CN112487626B

CN112487626B - Photovoltaic power station wiring method and device

Info

Publication number: CN112487626B
Application number: CN202011324548.3A
Authority: CN
Inventors: 杨雷; 王�忠; 陆克华; 周辉; 宋平
Original assignee: Sungrow Renewables Development Co Ltd
Current assignee: Sungrow Renewables Development Co Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2024-02-27
Anticipated expiration: 2040-11-23
Also published as: CN112487626A

Abstract

The embodiment of the invention discloses a photovoltaic power station wiring method and device. The photovoltaic power station comprises a first outfitting device and a plurality of second outfitting devices; the photovoltaic power station wiring method comprises the following steps: acquiring position information of a first outfit device and a second outfit device in a photovoltaic power station, and establishing a coordinate system by taking the position of the first outfit device as an origin, so that the second outfit device is distributed in the coordinate system; dividing a coordinate system into a plurality of areas, and wiring each area according to a preset wiring rule corresponding to each area so that a second outfit device in each area is connected to a first outfit device; when the wiring pattern between the second outfits of the adjacent areas can be optimized, the wiring pattern between the second outfits of the adjacent areas is optimized to minimize the wiring distance. Compared with the prior art, the technical scheme of the invention has wider application scene, is beneficial to improving the wiring design efficiency of the photovoltaic power station and reducing the wiring and construction cost.

Description

Photovoltaic power station wiring method and device

Technical Field

The embodiment of the invention relates to the technical field of photovoltaic power stations, in particular to a photovoltaic power station wiring method and device.

Background

Photovoltaic power plants can be divided into centralized photovoltaic power plants and string photovoltaic power plants. For a centralized photovoltaic power station, more photovoltaic modules are collected by a centralized inverter, and a combiner box is generally configured between the photovoltaic modules and the centralized inverter; for the string type photovoltaic power station, the string type inverter collects fewer photovoltaic modules, and the general photovoltaic modules are directly connected to the inverter. The wiring mode between the junction box and the inverter in the centralized photovoltaic power station and the wiring mode between the inverter and the box transformer in the serial photovoltaic power station are not provided with exact optimal schemes, particularly the problems that the actual wiring is inconsistent with the construction drawing frequently occur in the field construction when the field construction condition is too many because of uncontrollable factors of the mountain power station, and a certain deviation is generated in the initial cost evaluation of the power station design.

In the prior art, the wiring mode of the photovoltaic power station generally calculates the distance between each combiner box and each inverter manually, and selects the combination with the minimum sum of the distances between the combiner boxes and the inverters, so as to design the wiring mode between the combiner boxes and the inverters. However, the manual design is extremely inefficient, greatly affecting the engineering progress of the photovoltaic power plant.

Disclosure of Invention

The embodiment of the invention provides a photovoltaic power station wiring method and device, which are used for improving the design efficiency of the photovoltaic power station wiring and reducing the wiring and construction cost.

In a first aspect, an embodiment of the present invention provides a method for wiring a photovoltaic power plant, where the photovoltaic power plant includes a first outfitting device and a plurality of second outfitting devices;

the photovoltaic power station wiring method comprises the following steps:

acquiring position information of a first outfit device and a second outfit device in a photovoltaic power station, and establishing a coordinate system by taking the position of the first outfit device as an origin, so that the second outfit device is distributed in the coordinate system;

dividing the coordinate system into a plurality of areas, and wiring each area according to a preset wiring rule corresponding to each area so that the second outfit device in each area is connected to the first outfit device;

when the wiring manner between the second outfits of the adjacent areas can be optimized, the wiring manner between the second outfits of the adjacent areas is optimized so as to minimize the wiring distance.

Optionally, wiring each area according to a preset wiring rule corresponding to each area, so that the second outfit device in each area is connected to the first outfit device, including:

Sorting the second provisioning means in each of the zones from far to near according to the distance between the second provisioning means and origin in the zone;

and determining the second outfit devices or the first outfit devices connected with each second outfit device in turn according to the ordering of the second outfit devices and the preset wiring rules corresponding to the areas.

Optionally, the region in the coordinate system includes a first preset region;

according to the sequence of the second outfit devices and the preset wiring rules corresponding to the areas, determining the second outfit device or the first outfit device connected with each second outfit device in turn, wherein the method comprises the following steps:

if the second outfit device with the ith rank in the first preset area and the second outfit device closest to the second outfit device can carry out Manhattan distance type wiring, connecting the second outfit device with the second outfit device according to the Manhattan distance type wiring;

determining an intersection point of wiring paths between the second outfit device ranked in the ith and the second outfit device nearest to the intersection point, judging whether the intersection point and the second outfit device nearest to the intersection point in the area can perform Manhattan distance type wiring, and performing wiring according to a judging result;

The first preset area comprises n second outfitting devices, i is more than or equal to 1 and less than or equal to n, and the second outfitting devices in the sequence of n are connected with an origin.

Optionally, the method further comprises:

if the second outfit device with the i-th rank in the first preset area and the second outfit device closest to the second outfit device cannot carry out Manhattan distance wiring, connecting the second outfit device with the i-th rank in the first preset area by using a linear wiring;

and judging whether the second equipment device which is ranked in the ith, the second equipment device which is closest to the second equipment device and is closest to the origin, and other second equipment devices which are closest to the second equipment device in the area can perform Manhattan distance type wiring, and wiring according to a judging result.

Optionally, the region in the coordinate system includes a second preset region;

setting a ray region of a preset angle range by taking the position of the second outfit device of the k-th sequence in the second preset region as a vertex;

If the second outfit device closest to the k-th outfit device exists in the ray area of the second outfit device, connecting the two devices by a linear wire;

judging whether the second outfit device closest to the ray area of the k+1 second outfit device exists or not, and wiring according to a judging result;

wherein the second preset area comprises m second outfitting devices, and k is more than or equal to 1 and less than or equal to m.

Optionally, the method further comprises:

if the second outfit closest to the second outfit is not present in the ray area of the k-th second outfit, determining the second outfit closest to the ray area of the k-th second outfit, calculating a first distance between the k-th second outfit and an origin, and a first length of a trace between the second outfit closest to the ray area of the k-th second outfit and the origin;

if the ratio of the first distance to the first length is smaller than a preset threshold value, connecting the second outfit device with the k-th sorting device with an origin;

and if the ratio of the first distance to the first length is greater than or equal to a preset threshold value, connecting the second outfit device with the k-th ranking with the second outfit device closest to the ray area.

Optionally, when the wiring manner between the second outfits of the adjacent areas is optimized, optimizing the wiring manner between the second outfits of the adjacent areas to minimize the wiring distance includes:

searching a second outfit device to be optimized, which is closest to the adjacent area, in the area;

and if the second distance between the second outfit device to be optimized and the second outfit device connected with the second outfit device is larger than the third distance between the second outfit device to be optimized and the nearest second outfit device in the adjacent area, connecting the second outfit device to be optimized and the nearest second outfit device in the adjacent area with an origin.

Optionally, according to the distribution position of the second outfitting device in the photovoltaic power station, rotating the coordinate system by a preset rotation angle so as to uniformly distribute the second outfitting device in the coordinate system;

dividing the coordinate system into a plurality of areas according to the preset rotation angle of the coordinate system.

Optionally, when the coordinate system has a plurality of preset rotation angles, wiring each region according to each preset rotation angle and optimizing wiring modes of adjacent regions;

And calculating the total cost of the wiring modes corresponding to each preset rotation angle, and determining the wiring mode with the lowest total cost as the optimal wiring mode of the photovoltaic power station.

In a second aspect, an embodiment of the present invention further provides a photovoltaic power station wiring apparatus, where the photovoltaic power station includes a first outfitting apparatus and a plurality of second outfitting apparatuses;

the photovoltaic power plant wiring device includes:

the system comprises a coordinate system establishing module, a first control module and a second control module, wherein the coordinate system establishing module is used for acquiring position information of a first outfitting device and a second outfitting device in a photovoltaic power station, and establishing a coordinate system by taking the position of the first outfitting device as an origin, so that the second outfitting device is distributed in the coordinate system;

a wiring module for dividing the coordinate system into a plurality of areas, and wiring each of the areas according to a preset wiring rule so that the second outfit in each of the areas is connected to the first outfit;

and the wiring optimization module is used for optimizing the wiring mode between the second outfit devices of the adjacent areas when the wiring mode between the second outfit devices of the adjacent areas can be optimized, so that the wiring distance is the shortest.

According to the photovoltaic power station wiring method and device provided by the embodiment of the invention, the position of the first outfitting device in the photovoltaic power station is taken as the origin to establish the coordinate system, the second outfitting device is distributed in the coordinate system, the coordinate system is divided into a plurality of areas, firstly, the areas are wired according to the preset wiring rule corresponding to each area, so that the second outfitting device in each area is connected to the first outfitting device, and then when the wiring mode between the second outfitting devices of adjacent areas can be optimized, the wiring mode between the second outfitting devices of the adjacent areas is optimized, so that the wiring distance is shortest. Compared with the traditional manual wiring design scheme, the technical scheme of the invention has wider application scene, and can be suitable for wiring design between the junction box and the inverter in the centralized photovoltaic power station and wiring design between the group string inverter and the box transformer in the group string photovoltaic power station. The wiring can be realized fast according to the coordinates of the equipment, the wiring design efficiency is improved, different areas in the coordinate system of the photovoltaic power station are divided, the same power station can allow various different wiring modes to exist, the wiring modes are more flexible, the reasonable design of wiring in different areas is realized, the wiring optimization between adjacent areas is facilitated, the wiring length is shortened, the cable loss is reduced, and the cable and the construction cost are saved.

Drawings

Fig. 1 is a schematic flow chart of a photovoltaic power station wiring method provided by an embodiment of the invention;

fig. 2 is a schematic diagram of distribution positions of an equipment device of a photovoltaic power station according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of distribution positions of the outfitting devices in a coordinate system area according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of distribution positions of the outfitting in another coordinate system area according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a distribution position of an equipment device of another photovoltaic power plant according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a distribution position of an equipment device of another photovoltaic power plant according to an embodiment of the present invention;

FIG. 7 is a schematic flow chart of another photovoltaic power plant wiring method provided by an embodiment of the present invention;

fig. 8 is a schematic block diagram of a photovoltaic power station wiring device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

Example 1

Fig. 1 is a schematic flow chart of a photovoltaic power station wiring method provided by the embodiment of the present invention, where the embodiment is applicable to the case of wiring an equipment device in a photovoltaic power station, the method may be performed by the photovoltaic power station wiring device, and the device may be implemented in software and/or hardware, where the device may be configured in an electronic device, for example, a server or a terminal device, and a typical terminal device includes a mobile terminal, and specifically includes a mobile phone, a computer, a tablet computer, or the like.

Fig. 2 is a schematic diagram of distribution positions of devices of a photovoltaic power plant according to an embodiment of the present invention, fig. 2 schematically illustrates a distribution situation of a first device and a second device in the photovoltaic power plant according to an embodiment of the present invention, and the photovoltaic power plant includes a first device 10 and a plurality of second devices 20 as shown in fig. 2; accordingly, as shown in fig. 1, the photovoltaic power station wiring method specifically may include:

s110, acquiring position information of a first outfit device and a second outfit device in the photovoltaic power station, and establishing a coordinate system by taking the position of the first outfit device as an origin, so that the second outfit device is distributed in the coordinate system.

The photovoltaic power station provided by the embodiment of the invention can be a centralized photovoltaic power station, a group string photovoltaic power station or other types of photovoltaic power stations. The centralized photovoltaic power station generally includes a junction box, a centralized inverter, a box-type substation (hereinafter referred to as "box transformer"), and other devices, and each junction box is connected to a plurality of photovoltaic modules to ensure orderly connection of the photovoltaic modules and realize a junction function, and all junction boxes are connected to the box transformer through the centralized inverter to realize electric energy conversion. The centralized inverter and the box transformer in the centralized photovoltaic power station are generally designed in an integrated manner and are installed in the same container. The string type photovoltaic power station generally comprises string type inverters, box transformer and other equipment devices, each string type inverter is connected with a plurality of photovoltaic modules, all string type inverters are connected with the box transformer, or each string type inverter is connected with the box transformer through a plurality of converging boxes, so that electric energy conversion is achieved.

Referring to fig. 2, the first outfit 10 and the second outfit 20 in the present embodiment are outfits in a photovoltaic power plant, including but not limited to an inverter, a combiner box, a box transformer, and the like. Illustratively, the first outfit 10 is a centralized inverter or an integrated box transformer, and the second outfit 20 is a junction box, so that the photovoltaic power station wiring method provided by the embodiment of the invention is suitable for wiring between the junction box and the inverter in the centralized photovoltaic power station. The first outfit 10 is a box transformer, and the second outfit 20 is a string inverter or a combiner box, so that the photovoltaic power station wiring method provided by the embodiment of the invention is suitable for wiring between the string inverter and the box transformer or between the combiner box and the box transformer in the string photovoltaic power station. It will be appreciated that the first outfitting device 10 and the second outfitting device 20 may be other combinations of the outfitting devices, or may be other outfitting devices in a photovoltaic power station, so as to satisfy the correspondence relationship between the plurality of second outfitting devices 20 and one first outfitting device 10, so that the technical solution of the embodiment of the present invention can be applied to providing a wiring scheme for the connection between the plurality of second outfitting devices 20 and one first outfitting device 10.

In this embodiment and the following embodiments, a photovoltaic power station is taken as a centralized photovoltaic power station, and the first installation device 10 is a box transformer, and the second installation device 20 is a junction box. Specifically, the position information of the first outfit 10 and the second outfit 20 is acquired, a rectangular coordinate system is established with the position 10 of the first outfit as an origin, and the second outfit 20 is distributed in the coordinate system to acquire the coordinates of the second outfit 20 in the rectangular coordinate system.

And S120, dividing the coordinate system into a plurality of areas, and wiring each area according to a preset wiring rule corresponding to each area so that the second outfit device in each area is connected to the first outfit device.

Referring to fig. 2, the coordinate system may be divided into four areas according to four quadrants of the rectangular coordinate system, and the coordinates of each second outfit in the corresponding areas may be acquired. For example, different wiring rules may be preset according to the topography of the photovoltaic power station, the distribution of the photovoltaic modules, and the distribution of the second outfit, and different areas may be wired. For example, the plurality of areas includes a first preset area, and the photovoltaic modules in the first preset area are arranged to form a regular square matrix, so that the preset wiring rule corresponding to the first preset area may be manhattan distance wiring. The manhattan distance is also called a city block distance, that is, the sum of the distances between two points in the coordinate axis along the X-axis direction and the distances along the Y-axis direction, and accordingly, the manhattan distance wiring is performed according to a manhattan distance measurement path between the two points. The plurality of areas in the coordinate system may further include a second preset area, where the second preset area is an area where the photovoltaic modules are not regularly arranged, so that a preset wiring rule corresponding to the second preset area may be euclidean distance type wiring. The euclidean distance generally refers to a euclidean distance, that is, a linear distance between two points in space, and accordingly, the euclidean wiring connects the two points with a linear wiring.

Illustratively, the second outfit in each zone is connected to each other by a cable according to a preset routing rule corresponding to each zone, and the second outfit closest to the origin in each zone is connected to the origin by a cable such that the second outfit in each zone is connected to the first outfit. Considering that the cables between the junction box and the box transformer substation also need to be laid in a bridge or buried, the cables are routed according to the characteristics of different areas in the coordinate system by corresponding preset routing rules, so that the difficulty in cable laying is reduced, the cables and construction cost are saved, and the line loss is reduced.

And S130, optimizing the wiring mode between the second outfits of the adjacent areas so as to minimize the wiring distance when the wiring mode between the second outfits of the adjacent areas can be optimized.

Illustratively, after wiring of each area is completed, it is determined whether the wiring pattern between the second outfit devices of the adjacent areas can be optimized. For example, if the wiring pattern between the second device closest to the adjacent area and the second device connected thereto in each area is determined to have an optimization space, if the wiring length between the second device closest to the adjacent area and the second device connected thereto in a certain area is longer than the distance between the second device and the second device closest to the adjacent area, it can be determined that the wiring pattern between the second device and the second device closest to the adjacent area can be optimized. When the wiring mode is optimized, the original wiring modes of the second outfit device and the second outfit device nearest to the adjacent area can be changed into the original wiring modes of the second outfit device, the second outfit device and the adjacent area are connected with the coordinate axis through the vertical wiring, and the origin is connected through the coordinate axis, so that the wiring length between the second outfit device and the origin is shortened, and the optimization of the wiring mode is realized.

According to the technical scheme, the position of the first outfit device in the photovoltaic power station is taken as an origin to establish a coordinate system, the second outfit devices are distributed in the coordinate system, the coordinate system is divided into a plurality of areas, wiring is firstly carried out on each area according to the preset wiring rule corresponding to each area, so that the second outfit device in each area is connected to the first outfit device, and then when the wiring mode between the second outfit devices of adjacent areas can be optimized, the wiring mode between the second outfit devices of the adjacent areas is optimized, so that the wiring distance is shortest. Compared with the traditional manual wiring design scheme, the technical scheme of the invention has wider application scene, and can be suitable for wiring design between the junction box and the inverter in the centralized photovoltaic power station and wiring design between the group string inverter and the box transformer in the group string photovoltaic power station. The wiring can be realized fast according to the coordinates of the equipment, the wiring design efficiency is improved, different areas in the coordinate system of the photovoltaic power station are divided, the same power station can allow various different wiring modes to exist, the wiring modes are more flexible, the reasonable design of wiring in different areas is realized, the wiring optimization between adjacent areas is facilitated, the wiring length is shortened, the cable loss is reduced, and the cable and the construction cost are saved.

On the basis of the above embodiment, the present embodiment further optimizes the above photovoltaic power station wiring method. Correspondingly, the method of the embodiment specifically comprises the following steps:

s210, acquiring position information of a first outfit device and a second outfit device in the photovoltaic power station, and establishing a coordinate system by taking the position of the first outfit device as an origin, so that the second outfit device is distributed in the coordinate system.

S220, sorting the second outfitting devices in the areas from far to near according to the distance between the second outfitting device and the origin in each area.

Fig. 3 is a schematic diagram of distribution positions of devices in a coordinate system area according to an embodiment of the present invention, and fig. 3 schematically illustrates distribution and routing connection of devices in the coordinate system area shown in fig. 2. In this embodiment, the photovoltaic power station is still taken as a centralized photovoltaic power station, the first outfitting device is a box transformer, the second outfitting device is a combiner box, as shown in fig. 3, the first outfitting device, i.e. the box is located at the origin of coordinates O, and the second outfitting device, i.e. the combiner box is distributed in the area of the coordinate system, as shown by the points A, B, C, D and E in the first quadrant. The distances between the second outfit and the origin are calculated according to the coordinates of the second outfit, namely, the distances between the points A, B, C, D and E in the first quadrant and the origin O are calculated respectively, all the points in the area are ordered according to the distances from far to near according to the distances between the second outfit and the origin O, and the points with the same distance need special marks and further judgment.

For example, when sorting the second devices in the area, if there are at least two second devices in the area with equal distances from the origin, the second device closest to the preset angular bisector of the area is sorted before. Referring to fig. 3, if there are a plurality of points farthest from the origin in the coordinate area, the points ordered in front are determined according to a preset angular bisector of the coordinate area, for example, a 45-degree angular bisector L ending at the origin, and this is set because a point closer to the 45-degree angular bisector L is more convenient to route than a point farther from the 45-degree angular bisector L, which is advantageous in shortening the routing length.

For example, after the above processing, if at least two farthest points with the same distance from the origin still exist, the area is divided equally by a preset angular dividing line, and one second outfit device with the largest number of second outfits is ranked in front in the area where at least two second outfits are located. Referring to fig. 3, if the point a and the point B are both the farthest points having the same distance from the origin, the area is divided by the 45-degree angular bisector L, the number of the second outfits in the area where the point a and the point B are each located is determined, and the second outfits corresponding to the points in the area where the total number of the second outfits is greater are ranked in the front.

S230, determining the second outfit devices or the first outfit devices connected with each second outfit device in turn according to the ordering of the second outfit devices and the preset wiring rules corresponding to the areas.

Specifically, through a series of processes in step S220, the ranks of the second devices in each area may be determined, a set of the second devices in each area may be generated according to the ranks, and the second devices connected to each second device may be sequentially determined according to the ranks of the second devices in the set, for example, each second device is connected to the second device closest to the second device according to a wiring manner specified by a preset wiring rule, and the last second device in the ranks is connected to the origin, thereby enabling the second devices in each area to be sequentially connected from far to near and finally connected to the first device.

And S240, optimizing the wiring mode between the second outfits of the adjacent areas so as to minimize the wiring distance when the wiring mode between the second outfits of the adjacent areas can be optimized.

According to the technical scheme of the embodiment, the second outfitting devices in the areas are sequenced from far to near according to the distance between the second outfitting devices in each area and the origin, and the second outfitting devices or the first outfitting devices connected with each second outfitting device are sequentially determined according to the sequencing of the second outfitting devices and the preset wiring rules corresponding to the areas, so that each second outfitting device in the areas can be orderly connected from far to near according to the preset wiring rules, the routing length in each area is facilitated to be shortened, the cable loss is reduced, and the cables and the construction cost are saved.

On the basis of the above embodiment, the present embodiment further optimizes the photovoltaic power station wiring method shown in fig. 3. Illustratively, the region in the coordinate system includes a first preset region; correspondingly, the step S230 specifically includes:

s310, judging whether the second outfit device ranked in the ith in the first preset area and the second outfit device nearest to the second outfit device can perform Manhattan distance wiring.

If the second outfit device with the i-th rank and the second outfit device closest to the second outfit device can perform manhattan distance wiring in the first preset area, executing S320; if the second device ranked in the first preset area and the second device nearest thereto cannot perform manhattan distance routing, S340 is performed.

The photovoltaic modules in the first preset area are arranged to form a regular square matrix, so that the preset wiring rule corresponding to the first preset area can be Manhattan distance type wiring. The manhattan distance is also called a city block distance, i.e. the sum of the distance between two points in the coordinate axis along the X-axis and the distance along the Y-axis, and correspondingly, the manhattan distance wiring is performed according to the manhattan distance measurement path between the two points.

The coordinate system area shown in fig. 3 may be a first preset area, and referring to fig. 3, a technical solution of this embodiment is described exemplarily. The positions of the second outfits in the first quadrant are points A, B, C, D and E, respectively, and the second outfits are sorted from far to near according to the distance between the second outfit and the origin in the area, so as to obtain a sorting set [ A, B, C, D, E ] of the second outfits. For the first preset area, it is sequentially determined whether the second device in the order i and the second device closest thereto can perform manhattan distance type wiring, for example, the point a is the second device in the order 1, the point B is closest to the point a, and it is determined whether the points a and B can perform manhattan distance type wiring. A triangle with the line segment AB as the diagonal line is drawn in the origin direction, and if the triangle exists, the points A and B can be Manhattan distance type wiring.

S320, connecting the two wires according to Manhattan distance type wiring.

The point A is connected with the point B by the line segment Aa and the line segment aB, the line segments Aa and Ba are the wiring of the second equipment device (the bus box) at the point A and the point B, the vertex a is the intersection point of the wiring paths between the two, and the point a continuously participates in the subsequent wiring planning.

S330, determining an intersection point of wiring paths between the second outfit device in the order of the ith and the second outfit device closest to the intersection point, judging whether the intersection point and the second outfit device closest to the intersection point in the area can perform Manhattan distance type wiring, and wiring according to a judging result.

The first preset area comprises n second outfitting devices, i is more than or equal to 1 and less than or equal to n, and the second outfitting devices in the order of n are connected with an origin.

Illustratively, referring to fig. 3, the second device closest to the intersection point a in the sorted set of second devices [ a, B, C, D, E ] is the second device at the point C, so it can be continued to determine whether the intersection point a and the point C can be manhattan distance routed. And drawing a triangle in the origin direction by taking the line segment aC as a diagonal line, wherein the triangle exists, connecting the point a with the point C by using the line segment ab and the line segment bC, namely the wiring of a second outfit (bus box) at the point a and the point C, and continuing to participate in the subsequent wiring planning by using the intersection point b. And so on, wiring of all the second outfits in the ordered set is completed sequentially according to the method so that each second outfit in the area is orderly connected from far to near.

The second outfit device in the n-th order is a second outfit device at a point E, the second outfit device at the point E is connected with the second outfit device at a point D in Manhattan distance type wiring, and the intersection point D is closer to the origin O, so that the intersection point D can be connected with the origin O through a straight line wiring, and the second outfit device at the point E is connected with the first outfit device at the origin O. So far, the junction boxes at the points A, B, C, D and E are all joined to the box transformer at the origin O, thereby performing electric energy conversion.

And S340, connecting the two through a straight line.

For example, if the point a is the second outfit of the rank 1, the point B is closest to the point a, and if a triangle cannot be drawn according to the points a and B (this is not shown in fig. 3), the two cannot be manhattan-distance-wired, and the two are connected by a straight line.

S350, judging whether the second outfit device in the order of the ith and the second outfit device closest to the second outfit device and closest to the second outfit device in the area can perform Manhattan distance type wiring with other second outfit devices closest to the second outfit device, and wiring according to the judging result.

For example, if the point a is closer to the origin O than the point a, the point a continues to participate in the subsequent routing planning, and it may be determined continuously whether the second device at the point C can be manhattan-distance routed with the second device at the point a according to the result of the determination.

According to the technical scheme of the embodiment, according to the ordering of the second outfitting devices in the first preset area, the second outfitting devices in the area are subjected to Manhattan distance type wiring, each second outfitting device in the area is connected with the nearest point in the area, the second outfitting device with the last ordering is connected with the first outfitting device, the ordered connection of the second outfitting devices in the first preset area and the first outfitting devices is realized, the technical scheme of the embodiment adopts a horizontal and vertical wiring mode, the method can be suitable for the area where photovoltaic modules are regularly arranged in a photovoltaic power station, the wiring scheme of the area is more practical, the cable laying difficulty is reduced, the cable and the construction cost are saved, and the line loss can be reduced.

On the basis of the above embodiment, the present embodiment further optimizes the photovoltaic power station wiring method shown in fig. 3. Illustratively, the region in the coordinate system may further include a second preset region; accordingly, step S230 may further include:

s410, setting a ray area with a preset angle range by taking the position of the second outfit device with the k-th rank in the second preset area as the vertex.

The second preset area may be a custom area in the photovoltaic power station, for example, the second preset area is an area with irregular photovoltaic module arrangement. The preset wiring rule corresponding to the second preset area may be a euclidean distance type wiring. The euclidean distance generally refers to a euclidean distance, that is, a linear distance between two points in space, and accordingly, the euclidean wiring connects the two points with a linear wiring.

Fig. 4 is a schematic diagram of distribution positions of devices in another coordinate system area according to an embodiment of the present invention, and fig. 4 schematically illustrates another distribution and routing connection situation of devices in the coordinate system area shown in fig. 2, where the coordinate system area may be a second preset area. In this embodiment, the photovoltaic power station is still taken as a centralized photovoltaic power station, the first outfitting device is a box transformer, the second outfitting device is a combiner box, as shown in fig. 4, the first outfitting device, i.e. the box is located at the origin of coordinates O, and the second outfitting device, i.e. the combiner box is distributed in the area of the coordinate system, as shown by the points A, B, C, D and E in the first quadrant.

Illustratively, referring to FIG. 4, the second equipped devices are ranked from far to near, resulting in a ranked set of second equipped devices [ A, B, C, D, E ]. And setting a ray area of a preset angle range by taking the position of the second outfit device ordered 1 in the second preset area, namely the point A as the vertex, as the second preset area. The preset angle range can be set according to needs, for example, the preset angle range is 90 degrees, a line segment AO where the point A and the origin O are located is taken as an angular bisector, and two rays which form +/-45 degrees with the AO are made to form a ray area.

S420, judging whether a second outfit device closest to the k second outfit device exists in the ray area of the k second outfit device.

If there is a second outfit closest to the kth second outfit within the ray area of the ordered second outfit, performing S430; if there is no second device closest to the k-th second device within the ray region of the ordered second device, S450 is performed.

S430, connecting the two through straight lines.

Illustratively, when k=1, in the ray area of the second outfit device of rank 1, there is a second outfit device closest to the point a, which is a second outfit device at the point C of the rank set, the point a may be connected to the point C by a straight line, wiring between the corresponding two second outfit devices is achieved, and the point a is removed from the rank set.

S440, judging whether a second outfit device closest to the second outfit device exists in the ray area of the k+1 second outfit device, and wiring according to the judging result.

Illustratively, a point B that is furthest from the origin O is selected from the ordered set of second equipped devices, i.e., the location of the second equipped device of rank 2. And taking a line segment BO where the point B and the origin O are positioned as an angular bisector, and making two rays which form +/-45 degrees with the BO to form a ray region. In the ray area of the second outfit at the point B, there is a second outfit closest to the point B, and the second outfit is a second outfit at the point C in the sorting set, the point B and the point C can be connected through a straight line, so as to realize the wiring between the two corresponding second outfits, and the point B is removed from the sorting set. And so on, according to the ordering of the second outfits, wiring of all the second outfits in the ordered set is sequentially completed, so that each second outfit in the area is orderly connected from far to near.

S450, determining a second outfit closest to the ray area of the k-th second outfit, calculating a first distance between the k-th second outfit and the origin, and a first length of a trace between the k-th second outfit closest to the ray area of the k-th second outfit and the origin.

For example, if there is no second outfit closest to it within the ray area of the second outfit, then the point is added to the first set and the point is deleted from the ordered set of second outfits. For the points in the first set, taking the point E as an example, if there is no second outfit device closest to the point E in the ray area of the point E, determining a point D in which a second preset area is closest to the ray area of the point E. The first distance between the point E and the origin O, i.e., the length of the line segment OE, i.e., the first distance l1=oe. The first length OF the trace between the closest point D to the ray area OF point E and the origin O is the length OF the line segment OD, i.e. the first length l2=od (if point D is connected to the origin O via point F (not shown in the figure), then the first length should be the sum OF the line segment DF and the line segment OF). .

S460, judging whether the ratio of the first distance to the first length is greater than or equal to a preset threshold.

If the ratio of the first distance to the first length is smaller than the preset threshold, S470 is executed; if the ratio of the first distance to the first length is greater than or equal to the preset threshold, S480 is performed.

S470, connecting the second outfit device of the k-th sorting with the origin.

Illustratively, assume that the preset threshold is α, where the magnitude of α may be set as desired. If L1/L2 is smaller than alpha, the distance between the points D and E is too far, the point D is not required to be connected with the point E and the origin O, and the point E and the origin O are directly connected by straight line routing.

S480, connecting the second outfit device with the k-th rank with the second outfit device nearest to the ray area.

If L1/L2 is larger than or equal to alpha, the distance between the points D and E is relatively close, the point E and the point D can be directly connected through the linear wiring, and the point E is connected to the original point O through the point D, so that the bridge frame or the buried length and the like are reduced, and the construction cost is reduced.

According to the technical scheme of the embodiment, the second outfit devices in the second preset area are ordered, euclidean distance type wiring is carried out on the second outfit devices in the area, each second outfit device in the area is connected with the nearest point of the second outfit device in the area, ordered connection of the second outfit devices in the second preset area and the first outfit devices is achieved, the linear wiring mode is adopted, the method can be suitable for irregularly arranged areas of photovoltaic components in a photovoltaic power station, the wiring scheme of the area is more fit with reality, the difficulty of cable laying is reduced, cables and construction cost are saved, and line loss can be reduced.

The photovoltaic power station wiring method is further optimized, and correspondingly, the method specifically comprises the following steps:

s510, acquiring position information of a first outfit device and a second outfit device in the photovoltaic power station, and establishing a coordinate system by taking the position of the first outfit device as an origin, so that the second outfit device is distributed in the coordinate system.

S520, dividing the coordinate system into a plurality of areas, and wiring each area according to a preset wiring rule corresponding to each area so that the second outfit device in each area is connected to the first outfit device.

S530, searching the second outfit device to be optimized, which is closest to the adjacent area in the area.

Fig. 5 is a schematic diagram of a distribution position of an equipment device of another photovoltaic power station according to an embodiment of the present invention, fig. 6 is a schematic diagram of a distribution position of an equipment device of another photovoltaic power station according to an embodiment of the present invention, fig. 5 and fig. 6 each schematically show a case where each second equipment device in a photovoltaic power station is connected by manhattan distance type wiring, fig. 5 shows a wiring scheme before optimization, and fig. 6 shows a wiring scheme after optimization. This embodiment will be schematically described with reference to fig. 5 and 6. In the four quadrants of the rectangular coordinate system shown in fig. 5 and 6, corresponding to the four regions in the coordinate system, it is first determined whether an optimizable space exists between the first quadrant and the adjacent quadrant, and the nearest points, i.e., the point D and the point E, in the first quadrant are found out respectively. The second outfitting at points D and E is the second outfitting to be optimized.

S540, calculating a second distance between the second outfit to be optimized and the second outfit connected with the second outfit, and calculating a third distance between the second outfit to be optimized and the nearest second outfit in the adjacent area.

Referring to fig. 5, for the second outfit to be optimized at point D, point D is connected with point D, the second distance between point D and point D is D1, point F in the second quadrant is closest to point D, and the distance between point D and line segment Ff, i.e., the perpendicular distance between point D and point F, is a third distance D2. For the second outfit to be optimized at the point E, the point E is connected with the point d, the second distance between the point E and the point d is E1, the point j in the second quadrant is nearest to the point E, and the distance between the point E and the line segment Jj, namely the vertical distance between the point E and the point j is a third distance E2.

S550, judging whether the second distance is larger than the third distance.

If the second distance is greater than the third distance, then S560 is performed; if the second distance is less than or equal to the third distance, S570 is performed.

S560, connecting the second outfit to be optimized and the nearest second outfit in the adjacent area with the origin.

For the second outfit to be optimized at the point D, as D1 is less than D2, the wiring mode between the first quadrant and the second quadrant has no optimization space, and the wiring mode in the second outfit is not required to be optimized. For the second outfit to be optimized at point E, since E1 > E2, there is an optimization space between the first and fourth quadrants. And the same thing can confirm that an optimization space exists between the second quadrant and the third quadrant.

Referring to fig. 5 and 6, for the second outfit to be optimized between the optimizable quadrants, for example, for the point E, a point j closest to the point E in the fourth quadrant is searched, and the point E and the point j are connected with the coordinate axes between the two quadrants, respectively, and are connected with the origin O through the coordinate axes. In the original wiring scheme, it is also necessary to newly route the points between the point E and the point J and the origin O, for example, by directly connecting the point D to the origin O and connecting the points J and K to the coordinate axes. For the second quadrant and the third quadrant, the two points G, H are respectively connected with the vertical line segments on the x axis.

S570, wiring is finished.

According to the technical scheme, when the wiring mode between the second outfit devices in the adjacent areas can be optimized, the wiring mode between the second outfit devices in the adjacent areas is optimized, so that the overall better wiring mode is obtained, the wiring length is shortened, the cable loss is reduced, and the cable and the construction cost are saved.

In this embodiment, the method for wiring a photovoltaic power station is further optimized, and illustratively, in this embodiment, according to the distribution position of the second outfit device in the photovoltaic power station, the coordinate system is rotated by a preset rotation angle, so that the second outfit device is uniformly distributed in the coordinate system; the coordinate system is divided into a plurality of areas according to a preset rotation angle of the coordinate system.

Specifically, when the distribution of the photovoltaic modules in the photovoltaic power station is irregular, for example, the photovoltaic modules form an oblique square matrix, in order to optimize the wiring manner between the first outfit device and the second outfit device, the coordinate system may be rotated by a preset rotation angle with the origin as the center, and the magnitude of the preset rotation angle may be input according to the requirement, and when the rotation angle is not input by the user, the default preset rotation angle is 0 °. After the coordinate system is rotated by a preset rotation angle, the coordinate system can be divided into four areas according to the positions of the rotated first quadrant to the fourth quadrant, coordinates of the second outfit devices in the four areas are obtained, wiring is carried out on the areas according to a preset wiring rule corresponding to each area according to the coordinates of the second outfit devices in each area, the second outfit devices in each area are connected to the first outfit devices, and the wiring mode between the second outfit devices of adjacent areas is optimized, so that the wiring distance is shortest.

When a plurality of preset rotation angles exist in the coordinate system, wiring is carried out on each region according to each preset rotation angle, and optimization of the wiring mode of the adjacent region is carried out; and calculating the total cost of the wiring modes corresponding to each preset rotation angle, and determining the wiring mode with the lowest total cost as the optimal wiring mode of the photovoltaic power station.

Specifically, when the user inputs a plurality of preset rotation angles, wiring of each region and wiring optimization between adjacent regions can be performed according to each preset rotation angle, and total cost can be calculated according to parameters such as cable cost, bridge or buried cost required for wiring input by the user. And comparing the total cost corresponding to each preset rotation angle, and displaying the wiring mode with the lowest total cost to a user as an optimal wiring mode.

According to the technical scheme, different areas in the coordinate system are divided according to the preset rotation angles, wiring is conducted on each area according to each preset rotation angle, optimization of wiring modes of adjacent areas is conducted, and the wiring mode with the lowest total cost is determined to be the optimal wiring mode of the photovoltaic power station.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Fig. 7 is a schematic flow chart of another photovoltaic power station wiring method according to an embodiment of the present invention, where the photovoltaic power station wiring method is further optimized. In this embodiment, a photovoltaic power station is still used as a centralized photovoltaic power station, and wiring between a box transformer and a junction box is schematically described. As shown in fig. 7, the method specifically may include:

S610, establishing a coordinate system by taking the box as an origin.

S620, acquiring user-defined parameters.

The custom parameters comprise a preset rotation angle.

S630, dividing the coordinate system into a plurality of areas according to the preset rotation angle, and acquiring the coordinates of the combiner boxes in the areas.

S640, wiring is conducted on the junction boxes in the areas.

And S650, performing wiring optimization on the junction boxes between the adjacent areas.

And S660, sorting wiring schemes corresponding to the preset rotation angles according to the total cost.

And S670, taking the wiring scheme with the lowest total cost as an optimal wiring scheme.

Example two

Fig. 8 is a schematic block diagram of a wiring device for a photovoltaic power station according to an embodiment of the present invention, where the embodiment is applicable to wiring an equipment device in a photovoltaic power station. The photovoltaic power station wiring device provided by the embodiment of the invention can execute the photovoltaic power station wiring method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. The photovoltaic power station comprises a first outfitting device and a plurality of second outfitting devices; accordingly, as shown in fig. 8, the apparatus specifically includes a coordinate system establishment module 710, a wiring module 720, and a wiring optimization module 730, wherein:

The coordinate system establishing module 710 is configured to obtain position information of a first outfitting device and a second outfitting device in the photovoltaic power station, establish a coordinate system with the position of the first outfitting device as an origin, and enable the second outfitting device to be distributed in the coordinate system;

the wiring module 720 is configured to divide the coordinate system into a plurality of areas, and to route each area according to a preset wiring rule, so that the second provisioning device in each area is connected to the first provisioning device;

the wiring optimization module 730 is configured to optimize the wiring pattern between the second devices in the adjacent area so as to minimize the wiring distance when the wiring pattern between the second devices in the adjacent area is optimized.

The photovoltaic power station wiring device provided by the embodiment of the invention can execute the photovoltaic power station wiring method provided by any embodiment of the invention, has corresponding functional modules and beneficial effects of the execution method, and is not repeated.

Example III

Fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention. Fig. 9 shows a block diagram of an exemplary device 412 suitable for use in implementing embodiments of the invention. The device 412 shown in fig. 9 is only an example and should not be construed as limiting the functionality and scope of use of embodiments of the invention.

As shown in fig. 9, the device 412 is in the form of a general purpose device. Components of device 412 may include, but are not limited to: one or more processors 416, a storage 428, and a bus 418 that connects the various system components (including the storage 428 and the processors 416).

Bus 418 represents one or more of several types of bus structures, including a memory device bus or memory device controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry standard architecture (Industry Subversive Alliance, ISA) bus, micro channel architecture (Micro Channel Architecture, MAC) bus, enhanced ISA bus, video electronics standards association (Video Electronics Standards Association, VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.

Device 412 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by device 412 and includes both volatile and nonvolatile media, removable and non-removable media.

The storage 428 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory, RAM) 430 and/or cache memory 432. Device 412 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 434 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 9, commonly referred to as a "hard disk drive"). Although not shown in fig. 9, a magnetic disk drive for reading from and writing to a removable nonvolatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable nonvolatile optical disk such as a Read Only Memory (CD-ROM), digital versatile disk (Digital Video Disc-Read Only Memory, DVD-ROM), or other optical media, may be provided. In such cases, each drive may be coupled to bus 418 via one or more data medium interfaces. Storage 428 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the invention.

A program/utility 440 having a set (at least one) of program modules 442 may be stored, for example, in the storage 428, such program modules 442 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 442 generally perform the functions and/or methodologies in the described embodiments of the invention.

The device 412 may also communicate with one or more external devices 414 (e.g., keyboard, pointing terminal, display 424, etc.), one or more terminals that enable a user to interact with the device 412, and/or any terminals (e.g., network card, modem, etc.) that enable the device 412 to communicate with one or more other computing terminals. Such communication may occur through an input/output (I/O) interface 422. Also, device 412 may communicate with one or more networks such as a local area network (Local Area Network, LAN), a wide area network (Wide Area Network, WAN) and/or a public network such as the internet via network adapter 420. As shown in fig. 9, network adapter 420 communicates with other modules of device 412 over bus 418. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with device 412, including, but not limited to: microcode, end drives, redundant processors, external disk drive arrays, disk array (Redundant Arrays of Independent Disks, RAID) systems, tape drives, data backup storage systems, and the like.

The processor 416 executes various functional applications and data processing by running programs stored in the storage 428, for example, to implement a photovoltaic power plant wiring method provided by an embodiment of the present invention, the method comprising:

Example IV

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the photovoltaic power station wiring method provided by the embodiment of the invention, the method comprising:

The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having 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. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A method of wiring a photovoltaic power plant, the photovoltaic power plant comprising a first outfitting means and a plurality of second outfitting means;

the photovoltaic power station wiring method comprises the following steps:

When the wiring mode between the second outfit devices in the adjacent areas can be optimized, optimizing the wiring mode between the second outfit devices in the adjacent areas so as to minimize the wiring distance;

wiring each region according to a preset wiring rule corresponding to each region so that the second outfit device in each region is connected to the first outfit device, wherein the wiring rule comprises the following steps:

sequentially determining the second outfit devices or the first outfit devices connected with each second outfit device according to the sequence of the second outfit devices and the preset wiring rules corresponding to the areas;

the region in the coordinate system comprises a first preset region;

the first preset area comprises n second outfitting devices, i is more than or equal to 1 and less than or equal to n, and the second outfitting devices in the sequence of n are connected with an origin;

the method for judging whether Manhattan distance wiring can be performed comprises the following steps: for the second outfit at the point A and the point B, drawing a triangle in the origin direction by taking the line segment AB as a diagonal line, and if the triangle exists, carrying out Manhattan distance wiring on the point A and the point B;

the method further comprises the steps of:

judging whether the second outfit device closest to the second outfit device in the ith order and other second outfit devices closest to the second outfit device in the area can perform Manhattan distance type wiring or not, and wiring according to a judging result;

When the wiring pattern between the second outfits of the adjacent areas can be optimized, optimizing the wiring pattern between the second outfits of the adjacent areas so as to minimize the wiring distance, comprising:

for the second outfit to be optimized at the point E, the point E is connected with the point d, the second distance between the point E and the point d is E1, the point j in the fourth quadrant is nearest to the point E, the distance between the point E and the line segment Jj is calculated, namely the vertical distance between the point E and the point j is a third distance E2, if E1 is more than E2, an optimization space exists between the first quadrant and the fourth quadrant, the nearest point j of the point E in the fourth quadrant is searched, and the point E and the coordinate axes between the point j and the two quadrants are respectively connected and connected with an origin O through the coordinate axes; the point d is the intersection of the wiring paths between the second outfit, and the points J and J are the second outfits of adjacent quadrants.

2. The wiring method of a photovoltaic power station according to claim 1, wherein the coordinate system is rotated by a preset rotation angle according to the distribution position of the second outfitting means in the photovoltaic power station so that the second outfitting means are uniformly distributed in the coordinate system;

3. The photovoltaic power station wiring method according to claim 2, wherein when the coordinate system has a plurality of preset rotation angles, each region is wired according to each preset rotation angle, and the wiring mode of the adjacent region is optimized;

4. A photovoltaic power plant wiring apparatus, wherein the photovoltaic power plant comprises a first outfitting apparatus and a plurality of second outfitting apparatuses;

the photovoltaic power plant wiring device includes:

A wiring optimization module, configured to optimize, when a wiring manner between the second devices in the adjacent area is optimized, the wiring manner between the second devices in the adjacent area so as to minimize a wiring distance;

the region in the coordinate system comprises a first preset region;

the method further comprises the steps of: