CN105896460B - Photovoltaic module Intelligent isolation switch - Google Patents
Photovoltaic module Intelligent isolation switch Download PDFInfo
- Publication number
- CN105896460B CN105896460B CN201610224254.0A CN201610224254A CN105896460B CN 105896460 B CN105896460 B CN 105896460B CN 201610224254 A CN201610224254 A CN 201610224254A CN 105896460 B CN105896460 B CN 105896460B
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- module
- disconnecting switch
- connect
- semiconductor
- photovoltaic
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- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 239000004065 semiconductor Substances 0.000 claims abstract description 24
- 230000035772 mutation Effects 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007774 longterm Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
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- H02J13/0075—
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of photovoltaic module Intelligent isolation switchs, it is related to a kind of photovoltaic circuit safety guard.It includes metal-oxide-semiconductor, current sensor, mutation current threshold control module, disconnecting switch control circuit, wireless receiving module and working power, source electrode, the grid of metal-oxide-semiconductor are connected to disconnecting switch control circuit, working power is connect with mutation current threshold control module, disconnecting switch control circuit, wireless receiving module respectively, mutation current threshold control module connects disconnecting switch control circuit, mutation current threshold control module is also connect with current sensor, and current sensor is connect with the magnet ring coupling coil being set on rear class output electric wire.The present invention provides a kind of effective safety features to the Safe Transformation and new build a power station from now on that solve existing photovoltaic plant, and ensure that the safety of photovoltaic plant, stability is good, reliability height, highly practical, use easy to spread.
Description
Technical field
The present invention relates to a kind of photovoltaic circuit safety guards, and in particular to photovoltaic module Intelligent isolation switch.
Background technology
Currently in existing photovoltaic power generation technology, when Anywhere occurring contacting not in the string formation line loop in power generation
When good and arcing arcing, still without it is a kind of can occur circuit jump arc moment can auto-cutout protect and the equipment of isolation, and
Lack any the same safeguard measure and necessary automatic control equipment, all the safety of photovoltaic can be made to have coverd with shade, thus this
Problem has become to compel the considerable safety technical problem highly necessary solved when photovoltaic plant is built from now on, designs a kind of photovoltaic module intelligence
Energy disconnecting switch is particularly necessary.
Invention content
In view of the shortcomings of the prior art, purpose of the present invention is to be to provide a kind of photovoltaic module intelligently to keep apart
It closes, simple in structure, reasonable design ensure that the safety of photovoltaic plant, and stability is good, and reliability is high, highly practical, is easy to push away
It is wide to use.
To achieve the goals above, the present invention is to realize by the following technical solutions：Photovoltaic module is intelligently kept apart
It closes, including metal-oxide-semiconductor, current sensor, mutation current threshold control module, disconnecting switch control circuit and working power, metal-oxide-semiconductor
Drain electrode reversal connection diode to the source electrode of metal-oxide-semiconductor, resistance, source electrode, the grid of metal-oxide-semiconductor are connected between the source electrode and grid of metal-oxide-semiconductor
It is connected to disconnecting switch control circuit, working power connects with mutation current threshold control module, disconnecting switch control circuit respectively
Connect, mutation current threshold control module connects disconnecting switch control circuit, mutation current threshold control module also with current sensor
Connection, is connected to by the disconnecting switch that said elements form between previous stage solar components and rear stage solar components, institute
The drain electrode for stating metal-oxide-semiconductor is connect by prime connector with previous stage solar components, the source electrode of metal-oxide-semiconductor by rear class connector with
Rear stage solar components connect.
Preferably, the disconnecting switch further includes the wireless receiving module for having high frequency, it is connected on wireless receiving module
Antenna, wireless receiving module are connected to disconnecting switch control circuit, and wireless receiving module is connected with working power, described wirelessly to connect
The frequency for receiving module is 433MHz, and control centre can control dozens of, even more reception moulds simultaneously in a broadcast manner
Block.
Preferably, the storage capacitor connection of the working power and internal high-capacity, working power, storage capacitor are equal
It is connect with external miniature small photovoltaic panel auxiliary power supply, by the way of internal storage capacitor and external photovoltaic battery panel power supply,
Whole device is worked normally for a long time in the case of no other supply lines, ensure that the stability of work.
Preferably, the current sensor is connect with the magnet ring coupling coil being set on rear class output electric wire, adopt
The detection technique of transmission line of electricity mutation current is sampled with magnet ring coupling coil, can accurately be captured transmission line of electricity and be disconnected wink in electric current
Between electromagnetism variable.
Beneficial effects of the present invention：Safe Transformation to the existing photovoltaic plant of solution and new build a power station from now on provide
It is effective to ensure, the segmentation of polylith section is further carried out to power output circuit, to reach nearly 800 volts of battery string formation or more
Suspended voltage become the low suspended voltage of dispersibility of multistage, ensure the safety of the person and equipment；Also meet world IEC simultaneously
Standard authority is the photovoltaic plant safety standard requirements that will be released, wide adaptability.
Description of the drawings
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
Referring to Fig.1, present embodiment uses following technical scheme：Photovoltaic module Intelligent isolation switch, including metal-oxide-semiconductor
1, current sensor 2, mutation current threshold control module 3, disconnecting switch control circuit 4 and working power 5, the drain electrode of metal-oxide-semiconductor 1
Reversal connection diode D is connected to resistance R to the source electrode of metal-oxide-semiconductor 1 between the source electrode and grid of metal-oxide-semiconductor 1, source electrode, the grid of metal-oxide-semiconductor 1 are equal
Be connected to disconnecting switch control circuit 4, working power 5 respectively with mutation current threshold control module 3, disconnecting switch control circuit 4
Connection, mutation current threshold control module 3 connect disconnecting switch control circuit 4, and mutation current threshold control module 3 is also passed with electric current
Sensor 2 connects, and previous stage solar components 11 and rear stage solar components are connected to by the disconnecting switch that said elements form
Between 13, the drain electrode of the metal-oxide-semiconductor 1 is connect by prime connector 10 with previous stage solar components 11, the source electrode of metal-oxide-semiconductor 1
It is connect with rear stage solar components 13 by rear class connector 12.
It is worth noting that, the disconnecting switch further includes having wireless receiving module 6, it is connected on wireless receiving module 6
Antenna 7, wireless receiving module 6 are connected to disconnecting switch control circuit 4, and wireless receiving module 6 is connected with working power 5.
It is worth noting that, the working power 5 is connect with the storage capacitor 8 of internal high-capacity, working power 5, storage
Energy capacitance 8 is connect with external miniature small photovoltaic panel auxiliary power supply 9；Using internal storage capacitor and external miniature photovoltaic cell
The mode of plate power supply so that entire component isolation switch device can in the case of no other supply lines long-term normal work
Make, keeps stability, and the disconnecting switch of this form is primarily adapted for use in and carries out safety upgrade transformation to existing photovoltaic plant
Use.
In addition, the current sensor 2 is connect with the magnet ring coupling coil 14 being set on rear class output electric wire, use
Magnet ring coupling coil 14 samples the detection technique of transmission line of electricity mutation current, which has been provided simultaneously with isolation sampling and to slow
Slowly the insensitive characteristic of the current fluctuation that changes makes it accurately to capture the electromagnetism variable that transmission line of electricity disconnects moment in electric current,
Again after the comparison of late-class circuit processing, power electronic switching cut-out transmission line of electricity is automatically controlled, achievees the purpose that circuit is isolated；
Magnet ring coupling coil 14 sends the electric current that transmission line of electricity up-samples to mutation current threshold control module by current sensor 2
3 handled after be sent to disconnecting switch control circuit 4, by disconnecting switch control circuit 4 control metal-oxide-semiconductor 1 shutdown.
The electronic switch that present embodiment is isolated using the new power metal-oxide-semiconductor 1 of special low on-resistance as circuit,
Control power very little, high pressure, the rated current of this element needs are big, and because saturation conduction resistance is very small, it is ensured that
Excessive droop loss and self-heating will not be generated to circuit during normal power generation；Installation also has high frequency inside disconnecting switch
Wireless receiving module can receive external remote control command, and the disconnecting switch of isolation is closed for being in, must
Signal, which must be controlled, with wireless remote can just be such that it reopens, and disconnecting switch Close All can be also made by wireless control signal；Institute
Wireless receiving module 6 is stated using the transceiver module of the 433MHz of learning-oriented address number, control centre can be in a broadcast manner
Control the even more receiving module of dozens of simultaneously.
The design feature of present embodiment：It is a work(that can be independently inserted existing photovoltaic generation group string loop
Energy property security module, module volume very little, size is in 60mm × 50mm × 25mm or so, and there are two width 10mm for the bottom of module
Plastics card base, in the split seam that can easily snap onto in general photovoltaic plant two pieces of solar panels, and caught on from beneath
To be kept fixed.
The electrical connection methods of present embodiment：Photovoltaic module Intelligent isolation switch module bottom draw one just,
One minus two conveying electrical wirings and connector, in the place that needs install additional, as long as first original two pieces of solar panels are connected just
Negative connector separates, and is then inserted respectively on the positive and negative connector of photovoltaic module Intelligent isolation switch extraction, then this module
The small photovoltaic battery panel of institute's band, which is fixed to, to be had at the neutral gear of illumination, can be started to work, and module original state acquiescence is to turn on
Working condition.
The function of present embodiment and effect：When the intelligent inverter (or intelligent junction box) in work detects certain
The transmitting loop of a photovoltaic cell string formation is caused by poor contact when ELECTROMAGNETIC RADIATION SIGNATURE, further according to the change of other circuit parameters
Change, can be inferred to the branch specifically to break down, and this circuit is cut off by electronic power switch, avoid failure into
One step expands.And the effect of this photovoltaic module Intelligent isolation switch is：Further polylith section is carried out to power output circuit to divide
It cuts, to reach the low suspended voltage of dispersibility for the suspended voltage of nearly 800 volts of battery string formation or more being become multistage, ensures people
The safety of body and equipment, and also to meet in the photovoltaic system safety protection standard that IEC will be promulgated about photovoltaic module
After carrying out safety cut-off, any point suspended voltage must not be higher than 80 volts of new standard.
Present embodiment is to solving the Safe Transformation and new offer one kind of building a power station from now on of existing photovoltaic plant
Effective safety features also meet the photovoltaic plant that international IEC standard management organization will release and advise safely
Model requirement, when safety monitoring circuit possessed by the inverter of photovoltaic plant occurs occurring because of poor contact in finding circuit
Spark excitation electromagnetic wave when, when the electric current of quick cut-out group string loop, can be servo-actuated and the external connection of each component
Cut-out, it is that the very high floating voltage in photovoltaic circuit is divided into multistage to reach, and the voltage at circuit any point is made to be below the IEC of 80V
New safety standard, it is reliable and stable, have a vast market application prospect.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. photovoltaic module Intelligent isolation switch, which is characterized in that including metal-oxide-semiconductor (1), current sensor (2), mutation current threshold
Control module (3), disconnecting switch control circuit (4) and working power (5), the drain electrode reversal connection diode (D) of metal-oxide-semiconductor (1) to MOS
The source electrode for managing (1), is connected to resistance (R), source electrode, the grid of metal-oxide-semiconductor (1) are connected to isolation between the source electrode and grid of metal-oxide-semiconductor (1)
ON-OFF control circuit (4), working power (5) respectively with mutation current threshold control module (3), disconnecting switch control circuit (4)
Connection, mutation current threshold control module (3) connect disconnecting switch control circuit (4), mutation current threshold control module (3) also with
Current sensor (2) connects, and previous stage solar components (11) and rear stage are connected to by the disconnecting switch that said elements form
Between solar components (13)；The working power (5) is connect with the storage capacitor (8) of internal high-capacity, working power
(5), storage capacitor (8) is connect with external miniature small photovoltaic panel auxiliary power supply (9), micro- using internal storage capacitor and outside
The mode of type photovoltaic battery panel power supply so that entire component isolation switch device can be in the case of no other supply lines
Long-term normal work.
2. photovoltaic module Intelligent isolation switch according to claim 1, which is characterized in that the disconnecting switch further includes
There is the wireless receiving module (6) of high frequency, antenna (7) is connected on wireless receiving module (6), wireless receiving module (6) is connected to isolation
ON-OFF control circuit (4), wireless receiving module (6) are connected with working power (5), outside wireless receiving module (6) reception
Remote control command closes the disconnecting switch of isolation for being in, it is necessary to just its can be made heavy with wireless control signal
It is new to open, disconnecting switch Close All is made by wireless control signal.
3. photovoltaic module Intelligent isolation switch according to claim 2, which is characterized in that the wireless receiving module
(6) using the transceiver module of the 433MHz of learning-oriented address number, control centre can control tens of simultaneously in a broadcast manner
A, even more receiving modules.
4. photovoltaic module Intelligent isolation switch according to claim 1, which is characterized in that the drain electrode of the metal-oxide-semiconductor (1) is logical
It crosses prime connector (10) to connect with previous stage solar components (11), the source electrode of metal-oxide-semiconductor (1) passes through rear class connector (12)
It is connect with rear stage solar components (13).
5. photovoltaic module Intelligent isolation switch according to claim 1, which is characterized in that the current sensor (2)
It is connect with the magnet ring coupling coil (14) being set on rear class output electric wire, power transmission line is sampled using magnet ring coupling coil (14)
The detection technique of road mutation current has been provided simultaneously with isolation sampling and the characteristic insensitive to slowly varying current fluctuation, has made
The electromagnetism variable that can accurately capture transmission line of electricity and disconnect moment in electric current, it is automatic to control then after the comparison of late-class circuit processing
Power electronic switching processed cuts off transmission line of electricity, achievees the purpose that circuit is isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224254.0A CN105896460B (en) | 2016-04-12 | 2016-04-12 | Photovoltaic module Intelligent isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224254.0A CN105896460B (en) | 2016-04-12 | 2016-04-12 | Photovoltaic module Intelligent isolation switch |
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| Publication Number | Publication Date |
|---|---|
| CN105896460A CN105896460A (en) | 2016-08-24 |
| CN105896460B true CN105896460B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224254.0A Active CN105896460B (en) | 2016-04-12 | 2016-04-12 | Photovoltaic module Intelligent isolation switch |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102016118039A1 (en) * | 2016-09-23 | 2018-03-29 | Sma Solar Technology Ag | Solar module, photovoltaic system and voltage limiting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550490U (en) * | 2012-04-21 | 2012-11-21 | 深圳市晶福源电子技术有限公司 | Low-loss isolating protective circuit for solar battery |
| CN104319810A (en) * | 2014-10-31 | 2015-01-28 | 广东易事特电源股份有限公司 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
| CN204424894U (en) * | 2015-01-15 | 2015-06-24 | 张家港麦智电子科技有限公司 | A kind of DC power supply input protection circuit |
| CN204425270U (en) * | 2015-01-04 | 2015-06-24 | 阳光电源股份有限公司 | A kind of signal supervisory instrument for photovoltaic generating system |
| CN104953546A (en) * | 2015-06-25 | 2015-09-30 | 安徽长远绿色能源有限公司 | Protection detection device for photovoltaic assembly or power system as well as control method of protection detection device |
| CN205583642U (en) * | 2016-04-12 | 2016-09-14 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligence isolator |
-
2016
- 2016-04-12 CN CN201610224254.0A patent/CN105896460B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550490U (en) * | 2012-04-21 | 2012-11-21 | 深圳市晶福源电子技术有限公司 | Low-loss isolating protective circuit for solar battery |
| CN104319810A (en) * | 2014-10-31 | 2015-01-28 | 广东易事特电源股份有限公司 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
| CN204425270U (en) * | 2015-01-04 | 2015-06-24 | 阳光电源股份有限公司 | A kind of signal supervisory instrument for photovoltaic generating system |
| CN204424894U (en) * | 2015-01-15 | 2015-06-24 | 张家港麦智电子科技有限公司 | A kind of DC power supply input protection circuit |
| CN104953546A (en) * | 2015-06-25 | 2015-09-30 | 安徽长远绿色能源有限公司 | Protection detection device for photovoltaic assembly or power system as well as control method of protection detection device |
| CN205583642U (en) * | 2016-04-12 | 2016-09-14 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligence isolator |
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| CN105896460A (en) | 2016-08-24 |
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Address after: No. 19 Zhongtian Road, Zone E, Changkun Industrial Park, Changshu City, Suzhou City, Jiangsu Province, 215500 Patentee after: CHANGSHU FRIENDS CONNECTOR TECHNOLOGY. Co.,Ltd. Address before: No. 2, Zhongtian Road, Zone E, Changkun Industrial Park, Changshu, Suzhou, Jiangsu 215500 Patentee before: CHANGSHU FRIENDS CONNECTOR TECHNOLOGY. Co.,Ltd. |