CN113285666A - Photovoltaic cable trough box arrangement design method - Google Patents

Photovoltaic cable trough box arrangement design method Download PDF

Info

Publication number
CN113285666A
CN113285666A CN202110635573.1A CN202110635573A CN113285666A CN 113285666 A CN113285666 A CN 113285666A CN 202110635573 A CN202110635573 A CN 202110635573A CN 113285666 A CN113285666 A CN 113285666A
Authority
CN
China
Prior art keywords
cable
row
array
length
follows
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
Application number
CN202110635573.1A
Other languages
Chinese (zh)
Other versions
CN113285666B (en
Inventor
黄珅
汤晓刚
曾海兵
汪晓光
丁波
张天忠
司俊鹏
黄庆
李昆梅
罗正帮
胡祖伟
王浩
张贇
张威
刘翀
权江伟
陈泽康
刘啸
陈静
赵玥
吴海燕
方智取
贾添娇
张博扬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Jidian New Energy Co ltd
State Grid Anhui Electric Power Co Ltd
Anhui Huadian Engineering Consulting and Design Co Ltd
Chuzhou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Original Assignee
Anhui Jidian New Energy Co ltd
State Grid Anhui Electric Power Co Ltd
Anhui Huadian Engineering Consulting and Design Co Ltd
Chuzhou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Jidian New Energy Co ltd, State Grid Anhui Electric Power Co Ltd, Anhui Huadian Engineering Consulting and Design Co Ltd, Chuzhou Power Supply Co of State Grid Anhui Electric Power Co Ltd filed Critical Anhui Jidian New Energy Co ltd
Priority to CN202110635573.1A priority Critical patent/CN113285666B/en
Publication of CN113285666A publication Critical patent/CN113285666A/en
Application granted granted Critical
Publication of CN113285666B publication Critical patent/CN113285666B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H02S40/30—Electrical components
    • H02S40/36—Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
    • 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
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • 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

Landscapes

  • Photovoltaic Devices (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The invention relates to a photovoltaic cable trough box arrangement design method, which overcomes the defect that the cable length is difficult to analyze when the photovoltaic cable trough box is arranged and designed in the prior art. The invention comprises the following steps: designing a cable groove box arrangement strategy: arranging an array of cable groove boxes according to the position of the combiner box; calculation of total cable length: and calculating the total length of the cables required by the array according to the arrangement array of the cable groove boxes. The invention plans the line wiring plane layout general diagram form, realizes the optimization of the traditional north-south horizontal optimization layout method, provides a new layout form and also provides a calculation method of the length of the electric (wire) cable.

Description

Photovoltaic cable trough box arrangement design method
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a photovoltaic cable trough box arrangement design method.
Background
The photovoltaic cable is various in the form of arranging in photovoltaic factory, generally mostly two-dimensional plane lays, and a few mountain regions adopt three-dimensional solid to lay, and pile foundation around the general connection of laying of its characteristics main expression at the cable groove box lays finally through the groove box to collection flow box or inverter in, its requirement that basically satisfies the wiring form of arranging in photovoltaic factory.
With the increase of the flat-price internet access requirement of a photovoltaic project, factors such as cost reduction, cost reduction and the like are generally considered during photovoltaic plant area construction, the requirement on the material usage of the photovoltaic plant area is more strict, and the problem that how to reduce the investment cost to the maximum extent of the length of a cable in the photovoltaic plant area is needed to be solved in all photovoltaic construction at present is solved.
As shown in fig. 1, the existing cable trough boxes are basically arranged in a north-south arrangement, which has the advantages of simple arrangement mode and the disadvantage of being incapable of effectively reducing the use of cable materials. And from the economic consideration, the use of the cable material is reduced on the premise of not influencing the arrangement of the photovoltaic plant area, so that the investment cost can be effectively reduced.
Therefore, the use of cables is reduced, the reasonable layout of the photovoltaic factory is matched, and the design of the photovoltaic factory layout is a prominent problem. Therefore, how to provide a photovoltaic cable trough box arrangement design method is comprehensively considered in photovoltaic plant layout design, and the technical problem that the length of the used cable is needed to be solved urgently can be analyzed.
Disclosure of Invention
The invention aims to solve the defect that the cable length is difficult to analyze when a photovoltaic cable trough box is arranged and designed in the prior art, and provides a photovoltaic cable trough box arrangement design method to solve the problem.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a photovoltaic cable trough box arrangement design method comprises the following steps:
designing a cable groove box arrangement strategy: arranging an array of cable groove boxes according to the position of the combiner box;
calculation of total cable length: and calculating the total length of the cables required by the array according to the arrangement array of the cable groove boxes.
The method for designing the cable groove box arrangement strategy comprises the following steps:
setting N rows and M columns of the arrangement array;
setting the bus box to be positioned at the central position of the arrangement array, namely, the bus box is arranged on the mth column of the nth row of the arrangement array;
four bus cables are arranged outwards from the center of the arrangement array, a plurality of bus photovoltaic panels are connected to the four bus cables in series, and the four bus cables are respectively positioned in four quadrants of the arrangement array;
distributing branch photovoltaic panels in each quadrant of the array, located in the range of the bus cable and the X axis, and connecting the branch photovoltaic panels with the bus photovoltaic panels in the same row after being transversely connected in series in the same row; and arranging branch photovoltaic panels positioned in the range of the bus cable and the Y axis in each quadrant of the array, and connecting the bus photovoltaic panels in the same row after longitudinally connecting the branch photovoltaic panels in the same row in series.
The calculation of the total cable length comprises the following steps:
the cable trough box is arranged in a square array, the arrangement array has N rows and M columns, M is equal to N is equal to 2M +1, wherein M is equal to [0, N), N is a natural number, alpha is a column spacing, beta is a row spacing,
Figure BDA0003105037210000021
based on the first quadrant, when j is less than or equal to i in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when the cable length is located at the upper left corner of the selected matrix, namely in the jth row and ith column, i < j, the length of the cable used for the jth row and ith column is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure BDA0003105037210000022
the total length of the cable used to obtain the square array from symmetry is calculated as follows:
Figure BDA0003105037210000031
the calculation of the total cable length comprises the following steps:
the arrangement array of the cable trough boxes is a circular array, the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, and M is equal to H according to the symmetry principle;
assuming that the number of square matrices in the largest square in the circular array is 2M × 2M, and 2N +2M is taken as M is H, M, N is ∈ [0, N), N is a natural number, and α is a column pitch, β is a row pitch,
Figure BDA0003105037210000032
based on the first in-quadrant array, when j is not less than i and not more than m in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when j is more than or equal to i and less than or equal to m in the jth row of the ith row, the length of the cable used for the ith row of the jth row is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure BDA0003105037210000033
when m is more than j and i is more than or equal to m + n in the jth row of the ith row, the length of the cable used in the jth row and the ith row is obtained as follows:
Lij＝(i-j)α+jγ，
when m is more than i and less than j and less than or equal to m + n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in a quarter circle, the length of the wire used for the square matrix is as follows:
Figure BDA0003105037210000034
and according to the symmetry, the total length of the cables used for one array is obtained as follows:
Figure BDA0003105037210000035
the calculation of the total cable length comprises the following steps:
the arrangement array of the cable trough boxes is a runway-shaped array consisting of two symmetrical semi-circles and a rectangle, and the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, wherein H is 2n, and M is 2M1+2m2，m1＝n，m1,m2N belongs to [0, N), N is a natural number,and alpha is the column pitch, beta is the row pitch,
Figure BDA0003105037210000041
based on the first quadrant, when j is not less than i and not more than n in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when i is more than j and less than or equal to n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
the cable length in the first quadrant rectangle range is therefore:
Figure BDA0003105037210000042
when the ith column is in the jth row, n is more than j and i is less than or equal to m1+m2When the constraint condition of the square matrix in the first quadrant is set, for the ith row and the ith column function psi (x, y), the function j & beta & lt & ltpsi (i & alpha) is established;
according to the above formula: the cable lengths outside the first quadrant rectangle are as follows:
Figure BDA0003105037210000043
and then according to the symmetry, obtaining the total length of the cables used by an array:
Figure BDA0003105037210000044
the calculation of the total cable length comprises the following steps:
the arrangement array of the cable trough boxes is an irregular-shaped array, and the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, wherein H is n1+n2,，M＝m1+m2Where α is the square matrix pitch, β is the square matrix row pitch,
Figure BDA0003105037210000045
based on the first quadrant, the constraint condition of the square matrix in the first quadrant is described as follows:
function Ψ for i-th row and i-th column1(x, y) and Ψ3(x, y) let Ψ1(x, y) and Ψ3The intersection of (x, y) is (x)11,y11) Then the function phi can be used1(x, y) represents the boundary constraint of the array in the first quadrant, where:
Figure BDA0003105037210000046
by using
Figure BDA0003105037210000047
Represents phi1The inverse function of (x, y),
when in use
Figure BDA0003105037210000048
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(j-i)β+iγ，
when in use
Figure BDA0003105037210000051
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(i-j)α+jγ，
the cable length in the first quadrant rectangle range is therefore:
Figure BDA0003105037210000052
similarly, the conditions in the second, third and fourth quadrants are respectively found as follows:
respectively exist function phi2(x,y)、Φ3(x,y)、Φ4(x, y) is the boundary condition of the square matrix in the corresponding quadrant, and the inverse functions of the above functions are respectively
Figure BDA0003105037210000053
The lengths of the obtained cables in the second quadrant, the third quadrant and the fourth quadrant are respectively as follows:
Figure BDA0003105037210000054
Figure BDA0003105037210000055
Figure BDA0003105037210000056
and the length of the cable at the coordinate axis is added, so that the total length of the cable used by one array is obtained as follows:
Figure BDA0003105037210000057
advantageous effects
Compared with the prior art, the photovoltaic cable trough box arrangement design method plans the line wiring plane arrangement general diagram form, realizes the optimization of the traditional north-south horizontal optimization arrangement method, provides a new arrangement form and also provides a calculation method of the length of the electric (wire) cable.
In the engineering design feasibility research stage, the method can be used for carrying out multi-scheme square matrix division on the plots in the photovoltaic plant area by combining with the actual terrain, optimizing the design and arrangement scheme, achieving the aim of saving the length of the cable and finally achieving the effect of reducing the investment cost.
Drawings
Fig. 1 is a layout structure diagram of a photovoltaic cable trough box in the prior art;
FIG. 2 is a sequence diagram of the method of the present invention;
fig. 3 is a diagram of a photovoltaic cable trough box arrangement structure according to a first embodiment of the invention;
FIG. 4 is a diagram of a photovoltaic cable trough box arrangement according to a second embodiment of the present invention;
fig. 5 is a view showing the arrangement structure of a photovoltaic cable trough according to a third embodiment of the invention;
fig. 6 is a diagram of a photovoltaic cable trough box arrangement according to a fourth embodiment of the invention;
the photovoltaic power generation system comprises a 1-junction box, a 2-bus cable, a 3-bus photovoltaic panel and a 4-branch photovoltaic panel.
Detailed Description
So that the manner in which the above recited features of the present invention can be understood and readily understood, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings, wherein:
as shown in fig. 2, the method for designing the arrangement of the photovoltaic cable trough box according to the present invention includes the following steps:
in the first step, a cable groove box arrangement strategy is designed. The arrangement array of the cable trough boxes is designed according to the position of the combiner box 1. The conventional arrangement usually adopts east-west or north-south arrangement for the cable trough box path for convenient construction, but the increase of the cable length not only increases the use amount of the trough box and the cable, but also increases the loss amount of the cable in photovoltaic power generation. The method comprises the following specific steps:
(1) the arrangement array is set to have N rows and M columns.
(2) The bus bar box 1 is set to be located at the center position of the arrangement array, that is, the bus bar box 1 is arranged at the mth column of the nth row of the arrangement array.
(3) Four bus cables 2 are arranged outwards from the central position of the arrangement array, the bus cables 2 are photovoltaic trough box connecting cables and are collecting cables, the central position is used as an original point, and the four bus cables 2 are respectively positioned in four quadrants divided in the direction of the arrangement array X, Y. The four bus cables 2 are all connected with a plurality of bus photovoltaic panels 3 in series, the bus photovoltaic panels 3 and the branch photovoltaic panels 4 are the same photovoltaic group strings, the bus photovoltaic panels 3 play roles in cable series connection and collection and photovoltaic panel installation, and the branch photovoltaic panels 4 play roles in wire connection and photovoltaic panel installation. Branching photovoltaic panel 4
The trough boxes in each quadrant (a first quadrant, a second quadrant, a third quadrant or a fourth quadrant) of the array are divided into two areas through the bus cables 2, namely the areas of the bus cables 2 and the X axis and the areas of the bus photovoltaic panels 3 and the Y axis, and the connecting structures of the two areas are different, so that the cables in the quadrants are laid to the combiner box in a scattering mode, the distance from the cables to the combiner box 1 is shortened, and the laying amount of the overall cables and the trough boxes is reduced.
The branching photovoltaic panels 4 are multiple, wherein the branching photovoltaic panels 4 located in the range (area) of the bus cable 2 and the X axis are connected with the bus photovoltaic panels 3 in the same row (X axis direction) after being connected in series in the same horizontal row (X axis direction), so that the connection with the bus cable 2 is realized.
The branching photovoltaic panels 4 located in the range (area) of the bus cable 2 and the Y axis (longitudinal direction) are connected with the bus photovoltaic panels 3 in the same row (Y axis direction) after being connected in series in the same row (Y axis direction), so that the connection with the bus cable 2 is realized.
In practical application, the X-axis and the Y-axis of the photovoltaic array are used as equipment transportation channels, photovoltaic series connection is not erected for the later maintenance channel, but photovoltaic series connection can also be erected on the X-axis and the Y-axis of the photovoltaic array according to needs (the erection of the photovoltaic series connection is illustrated in fig. 3-6). If photovoltaic series connection is required to be erected on the X axis and the Y axis, two bus cables are equivalently extended from the X axis direction and the Y axis direction of the combiner box 1, and photovoltaic plates on the bus cables are connected in series.
And secondly, calculating the total length of the cable: and calculating the total length of the cables required by the array according to the arrangement array of the cable groove boxes. The invention relates to a method for calculating the total length of a cable, which mainly simplifies the calculation of different cabling modes according to the symmetry of a square matrix, calculates the length of the cable on each quadrant through the same thought for the general square matrix cable without symmetry, and then sums up to obtain the total length of the cable.
As a first embodiment of the present invention, as shown in fig. 3, when the arrangement array of the cable tray is a square array.
Arranged in an arrayThere are N rows and M columns, and M ═ N ═ 2M +1, where M ∈ [0, N), N is a natural number, α is the column pitch, β is the row pitch,
Figure BDA0003105037210000071
based on the first quadrant, when j is less than or equal to i in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when the cable length is located at the upper left corner of the selected matrix, namely in the jth row and ith column, i < j, the length of the cable used for the jth row and ith column is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure BDA0003105037210000081
the total length of the cable used to obtain the square array from symmetry is calculated as follows:
Figure BDA0003105037210000082
as a second embodiment of the present invention, as shown in fig. 4, when the arrangement array of the cable tray is a circular array.
Setting a photovoltaic cable trough box arrangement array to have H rows and M columns, wherein the M is H according to the symmetry principle;
assuming that the number of square matrices in the largest square in the circular array is 2M × 2M, and 2N +2M is taken as M is H, M, N is ∈ [0, N), N is a natural number, and α is a column pitch, β is a row pitch,
Figure BDA0003105037210000083
based on the first in-quadrant array, when j is not less than i and not more than m in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when j is more than or equal to i and less than or equal to m in the jth row of the ith row, the length of the cable used for the ith row of the jth row is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure BDA0003105037210000084
when m is more than j and i is more than or equal to m + n in the jth row of the ith row, the length of the cable used in the jth row and the ith row is obtained as follows:
Lij＝(i-j)α+jγ，
when m is more than i and less than j and less than or equal to m + n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in a quarter circle, the length of the wire used for the square matrix is as follows:
Figure BDA0003105037210000091
and according to the symmetry, the total length of the cables used for one array is obtained as follows:
Figure BDA0003105037210000092
as a third embodiment of the present invention, as shown in fig. 5, the cable trough box arrangement array is a racetrack array consisting of two symmetrical semi-circles and a rectangle.
Setting the photovoltaic cable trough box arrangement array to have H rows and M columns, wherein H is 2n, and M is 2M1+2m2，m1＝n，m1,m2N belongs to [0, N), N is a natural number, alpha is a column spacing, beta is a row spacing,
Figure BDA0003105037210000093
based on the first quadrant, when j is not less than i and not more than n in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when i is more than j and less than or equal to n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
the cable length in the first quadrant rectangle range is therefore:
Figure BDA0003105037210000094
when the ith column is in the jth row, n is more than j and i is less than or equal to m1+m2When the constraint condition of the square matrix in the first quadrant is set, for the ith row and the ith column function psi (x, y), the function j & beta & lt & ltpsi (i & alpha) is established;
according to the above formula: the cable lengths outside the first quadrant rectangle are as follows:
Figure BDA0003105037210000095
and then according to the symmetry, obtaining the total length of the cables used by an array:
Figure BDA0003105037210000096
as a fourth embodiment of the present invention, as shown in fig. 6, when the arrangement array of the cable tray is an irregular-shaped array.
Setting a photovoltaic cable trough box arrangement array to have H rows and M columns, wherein H is n1+n2,，M＝m1+m2Where α is the square matrix pitch, β is the square matrix row pitch,
Figure BDA0003105037210000101
based on the first quadrant, the constraint condition of the square matrix in the first quadrant is described as follows:
function Ψ for i-th row and i-th column1(x, y) and Ψ3(x, y) let Ψ1(x, y) and Ψ3The intersection of (x, y) is (x)11,y11) Then the function phi can be used1(x, y) represents the boundary constraint of the array in the first quadrant, where:
Figure BDA0003105037210000102
by using
Figure BDA0003105037210000103
Represents phi1The inverse function of (x, y),
when in use
Figure BDA0003105037210000104
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(j-i)β+iγ，
when in use
Figure BDA0003105037210000105
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(i-j)α+jγ，
the cable length in the first quadrant rectangle range is therefore:
Figure BDA0003105037210000106
similarly, the conditions in the second, third and fourth quadrants are respectively found as follows:
respectively exist function phi2(x,y)、Φ3(x,y)、Φ4(x, y) is the boundary condition of the square matrix in the corresponding quadrant, and the inverse functions of the above functions are respectively
Figure BDA0003105037210000107
The lengths of the obtained cables in the second quadrant, the third quadrant and the fourth quadrant are respectively as follows:
Figure BDA0003105037210000108
Figure BDA0003105037210000109
Figure BDA00031050372100001010
and the length of the cable at the coordinate axis is added, so that the total length of the cable used by one array is obtained as follows:
Figure BDA0003105037210000111
the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A photovoltaic cable trough box arrangement design method is characterized by comprising the following steps:
11) designing a cable groove box arrangement strategy: designing an arrangement array of the cable trough boxes according to the position of the combiner box (1);
12) calculation of total cable length: and calculating the total length of the cables required by the array according to the arrangement array of the cable groove boxes.
2. The method for designing a photovoltaic cable trough according to claim 1, wherein the strategy for designing the cable trough comprises the following steps:
21) setting N rows and M columns of the arrangement array;
22) setting the bus box (1) to be positioned at the central position of the arrangement array, namely, the bus box (1) is arranged on the mth column of the n-th row of the arrangement array;
23) four bus cables (2) are arranged outwards from the center of the arrangement array, a plurality of bus photovoltaic panels (3) are connected to the four bus cables (2) in series, and the four bus cables (2) are respectively positioned in four quadrants of the arrangement array;
arranging branch photovoltaic panels (4) which are positioned in the range of the bus cable (2) and the X axis in each quadrant of the array, and connecting the same row of the branch photovoltaic panels with the bus photovoltaic panels (3) in the same row after the same row of the branch photovoltaic panels is transversely connected in series; and in each quadrant of the array, the branch photovoltaic panels (4) positioned in the range of the bus cable (2) and the Y axis are connected with the bus photovoltaic panels (3) in the same row after the same row is longitudinally connected in series.
3. The photovoltaic cable trough box arrangement design method according to claim 1, wherein the calculation of the total cable length comprises the following steps:
31) the cable trough box is arranged in a square array, the arrangement array has N rows and M columns, M is equal to N is equal to 2M +1, wherein M is equal to [0, N), N is a natural number, alpha is a column spacing, beta is a row spacing,
Figure FDA0003105037200000011
32) based on the first quadrant, when j is less than or equal to i in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when the cable length is located at the upper left corner of the selected matrix, namely in the jth row and ith column, i < j, the length of the cable used for the jth row and ith column is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure FDA0003105037200000021
the total length of the cable used to obtain the square array from symmetry is calculated as follows:
Figure FDA0003105037200000022
4. the photovoltaic cable trough box arrangement design method according to claim 1, wherein the calculation of the total cable length comprises the following steps:
41) the arrangement array of the cable trough boxes is a circular array, the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, and M is equal to H according to the symmetry principle;
assuming that the number of square matrices in the largest square in the circular array is 2M × 2M, and 2N +2M is taken as M is H, M, N is ∈ [0, N), N is a natural number, and α is a column pitch, β is a row pitch,
Figure FDA0003105037200000023
42) based on the first in-quadrant array, when j is not less than i and not more than m in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when j is more than or equal to i and less than or equal to m in the jth row of the ith row, the length of the cable used for the ith row of the jth row is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in the quarter matrix, the length of the cables used:
Figure FDA0003105037200000024
when m is more than j and i is more than or equal to m + n in the jth row of the ith row, the length of the cable used in the jth row and the ith row is obtained as follows:
Lij＝(i-j)α+jγ，
when m is more than i and less than j and less than or equal to m + n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
according to the above formula: in a quarter circle, the length of the wire used for the square matrix is as follows:
Figure FDA0003105037200000025
and according to the symmetry, the total length of the cables used for one array is obtained as follows:
Figure FDA0003105037200000026
5. the photovoltaic cable trough box arrangement design method according to claim 1, wherein the calculation of the total cable length comprises the following steps:
51) the arrangement array of the cable trough boxes is a runway-shaped array consisting of two symmetrical semi-circles and a rectangle, and the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, wherein H is 2n, and M is 2M1+2m2，m1＝n，m1,m2N belongs to [0, N), N is a natural number, alpha is a column spacing, beta is a row spacing,
Figure FDA0003105037200000031
52) based on the first quadrant, when j is not less than i and not more than n in the jth row of the ith row, the length of the cable used in the jth row and the ith column is obtained as follows:
Lij＝(i-j)α+jγ，
when i is more than j and less than or equal to n in the ith row and the jth line, the length of the cable used in the jth row and the jth line is obtained as follows:
Lij＝(j-i)β+iγ，
the cable length in the first quadrant rectangle range is therefore:
Figure FDA0003105037200000032
when the ith column is in the jth row, n is more than j and i is less than or equal to m1+m2When the constraint condition of the square matrix in the first quadrant is set, for the ith row and the ith column function psi (x, y), the function j & beta & lt & ltpsi (i & alpha) is established;
according to the above formula: the cable lengths outside the first quadrant rectangle are as follows:
Figure FDA0003105037200000033
and then according to the symmetry, obtaining the total length of the cables used by an array:
Figure FDA0003105037200000034
6. the photovoltaic cable trough box arrangement design method according to claim 1, wherein the calculation of the total cable length comprises the following steps:
61) the arrangement array of the cable trough boxes is an irregular-shaped array, and the arrangement array of the photovoltaic cable trough boxes is set to have H rows and M columns, wherein H is n1+n2,，M＝m1+m2Where α is the square matrix pitch, β is the square matrix row pitch,
Figure FDA0003105037200000035
62) based on the first quadrant, the constraint condition of the square matrix in the first quadrant is described as follows:
function Ψ for i-th row and i-th column1(x, y) and Ψ3(x, y) let Ψ1(x, y) and Ψ3The intersection of (x, y) is (x)11,y11) Then the function phi can be used1(x, y) represents the boundary constraint of the array in the first quadrant, where:
Figure FDA0003105037200000041
by using
Figure FDA00031050372000000410
Represents phi1The inverse function of (x, y),
when in use
Figure FDA0003105037200000042
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(j-i)β+iγ，
when in use
Figure FDA0003105037200000043
And then, the length of the cable used for the j row and the i column is obtained as follows:
Lij＝(i-j)α+jγ，
the cable length in the first quadrant rectangle range is therefore:
Figure FDA0003105037200000044
similarly, the conditions in the second, third and fourth quadrants are respectively found as follows:
respectively exist function phi2(x,y)、Φ3(x,y)、Φ4(x, y) is the boundary condition of the square matrix in the corresponding quadrant, and the inverse functions of the above functions are respectively
Figure FDA0003105037200000045
The lengths of the obtained cables in the second quadrant, the third quadrant and the fourth quadrant are respectively as follows:
Figure FDA0003105037200000046
Figure FDA0003105037200000047
Figure FDA0003105037200000048
and the length of the cable at the coordinate axis is added, so that the total length of the cable used by one array is obtained as follows:
Figure FDA0003105037200000049
CN202110635573.1A 2021-06-08 2021-06-08 Layout design method for photovoltaic cable trough box Active CN113285666B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110635573.1A CN113285666B (en) 2021-06-08 2021-06-08 Layout design method for photovoltaic cable trough box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110635573.1A CN113285666B (en) 2021-06-08 2021-06-08 Layout design method for photovoltaic cable trough box

Publications (2)

Publication Number Publication Date
CN113285666A true CN113285666A (en) 2021-08-20
CN113285666B CN113285666B (en) 2023-11-07

Family

ID=77283707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110635573.1A Active CN113285666B (en) 2021-06-08 2021-06-08 Layout design method for photovoltaic cable trough box

Country Status (1)

Country Link
CN (1) CN113285666B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1390637A (en) * 1972-11-27 1975-04-16 Stone Platt Crawley Ltd Photovoltaic cells
US20100237703A1 (en) * 2009-03-17 2010-09-23 Michael Joseph Stern Photovoltaic power plant with minimized power collection losses
US20110140528A1 (en) * 2009-12-15 2011-06-16 First Solar, Inc. Cable bus
CN106503839A (en) * 2016-10-14 2017-03-15 上海电力学院 A kind of marine wind electric field annular current collection network hierarchy planing method
CN207218630U (en) * 2017-09-13 2018-04-10 中机华信诚电力工程有限公司 A kind of linear concatenation cable architecture arranged side by side applied to photovoltaic group
CN112287529A (en) * 2020-10-19 2021-01-29 合肥阳光新能源科技有限公司 Automatic photovoltaic array arrangement method and automatic photovoltaic power station arrangement method
CN112487626A (en) * 2020-11-23 2021-03-12 合肥阳光新能源科技有限公司 Photovoltaic power station wiring method and device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1390637A (en) * 1972-11-27 1975-04-16 Stone Platt Crawley Ltd Photovoltaic cells
US20100237703A1 (en) * 2009-03-17 2010-09-23 Michael Joseph Stern Photovoltaic power plant with minimized power collection losses
US20110140528A1 (en) * 2009-12-15 2011-06-16 First Solar, Inc. Cable bus
CN106503839A (en) * 2016-10-14 2017-03-15 上海电力学院 A kind of marine wind electric field annular current collection network hierarchy planing method
CN207218630U (en) * 2017-09-13 2018-04-10 中机华信诚电力工程有限公司 A kind of linear concatenation cable architecture arranged side by side applied to photovoltaic group
CN112287529A (en) * 2020-10-19 2021-01-29 合肥阳光新能源科技有限公司 Automatic photovoltaic array arrangement method and automatic photovoltaic power station arrangement method
CN112487626A (en) * 2020-11-23 2021-03-12 合肥阳光新能源科技有限公司 Photovoltaic power station wiring method and device

Also Published As

Publication number Publication date
CN113285666B (en) 2023-11-07

Similar Documents

Publication Publication Date Title
JP6802328B2 (en) Half cut module
CN109088580B (en) Slope photovoltaic power station transformation design method
US10511250B2 (en) Solar-collector roofing assembly
CN102383551A (en) Solar off-grid power station roof
CN113285666A (en) Photovoltaic cable trough box arrangement design method
CN203514953U (en) Photovoltaic fence
CN217769413U (en) Heavy-current bus duct of wind driven generator
CN107370449A (en) Without steel construction overhead type photovoltaic module support system and electrical power transmission system
CN101769081A (en) Co-construction and sharing type triangle-tube tower communication base station and setting method thereof
US20130291922A1 (en) Composite Modular Power Generating Systems and Methods
WO2020224617A1 (en) Tree-shaped photovoltaic power generation apparatus
CN115270417A (en) Optimization method and system for BIPV system
CN211351260U (en) Three-layer three-dimensional cable channel for indoor transformer substation
CN210866210U (en) Photovoltaic module
CN211908389U (en) Virtual power plant system for distributed photovoltaic power station
CN211257509U (en) Building roof truss, building roof, supporting structure of building and building
CN207218630U (en) A kind of linear concatenation cable architecture arranged side by side applied to photovoltaic group
CN207283496U (en) A kind of photovoltaic module connection structure
CN117521220B (en) Openroads-based BIM design method for photovoltaic power station
CN201605835U (en) Co-established and shared three-pipe tower communication base station
CN210201430U (en) 16 return circuits 220kV of transformer substation make an uproar structure of being qualified for next round of competitions that puts on stilts
CN205488168U (en) Cluster is organized to photovoltaic that adopts jumper connection mode to connect
CN204531565U (en) Shaft tower is arranged with bar in the three loop line roads for three direction corners
CN218449264U (en) Layered multi-pass bridge frame assembling device
KR20200041052A (en) Solar cell module

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant