CN107482672A - A kind of distributed photovoltaic component optimization method and device based on tuning algorithm - Google Patents
A kind of distributed photovoltaic component optimization method and device based on tuning algorithm Download PDFInfo
- Publication number
- CN107482672A CN107482672A CN201710597558.6A CN201710597558A CN107482672A CN 107482672 A CN107482672 A CN 107482672A CN 201710597558 A CN201710597558 A CN 201710597558A CN 107482672 A CN107482672 A CN 107482672A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- module
- cell string
- output
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005457 optimization Methods 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 claims description 44
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H02J3/383—
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
-
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of distributed photovoltaic component optimization method and device based on tuning algorithm, for optimizing the optimum Working of multiple solar cell series-parallel circuits, each solar cell string is in series by multiple solar cell modules, by the output voltage and output current that monitor each solar cell module, the working condition of each solar cell module can effectively be known, when some battery components are covered by shade or failure causes power output to reduce, the method of the present invention can be by adjusting the output voltage and output current of each solar cell module in same solar cell string, reach the state for ensureing that solar cell series-parallel circuit is in high-efficiency operation all the time, reduce power attenuation rate.By this method, the high-efficiency operation of whole solar cell series-parallel circuit both can be effectively maintained, the running status of each solar cell module can be known again, abnormity point and trouble point are accurately positioned.
Description
Technical field
The present invention relates to photovoltaic industry, more particularly to a kind of distributed photovoltaic component optimization method based on tuning algorithm and
Device.
Background technology
As solar components product, photovoltaic DC-to-AC converter product reach its maturity, distributed photovoltaic power generation system is pacified with it
Dress simplicity, string and the good characteristic such as flexible, generating efficiency height, are increasingly esthetically acceptable to the consumers and favor.But with distributed light
The large-scale use of photovoltaic generating system, due to the panel shadow problem that the installation environment factors such as building body structure, periphery object are brought,
Cause the situation of decrease of power generation, it is more and more；Damage solar components cause the event of fire, also happen occasionally.
To solve the two large problems of above-mentioned distributed photovoltaic power generation system, currently used measure has two.One is being gone here and there simultaneously
A kind of MPPT maximum power point tracking (MaximumPowerPointTracking, abbreviation MPPT) controller is connected after component, then is entered
Row DC inversion exchanges, the controller can progressively adjust equivalent load value make string and module matrix to be maintained at maximum power point defeated
Go out, improve generating efficiency；Secondly the bypass protection diode in parallel on component, makes indivedual abnormal components in matrix neither influence it
His component generates electricity and can protect this assembled devices again, reduces the probability of happening that component triggers event of fire.
However, it is found by the inventors that following weak point in prior art measure at least be present：In the prior art all groups
Part string and connection form matrix and then the overall maximum for carrying out MPPT maximum power point trackings, can not playing component
Electricity generation efficiency；Do not accomplish to monitor working condition, output voltage and the output current of each component in real time, abnormal group can not be positioned
Part.
In summary, existing distributed photovoltaic component electricity generation system component become more meticulous management and control, further improve generate electricity
Shortcomings and defect are gone back in efficiency.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of distributed photovoltaic component based on tuning algorithm is excellent
Change method and device.
To reach above-mentioned purpose, the technical scheme is that：
A kind of distributed photovoltaic component optimization method based on tuning algorithm, for optimizing multiple solar cell connection in series-parallel
The optimum Working of circuit, each solar cell string are in series by multiple solar cell modules, comprised the following steps：
The first step, data acquisition, output voltage, the output current data of each solar cell module are gathered by the cycle,
And obtain the average output power number of each solar cell module and/or each solar cell string within the sampling period
According to；
Second step, loss calculation, by each solar cell module in the sampling period and/or each solar cell string
Average output power data and each solar cell module and/or each solar cell string rated output power it
Difference, divided by the rated output power of each solar cell module and/or each solar cell string, obtain each sampling period
Interior average power consumption rate；Or, each solar cell module in the sampling period and/or each solar cell string is flat
The difference of equal power output data and the same period average output power of all solar cell modules or solar cell string, Chu Yisuo
There is the same period average output power of solar cell module or solar cell string, obtain the mean power in each sampling period
The proportion of goods damageds；Or, each solar cell module and/or the average output power number of each solar cell string in the sampling period
According to flat with the maximum in the same period power output of all solar cell modules or solar cell string or multiple higher values
Maximum in the difference of average, divided by the same period power output of all solar cell modules or solar cell string or it is multiple compared with
The average value being worth greatly, obtain the average power consumption rate in each sampling period；
3rd step, loss ratio is compared with when some solar cell module and/or being averaged in the solar cell string sampling period
When power attenuation rate is more than normal value, adjust instruction is sent；
4th step, the shunt voltage of adjustment processing, first maintenance solar cell string, using each solar cell string to be single
Position, power attenuation is reduced by adjusting output voltage and the output current of each solar cell module in solar cell string
Rate.
First, it is known that the rated output power of each solar cell module is certain, therefore, in the volume
Determine in the range of magnitude of power, stable power output can be obtained by adjusting output voltage and output current simultaneously.Pass through
The output voltage and output current of each solar cell module are monitored, can effectively know each solar battery group
The working condition of part, when some battery components are covered by shade or failure causes power output to reduce, method of the invention can
With the output voltage and output current by adjusting each solar cell module in same solar cell string, reach guarantor
The state that solar cell series-parallel circuit is in high-efficiency operation all the time is demonstrate,proved, reduces power attenuation rate.By this method, both may be used
Effectively to maintain the high-efficiency operation of whole solar cell series-parallel circuit, each solar cell module can be known again
Running status, abnormity point and trouble point are accurately positioned.
Further, when power attenuation value can not be reduced to setting range by the 4th step, then the 5th step is carried out, is changed first
Become the shunt voltage of all solar cell strings to a new same numerical value, in units of each solar cell string, pass through
The output current of each solar cell module in adjustment solar cell string reduces power attenuation rate.
Further, the 5th step is specifically, to reduce the shunt voltages of all solar cell strings first new same to one
One numerical value, in units of each solar cell string, by lifting the defeated of each solar cell module in solar cell string
Go out electric current to reduce power attenuation rate.
Further, the first step is repeated in new collection period to the 5th step, until the power consumption proportion of goods damageds are reduced to setting
In the range of, stop adjustment.
Further, in the first step, when detect some, the output voltages of two or more solar cell modules
When fall is more than other most solar cell modules in same solar cell string, in the 4th step, pass through lifting
The output current of the big solar cell module of corresponding output voltage fall, while lift other most solar battery groups
The output voltage of part and the output current for reducing corresponding solar cell module, to reach the parallel connection for maintaining the solar cell string
Voltage, and reduce the purpose of power attenuation rate.
The present invention also provides a kind of distributed photovoltaic component optimization device based on tuning algorithm, for optimizing multiple sun
The optimum Working of energy battery series-parallel connection circuit, each solar cell string are in series by multiple solar cell modules,
Including with lower module：
Data acquisition module, for gathering output voltage, the output current data of each solar cell module by the cycle,
And obtain the average output power number of each solar cell module and/or each solar cell string within the sampling period
According to；
Loss calculation module, for receiving the data from data acquisition module, calculate average power consumption rate, i.e., it is each
Average output power data in sampling period and each solar cell module and/or each solar cell string it is specified defeated
Go out the difference of power, divided by the rated output power of each solar cell module and/or each solar cell string, obtain each
Average power consumption rate in sampling period；
Comparison module is lost, for the average power consumption rate in each sampling period to be compared with default numerical value
Compared with when the average power consumption rate in each sampling period is more than preset value, sending adjust instruction；
Processing module is adjusted, when being connected to adjust instruction, the shunt voltage of solar cell string is first maintained, with each sun
Can battery strings be unit, by adjust output voltage and the output current of each solar cell module in solar cell string come
Reduce power attenuation rate.
Further, the adjustment processing module includes pressure regulation tune stream adjusting module, for setting all solar cells
The shunt voltage of string is to a new same numerical value, and in units of each solar cell string, by adjusting solar cell
The output current of each solar cell module in string reduces power attenuation rate.
Further, the pressure regulation adjusts flow module as decompression up-flow adjusting module, for reducing all solar-electricities first
The shunt voltage of pond string is to a new same numerical value, in units of each solar cell string, by lifting solar cell
The output current of each solar cell module in string reduces power attenuation rate.
Further, in addition to study module, study module are used to control the distributed photovoltaic component based on tuning algorithm
Optimize device and carry out periodically adjustment operation, in the range of the power consumption proportion of goods damageds are reduced to setting, stop adjustment.
Further, it is described adjustment processing module be used for adjust respectively each solar cell module output voltage and
Output current.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the present invention.
Fig. 2 is a kind of schematic flow sheet of example of the present invention.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of distributed photovoltaic component optimization method based on tuning algorithm, for optimizing multiple solar energy
The optimum Working of battery series-parallel connection circuit, each solar cell string are in series by multiple solar cell modules, bag
Include following steps：
The first step, data acquisition, output voltage, the output current data of each solar cell module are gathered by the cycle,
And obtain the average output power number of each solar cell module and/or each solar cell string within the sampling period
According to；
Second step, loss calculation, by each solar cell module in the sampling period and/or each solar cell string
Average output power data and each solar cell module and/or each solar cell string rated output power it
Difference, divided by the rated output power of each solar cell module and/or each solar cell string, obtain each sampling period
Interior average power consumption rate；Or, each solar cell module in the sampling period and/or each solar cell string is flat
The difference of equal power output data and the same period average output power of all solar cell modules or solar cell string, Chu Yisuo
There is the same period average output power of solar cell module or solar cell string, obtain the mean power in each sampling period
The proportion of goods damageds；Or, each solar cell module and/or the average output power number of each solar cell string in the sampling period
According to flat with the maximum in the same period power output of all solar cell modules or solar cell string or multiple higher values
Maximum in the difference of average, divided by the same period power output of all solar cell modules or solar cell string or it is multiple compared with
The average value being worth greatly, obtain the average power consumption rate in each sampling period；When using rated output power as benchmark,
Due to the continuous change of sunlight intensity, the rated output power that reach optimal is highly difficult, and this can cause whole device
Ceaselessly go to adjust so that system effectiveness is too low.Therefore all solar cell modules of same period or the sun can be used
Can the average output powers of battery strings be used as benchmark, be so easily adjusted in place, regulated efficiency height, but due to being average value,
Hence in so that the efficiency of whole system does not reach optimum state.Therefore can use with all solar-electricities in same period
Power output peak or the average value of multiple power outputs being arranged in front are (to advise in pond component or solar cell string
Keep away because the extraordinary height of the power output of indivedual solar cell modules or solar cell string caused by cause specific) it is used as base
Standard, then it can further improve the generating efficiency of whole solar energy parallel system.
3rd step, loss ratio is compared with when some solar cell module and/or being averaged in the solar cell string sampling period
When power attenuation rate is more than normal value, adjust instruction is sent；Here normal value refers to, within the time cycle, equal illumination
Under the conditions of, the average power consumption rate in normal solar cell module and/or solar cell the string sampling period, because,
Generally, most of solar cell module and/or solar cell strings are in normal condition, therefore can pass through analysis
The data collected carry out analysis and draw an occurrence or an appropriate value range.
4th step, the shunt voltage of adjustment processing, first maintenance solar cell string, using each solar cell string to be single
Position, power attenuation is reduced by adjusting output voltage and the output current of each solar cell module in solar cell string
Rate.
First, it is known that the rated output power of each solar cell module is certain, therefore, in the volume
Determine in the range of magnitude of power, stable power output can be obtained by adjusting output voltage and output current simultaneously.Pass through
The output voltage and output current of each solar cell module are monitored, can effectively know each solar battery group
The working condition of part, when some battery components are covered by shade or failure causes power output to reduce, method of the invention can
With the output voltage and output current by adjusting each solar cell module in same solar cell string, reach guarantor
The state that solar cell series-parallel circuit is in high-efficiency operation all the time is demonstrate,proved, reduces power attenuation rate.By this method, both may be used
Effectively to maintain the high-efficiency operation of whole solar cell series-parallel circuit, each solar cell module can be known again
Running status, abnormity point and trouble point are accurately positioned.
On power attenuation rate, the reality for setting single solar cell module or whole solar cell string entirety is defeated
Go out the rated output power P1 of power P 2, single solar cell module or whole solar cell string entirety, power attenuation
Rate=(P1-P2)/P1x100%.Because the change of real-time sunlight intensity, and the influence of veil shade, P2 are located all the time
Under the current intelligence of a change.But within some period, power attenuation rate can be stablized rational horizontal at one
It is interior, or on a rational change curve.
Specifically, when some solar cell module by shade masking or failure cause due to causing output voltage to decline
Afterwards, the output voltage of the solar cell string where it can also reduce, and cause power attenuation rate to raise extremely, in order to by power
The proportion of goods damageds are reduced to normal or setting level, can take and lift the electric current of the abnormal solar cell module to remain whole
The power output of body is constant, and the function proportion of goods damageds that will have become big reduce back normal level, but now whole solar cell
The output voltage of string can decline, and less than the shunt voltage of whole parallel system, therefore the present invention is using this solar cell of lifting
The output voltage of other some or all solar cell modules in string, while the method for reducing its output current, will
The output voltage of whole solar cell module maintains to arrive the state consistent with the output voltage of other solar cell strings.Adjustment
Standard be to keep whole solar cell power generation system to be in optimal running status (at that time specific as far as possible
Under external condition).
Further, when power attenuation value can not be reduced to setting range by the 4th step, then the 5th step is carried out, is changed first
Become the shunt voltage of all solar cell strings to a new same numerical value, in units of each solar cell string, pass through
The output current of each solar cell module in adjustment solar cell string reduces power attenuation rate.
Sometimes, can in the case of individually adjusting the correlation values of some solar cell string and be also unable to reach target
To adjust the shunt voltage of whole parallel system, certainly, it is necessary to while adjust the part in each solar cell string
Or the output voltage and output current of whole each solar cell modules.
For example, when the output voltage of a certain bar solar cell string can not be adjusted to shunt voltage, can reduce first
The shunt voltage of all solar cell strings is to a new same numerical value, and this new numerical value is it is of course possible to being the abnormal sun
The maximum output voltage value or some suitable numerical value less than the output voltage values that energy battery strings can reach,
In units of each solar cell string, by the output current for lifting each solar cell module in each solar cell string
To reduce power attenuation rate.
Further, the first step is repeated in new collection period to the 5th step, until the power consumption proportion of goods damageds are reduced to setting
In the range of, stop adjustment.So, whole method of adjustment automatically can constantly seek optimal parameter combination, and can be certainly
The operation of dynamic stability.
For example, when detect some, the output voltage falls of two or more solar cell modules be more than it is same
During other most solar cell modules in one solar cell string, in the 4th step, by being lifted under corresponding output voltage
The output current of the big solar cell module of range of decrease degree, at the same lifted other most solar cell modules output voltage and
The output current of corresponding solar cell module is reduced, to reach the shunt voltage for maintaining the solar cell string, and reduces work(
The purpose of the rate proportion of goods damageds.
The above method is realized in order to coordinate, the present invention also provides a kind of distributed photovoltaic component optimization based on tuning algorithm
Device, for optimizing the optimum Working of multiple solar cell series-parallel circuits, each solar cell string by it is multiple too
Positive energy battery component is in series, including with lower module：
Data acquisition module, for gathering output voltage, the output current data of each solar cell module by the cycle,
And obtain the average output power number of each solar cell module and/or each solar cell string within the sampling period
According to；
Loss calculation module, by each solar cell module in the sampling period and/or each solar cell string
The difference of the rated output power of average output power data and each solar cell module and/or each solar cell string,
Divided by the rated output power of each solar cell module and/or each solar cell string, obtain in each sampling period
Average power consumption rate；Or, each solar cell module in the sampling period and/or each solar cell string are averaged
The difference of the same period average output power of power output data and all solar cell modules or solar cell string, divided by it is all
The same period average output power of solar cell module or solar cell string, obtain the mean power damage in each sampling period
Consumption rate；Or, each solar cell module and/or the average output power data of each solar cell string in the sampling period
And the difference of the maximum in the same period power output of all solar cell modules or solar cell string, divided by all solar energy
Maximum in the same period power output of battery component or solar cell string, obtain the mean power damage in each sampling period
Consumption rate；When using rated output power as benchmark, due to the continuous change of sunlight intensity, to reach optimal specified defeated
It is highly difficult to go out power, and this can cause whole device ceaselessly to go to adjust so that system effectiveness is too low.Therefore can use same
The average output power of one period all solar cell modules or solar cell string is so easily adjusted as benchmark
Position, regulated efficiency is high, but due to being average value, hence in so that the efficiency of whole system does not reach optimum state.Therefore
It can use with power output peak or multiple in all solar cell modules in same period or solar cell string
The average value for the power output being arranged in front is (to evade because indivedual solar cell modules or the sun caused by cause specific
Can battery strings the extraordinary height of power output) be used as benchmark, then can further improve the generating of whole solar energy parallel system
Efficiency.
Comparison module is lost, when some solar cell module and/or the average work(in the solar cell string sampling period
When the rate proportion of goods damageds are more than normal value, adjust instruction is sent；Here normal value refers to, within the time cycle, equal illumination bar
Under part, the average power consumption rate in normal solar cell module and/or solar cell the string sampling period, because, one
As in the case of, most of solar cell module and/or solar cell strings are in normal condition, therefore can be adopted by analysis
The data collected carry out analysis and draw an occurrence or an appropriate value range.
Processing module is adjusted, when being connected to adjust instruction, the shunt voltage of solar cell string is first maintained, with each sun
Can battery strings be unit, by adjust output voltage and the output current of each solar cell module in solar cell string come
Reduce power attenuation rate.
Further, the adjustment processing module includes pressure regulation tune stream adjusting module, for setting all solar cells
The shunt voltage of string is to a new same numerical value, and in units of each solar cell string, by adjusting solar cell
The output current of each solar cell module in string reduces power attenuation rate.
Further, the pressure regulation adjusts flow module as decompression up-flow adjusting module, for reducing all solar-electricities first
The shunt voltage of pond string is to a new same numerical value, in units of each solar cell string, by lifting solar cell
The output current of each solar cell module in string reduces power attenuation rate.
Further, in addition to study module, study module are used to control the distributed photovoltaic component based on tuning algorithm
Optimize device and carry out periodically adjustment operation, in the range of the power consumption proportion of goods damageds are reduced to setting, stop adjustment.System can
It is adjusted so that various parameters combination is repeated, such as how the output voltage of each solar cell module and output current are adjusted
It is whole, any numerical value is adjusted to, is that a part of solar cell module is adjusted, or whole solar components are adjusted
The operational factor and power attenuation rate result after adjustment each time can be recorded Deng, study module, and by optimal adjustment mode
Top set, if subsequently having more excellent adjustable strategies, by the tactful top set.Therefore it is excellent in the case of being similar afterwards
Optimal parameter combination is first called, reaches the purpose being quickly adjusted optimally.And the micro- of small range is carried out on this basis
Adjust, to find more adjustable strategies, can so reduce the system call interception time.
Operation principle and advantage are consistent with preceding method.
In practical application, the adjustment processing module is used for the output voltage for adjusting each solar cell module respectively
And output current.The output voltage and output current that adjust each solar cell module respectively that can be independent, can be more preferable
Realize preceding method.Based on this, each solar cell module can be directed to one optimal control box, each optimization are installed
Control box can possess above-mentioned all modules, data acquisition module and adjustment processing module can also be only included, as other moulds
Block can be handled using a central controller.
In actual applications, as shown in Fig. 2 completing related work using optimization box (i.e. optimal control box) and MPPT simultaneously
Make, collect all optimization box data and MPPT input datas first, then calculate and judge whether overall losses rate becomes big, if
It is no, remain on, and constantly rescaned by the cycle, if it is, voltage method is first used, by adjusting in processing module
Pwm control circuit pulse duty factor, it is (specific to adjust the output voltage of corresponding solar cell module and output current
See foregoing abnormal battery component up-flow, the method explanation of other battery components boosting drop stream), reach maintenance group connection in series-parallel voltage not
The purpose of change.After the above method, determine whether under pressure-increasning state, the power attenuation rate of whole solar cell string is
It is no to be reduced to zone of reasonableness, if it is, keeping the operational factor to continue to run with, and continue to scan according to the cycle.Such as
Fruit is not to continue to boost, and when the upper limit for reaching boosting, (output voltage and circuit of each solar cell module have
One limiting value), power attenuation rate is still very high, then lowers the shunt voltage of whole parallel system and (can preset multiple adjustment
Class), then in the output voltage and output current for attempting the solar cell module in each solar cell string of adjustment, seek
An optimal running status is obtained, i.e., power attenuation rate is dropped into rational scope.After shunt voltage is reduced, pass through adjustment
The dutycycle of pwm control circuit in optimization box corresponding to each solar cell module, foregoing purpose is completed to reach.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (10)
- A kind of 1. distributed photovoltaic component optimization method based on tuning algorithm, for optimizing multiple solar cell connection in series-parallel electricity The optimum Working on road, each solar cell string are in series by multiple solar cell modules, it is characterised in that including Following steps：The first step, data acquisition is gathered output voltage, the output current data of each solar cell module by the cycle, and is obtained Obtain the average output power data of each solar cell module and/or each solar cell string within the sampling period；Second step, loss calculation, by the flat of each solar cell module in the sampling period and/or each solar cell string The difference of equal power output data and the rated output power of each solar cell module and/or each solar cell string, is removed With each solar cell module and/or the rated output power of each solar cell string, obtain in each sampling period Average power consumption rate；Or, each solar cell module in the sampling period and/or each solar cell string is average defeated Go out the difference of the same period average output power of power data and all solar cell modules or solar cell string, divided by it is all too The same period average output power of positive energy battery component or solar cell string, obtains the average power consumption in each sampling period Rate；Or, each solar cell module in the sampling period and/or the average output power data of each solar cell string with The average value of maximum or multiple higher values in the same period power output of all solar cell module or solar cell strings Difference, divided by the maximum in the same period power output of all solar cell modules or solar cell string or multiple higher values Average value, obtain the average power consumption rate in each sampling period；3rd step, loss ratio is compared with when some solar cell module and/or the mean power in the solar cell string sampling period When the proportion of goods damageds are more than normal value, adjust instruction is sent；4th step, adjustment processing, the shunt voltage of solar cell string is first maintained, in units of each solar cell string, is led to The output voltage for adjusting each solar cell module in solar cell string and output current are crossed to reduce power attenuation rate.
- 2. the distributed photovoltaic component optimization method according to claim 1 based on tuning algorithm, it is characterised in that when When power attenuation value can not be reduced to setting range by four steps, then the 5th step is carried out, changes all solar cell strings first Shunt voltage is to a new same numerical value, in units of each solar cell string, by adjusting in solar cell string The output current of each solar cell module reduces power attenuation rate.
- 3. the distributed photovoltaic component optimization method according to claim 2 based on tuning algorithm, it is characterised in that the 5th Step specifically, reduce the shunt voltages of all solar cell strings to a new same numerical value, with each solar-electricity first Pond string is unit, and power attenuation is reduced by lifting the output current of each solar cell module in solar cell string Rate.
- 4. the distributed photovoltaic component optimization method based on tuning algorithm according to Claims 2 or 3, it is characterised in that The first step is repeated in new collection period to the 5th step, in the range of the power consumption proportion of goods damageds are reduced to setting, stops adjustment.
- 5. the distributed photovoltaic component optimization method according to claim 2 based on tuning algorithm, it is characterised in that In one step, when detect some, the output voltage falls of two or more solar cell modules be more than the same sun Can be in battery strings other most solar cell modules when, in the 4th step, pass through and lift corresponding output voltage fall The output current of big solar cell module, while lift output voltage and the reduction pair of other most solar cell modules The output current of solar cell module is answered, to reach the shunt voltage for maintaining the solar cell string, and reduces power attenuation The purpose of rate.
- A kind of 6. distributed photovoltaic component optimization device based on tuning algorithm, for optimizing multiple solar cell connection in series-parallel electricity The optimum Working on road, each solar cell string are in series by multiple solar cell modules, it is characterised in that including With lower module：Data acquisition module, for gathering output voltage, the output current data of each solar cell module by the cycle, and obtain Obtain the average output power data of each solar cell module and/or each solar cell string within the sampling period；Loss calculation module, for receiving the data from data acquisition module, average power consumption rate is calculated, i.e., each sampling Average output power data and each solar cell module and/or the rated output work(of each solar cell string in cycle The difference of rate, divided by the rated output power of each solar cell module and/or each solar cell string, obtain each sampling Average power consumption rate in cycle；Be lost comparison module, for by the average power consumption rate in each sampling period compared with default numerical value, when When average power consumption rate in each sampling period is more than preset value, adjust instruction is sent；Processing module is adjusted, when being connected to adjust instruction, the shunt voltage of solar cell string is first maintained, with each solar-electricity Pond string is unit, is reduced by adjusting output voltage and the output current of each solar cell module in solar cell string Power attenuation rate.
- 7. the distributed photovoltaic component optimization device according to claim 6 based on tuning algorithm, it is characterised in that described Adjust processing module and include pressure regulation and adjust stream adjusting module, it is new to one for setting the shunt voltages of all solar cell strings Same numerical value, and in units of each solar cell string, by adjusting each solar cell module in solar cell string Output current reduce power attenuation rate.
- 8. the distributed photovoltaic component optimization device according to claim 7 based on tuning algorithm, it is characterised in that described Flow module is adjusted in pressure regulation, and for decompression up-flow adjusting module, the shunt voltage for reducing all solar cell strings first is new to one Same numerical value, in units of each solar cell string, by lifting each solar cell module in solar cell string Output current reduce power attenuation rate.
- 9. the optimization device of the distributed photovoltaic component based on tuning algorithm according to claim 7 or 8, it is characterised in that Also include study module, study module is used to control the distributed photovoltaic component optimization device based on tuning algorithm to carry out periodically Adjustment operation, in the range of the power consumption proportion of goods damageds are reduced to setting, stop adjustment.
- 10. the distributed photovoltaic component optimization device according to claim 7 based on tuning algorithm, it is characterised in that institute State output voltage and output current that adjustment processing module is used to adjust each solar cell module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597558.6A CN107482672A (en) | 2017-07-20 | 2017-07-20 | A kind of distributed photovoltaic component optimization method and device based on tuning algorithm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597558.6A CN107482672A (en) | 2017-07-20 | 2017-07-20 | A kind of distributed photovoltaic component optimization method and device based on tuning algorithm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107482672A true CN107482672A (en) | 2017-12-15 |
Family
ID=60595095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710597558.6A Pending CN107482672A (en) | 2017-07-20 | 2017-07-20 | A kind of distributed photovoltaic component optimization method and device based on tuning algorithm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107482672A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202906790U (en) * | 2012-06-18 | 2013-04-24 | 广东旭粤新能源科技有限公司 | A photovoltaic power optimizer |
| CN103095180A (en) * | 2013-01-28 | 2013-05-08 | 西安交通大学 | Intelligent photovoltaic module and control method thereof and photovoltaic system based on intelligent photovoltaic module |
| CN105242740A (en) * | 2015-07-10 | 2016-01-13 | 福州大学 | Maximum power point tracking control method under partial shadow |
| CN205584121U (en) * | 2016-04-12 | 2016-09-14 | 常熟市福莱德连接器科技有限公司 | Voltage compensation method increase type photovoltaic conflux case |
| CN106787116A (en) * | 2017-02-22 | 2017-05-31 | 上海工程技术大学 | A kind of solar powered and energy management system |
-
2017
- 2017-07-20 CN CN201710597558.6A patent/CN107482672A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202906790U (en) * | 2012-06-18 | 2013-04-24 | 广东旭粤新能源科技有限公司 | A photovoltaic power optimizer |
| CN103095180A (en) * | 2013-01-28 | 2013-05-08 | 西安交通大学 | Intelligent photovoltaic module and control method thereof and photovoltaic system based on intelligent photovoltaic module |
| CN105242740A (en) * | 2015-07-10 | 2016-01-13 | 福州大学 | Maximum power point tracking control method under partial shadow |
| CN205584121U (en) * | 2016-04-12 | 2016-09-14 | 常熟市福莱德连接器科技有限公司 | Voltage compensation method increase type photovoltaic conflux case |
| CN106787116A (en) * | 2017-02-22 | 2017-05-31 | 上海工程技术大学 | A kind of solar powered and energy management system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2016202027B2 (en) | Automatic voltage regulation for photovoltaic systems | |
| CN103825548B (en) | efficient photovoltaic module and photovoltaic generating system | |
| CN203586455U (en) | Photovoltaic air conditioning system | |
| US10998723B1 (en) | Large-scale photovoltaic DC series boost grid-connected system with power balancer | |
| CN108258718B (en) | Inverter, distributed combiner box, power limiting control system and method | |
| CN104713176A (en) | Photovoltaic air conditioning system and control method thereof | |
| CN102624022A (en) | Photovoltaic grid-connected power generation system and direct current bus voltage control method thereof | |
| KR101408855B1 (en) | Micro convertor device using photovoltaic module and control method thereof | |
| WO2019075955A1 (en) | Coordination control method for input-parallel output-series direct current boost-based photovoltaic collection access system | |
| CN213279182U (en) | Photovoltaic power generation system with optimized voltage control | |
| US10720777B2 (en) | DC integration of battery for expanding the DC:AC ratio limit of a PV inverter | |
| CN114204588A (en) | Method for optimizing voltage control and photovoltaic power generation system | |
| CN105429462B (en) | The control system of the multi-functional grid-connection converter of a kind of twin-stage and method thereof | |
| CN110571842B (en) | New energy station electric energy quality regulation and control method, device and system | |
| CN104022520B (en) | A kind of reactive compensator of electrical network and method | |
| CN105207263B (en) | The photovoltaic generating system and grid-connected control method of garbage incinerating power plant | |
| CN107968433B (en) | Direct-current topological structure for improving utilization efficiency of photovoltaic inverter and control method | |
| CN102593217B (en) | Intelligent photovoltaic assembly capable of preventing hot spot | |
| CN107482672A (en) | A kind of distributed photovoltaic component optimization method and device based on tuning algorithm | |
| CN107560039A (en) | PV air-conditioner adapter and PV air-conditioner system | |
| CN204180008U (en) | A kind of photovoltaic plant based on block coupled in series structure | |
| CN104362717B (en) | A kind of battery charging system | |
| CN107565609B (en) | Distributed photovoltaic power generation active scheduling method and system | |
| CN105406513A (en) | Current-sharing control instruction current generation method in parallel operation of photovoltaic grid-connected inverter | |
| JP2019216547A (en) | Power control apparatus, photovoltaic power generation system, and failure diagnosing method of photovoltaic power generation facility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
|
| RJ01 | Rejection of invention patent application after publication |