CN205142136U - Novel photovoltaic fault monitoring system - Google Patents

Novel photovoltaic fault monitoring system Download PDF

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Publication number
CN205142136U
CN205142136U CN201520927740.XU CN201520927740U CN205142136U CN 205142136 U CN205142136 U CN 205142136U CN 201520927740 U CN201520927740 U CN 201520927740U CN 205142136 U CN205142136 U CN 205142136U
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CN
China
Prior art keywords
monitoring system
novel photovoltaic
fault monitoring
solar cell
photovoltaic fault
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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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CN201520927740.XU
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Chinese (zh)
Inventor
田野
李晓娜
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201520927740.XU priority Critical patent/CN205142136U/en
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Publication of CN205142136U publication Critical patent/CN205142136U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/126Systems 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

Abstract

The utility model discloses a novel photovoltaic fault monitoring system, include: environmental information collection module by temperature sensor and light intensity sensor constitute by the control module that current detection device and microprocessor constitute, zigBee wireless communication module, is held by the control that computer and network server constitute. The utility model discloses can monitor and connect in parallel in the bypass diode of solar cell cluster generate current and whether take place the hot spot effect trouble, the management restoration of being convenient for to current data analysis real time monitoring solar cell whether, adopting radio communication to carry out transmitting data, having avoided complicated wiring, the expansibility is higher, has improved the security performance, adopt the development of visual basic6.0 to accomplish user interface, can develop powerful under the windows environment high -efficient, fast, the abundant application software system of graphic interface.

Description

A kind of Novel photovoltaic fault monitoring system
Technical field
The utility model belongs to field of photovoltaic power generation, is specifically related to a kind of Novel photovoltaic fault monitoring system.
Background technology
In recent years, photovoltaic power generation technology development, photovoltaic generation application is popularized rapidly.But there is the barriers such as trees, electric pole, cable around building, when lighting angle is along with season, time are when changing, above barrier just may produce local shades on photovoltaic array, the solar module of crested in series arm, will be taken as other energy having the solar module of illumination to produce of load consumption.The solar module of crested now can generate heat, Here it is hot spot effect.The photovoltaic battery panel be blocked can electronegative pressure, become the load in circuit, and the energy of photovoltaic battery panels generation that other normally work is consumed with form of heat, the long time integration of this heat can damage the encapsulating material of photovoltaic battery panel, even destroy the physical structure of photovoltaic battery panel, and will permanent damages be caused.Hot spot effect is very general in the practical application of solar cell, and hot spot effect has a strong impact on performance and the life-span of solar cell, and has very large danger.
The method of hot spot phenomenon of avoiding of generally acknowledging at present is at the other reverse parallel connection bypass diode of photovoltaic cell monomer, if certain part photovoltaic cell monomer is blocked and brings negative pressure, so bypass diode conducting, this part photovoltaic cell monomer is shorted, and avoids the damage of photovoltaic module physical structure.Electric current is not had to pass through when diode normally works, the diode current flow when there is hot spot effect, have electric current to pass through, by the current signal in monitor diode and utilize microprocessor to signal carry out analysis judgement can effectively monitor response solar cell whether there is hot spot effect.
ZigBee technology, since ZigBee alliance releases specification, has obtained the attention in domestic and international wireless sensing field always, has been widely used in the every field such as industry, agricultural, family at present.The information utilizing ZigBee technology that data acquisition node can be realized to collect to be sent on telegon by radio communication and to carry out showing and controlling on host computer, and this is a kind of brand-new Information acquisi-tion technology.This method effectively can solve the wiring problem of cable network and safeguard the problem that the cost brought increases.ZigBee technology also has low-power consumption, networking flexibility, reliability is high, extendibility good and the advantage of network self-healing.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of Novel photovoltaic fault monitoring system, whether hot spot fault can occur Real-Time Monitoring solar cell, and can carry out reporting to the police and locating.
The technical solution of the utility model is, a kind of Novel photovoltaic fault monitoring system, comprises environment information acquisition module, control module, ZigBee wireless communication module, monitoring client.Environment information acquisition module can collecting temperature, photoenvironment information; Control module can gather the diode current signal that is connected anti-parallel to solar cell string and carry out data analysis; Wireless communication module can realize the data transfer communications of control module and monitoring client; Monitoring client VisualBasic6.0 develops completing user interface, realizes fault alarm and carries out location, fault zone.
Described bypass diode is all connected with control module.
Described control module comprises current collecting device and microprocessor: current collecting device collection is connected anti-parallel to the diode current signal of solar cell string, current signal carries out the conversion between two class signals through a series of translation circuit, the digital signal enabling analog signal can convert microprocessor to process; Microprocessor carries out analyzing and processing to the current signal gathered.
Described ZigBee wireless communication module comprises multiple dispensing device and a receiving system.
Described ZigBee radio communication advantage is that network stabilization is good, without the need to manual intervention, ensures that whole system still can normally work; Have employed the collision-avoidance mechanism of CSMA-CA, reliable communications; Procotol is simple, and development time cost is lower, and development cost is low; Time delay is short, and network capacity is large.
Described monitoring client is made up of cyber-net server, and monitoring client VisualBasic6.0 develops completing user interface.
Described monitoring client user interface comprises: data message display interface, fault zone locating interface, historical information interface, alert interface.
Described user interface is developed by VisualBasic6.0, and it is a kind of visual, and the structuring high-level programming language of object-oriented and employing event driven manner, can be used for the application program under developing Windows environment.Select the MSComm control of VisualBasic6.0, this control can develop the compunication program using serial ports of computers very easily, realizes transfer of data, makes visual, the intelligent reinforcement of photovoltaic malfunction monitoring, improves the photovoltaic generation efficiency of management.
Accompanying drawing explanation
Fig. 1 is the communication network architecture block diagram of new-type photovoltaic fault monitoring system in the utility model embodiment.
Fig. 2 is working-flow figure in the utility model embodiment.
Fig. 3 is ZigBee module hardware composition in the utility model embodiment.
Embodiment
Be described in further detail embodiment of the present utility model below in conjunction with accompanying drawing, described example is the statement of the utility model partial content, does not represent whole embodiment, therefore can not be interpreted as the restriction to the scope of the claims of the present invention.
Fig. 1 is the structured flowchart of system in the utility model embodiment.Assembly comprises the environment information acquisition module be made up of temperature sensor and optical sensor, the control module be made up of current sensing means and microprocessor, ZigBee wireless communication module, the monitoring client be made up of cyber-net server.Photovoltaic cell string is in parallel with bypass diode, and bypass diode is connected with control module, and control module carries out information transmission by ZigBee wireless communication module and monitoring client.
As shown in Figure 2, the detailed process of this monitoring assembly work is:
When photovoltaic array shadow-free, bypass diode no current passes through, when photovoltaic array producing local shades, the photovoltaic battery panel be blocked can electronegative pressure, becomes the load in circuit, now bypass diode conducting, photovoltaic cell monomer is shorted, and diode has electric current to pass through.Diode is connected with control module, and control module can the current data in monitor diode to be gone forward side by side row relax, by ZigBee wireless communication module by current data information transmission to monitoring client.Meanwhile, data are passed to microprocessor by data acquisition unit by temperature sensor and optical sensor, then transfer data to monitoring client by ZigBee wireless communication module.Monitoring client host computer can the data receiver situation of real-time perception receiving system, and when receiving system obtains data, monitoring client host computer also can open the communication port with receiving system, receives the various data that it sends.Host computer carries out convergence analysis process to each information, judges whether photovoltaic array breaks down also, and failure judgement position.
The model of ZigBee wireless communication chips selects CC2530 as shown in Figure 3, and CC2530 is that TI company supports the system on chip chip of IEEE802.15.4/ZigBee agreement in the second generation that 2.4GHz frequency range is released.Its inside is integrated with high-performance radio-frequency transceiver, industrial standard enhancement mode 8051MCU kernel, 256KBFlashROM and 8KBRAM, only needs few external component, and stable performance and power consumption is extremely low.Control module sends data to monitoring client by ZigBee through UART translation interface.Meanwhile, monitoring client is monitored recovery array and is sent instruction and controls.
Adopt CC2530 single-chip microcomputer as the acp chip of harvester, it includes 8051 microcontroller cores of high-performance and low-power consumption, can carry out the operation of responsible node as processor, processes the information collected; Comprise analog-digital converter (ADC), can the analog signal collected be converted to digital signal, and without the need to other auxiliary circuits; This chip incorporates ZigBee radio frequency (RF) front end, be responsible for carrying out radio communication with host node, exchange message also sends data.
Receiving system receives by RF radio-frequency module the power supply signal that acquisition node sends, and after CC2530 process, sends data to monitoring client host computer by UART translation interface.
Monitoring client host computer can real-time listening, reception, the parsing receiving system information of sending, they can be saved in real time in table corresponding in database, and can show with the form such as form, figure in real time, also the data value that certain stage, certain or some harvesters send can be retrieved, extracts, changes, shown (form, chart etc.), when some value exceedes reservation threshold, system will provide early warning information in time.
User interface is developed by VisualBasic6.0, and it is a kind of visual, and the structuring high-level programming language of object-oriented and employing event driven manner, can be used for the application program under developing Windows environment.User interface comprises draws together: data message display interface, fault zone locating interface, historical information interface, alert interface.Administrative staff can facilitate and carry out timely monitoring and sending controling instruction, and this interface makes visual, the intelligent reinforcement of photovoltaic malfunction monitoring, improves the photovoltaic generation efficiency of management.
This system judges photovoltaic fault by merging various information, and improve the accuracy rate of judgement, adopt radio communication to carry out transmission data, avoid complicated wiring, autgmentability is higher, improves security performance.

Claims (9)

1. a Novel photovoltaic fault monitoring system, this system is made up of environment information acquisition module, control module, wireless communication module and monitoring client, it is characterized in that: the some bypass diodes of each solar cell string reverse parallel connection; Control module is used for monitoring and gathering electric current in diode and carry out data processing, judges whether solar cell occurs hot spot effect; Wireless communication module realizes the information transmission of control module and monitoring client.
2. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that each bypass diode being parallel to solar cell string is all connected with control module.
3. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that environment information acquisition module is made up of temperature sensor and optical sensor, and the temperature and light of Real-time Collection solar cell string is according to data.
4. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that control module comprises current collecting device and microprocessor.
5. a kind of Novel photovoltaic fault monitoring system according to claim 1, it is characterized in that the topmost object of current sensing means is exactly the conversion carrying out between two class signals through a series of translation circuit by signal to be detected, the digital signal enabling analog signal can convert microprocessor to process.
6. a kind of Novel photovoltaic fault monitoring system according to claim 1, it is characterized in that wireless communication module uses ZigBee wireless communication technology, module comprises multiple dispensing device and a receiving system.
7. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that monitoring client is made up of cyber-net server.
8. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that monitoring client user interface is developed by VisualBasic6.0, comprising: data message display interface, fault zone display interface, historical information interface, alert interface.
9. a kind of Novel photovoltaic fault monitoring system according to claim 1, is characterized in that monitoring client can be reported to the police and carry out fault location.
CN201520927740.XU 2015-11-20 2015-11-20 Novel photovoltaic fault monitoring system Expired - Fee Related CN205142136U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105871334A (en) * 2016-06-06 2016-08-17 保定嘉盛光电科技股份有限公司 Solar cell module provided with temperature control
CN106357220A (en) * 2016-10-12 2017-01-25 福州大学 Distributed photovoltaic module string and module IV characteristic curve on-line measurement system
CN107528541A (en) * 2017-09-22 2017-12-29 南京天创电子技术有限公司 The hot spot detection means and detection method of a kind of photovoltaic module
CN108449050A (en) * 2018-03-01 2018-08-24 上海电机学院 Photovoltaic module intelligent inspection system and method applied to photovoltaic generating system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105871334A (en) * 2016-06-06 2016-08-17 保定嘉盛光电科技股份有限公司 Solar cell module provided with temperature control
CN105871334B (en) * 2016-06-06 2018-03-23 保定嘉盛光电科技股份有限公司 One kind is with temperature controlled solar cell module
CN106357220A (en) * 2016-10-12 2017-01-25 福州大学 Distributed photovoltaic module string and module IV characteristic curve on-line measurement system
CN107528541A (en) * 2017-09-22 2017-12-29 南京天创电子技术有限公司 The hot spot detection means and detection method of a kind of photovoltaic module
CN108449050A (en) * 2018-03-01 2018-08-24 上海电机学院 Photovoltaic module intelligent inspection system and method applied to photovoltaic generating system
CN108449050B (en) * 2018-03-01 2019-10-08 上海电机学院 Photovoltaic module intelligent polling method applied to photovoltaic generating system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160406

Termination date: 20161120

CF01 Termination of patent right due to non-payment of annual fee