CN202903962U - Photovoltaic component monitoring system - Google Patents
Photovoltaic component monitoring system Download PDFInfo
- Publication number
- CN202903962U CN202903962U CN2012205025139U CN201220502513U CN202903962U CN 202903962 U CN202903962 U CN 202903962U CN 2012205025139 U CN2012205025139 U CN 2012205025139U CN 201220502513 U CN201220502513 U CN 201220502513U CN 202903962 U CN202903962 U CN 202903962U
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- China
- Prior art keywords
- circuit
- photovoltaic module
- cell piece
- monitoring system
- piece string
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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.)
- Expired - Fee Related
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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
Abstract
The utility model is suitable for the field of photovoltaic power generation and provides a photovoltaic component monitoring system. The photovoltaic component monitoring system comprises multiple groups of bypass diodes which are connected in parallel with battery piece strings in multiple groups of photovoltaic components to protect the battery piece strings; a current sampling circuit which are connected with battery piece strings in multiple groups of photovoltaic components and multiple groups of bypass diodes; multiple groups of voltage sampling circuits which are connected with battery piece strings in multiple groups of photovoltaic components; an MCU circuit which is connected with the current sampling circuit and multiple groups of voltage sampling circuits and is used for data processing; a communication circuit which is connected between the MCU circuit and battery piece strings in photovoltaic components; and a power supply circuit which powers the system. The photovoltaic component monitoring system provided by the utility model can monitor the working states of photovoltaic components in real time, can upload the working states of photovoltaic components to a host, can carry out real-time display when a device has a fault, can upload and precisely position the fault state, and can effectively avoid the expansion of the fault to reduce the loss.
Description
Technical field
The utility model belongs to field of photovoltaic power generation, relates in particular to a kind of photovoltaic module monitoring system.
Background technology
Sun power is as a kind of clean and safe, reproducible green energy resource, and inexhaustible, nexhaustible, more and more is subject to people's favor.But the solar power plant has nearly hundred hectares of floor areas, uses that photovoltaic module quantity is ten hundreds of, the solar power plant reaches a series of characteristics such as operating period, the running environment in 25 years is abominable.Photovoltaic module is easy to break down, and the photovoltaic module fault is difficult for being found, and need to check one by one assembly, and the cost of overhaul is higher.
Summary of the invention
The utility model embodiment provides a kind of photovoltaic module monitoring system, be intended to solve be difficult for when existing photovoltaic module breaks down being found, problem that the cost of overhaul is high.
The utility model embodiment is achieved in that a kind of photovoltaic module monitoring system, and described photovoltaic module monitoring system comprises:
With the cell piece connection in series-parallel in many groups photovoltaic module, for the protection of many groups bypass diode of cell piece string;
With cell piece string and the described current sampling circuit that bypass diode is connected of organizing in many groups photovoltaic module more;
With cell piece in many groups photovoltaic module series winding connect many groups voltage sampling circuit;
With described current sampling circuit be connected many group voltage sampling circuits and be connected the MCU circuit that is used for the data processing;
Be connected to the telecommunication circuit between the cell piece string in described MCU circuit and the photovoltaic module; And
Power circuit for system power supply.
Further, described bypass diode respectively with photovoltaic module in corresponding cell piece connection in series-parallel.
Further, described current sampling circuit comprises:
Be connected to the resistance R 1 between cell piece string BT1 and the ground; And
Be connected to the amplifier between the current sample port of cell piece string BT1 and MCU circuit.
Further, described voltage sampling circuit comprises:
Be connected to resistance R 2, resistance R 4, resistance R 6 between cell piece string BT1, cell piece string BT2, cell piece string BT3 and the ground wire corresponding in the photovoltaic module.
Further, described MCU circuit is made of MCU and peripheral circuit thereof.
Further, described telecommunication circuit is made of communication integrated circuit and peripheral circuit thereof.
Further, described photovoltaic module monitoring system also comprises the holding circuit that circuit is protected.
Further, described holding circuit comprises:
With the series-parallel first order of cell piece be piezoresister R10;
With the series-parallel second level of cell piece Transient Suppression Diode TVS; And
Be connected on the fuse F1 between cell piece string and the piezoresister R10.
Photovoltaic module monitoring system provided by the utility model can the Real-Time Monitoring photovoltaic module duty, the duty of photovoltaic module can be uploaded to main frame, when device fails, can show in real time, malfunction can be implemented to upload and precise positioning, can effectively avoid simultaneously fault to enlarge, reduce the loss.
Description of drawings
Fig. 1 is the circuit system schematic diagram that the utility model embodiment provides;
Fig. 2 is the circuit theory diagrams of the telecommunication circuit that provides of the utility model embodiment;
Fig. 3 is the communication structure figure of the telecommunication circuit that provides of the utility model embodiment;
Fig. 4 is the circuit theory diagrams of the holding circuit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 shows the circuit system schematic diagram that the utility model embodiment provides, and for convenience of description, the relevant portion with the utility model embodiment only is shown.
A kind of photovoltaic module detection system comprises:
The many groups bypass diode 1 that connects with cell piece in many groups photovoltaic module series winding;
With the cell piece string in many groups photovoltaic module and the current sampling circuit 2 how group bypass diode 1 is connected;
With cell piece in many groups photovoltaic module series winding connect many groups voltage sampling circuit 3;
Organize the MCU circuit 4 that voltage sampling circuit 3 is connected with current sampling circuit 2 with more;
Be connected to the telecommunication circuit 5 between MCU circuit 4 and the cell piece string in photovoltaic module; And
Bypass diode D1, bypass diode D2, bypass diode D3 respectively with photovoltaic module in corresponding cell piece string BT1, cell piece string BT2, cell piece string BT3 in parallel, bypass diode 1 be used for preventing solar cell under high light since block cause some of them because can not get illumination become load produce seriously generate heat impaired.
Be connected to the resistance R 1 between cell piece string BT1 and the ground; And be connected to amplifier U1 between the current sample port of cell piece string BT1 and MCU circuit 4.
Be connected to resistance R 2, resistance R 4, resistance R 6 between cell piece string BT1, cell piece string BT2, cell piece string BT3 and the ground wire corresponding in the photovoltaic module.
Fig. 2 and Fig. 3 show respectively circuit theory diagrams and the communication structure figure of telecommunication circuit 5, for convenience of description, the relevant portion with the utility model embodiment only are shown.
When MCU circuit 4 need to be with other unit communication, instruction or data are written to the transmitting data register of communication integrated circuit U2, the TXA of communication integrated circuit U2 and TXAN end will produce FSK (frequency shift keying namely utilizes the frequency change of carrier wave to come transmitting digital information) modulation signals, signal is finished the transmission of instruction and data by in the DC circuit that is coupled to fluctuation with this.Simultaneously, signal of communication is isolated the RXAN end that the FSK modulation signals is delivered to communication integrated circuit U2 by capacitor C 2, transformer TF1, capacitor C 3, resistance R 8, finish amplification and shaping in communication integrated circuit U2 inside and be decoded into instruction or data, and deposit receive data register in, MCU circuit 4 reads the receive data register of communication integrated circuit U2, finishes the reception of instruction and data with this.
The utility model embodiment also comprises be used to the holding circuit 7 of avoiding photovoltaic module to cause photovoltaic module to damage because of external factor such as thunderbolt, reversal connections.
Fig. 4 shows the circuit theory diagrams of the holding circuit 7 that the utility model embodiment provides, and for convenience of description, the relevant portion with the utility model embodiment only is shown.
With the series-parallel first order of cell piece be piezoresister R10;
With the series-parallel second level of cell piece Transient Suppression Diode TVS; And
Be connected on the fuse F1 between cell piece string and the piezoresister R10.
When the voltage instantaneous in the circuit was higher than representative value 50V, piezoresister R10 resistance descended rapidly, the large electric current of conducting, thereby other components and parts in the holding circuit; When voltage was lower than piezoresister R10 operational voltage value, piezoresister R10 resistance was high, was close to open circuit, thereby can not affect the normal operation of device or electric equipment.When instantaneous pressure pulse or reversal connection are arranged in the circuit, the rapid conducting of Transient Suppression Diode TVS, thereby clamp the voltage at safety value or fully conducting play the effect of all components and parts of protection.Rapid safety silk F1 fusing when transshipping in the circuit, thus whole circuit protected.
Photovoltaic module when normal operation, the voltage of cell piece string BT1, cell piece string BT2, cell piece string BT3 all be positive polarity and numerical value (representative value be+9 ~+13V) very approaching, the terminal box temperature is at-40 degree ~+85 degree, MCU circuit 4 control LED are short sudden strain of a muscle green when long.At this moment, if MCU circuit 4 receives the data command of being sent by main frame by telecommunication circuit 5, duty and each parameter of terminal box can be uploaded to main frame, main frame is uploaded to the duty that Surveillance center can monitor each piece photovoltaic module with this information.
If photovoltaic module be subject to partial occlusion or part cell piece fault then the polarity of voltage of cell piece string BT1, cell piece string BT2, cell piece string BT3 change or voltage value differs larger.MCU circuit control this moment LED dodges red, when treating the communication line free time to main frame transmission request of data or receiving Host Command duty is uploaded.
If a plurality of operations of photovoltaic module in a few days be subject to continuously partial occlusion or part cell piece fault then this assembly of MCU circuit preliminary judgement break down and need change as early as possible, the normal glassy yellow of control LED when treating the communication line free time to main frame transmission request of data or receiving Host Command is uploaded duty.
The photovoltaic module monitoring system that the utility model embodiment provides can the Real-Time Monitoring photovoltaic module duty, the duty of photovoltaic module can be uploaded to main frame, when device fails, can show in real time, malfunction can be implemented to upload and precise positioning, can effectively avoid simultaneously fault to enlarge, reduce the loss.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a photovoltaic module monitoring system is characterized in that, described photovoltaic module monitoring system comprises:
With the cell piece connection in series-parallel in many groups photovoltaic module, for the protection of many groups bypass diode of cell piece string;
With cell piece string and the described current sampling circuit that bypass diode is connected of organizing in many groups photovoltaic module more;
With cell piece in many groups photovoltaic module series winding connect many groups voltage sampling circuit;
With described current sampling circuit be connected many group voltage sampling circuits and be connected the MCU circuit that is used for the data processing;
Be connected to the telecommunication circuit between the cell piece string in described MCU circuit and the photovoltaic module; And
Power circuit for system power supply.
2. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described bypass diode respectively with photovoltaic module in corresponding cell piece connection in series-parallel.
3. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described current sampling circuit comprises:
Be connected to the resistance R 1 between cell piece string BT1 and the ground; And
Be connected to the amplifier between the current sample port of cell piece string BT1 and MCU circuit.
4. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described voltage sampling circuit comprises:
Be connected to resistance R 2, resistance R 4, resistance R 6 between cell piece string BT1, cell piece string BT2, cell piece string BT3 and the ground wire corresponding in the photovoltaic module.
5. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described MCU circuit is made of MCU and peripheral circuit thereof.
6. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described telecommunication circuit is made of communication integrated circuit and peripheral circuit thereof.
7. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, described photovoltaic module monitoring system also comprises the holding circuit that circuit is protected.
8. photovoltaic module monitoring system as claimed in claim 7 is characterized in that, described holding circuit comprises:
With the series-parallel first order of cell piece be piezoresister R10;
With the series-parallel second level of cell piece Transient Suppression Diode TVS; And
Be connected on the fuse F1 between cell piece string and the piezoresister R10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205025139U CN202903962U (en) | 2012-09-27 | 2012-09-27 | Photovoltaic component monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205025139U CN202903962U (en) | 2012-09-27 | 2012-09-27 | Photovoltaic component monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903962U true CN202903962U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205025139U Expired - Fee Related CN202903962U (en) | 2012-09-27 | 2012-09-27 | Photovoltaic component monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903962U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841301A (en) * | 2012-09-27 | 2012-12-26 | 常州旭能新能源科技有限公司 | Photovoltaic assembly monitoring system |
| CN103888056A (en) * | 2014-03-07 | 2014-06-25 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic junction box based on Hall sensor |
| CN105141254A (en) * | 2014-06-03 | 2015-12-09 | 东朋科技有限公司 | Monitoring device of solar power generation system |
| CN105827198A (en) * | 2014-09-02 | 2016-08-03 | 张梅 | Smart junction box for photovoltaic systems |
-
2012
- 2012-09-27 CN CN2012205025139U patent/CN202903962U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841301A (en) * | 2012-09-27 | 2012-12-26 | 常州旭能新能源科技有限公司 | Photovoltaic assembly monitoring system |
| CN103888056A (en) * | 2014-03-07 | 2014-06-25 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic junction box based on Hall sensor |
| CN105141254A (en) * | 2014-06-03 | 2015-12-09 | 东朋科技有限公司 | Monitoring device of solar power generation system |
| CN105827198A (en) * | 2014-09-02 | 2016-08-03 | 张梅 | Smart junction box for photovoltaic systems |
| CN105827198B (en) * | 2014-09-02 | 2018-10-12 | 张梅 | intelligent wiring box for photovoltaic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20170927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |