CN108768296A - A kind of photovoltaic module monitoring method - Google Patents
A kind of photovoltaic module monitoring method Download PDFInfo
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- CN108768296A CN108768296A CN201810619100.0A CN201810619100A CN108768296A CN 108768296 A CN108768296 A CN 108768296A CN 201810619100 A CN201810619100 A CN 201810619100A CN 108768296 A CN108768296 A CN 108768296A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 30
- 238000005516 engineering process Methods 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000006855 networking Effects 0.000 claims abstract description 5
- 230000004927 fusion Effects 0.000 claims abstract description 4
- 238000010248 power generation Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000005457 optimization Methods 0.000 claims description 11
- 238000007726 management method Methods 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000013523 data management Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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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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- H02J13/0003—
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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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
-
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
-
- 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
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- Photovoltaic Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of photovoltaic module monitoring methods, including four steps：Distributed monitoring parameter measurement acquisition technique, safety and precise quickly controls operating technology, secure communication networking technology and complex information fusion and computer disposal platform technology, this method is exactly to receive dispatching of power netwoks by photovoltaic plant, real time monitoring and participation administration of power networks, namely " distributed generation, independent access, integrated dispatch ", the flexibility of the reliability and dispatching of power netwoks of operation of power networks could be improved in this way, Intelligent light overhead utility is the inexorable trend of electric power network technique development, Intelligent light overhead utility requires advanced integrated grid dispatching management, and collect control, it measures, communication, it is shown in integrated photovoltaic system monitor component system, this requirement of Intelligent light overhead utility development is just adapted to, it will play a significant role in Intelligent light overhead utility construction.
Description
Technical field
The present invention relates to photovoltaic generation application field more particularly to a kind of photovoltaic module monitoring methods.
Background technology
Photovoltaic generation is as a kind of emerging green energy resource, under the excitation of national governments' relevant policies, in the world
It is able to fast development.China to the end of the year 2017 accumulative installation is expected to more than 127GW.Along with the development of technology, photovoltaic upstream
Cost constantly declines, and the later maintenance and safety in power station gradually cause the attention of investor.Monitor photovoltaic module power generation number
According to and state, to improve system actual power efficiency and protection photovoltaic power generation equipment be of great significance, meanwhile, with scale
Solar power station China beginning build and put into operation successively, how to understand the operation conditions in power station in real time, how to meet
The monitoring demand of upper level system or power network dispatching system is power station owner and grid company institute questions of common interest, photovoltaic
Assemblies monitor system be occurred in use according to photovoltaic module loss, it is hidden split, block, damage in the case of, for understanding
Certainly it is positioned manually that failure is inaccurate, the difficult a solution to come into being of manual maintenance, it passes through to photovoltaic module voltage, electricity
The acquisition for flowing semaphore, is wirelessly transferred to backstage main website, to realize intelligent analysis, processing, management photovoltaic electric
Photovoltaic module service condition in standing establishes a set of photovoltaic generation intelligent management information platform.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of photovoltaic module monitoring methods.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
(1) distributed monitoring parameter measurement acquisition technique：
The deciding factor of photovoltaic module monitoring is cost and efficiency, is cut from these two aspects, the master of photovoltaic monitoring system
Monitoring parameter includes：System context meteorologic parameter mainly has temperature, intensity of solar radiation, wind speed and diastrous weather
Prediction etc., these physical quantitys can form the electric signal of the 4~20mA or l~5v of standard by corresponding sensor；Secondly
It is solar panel operating voltage and electric current, the two amounts can utilize direct current measurement acquisition module to acquire, to reach to this
Two amount real-time trackings, make system run on peak power output always；Monitoring parameter in terms of third is battery-operated
State and load real-time load amount monitoring, battery-operated state is mainly the prison of real-time remaining capacity, operating voltage and electric current
Control.System loading is respectively adopted alternating current-direct current electricity intelligent object for alternating current-direct current loading condition and realizes monitoring.
Photovoltaic system distribution area is big, and monitoring parameter is more and disperses, and acquisition and measurement to monitoring parameter bring very big
Challenge.
(2) safety and precise quickly controls operating technology：
The breaker of photo-voltaic power generation station, disconnecting switch, grounding switch, transformer, capacitor, alternating current-direct current station electricity consumption and its auxiliary
It helps equipment, protection signal and various unit state signals to be also all included into the monitoring range of computer supervisory control system, breaks to all
Road device, electric isolating switch, electric grounding knife-switch lock, main transformer on-load voltage regulation etc. realize that distant place control, main website are believed by communicating
Road acquires and handles the relevant informations such as the status information of relay protection, action report, failure wave-recording.
The acquisition of telemetry intelligence (TELINT) should keep relatively independent with protective device, and interior all breakers of standing, connect disconnecting switch
The operating status of the primary equipments such as ground disconnecting link, transformer, capacitor, the electricity consumption of alternating current-direct current station is directly acquired by measurement and control unit, all
Being related to controlling the position signal of primary equipment should be acquired by bifurcation.
(3) secure communication networking technology：
Distributed photovoltaic power generation generally accesses electric system by power distribution network, and electrical power distribution automatization system is needed to photovoltaic generation
It is monitored and manages, to ensure the safe and reliable operation of power grid.Electrical power distribution automatization system and distributed photovoltaic power generation system
Communication mode can there are many type, communication media also divide it is a variety of, including：The modes such as optical fiber, special line, carrier wave, wireless, wireless parties
More convenient, flexible arrangement is implemented in formula communication, but might have interference.Photovoltaic system monitor component unit requires secure communication group
Safety insulating device is deployed between photovoltaic plant intranet and extranet by net；Realize that double net logics are isolated by force；Block outer net to Intranet
Attack.
(4) complex information fusion and computer disposal platform technology：
Complex information is merged with computer disposal Platform Requirements using C/S mechanism as core, is had good opening, is easily expanded
Malleability, distributivity can meet the various applications of system, especially support ultra-large, magnanimity real time data processing, be suitble to extensive light
The requirement of volt power generation real time monitoring and information acquisition system.
Photovoltaic module monitoring system has platform courses center photovoltaic monitoring software system, data gathering equipment, assemblies monitor
The three parts such as terminal form, if to realize that component level monitors, need the monitoring module quantity arranged extremely huge, component prison
Terminal is surveyed by local radio communication technical transmission to data gathering equipment, then passes through telecommunication GPRS communications/local data
The transmission technologys such as network are transmitted to photovoltaic monitoring center.
Preferably, photovoltaic plant monitoring is exactly by the inverter of photovoltaic plant, header box, irradiation instrument, atmospherium, ammeter etc.
Equipment is connected to photovoltaic plant data collector by communication data line, carries out data acquisition, then by GPRS, Ethernet,
The communication modes such as WiFi, power carrier upload to network server or local computing, allow user in internet or local electricity
The tools such as brain check related data, and facilitate that power management personnel and user check and manage to the operation data of photovoltaic plant is
System.
Preferably, as monitoring optimize class product, photovoltaic module acquisition terminal be exactly the voltage to photovoltaic module, electric current and
The equipment that temperature information is acquired.Photovoltaic module voltage and current and the direct acquisition of component temperature, data pipe may be implemented in it
The functions such as reason, data transmission, it is different according to the purposes of data after acquisition as a kind of front end data acquisition equipment, it can be divided into excellent
Change and use photovoltaic module acquisition terminal and monitoring photovoltaic module acquisition terminal, photovoltaic module inspection acquisition terminal is exactly to belong to monitoring
With photovoltaic module acquisition terminal.Optimization is matched with photovoltaic module acquisition terminal and optimization class product, and optimization class product is main
There are power optimizer and power compensator；Monitoring is matched with photovoltaic module acquisition terminal and photovoltaic module monitoring device, light
Volt monitoring device mainly has monitoring photovoltaic plant equipment state, display and statistics photovoltaic operating condition, protection photovoltaic facility (mistake
Temperature, overvoltage, overcurrent or short circuit etc.) etc. functions.
Preferably, photovoltaic generation basic module is solar panel, and 18 solar panels connect to form solar energy
Battery strings, 3 solar cell strings connect to form solar components, i.e., we have seen that bulk solar panel, every
The output voltage of solar components is in 30V or so, and output current is in 9-10A, and generated output is between 270-300W.Solar energy group
Part has terminal box, the electric energy that solar power generation generates to be drawn through terminal box behind.
By the above-mentioned description of this invention it is found that compared to the prior art, the invention has the advantages that：
A kind of photovoltaic module monitoring method of the present invention, this method are exactly to receive dispatching of power netwoks, real time monitoring by photovoltaic plant
And administration of power networks is participated in, that is, " distributed generation, independent to access, integrated dispatch ", could improve operation of power networks in this way can
By the flexibility of property and dispatching of power netwoks, Intelligent light overhead utility is the inexorable trend of electric power network technique development, Intelligent light overhead utility
It is required that advanced integrated grid dispatching management, and collect and control, measure, communicating, being shown in integrated photovoltaic system monitor component
System has just adapted to this requirement of Intelligent light overhead utility development, it will be played in Intelligent light overhead utility construction
Important function.
Description of the drawings
Fig. 1 is photovoltaic generation monitoring system of the present invention；
Fig. 2 is photovoltaic generation monitoring system of the present invention；
Fig. 3 is principle of the invention figure；
Fig. 4 is solar power generation assembly assumption diagram of the present invention；
Fig. 5 is photovoltaic plant basic principle of the present invention；
Fig. 6 is photovoltaic generation monitoring system of the present invention；
Fig. 7 is photovoltaic generation monitoring system of the present invention；
Fig. 8 is principle of the invention figure；
Fig. 9 is that photovoltaic module equipment point of the present invention is deployed to ensure effective monitoring and control of illegal activities figure；
Figure 10 is that photovoltaic monitoring device point of the present invention is deployed to ensure effective monitoring and control of illegal activities figure；
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of photovoltaic module monitoring method, this method are divided into four steps：
(1) distributed monitoring parameter measurement acquisition technique：
The deciding factor of photovoltaic module monitoring is cost and efficiency, is cut from these two aspects, the master of photovoltaic monitoring system
Monitoring parameter includes：System context meteorologic parameter mainly has temperature, intensity of solar radiation, wind speed and diastrous weather
Prediction etc., these physical quantitys can form the electric signal of the 4~20mA or l~5v of standard by corresponding sensor；Secondly
It is solar panel operating voltage and electric current, the two amounts can utilize direct current measurement acquisition module to acquire, to reach to this
Two amount real-time trackings, make system run on peak power output always；Monitoring parameter in terms of third is battery-operated
State and load real-time load amount monitoring, battery-operated state is mainly the prison of real-time remaining capacity, operating voltage and electric current
Control.System loading is respectively adopted alternating current-direct current electricity intelligent object for alternating current-direct current loading condition and realizes monitoring.
Photovoltaic system distribution area is big, and monitoring parameter is more and disperses, and acquisition and measurement to monitoring parameter bring very big
Challenge.
(2) safety and precise quickly controls operating technology：
The breaker of photo-voltaic power generation station, disconnecting switch, grounding switch, transformer, capacitor, alternating current-direct current station electricity consumption and its auxiliary
Equipment, protection signal and various unit state signals is helped also all to be included into the monitoring range of computer supervisory control system.Break to all
Road device, electric isolating switch, electric grounding knife-switch lock, main transformer on-load voltage regulation etc. realize that distant place control, main website are believed by communicating
Road acquires and handles the relevant informations such as the status information of relay protection, action report, failure wave-recording.
The acquisition of telemetry intelligence (TELINT) should keep relatively independent with protective device, and interior all breakers of standing, connect disconnecting switch
The operating status of the primary equipments such as ground disconnecting link, transformer, capacitor, the electricity consumption of alternating current-direct current station is directly acquired by measurement and control unit, all
Being related to controlling the position signal of primary equipment should be acquired by bifurcation.
(3) secure communication networking technology：
Distributed photovoltaic power generation generally accesses electric system by power distribution network, and electrical power distribution automatization system is needed to photovoltaic generation
It is monitored and manages, to ensure the safe and reliable operation of power grid, electrical power distribution automatization system and distributed photovoltaic power generation system
Communication mode can there are many type, communication media also divide it is a variety of, including：The modes such as optical fiber, special line, carrier wave, wireless.Wireless parties
More convenient, flexible arrangement is implemented in formula communication, but might have interference, and photovoltaic system monitor component unit requires secure communication group
Safety insulating device is deployed between photovoltaic plant intranet and extranet by net；Realize that double net logics are isolated by force；Block outer net to Intranet
Attack.
(4) complex information fusion and computer disposal platform technology：
Complex information is merged with computer disposal Platform Requirements using C/S mechanism as core, is had good opening, is easily expanded
Malleability, distributivity can meet the various applications of system, especially support ultra-large, magnanimity real time data processing, be suitble to extensive light
The requirement of volt power generation real time monitoring and information acquisition system.
Photovoltaic module monitoring system has platform courses center photovoltaic monitoring software system, data gathering equipment, assemblies monitor
The three parts such as terminal form.If realizing that component level monitors, need the monitoring module quantity arranged extremely huge, component prison
Terminal is surveyed by local radio communication technical transmission to data gathering equipment, then passes through telecommunication GPRS communications/local data
The transmission technologys such as network are transmitted to photovoltaic monitoring center, as shown in Figure 1, 2, 3.
Wherein, photovoltaic plant monitoring is exactly to set the inverter of photovoltaic plant, header box, irradiation instrument, atmospherium, ammeter etc.
It is standby that photovoltaic plant data collector is connected to by communication data line, carry out data acquisition, then by GPRS, Ethernet,
The communication modes such as WiFi, power carrier upload to network server or local computing, allow user in internet or local electricity
The tools such as brain check related data, and facilitate that power management personnel and user check and manage to the operation data of photovoltaic plant is
System.
Wherein, optimize class product as monitoring, photovoltaic module acquisition terminal is exactly the voltage, electric current and temperature to photovoltaic module
The equipment that degree information is acquired.It may be implemented the direct acquisition of photovoltaic module voltage and current and component temperature, data management,
The functions such as data transmission.As a kind of front end data acquisition equipment (gathered data purposes such as Fig. 4), according to the use of data after acquisition
Way is different, can be divided into optimization photovoltaic module acquisition terminal and monitoring photovoltaic module acquisition terminal.Photovoltaic module inspection acquires
Terminal is exactly to belong to monitoring photovoltaic module acquisition terminal.Class product is mating makes with optimization for optimization photovoltaic module acquisition terminal
With optimization class product mainly has power optimizer and power compensator；Monitoring is supervised with photovoltaic module acquisition terminal and photovoltaic module
Coordinative composition of equipments is controlled to use, photovoltaic monitoring device mainly have monitoring photovoltaic plant equipment state, display and statistics photovoltaic operating condition,
Protect the functions such as photovoltaic facility (excess temperature, overvoltage, overcurrent or short circuit etc.).
Wherein, photovoltaic generation basic module is solar panel, and 18 solar panels connect to form solar-electricity
Pond is gone here and there, and 3 solar cell strings connect to form solar components, i.e., we have seen that bulk solar panel.Every too
The output voltage of positive energy component is in 30V or so, and output current is in 9-10A, and generated output is between 270-300W.Solar components
There are terminal box, the electric energy that solar power generation generates to draw (as shown in Figure 5) through terminal box behind.
Photovoltaic module monitoring system has platform courses center photovoltaic monitoring software system, data gathering equipment, assemblies monitor
The three parts such as terminal form.If realizing that component level monitors, need the monitoring module quantity arranged extremely huge.Component is supervised
Terminal is surveyed by local radio communication technical transmission to data gathering equipment, then passes through telecommunication GPRS communications/local data
The transmission technologys such as network are transmitted to photovoltaic monitoring center, as shown in Fig. 6, Fig. 7 and Fig. 8.
Fig. 9 and Figure 10 is the number of devices that best monitoring point is designed by taking 1MW photovoltaic plants as an example and the structure of position
Figure, 1MW inversion boxes are integrated by 14 header box inversions, and 1 header box band, 16 string formations, a string formation have 20 photovoltaic groups
Part, each nominal 260W of component generate electricity, our monitoring device optimizes 4 photovoltaic modulies of monitoring, and perfection is realized inexpensive, complete
Covering monitoring.
It is component detection terminal function and index below：
1 photovoltaic module of table monitors terminal function index
2 photovoltaic module of table monitors terminal capabilities index
It is module data manifold and index below：
3 data concentrator functional parameter of table
4 data concentrator performance indicator of table
A set of photovoltaic module monitoring terminal and wiring auxiliary, can monitor 4 photovoltaic module plates；One concentrator, can band
1023 nodes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (4)
1. a kind of photovoltaic module monitoring method, this method is divided into four steps：
(1) distributed monitoring parameter measurement acquisition technique：
The deciding factor of photovoltaic module monitoring is cost and efficiency, is cut from these two aspects, the main prison of photovoltaic monitoring system
Controlling parameter includes：System context meteorologic parameter mainly has temperature, intensity of solar radiation, wind speed and diastrous weather prediction
It can pass through the electric signal that corresponding sensor forms the 4~20mA or l~5v of standard Deng, these physical quantitys；Followed by too
Positive energy solar panel operating voltage and electric current, the two amounts can utilize direct current measurement acquisition module to acquire, to reach to the two
Real-time tracking is measured, system is made to run on peak power output always；Monitoring parameter in terms of third is battery-operated state
With load real-time load amount monitoring, battery-operated state is mainly the monitoring of real-time remaining capacity, operating voltage and electric current.System
System load is respectively adopted alternating current-direct current electricity intelligent object for alternating current-direct current loading condition and realizes monitoring.
Photovoltaic system distribution area is big, and monitoring parameter is more and disperses, and acquisition and measurement to monitoring parameter bring prodigious choose
War.
(2) safety and precise quickly controls operating technology：
Breaker, disconnecting switch, grounding switch, transformer, capacitor, the electricity consumption of alternating current-direct current station and its auxiliary of photo-voltaic power generation station are set
Standby, protection signal and various unit state signals are also all included into the monitoring range of computer supervisory control system, to all breakers,
Electric isolating switch, electric grounding knife-switch lock, main transformer on-load voltage regulation etc. realize that distant place control, main website are acquired by communication channel
And the relevant informations such as status information, action report, failure wave-recording for handling relay protection.
The acquisition of telemetry intelligence (TELINT) should keep relatively independent with protective device, stand interior all breakers, disconnecting switch, earthing
The operating status of the primary equipments such as lock, transformer, capacitor, the electricity consumption of alternating current-direct current station is directly acquired by measurement and control unit, all to be related to
The position signal of control primary equipment should be acquired by bifurcation.
(3) secure communication networking technology：
Distributed photovoltaic power generation generally accesses electric system by power distribution network, and electrical power distribution automatization system needs to carry out photovoltaic generation
Monitoring and management, to ensure the safe and reliable operation of power grid.The communication of electrical power distribution automatization system and distributed photovoltaic power generation system
Mode can there are many type, communication media also divide it is a variety of, including：The modes such as optical fiber, special line, carrier wave, wireless, wireless mode are logical
It is reliable to apply more convenient, flexible arrangement, but might have interference.Photovoltaic system monitor component unit requires secure communication networking,
Safety insulating device is deployed between photovoltaic plant intranet and extranet；Realize that double net logics are isolated by force；Outer net is blocked to attack Intranet
It hits.
(4) complex information fusion and computer disposal platform technology：
Complex information is merged with computer disposal Platform Requirements using C/S mechanism as core, has good open, easily extension
Property, distributivity, the various applications of system can be met, especially support ultra-large, magnanimity real time data processing, be suitble to large-scale photovoltaic
The requirement of power generation real time monitoring and information acquisition system.
Photovoltaic module monitoring system has platform courses center photovoltaic monitoring software system, data gathering equipment, assemblies monitor terminal
Equal three parts composition needs the monitoring module quantity arranged extremely huge if to realize that component level monitors, and assemblies monitor is whole
End passes through local radio communication technical transmission to data gathering equipment, then passes through telecommunication GPRS communications/local data network
Etc. transmission technologys be transmitted to photovoltaic monitoring center.
2. a kind of photovoltaic module monitoring method according to claim 1, it is characterised in that：
Photovoltaic plant monitoring is exactly to pass through the equipment such as the inverter of photovoltaic plant, header box, irradiation instrument, atmospherium, ammeter to lead to
Letter data line is connected to photovoltaic plant data collector, carries out data acquisition, is then carried by GPRS, Ethernet, WiFi, electric power
The communication modes such as wave upload to network server or local computing, and user is allow to be checked in the tools such as internet or local computing
Related data, the system for facilitating power management personnel and user to check and manage the operation data of photovoltaic plant.
3. a kind of photovoltaic module monitoring method according to claim 1, it is characterised in that：
Optimize class product as monitoring, photovoltaic module acquisition terminal be exactly to the voltage, electric current and temperature information of photovoltaic module into
The equipment of row acquisition.Photovoltaic module voltage and current and the direct acquisition of component temperature, data management, data transmission may be implemented in it
Etc. functions, it is different according to the purposes of data after acquisition as a kind of front end data acquisition equipment, optimization photovoltaic module can be divided into
Acquisition terminal and monitoring photovoltaic module acquisition terminal, photovoltaic module inspection acquisition terminal is exactly to belong to monitoring to be adopted with photovoltaic module
Collect terminal.Optimization is matched with photovoltaic module acquisition terminal and optimization class product, and optimization class product mainly has power optimizer
And power compensator；Monitoring is matched with photovoltaic module acquisition terminal and photovoltaic module monitoring device, photovoltaic monitoring device master
Have monitoring photovoltaic plant equipment state, display and statistics photovoltaic operating condition, protection photovoltaic facility (excess temperature, overvoltage, overcurrent or
Short circuit etc.) etc. functions.
4. a kind of photovoltaic module monitoring method according to claim 1, it is characterised in that：
Photovoltaic generation basic module is solar panel, and 18 solar panels connect to form solar cell string, and 3 too
It is positive can battery strings connect to form solar components, i.e., we have seen that bulk solar panel, every solar components
Output voltage is in 30V or so, and output current is in 9-10A, and generated output is between 270-300W.Solar components have wiring behind
Box, the electric energy that solar power generation generates are drawn through terminal box.
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