CN103049035A - Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system - Google Patents
Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system Download PDFInfo
- Publication number
- CN103049035A CN103049035A CN201210558810XA CN201210558810A CN103049035A CN 103049035 A CN103049035 A CN 103049035A CN 201210558810X A CN201210558810X A CN 201210558810XA CN 201210558810 A CN201210558810 A CN 201210558810A CN 103049035 A CN103049035 A CN 103049035A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic
- photovoltaic module
- group
- array
- short
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention relates to a reconfiguration optimizing method of a photovoltaic cell array local reconfigurable electrical system, comprising the following steps: dividing a photovoltaic array into two blocks of a fixed structure part and a reconfigurable part, wherein after operating conditions are changed, the electrical connection of the reconfigurable part photovoltaic cell component of the photovoltaic array is changed, so that the output power of the photovoltaic array can be efficiently improved and the requirement of maximum power point tracking technology is reduced; and when the terminal voltage of serial connection components in the photovoltaic array has obvious difference or the timing of reconfigurable setting time is finished, starting the reconfiguration optimizing process, wherein the reconfiguration optimizing algorithm has the basic through that the sum of short circuit currents of each photovoltaic component serially connected in the photovoltaic array after reconfiguration is as equal as possible. According to the reconfiguration optimizing method, the mismatching power loss caused by mismatching of the output characteristics of the photovoltaic cell array component is efficiently reduced, and the power generating efficiency is relatively high.
Description
Technical field
The present invention relates to the photovoltaic power generation technology field, especially a kind of progress control method of photovoltaic battery array.
Background technology
Along with the exhaustion of traditional energy and the awakening of environmental consciousness, the development and use of sun power come into one's own day by day, and photovoltaic generation is the major way that utilizes sun power.Because output voltage and the electric current of single photovoltaic cell are all less, can't directly satisfy and be incorporated into the power networks or most of electricity consumption requirement with electric loading, so a plurality of photovoltaic cells need to be formed photovoltaic module by connection in series-parallel.Need in the photo-voltaic power generation station to form photovoltaic array with a large amount of photovoltaic modulies, thereby obtain required photovoltaic output voltage and power.In order to prevent that the hot spot phenomenon from occurring damaging photovoltaic cell, also be equiped with bypass diode and reaction diode in the photovoltaic array.When consistent and illumination is even when the photovoltaic module output characteristics, output power-the voltage of photovoltaic array (P-U) family curve presents unimodal phenomenon, and this moment, traditional MPPT maximum power point tracking (MPPT) method can be easy to trace into maximum power point (MPP).
Illumination condition is inhomogeneous when existing in the photovoltaic array, temperature difference, component characteristic are inconsistent etc. when affecting the factor of photovoltaic cell component output characteristics difference, the output P-U family curve of photovoltaic array very likely presents the multi-peak phenomenon, and this moment, the peak power output loss of photovoltaic array was usually obvious greater than the photovoltaic module power loss sum that causes because of external environmental factors such as illumination, temperature.This is to run on MPP because photovoltaic array runs on each photovoltaic cell component that MPP is not equal to its inside, wherein has larger mismatch power loss.
Improving the MPPT method obviously is helpless for reducing the mismatch power loss, and reducing or eliminate the mismatch power loss must be from the connecting structure for electrical equipment set off in search solution of photovoltaic array.There is the scholar to propose to be reconstructed to eliminate the mismatch power loss by the connecting structure for electrical equipment to photovoltaic array, helpless reconfiguration system structure is too numerous and diverse, reconstruction and optimization algorithm computation complexity is excessive, so the photovoltaic array reconfiguration technique still rests on theoretical research stage at present.Guaranteeing under the prerequisite of regulating power, simplifying the structure of photovoltaic array reconfiguration system, and setting up the reconstruction and optimization strategy of corresponding low computation complexity, for improving the photovoltaic array generating efficiency, it is significant to reduce power loss.
