CN110011616A - A kind of photovoltaic module fault diagnosis system and method - Google Patents
A kind of photovoltaic module fault diagnosis system and method Download PDFInfo
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- CN110011616A CN110011616A CN201910245121.5A CN201910245121A CN110011616A CN 110011616 A CN110011616 A CN 110011616A CN 201910245121 A CN201910245121 A CN 201910245121A CN 110011616 A CN110011616 A CN 110011616A
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- 238000010248 power generation Methods 0.000 claims abstract description 112
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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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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 present application discloses a kind of photovoltaic module fault diagnosis system and method, and the photovoltaic module fault diagnosis system includes photovoltaic module, for collecting solar energy, and is converted solar energy into electrical energy；Data acquisition module, for acquiring the data information of the photovoltaic module, and by the data information transfer of acquisition to control module；Control module compares and analyzes the data information of the acquisition and preset theoretical value；Calculation processing module is used to carry out calculation processing to the data information, calculate power generation energy valid value, data analysis module compares and analyzes the average value of the power generation energy valid value and the power generation efficiency of the previous day, warning module is according to comparing result, determine whether to trigger early warning, to remind maintenance personnel to overhaul photovoltaic module.So photovoltaic component faults can be detected by herein described fault diagnosis system automatically, reduce maintenance cost, improve the satisfaction of user, and maintenance efficiency is high.
Description
Technical field
The present application relates to photovoltaic module fault diagnosis technology fields, and in particular to a kind of photovoltaic module fault diagnosis system
System and method.
Background technique
Solar energy is increasingly valued by people as a kind of efficient new energy, current solar energy city
Field generallys use PWM control mode and adjusts the generated energy of photovoltaic module and the management of charging and discharging to battery.
Management of charging and discharging function is only arranged in existing photovoltaic module, and overcurrent or mistake can be also simply arranged in some photovoltaic modulies
Pressure protection or simple warning function, for example a current or voltage reference value is set, when the electric current of the generated energy of photovoltaic module
Or voltage be more than reference value when, then automatically disconnect or triggering warning function.However although existing photovoltaic module may be implemented
Self-protection function, but failure can not but be diagnosed automatically when photovoltaic module breaks down, it is all to need manually to go now
Field investigation trouble-shooting position, and only manually go investigation to find out of order photovoltaic module simultaneously in large-scale photovoltaic module
It is repaired, relatively time-consuming and inefficiency.
Summary of the invention
The present application provides a kind of photovoltaic module fault diagnosis system and method, to solve the photovoltaic module of the prior art
It needs manually to check when a failure occurs and finds out failure, check inefficiency, the high problem of the cost of manual maintenance.
To solve the above problems, the present application provides a kind of photovoltaic module fault diagnosis system, comprising:
Photovoltaic module for collecting solar energy, and converts solar energy into electrical energy；
Data acquisition module, for acquiring the data information of the photovoltaic module, the data information includes: irradiation level letter
Breath, current information, information of voltage；And by the data information transfer of acquisition to control module；
Control module receives the data information of the data collecting module collected, and the data of the acquisition is believed
Breath is compared and analyzed with preset theoretical value；And
PC work station, the PC work station further comprises: calculation processing module, data analysis module and early warning mould
Block,
The calculation processing module, for carrying out calculation processing to the data information, according to the spoke of the photovoltaic module
The real-time power generation that illuminance information, current information and information of voltage calculate the photovoltaic module can valid value NkAnd the power generation of every day
Efficiency average value Ny avg；
The data analysis module, for receiving the real-time power generation energy valid value NkAnd the power generation efficiency of every day is average
Value Ny avg；By the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes；
The warning module, for according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avg
Comparing result, it is determined whether triggering early warning.
Optionally, the data analysis module is by the real-time power generation energy valid value NkWith the power generation efficiency average value of the previous day
Ny avgIt compares and analyzes and specifically includes: if power generation in real time can valid value NkMore than the power generation efficiency average value N of the previous dayy avg's
20%, then such situation number is monitored and records, such as the number accounting of record is more than the 5% of total degree, then triggers alarm.
Optionally, the data acquisition module includes irradiance sensor, current sensor and voltage sensor, described
Irradiance sensor is for the irradiation level information E outside real-time monitoring roomk, the current sensor is for incuding photovoltaic module
The current information Ak, the voltage sensor is for incuding the information of voltage V of photovoltaic modulek。
Optionally, the real-time power generation that the calculation processing module calculates the photovoltaic module can valid value NkFormula are as follows: Nk
=Ek/(AkVk), wherein K is the times of collection of data acquisition module, and K is 1~1440 minute/acquisition interval time.
Optionally, the control module compares and analyzes the data information acquired in real time with preset theoretical value
Include: will include irradiation level information, current information, any one information in information of voltage be more than the preset theoretical value and
Number adds up 5% that accounting is more than total degree, then controls alert；Such as irradiation level information, current information, information of voltage
In any one information be more than that its theoretical value and number add up accounting less than 5%, then it is without exception, go successively to monitoring analysis shape
State.
Optionally, the PC work station further includes data reception module, and the data reception module is for receiving the control
The data information of module feedback processed, and the data information is sent to the calculation processing module.
The present application also provides a kind of photovoltaic module method for diagnosing faults, comprising steps of
Data acquisition module acquires the data information of photovoltaic module in real time, and the data information includes: irradiation level information, electricity
Stream information, information of voltage；And the data information of acquisition is sent to control module；
Control module receives the data information of the data collecting module collected, and by the data information of the acquisition
It is compared and analyzed with preset theoretical value；
Calculation processing module carries out calculation processing to the data information, calculates the real-time power generation efficiency of the photovoltaic module
Value NkAnd the power generation efficiency average value N of every dayy avg；
The real-time power generation that data analysis module receives the calculating can valid value NkAnd the power generation efficiency average value of every day
Ny avg；And by the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes；
Warning module is used for according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgComparison
As a result, it is determined whether triggering early warning.
Optionally, the data analysis module is by the real-time power generation energy valid value NkWith the power generation efficiency average value of the previous day
Ny avgIt compares and analyzes and specifically includes: if power generation in real time can valid value NkMore than the power generation efficiency average value N of the previous dayy avg's
20%, then such situation number is monitored and records, such as the number accounting of record is more than the 5% of total degree, then triggers alarm.
It optionally, further comprise the average value N for the power generation energy valid value for calculating the previous dayy avgAs reference value, specifically
Are as follows: it can valid value N as recorded power generation in real timekMore than the power generation efficiency average value N of the previous dayy avg20% number accounting be less than it is total
The 5% of number, then by the power generation energy valid value average value N of the photovoltaic module of same day monitoringt avgUpdate the power generation energy as second day
The reference value of valid value.
Optionally, the calculation processing module calculates the photovoltaic module according to the data information that the control module is fed back
Real-time power generation can valid value Nk, using algorithm are as follows: Nk=Ek/(AkVk)；Wherein K be times of collection, K be 1~1440 minute/adopt
Collect interval time；NkIt can valid value to generate electricity in real time；
EkFor kth time sampler chamber external irradiation degree；
AkFor kth time sampling photovoltaic module electric current；
VkFor kth time sampling photovoltaic component voltage.
Optionally, the control module compares and analyzes the data information acquired in real time with preset theoretical value
Including: will be more than its theoretical value including any one information in irradiation level information, current information, information of voltage and number adds up
Accounting is more than the 5% of total degree, then controls alert.
Compared with prior art, photovoltaic module fault diagnosis system and method provided by the invention, are adopted by the data
Collection module acquires the data information of photovoltaic module in real time, and the data information is fed back to control module, control module according to
The data information of the acquisition and the presupposition theory value of photovoltaic module compare and analyze；And simultaneously to described in PC work station feedback
Data information, the calculation processing module of PC work station calculate the power generation of real-time power generation the energy valid value and the previous day of photovoltaic module
Can valid value, the data analysis module of the PC work station by the real-time power generation of the photovoltaic module can valid value and the previous day hair
The average value of electric energy valid value is analysed and compared, and warning module is according to comparing result, it is determined whether triggering early warning, so that decision is
It is no need system for prompting operation maintenance personnel rush towards scene photovoltaic module is safeguarded, so pass through herein described fault diagnosis system
System can be reduced maintenance cost, improve the satisfaction of user.
Using the embodiment of the present application, maintenance personnel is according to the prison of the photovoltaic module fault diagnosis system provided by the present application
Surveying situation and capable of finding faster needs the specific location for the photovoltaic module safeguarded that can be significantly reduced and look for so that maintenance efficiency is high
It is out of order the time needed for position, reduces maintenance cost.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram for photovoltaic module fault diagnosis system that one embodiment of the invention provides；
Fig. 2 is a kind of photovoltaic module method for diagnosing faults flow chart that one embodiment of the invention provides；
Fig. 3 be another embodiment of the present invention provides a kind of photovoltaic module method for diagnosing faults flow chart.
Specific embodiment
Many details are explained in the following description in order to fully understand the application.But the application can be with
Much it is different from other way described herein to implement, those skilled in the art can be without prejudice to the application intension the case where
Under do similar popularization, therefore the application is not limited by following public specific implementation.
Referring to Fig. 1, it is the structural block diagram of the embodiment of the present application photovoltaic module fault diagnosis system.The present invention one is implemented
Example provide a kind of photovoltaic module fault diagnosis system, including photovoltaic module 10, data acquisition module 20, control module 30, with
And PC work station 40.
The photovoltaic module 10 is converted solar energy into electrical energy for collecting solar energy.The photovoltaic module 10 includes
Preceding glass sheet, back-panel glass and the photovoltaic chip between preceding glass sheet and back-panel glass, the preceding glass sheet with it is described
It is bonded between photovoltaic chip by PVB, it is Nian Jie by PVB between the back-panel glass and the photovoltaic chip.
The data acquisition module 20 is used to acquire the data information of the photovoltaic module 10, and by the data of acquisition
Information is transferred to control module 30；The data information includes irradiation level information, current information, information of voltage.
Specifically, the data acquisition module 20 includes irradiance sensor, current sensor and voltage sensor.Institute
Irradiance sensor is stated for irradiation level information E outside real-time monitoring roomk, the current sensor is for incuding photovoltaic module electric current
Information Ak, the voltage sensor is for incuding photovoltaic module information of voltage Vk；Pass through the photovoltaic module current information of induction
AkWith induction photovoltaic module information of voltage VkThe power information P of photovoltaic module can be calculatedk=Ak x Vk, wherein K adopts for data
Collect the times of collection of module, i.e. K is 1~1440 minute/acquisition interval time, such as in the present embodiment, the data acquisition
Module can be spaced acquisition in every 5 minutes once, i.e., and K=288 times；Or interval acquisition in every 30 seconds is primary, i.e., k=2880 times；
It is 1 minute, then k=1440 times when the acquisition interval time；It is 10 minutes, then k=144 times when the acquisition interval time；When interval
Between 15 minutes, then k=96 times；When interval time 30 minutes, then k=48 times, and so on calculated.
The control module 30, receives the data information that the data acquisition module 20 acquires, and by the number of the acquisition
It is believed that breath is compared and analyzed with preset theoretical value, to control whether that alert, the control module 30 simultaneously will
The data information feeds back to PC work station 40.
Specifically, the control module 30 acquires the acquisition module 20 irradiation level information, current information, voltage letter
It ceases and is compared and analyzed with the irradiation level theoretical value, electric current theoretical value, voltage theoretical value of preset photovoltaic module, such as irradiation level
Any one of information, current information, information of voltage information is more than its theoretical value and number adds up accounting more than total degree
5%, then alert is controlled, while the control module 30 feeds back the data information, PC work station to PC work station
Receive the data information and is further processed and analyzes；As without exception, monitoring state, specific algorithm such as formula are gone successively to
(1) shown in.
Wherein, when the preset irradiation level theoretical value, electric current theoretical value, voltage theoretical value are by dispatching from the factory IV test or
Actual measurement obtains, the size of theoretical value size and photovoltaic module, if splicing, cutting, it is series-parallel the problems such as it is related.
The data information that the PC work station 40 is fed back according to the control module 30, it is real-time to calculate the photovoltaic module
Power generation can valid value NkWith the power generation efficiency average value N of every dayy avg, and will generate electricity in real time can valid value NkWith the power generation of the previous day
Efficiency average value Ny avgIt analyses and compares, to determine whether that triggering is alarmed and system for prompting operation maintenance personnel is rushed towards scene and examined
It looks into and repairs.
Specifically, the PC work station 40 includes data reception module 401, calculation processing module 402, data analysis module
403 and warning module 404.
The data reception module 401 is used to receive the data information that the control module 30 is fed back, and will be described
Data information is sent to the calculation processing module 402.
The calculation processing module 402 calculates the photovoltaic module for carrying out calculation processing to the data information
Power generation in real time can valid value NkAnd the power generation efficiency average value N of every dayy avg；And it can valid value N by calculating power generation in real timekWith
And the power generation efficiency average value N of every dayy avgFeed back to the data analysis module 403；
The average value N of the power generation energy valid valuey avgFor example following algorithmic formulas (2) of calculation formula shown in:
The real-time power generation of the photovoltaic module can valid value NkCalculation formula are as follows: Nk=Ek/(AkVk), wherein the present embodiment
In, K=288, detection in every 5 minutes is once.
The data analysis module 403 receives the real-time power generation energy valid value NkAnd the power generation efficiency of every day is average
Value Ny avg；By the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes, it is full to record
The number of sufficient preset condition value, such as the number accounting for meeting preset condition value of record are more than the 5% of total degree, then trigger transmission
Alarm signal gives the warning module；
Specifically, in the present embodiment, the preset condition value are as follows: if power generation in real time can valid value NkIt is counted more than the previous day
The average value N of the power generation energy valid value of calculationy avg20% or more, then PC work station monitors and records such situation number, as follows
Number accounting is more than 5% (i.e. S of total degree2When=1) alarm signal is then sent to the warning module 404, timely system for prompting
Operation maintenance personnel is rushed towards scene and is overhauled；If number accounting is less than the 5% of total degree, then by the photovoltaic group of the real-time monitoring on the same day
Part power generation can valid value average value Nt avgIt is updated to second day reference value.It is specific as follows to state shown in formula (3).
Wherein, the meaning of each parameter is as follows in above-mentioned formula:
EkFor kth time sampler chamber external irradiation degree；
AkFor kth time sampling photovoltaic module electric current；
VkFor kth time sampling photovoltaic component voltage；
PkThe photovoltaic module power calculated for kth time sampling；
A, V, P are respectively the electric current theoretical value, voltage theoretical value, Power Theory value of photovoltaic module；
Ny avgThe average value of photovoltaic module power generation energy valid value is calculated for the previous day；
Nt avgThe average value of photovoltaic module power generation energy valid value was calculated for the same day；
NkFor the real-time power generation energy valid value for the photovoltaic module that same day kth time sampling calculates；
S1, S2In numerical value 1 respectively correspond the alarm state of photovoltaic module.
Warning module 404, for according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avg's
Comparing result, it is determined whether triggering early warning.
Specifically, if power generation in real time can valid value NkMore than the average value N for the power generation energy valid value that the previous day calculatesy avg's
20% or more, then PC work station monitors and records such situation number, if number accounting is more than 5% (i.e. S of total degree2=1
When) alarm is then triggered, and timely system for prompting operation maintenance personnel is rushed towards scene and is overhauled.
In the embodiment of the present application, each sensor has corresponding MAC Address, and the corresponding MAC of each sensor
Address is stored in PC work station, and the photovoltaic module of the corresponding monitoring of each sensor has corresponding number, therefore is monitoring
When breaking down alarm to photovoltaic module, corresponding appearance event can be found in PC work station by the MAC Address of respective sensor
The number of the photovoltaic module of barrier, dimension inspection personnel can quickly find the event for needing to tie up inspection according to the number of the photovoltaic module
The specific location of the photovoltaic module of barrier, and it is overhauled, compare efficient quick.
The application is by the data information of the acquisition photovoltaic module 10 in real time of the data acquisition module 20, and by data information
Feed back to control module 30, control module 30 carries out pair according to the data information of the acquisition and the presupposition theory value of photovoltaic module
Than analysis, to control whether alert；And the data information is fed back to PC work station simultaneously, PC work station will be described
Data information is handled and is analyzed, and calculating power generation can valid value；And it can valid value N by the real-time power generation of photovoltaic modulekWith it is preceding
The average value N of one day power generation energy valid valuey avgIt analyses and compares, to decide whether triggering alarm with system for prompting O&M people
Member rushes towards scene and carries out daily maintenance to photovoltaic module, so can detect event automatically by herein described fault diagnosis system
Hinder photovoltaic module, improves the satisfaction of user, and maintenance personnel can also find what needs were safeguarded according to monitoring situation faster
The specific location of photovoltaic module, maintenance efficiency is high, reduces maintenance cost.
Referring to Fig. 2, the present patent application also provides a kind of photovoltaic module method for diagnosing faults, following step is specifically included
It is rapid:
S1, photovoltaic module are collected solar energy, and are converted solar energy into electrical energy；
S2, data acquisition module acquire the data information of photovoltaic module in real time, and the data information of acquisition is sent
To control module；
Specifically, the data information includes: irradiation level information, current information, information of voltage；Data acquisition module 20 is real
When the acquisition irradiation level information of photovoltaic module 10, current information, information of voltage, and the data information of acquisition is sent to control mould
Block；
S3, control module compare and analyze the data information acquired in real time with preset theoretical value, with control
Whether alert；
Specifically, control module 30 acquires the acquisition module 20 irradiation level information, current information, information of voltage with
Irradiation level theoretical value, electric current theoretical value, the voltage theoretical value of preset photovoltaic module compare and analyze, to judge whether to send out
Warning message out.If irradiation level information, current information, information of voltage any one information are more than theoretical value and the accumulative accounting of number
More than the 5% of total degree, then alert i.e. S is controlled1=1, and fed back simultaneously to PC work station, PC work station is further
It is analyzed to identify and reminds operation maintenance personnel to rush towards scene and overhauled in time；As without exception, monitoring state is gone successively to.
Algorithmic formula is as follows:
S4, PC work station receive the data information of the control module feedback, and according to data information calculating
Photovoltaic module generates electricity in real time can valid value NkWith the power generation efficiency average value N of every dayy avg, and will generate electricity in real time can valid value Nk
With the power generation efficiency average value N of the previous dayy avgIt analyses and compares, to determine whether to trigger early warning, system for prompting operation maintenance personnel
The scene of rushing towards is checked and is repaired.
Referring to Fig. 3, specifically including step:
S41. data reception module receives the data information of the control module feedback, and the data information is sent out
Give the calculation processing module；
S42. calculation processing module carries out calculation processing to the data information, calculates the real-time power generation of the photovoltaic module
It can valid value NkAnd the power generation efficiency average value N of every dayy avg；
The average value N of the power generation energy valid value calculated every dayy avgSpecific formula is as follows:
The calculation processing module 402 calculates the reality of the photovoltaic module according to the data information that the control module is fed back
When power generation energy valid value Nk, formula Nk=Ek/(AkVk), wherein K=288, detection in every 5 minutes are primary；NkTo generate electricity in real time
It can valid value；
EkFor kth time sampler chamber external irradiation degree；
AkFor kth time sampling photovoltaic module electric current；
VkFor kth time sampling photovoltaic component voltage.
S43. the real-time power generation that data analysis module 403 receives the calculating can valid value NkAnd the power generation efficiency of every day
Average value Ny avg；By the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes.
Specifically, data analysis module is by the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avg
It compares and analyzes, as the calculated real-time power generation energy valid value N of calculation processing modulekPower generation more than the previous day can valid value
Average value Ny avg20% or more, then PC work station monitors and records such situation number, as number accounting be more than total degree
5% (i.e. S2When=1), then control the i.e. S of triggering alarm2=1；If number accounting is less than the 5% of total degree, then by the reality on the same day
When the photovoltaic module power generation that monitors can valid value average value Nt avgIt is updated to second day reference value.
Algorithm is as follows:
S44. according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgComparing result, really
It is fixed whether to trigger early warning, go to scene to be overhauled with system for prompting operation maintenance personnel.
Specifically, according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgComparing result,
Determine whether to trigger early warning, system for prompting operation maintenance personnel is overhauled after warning module 404 receives the alarm signal, system fortune
Dimension personnel, which find, is pre-stored in the corresponding MAC Address of each sensor in PC work station, and it is corresponding to find photovoltaic module according to MAC Address
Number, so that early warning personnel can rush towards scene according to the number of the failure photovoltaic module, be quickly found out abort situation into
Row maintenance.
Repeat the above steps S1-S4.
Photovoltaic module method for diagnosing faults described in the embodiment of the present invention acquires photovoltaic group by data acquisition module in real time
The data information of part, and by the data information transfer of acquisition to control module 30, control module 30 is according to the data acquisition module
The data information that block 20 acquires is compared and analyzed with preset theoretical value, and feeds back the data letter to PC work station simultaneously
Breath, the calculation processing module 402 of PC work station calculate the power generation energy of real-time power generation the energy valid value and the previous day of photovoltaic module
Valid value, data analysis module 403 are flat by the power generation energy valid value of real-time generate electricity energy valid value and the previous day of the photovoltaic module
Mean value is analysed and compared, and warning module decides whether triggering alarm according to comparing result, thus system for prompting O&M people
Member rush towards scene to photovoltaic module carry out daily maintenance, so by herein described fault diagnosis system can be reduced safeguard at
This, improves the satisfaction of user, and maintenance efficiency is high.
The Position Number of the out of order photovoltaic module of fault diagnosis system energy quick search described herein simultaneously mentions in time
Awake operation maintenance personnel is rushed towards scene and is overhauled, therefore can be reduced the maintenance of photovoltaic module by herein described fault diagnosis system
Cost, malfunction elimination is high-efficient, and maintenance personnel can find what needs were safeguarded according to the monitoring situation of PC work station faster
The position of failure photovoltaic module, maintenance efficiency are high.
Although the present application is disclosed as above with preferred embodiment, it is not for limiting the application, any ability
Field technique personnel are not departing from spirit and scope, can make possible variation and modification, therefore the application
Protection scope should be subject to the range that the claim of this application defined.
Claims (11)
1. a kind of photovoltaic module fault diagnosis system characterized by comprising
Photovoltaic module for collecting solar energy, and converts solar energy into electrical energy；
Data acquisition module, for acquiring the data information of the photovoltaic module, the data information includes irradiation level information, electricity
Stream information and information of voltage, and by the data information transfer of acquisition to control module；
Control module, receives the data information of the data collecting module collected, and by the data information of the acquisition with
Preset theoretical value compares and analyzes；And
PC work station, the PC work station further comprises: including calculation processing module, data analysis module and warning module；
The calculation processing module, for carrying out calculation processing to the data information, according to the irradiation level of the photovoltaic module
The real-time power generation that information, current information and information of voltage calculate the photovoltaic module can valid value NkAnd the power generation efficiency of every day
Average value Ny avg；
The data analysis module, for receiving the real-time power generation energy valid value NkAnd the power generation efficiency average value of every day
Ny avg；By the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes；
The warning module, for according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgPair
Compare result, it is determined whether triggering early warning.
2. photovoltaic module fault diagnosis system according to claim 1, which is characterized in that the data analysis module is by institute
Stating power generation in real time can valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes and specifically includes: such as power generation in real time
It can valid value NkMore than the power generation efficiency average value N of the previous dayy avg20%, then monitor and record such situation number, as record
Number accounting is more than the 5% of comparison total degree, then triggers alarm.
3. photovoltaic module fault diagnosis system according to claim 1 or 2, which is characterized in that the data acquisition module
Including irradiance sensor, current sensor and voltage sensor, the irradiance sensor is for outside real-time monitoring room
The irradiation level information Ek, the current sensor is for incuding the current information A of photovoltaic modulek, the voltage sensor
For incuding the information of voltage V of photovoltaic modulek。
4. photovoltaic module fault diagnosis system according to claim 3, which is characterized in that the calculation processing module calculates
The real-time power generation of the photovoltaic module can valid value NkFormula are as follows: Nk=Ek/(AkVk), wherein K is adopting for data acquisition module
Collect number, K is 1~1440 minute/acquisition interval time.
5. photovoltaic module fault diagnosis system according to claim 3, which is characterized in that
It includes: to work as to include that the control module, which compares and analyzes the data information acquired in real time with preset theoretical value,
Irradiation level information, current information, any one information in information of voltage are more than the preset theoretical value and number is accumulative accounts for
Than be more than total degree 5%, then alert is controlled.
6. photovoltaic module fault diagnosis system according to claim 1, which is characterized in that the PC work station further includes number
According to receiving module, the data reception module is used to receive the data information of control module feedback, and by the number
It is believed that breath is sent to the calculation processing module.
7. a kind of photovoltaic module method for diagnosing faults, which is characterized in that comprising steps of
Data acquisition module acquires the data information of photovoltaic module in real time, and the data information includes: irradiation level information, electric current letter
Breath and information of voltage, and the data information of acquisition is sent to control module；
Control module receives the data information of the data collecting module collected, and by the data information of the acquisition and in advance
If theoretical value compare and analyze；
Calculation processing module carries out calculation processing to the data information, and the real-time power generation for calculating the photovoltaic module can valid value Nk
And the power generation efficiency average value N of every dayy avg；
The real-time power generation that data analysis module receives the calculating can valid value NkAnd the power generation efficiency average value N of every dayy avg；
And by the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes；
Warning module is used for according to the real-time power generation energy valid value NkWith the power generation efficiency average value N of the previous dayy avgComparison knot
Fruit, it is determined whether triggering early warning.
8. photovoltaic module method for diagnosing faults according to claim 7, which is characterized in that data analysis module is by the reality
Shi Fa electricity can valid value NkWith the power generation efficiency average value N of the previous dayy avgIt compares and analyzes and specifically includes: if generating electricity efficiency in real time
Value NkMore than the power generation efficiency average value N of the previous dayy avg20%, then monitor and record such situation number, if record number
Accounting is more than the 5% of comparison total degree, then triggers alarm.
9. photovoltaic module method for diagnosing faults according to claim 7, which is characterized in that further comprise counting the previous day
The average value N of the power generation energy valid value of calculationy avgAs reference value, specifically: if record power generation in real time can valid value NkMore than the previous day
Generate electricity efficiency average value Ny avg20% number accounting be less than total degree 5%, then by the same day monitoring photovoltaic module hair
Electric energy valid value average value Nt avgUpdate the reference value of the power generation energy valid value as second day.
10. photovoltaic module method for diagnosing faults according to claim 7, which is characterized in that the calculation processing module root
It can valid value N according to the real-time power generation that the data information that the control module is fed back calculates the photovoltaic modulek, using algorithm are as follows: Nk
=Ek/(AkVk)；Wherein K is times of collection, and K is 1~1440 minute/acquisition interval time；NkIt can valid value to generate electricity in real time；
EkFor kth time sampler chamber external irradiation degree；
AkFor kth time sampling photovoltaic module electric current；
VkFor kth time sampling photovoltaic component voltage.
11. according to the described in any item photovoltaic module method for diagnosing faults of claim 7~10, which is characterized in that the control
If module the data information acquired in real time and preset theoretical value are compared and analyzed include: including irradiation level information,
Any one information in current information, information of voltage is more than its theoretical value and number adds up accounting is more than total degree 5%, then
Control alert.
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| CN116131755A (en) * | 2023-02-23 | 2023-05-16 | 呼和浩特市语能科技有限责任公司 | Intelligent control system and method for solar power generation equipment |
| CN116131755B (en) * | 2023-02-23 | 2024-04-26 | 青岛中筑新能源有限公司 | Intelligent control system and method for solar power generation equipment |
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