CN114722547A - Photovoltaic module serial line arrangement determining method and device, electronic equipment and storage medium - Google Patents
Photovoltaic module serial line arrangement determining method and device, electronic equipment and storage medium Download PDFInfo
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- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
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- G—PHYSICS
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a method and a device for determining serial line arrangement of photovoltaic modules, electronic equipment and a storage medium. The method for determining the serial line arrangement of the photovoltaic module comprises the following steps: determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module; determining the string mode of the photovoltaic modules at each arrangeable position of the inverter according to the arrangeable position of the inverter; and respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each string of wire mode and the distance of a jumper wire in each string of wire mode, and arranging the wire mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper wire as the optimal wire mode. The technical scheme of the embodiment of the invention realizes the effects of determining the better inverter position and the better photovoltaic module serial line arrangement.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a method and a device for determining serial line arrangement of a photovoltaic module, electronic equipment and a storage medium.
Background
The basic power generation unit of the photovoltaic power station is a photovoltaic module, and when the photovoltaic power station is built, the photovoltaic modules need to be connected into a string and then connected with an inverter.
In photovoltaic modules in household, distributed and large-scale power stations, a plurality of small holes and odd-shaped and strange matrixes can be formed in common module arrangement, the inverter position cannot reach the optimum, and the serial cables of the photovoltaic modules are long when the photovoltaic modules are connected, so that a large amount of cables are wasted.
Disclosure of Invention
The invention provides a method and a device for determining photovoltaic module serial line arrangement, electronic equipment and a storage medium, and aims to determine a better inverter position and photovoltaic module serial line arrangement.
According to an aspect of the present invention, there is provided a method for determining a serial line arrangement of a photovoltaic module, the method including:
determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module;
determining the string mode of the photovoltaic modules at each arrangeable position of the inverter according to the arrangeable position of the inverter;
and respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each string of wire mode and the distance of a jumper wire in each string of wire mode, and taking the string mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper wire as the optimal string wire arrangement.
Optionally, determining the arrangeable position of the inverter according to the site where the photovoltaic module is installed and the arrangement mode includes:
dividing the photovoltaic module into a plurality of areas according to the site where the photovoltaic module is installed;
and determining the arrangeable position of the inverter corresponding to each regional component according to the arrangement density and the arrangement position of each regional component.
Optionally, determining the arrangeable position of the inverter corresponding to each regional component according to the arrangement density and the arrangement position of each regional component includes:
determining the ratio of the arrangement density of each regional component to the reference arrangement density, and taking the product of the ratio and the number of the reference inverters as the number of the inverters corresponding to each regional component;
and determining the arrangeable positions of the inverters corresponding to the zone components according to the number of the inverters and the arrangement positions of the zone components.
Optionally, determining a string mode of the photovoltaic module at each arrangeable position of the inverter according to the arrangeable position of the inverter includes:
dividing the photovoltaic modules into a plurality of groups according to a preset step length, and iteratively searching the neighborhood of each group of modules to obtain a plurality of groups within a preset group range;
and obtaining a plurality of string modes according to the group string and the arrangeable position of the inverter.
Optionally, dividing the photovoltaic modules into a plurality of groups according to a preset step size includes:
and dividing the photovoltaic modules into a plurality of groups according to a preset single step length or a preset combined step length.
Optionally, iteratively searching the neighborhood of each group of components includes:
and iteratively searching two neighborhoods, four neighborhoods or eight neighborhoods of each group of components.
Optionally, separately calculating manhattan distances from the positive terminal and the negative terminal to positions where the inverters can be arranged in each string of the serial line mode, includes:
determining coordinates of the positive terminal and the negative terminal in each string of serial line mode;
and calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged according to the coordinates of the positive terminal and the negative terminal.
According to another aspect of the present invention, there is provided a photovoltaic module string arrangement determining apparatus, including:
the inverter position determining module is used for determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module;
the string mode determining module is used for determining the string mode of the photovoltaic module at each arrangeable position of the inverter according to the arrangeable position of the inverter;
and the serial line arrangement determining module is used for respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each serial line mode and the distance of a jumper in each serial line mode, and taking the serial line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper as the optimal serial line arrangement.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the method for determining the string arrangement of photovoltaic modules according to any embodiment of the present invention.
According to another aspect of the present invention, a computer-readable storage medium is provided, and computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed, the computer instructions are used for enabling a processor to implement the method for determining the string arrangement of the photovoltaic modules according to any embodiment of the present invention.