Summary of the invention
For overcome existing photovoltaic battery array owing to the photovoltaic cell component output characteristics is not mated the lower deficiency of mismatch power loss, generating efficiency of introducing, the invention provides the higher photovoltaic battery array local reconfigurable electrical system of mismatch power loss, the generating efficiency introduced is not mated in a kind of effective minimizing owing to the photovoltaic cell component output characteristics reconstruction and optimization method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of reconstruction and optimization method of photovoltaic battery array local reconfigurable electrical system, described photovoltaic battery array comprise by fixed sturcture part and partly forming with restructural,
The photovoltaic array of described fixed sturcture part comprises the photovoltaic module group that the M group is being connected, any several photovoltaic modulies of two end interfaces of every group of photovoltaic module group restructural part in parallel; Described restructural partly comprises N piece photovoltaic module, and N piece photovoltaic module will be divided on the external interface of the M group photovoltaic module group that is parallel to respectively corresponding with it fixed sturcture after M organizes;
Each photovoltaic module is in series with a reaction diode, connect first a bypass diode in parallel and voltage transformer (VT) behind the current transformer of every group of parallel photovoltaic assembly group in the photovoltaic array of fixed sturcture part, current transformer of each photovoltaic module series connection in the photovoltaic array of restructural part;
In the photovoltaic array operational process, for the photovoltaic module in the restructural part photovoltaic array, by the terminal voltage of real-time measurement photovoltaic module and the electric current that flows through, estimate fast the short-circuit current I of each photovoltaic module according to the mathematical model of photovoltaic module
Sci, i=1,2,3 ..., N; For the photovoltaic module in the fixed sturcture part photovoltaic array, by terminal voltage and the total current of every group of parallel photovoltaic assembly of real-time measurement group, estimate fast the synthetic short-circuit current I of every group of photovoltaic module group according to the equivalent model of parallel photovoltaic assembly group
Scj, j=1,2,3 ..., M;
Described reconstruction and optimization method may further comprise the steps:
(1) gathers the voltage and current signal; When reconstruction and optimization start-up times to or the terminal voltage of series connection photovoltaic module group between when occurring exceeding preset difference value, start the photovoltaic array reconstruction and optimization;
(2) according to the terminal voltage of fixed sturcture part photovoltaic module group and the total current measured value by every group of parallel photovoltaic assembly, calculate the short-circuit current value I of every group of photovoltaic module group
Scj, j=1,2,3 ..., M, and by short-circuit current order from big to small the photovoltaic module group is sorted;
(3) according to terminal voltage and the current measurement value of restructural part photovoltaic module, calculate the short-circuit current value I of each photovoltaic module
Sci, i=1,2,3 ..., N, and by short-circuit current order from big to small photovoltaic module is sorted;
The short-circuit current desired value I of every group of parallel photovoltaic assembly group of (4) connecting in the photovoltaic array after the calculating reconstruct
Sc, computing formula is
The target of reconstruct is to make the short-circuit current sum of every group of photovoltaic module as far as possible near this desired value I
Sc
(5) check whether the fixed sturcture part has the desired value I after the short-circuit current sum of photovoltaic module group surpasses reconstruct
ScIf, then cancel the photovoltaic module that this group photovoltaic module group is continued to distribute the restructural part, setting the time T that starts the reconstruction and optimization program next time is very first time threshold value, otherwise setting the time T that starts the reconstruction and optimization program next time is the second time threshold, be that next reconfiguration program is started by excessive this condition of photovoltaic module terminal voltage difference, described the second time threshold is larger than described very first time threshold value;
(6) not yet reach desired value I for fixed sturcture short-circuit current sum partly at every turn
ScThe photovoltaic module group distribute respectively a photovoltaic module to be allocated of partly selecting from restructural; In the assigning process, if there is the short-circuit current sum of photovoltaic module group to surpass the desired value of setting, then take two kinds of measures: 1) keep this sub-distribution constant, but stop immediately next time to this photovoltaic module group reallocation photovoltaic module; 2) cancel a photovoltaic module of nearest distribution, be replaced by in the residue photovoltaic module to be allocated and make this photovoltaic module group short-circuit current surpass desired value I
ScThe photovoltaic module of short-circuit current minimum, after this stop immediately next time to this photovoltaic module group reallocation photovoltaic module; Above-mentioned assigning process loops, until the photovoltaic module of all reconfigurable optical photovoltaic array parts assigns.
(7) the photovoltaic array reconstruction and optimization strategy under the current service condition of formation, and reconstruction signal is discharged in the handover control system of electric power connecting valve, restructural part photovoltaic module accurately is parallel to photovoltaic module group two ends corresponding in the fixed sturcture photovoltaic array.
Beneficial effect of the present invention is mainly manifested in: the present invention need not to measure the residing external environment condition amount of each assembly (irradiance, temperature etc.), also need not to find the solution complicated optimization problem, only need to gather a small amount of several voltage signals and the current signal of each assembly, can obtain gratifying photovoltaic array reconstruction and optimization strategy by simple calculation of short-circuit current and ordering, can the generating efficiency of Effective Raise photovoltaic array under complicated service condition, reduce cost of electricity-generating.Photovoltaic array partly adopts fixed sturcture, part to adopt reconfigurable structures, when improving generating efficiency, also greatly reduces the cost of investment of reconstruct switchgear and has improved system operation reliability.
Description of drawings
Fig. 1 is the synoptic diagram of structure and the Measurement and Control System of local reconfigurable photovoltaic array.
Fig. 2 is the reconstruction and optimization algorithm flow chart of local reconfigurable photovoltaic array.
Fig. 3 is the synoptic diagram that photovoltaic array reconfiguration scheme restructuring procedure is given an example,, wherein, (a) be photovoltaic array running status (one), (b) be photovoltaic array running status (two), (c) be photovoltaic array running status (three).
Fig. 4 is the synoptic diagram of the output power-voltage response of photovoltaic array before and after reconstruct.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1～Fig. 4, a kind of reconstruction and optimization method of photovoltaic battery array local reconfigurable electrical system,
The system architecture of reconfigurable optical photovoltaic array and Measurement and Control System are as shown in Figure 1, photovoltaic array is comprised of fixed sturcture part and two of restructural parts, wherein: the parallel photovoltaic assembly group that the fixed sturcture part is being connected by the M group consists of, and its structure is fixing unadjustable; The restructural part is comprised of N piece photovoltaic module and change-over switch thereof, and every photovoltaic module can select any one group of photovoltaic module group of fixed sturcture part to carry out the parallel connection electrical connection, and concrete connectivity scenario is determined by the reconstruction and optimization algorithm.
In the native system, each photovoltaic module is in series with a reaction diode, connect first a bypass diode in parallel and voltage transformer (VT) behind the current transformer of every group of parallel photovoltaic assembly group in the fixed sturcture photovoltaic array, current transformer of each photovoltaic module series connection in the restructural part photovoltaic array.The electric current circulation that produce owing to each photovoltaic module terminal voltage difference when reaction diode can prevent the photovoltaic module parallel connection.Current transformer then can perception flows through the electric current of each assembly or every group of parallel component group, voltage transformer (VT) can every group of parallel photovoltaic assembly of perception terminal voltage, current signal and voltage signal output to signal conditioning circuit and carry out pre-service, then be input to photovoltaic array reconstruction and optimization control center (single-chip microcomputer, digital processing unit (DSP) etc.), for the photovoltaic array reconstruction and optimization provide basic data.
In the photovoltaic array operational process, for the photovoltaic module in the restructural part photovoltaic array, by the terminal voltage of real-time measurement photovoltaic module and the electric current that flows through, can estimate fast according to the mathematical model (single diode model, duodiode model, engineering model etc.) of photovoltaic module the short-circuit current I of each photovoltaic module
Sci, i=1,2,3 ..., N; For the photovoltaic module in the fixed sturcture part photovoltaic array, by terminal voltage and the total current of every group of parallel photovoltaic assembly of real-time measurement group, can estimate fast the synthetic short-circuit current I of every group of photovoltaic module group according to the equivalent model of parallel photovoltaic assembly group
Scj, j=1,2,3 ..., M.Short-circuit current has reflected the ambient conditions such as the illumination condition of photovoltaic module all the time and temperature well, has not only avoided the relatively high irradiance of cost and the measurement of temperature, and can obtain the higher measurement data that is applicable to the reconstruction and optimization algorithm of precision.
In the photovoltaic array operational process, the information that measures is pooled to reconstruction and optimization control center.In the implementation case, control center to the reconstruction and optimization strategic process figure of photovoltaic array as shown in Figure 2, concrete steps are as follows:
(1) photovoltaic array has the rear fixed sturcture part that forms photovoltaic array of M group photovoltaic module group series connection by the operation of reconstruction and optimization scheme; There is N piece photovoltaic module to be positioned at the restructural part of photovoltaic array, can responds at any time its access interface of reconstruction and optimization project setting.The voltage transformer (VT) summation current transformer is sent to the voltage and current signal of control center among collection Fig. 1.
(2) if when occurring than big difference between the terminal voltage of photovoltaic array continuous service (middle without reconstructed operation) time greater than setting-up time T or series connection photovoltaic module group, start photovoltaic array reconstruction and optimization program, enter next step; Otherwise jump to step (1).
(3) according to the terminal voltage of fixed sturcture part photovoltaic module group and the total current measured value by every group of parallel photovoltaic assembly group, calculate the short-circuit current value I of every group of photovoltaic module group
Scj, j=1,2,3 ..., M, and by short-circuit current order from big to small the photovoltaic module group is sorted I after the ordering
Sc1I
Sc2I
Sc3... I
ScMAccording to terminal voltage and the current measurement value of restructural part photovoltaic module, calculate the short-circuit current value I of each photovoltaic module
Sci, i=1,2,3 ..., N, and by short-circuit current order from big to small photovoltaic module is sorted I after the ordering
Sc1I
Sc2I
Sc3... I
ScN
The desired value of the short-circuit current of every group of photovoltaic module of (4) connecting in the photovoltaic array after the calculating reconstruct is
The target of reconstruct is to make the short-circuit current sum of every group of photovoltaic module as far as possible near this desired value I
Sc
(5) if fixed sturcture partly has the desired value I after the short-circuit current of photovoltaic module group surpasses reconstruct
ScThen reject the distribution of this group photovoltaic module group sustainable participation reconstruct photovoltaic module, the photovoltaic module group quantity m of record participation reconstruct (m＜M), make T=5 minute (short time all can), otherwise participate in the photovoltaic module group quantity m=M of reconstruct, make T=4 hour (long time all can).
(6) make the counter i=1 of restructural part photovoltaic module, the allocation wheel number of fixed sturcture part photovoltaic module group (every group of photovoltaic module component of participating in the distribution be fitted on a photovoltaic module be designated as take turns) counter k=1.
(7) each takes turns counter j=1+ (m-1) the * mod (k/2) of fixed sturcture part photovoltaic module group in the distribution, its implication is: in the odd number wheel distributed, j began inverse from m, in the even number wheel distributes, j is since 1 suitable number, and mod is the remainder numerical symbol.
(8) photovoltaic module that restructural part i is individual distributes the two ends that are parallel to j group photovoltaic module group.
(9) the short-circuit current sum I of j group photovoltaic module group behind the calculating adding reconstruct photovoltaic module
Scj
(10) if I
ScjMore than or equal to I
Sc, the then distribution of i piece photovoltaic module is selected to make j group short-circuit current and is surpassed I in treating the reconstruct photovoltaic module
ScThe photovoltaic module (sequence number n) of short-circuit current minimum add the j group.The photovoltaic module numbering of restructural partial short circuit sequence electric current between (comprising) i and n all adds 1.Reject j group photovoltaic module and participate in ensuing reconstruct, and make next round participate in the photovoltaic module group quantity tp=m-1 that the reconfigurable optical photovoltaic assembly distributes.If I
ScjLess than I
Sc, then directly change next step over to.
(11) make i=i+1, j=j+ (1)
k, that is: in the odd number wheel, j successively decreases, and in the even number wheel, j increases progressively.
(12) if i, illustrates that the reconfigurable optical photovoltaic assembly assigns in the photovoltaic array greater than N, then directly turn step (14), otherwise turn next step.
(13) if j greater than m or j less than 1, then make next round participate in the photovoltaic module group quantity m=tp that reconstruct distributes, then wheel counter k=k+1 jumps to step (7); Otherwise jump to step (8), continue the distribution of epicycle photovoltaic module.
(14) form new reconfiguration scheme, and the reconstruct control command is sent to the change-over switch of each photovoltaic module, then jump to step (1), wait for the startup of next time reconstruction and optimization program.
Above-mentioned reconstruction and optimization flow process is based on system architecture and the measuring system layout of local reconfigurable photovoltaic array among the present invention, according to the basic thought of photovoltaic array reconstruction and optimization (total short-circuit current of namely guaranteeing the M group parallel photovoltaic assembly group of connecting in the photovoltaic array after the reconstruct is equal as far as possible), design.By above-mentioned reconstruction and optimization flow process or parameter are made amendment, can also be derived multiple reconstruction and optimization flow process, as long as it has used photovoltaic array reconstruct structure proposed by the invention or reconstruction and optimization thought, all be subjected to the protection of patent of the present invention.
With above-mentioned reconstruction and optimization algorithm application in a photovoltaic array system that comprises 15 photovoltaic modulies, wherein fixed sturcture partly comprises 9 photovoltaic modulies and (is divided into three groups, every group of photovoltaic module by 3 parallel connections consists of), restructural partly comprises 6 photovoltaic modulies (2. 3. 4. 5. 6. 1. numbering be respectively).Among Fig. 3, running status (one) is the initial launch state of photovoltaic array, and wherein 6 photovoltaic modulies of restructural part are divided into three groups of photovoltaic module group two ends that [(1. 2.), (3. 4.), (5. 6.)] three groups is connected in parallel on respectively the fixed sturcture part; After service condition changes, variation has occured in the short-circuit current of part photovoltaic module (being marked among the figure), photovoltaic array before the reconstruct shown in running status among Fig. 3 (two), the same running status of the grouping of reconfigurable optical photovoltaic assembly and access scheme (); Photovoltaic array after the reconstruct is shown in running status among Fig. 3 (three), the photovoltaic module of restructural part is divided into [(1. 4.), (6.), (2. 3. 5.)] three groups according to the reconstruction and optimization strategy, then is connected in parallel on respectively three groups of photovoltaic module group two ends of fixed sturcture part.After adopting above-mentioned reconstruction and optimization algorithm that the structure of photovoltaic array is optimized adjustment, the short-circuit current sum of every group of photovoltaic module group than reconstruct before more approaching equating.
Fig. 4 has drawn under above-mentioned three kinds of running statuses, the output terminal power-voltage response of photovoltaic array.When the short-circuit current of all photovoltaic modulies in the photovoltaic array equated, the output terminal power-voltage response of photovoltaic array (running status ()) presented unimodal state, and Maximum Power Output is about 4000W.After service condition changes, variation has occured in the short-circuit current of part photovoltaic module, if former photovoltaic array structure is not reconstructed adjustment, then photovoltaic array output terminal power-voltage response of this moment is shown in curve among Fig. 4 (running status (two)), present a plurality of peak values, this moment photovoltaic array the about 1750W of peak power output, and MPPT maximum power point tracking (MPPT) thus algorithm may lock into the larger power loss of local maximum power point introducing.If be optimized adjustment according to above-mentioned reconstruction and optimization algorithm to the structure of photovoltaic array this moment, the photovoltaic array output terminal power-voltage curve corresponding with it is shown in curve among Fig. 4 (running status (three)), substantially present unimodal state, its peak power output is about 2350W, peak power output 1750W apparently higher than running status (two), unimodal power-voltage curve has also reduced the requirement to the MPPT algorithm in addition, has improved the tracking accuracy of MPPT algorithm.
This shows, by adopting part reconfigurable optical photovoltaic array system architecture and reconstruction and optimization algorithm proposed by the invention, can significantly improve the output power-voltage response of photovoltaic array, make it closer to unimodal state, be convenient to the MPPT method and trace into global maximum power point.In addition, because photovoltaic module mismatch power loss reduces, greatly improved the output power of photovoltaic array under the same service condition.Compare with complete reconfigurable optical photovoltaic array, the present invention has reduced the photovoltaic module quantity that participates in reconstruct, and simpler, the required measuring equipment quantity of system architecture reduces, optimized algorithm speed is faster.
Claims (1)
1. the reconstruction and optimization method of a photovoltaic battery array local reconfigurable electrical system is characterized in that: described photovoltaic battery array comprises by the fixed sturcture part and partly forming with restructural,
The photovoltaic array of described fixed sturcture part comprises the photovoltaic module group that the M group is being connected, any several photovoltaic modulies of two end interfaces of every group of photovoltaic module group restructural part in parallel; Described restructural partly comprises N piece photovoltaic module, and N piece photovoltaic module will be divided on the external interface of the M group photovoltaic module group that is parallel to respectively corresponding with it fixed sturcture after M organizes;
Each photovoltaic module is in series with a reaction diode, connect first a bypass diode in parallel and voltage transformer (VT) behind the current transformer of every group of parallel photovoltaic assembly group in the photovoltaic array of fixed sturcture part, current transformer of each photovoltaic module series connection in the photovoltaic array of restructural part;
In the photovoltaic array operational process, for the photovoltaic module in the restructural part photovoltaic array, by the terminal voltage of real-time measurement photovoltaic module and the electric current that flows through, estimate fast the short-circuit current I of each photovoltaic module according to the mathematical model of photovoltaic module
Sci, i=1,2,3 ..., N; For the photovoltaic module in the fixed sturcture part photovoltaic array, by terminal voltage and the total current of every group of parallel photovoltaic assembly of real-time measurement group, estimate fast the synthetic short-circuit current I of every group of photovoltaic module group according to the equivalent model of parallel photovoltaic assembly group
Scj, j=1,2,3 ..., M;
Described reconstruction and optimization method may further comprise the steps:
(1) gathers the voltage and current signal; When reconstruction and optimization start-up times to or the terminal voltage of series connection photovoltaic module group between when occurring exceeding preset difference value, start the photovoltaic array reconstruction and optimization;
(2) according to the terminal voltage of fixed sturcture part photovoltaic module group and the total current measured value by every group of parallel photovoltaic assembly, calculate the short-circuit current value I of every group of photovoltaic module group
Scj, j=1,2,3 ..., M, and by short-circuit current order from big to small the photovoltaic module group is sorted;
(3) according to terminal voltage and the current measurement value of restructural part photovoltaic module, calculate the short-circuit current value I of each photovoltaic module
Sci, i=1,2,3 ..., N, and by short-circuit current order from big to small photovoltaic module is sorted;
The short-circuit current desired value I of every group of parallel photovoltaic assembly group of (4) connecting in the photovoltaic array after the calculating reconstruct
Sc, computing formula is
The target of reconstruct is to make the short-circuit current sum of every group of photovoltaic module as far as possible near this desired value I
Sc
(5) check whether the fixed sturcture part has the desired value I after the short-circuit current sum of photovoltaic module group surpasses reconstruct
ScIf, then cancel the photovoltaic module that this group photovoltaic module group is continued to distribute the restructural part, setting the time T that starts the reconstruction and optimization program next time is very first time threshold value, otherwise setting the time T that starts the reconstruction and optimization program next time is the second time threshold, be that next reconfiguration program is started by excessive this condition of photovoltaic module terminal voltage difference, described the second time threshold is larger than described very first time threshold value;
(6) not yet reach desired value I for fixed sturcture short-circuit current sum partly at every turn
ScThe photovoltaic module group distribute respectively a photovoltaic module to be allocated of partly selecting from restructural; In the assigning process, if there is the short-circuit current sum of photovoltaic module group to surpass the desired value of setting, then take two kinds of measures: 1) keep this sub-distribution constant, but stop immediately next time to this photovoltaic module group reallocation photovoltaic module; 2) cancel a photovoltaic module of nearest distribution, be replaced by in the residue photovoltaic module to be allocated and make this photovoltaic module group short-circuit current surpass desired value I
ScThe photovoltaic module of short-circuit current minimum, after this stop immediately next time to this photovoltaic module group reallocation photovoltaic module; Above-mentioned assigning process loops, until the photovoltaic module of all reconfigurable optical photovoltaic array parts assigns.
(7) the photovoltaic array reconstruction and optimization strategy under the current service condition of formation, and reconstruction signal is discharged in the handover control system of electric power connecting valve, restructural part photovoltaic module accurately is parallel to photovoltaic module group two ends corresponding in the fixed sturcture photovoltaic array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558810.XA CN103049035B (en) | 2012-12-20 | 2012-12-20 | Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558810.XA CN103049035B (en) | 2012-12-20 | 2012-12-20 | Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103049035A true CN103049035A (en) | 2013-04-17 |
| CN103049035B CN103049035B (en) | 2014-11-12 |
Family
ID=48061710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210558810.XA Active CN103049035B (en) | 2012-12-20 | 2012-12-20 | Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103049035B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353716A (en) * | 2013-05-16 | 2013-10-16 | 河海大学 | Topological structure capable of realizing photovoltaic array reconstruction and method for solving maximum power point |
| CN107423501A (en) * | 2017-07-17 | 2017-12-01 | 南京邮电大学 | A kind of array automatic detection and method for numbering serial based on photovoltaic plant logic chart |
| CN109067358A (en) * | 2018-08-06 | 2018-12-21 | 浙江工业大学 | Photovoltaic array reconstruction optimization method based on shading battery number |
| CN109842155A (en) * | 2019-03-05 | 2019-06-04 | 协鑫能源工程有限公司 | The series-parallel loss appraisal method, apparatus of photovoltaic module and computer equipment |
| CN112332517A (en) * | 2020-10-16 | 2021-02-05 | 许继电源有限公司 | Photovoltaic charging MPPT control circuit |
| CN117154853A (en) * | 2023-10-27 | 2023-12-01 | 兰州理工大学 | Photovoltaic array double-reconstruction strategy based on static reconstruction and partial reconstruction |
| CN117239742A (en) * | 2023-11-14 | 2023-12-15 | 成都量芯集成科技有限公司 | Photovoltaic array global reconstruction device and method based on improved ant colony algorithm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090079412A1 (en) * | 2007-09-24 | 2009-03-26 | Yao Hsien Kuo | Apparatus and method for controlling the output of a photovoltaic array |
| CA2747684A1 (en) * | 2008-12-18 | 2010-06-24 | Centre National De La Recherche Scientifique | Electronic management system for photovoltaic cells |
| US20110140532A1 (en) * | 2009-12-16 | 2011-06-16 | Nagendra Srinivas Cherukupalli | Systems, Circuits, and Methods For Generating a Solar Cell String of an Adaptive Solar Power System |
| WO2012006723A1 (en) * | 2010-07-16 | 2012-01-19 | Mohamed Zakaria Mohamed Ahmed Shamseldein | Reconfigurable photovoltaic structure |
| WO2012122131A2 (en) * | 2011-03-04 | 2012-09-13 | Paceco Corp | Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array |
-
2012
- 2012-12-20 CN CN201210558810.XA patent/CN103049035B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090079412A1 (en) * | 2007-09-24 | 2009-03-26 | Yao Hsien Kuo | Apparatus and method for controlling the output of a photovoltaic array |
| CA2747684A1 (en) * | 2008-12-18 | 2010-06-24 | Centre National De La Recherche Scientifique | Electronic management system for photovoltaic cells |
| US20110140532A1 (en) * | 2009-12-16 | 2011-06-16 | Nagendra Srinivas Cherukupalli | Systems, Circuits, and Methods For Generating a Solar Cell String of an Adaptive Solar Power System |
| WO2012006723A1 (en) * | 2010-07-16 | 2012-01-19 | Mohamed Zakaria Mohamed Ahmed Shamseldein | Reconfigurable photovoltaic structure |
| WO2012122131A2 (en) * | 2011-03-04 | 2012-09-13 | Paceco Corp | Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array |
Non-Patent Citations (1)
| Title |
|---|
| DZUNG NGUYN,BRAD LEHMAN: "An Adaptive Solar Photovoltaic Array Using Model-Based Reconfiguration Algoithm", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353716A (en) * | 2013-05-16 | 2013-10-16 | 河海大学 | Topological structure capable of realizing photovoltaic array reconstruction and method for solving maximum power point |
| CN103353716B (en) * | 2013-05-16 | 2015-09-16 | 河海大学 | Topological structure and the maximum power point method for solving of photovoltaic array reconstruction can be realized |
| CN107423501A (en) * | 2017-07-17 | 2017-12-01 | 南京邮电大学 | A kind of array automatic detection and method for numbering serial based on photovoltaic plant logic chart |
| CN107423501B (en) * | 2017-07-17 | 2020-05-19 | 南京邮电大学 | Array automatic detection and numbering method based on photovoltaic power station logic diagram |
| CN109067358A (en) * | 2018-08-06 | 2018-12-21 | 浙江工业大学 | Photovoltaic array reconstruction optimization method based on shading battery number |
| CN109067358B (en) * | 2018-08-06 | 2019-11-29 | 浙江工业大学 | Photovoltaic array reconstruction optimization method based on shading battery number |
| CN109842155A (en) * | 2019-03-05 | 2019-06-04 | 协鑫能源工程有限公司 | The series-parallel loss appraisal method, apparatus of photovoltaic module and computer equipment |
| CN112332517A (en) * | 2020-10-16 | 2021-02-05 | 许继电源有限公司 | Photovoltaic charging MPPT control circuit |
| CN117154853A (en) * | 2023-10-27 | 2023-12-01 | 兰州理工大学 | Photovoltaic array double-reconstruction strategy based on static reconstruction and partial reconstruction |
| CN117154853B (en) * | 2023-10-27 | 2024-01-09 | 兰州理工大学 | Photovoltaic array double-reconstruction strategy based on static reconstruction and partial reconstruction |
| CN117239742A (en) * | 2023-11-14 | 2023-12-15 | 成都量芯集成科技有限公司 | Photovoltaic array global reconstruction device and method based on improved ant colony algorithm |
| CN117239742B (en) * | 2023-11-14 | 2024-01-26 | 成都量芯集成科技有限公司 | Photovoltaic array global reconstruction device and method based on improved ant colony algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103049035B (en) | 2014-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103049035B (en) | Reconfiguration optimizing method of photovoltaic cell array local reconfigurable electrical system | |
| Wang et al. | Virtual-battery based droop control and energy storage system size optimization of a DC microgrid for electric vehicle fast charging station | |
| CN103064459B (en) | Reconfiguration optimization method of photovoltaic cell array completely reconfigurable electrical system | |
| CN102244390B (en) | Smooth energy storage system capacity optimization method for microgrid junctor power fluctuation | |
| Li et al. | Active DC bus signaling control method for coordinating multiple energy storage devices in DC microgrid | |
| Lin et al. | Online fault detection and tolerance for photovoltaic energy harvesting systems | |
| CN104319768A (en) | Micro-grid power supply and monitoring method | |
| CN103730910A (en) | Dynamic equivalence method for large-scale photovoltaic power station grid connection | |
| US20170271880A1 (en) | Resiliency controller for frequency regulation in islanded microgrid | |
| Reddy et al. | A MATLAB based PV module models analysis under conditions of nonuniform irradiance | |
| Li et al. | Study on voltage control in distribution network with renewable energy integration | |
| CN105047966A (en) | Multi-mode operation control method and multi-mode operation control system for flow battery | |
| CN106779374A (en) | Photovoltaic generation transmits peak power energy storage Optimization Modeling method | |
| CN102624284A (en) | Solar cell photovoltaic transform matrix adjustment output control method | |
| Li et al. | A novel control strategy based on DC bus signaling for DC micro-grid with photovoltaic and battery energy storage | |
| Zhou et al. | Reliability evaluation of grid-connected micro-grid considering demand response | |
| Wanxing et al. | The anomalous data identification study of reactive power optimization system based on big data | |
| Zacchaeus et al. | Modelling and Simulation of DC microgrid | |
| CN110739747B (en) | Equalization control method of battery pack | |
| Barote et al. | Renewable hybrid system with battery storage for safe loads supply | |
| Wei et al. | Research on the output characteristics of photovoltaic arrays under partial shading conditions based on peak point approximate calculation method | |
| Akare et al. | Multilevel converter for direct grid integration of renewable energy system | |
| Muhammad et al. | Efficient and balanced charging of reconfigurable battery with variable power supply | |
| Jeong et al. | Development of active module considering the shadow influence of photovoltaic system | |
| CN113659625B (en) | Power control method, equipment and storage medium of photovoltaic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |