop can not be formed between each rosette, control signal cannot arrive each rosette thus starting whole system, therefore, arranging of bypass diode makes system to start smoothly in an initial condition；When the set of cells string of some rosette or its connection breaks down and can not work, it is also desirable to bypass diode conducting forms loop so that other rosettees of series connection and set of cells string energy normal operation.
It can be seen from the foregoing description that technical scheme, it is possible at the time of emergency, manually or automatically voltage in electric power station system is down to safety range, thus being conducive to carrying out in time site disposal.
Accompanying drawing explanation
It is described in further detail below in conjunction with accompanying drawing and embodiments of the present invention
Fig. 1 is the system block diagram of electric power station system；
Fig. 2 is the circuit diagram of rosette；
Fig. 3 is the main circuit diagram A1 of rosette；
Fig. 4 is the amplifier circuit diagram A2 of rosette；
Fig. 5 is the driving output circuit A3 of rosette；
Fig. 6 is the power supply circuits A4 of rosette；
Fig. 7 is the circuit diagram of electric power station system；
Fig. 8 is the artificial circuit figure of control signal generator；
Fig. 9 is the PCB figure of rosette.
Figure is labeled as: busbar link 1, diode 2, negative electricity cable connection end 31, positive electrical cable connection end 32, electrical switch 4, bypass diode 5；U is operational amplifier, R to be resistance, C be electric capacity, D are diode, Q2 to be audion, VR be potentiometer, Trans are ribbon core transformator.
Wherein, D1, D2, D3, D4, D5, the D6 in Fig. 2 is link, and the two ends of identical label are connected；
S1, S2, S3, S4, S5 in Fig. 3 ~ 7 is link, and the two ends of identical label are connected；
P1, P2, P3, P4, P5, P6 in Fig. 8 is link, and the two ends of identical label are connected.
Detailed description of the invention
Referring to accompanying drawing.Rosette described in the present embodiment, including box body, is provided with printed substrate in box body, printed substrate is printed with N number of busbar link 1 and cable link, and cable link is divided into negative electricity cable connection end 31 and positive electrical cable connection end 32；Each busbar link 1 is connected with solar battery group string by busbar, is also connected with diode 2 between each adjacent busbar link 1；Wherein be in series with electrical switch 4 between the first busbar link and negative electricity cable connection end 31, electrical switch 4 by the control signal received to control its break-make；N busbar link is connected with positive electrical cable connection end 32；Two cable links are connected with the external world respectively by cable.Between two cable links, bridging has bypass diode 5；Busbar link 1, diode 2, cable link, bypass diode 5, electrical switch 4 collectively form the main circuit of rosette, also connecting or bridge in S1, S2 place between corresponding busbar link and cable link has amplifier circuit, and the outfan of amplifier circuit is connected with electrical switch 4.
Solar power plant system described in the present embodiment, including some solar battery group strings, is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, at least part of with electrical switch 4 in described rosette；Electric power station system has a control signal generator, controls the break-make of electrical switch in rosette by control signal.Control signal generator can access loop by serial or parallel connection mode, and produced control signal can by wired mode, i.e. cable transmission extremely each rosette, can also be wirelessly, i.e. WIFI, radio frequency, bluetooths etc., produce wireless signal, send to each rosette.
During the present embodiment work, the control signal sent by control signal generator controls rosette, starting stage, many Battery packs sheet and rosette normal power supply；When there are special circumstances, control signal generator sends reverse signal, and the electrical switch of junction box disconnects；Owing to a control signal controls multiple rosette simultaneously, therefore control signal generator sends reverse signal, the electrical switch of multiple junction box all can disconnect, thus the series connection disconnected between solar battery sheet, the voltage existed in electric power station system is made to be voltage produced by single Battery pack sheet, voltage in electric power station system is down to safety range, thus being conducive to carrying out in time site disposal.
Claims (6)
1. a solar photovoltaic power plant system, including some solar battery group strings, it it is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, it is characterized in that: electric power station system has a control signal generator, rosette is provided with an electrical switch, the signal deciding that the break-make of electrical switch is sent by control signal generator.
2. solar photovoltaic power plant system as claimed in claim 1 a kind of, it is characterised in that: the logic of described electrical switch is: the switch OFF when no signal, switch conduction when having a signal.
3. a kind of solar photovoltaic power plant system as claimed in claim 2, it is characterised in that: control signal generator accesses loop in series or in parallel, and produced control signal is by cable transmission to each rosette.
4. a kind of solar power plant system as claimed in claim 2, it is characterised in that: control signal generator produces wireless signal, sends to each rosette.
5. a kind of solar power plant system as described in any one of claim 2-4, it is characterized in that: described rosette includes box body, printed substrate it is provided with in box body, printed substrate is printed with N number of busbar link and two cable links, each busbar link is connected with solar battery group string by busbar, is also connected with diode between each adjacent busbar link；Wherein be in series with electrical switch between the first busbar link and the first cable link, electrical switch by the control signal received to control its break-make；N busbar link and the second cable link are connected；Two cable links are connected with the external world respectively by cable.
6. a kind of solar power plant system as claimed in claim 5, it is characterised in that: it is additionally provided with bypass diode between two cable links of described rosette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282877.3A CN105743431A (en) | 2016-05-03 | 2016-05-03 | Solar photovoltaic power station system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282877.3A CN105743431A (en) | 2016-05-03 | 2016-05-03 | Solar photovoltaic power station system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105743431A true CN105743431A (en) | 2016-07-06 |
Family
ID=56288654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610282877.3A Pending CN105743431A (en) | 2016-05-03 | 2016-05-03 | Solar photovoltaic power station system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105743431A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130477A (en) * | 2016-07-27 | 2016-11-16 | 国家电网公司 | A kind of solar energy photovoltaic panel monitoring device |
| CN114094934A (en) * | 2020-08-24 | 2022-02-25 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module turn-off module and turn-off method |
| CN114094933A (en) * | 2020-08-24 | 2022-02-25 | 丰郅(上海)新能源科技有限公司 | Shutdown device supporting rapid shutdown of photovoltaic module and shutdown method of photovoltaic module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011109346A1 (en) * | 2010-03-01 | 2011-09-09 | Shoals Technologies Group, Llc | Solar energy wire harness with in-line fuses |
| US20120199172A1 (en) * | 2010-03-15 | 2012-08-09 | Tigo Energy, Inc. | Systems and Methods to Provide Enhanced Diode Bypass Paths |
| CN103782513A (en) * | 2011-06-29 | 2014-05-07 | 埃苏茨乌克有限责任公司 | Photovoltaic module |
| JP2015106882A (en) * | 2013-12-02 | 2015-06-08 | 河村電器産業株式会社 | Backflow prevention circuit and connection box for photovoltaic power generation |
| CN205584119U (en) * | 2016-05-03 | 2016-09-14 | 闪耀魅力有限公司 | Solar photovoltaic power station system |
-
2016
- 2016-05-03 CN CN201610282877.3A patent/CN105743431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011109346A1 (en) * | 2010-03-01 | 2011-09-09 | Shoals Technologies Group, Llc | Solar energy wire harness with in-line fuses |
| US20120199172A1 (en) * | 2010-03-15 | 2012-08-09 | Tigo Energy, Inc. | Systems and Methods to Provide Enhanced Diode Bypass Paths |
| CN103782513A (en) * | 2011-06-29 | 2014-05-07 | 埃苏茨乌克有限责任公司 | Photovoltaic module |
| JP2015106882A (en) * | 2013-12-02 | 2015-06-08 | 河村電器産業株式会社 | Backflow prevention circuit and connection box for photovoltaic power generation |
| CN205584119U (en) * | 2016-05-03 | 2016-09-14 | 闪耀魅力有限公司 | Solar photovoltaic power station system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130477A (en) * | 2016-07-27 | 2016-11-16 | 国家电网公司 | A kind of solar energy photovoltaic panel monitoring device |
| CN106130477B (en) * | 2016-07-27 | 2018-07-24 | 国家电网公司 | A kind of solar energy photovoltaic panel monitoring device |
| CN114094934A (en) * | 2020-08-24 | 2022-02-25 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module turn-off module and turn-off method |
| CN114094933A (en) * | 2020-08-24 | 2022-02-25 | 丰郅(上海)新能源科技有限公司 | Shutdown device supporting rapid shutdown of photovoltaic module and shutdown method of photovoltaic module |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
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