According to the technical scheme of the embodiment of the invention, the arrangeable position of the inverter is determined according to the installation site and the arrangement mode of the photovoltaic module so as to determine the optimal position of the inverter. According to the arrangeable positions of the inverters, the photovoltaic modules can be subjected to group string division, so that the string mode of the photovoltaic modules at each arrangeable position of the inverters is determined. And calculating the Manhattan distance from the positive and negative terminals of all the groups of strings in each string line mode to the arrangeable positions of the corresponding inverters, and obtaining the Manhattan distance from the positive and negative terminals in each string line mode to the arrangeable positions of the inverters. The manhattan distance from the positive terminal and the negative terminal in each string of line mode to the position where the inverter can be arranged is added to the jumper distance in each string of line mode, so that the string length of each string of line mode can be obtained. All the string lengths are compared, and the string mode corresponding to the minimum string length in all the string lengths is used as the optimal string arrangement mode, so that the optimal string arrangement can be realized, the cable length can be reduced, the series connection time of the photovoltaic modules can be shortened, and the string cost can be reduced. The technical scheme of this embodiment has solved when photovoltaic module carries out the series connection with the square matrix of odd-shaped strange form and arranges, the inverter position can't reach the optimum, and the series connection cable of photovoltaic module when connecting is longer, leads to the extravagant problem in a large number of cables, has realized confirming the effect that better inverter position and better photovoltaic module series connection were arranged.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining a string arrangement of photovoltaic modules according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an inverter layout position provided by the embodiment of the invention;
fig. 3 is a flowchart of another method for determining a string arrangement of photovoltaic modules according to an embodiment of the present invention;
fig. 4 is a schematic view of region division of a photovoltaic module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a grouping manner of photovoltaic modules according to an embodiment of the present invention;
FIG. 6 is a schematic view of each set of photovoltaic modules corresponding to FIG. 5;
FIG. 7 is a schematic illustration of a neighborhood of a photovoltaic module according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of a neighborhood of another photovoltaic module provided by an embodiment of the present invention;
FIG. 9 is a schematic diagram of group string partitioning according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another group string partition provided by the embodiment of the present invention;
fig. 11 is a schematic diagram of manhattan distances of positive and negative terminals to positions where inverters can be arranged in a serial manner according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of the Manhattan distance from the positive and negative terminals to the inverter layout position in another series arrangement provided by the embodiment of the invention;
fig. 13 is a flowchart of another method for determining a string arrangement of photovoltaic modules according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a photovoltaic module serial line arrangement determining apparatus according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a flowchart of a method for determining a serial line arrangement of a photovoltaic module according to an embodiment of the present invention, where this embodiment is applicable to a case of determining a serial line arrangement manner of a photovoltaic module, and the method may be executed by a serial line arrangement determining apparatus of a photovoltaic module, as shown in fig. 1, the method for determining a serial line arrangement of a photovoltaic module includes:
and S110, determining the layout position of the inverter according to the installation site and the layout mode of the photovoltaic module.
For example, the photovoltaic modules may be installed in different sites, the arrangement modes of the photovoltaic modules installed in different sites may be different, and the arrangeable positions of the inverters may be determined according to the sites where the photovoltaic modules are located and the arrangement modes of the photovoltaic modules. The photovoltaic module is installed on a place such as a roof, the inverters can be arranged on a wall surface below the roof, and the arrangeable positions of the inverters can be determined according to the arrangement mode of the photovoltaic modules on the roof, for example, more inverters can be arranged at positions with higher arrangement density of the photovoltaic modules, and fewer inverters can be arranged at positions with lower arrangement density of the photovoltaic modules, so that a better inverter position can be determined. Fig. 2 is a schematic diagram of an inverter arrangeable position according to an embodiment of the present invention, as shown in fig. 2, a field 100 where a photovoltaic module 200 is installed is, for example, a roof, the roof is covered with the photovoltaic module 200, a whole roof area may be subjected to position discretization, for example, the inverter may be evenly arranged at a position of a lower wall point corresponding to the whole roof area, so as to determine an arrangeable position 300 of the inverter.
And S120, determining the serial line mode of the photovoltaic modules at each arrangeable position of the inverter according to the arrangeable positions of the inverter.
Specifically, according to the arrangeable positions of the inverters, the photovoltaic modules can be subjected to string division to obtain a plurality of string groups, and the string mode of each string group is determined, so that the string mode of the photovoltaic modules at each arrangeable position of the inverters can be determined. The inverter can be arranged at different positions, and the group strings can be divided differently, so that the photovoltaic module can have multiple group string dividing modes, each dividing mode can obtain a string mode, and multiple string modes can be obtained according to the group strings and the inverter.
S130, respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each string of serial line mode and the distance of a jumper in each string of serial line mode, and taking the serial line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper as the optimal serial line arrangement.
The manhattan distance is the distance between two points in the north-south direction plus the distance in the east-west direction; because photovoltaic module sets up on the roof, and the position wall under the roof can be arranged to the dc-to-ac converter, and when photovoltaic module was connected with the dc-to-ac converter, the lug connection probably led to the cable unsettled, so carry out wiring connection along the wall, just need the east-west direction and lay wire with north-south direction. Therefore, the manhattan distance from the positive and negative terminals to the inverter arrangeable position is calculated, and the accurate wiring length can be obtained.
Because the positive terminal and the negative terminal of the photovoltaic module are provided with shorter connecting wires, the transverse connection wires between the transversely adjacent photovoltaic modules can be connected by the existing connecting wires, and when the photovoltaic modules are connected vertically or obliquely, jumper wires are needed to be used for connection, so that the length of the jumper wires in each string of line modes can be determined by calculating the lengths of the vertical wires and the oblique wires in each string of line modes, and the length of the cable needed in each string of line modes is obtained.
Specifically, each string is provided with a plurality of strings, the photovoltaic modules in each string can be connected in series, the positive terminal is left at the starting point of the string to be connected with the inverter, and the negative terminal is left at the end point of the string to be connected with the inverter; alternatively, the start of the string may leave the negative terminal connected to the inverter and the end of the string may leave the positive terminal connected to the inverter. And calculating the Manhattan distance from the positive and negative terminals of all the groups of strings in each string line mode to the arrangeable positions of the corresponding inverters, so that the Manhattan distance from the positive and negative terminals in each string line mode to the arrangeable positions of the inverters can be obtained. The manhattan distance from the positive terminal and the negative terminal in each string of line mode to the position where the inverter can be arranged is added to the jumper distance in each string of line mode, so that the string length of each string of line mode can be obtained. All the string lengths are compared, and the string mode corresponding to the minimum string length in all the string lengths is used as the optimal string arrangement mode, so that the optimal string arrangement can be realized, the cable length can be reduced, the series connection time of the photovoltaic module can be shortened, and the string cost can be reduced.
According to the technical scheme of the embodiment, the arrangeable position of the inverter is determined according to the installation site and the arrangement mode of the photovoltaic module, so that the optimal position of the inverter is determined. According to the arrangeable positions of the inverters, the photovoltaic modules can be subjected to group string division, so that the string mode of the photovoltaic modules at each arrangeable position of the inverters is determined. And calculating the Manhattan distance from the positive and negative terminals of all the strings in each string mode to the arrangeable positions of the corresponding inverters, so as to obtain the Manhattan distance from the positive and negative terminals in each string mode to the arrangeable positions of the inverters. The manhattan distance from the positive terminal and the negative terminal in each string of line mode to the position where the inverter can be arranged is added to the jumper distance in each string of line mode, so that the string length of each string of line mode can be obtained. All the string lengths are compared, and the string mode corresponding to the minimum string length in all the string lengths is used as the optimal string arrangement mode, so that the optimal string arrangement can be realized, the cable length can be reduced, the series connection time of the photovoltaic modules can be shortened, and the string cost can be reduced. The technical scheme of this embodiment has solved when photovoltaic module carries out the series connection with the square matrix of odd-shaped strange form and arranges, the inverter position can't reach the optimum, and the series connection cable of photovoltaic module when connecting is longer, leads to the extravagant problem in a large number of cables, has realized confirming the effect that better inverter position and better photovoltaic module series connection were arranged.
Fig. 3 is a flowchart of another photovoltaic module string arrangement determining method according to an embodiment of the present invention, and as shown in fig. 3, the photovoltaic module string arrangement determining method includes:
s210, dividing the photovoltaic module into a plurality of areas according to the installation site of the photovoltaic module.
Specifically, the photovoltaic module can be divided into a plurality of areas according to the characteristics of the site where the photovoltaic module is located; the photovoltaic module is installed on a roof, for example, and the photovoltaic module may be divided into a plurality of regions based on the vertex of the roof, for example, when the roof has four vertices, the photovoltaic module may be divided into four regions, so that the arrangeable position of the corresponding inverter may be determined according to the photovoltaic module of each region.
And S220, determining the arrangeable positions of the inverters corresponding to the regional components according to the arrangement density and the arrangement positions of the regional components.
Specifically, the number of inverters corresponding to each zone component may be determined according to the arrangement density of each zone component, for example, when the arrangement density of a certain zone component is higher, the number of inverters corresponding to the zone component is higher; when the arrangement density of a certain regional component is small, the number of inverters corresponding to the regional component is small. The arrangeable positions of the inverters can be determined according to the arrangement positions of the regional components and the number of the inverters corresponding to the regional components, for example, the arrangeable positions of the inverters can be determined by limiting the distance between the inverters and each photovoltaic component to be smaller than a first preset distance; the arrangeable position of the inverter can also be determined by limiting the distance between the center of each area component and the inverter to be less than a second preset distance; the placeable position of the inverter may also be determined in other ways, which are not limited herein.
Optionally, determining the arrangeable position of the inverter corresponding to each zone component according to the arrangement density and the arrangement position of each zone component includes:
step a, determining the ratio of the arrangement density of each regional component to the reference arrangement density, and taking the product of the ratio and the number of the reference inverters as the number of the inverters corresponding to each regional component.
Specifically, the photovoltaic module has a reference arrangement density ofRho, the number of the reference inverters is B, the arrangement density of the photovoltaic modules in the ith area is rho i, wherein i is a positive integer greater than or equal to 1, and the number of the inverters corresponding to the photovoltaic modules in the ith area is
The number of inverters corresponding to each zone component can be determined.
And b, determining the arrangeable positions of the inverters corresponding to the regional components according to the number of the inverters and the arrangement positions of the regional components.
Specifically, the number of inverters may be determined, and then the arrangeable positions of the corresponding inverters may be determined according to the arrangement positions of the area components; the arrangeable position of the inverter can be determined, for example, by defining the distance between the inverter and the photovoltaic module to be less than a first preset distance; the arrangeable position of the inverter can also be determined by limiting the distance between the center of each area component and the inverter to be less than a second preset distance; the placeable position of the inverter may also be determined in other ways, which are not limited herein.
For example, fig. 4 is a schematic diagram of region division of a photovoltaic module according to an embodiment of the present invention, and as shown in fig. 4, if a building in which the photovoltaic module is located has four vertices, the photovoltaic module may be divided into four regions a1, a2, A3, and a4, where the reference inverter number is, for example, B1, a2, A3, and a4, where when the a1 region is full of photovoltaic modules, the arrangement density ρ 1 of the a1 region is ρ, the number of inverters corresponding to the a1 region is B1 — 4, and then the a1 region may be provided with inverters B11, B12, B13, and B14; the arrangement density of the A2 area is rho 2, and the number of inverters corresponding to the A2 area is
B2 obtained by rounding is 2, inverters B21 and B22 can be arranged in the a2 area, and the specific positions of the inverters can be determined according to the arrangement positions of the photovoltaic modules; the arrangement density of the A3 area is rho 3, and the number of the inverters corresponding to the A3 area is
B3 obtained by rounding is 2, inverters B31 and B32 can be arranged in the A3 area, and the specific positions of the inverters can be determined according to the arrangement positions of the photovoltaic modules; the arrangement density of the A4 area is rho 4, and the number of the inverters corresponding to the A4 area is
And if the B4 obtained by rounding is 3, the a4 region can be provided with inverters B41, B42 and B43, and the specific positions of the inverters can be determined according to the arrangement positions of the photovoltaic modules, so that the number and the positions of the inverters can be determined.
And S230, dividing the photovoltaic modules into a plurality of groups according to a preset step length, and iteratively searching the neighborhood of each group of modules to obtain a plurality of strings in a preset string range.
The preset string range is the number of photovoltaic modules in the string which can be connected with each inverter, the value of the preset string range can be determined according to parameters such as working voltage, power and temperature of the inverters, and the preset string range of each inverter can be different.
Specifically, the photovoltaic modules are divided into multiple groups according to a preset step length, and neighborhoods of each group of modules are searched in an iterative mode until the number of the photovoltaic modules meets a preset string range, so that a string is obtained. And then iteratively searching the neighborhoods of the rest photovoltaic modules until the number of the photovoltaic modules meets the preset string range, obtaining a string group again, and repeating the steps until all the photovoltaic modules are traversed, and obtaining a plurality of string groups.
Optionally, dividing the photovoltaic module into a plurality of groups according to a preset step length includes:
and dividing the photovoltaic modules into a plurality of groups according to a preset single step length or a preset combined step length.
Specifically, the preset step length may be a single step length or a combined step length, and when the preset step length is the single step length, the single step length may be 1, 2,3, or other numerical values; when the preset step length is the combined step length, the combined step length can be [2,3], that is, in a row of photovoltaic modules, grouping can be performed according to the step length 2, and then grouping can be performed according to the step length 3; the specific value of the preset step length may be determined according to actual conditions, and is not limited herein.
Exemplarily, fig. 5 is a schematic diagram of a grouping manner of photovoltaic modules according to an embodiment of the present invention, and as shown in fig. 5, 4 rows of photovoltaic modules are provided, which are respectively row C1, row C2, row C3, and row C4. The photovoltaic modules in each row are grouped according to a preset step length, for example, the preset step length is a combined step length [2,3], the rows C1 can be divided into three groups, the rows C2 can be divided into three groups, the rows C3 can be divided into five groups, and the rows C4 can be divided into three groups, so that the photovoltaic modules are divided into multiple groups. Fig. 6 is a schematic diagram of each group of photovoltaic modules corresponding to fig. 5, and as shown in fig. 6, 14 groups of photovoltaic modules can be obtained by numbering each divided group of photovoltaic modules.
Optionally, iteratively searching the neighborhood of each group of components includes:
and iteratively searching two neighborhoods, four neighborhoods or eight neighborhoods of each group of components.
Illustratively, after the photovoltaic modules are grouped, neighborhood of each group of photovoltaic modules is searched, fig. 7 is a schematic neighborhood of one photovoltaic module provided by the embodiment of the present invention, fig. 8 is a schematic neighborhood of another photovoltaic module provided by the embodiment of the present invention, and referring to fig. 7, each group of photovoltaic modules with step size of 2 may search its four neighborhoods, for example, the four neighborhoods of the 9 th group of photovoltaic modules are the 8 th group of photovoltaic modules, the 10 th group of photovoltaic modules, the 5 th group of photovoltaic modules and the 14 th group of photovoltaic modules; referring to fig. 8, each group of photovoltaic modules with step size of 3 may search its neighborhood of class four, for example, the neighborhood of class four of the group 6 photovoltaic module is the group 5 photovoltaic module, the group 3 photovoltaic module, the group 10 photovoltaic module, and the group 11 photovoltaic module, and a plurality of group strings may be obtained by iteratively searching the neighborhood of each group of modules.
And S240, obtaining various string modes according to the arrangement positions of the group strings and the inverters.
Specifically, when the neighborhood of each group of components is searched in an iterative manner, the neighborhood can be searched horizontally or longitudinally, and a second neighborhood, a fourth neighborhood or an eight neighborhood of each group of components can be searched; and the arrangeable positions of the inverters are different, and the group strings are also divided differently, so that the photovoltaic module has a plurality of group string division modes, and each division mode can obtain a string mode, so that a plurality of string modes can be obtained according to the arrangeable positions of the group strings and the inverters.
For example, fig. 9 is a schematic diagram of dividing a group string according to an embodiment of the present invention, and fig. 10 is a schematic diagram of dividing another group string according to an embodiment of the present invention, as shown in fig. 9 and fig. 10, two group strings may be obtained by iteratively searching a neighborhood of each group of components, and different group string dividing manners may be obtained by different neighborhood searching manners, so that a plurality of string manners may be obtained, that is, fig. 9 and fig. 10 respectively show one string manner. It should be noted that, through different neighborhood search modes, a plurality of different group string division modes, that is, a plurality of string modes, may be obtained, and fig. 9 and 10 only show two string modes, but are not limited thereto.
And S250, respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each string of serial line mode and the distance of a jumper in each string of serial line mode, and taking the serial line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper as the optimal serial line arrangement.
For example, fig. 11 is a schematic diagram of manhattan distances from positive and negative terminals to inverter arrangeable positions in a serial line manner according to an embodiment of the present invention, as shown in fig. 11, a photovoltaic module may be divided into two group strings, for example, a starting point of a first group string is, for example, a1 st group photovoltaic module, an end point of the first group string is a 7 th group photovoltaic module, a connection line between the 1 st group photovoltaic module and the inverter arrangeable position 300 is L1, and a connection line between the 7 th group photovoltaic module and the inverter arrangeable position 300 is L2; the manhattan distance of the positive and negative terminals of the first string to the inverter arrangeable position 300 is the sum of the length of L1 and the length of L2; the starting point of the second group string is, for example, the 12 th group photovoltaic module, and the end point of the second group string is the 11 th group photovoltaic module; the wiring of the 12 th group of photovoltaic modules to the inverter arrangeable position 300 is L3, and the wiring of the 11 th group of photovoltaic modules to the inverter arrangeable position 300 is L4; the manhattan distance of the positive and negative terminals of the second group string to the inverter arrangeable position 300 is the sum of the length of L3 and the length of L4. The manhattan distance from the positive and negative terminals of the first string group to the inverter arrangeable position 300 is added to the manhattan distance from the positive and negative terminals of the second string group to the inverter arrangeable position 300, so that the manhattan distance from the positive and negative terminals to the inverter arrangeable position in the string line manner shown in fig. 11 can be obtained.
Fig. 12 is a schematic diagram of the manhattan distance from the positive and negative terminals to the inverter arrangeable position in another string manner provided by the embodiment of the present invention, the photovoltaic modules may be divided into two string sets, for example, the starting point of the first string set is, for example, the 1 st group photovoltaic module, the end point of the first string set is the 10 th group photovoltaic module, the connection between the 1 st group photovoltaic module and the inverter arrangeable position 300 is L5, and the connection between the 10 th group photovoltaic module and the inverter arrangeable position 300 is L6; the manhattan distance of the positive and negative terminals of the first string to the inverter arrangeable position 300 is the sum of the length of L5 and the length of L6; the starting point of the second group string is, for example, the 9 th group photovoltaic module, and the end point of the second group string is the 14 th group photovoltaic module; the wiring of the 9 th group of photovoltaic modules to the inverter arrangeable position 300 is L7, and the wiring of the 14 th group of photovoltaic modules to the inverter arrangeable position 300 is L8; the manhattan distance of the positive and negative terminals of the second group string to the inverter arrangeable position 300 is the sum of the length of L7 and the length of L8. The manhattan distance from the positive and negative terminals of the first string group to the inverter arrangeable position 300 is added to the manhattan distance from the positive and negative terminals of the second string group to the inverter arrangeable position 300, so that the manhattan distance from the positive and negative terminals to the inverter arrangeable position in the string line manner shown in fig. 12 can be obtained.
Fig. 11 and 12 only show two serial line modes, the photovoltaic module may further have other serial line modes, which are not limited herein, and a preferred serial line arrangement mode may be obtained by calculating a manhattan distance from the positive terminal and the negative terminal to a position where the inverter can be arranged in each serial line mode and a distance of the jumper line in each serial line mode, and arranging the serial line mode corresponding to the minimum value in the sum of the manhattan distance and the distance of the jumper line in each serial line mode as the optimum serial line, so that the serial line arrangement mode is shorter in wiring, and is beneficial to reducing the cable cost.
According to the technical scheme of the embodiment, the photovoltaic module can be divided into a plurality of areas according to the characteristics of the field where the photovoltaic module is located. Determining the ratio of the arrangement density of each regional component to the reference arrangement density, and taking the product of the ratio and the number of the reference inverters as the number of the inverters corresponding to each regional component; and determining the arrangeable positions of the inverters corresponding to the zone components according to the number of the inverters and the arrangement positions of the zone components so as to determine the optimal inverter position. Dividing the photovoltaic modules into a plurality of groups according to a preset step length; and iteratively searching the neighborhood of each group of components until the number of the photovoltaic components meets the preset string range, and obtaining a string. And then iteratively searching the neighborhoods of the rest photovoltaic modules until the number of the photovoltaic modules meets the preset string range, obtaining a string group again, and repeating the steps until all the photovoltaic modules are traversed, and obtaining a plurality of string groups. When the neighborhood of each group of components is searched in an iterative manner, the components can be searched transversely or longitudinally, and two neighborhoods, four neighborhoods or eight neighborhoods of each group of components can be searched; and the arrangeable positions of the inverters are different, and the group strings are divided differently, so that the photovoltaic module can have a plurality of group string division modes, each division mode can obtain a string mode, and therefore, a plurality of string modes can be obtained according to the arrangeable positions of the group strings and the inverters.
Fig. 13 is a flowchart of another photovoltaic module string arrangement determining method according to an embodiment of the present invention, and optionally, referring to fig. 13, the photovoltaic module string arrangement determining method includes:
and S310, dividing the photovoltaic module into a plurality of areas according to the field where the photovoltaic module is installed.
And S320, determining the arrangeable positions of the inverters corresponding to the regional components according to the arrangement density and the arrangement positions of the regional components.
S330, dividing the photovoltaic modules into a plurality of groups according to a preset step length, and iteratively searching the neighborhood of each group of modules to obtain a plurality of strings in a preset string range.
And S340, obtaining various string modes according to the arrangement positions of the group strings and the inverters.
And S350, determining coordinates of the positive terminal and the negative terminal in each string mode.
Specifically, there are a plurality of group strings in each string line mode, and the coordinates of the positive terminal and the negative terminal of each group string are determined to determine the coordinates of the positive terminal and the negative terminal in each string line mode. The coordinate system may be established according to actual conditions, for example, when the photovoltaic module is on a roof, the coordinate system may be established with a center of the roof as a coordinate origin, or may be established in other manners, which is not limited herein.
And S360, calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged and the distance of a jumper wire in each string of serial line mode according to the coordinates of the positive terminal and the negative terminal, and taking the serial line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper wire as the optimal serial line arrangement.
Illustratively, in a certain string, the coordinates of the positive terminal are (x1, y1) and the coordinates of the negative terminal are (x2, y2) and the coordinates of the inverter placeable position are (x3, y3), then the manhattan distance d1 from the positive terminal to the corresponding inverter placeable position is | x1-x3| + | y1-y3|, the manhattan distance d2 from the negative terminal to the corresponding inverter placeable position is | x2-x3| + | y2-y3|, and then the sum of d1 and d2 is the manhattan distance from the string to the corresponding inverter, according to which the manhattan distance from all strings to the inverter can be calculated, thereby determining the manhattan distance from the positive terminal to the inverter placeable position in a string-line manner. And adding the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each serial line mode and the distance of the jumper in each serial line mode to obtain the serial line length of each serial line mode. All the string lengths are compared, and the string mode corresponding to the minimum string length in all the string lengths is used as the optimal string arrangement mode, so that the optimal string arrangement can be realized, the cable length can be reduced, the series connection time of the photovoltaic modules can be shortened, and the string cost can be reduced.
According to the technical scheme of the embodiment, the coordinates of the positive terminal and the negative terminal of each group string are determined in the mode of each string line, so that the coordinates of the positive terminal and the negative terminal in the mode of each string line are determined. The manhattan distance from each set of strings to the inverter can be calculated according to the coordinates of the positive terminal and the negative terminal, so that the manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in the mode of each string line is determined. And adding the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each serial line mode and the distance of the jumper in each serial line mode to obtain the serial line length of each serial line mode. All the string lengths are compared, and the string mode corresponding to the minimum string length in all the string lengths is used as the optimal string arrangement mode, so that the optimal string arrangement can be realized, the cable length can be reduced, the series connection time of the photovoltaic modules can be shortened, and the string cost can be reduced.
Fig. 14 is a schematic structural diagram of a photovoltaic module serial line arrangement determining apparatus according to an embodiment of the present invention. As shown in fig. 14, the photovoltaic module serial line arrangement determining apparatus includes:
the inverter position determining module 410 is used for determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module;
the string mode determining module 420 is configured to determine a string mode of the photovoltaic module at each configurable position of the inverter according to the configurable position of the inverter;
and a serial line arrangement determining module 430, configured to calculate a manhattan distance from the positive terminal and the negative terminal to a position where the inverter can be arranged in each serial line mode and a distance of a jumper line in each serial line mode, respectively, and use a serial line mode corresponding to a minimum value in a sum of the manhattan distance and the jumper line distance as an optimal serial line arrangement.
Optionally, the inverter position determination module 410 comprises:
the area dividing unit is used for dividing the photovoltaic module into a plurality of areas according to the field where the photovoltaic module is installed;
and the inverter position determining unit is used for determining the arrangeable position of the inverter corresponding to each regional component according to the arrangement density and the arrangement position of each regional component.
Optionally, the inverter position determining unit is specifically configured to determine a ratio of the arrangement density of each regional component to a reference arrangement density, and use a product of the ratio and the number of reference inverters as the number of inverters corresponding to each regional component; and determining the arrangeable positions of the inverters corresponding to the zone components according to the number of the inverters and the arrangement positions of the zone components.
Optionally, the string mode determining module 420 includes:
the group string dividing unit is used for dividing the photovoltaic modules into a plurality of groups according to a preset step length, and iteratively searching the neighborhood of each group of modules to obtain a plurality of group strings within a preset group string range;
and the serial line mode determining unit is used for obtaining a plurality of serial line modes according to the group strings and the arrangeable positions of the inverters.
Optionally, the serial line arrangement determining module 430 includes:
the coordinate determination unit is used for determining the coordinates of the positive terminal and the negative terminal in each string of wire mode;
and a distance calculation unit for calculating a manhattan distance from the positive and negative terminals to an inverter arrangeable position based on coordinates of the positive and negative terminals.
The photovoltaic module serial line arrangement determining device provided by the embodiment of the invention can execute the photovoltaic module serial line arrangement determining method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and fig. 15 is a schematic structural diagram of an electronic device 10 that can be used to implement an embodiment of the present invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 15, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a Read Only Memory (ROM)12, a Random Access Memory (RAM)13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM)12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A number of components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, or the like; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 11 performs the various methods and processes described above, such as the photovoltaic module string placement determination method.
In some embodiments, the photovoltaic module string arrangement determination method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the photovoltaic module string arrangement determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the photovoltaic module string arrangement determination method by any other suitable means (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for determining the serial line arrangement of a photovoltaic module is characterized by comprising the following steps:
determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module;
determining the string mode of the photovoltaic modules at each arrangeable position of the inverter according to the arrangeable position of the inverter;
and respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each string of string line mode and the distance of a jumper in each string of string line mode, and taking the string line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper distance as the optimal string line arrangement.
2. The method for determining the serial line arrangement of the photovoltaic modules according to claim 1, wherein the determining the arrangeable positions of the inverters according to the installation site and the arrangement mode of the photovoltaic modules comprises the following steps:
dividing the photovoltaic module into a plurality of areas according to the site where the photovoltaic module is installed;
and determining the arrangeable position of the inverter corresponding to each regional component according to the arrangement density and the arrangement position of each regional component.
3. The method for determining the serial line arrangement of the photovoltaic modules according to claim 2, wherein determining the arrangeable position of the inverter corresponding to each regional module according to the arrangement density and the arrangement position of each regional module comprises:
determining the ratio of the arrangement density of each regional component to the reference arrangement density, and taking the product of the ratio and the number of the reference inverters as the number of the inverters corresponding to each regional component;
and determining the arrangeable positions of the inverters corresponding to the zone components according to the number of the inverters and the arrangement positions of the zone components.
4. The method for determining the serial line arrangement of the photovoltaic modules according to claim 1, wherein the step of determining the serial line mode of the photovoltaic modules at each arrangeable position of the inverter according to the arrangeable position of the inverter comprises the following steps:
dividing the photovoltaic modules into a plurality of groups according to a preset step length, and iteratively searching the neighborhood of each group of modules to obtain a plurality of groups within a preset group range;
and obtaining a plurality of string modes according to the group string and the arrangeable position of the inverter.
5. The method for determining the serial line arrangement of the photovoltaic modules according to claim 4, wherein the step of dividing the photovoltaic modules into a plurality of groups according to a preset step length comprises:
and dividing the photovoltaic modules into a plurality of groups according to a preset single step length or a preset combined step length.
6. The method for determining the serial line arrangement of the photovoltaic modules according to claim 4, wherein the step of iteratively searching the neighborhood of each group of the photovoltaic modules comprises the following steps:
and iteratively searching two neighborhoods, four neighborhoods or eight neighborhoods of each group of components.
7. The method for determining the serial line arrangement of the photovoltaic module according to claim 1, wherein the step of calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each serial line mode respectively comprises the following steps:
determining coordinates of the positive terminal and the negative terminal in each string of wire connection mode;
and calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged according to the coordinates of the positive terminal and the negative terminal.
8. A photovoltaic module serial line arrangement determining device is characterized by comprising:
the inverter position determining module is used for determining the arrangeable position of the inverter according to the installation site and the arrangement mode of the photovoltaic module;
the string mode determining module is used for determining the string mode of the photovoltaic module at each arrangeable position of the inverter according to the arrangeable position of the inverter;
and the serial line arrangement determining module is used for respectively calculating the Manhattan distance from the positive terminal and the negative terminal to the position where the inverter can be arranged in each serial line mode and the distance of a jumper in each serial line mode, and taking the serial line mode corresponding to the minimum value in the sum of the Manhattan distance and the jumper as the optimal serial line arrangement.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the photovoltaic module string arrangement determination method of any one of claims 1-7.
10. A computer-readable storage medium storing computer instructions for causing a processor to implement the method for determining a string arrangement of photovoltaic modules according to any one of claims 1 to 7 when the computer instructions are executed.
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