CN104935248A - Novel photovoltaic module monitoring unit - Google Patents
Novel photovoltaic module monitoring unit Download PDFInfo
- Publication number
- CN104935248A CN104935248A CN201410107800.3A CN201410107800A CN104935248A CN 104935248 A CN104935248 A CN 104935248A CN 201410107800 A CN201410107800 A CN 201410107800A CN 104935248 A CN104935248 A CN 104935248A
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- data
- monitoring unit
- module
- data acquisition
- photovoltaic module
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000007405 data analysis Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method 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
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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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 invention provides a novel photovoltaic module monitoring unit. The monitoring unit is formed by a photovoltaic module, a data acquisition control module, a storage battery and an inversion control unit module. The data acquisition control module does not carry out data operation and transmits collected data to a traditional photovoltaic inversion control unit in real time via a first communication circuit so that high speed acquisition and a transmission function of the data are realized. The inversion control unit comprises a central processor, receives electric energy data transmitted by the first communication circuit, carries out operation and integration according to a system power optimization strategy and feeds back an operation result to the monitoring unit via a second communication circuit so as to coordinate an output voltage and a current of each photovoltaic module. Finally, energy output of a system is increased maximumly. Aiming at problems of inconvenient data acquisition, power consumption and safety detection existing in actual operation, the monitoring unit can conveniently carry out cluster monitoring and management on a photovoltaic power generation assembly and can conveniently complete electric power data acquisition, gathering, data analysis and network monitoring.
Description
Technical field
A kind of novel photovoltaic module monitoring unit, the invention belongs to photovoltaic generation applied technical field, particularly monitors solar photovoltaic generation system.
Background technology
Solar photovoltaic generation system is connect by a series of photovoltaic module series and parallel to form.Be a kind of photovoltaic effect utilizing solar cell semiconductor material, solar radiation directly can be converted to the electricity generation system of electric energy.
Because photovoltaic plant is generally built in roof or remote area, scene is checked not very convenient, meanwhile, due to the physical characteristic of photovoltaic module, has during sunlight and just can produce high voltage, and the voltage of group string is more up to 1000V.Therefore in fault location investigation and high pressure detect security, very large challenge is brought to system maintenance personnel.In addition due to photovoltaic module manufacturing tolerance, cell panel is aging, the factor impacts such as the environmental conditions such as shade, fragment, dirt, each photovoltaic group generating efficiency has reduction in various degree, from short-board effect, the decrease in efficiency of single component or damage can bring to entire system efficiency and significantly affect.
In view of the data acquisition inconvenience existed in actual motion, power loss and fail safe test problems, in order to cluster monitoring and management can be carried out to photovoltaic electrification component more easily, complete electric power data acquisition easily, gather, data analysis and network monitoring, a kind of novel photovoltaic module monitoring unit is now proposed.
Summary of the invention
The present invention seeks to: the monitoring unit that a kind of solar photovoltaic assembly level is provided.It can overcome existing photovoltaic generating system and lack component level monitoring, data acquisition inconvenience, and high direct voltage threatens phenomenon and power loss serious problems, improves fail safe and detects and realize power-performance optimization.
For reaching above object, solution of the present invention is as follows:
A kind of novel photovoltaic module monitoring unit, for monitoring photovoltaic module generating.Described monitoring unit is by photovoltaic module, and data acquisition and control module, storage battery, inversion control unit module forms, as shown in Figure 1.Data acquisition and control module comprises data acquisition unit and data acquisition instrument, as shown in Figure 2.Data acquisition instrument comprises the equipment such as header box, irradiation instrument, atmospherium, ammeter.Data acquisition instrument input is connected on photovoltaic module, is gathered the communication data of these equipment by photovoltaic plant data acquisition unit.
Data acquisition and control module itself does not carry out data operation, being only real-time transmitted to traditional photovoltaic inversion control unit by collecting data via the first telecommunication circuit, realizing high speed acquisition and the transfer function of data.Containing central processing unit in inversion control unit, after the energy data that reception first telecommunication circuit is transmitted, carry out computing and comprehensive according to the optimized strategy of system power, and by operation result via second communication electronic feedback to monitoring unit, as shown in Figure 3.Monitoring unit performs the order that this main control unit is assigned, coordinate output voltage and the electric current of each photovoltaic module, and make the DC bus-bar voltage of every optical crosstalk photovoltaic assembly equal, reach and reduced because of photovoltaic array part or intermittently to cover or photovoltaic module series and parallel mismatch problems that the factor such as aging causes, ensured that each photovoltaic module is operated in best operating point.
Its technical scheme is such: monitoring unit is characterised in that: it comprises photovoltaic module, data acquisition and control module, storage battery, inversion control unit module.Described data acquisition and control module is connected with data acquisition instrument output by serial data bus.Described data acquisition instrument input is connected with photovoltaic module.Described data acquisition unit is by RS485 and each data acquisition instrument communication data.Described first telecommunication circuit is the telecommunication circuit between data acquisition and control module and photovoltaic inversion control unit.Required second communication circuit is arranged in inversion control control unit, communicates with data acquisition unit by wired or wireless mode.Described inverter controller inside can perform MPPT algorithm.The communication of described inversion control unit and described data acquisition and control module is undertaken by wired or wireless mode is two-way, is completed by described first telecommunication circuit and described second communication circuit.
It is further characterized in that: have serial communication circuit and wireless module in microprocessor in above-mentioned data acquisition and control module.Can acquisition instrument transmission come temperature signal, voltage signal, current signal, position signalling, switching signal.
Accompanying drawing explanation
Fig. 1 is photovoltaic module monitoring unit composition schematic diagram.
Fig. 2 is that data acquisition and control module forms schematic diagram.
Fig. 3 is that monitoring unit implements schematic diagram
Embodiment
As shown in Figure 1, the composition schematic diagram of a kind of novel photovoltaic module monitoring unit provided by the invention.It comprises photovoltaic module (100), data acquisition and control module (101), storage battery (102), inversion control unit module (103).
Shown in Fig. 2, be connected with data acquisition instrument (201) between each photovoltaic module (200), data acquisition unit (202) input is by RS-485 connection data acquisition instrument.Data acquisition unit and data acquisition instrument form data acquisition and control module (203) jointly.The data gathered are transferred to inverter controller by the first telecommunication circuit (204) by data acquisition unit.
Shown in Fig. 3, optimal power computing, containing MPPT algorithm, is carried out according to the first telecommunication circuit transmission of information in circuit control device (300) inside.Inverter controller inside also comprises second communication circuit (301), the communication of inverter controller and data acquisition controller (203) is undertaken by wired or wireless mode is two-way, is completed by the first telecommunication circuit (204) and second communication circuit (301).
Claims (2)
1. the present invention proposes a kind of novel photovoltaic module monitoring unit, be characterized as: this monitoring unit is by photovoltaic module, and data acquisition and control module, storage battery, inversion control unit module forms.This data acquisition and control module itself does not carry out data operation, being only real-time transmitted to traditional photovoltaic inversion control unit by collecting data via the first telecommunication circuit, realizing high speed acquisition and the transfer function of data.Containing central processing unit in inversion control unit, receive the energy data that the first telecommunication circuit is transmitted, computing is carried out with comprehensive according to the optimized strategy of system power, and by operation result via second communication electronic feedback to monitoring unit, coordinate output voltage and the electric current of each photovoltaic module, finally reach the energy improving system to greatest extent and export.
2. novel photovoltaic module monitoring unit according to claim 1, has 485 communication interfaces, wave point in microcontroller.The first telecommunication circuit connected can acquisition parameter have: temperature signal, voltage signal, current signal, position signalling, switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107800.3A CN104935248A (en) | 2014-03-21 | 2014-03-21 | Novel photovoltaic module monitoring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107800.3A CN104935248A (en) | 2014-03-21 | 2014-03-21 | Novel photovoltaic module monitoring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104935248A true CN104935248A (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410107800.3A Pending CN104935248A (en) | 2014-03-21 | 2014-03-21 | Novel photovoltaic module monitoring unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553107A (en) * | 2016-02-23 | 2016-05-04 | 国网上海市电力公司 | Summarizing device |
| CN106788216A (en) * | 2017-02-10 | 2017-05-31 | 阳光电源股份有限公司 | A kind of photovoltaic inverting system and photovoltaic inversion method |
| CN108323219A (en) * | 2017-03-22 | 2018-07-24 | 胡炎申 | The control method of photovoltaic generating system and MPPT maximum power point tracking MPPT |
| CN108427356A (en) * | 2018-06-04 | 2018-08-21 | 天合光能股份有限公司 | A kind of intelligent photovoltaic data collecting system of photovoltaic module and inverter |
| CN111786412A (en) * | 2020-07-16 | 2020-10-16 | 北京诺飞新能源科技有限责任公司 | Crystalline silicon cell photovoltaic power generation system |
-
2014
- 2014-03-21 CN CN201410107800.3A patent/CN104935248A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553107A (en) * | 2016-02-23 | 2016-05-04 | 国网上海市电力公司 | Summarizing device |
| CN106788216A (en) * | 2017-02-10 | 2017-05-31 | 阳光电源股份有限公司 | A kind of photovoltaic inverting system and photovoltaic inversion method |
| CN106788216B (en) * | 2017-02-10 | 2020-01-24 | 阳光电源股份有限公司 | Photovoltaic inversion system and photovoltaic inversion method |
| CN108323219A (en) * | 2017-03-22 | 2018-07-24 | 胡炎申 | The control method of photovoltaic generating system and MPPT maximum power point tracking MPPT |
| WO2018170803A1 (en) * | 2017-03-22 | 2018-09-27 | 胡炎申 | Photovoltaic power generation system, and method for controlling maximum power point tracking (mppt) |
| CN108427356A (en) * | 2018-06-04 | 2018-08-21 | 天合光能股份有限公司 | A kind of intelligent photovoltaic data collecting system of photovoltaic module and inverter |
| CN111786412A (en) * | 2020-07-16 | 2020-10-16 | 北京诺飞新能源科技有限责任公司 | Crystalline silicon cell photovoltaic power generation system |
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Application publication date: 20150923 |