A layout method, system and device for inverter

Abstract

The present invention discloses a layout method, system and device of an inverter. In the scheme, the photovoltaic component groups are first grouped based on the position information of each photovoltaic component in the power station, and the distance between any two photovoltaic components in the same photovoltaic component group is less than a first preset distance, and then the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and connected to the same inverter. Since each photovoltaic component group includes multiple photovoltaic components and the distance between each photovoltaic component in the same photovoltaic component group is small, multiple photovoltaic components can be connected to one inverter, so that the same inverter can invert the direct current output by multiple photovoltaic components into alternating current. It can be seen that in the present application, the layout of the inverter can be automatically performed according to the position of each photovoltaic component, ensuring that the distance between the photovoltaic components connected to the same inverter is small, performing reasonable inverter allocation, reducing the setting cost of the inverter, and having a high layout efficiency.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic system construction, and in particular to a layout method, system and device of an inverter. Background Art

[0002] The photovoltaic system in a power station includes photovoltaic modules that convert solar energy into electrical energy, inverters that convert the DC power output by each photovoltaic module into AC power, and transmit the AC power to power-consuming equipment or grid-connected equipment through AC (Alternating Current) lines, and controllers that control the inverters. Since there are many photovoltaic modules installed in the photovoltaic system, the number of inverters required is also large. If the inverters cannot be reasonably allocated to each photovoltaic module, the cost will increase. Therefore, it is necessary to plan the inverter layout in the photovoltaic system. Summary of the invention

[0003] The purpose of the present invention is to provide an inverter layout method, system and device, which can automatically layout the inverter according to the position of each photovoltaic module, ensure that the distance between photovoltaic modules connected to the same inverter is small, perform reasonable inverter allocation, reduce the inverter setting cost, and have a high layout efficiency.

[0004] In order to solve the above technical problems, the present invention provides a layout method of an inverter, comprising: dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station; each photovoltaic component group has at least one photovoltaic component, and the number of photovoltaic components is not greater than the first preset number corresponding to the photovoltaic component group; the distance between the two photovoltaic components with the largest distance in each photovoltaic component group is less than the first preset distance; each photovoltaic component in the same photovoltaic component group is connected in series and / or in parallel to the same inverter, and each photovoltaic component group corresponds to each inverter one by one, so that the inverter inverts the direct current output of each photovoltaic component connected to itself into alternating current; the first preset number of each photovoltaic component group is an integer greater than 1 based on the parameter setting of the inverter corresponding to the photovoltaic component group.

[0005] Preferably, based on the position information of each photovoltaic component in the power station, each photovoltaic component is divided into at least one photovoltaic component group, including: S21: determining the position order of each photovoltaic component according to the position information of each photovoltaic component, and setting the second photovoltaic component as the current photovoltaic component according to the position order; S22: judging whether the number of photovoltaic components in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset number corresponding to the photovoltaic component group; S23: if it is not greater than the first preset number corresponding to the photovoltaic component group, determining whether the distance between the current photovoltaic component and any photovoltaic component in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset distance based on the position information of the previous photovoltaic component of the current photovoltaic component and the position information of the current photovoltaic component; S24: if it is not greater than the first preset distance, If the distance is set, the current photovoltaic component is divided into the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located, and the process goes to step S27; S25: if it is greater than the first preset distance, the current photovoltaic component is divided into one of the photovoltaic component groups, and the process goes to step S27; S26: if it is greater than the first preset number corresponding to the photovoltaic component group, the current photovoltaic component is divided into one of the photovoltaic component groups, and the process goes to step S27; S27: determine whether the current photovoltaic component is the last photovoltaic component in the position sequence; S28: if it is the last photovoltaic component, the process goes to the step of connecting the photovoltaic components in the same photovoltaic component group in series and / or in parallel and then connecting them to the same inverter; S29: if it is not the last photovoltaic component, the next photovoltaic component of the current photovoltaic component is set as the current photovoltaic component according to the position sequence, and the process returns to step S22.

[0006] Preferably, each photovoltaic component is divided into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, including: acquiring the position information of each photovoltaic component in the power station, determining the distance between each photovoltaic component based on the position information; determining the position order of each photovoltaic component according to the position information of each ungrouped photovoltaic component, and setting the first photovoltaic component as the current photovoltaic component according to the position order; determining the distance order of each photovoltaic component according to the distance between each ungrouped photovoltaic component and the current photovoltaic component, and the distance order is the order of sorting from small to large according to the distance between each ungrouped photovoltaic component and the current photovoltaic component; grouping the first n photovoltaic components in the distance order and the current photovoltaic component into the same photovoltaic component group, and returning to the step of determining the position order of each photovoltaic component according to the position information of each ungrouped photovoltaic component, and setting the first photovoltaic component as the current photovoltaic component according to the position order; n is the first preset number.

[0007] Preferably, after dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, it also includes: dividing a plurality of adjacent photovoltaic component groups into a photovoltaic component set, wherein the distance between the two photovoltaic components with the largest distance in each photovoltaic component set is less than a second preset distance, and the second preset distance is greater than the first preset distance; dividing each photovoltaic component in each photovoltaic component set into a plurality of series paths, and connecting each photovoltaic component in the same series path in series, and the number of series paths is not greater than the first preset number; connecting each photovoltaic component in the same photovoltaic component group in series and / or in parallel to the same inverter, and each photovoltaic component group corresponds to each inverter one by one, including: connecting each series path in the same photovoltaic component set in parallel to the same inverter, and each photovoltaic component set corresponds to each inverter one by one.

[0008] Preferably, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel to the same inverter, the method further includes: generating and displaying a layout planning diagram of the inverter.

[0009] Preferably, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and connected to the same inverter, the method further comprises: determining the center position of each photovoltaic component group, wherein the center position is the position of the geometric center of the photovoltaic component group;

[0010] Each inverter is arranged at the center position of the photovoltaic component group corresponding to itself.

[0011] Preferably, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and then connected to the same inverter, it also includes: dividing the inverters into at least one inverter group based on the position information of each inverter, each inverter group has at least one inverter, and the number of inverters is not greater than a second preset number, and the distance between the two inverters with the largest distance in each inverter group is less than the second preset distance; the second preset number is an integer greater than 1 based on the parameter setting of the AC line; the inverters in the same inverter group are connected in series through the same AC line, and each inverter group corresponds to each AC line one by one, so that the AC line transmits the alternating current output by each inverter connected to itself to the electrical equipment or the grid.

[0012] Preferably, after each photovoltaic component in the same photovoltaic component group is connected in series and / or in parallel and connected to the same inverter, it also includes: generating material requirement information of the power station based on the position information of each photovoltaic component, the position information of each inverter, the distance between the photovoltaic component and the inverter, and the distance between each inverter.

[0013] In order to solve the above technical problems, the present invention also provides an inverter layout system, including: a grouping unit, used to divide each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station; each photovoltaic component group has at least one photovoltaic component, and the number of photovoltaic components is not greater than the first preset number corresponding to the photovoltaic component group; the distance between the two photovoltaic components with the largest distance in each photovoltaic component group is less than the first preset distance; an inverter allocation unit, used to connect each photovoltaic component in the same photovoltaic component group in series and / or in parallel with the same inverter, and each photovoltaic component group corresponds to each inverter one by one, so that the inverter inverts the direct current output of each photovoltaic component connected to itself into alternating current; the first preset number of each photovoltaic component group is an integer greater than 1 based on the parameter setting of the inverter corresponding to the photovoltaic component group.

[0014] To solve the above technical problems, the present invention provides an inverter layout device, comprising: a memory for storing a computer program; and a processor for implementing the steps of the inverter layout method as described above when executing the computer program.

[0015] The present invention provides a layout method, system and device for an inverter. In this scheme, the photovoltaic component groups are first grouped based on the position information of each photovoltaic component in the power station, and the distance between any two photovoltaic components in the same photovoltaic component group is less than a first preset distance. Then, the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and connected to the same inverter. Since each photovoltaic component group includes multiple photovoltaic components and the distance between each photovoltaic component in the same photovoltaic component group is small, multiple photovoltaic components can be connected to one inverter, so that the same inverter can invert the direct current output by multiple photovoltaic components into alternating current. It can be seen that in this application, the layout of the inverter can be automatically performed according to the position of each photovoltaic component, ensuring that the distance between the photovoltaic components connected to the same inverter is small, performing reasonable inverter allocation, reducing the setting cost of the inverter, and having a high layout efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a flow chart of a layout method of an inverter provided by the present invention;

[0018] Figure 2 A schematic diagram of photovoltaic module grouping provided by the present invention;

[0019] Figure 3 A schematic diagram of the inverter setting position provided by the present invention;

[0020] Figure 4 A schematic diagram of connecting a photovoltaic assembly set and an inverter provided by the present invention;

[0021] Figure 5 A schematic diagram of selecting a layout planning schematic diagram to download provided by the present invention;

[0022] Figure 6 A schematic diagram of a layout planning provided by the present invention;

[0023] Figure 7 A schematic diagram of material requirement information provided by the present invention;

[0024] Figure 8 A schematic structural diagram of a layout system of an inverter provided by the present invention;

[0025] Fig. 9 A schematic structural diagram of a layout device for an inverter provided by the present invention. DETAILED DESCRIPTION

[0026] The core of the present invention is to provide an inverter layout method, system and device, which can automatically layout the inverter according to the position of each photovoltaic module, ensure that the distance between photovoltaic modules connected to the same inverter is small, perform reasonable inverter allocation, reduce the inverter setting cost, and have a high layout efficiency.

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Please refer to Figure 1 , Figure 1 A schematic flow chart of a layout method of an inverter provided by the present invention includes:

[0029] S11: Based on the location information of each photovoltaic component in the power station, each photovoltaic component is divided into at least one photovoltaic component group; each photovoltaic component group has at least one photovoltaic component, and the number of photovoltaic components is not greater than a first preset number corresponding to the photovoltaic component group; the distance between the two photovoltaic components with the largest distance in each photovoltaic component group is less than the first preset distance.

[0030] Photovoltaic systems usually include photovoltaic modules, inverters, and controllers. Photovoltaic modules are used to convert solar energy into direct current, and the inverter then inverts the direct current output by the photovoltaic modules into alternating current to power electrical equipment or connect to the grid, while the controller is used to control the inverter, such as adjusting the frequency or amplitude of the alternating current output by the inverter. Since a photovoltaic system usually has more than one photovoltaic module, the larger the area of ​​the power station to be built where the photovoltaic system is installed, the more photovoltaic modules there are. The direct current output by each photovoltaic module needs to be inverted into alternating current by an inverter. If the inverters cannot be reasonably allocated to the photovoltaic modules, the cost of the inverter will be high. In addition, since the direct current output by each photovoltaic module is usually less than the capacity of the inverter, the efficiency of the inverter will also be reduced.

[0031] In order to solve the above technical problems, the photovoltaic modules in the power station are grouped in the present application. Specifically, the photovoltaic modules are divided into multiple photovoltaic module groups according to the location information of the photovoltaic modules, and each photovoltaic module group has at least one photovoltaic module. Based on this, one or more photovoltaic modules can be connected to an inverter at the same time. One inverter can invert the DC power output by multiple photovoltaic modules at the same time, which not only reduces the number of inverter settings, but also improves the working efficiency of the inverter.

[0032] Among them, when grouping photovoltaic components, they are automatically grouped according to the positions of each photovoltaic component, so that the distance between the two photovoltaic components with the largest distance in each photovoltaic component group is less than a first preset distance, so that the connection channel between each photovoltaic component in the photovoltaic component group corresponding to each inverter and the inverter is shorter, which saves costs and facilitates the installation of the inverter.

[0033] S12: Connecting each photovoltaic component in the same photovoltaic component group in series and / or in parallel to the same inverter, each photovoltaic component group corresponds to each inverter one by one, so that the inverter can invert the direct current output by each photovoltaic component connected to itself into alternating current; the first preset number of each photovoltaic component group is an integer greater than 1 based on the parameter setting of the inverter corresponding to the photovoltaic component group.

[0034] Each photovoltaic component group is respectively connected to an inverter. The number of photovoltaic components that can be accommodated in a photovoltaic component group is not unlimited, but a first preset number of photovoltaic component groups is set according to the parameters of the inverter connected to the photovoltaic component group. That is, each photovoltaic component group has at least one photovoltaic component, and the number of photovoltaic components is not greater than the first preset number. Of course, different photovoltaic component groups can be connected to different inverters. For example, if there are 10 photovoltaic modules in total, the inverter is divided into an inverter that can connect up to 6 photovoltaic modules and an inverter that can connect up to 4 photovoltaic modules. Therefore, the 10 photovoltaic modules can be divided into two groups, one of which has 6 photovoltaic modules, which are connected in parallel to the inverter that can connect 6 photovoltaic modules, and the other photovoltaic module has 4 photovoltaic modules, which are connected in parallel to the inverter that can connect 4 photovoltaic modules. Of course, if there are 10 photovoltaic modules in total and the inverter is only an inverter that can connect up to 4 photovoltaic modules, the 10 photovoltaic modules can still be divided into two groups, one of which has 6 photovoltaic modules, the first photovoltaic module is connected in series with the second photovoltaic module to form a first series path, the third photovoltaic module is connected in series with the fourth photovoltaic module to form a second series path, and the first series path, the second series path, the fifth photovoltaic module and the sixth photovoltaic module are connected in parallel to the inverter that can connect 4 photovoltaic modules.

[0035] It should be noted that if the inverter layout is performed manually, when the layout of the photovoltaic modules is readjusted, it is necessary to manually re-measure the distance between each photovoltaic module and re-plan the layout of the inverter. However, in the present application, the distance between each photovoltaic module is used for automatic layout of the inverter, and the corresponding inverter layout can be automatically planned after the layout of the photovoltaic modules is changed, thereby improving the layout efficiency and saving the time cost of the inverter layout.

[0036] In summary, in this application, the layout of the inverters can be automatically performed according to the positions of the various photovoltaic components, ensuring that the distance between the photovoltaic components connected to the same inverter is small. Reasonable inverter allocation reduces the inverter setting cost and has a high layout efficiency.

[0037] Based on the above embodiments:

[0038] As a preferred embodiment, each photovoltaic component is divided into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, including: S21: determining the position order of each photovoltaic component according to the position information of each photovoltaic component, and setting the second photovoltaic component as the current photovoltaic component according to the position order; S22: judging whether the number of photovoltaic components in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset number corresponding to the photovoltaic component group; S23: if it is not greater than the first preset number corresponding to the photovoltaic component group, then determining whether the distance between the current photovoltaic component and any photovoltaic component in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset distance based on the position information of the previous photovoltaic component of the current photovoltaic component and the position information of the current photovoltaic component; S24: if it is not greater than If the distance is greater than the first preset distance, the current photovoltaic component is divided into the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located, and the process goes to step S27; S25: if it is greater than the first preset distance, the current photovoltaic component is divided into a photovoltaic component group, and the process goes to step S27; S26: if it is greater than the first preset number corresponding to the photovoltaic component group, the current photovoltaic component is divided into a photovoltaic component group, and the process goes to step S27; S27: determine whether the current photovoltaic component is the last photovoltaic component in the position sequence; S28: if it is the last photovoltaic component, enter the step of connecting each photovoltaic component in the same photovoltaic component group in series and / or in parallel with the same inverter; S29: if it is not the last photovoltaic component, set the next photovoltaic component of the current photovoltaic component as the current photovoltaic component in the position sequence, and return to step S22.

[0039] When dividing each photovoltaic component into multiple photovoltaic component groups, the grouping can be specifically carried out according to the position order of each photovoltaic component. For example, each photovoltaic component is traversed according to the position order of each photovoltaic component, and the first photovoltaic component is first visited. The first photovoltaic component is first divided into a photovoltaic component group, and then the second photovoltaic component is visited. At present, there is only one photovoltaic component in the photovoltaic component group where the first photovoltaic component is located. If the first preset number corresponding to the photovoltaic component group where the first photovoltaic component is located is 4, and the distance between the second photovoltaic component and the first photovoltaic component is not greater than the first preset distance, the second photovoltaic component can be divided into the photovoltaic component group where the first photovoltaic component is located. By analogy, if the distance between the third photovoltaic component and the first photovoltaic component and the second photovoltaic component is not greater than the first preset distance, the third photovoltaic component is also divided into the photovoltaic component group where the first photovoltaic component and the second photovoltaic component are located; if the fourth photovoltaic component is If the distances between the fifth photovoltaic component and the first photovoltaic component, the second photovoltaic component, the third photovoltaic component and the fourth photovoltaic component are not greater than the first preset distance, the fourth photovoltaic component is also divided into the photovoltaic component group where the first photovoltaic component, the second photovoltaic component, the third photovoltaic component and the fourth photovoltaic component are located; if the distances between the fifth photovoltaic component and the first photovoltaic component, the second photovoltaic component, the third photovoltaic component and the fourth photovoltaic component are not greater than the first preset distance, but the number of photovoltaic components in the photovoltaic component group where the first photovoltaic component, the second photovoltaic component, the third photovoltaic component and the fourth photovoltaic component are located has reached the first preset number, then the fifth photovoltaic component is re-divided into a new photovoltaic component group; if the distance between the fourth photovoltaic component and any of the first photovoltaic component, the second photovoltaic component and the third photovoltaic component is greater than the first preset distance, the fourth photovoltaic component cannot be divided into the photovoltaic component group where the first photovoltaic component, the second photovoltaic component and the third photovoltaic component are located, but is re-divided into a new photovoltaic component group.

[0040] Based on this, it can ensure that the distance between each photovoltaic component in each photovoltaic component group is short, and the photovoltaic components connected to each inverter are located in a relatively compact position, which is convenient for later maintenance.

[0041] As a preferred embodiment, each photovoltaic component is divided into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, including: obtaining the position information of each photovoltaic component in the power station, determining the distance between each photovoltaic component based on the position information; determining the position order of each photovoltaic component according to the position information of each ungrouped photovoltaic component, and setting the first photovoltaic component as the current photovoltaic component according to the position order; determining the distance order of each photovoltaic component according to the distance between each ungrouped photovoltaic component and the current photovoltaic component, the distance order is the order of sorting from small to large according to the distance between each ungrouped photovoltaic component and the current photovoltaic component; grouping the first n photovoltaic components in the distance order and the current photovoltaic component into the same photovoltaic component group, and returning to the step of determining the position order of each photovoltaic component according to the position information of each ungrouped photovoltaic component, and setting the first photovoltaic component as the current photovoltaic component according to the position order; n is a first preset number.

[0042] In this embodiment, when the photovoltaic components are grouped into photovoltaic component groups, although they are also sorted according to the position information of each photovoltaic component, they are not sorted only according to the position order of each photovoltaic component, but the photovoltaic components with the closest distance are grouped into a photovoltaic component group. For example, according to the position order of each photovoltaic component, the first photovoltaic component is first determined, and then each photovoltaic component is re-sorted in the distance order according to the distance between it and the first photovoltaic component. At this time, the first photovoltaic component is still the first photovoltaic component determined according to the position order, and the distance between it and itself is 0. Therefore, it is still the first photovoltaic component, and the second photovoltaic component in the distance order is the first photovoltaic component among all photovoltaic components. The photovoltaic component with the smallest distance from the first photovoltaic component, the third photovoltaic component is the photovoltaic component with the smallest distance from the first photovoltaic component except the second photovoltaic component, and so on. If the first preset number is 4, the first 4 photovoltaic components are divided into a photovoltaic component group; if the photovoltaic components in the photovoltaic component group are the first photovoltaic component, the third photovoltaic component, the fourth photovoltaic component and the fifth photovoltaic component in the position sequence, then the first photovoltaic component after the photovoltaic components that are not grouped are re-arranged according to the position sequence is the second photovoltaic component in the original position sequence, and so on. The distance between the photovoltaic components in each photovoltaic component group is more compact and more cost-effective. It should be noted that when determining the distance between each photovoltaic component based on the position information, the distance between any two photovoltaic components is determined.

[0043] Please refer to Figure 2 , Figure 2 A schematic diagram of photovoltaic component grouping provided by the present invention. Figure 2It is shown that four photovoltaic modules can be grouped into one inverter, or two photovoltaic modules can be grouped into one inverter, depending on the number of photovoltaic modules that can be connected to the inverter. Figure 2 In the right triangle roof, one inverter can be connected to 4 photovoltaic modules or 3 photovoltaic modules. It can make full use of the resources of inverters and photovoltaic modules, avoid resource waste, optimize system configuration and improve the overall performance of the power station. Figure 2 You can select the inverter type and AC line model, and perform automatic wiring after selecting the inverter type and AC line model. You can choose to generate material information after wiring.

[0044] As a preferred embodiment, after dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, it also includes: dividing multiple adjacent photovoltaic component groups into a photovoltaic component set, the distance between the two photovoltaic components with the largest distance in each photovoltaic component set is less than the second preset distance, and the second preset distance is greater than the first preset distance; dividing each photovoltaic component in each photovoltaic component set into multiple series paths, and connecting each photovoltaic component in the same series path in series, and the number of series paths is not greater than the first preset number; connecting each photovoltaic component in the same photovoltaic component group in series and / or in parallel with the same inverter, and each photovoltaic component group corresponds to each inverter one by one, including: connecting each series path in the same photovoltaic component set in parallel with the same inverter, and each photovoltaic component set corresponds to each inverter one by one.

[0045] In this embodiment, multiple adjacent photovoltaic component groups are divided into a photovoltaic component set, so that one inverter can be connected to the photovoltaic components in the multiple photovoltaic component groups. Specifically, at this time, the photovoltaic components in the photovoltaic component set cannot be connected only in parallel, but must be connected in series first and then in parallel. Specifically, if there are four photovoltaic components in the first photovoltaic component group, namely the first photovoltaic component, the second photovoltaic component, the third photovoltaic component and the fourth photovoltaic component, and there are also four photovoltaic components in the second photovoltaic component group, namely the fifth photovoltaic component, the sixth photovoltaic component, the seventh photovoltaic component and the eighth photovoltaic component, the distance between the photovoltaic components with the largest distance between the first to the eighth photovoltaic components is less than the second preset distance. Although the second preset distance is greater than the first preset distance, the distance between each series path is still not greater than the first preset distance. If the photovoltaic component closest to the first photovoltaic component among the eight photovoltaic components is the second photovoltaic component, then the first photovoltaic component and the second photovoltaic component are connected in series to form a series path, and the photovoltaic component closest to the third photovoltaic component is the fourth photovoltaic component, then the third photovoltaic component and the fourth photovoltaic component are connected in series to form a series path. Accordingly, the fifth photovoltaic component and the sixth photovoltaic component are connected in series to form a series path, and the seventh photovoltaic component and the eighth photovoltaic component are connected in series to form a series path. The four series paths are then connected in parallel and then connected to the inverter to further reduce costs.

[0046] like Figure 3 and Figure 4 As shown, Figure 3 A schematic diagram of the inverter setting position provided by the present invention, wherein, when there are four photovoltaic modules in a photovoltaic module group, the four photovoltaic modules closest to each other are connected to the same inverter, and the inverter is set at the center position of the four photovoltaic modules. In addition, the inverter in this application can be a micro inverter. Figure 3 The photovoltaic panels in the photovoltaic module are photovoltaic modules. Figure 4A schematic diagram of the connection between a photovoltaic assembly set and an inverter provided by the present invention, such as four photovoltaic assemblies in a photovoltaic assembly group, two adjacent photovoltaic assembly groups are combined into a photovoltaic assembly set, and the inverter is set at the center of the eight photovoltaic assemblies. At this time, taking the inverter having four ports connected to the photovoltaic assemblies as an example, the eight photovoltaic assemblies are divided into four groups according to the distance, and two photovoltaic assemblies in each group are connected in series, so that each group of photovoltaic assemblies is connected to the inverter at the center position to ensure that the DC (Direct Current) line used between the series-connected photovoltaic assemblies is the shortest, and the AC line used to connect the photovoltaic assembly to the inverter is the shortest. Of course, if the inverter capacity is sufficient, more photovoltaic assembly groups can be combined and connected to one inverter to reduce the number of inverters set and reduce costs, which is specifically determined by the maximum voltage that the photovoltaic assembly can output and the maximum voltage that the inverter can carry. The connection methods of different models of inverters in this application can be different, ensuring a reasonable distribution between the inverter and the photovoltaic assembly. Figure 4 In the process, different types of inverters are used on the same roof, and each type of inverter automatically adapts to the corresponding connection method. This flexible processing method can avoid the waste of resources caused by model mismatch, improve the operating efficiency of the entire power station, bring users a more convenient experience, and reduce the time cost of design and debugging.

[0047] As a preferred embodiment, after the photovoltaic modules in the same photovoltaic module group are connected in series and / or in parallel to the same inverter, the method further includes: generating and displaying a layout planning diagram of the inverter.

[0048] In this embodiment, after the layout planning of the inverter is performed, a layout planning schematic diagram needs to be generated so that the user can view or modify it, and the inverter is installed according to the final layout planning schematic diagram.

[0049] Please refer to Figure 5 and Figure 6 , Figure 5 A schematic diagram of selecting a layout planning schematic diagram to download provided by the present invention, Figure 6 A layout planning schematic diagram provided by the present invention, from Figure 5 In the layout planning diagram, the user can select which elements to display in the layout planning diagram to make corresponding adjustments. In addition, the layout planning diagram can be a CAD (Computer Aided Design) diagram, such as selecting to display the buildings, obstacles and trees of the power station to be built in the generated CSD drawing, which is not limited in this application. The CAD drawing information can display the canvas, components (i.e. photovoltaic components), inverters, DC lines and AC lines, of course, this application does not limit this. Figure 6The CAD drawing not only shows the layout planning diagram of the inverter, but also shows the representation information of each symbol in the drawing, as well as the drawing party, drawing time, geographical location of the power station to be built, system capacity and other information.

[0050] As a preferred embodiment, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and then connected to the same inverter, it also includes: determining the center position of each photovoltaic component group, the center position being the position of the geometric center of the photovoltaic component group; and setting each inverter at the center position of the photovoltaic component group corresponding to itself.

[0051] In this embodiment, the inverter is arranged at the geometric center of the photovoltaic assembly group to ensure that the inverter is not far from each photovoltaic assembly in a photovoltaic assembly group, thereby saving connection costs and facilitating subsequent maintenance.

[0052] If the distance between the PV modules in each PV module group is relatively close, after the inverter is set at the center of the PV module group, the inverter and each PV module can be connected nearby. Figure 3 As shown, the length of the AC line between each photovoltaic module and the inverter is reduced, thereby reducing costs.

[0053] As a preferred embodiment, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and then connected to the same inverter, it also includes: dividing the inverters into at least one inverter group based on the position information of each inverter, each inverter group has at least one inverter, and the number of inverters is not greater than a second preset number, and the distance between the two inverters with the largest distance in each inverter group is less than the second preset distance; the second preset number is a parameter setting based on the AC line and is an integer greater than 1; the inverters in the same inverter group are connected in series through the same AC line, and each inverter group corresponds to each AC line one by one, so that the AC line transmits the alternating current output by each inverter connected to itself to the electrical equipment or the grid.

[0054] In this embodiment, not only the photovoltaic modules are grouped, but also the inverters are grouped, so that multiple inverters can be connected in series through the same AC line, and the AC power after the inverter is transmitted through one AC line, which reduces costs and improves transmission efficiency. This application provides multiple connection methods such as horizontal, vertical, and nearby, which can flexibly adjust the arrangement of DC lines and AC lines, such as Figure 2 Different roofs use multiple horizontal and nearby connection methods. The diverse connection methods provide users with more choices, and can be flexibly laid out according to actual conditions to meet the needs of different power station construction scenarios, thus improving the adaptability and practicality of the design.

[0055] It can be seen that in this embodiment, the maximum current / voltage that a device or cable can carry can be automatically calculated, and electrical safety is met through safe and effective connection. In addition, the automated layout design saves time and is more efficient and convenient for users to use.

[0056] Reference Figure 3 , Figure 3 There are multiple inverters that can be connected in series on the AC line, so that the alternating current output by multiple inverters can be superimposed and transmitted through one AC line. Of course, the number of inverters that can be connected to the same AC line is determined based on the maximum voltage that the AC line can transmit and the maximum voltage that each inverter can output.

[0057] As a preferred embodiment, after the photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and connected to the same inverter, it also includes: generating material requirement information of the power station based on the location information of each photovoltaic component, the location information of each inverter, the distance between the photovoltaic component and the inverter, and the distance between each inverter.

[0058] In this embodiment, after the inverter layout is completed, material requirement information is generated according to the materials used in the photovoltaic system, such as determining the length and number of DC lines connecting each photovoltaic module and the inverter, and the length and number of AC lines connecting each inverter and the power grid or power-consuming equipment according to the installation location of the inverter, so that subsequent users can prepare related items in advance when installing the inverter to avoid insufficient materials or increased costs caused by excessive material preparation. Please refer to Figure 7 , Figure 7 A material requirement information diagram provided by the present invention, the user can view the diagram to prepare the corresponding materials. That is, in this application, by automatically laying out the inverter, not only can the number of inverters be reduced, but also the length of the DC line required for connecting between photovoltaic modules and the length of the AC line required for connecting between photovoltaic modules and inverters can be reduced to save costs.

[0059] In summary, the present application can automatically provide users with the connection design between photovoltaic modules and inverters, and can determine the key elements such as the appropriate line direction, connection method, and cable specifications and lengths, so as to help users get rid of the confusion about the effective connection method between photovoltaic modules and inverters after the photovoltaic module layout is completed, and ensure the scientificity and rationality of the design. Provide different connection methods between inverters and between inverters and photovoltaic modules to conduct system analysis and optimization, and compare the advantages and disadvantages of various connection methods through scientific algorithms or models, so that different solutions can be evaluated and screened in the design stage, thereby helping users reduce costs. In view of the current status of long design cycles, low efficiency and high costs in the design process of professional design institutes, the present invention is committed to realizing one-button inverter automatic layout and routing planning functions in photovoltaic systems. By simplifying the design process, greatly shortening the design time, and significantly improving the overall efficiency and economy of photovoltaic system design, the rapid development of the photovoltaic industry can better meet the urgent need for efficient design. With the help of the inverter automatic layout and routing planning function, the detailed materials of the photovoltaic power station can be accurately calculated during the design stage, so that users can clearly know the material cost required to build the entire photovoltaic power station system and export a detailed bill of materials. CAD drawings can be directly exported to present the designed connection plan and related layout information in the form of intuitive and accurate CAD drawings, providing detailed and clear construction guidance for construction personnel, so that they can accurately understand the design intent, effectively avoid construction errors, improve construction efficiency and quality, and ensure that the construction of photovoltaic power stations proceeds smoothly according to design requirements.

[0060] Please refer to Figure 8 , Figure 8 A schematic diagram of the structure of an inverter layout system provided by the present invention, the system comprising: a grouping unit 81, used to divide each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station; each photovoltaic component group has at least one photovoltaic component, and the number of photovoltaic components is not greater than a first preset number corresponding to the photovoltaic component group; the distance between the two photovoltaic components with the largest distance in each photovoltaic component group is less than the first preset distance; an inverter allocation unit 82, used to connect each photovoltaic component in the same photovoltaic component group in series and / or in parallel with the same inverter, each photovoltaic component group corresponds to each inverter one by one, so that the inverter inverts the direct current output of each photovoltaic component connected to itself into alternating current; the first preset number of each photovoltaic component group is an integer greater than 1 and is a parameter setting based on the inverter corresponding to the photovoltaic component group.

[0061] For an introduction to the layout system of the inverter provided by the present invention, please refer to the above method embodiment, and the present invention will not be repeated here.

[0062] Reference Fig. 9 , Fig. 9 A schematic structural diagram of an inverter layout device provided by the present invention, the device comprises: a memory 91 for storing a computer program; a processor 92 for implementing the steps of the inverter layout method as described above when executing the computer program.

[0063] For an introduction to the layout device of the inverter provided by the present invention, please refer to the above method embodiment, and the present invention will not be repeated here.

[0064] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A layout method for an inverter, characterized in that: include: Based on the position information of each photovoltaic module in the power station, each photovoltaic module is divided into at least one photovoltaic module group according to one or more connection modes of horizontal, vertical and nearby; each photovoltaic module group has at least one photovoltaic module, and the number of photovoltaic modules is not greater than the first preset number corresponding to the photovoltaic module group; the distance between the two photovoltaic modules with the largest distance in each photovoltaic module group is less than the first preset distance; The photovoltaic components in the same photovoltaic component group are connected in series and / or in parallel and then connected to the same inverter, and each photovoltaic component group corresponds to each inverter one by one, so that the inverter inverts the direct current output by each photovoltaic component connected to itself into alternating current; the first preset number of each photovoltaic component group is an integer greater than 1 based on the parameter setting of the inverter corresponding to the photovoltaic component group; the inverter is a micro inverter; Based on the position information of each inverter, each inverter is divided into at least one inverter group according to one or more connection modes of horizontal, vertical and close proximity, each inverter group has at least one inverter, and the number of inverters is not greater than a second preset number, and the distance between the two inverters with the largest distance in each inverter group is less than a second preset distance; the second preset number is an integer greater than 1 and is set based on the parameters of the AC line; Connecting the inverters in the same inverter group in parallel to the same AC line, with each inverter group corresponding to each AC line one by one, so that the AC line transmits the alternating current output by each inverter connected to itself to the power-consuming equipment or the grid; Generate and display a layout planning diagram of the inverter; The material requirement information of the power station is generated based on the location information of each photovoltaic component, the location information of each inverter, the distance between the photovoltaic component and the inverter, and the distance between each inverter.

2. The inverter layout method according to claim 1, characterized in that: Dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station includes: S21: determining a position order of each photovoltaic component according to position information of each photovoltaic component, and setting the second photovoltaic component as a current photovoltaic component according to the position order; S22: determining whether the number of photovoltaic components in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset number corresponding to the photovoltaic component group; S23: If it is not greater than the first preset number corresponding to the photovoltaic component group, determining whether the distance between the current photovoltaic component and any photovoltaic component in the photovoltaic component group where the previous photovoltaic component of the current photovoltaic component is located is not greater than the first preset distance based on the position information of the previous photovoltaic component of the current photovoltaic component and the position information of the current photovoltaic component; S24: if it is not greater than the first preset distance, the current photovoltaic assembly is divided into the photovoltaic assembly group where the previous photovoltaic assembly of the current photovoltaic assembly is located, and the process goes to step S27; S25: if it is greater than the first preset distance, the current photovoltaic assembly is divided into one of the photovoltaic assembly groups, and the process goes to step S27; S26: if it is greater than the first preset number corresponding to the photovoltaic component group, the current photovoltaic component is divided into one of the photovoltaic component groups, and the process goes to step S27; S27: Determine whether the current photovoltaic component is the last photovoltaic component in the position sequence; S28: If it is the last photovoltaic component, then proceed to the step of connecting the photovoltaic components in the same photovoltaic component group in series and / or in parallel and then connecting them to the same inverter; S29: If it is not the last photovoltaic component, then set the next photovoltaic component of the current photovoltaic component as the current photovoltaic component according to the position sequence, and return to step S22.

3. The inverter layout method according to claim 1, characterized in that: Dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station includes: Acquire the position information of each photovoltaic module in the power station, and determine the distance between each photovoltaic module based on the position information; Determine the position order of each photovoltaic component according to the position information of each ungrouped photovoltaic component, and set the first photovoltaic component as the current photovoltaic component according to the position order; Determine a distance order of each photovoltaic component according to the distance between each ungrouped photovoltaic component and the current photovoltaic component, wherein the distance order is an order in which the distance between each ungrouped photovoltaic component and the current photovoltaic component is sorted from small to large; The first n photovoltaic components in the distance order are grouped with the current photovoltaic component in the same photovoltaic component group, and the position order of each photovoltaic component is determined according to the position information of each photovoltaic component that is not grouped, and the first photovoltaic component is set as the current photovoltaic component according to the position order; n is the first preset number.

4. The inverter layout method according to claim 1, characterized in that: After dividing each photovoltaic component into at least one photovoltaic component group based on the position information of each photovoltaic component in the power station, the method further includes: Divide the adjacent plurality of photovoltaic component groups into a photovoltaic component set, wherein the distance between the two photovoltaic components with the largest distance in each photovoltaic component set is less than a second preset distance, and the second preset distance is greater than the first preset distance; Divide each photovoltaic component in each photovoltaic component set into a plurality of series paths, and connect each photovoltaic component in the same series path in series, wherein the number of the series paths is not greater than the first preset number; The photovoltaic modules in the same photovoltaic module group are connected in series and / or in parallel to the same inverter, and each photovoltaic module group corresponds to each inverter one by one, including: The series paths in the same photovoltaic component set are connected in parallel and then connected to the same inverter, and each photovoltaic component set corresponds to each inverter one by one.

5. The inverter layout method according to any one of claims 1 to 4, characterized in that: After the photovoltaic modules in the same photovoltaic module group are connected in series and / or in parallel to the same inverter, the method further includes: Determine the center position of each photovoltaic assembly group, wherein the center position is the position of the geometric center of the photovoltaic assembly group; Each inverter is arranged at the center position of the photovoltaic component group corresponding to itself.

6. An inverter layout system, characterized in that: include: A grouping unit, configured to divide each photovoltaic assembly into at least one photovoltaic assembly group according to one or more connection modes of horizontal, vertical and nearby based on the position information of each photovoltaic assembly in the power station; each photovoltaic assembly group has at least one photovoltaic assembly, and the number of photovoltaic assemblies is not greater than a first preset number corresponding to the photovoltaic assembly group; and the distance between the two photovoltaic assemblies with the largest distance in each photovoltaic assembly group is less than the first preset distance; An inverter allocation unit is used to connect each photovoltaic assembly in the same photovoltaic assembly group in series and / or in parallel to the same inverter, and each photovoltaic assembly group corresponds to each inverter one by one, so that the inverter inverts the direct current output by each photovoltaic assembly connected to itself into alternating current; the first preset number of each photovoltaic assembly group is an integer greater than 1 based on the parameter setting of the inverter corresponding to the photovoltaic assembly group; the inverter is a micro inverter; The inverter layout system is also used for: Based on the position information of each inverter, each inverter is divided into at least one inverter group according to one or more connection modes of horizontal, vertical and close proximity, each inverter group has at least one inverter, and the number of inverters is not greater than a second preset number, and the distance between the two inverters with the largest distance in each inverter group is less than a second preset distance; the second preset number is an integer greater than 1 and is set based on the parameters of the AC line; Connecting the inverters in the same inverter group in parallel to the same AC line, with each inverter group corresponding to each AC line one by one, so that the AC line transmits the alternating current output by each inverter connected to itself to the power-consuming equipment or the grid; Generate and display a layout planning diagram of the inverter; The material requirement information of the power station is generated based on the location information of each photovoltaic component, the location information of each inverter, the distance between the photovoltaic component and the inverter, and the distance between each inverter.

7. A layout device for an inverter, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the inverter layout method as described in any one of claims 1 to 5 when executing a computer program.

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