CN102841301A - Photovoltaic assembly monitoring system - Google Patents
Photovoltaic assembly monitoring system Download PDFInfo
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- CN102841301A CN102841301A CN2012103676411A CN201210367641A CN102841301A CN 102841301 A CN102841301 A CN 102841301A CN 2012103676411 A CN2012103676411 A CN 2012103676411A CN 201210367641 A CN201210367641 A CN 201210367641A CN 102841301 A CN102841301 A CN 102841301A
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- photovoltaic module
- battery sheet
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- photovoltaic assembly
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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
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Abstract
The invention provides a photovoltaic assembly monitoring system, which is applicable to the field of photovoltaic power generation. The photovoltaic assembly monitoring system comprises a multiple-unit bypass diode, a current sampling circuit, a multiple-unit voltage sampling circuit, an MCU (microporgrammed control unit) circuit, a communication circuit and a power circuit, wherein the multiple-unit bypass diode is in parallel connection with battery piece strings in a multiple-unit photovoltaic assembly and is used for protecting the battery piece strings; the current sampling circuit is connected with the battery piece strings in the multi-unit photovoltaic assembly and the multiple-unit bypass diode; the multiple-unit voltage sampling circuit is connected with the battery piece strings in the multiple-unit photovoltaic assembly; the MCU circuit is connected with the current sampling circuit and the multiple-unit voltage sampling circuit and is used for data processing; the communication circuit is connected between the MCU circuit and the battery piece strings in the photovoltaic assembly; and the power circuit supplies power for the system. The photovoltaic assembly monitoring system can monitor the work state of the photovoltaic assembly in real time, can upload the work state of the photovoltaic assembly to a host computer, can provide real-time display when equipment is in failure, can upload the failure condition and provide accurate location and can effectively avoid the failure expanding to reduce loss.
Description
Technical field
The invention belongs to field of photovoltaic power generation, relate 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 receives 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 coming to light, and need check assembly one by one, and the cost of overhaul is higher.
Summary of the invention
The embodiment of the invention provides a kind of photovoltaic module monitoring system, be intended to solve be difficult for when existing photovoltaic module breaks down coming to light, problem that the cost of overhaul is high.
The embodiment of the invention is achieved in that a kind of photovoltaic module monitoring system, and said photovoltaic module monitoring system comprises:
With the battery sheet SP in many groups photovoltaic module, be used to protect many groups bypass diode of battery sheet string;
With battery sheet string and the said current sampling circuit that bypass diode is connected of organizing in many groups photovoltaic module more;
With battery sheet in many groups photovoltaic module polyphone connect many groups voltage sampling circuit;
Be connected the MCU circuit that is used for data processing with said current sampling circuit with said many group voltage sampling circuits;
Be connected the telecommunication circuit between the battery sheet string in said MCU circuit and the photovoltaic module; And
Power circuit for system's power supply.
Further, said bypass diode respectively with photovoltaic module in corresponding battery sheet SP.
Further, said current sampling circuit comprises:
Be connected the resistance R 1 between battery sheet string BT1 and the ground; And
Be connected the amplifier between the current sample port of battery sheet string BT1 and MCU circuit.
Further, said voltage sampling circuit comprises:
Be connected to resistance R 2, resistance R 4, resistance R 6 between battery sheet string BT1, battery sheet string BT2, battery sheet string BT3 and the ground wire corresponding in the photovoltaic module.
Further, said MCU circuit is made up of MCU and peripheral circuit thereof.
Further, said telecommunication circuit is made up of communication integrated circuit and peripheral circuit thereof.
Further, said photovoltaic module monitoring system also comprises the holding circuit that circuit is protected.
Further, said holding circuit comprises:
With the series-parallel first order of battery sheet be piezoresister R10;
With the series-parallel second level of battery sheet Transient Suppression Diode TVS; And
Be connected on the fuse F1 between battery sheet string and the piezoresister R10.
Photovoltaic module monitoring system provided by the present invention can be monitored the duty of photovoltaic module in real time; Can the duty of photovoltaic module be uploaded to main frame; When device fails, can show in real time; Malfunction can be implemented to upload and precisely locate, and can effectively avoid fault to enlarge simultaneously, reduces the loss.
Description of drawings
Fig. 1 is the circuit system schematic diagram that the embodiment of the invention provides;
Fig. 2 is the circuit theory diagrams of the telecommunication circuit that provides of the embodiment of the invention;
Fig. 3 is the communication structure figure of the telecommunication circuit that provides of the embodiment of the invention;
Fig. 4 is the circuit theory diagrams of the holding circuit that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the circuit system schematic diagram that the embodiment of the invention provides, and for convenient explanation, only illustrates and embodiment of the invention relevant portion.
A kind of photovoltaic module detection system comprises:
The many groups bypass diode 1 that connects with battery sheet in many groups photovoltaic module polyphone;
With battery sheet string in many groups photovoltaic module and the current sampling circuit 2 how group bypass diode 1 is connected;
With battery sheet in many groups photovoltaic module polyphone connect many groups voltage sampling circuit 3;
The MCU circuit 4 that is connected with many group voltage sampling circuits 3 with current sampling circuit 2;
Be connected the telecommunication circuit 5 between MCU circuit 4 and the battery sheet string in photovoltaic module; And
Bypass diode D1, bypass diode D2, bypass diode D3 respectively with photovoltaic module in corresponding battery sheet string BT1, battery sheet string BT2, battery sheet string BT3 parallel connection, bypass diode 1 be used to prevent solar cell under high light owing to block and cause some of them and become load generating and seriously generate heat impaired because can not get illumination.
Be connected the resistance R 1 between battery sheet string BT1 and the ground; And be connected the amplifier U1 between the current sample port of battery sheet string BT1 and MCU circuit 4.
Be connected to resistance R 2, resistance R 4, resistance R 6 between battery sheet string BT1, battery sheet string BT2, battery sheet string BT3 and the ground wire corresponding in the photovoltaic module.
The communication that telecommunication circuit 5 is accomplished MCU circuit 3 and main frame is connected, and signal of communication is converted to be adapted at the signal that transmits on DC line or other transmission channel, is made up of communication integrated circuit U2 and peripheral circuit thereof.
Fig. 2 and Fig. 3 show the circuit theory diagrams and the communication structure figure of telecommunication circuit 5 respectively, for convenient explanation, only illustrate and embodiment of the invention relevant portion.
When MCU circuit 4 need be with other unit communication, will instruct 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 promptly utilizes the change of frequency of carrier wave to transmit numerical information) modulation signals; Signal is accomplished the transmission of instruction and data through 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; Be decoded into instruction or data in inner completion amplification of communication integrated circuit U2 and shaping; And depositing receive data register in, MCU circuit 4 reads the receive data register of communication integrated circuit U2, accomplishes the reception of instruction and data with this.
The embodiment of the invention also comprises the holding circuit 7 that is used to avoid 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 embodiment of the invention provides, and for convenient explanation, only illustrates and embodiment of the invention relevant portion.
With the series-parallel first order of battery sheet be piezoresister R10;
With the series-parallel second level of battery sheet Transient Suppression Diode TVS; And
Be connected on the fuse F1 between battery sheet string and the piezoresister R10.
When the voltage instantaneous in the circuit was higher than representative value 50V, piezoresister R10 resistance descended rapidly, the big 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 influence the operate as normal 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, thus clamp the voltage at the effect that all components and parts of protection are played in the perhaps complete conducting of safety value.Quick fuse F1 fusing when transshipping in the circuit, thus entire circuit protected.
During the photovoltaic module operate as normal, the voltage of battery sheet string BT1, battery sheet string BT2, battery sheet string BT3 all be positive polarity and numerical value (representative value is+9 ~+13V) very approaching, the terminal box temperature is at-40 degree ~+85 degree, MCU circuit 4 control LED when long short dodge green.At this moment, ordered by the main frame data sent if MCU circuit 4 receives through telecommunication circuit 5, can duty and each parameter of terminal box be uploaded to main frame, main frame can be monitored this information uploading to Surveillance center the duty of each piece photovoltaic module.
If photovoltaic module receive partial occlusion or part battery sheet fault then the polarity of voltage of battery sheet string BT1, battery sheet string BT2, battery sheet string BT3 change or voltage value differs bigger.MCU circuit control this moment LED dodges red, treats that the communication line free time uploads duty when main frame sends request of data or receives Host Command.
If a plurality of operations of photovoltaic module in a few days receive continuously partial occlusion or part battery sheet fault then this assembly of MCU circuit preliminary judgement break down and need change as early as possible; Control LED normal glassy yellow treats that the communication line free time uploads duty when main frame sends request of data or receives Host Command.
The photovoltaic module monitoring system that the embodiment of the invention provided can be monitored the duty of photovoltaic module in real time; Can the duty of photovoltaic module be uploaded to main frame; When device fails, can show in real time; Malfunction can be implemented to upload and precisely locate, and can effectively avoid fault to enlarge simultaneously, reduces the loss.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a photovoltaic module monitoring system is characterized in that, said photovoltaic module monitoring system comprises:
With the battery sheet SP in many groups photovoltaic module, be used to protect many groups bypass diode of battery sheet string;
With battery sheet string and the said current sampling circuit that bypass diode is connected of organizing in many groups photovoltaic module more;
With battery sheet in many groups photovoltaic module polyphone connect many groups voltage sampling circuit;
Be connected the MCU circuit that is used for data processing with said current sampling circuit with said many group voltage sampling circuits;
Be connected the telecommunication circuit between the battery sheet string in said MCU circuit and the photovoltaic module; And
Power circuit for system's power supply.
2. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, said bypass diode respectively with photovoltaic module in corresponding battery sheet SP.
3. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, said current sampling circuit comprises:
Be connected the resistance R 1 between battery sheet string BT1 and the ground; And
Be connected the amplifier between the current sample port of battery sheet string BT1 and MCU circuit.
4. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, said voltage sampling circuit comprises:
Be connected to resistance R 2, resistance R 4, resistance R 6 between battery sheet string BT1, battery sheet string BT2, battery sheet 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, said MCU circuit is made up of MCU and peripheral circuit thereof.
6. photovoltaic module monitoring system as claimed in claim 1 is characterized in that said telecommunication circuit is made up of communication integrated circuit and peripheral circuit thereof.
7. photovoltaic module monitoring system as claimed in claim 1 is characterized in that, said 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, said holding circuit comprises:
With the series-parallel first order of battery sheet be piezoresister R10;
With the series-parallel second level of battery sheet Transient Suppression Diode TVS; And
Be connected on the fuse F1 between battery sheet string and the piezoresister R10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103676411A CN102841301A (en) | 2012-09-27 | 2012-09-27 | Photovoltaic assembly monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103676411A CN102841301A (en) | 2012-09-27 | 2012-09-27 | Photovoltaic assembly monitoring system |
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| CN102841301A true CN102841301A (en) | 2012-12-26 |
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| CN2012103676411A Pending CN102841301A (en) | 2012-09-27 | 2012-09-27 | Photovoltaic assembly monitoring system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196492A (en) * | 2013-03-27 | 2013-07-10 | 苏州市职业大学 | On-line real-time monitoring device for photovoltaic module |
| CN103888061A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and FM transmission |
| CN103888070A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on voltage detection and single-wire communication protocol |
| CN103888055A (en) * | 2014-03-05 | 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 thermistor temperature measurement |
| CN103888062A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
| CN103888067A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on Hall sensors and FM transmission |
| CN103888072A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and single-line communication protocol |
| CN104244512A (en) * | 2014-07-28 | 2014-12-24 | 李玉峰 | Boost type LED drive short circuit overload projecting circuit |
| CN106656033A (en) * | 2016-10-27 | 2017-05-10 | 上海电机学院 | Photovoltaic crystal plate online fault monitoring method |
| CN110140274A (en) * | 2016-12-07 | 2019-08-16 | 株式会社自动网络技术研究所 | The protection circuit and battery monitoring apparatus of battery monitoring apparatus |
| CN110297193A (en) * | 2019-06-25 | 2019-10-01 | 邢台职业技术学院 | Polytypic accumulator inspection system |
| CN112769186A (en) * | 2020-12-31 | 2021-05-07 | 中宇智慧光能科技有限公司 | Light energy road surface self-protection device |
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| EP0756178A2 (en) * | 1995-07-26 | 1997-01-29 | Canon Kabushiki Kaisha | Power supply device characteristic measuring apparatus and method |
| US6545211B1 (en) * | 1999-01-14 | 2003-04-08 | Canon Kabushiki Kaisha | Solar cell module, building material with solar cell module, solar cell module framing structure, and solar power generation apparatus |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196492A (en) * | 2013-03-27 | 2013-07-10 | 苏州市职业大学 | On-line real-time monitoring device for photovoltaic module |
| CN103888055A (en) * | 2014-03-05 | 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 thermistor temperature measurement |
| CN103888061A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and FM transmission |
| CN103888070A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on voltage detection and single-wire communication protocol |
| CN103888062A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
| CN103888067A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on Hall sensors and FM transmission |
| CN103888072A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and single-line communication protocol |
| CN104244512A (en) * | 2014-07-28 | 2014-12-24 | 李玉峰 | Boost type LED drive short circuit overload projecting circuit |
| CN106656033A (en) * | 2016-10-27 | 2017-05-10 | 上海电机学院 | Photovoltaic crystal plate online fault monitoring method |
| CN110140274A (en) * | 2016-12-07 | 2019-08-16 | 株式会社自动网络技术研究所 | The protection circuit and battery monitoring apparatus of battery monitoring apparatus |
| CN110297193A (en) * | 2019-06-25 | 2019-10-01 | 邢台职业技术学院 | Polytypic accumulator inspection system |
| CN112769186A (en) * | 2020-12-31 | 2021-05-07 | 中宇智慧光能科技有限公司 | Light energy road surface self-protection device |
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Application publication date: 20121226 |