CN111555338A

CN111555338A - Configuration method, device and equipment of electrical equipment and storage medium

Info

Publication number: CN111555338A
Application number: CN201911409027.5A
Authority: CN
Inventors: 徐宁; 胡燚杰; 张磊; 李舟生; 黄国昆; 孙捷
Original assignee: Shanghai Envision Innovation Intelligent Technology Co Ltd; Envision Digital International Pte Ltd
Current assignee: Shanghai Envision Innovation Intelligent Technology Co Ltd; Envision Digital International Pte Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-18
Anticipated expiration: 2039-12-31
Also published as: CN111555338B

Abstract

The application discloses a configuration method, a configuration device, equipment and a storage medium of electrical equipment, which belong to the technical field of photovoltaic power generation, wherein the method comprises the following steps: acquiring project capacity and grid-connected level of a target area; calculating the number of grid-connected points and the capacity of each grid-connected point in a target area according to the project capacity and the grid-connected level; determining a configuration scheme of an inverter and a box transformer substation under each grid-connected point according to the capacity of each grid-connected point; and determining the configuration scheme of the combiner box under each grid-connected point according to the grid-connected level. According to the technical scheme provided by the embodiment of the application, the method for automatically configuring the electrical equipment in the target area is realized. In addition, in the embodiment of the application, the configuration method of the electrical equipment is applied to the computer equipment, and after the computer equipment acquires the project capacity and the grid-connected level of the target area, the configuration scheme of the electrical equipment can be automatically determined, so that the configuration efficiency of the electrical equipment is improved.

Description

Configuration method, device and equipment of electrical equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of photovoltaic power generation, in particular to a configuration method, a configuration device, electrical equipment and a storage medium of the electrical equipment.

Background

In photovoltaic power plant design, according to the difference of design specialty, can divide into system design, electrical design and structural design.

At present, on the basis of the system design of a photovoltaic power station, some devices related to the photovoltaic power station need to be selected and configured, and the process of selecting and configuring the devices is called as electrical design. Generally, an electrical design relates to the selection of various electrical devices (such as an inverter, a junction box and a box transformer) and cables, and mainly comprises the selection of the junction box and the box transformer and the calculation of the cables, which are mutually related.

However, in the related art, manual configuration is often adopted for configuring the electrical devices, which is inefficient.

Disclosure of Invention

The embodiment of the application provides a configuration method, a configuration device, equipment and a storage medium of electrical equipment, which can be used for solving the technical problems of low efficiency caused by the adoption of a manual configuration method for the configuration of the electrical equipment in the related art. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a configuration method for an electrical device, which is applied to a computer device, and the method includes:

acquiring project capacity and grid-connected level of a target area, wherein the project capacity refers to the total capacity of photovoltaic modules contained in the target area, and the grid-connected level refers to the voltage level of a power grid accessed in the target area;

calculating the number of grid-connected points in the target area and the capacity of each grid-connected point according to the project capacity and the grid-connected level, wherein the capacity of the grid-connected points refers to the total capacity of each photovoltaic assembly under the grid-connected points;

determining a configuration scheme of an inverter and a box transformer substation under each grid-connected point according to the capacity of each grid-connected point;

and determining the configuration scheme of the combiner box under each grid-connected point according to the grid-connected level.

In another aspect, an embodiment of the present application provides an apparatus for configuring an electrical device, where the apparatus includes:

the data acquisition module is used for acquiring the project capacity and the grid-connected level of a target area, wherein the project capacity refers to the total capacity of photovoltaic modules contained in the target area, and the grid-connected level refers to the voltage level of a power grid accessed in the target area;

the grid-connected point calculation module is used for calculating the number of grid-connected points in the target area and the capacity of each grid-connected point according to the project capacity and the grid-connected level, wherein the capacity of each grid-connected point refers to the total capacity of each photovoltaic assembly included in the grid-connected point;

the inverter and box transformer substation configuration module is used for determining a configuration scheme of the inverter and the box transformer substation under each grid-connected point according to the capacity of each grid-connected point;

and the combiner box configuration module is used for determining the configuration scheme of the combiner box under each grid-connected point according to the grid-connected level.

In still another aspect, an embodiment of the present application provides a computer device, where the computer device includes a processor and a memory, where the memory stores a computer program, and the computer program is loaded by the processor and executed to implement the configuration method of the electrical device.

In yet another aspect, the present application provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the configuration method of the electrical device.

In a further aspect, the present application provides a computer program product, which when executed by a processor, is configured to implement the configuration method of the electrical device.

According to the technical scheme provided by the embodiment of the application, the number of the grid-connected points in the target area and the capacity of each grid-connected point are calculated according to the project capacity and the grid-connected level of the target area, then for each grid-connected point, the configuration scheme of the inverter and the box transformer substation is determined according to the capacity of the grid-connected point, and then the configuration scheme of the combiner box is determined according to the grid-connected level, so that the method for automatically configuring the electrical equipment in the target area is realized. In addition, in the embodiment of the application, the configuration method of the electrical equipment is applied to the computer equipment, and after the computer equipment acquires the project capacity and the grid-connected level of the target area, the configuration scheme of the electrical equipment can be automatically determined, so that the configuration efficiency of the electrical equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a block diagram of a photovoltaic system provided in an embodiment of the present application;

FIG. 2 is a flow chart of a method for configuring an electrical device provided by one embodiment of the present application;

FIG. 3 is a schematic view of a configuration interface of an electrical device provided by one embodiment of the present application;

FIG. 4 is a block diagram of a configuration device of an electrical apparatus provided in one embodiment of the present application;

fig. 5 is a block diagram of a configuration device of an electrical apparatus according to another embodiment of the present application;

fig. 6 is a block diagram of a computer device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Please refer to fig. 1, which shows a block diagram of a photovoltaic system according to an embodiment of the present application. The photovoltaic system may include: a photovoltaic module (Solar Panel)10, an Inverter (Inverter)20, a Combiner box (Combiner)30, a box Transformer (Transformer)40 and a Switch Gear (Switch Gear) 50.

The photovoltaic module 10, also called a solar panel, can convert solar energy into electric energy, and is a core part of a solar power generation system. In the embodiment of the present application, the photovoltaic module 10 may be disposed on a roof to receive solar radiation and collect solar energy. Alternatively, the photovoltaic module 10 may be plural to achieve sufficient reception of solar radiation and more solar energy collection.

An inverter 20 for converting dc power to ac power, the inverter 20 being substantially a dc-to-ac transformer. The solar energy can be converted into direct current through the photovoltaic module 10, and the inverter 20 converts the direct current output by the photovoltaic module 10 into alternating current for output.

And a junction box 30 for merging the output of the inverter to reduce the number of connection lines between the inverter 20 and the box transformer 40, and to reduce the length of the cable used, thereby reducing the cost of the electrical equipment arrangement. The type of the combiner box 30 is T in 1, T is used for indicating the number of inverters connected by a single combiner box, 1 is used for indicating the number of box transformers connected by a single combiner box, and T is a positive integer. In the embodiment of the present application, the larger T represents the larger the bus capacity of the bus box 30.

The box transformer 40 is also called a box transformer, a pre-installed substation, or a pre-installed substation. In the embodiment of the present application, the box transformer substation 40 may combine the plurality of combiner boxes 30 according to a certain wiring scheme, that is, the input end of the box transformer substation 40 is connected to the plurality of combiner boxes 30, and the output end of the box transformer substation 40 is connected to the switch device 50.

The switching device 50 is used for determining the working state of the photovoltaic system, when the switching device 50 is in an open state, the photovoltaic system is in the working state, and all components in the system work normally; when the switching device 50 is in the off state, the photovoltaic system is in a stop state, and the components in the system stop working. By arranging the switch device 50 in the photovoltaic system, the working state of the photovoltaic system can be flexibly controlled, and the photovoltaic system can be closed in time when the photovoltaic system is not needed, so that the power consumption of the photovoltaic system is reduced.

According to the technical scheme provided by the embodiment of the application, the execution main body of each step can be computer equipment, such as a server with calculation and storage capabilities, or a terminal such as a mobile phone, a tablet computer, multimedia playing equipment, wearable equipment and the like, and can also be other computer equipment. Optionally, when the computer device is a server, the computer device may be one server, a server cluster composed of a plurality of servers, or one cloud computing service center.

Referring to fig. 2, a flowchart of a configuration method of an electrical device according to an embodiment of the present application is shown, where the method may be applied to a computer device. The method comprises the following steps (210-240):

and step 210, acquiring the project capacity and the grid-connected level of the target area.

The target area is a predetermined area in which the electrical equipment needs to be configured, and the target area contains a plurality of photovoltaic modules. For an introduction and a description of the photovoltaic module, please refer to the above embodiment, which is not described herein again.

Project capacity, also called loader capacity or DC (Direct Current) capacity, refers to the total capacity of the photovoltaic modules contained in the target area, optionally, for convenience of representing the project capacity, the project capacity and the capacity of the photovoltaic modules can be represented in the form of power, i.e., the units of project capacity and the capacity of the photovoltaic modules are W (Watt), such as MW (Megawatt), kW (Kilowatt, kW). For example, the target area contains 4 photovoltaic modules, each having a capacity of 2MW, and the target area has a project capacity of 8 MW.

The grid-connected level refers to the voltage level of a power grid connected to a target area. The Voltage Class (Voltage Class) refers to the rated Voltage Class of the electrical system and the electrical equipment, and the unit is V (Volt), and the Voltage Class includes 220V, 380V, 6.3KV, 10KV, 35KV, 110KV, 220KV, 330KV, 500KV, 1000KV, and the like. Optionally, in the embodiment of the present application, in order to facilitate introduction of a configuration method of an electrical device, a grid connection level including two voltage levels, namely, a low voltage (380V) level and a medium voltage (10KV) level, is taken as an example for introduction.

And step 220, calculating the number of the grid-connected points in the target area and the capacity of each grid-connected point according to the project capacity and the grid-connected level.

The capacity of the grid-connected point refers to the total capacity of each photovoltaic module under the grid-connected point. The computer device can calculate the number of the grid-connected points in the target area and the capacity of each grid-connected point according to the project capacity and the grid-connected level. In one example, the step 302 includes: calculating the number of grid-connected points according to the project capacity and the grid-connected level; and determining the capacity of each grid-connected point according to the number of the grid-connected points.

In the embodiment of the application, in order to obtain an accurate calculation result, the number of the grid-connected points can meet the requirement of the project, the number of the grid-connected points is calculated by using a roundup function, and the roundup function is an upward rounding function, for example, the result of the roundup (0.2) is 1. Optionally, in order to adapt to different grid-connected levels, the number of grid-connected points is calculated differently for different grid-connected levels. Illustratively, when the grid-connected level is a medium voltage, the calculation method of the grid-connected point number is as follows: the number of grid-connected points is roundup (item capacity/6 MW). Illustratively, when the grid-connected level is low voltage, the calculation method of the number of grid-connected points is as follows: the number of dots to be connected is roundup (item capacity/0.4 MW).

After the computer device calculates the number of the grid-connected points, the computer device may allocate capacity to each grid-connected point according to the number of the grid-connected points, that is, determine the capacity of each grid-connected point.

Illustratively, when the grid-connected level is medium voltage, if the project capacity is an integral multiple of 6MW, the capacities allocated to each grid-connected point by the computer device are respectively 6 MW; if the item capacity is not an integral multiple of 6MW, the computer device allocates a remainder of 6MW, and 6MW … … to each grid-connected point, where the remainder is the remainder of dividing the item capacity by 6MW, that is, the computer device allocates a capacity of 6MW to each grid-connected point in sequence, and when the item capacity is allocated to the last grid-connected point, the difference is directly used as the capacity of the last grid-connected point when the total capacity of each allocated grid-connected point is less than 6MW subtracted from the item capacity. Alternatively, when the capacity of the grid-connected point is in MW, the remainder remains three bits after the decimal point, i.e., the check error is 0.001 MW. For example, the project capacity is 26.5MW, the computer device calculates the number of grid-connected points to be 5 according to the roundup function, and allocates capacities to each grid-connected point to be 6.000MW, and 2.500MW, respectively.

Illustratively, when the grid-connected level is low pressure, if the project capacity is an integral multiple of 400kW, the capacity allocated to each grid-connected point by the computer equipment is 400kW respectively; if the project capacity is not an integral multiple of 400kW, the computer equipment allocates 400kW, 400kW and 400kW … … remainders to each grid-connected point respectively, wherein the remainder is the remainder of dividing the project capacity by 400kW, namely, the computer equipment allocates 400kW to each grid-connected point in sequence, and when the project capacity is allocated to the last grid-connected point, the difference value is directly used as the capacity of the last grid-connected point when the total capacity of each distributed grid-connected point is less than 400 kW. Alternatively, when the capacity of the grid-connected point is in kW, the remainder is retained one digit after the decimal point, i.e., the verification error is 0.1 kW. For example, the project capacity is 2.7MW, the computer device calculates the number of the grid-connected points to be 7 according to the roundup function, and allocates capacities to each grid-connected point of 400.0kW, and 300.0kW, respectively.

And step 230, determining a configuration scheme of the inverter and the box transformer substation at each grid-connected point according to the capacity of each grid-connected point.

After determining the number of the grid-connected points and the capacity of each grid-connected point, the computer device configures the electrical devices for the grid-connected points. For each grid-connected point, the computer device can determine the number of inverters under each grid-connected point according to the capacity of the grid-connected point, and then determine the number and positions of the box transformers according to the number and positions of the inverters, thereby completing the configuration scheme of the inverters and the box transformers under the grid-connected point. For a detailed description of the configuration of inverters and transformers at each point-of-grid connection, please refer to the following alternative embodiments.

And 240, determining a configuration scheme of the combiner box under each grid-connected point according to the grid-connected level.

Because the output end access points of the combiner boxes are different under the grid-connected points with different grid-connected levels, the configuration scheme of the combiner box under each grid-connected point needs to be determined respectively according to different grid-connected levels. In the embodiment of the application, the computer equipment can automatically calculate the number, the type, the position and the like of the junction boxes under the grid-connected point according to the position of the grid-connected point under each grid-connected point and the configuration scheme of the inverter and the box transformer substation. For a detailed description of the arrangement of the combiner boxes at each point of connection, refer to the following alternative embodiments.

In summary, according to the technical scheme provided by the embodiment of the application, the number of the grid-connected points in the target area and the capacity of each grid-connected point are calculated according to the project capacity and the grid-connected level of the target area, then for each grid-connected point, the configuration scheme of the inverter and the box transformer substation is determined according to the capacity of the grid-connected point, and then the configuration scheme of the combiner box is determined according to the grid-connected level, so that the method for automatically configuring the electrical equipment in the target area is realized. In addition, in the embodiment of the application, the configuration method of the electrical equipment is applied to the computer equipment, and after the computer equipment acquires the project capacity and the grid-connected level of the target area, the configuration scheme of the electrical equipment can be automatically determined, so that the configuration efficiency of the electrical equipment is improved.

In addition, in the embodiment of the application, the number of the grid-connected points is calculated by the computer device according to the project capacity and the grid-connected level, and then the capacity of each grid-connected point is determined according to the number of the grid-connected points, so that a specific mode for determining the number of the grid-connected points and the capacity of each grid-connected point is provided.

In a possible embodiment, after the step 220, the following steps are further included:

in step 222, n roofs included in the target area are obtained, as well as the roof area and roof shape of each roof.

The target area is a predetermined area needing to be configured with electrical equipment, the target area comprises n roofs on which photovoltaic modules can be placed, and n is a positive integer greater than or equal to 1. Optionally, the computer device may obtain n roofs included in the target area through image processing, video processing, or the like, which is not limited in this embodiment of the present application, for example, a plurality of cameras are arranged in the target area, and the plurality of cameras may collect images or videos corresponding to the target area, send the collected images or videos to the computer device, and process the images or videos by the computer device to obtain n roofs included in the target area. In this embodiment of the application, when the computer device acquires n roofs, the roof area and the roof shape corresponding to each roof may also be acquired, and optionally, the roof area and the roof shape corresponding to each roof may also be acquired by the computer device through image processing or video processing.

Step 224, determining the grid-connected points corresponding to the n roofs according to the roof areas of the roofs, and numbering the n grid-connected points according to the numbers of the n roofs;

in the embodiment of the present application, the roofs and the grid-connected points may be in a one-to-one correspondence relationship, that is, one roof corresponds to one grid-connected point. Optionally, after obtaining the n roofs and the roof area corresponding to each roof, the computer device may sort the n roofs in order from large to small or from small to large according to the roof areas of the respective roofs, and then determine the grid-connected point corresponding to each roof according to a result of the sorting. Optionally, the computer device may determine a grid-connected point corresponding to each roof according to the result of the ranking and the capacity of each grid-connected point.

For example, assuming that the target area has 4 roofs, each of which has a corresponding area of 5, 4.5, 7, and 6.8 square meters, the 4 roofs are sorted in order from large to small to obtain 7, 6.8, 5, and 4.5 square meters, and optionally the 4 roofs are numbered by the computer device according to the sorting result, i.e., 7-ten-thousand square meters of roof 1, 6.8-ten-thousand square meters of roof 2, 5-ten-thousand square meters of roof 3, and 4.5-ten-thousand square meters of roof 4. Assuming that the computer device previously calculated that the target area has 4 grid-connected points, and the capacity of each grid-connected point is 6.000MW, 6.000MW and 2.500MW, the computer device determines that the roof 1 corresponds to a grid-connected point with a capacity of 6.000MW, the roof 2 corresponds to a grid-connected point with a capacity of 6.000MW, the roof 3 corresponds to a grid-connected point with a capacity of 6.000MW, and the roof 4 corresponds to a grid-connected point with a capacity of 2.500MW according to the results of the roof ranking and the capacity of each grid-connected point. After determining the grid-connected point corresponding to each roof, the computer device may also number n grid-connected points according to the numbers corresponding to the n roofs, that is, the grid-connected point corresponding to the roof 1 is the grid-connected point 1, the grid-connected point corresponding to the roof 2 is the grid-connected point 2, the grid-connected point corresponding to the roof 3 is the grid-connected point 3, and the grid-connected point corresponding to the roof 4 is the grid-connected point 4.

In one example, if the number y of the roofs is greater than the number x of the grid-connected points, sorting all the roofs from large to small according to the roof areas of the roofs, then sequentially determining the grid-connected points corresponding to the x roofs according to the sorting result, and not distributing the grid-connected points to the remaining y-x roofs; in another example, if the number y of roofs is less than the number x of grid-connected points, the user is enabled to manually modify the number of grid-connected points and the capacity of each grid-connected point until the number x of grid-connected points is less than or equal to the number y of roofs to perform the subsequent step of determining the grid-connected point corresponding to each roof. Wherein x and y are both positive integers.

Step 226, determining respective setting positions of the n grid-connected points according to the roof shape.

After determining the grid-connected point corresponding to each roof according to the roof area of each roof, the computer device may determine the setting position of the grid-connected point corresponding to each roof according to the roof shape of each roof. In the embodiment of the application, as the photovoltaic modules are arranged on the roofs, the grid-connected points can be arranged in the areas outside the roofs, so that the grid-connected points and the photovoltaic modules can be ensured to normally run.

In an exemplary embodiment, the step 226 includes the following sub-steps:

(1) for the mth roof among the n roofs, the centroid of the mth roof and the azimuth angle of the mth roof are obtained.

For any roof of the n roofs for which the grid-connected point has been determined, the setting position of the grid-connected point corresponding to the roof needs to be accurately determined according to the roof shape of the roof. For the mth rooftop, the computer device, after acquiring the mth rooftop, may determine a centroid and an azimuth of the rooftop. Alternatively, since the roof shape of each roof is a polygon, the centroid of the mth roof may be the center point of the polygon corresponding to the roof shape of the mth roof; because each side of the polygon corresponds to a normal, the direction corresponding to the soutest normal in the polygon corresponding to the mth roof can be determined in the embodiment of the application, and is the azimuth angle of the mth roof. It should be noted that the centroid and the azimuth angle of the mth roof may also be determined in other manners, such as determining the azimuth angle of the mth roof as the direction corresponding to the north-most normal of the polygonal normals, but all of them should fall within the scope of the present application.

For example, assuming that the mth rooftop is a rectangle, the intersection point of the diagonal lines of the rectangle may be determined as the centroid of the mth rooftop, and assuming that the normal directions of each side of the rectangle are 20 degrees south-east, 70 degrees south-west, 20 degrees north-west, and 70 degrees north-east, respectively, the direction of the south-most normal is determined, i.e., 20 degrees south-east is the azimuth angle of the mth rooftop.

(2) The closest midpoint connection to the azimuth of the mth roof is determined.

In the embodiment of the present application, the midpoint connecting line refers to a connecting line between the centroid of the mth roof and the centers of the edges of the mth roof. Optionally, when determining a midpoint connecting line closest to the azimuth of the mth roof, the computer device may first connect the centroid with the centers of the edges to obtain a center connecting line corresponding to each edge, and then determine a center connecting line closest to the azimuth among the center connecting lines; or the normal corresponding to the azimuth angle may be determined first, then the side corresponding to the normal is determined, and then the midpoint connecting line corresponding to the side is determined, where the midpoint connecting line is the midpoint connecting line closest to the azimuth angle of the mth roof, and this is not limited in this embodiment of the application.

(3) The connecting line is extended outward by k meters along the vector direction.

The vector direction refers to a direction in which the centroid of the mth roof points to the midpoint of each edge of the mth roof, and a vector direction of a midpoint connecting line closest to the azimuth angle of the mth roof, that is, a direction in which the centroid of the mth roof points to the midpoint of the edge corresponding to the midpoint connecting line. After determining the midpoint connecting line closest to the azimuth angle of the mth roof, the computer device extends the midpoint connecting line outwards along the vector direction of the midpoint connecting line by k meters, wherein k is a positive integer.

(4) And determining the end point of the connecting line as the setting position of the grid-connected point corresponding to the mth roof.

After extending the midpoint connecting line outwards for k meters along the vector direction, the computer device determines the end point of the extended midpoint connecting line, namely the other end point except the centroid of the mth roof in the extended midpoint connecting line, as the setting position of the grid-connected point corresponding to the mth roof. The specific value of k can be preset, for example, k is preset to be 5 m; for example, if a midpoint connecting line is a river with a width of 4 meters along the vector direction in the actual application scenario, k may be determined to be 8 meters, which is not limited in this embodiment of the present application.

In summary, according to the technical scheme provided by the embodiment of the present application, the grid-connected points corresponding to the roofs are determined according to the roof areas of the roofs in the target area by the computer device, and then the setting positions of the grid-connected points corresponding to the roofs are determined according to the roof shapes of the roofs, so that a manner of automatically determining the number of the grid-connected points and the capacity of each grid-connected point is provided. In addition, in the embodiment of the application, the setting position of the grid-connected point is determined according to the midpoint connecting line closest to the azimuth of the roof, so that the setting position of the grid-connected point is adaptive to the roof where the grid-connected point is located.

In another possible embodiment, the step 230 includes the following sub-steps:

step 232, for the s-th grid-connected point in the grid-connected points, determining the number of inverters under the s-th grid-connected point according to the position and capacity of the s-th grid-connected point.

After determining the number of the grid-connected points and the capacity of each grid-connected point, the computer device configures the electrical devices for the grid-connected points. For the s-th grid-connected point in the grid-connected points, the number of inverters under the grid-connected point is determined first, and s is a positive integer.

In the embodiment of the application, the target area corresponds to one inverter set, and inverters in the inverter set are distributed in the target area in a scattered manner. When the computer device determines the number of inverters at the s-th grid-connected point, z inverters closest to the s-th grid-connected point can be determined according to the position of the s-th grid-connected point, where z is a positive integer, and meanwhile, according to the capacity of the s-th grid-connected point, the number z of inverters determined by the computer device needs to satisfy: the product of z and the rated power of the inverter is less than or equal to the capacity of the s-th grid-connected point, and the product of z +1 and the rated power of the inverter is greater than the capacity of the s-th grid-connected point. After the computer device determines z inverters in the s-th grid-connected point through the steps, the z inverters can be deleted from the inverter set in the target area, so that the influence on the accuracy of the configuration of the electrical device caused by the fact that the inverter in the s-th grid-connected point is repeatedly determined as the inverter in the other grid-connected points when the computer device determines the inverters in the other grid-connected points is avoided.

And step 234, determining the maximum box variable under the s-th grid-connected point according to the number of the inverters under the s-th grid-connected point.

After determining the number z of inverters at the s-th grid-connected point, the computer device may determine, according to the number z, the maximum box variable at the s-th grid-connected point, that is, the maximum number of box variables that can be configured at the s-th grid-connected point. Optionally, the maximum box variable number at the s-th grid-connected point may be calculated by using a roundup function, and the maximum box variable number is calculated by the following formula: for a description of the run function, the maximum tank variable is run (z × rated power/2500 of inverter) +1, please refer to the above alternative embodiments, and will not be described herein.

And 236, determining the number and the type of the box transformer at the s-th grid-connected point according to the maximum box variable number and the type of the box transformer.

The box transformer type is used for distinguishing the capacity of the box transformer, different box transformer types correspond to different box transformer capacities, and optionally, the box transformer type can be represented by the box transformer capacity, for example, the box transformer type can be 500kVA (kilovolt ampere), 630kVA, 1000kVA, 1250kVA, 1600kVA, 2000kVA, 2500kVA, and the like.

In the configuration of the electrical equipment, the box transformer substation at each grid-connected point needs to satisfy two conditions: firstly, the sum of the capacities of the box transformer is larger than or equal to the product of the number of the inverters and the rated power of the inverters; second, the sum of the prices of the box changes is the lowest among all the combination scenarios. After determining the maximum box variable number at the s-th grid-connected point, the computer device may determine, according to the maximum box variable number, possible box-to-substation combinations at the s-th grid-connected point, where each box-to-substation combination includes the number of box-to-substation and the model of each box-to-substation, and at this time, the box-to-substation needs to satisfy the first condition. Since the prices of the box transformers of different models are different, in order to reduce the cost of the electrical equipment, the computer equipment needs to select the box transformer combination with the lowest total price from all possible box transformer combinations, that is, determine the box transformer combination meeting the second condition.

And 238, determining the position of the box transformer substation at the s-th grid-connected point according to the position of the inverter at the s-th grid-connected point.

There are a plurality of inverters and a plurality of case becomes under the s grid-connected point, and this application embodiment needs to establish corresponding relation between a plurality of inverters and a plurality of case becomes. For each box transformer substation at the s-th grid-connected point, determining a inverters from the s-th grid-connected point according to the type of the box transformer substation, namely the capacity of the box transformer substation, wherein the quantity a meets the following requirements: the product of a and the rated power of the inverter is less than or equal to the capacity of the box transformer substation b, and the product of a +1 and the rated power of the inverter is greater than the capacity of the box transformer substation b, wherein a and b are positive integers. Optionally, when determining the a inverters corresponding to the box transformer substation b, the computer device may determine the order from the left top corner of the range of the s-th grid-connected point to the left, the right, and from top to bottom, and after determining the a inverters corresponding to the box transformer substation b, the computer device may delete the a inverters from the set of inverters at the s-th grid-connected point, so as to avoid a situation that the same inverter corresponds to different box transformers when determining the inverters corresponding to other box transformers.

In the embodiment of the application, the position of the box transformer substation is located between the setting position of the grid-connected point and the position of the connected inverter, and the closer to the inverter, the better, so as to reduce the length of a cable for connecting electrical equipment.

In one example, the step 238 includes the following sub-steps:

(1) and calculating the mass center of the inverter under the s-th grid-connected point according to the position of the inverter under the s-th grid-connected point.

The computer device can calculate the mass center of the inverter at the s-th grid-connected point according to the position of each inverter at the s-th grid-connected point. Optionally, the centroid of the inverter at the s-th grid-connected point may be a central point of a polygon connecting the inverters at the s-th grid-connected point, in this embodiment of the present application, after determining the position of each inverter at the s-th grid-connected point, the computer device connects each inverter, and may form a polygon, and the central point of the polygon may be determined as the centroid of the inverter at the s-th grid-connected point.

(2) And taking the mass center of the inverter under the s-th grid-connected point as a starting point, taking rays to the position of the s-th grid-connected point, and determining the intersection point between the rays and the roof.

Since the centroid of the inverter is usually within the rooftop polygon and the setting position of the s-th grid-connected point is outside the rooftop polygon, the computer device may determine at least one intersection point between the ray and the rooftop by taking the centroid of the inverter under the s-th grid-connected point as a starting point and taking a ray to the setting position of the s-th grid-connected point.

(3) And determining the intersection point which is farthest from the s-th grid-connected point from the intersection points between the rays and the roof as the target intersection point.

The target intersection is an intersection closest to the inverter at the s-th grid-connected point, and the computer device may select an intersection farthest from the setup position of the grid-connected point from at least one intersection of the ray and the roof, and determine the intersection as the target intersection.

(4) And extending the target intersection point outwards by p meters along the direction of the ray, and determining the target intersection point subjected to extension processing as the position of the box transformer substation under the s-th grid-connected point.

Because the box-type transformer is bulky and heavy, and is typically placed on the ground, the computer equipment locates the box-type transformer off the roof. In the embodiment of the application, after the computer device determines the target intersection point, the target intersection point is extended outwards by p meters along the ray direction, p is a positive integer, the target intersection point after the extension processing is located outside a roof, and the computer device determines the target intersection point after the extension processing as the position of the box transformer substation under the s-th grid-connected point. The specific value of p can be preset, for example, p is preset to be 5 m; for example, if the target intersection point is a road 5 meters wide along the direction of the ray in the actual application scenario, p may be determined to be 10 meters, which is not limited in the embodiment of the present application.

In summary, according to the technical scheme provided by the embodiment of the application, the number of the inverters at the grid-connected point is determined by the computer device according to the position and the capacity of the grid-connected point, then the number and the model of the box transformer at the grid-connected point are determined according to the number and the model of the box transformer, and then the position of the box transformer at the grid-connected point is determined according to the position of the inverter at the grid-connected point, so that a specific configuration scheme of the inverter and the box transformer is provided. In addition, in the embodiment of the application, the position of the box transformer substation is determined according to the positions of the inverters at the grid-connected point and the position of the grid-connected point, so that the position of the box transformer substation is adaptive to the grid-connected point.

In yet another possible embodiment, the step 240 includes the following sub-steps:

and 242, determining an output end access point of the combiner box under the t-th grid-connected point according to the grid-connected level for the t-th grid-connected point in the grid-connected points.

The output end access point of the combiner box is a low-voltage access point of the combiner box, for grid-connected points with different grid-connected levels, the output end access point of the combiner box under the grid-connected point is different, for the t-th grid-connected point in a target area, the computer equipment can specifically determine the output end access point of the combiner box under the grid-connected point according to the grid-connected level of the grid-connected point, and t is a positive integer.

Optionally, the step 242 includes: when the grid-connected level is the medium-voltage, determining that an output end access point of a combiner box under the t grid-connected point is the position of a box transformer substation under the t grid-connected point; and when the grid-connected level is low-voltage, determining that an output end access point of the combiner box under the t-th grid-connected point is the position of the t-th grid-connected point. In the embodiment of the application, the output end access point of the junction box has two possibilities, namely, the position of the box transformer substation and the position of a grid-connected point, and when the grid-connected level is medium-voltage, the output end access point of the junction box is determined to be the position of the box transformer substation, namely, the low-voltage access point of the junction box is accessed to the box transformer substation; and when the grid-connected level is low-voltage, determining that the output end access point of the junction box is the position of the grid-connected point, namely the low-voltage access point of the junction box is directly accessed to the grid-connected point.

Step 244, calculating the distance L between each inverter and the output end access point of the combiner box according to the position of the inverter at the t-th grid connection point_i。

In the embodiment of the application, the inverters are distributed under the tth grid-connected point in a dispersed manner, and after the computer device determines the output end access point of the combiner box according to the grid-connected level of the grid-connected point, the distance L between each inverter and the output end access point of the combiner box under the tth grid-connected point can be calculated_i，L_iIs a positive number, and i is a positive integer. Optionally, the computer device calculates the distance L_iThereafter, the distance L may be adjusted_iAnd sequencing from large to small or from small to large so that the computer equipment can carry out subsequent processing steps according to the sequencing result.

And step 246, determining the model of the combiner box under the t-th grid-connected point according to the minimum value of the distance.

The type of the combiner box is used for indicating the combiner function that the combiner box can realize, for example, when the type of the combiner box is Tn 1, the combiner box can realize that the output of the T inverters is combined, T is a positive integer, wherein the larger the value of T is, the larger the combiner function of the combiner box is. Optionally, the types of the combiner box include 5 in 1, 4 in 1, 3 in 1, 2 in 1, and the like.

In the configuration of the electrical equipment, the combiner box under each grid-connected point needs to satisfy three conditions: firstly, the outlet section and the pressure drop of the combiner box need to meet preset conditions, and the preset conditions can be set when the combiner box leaves a factory or specifically determined according to actual application projects, and the embodiment of the application is not limited to the preset conditions; secondly, the current collecting function of the current collecting box is as large as possible on the premise that the first condition is met; third, the bus function of the bus box from the output access point should be as large as possible. In the embodiment of the application, the computer device can calculate the longest outgoing line distances of the combiner boxes of different models according to the outgoing line cross sections of 3 × 185 square millimeters according to the default configuration of the cable material and the cable voltage drop, assuming that the longest outgoing line distances corresponding to the combiner boxes of 5-in 1, 4-in 1, 3-in 1 and 2-in 1 models are respectively L5, L4, L3 and L2, and L5< L4< L3< L2 exists.

Computer equipment determining distance L_iAfter the minimum value of (A) and the longest distance of the outgoing lines of the combiner boxes of different models, the distance L is determined_iThe minimum value of the three-dimensional grid-connected point is within the longest distance range of the outgoing line, and the model of the confluence box corresponding to the longest distance of the outgoing line is determined as the model of the confluence box under the t-th grid-connected point. For example, assume that in the t-th grid-connected point, the distance L_iIs 10 meters, the longest distance of the outgoing lines of the combiner boxes of different models is respectively L5-5 meters, L4-9 meters, L3-12 meters and L2-20 meters, and then the distance L is determined_iThe minimum value of the three-way valve falls into the range of the longest distance L3 of the outgoing lines, and the 3-in 1-way header box corresponding to the longest distance L3 of the outgoing lines is determined as the model of the header box under the t-th grid-connected point.

Step 248, determine whether the input access point of the combiner box at the tth grid-connected point meets all the requirements for accessing the inverter.

Because the input access points of the combiner box are at least two, after the model of the combiner box is determined, the computer equipment also needs to determine whether the input access points of the combiner box meet the requirement of completely accessing the inverter, so that the situations that the input access points of the combiner box are suspended and resources are wasted are avoided, and the accuracy of electrical configuration is ensured.

Step 248B, if the input end access points of the combiner box under the t-th grid-connected point meet the requirement that all inverters are accessed, determining the position of the combiner box under the t-th grid-connected point as the position of the inverter corresponding to the minimum value of the distance.

In the embodiment of the application, the distance L is removed under the t-th grid-connected point_iIf the distance of the input end of the combiner box falls into the determined longest distance range of the outgoing lines of the combiner box, determining that the input end access point of the combiner box under the t-th grid-connected point meets the condition that all the input end access points are connected into the inverter, and enabling the distance L to be within the range_iThe position of the inverter corresponding to the minimum value of (a) is determined as the position of the junction box at the t-th grid-connection point.

Step 248D, if the input end access points of the combiner box under the t-th grid-connected point do not meet all the access of the inverters, the model of the combiner box under the t-th grid-connected point is changed, and the execution is started from the step of determining whether the input end access points of the combiner box under the t-th grid-connected point meet all the access of the inverters.

In the embodiment of the application, the distance L is removed under the t-th grid-connected point_iIf there is a distance that does not fall within the determined longest distance range of the outlet lines of the combiner boxes, it is determined that the input access point of the combiner box at the t-th grid-connected point does not satisfy all the access to the inverter, at this time, the computer device changes the model of the combiner box at the t-th grid-connected point, optionally, the computer device changes the model of the combiner box to the model corresponding to the combiner box with a larger combiner function, for example, it is assumed that the distance L is a distance within which the input access point of the combiner box at the t-th grid-connected_iIf the type of the combiner box determined by the minimum value of (1) is 4 in 1, the input end access point of the combiner box under the t-th grid-connected point is not fullWhen all the grid-connected points are connected with the inverter, the computer equipment determines that the model of the combiner box under the t-th grid-connected point is changed to be 3-in-1. After the model of the combiner box is changed, the computer equipment starts to execute the step of determining whether the input end access point of the combiner box under the t-th grid-connected point meets all the access inverters or not again until the input end access point of the combiner box under the t-th grid-connected point meets all the access inverters. Optionally, if the t-th dot-under-grid distance L_iIf a certain distance exceeds the longest outlet line distance L2, the inverter corresponding to the distance is determined to be abandoned to be connected into the combiner box, and is directly connected into the output end access point of the combiner box.

In summary, according to the technical scheme provided by the embodiment of the application, the output end access point of the combiner box under the grid-connected point is determined according to the grid-connected level of the grid-connected point, then the model of the combiner box under the grid-connected point is determined according to the distance between the inverter and the output end access point under the grid-connected point, and then the position of the combiner box is determined by determining whether the input end access point of the combiner box meets the condition, so that the specific configuration mode of the combiner box is provided. In addition, in the embodiment of the application, different bus box output end access points are provided for different grid-connected grades, so that the bus box output end access points are adaptive to the grid-connected grades.

In yet another possible implementation, the number of and capacity of each point-of-presence supports modifications, i.e., the user may modify the number of and capacity of each point-of-presence according to personalized needs. In the embodiment of the application, a setting interface of electrical configuration is correspondingly arranged in the computer device, after the number of the grid-connected points and the capacity of each grid-connected point are calculated by the computer device, the number of the grid-connected points and the capacity of each grid-connected point can be displayed to a user on the setting interface of the electrical configuration, if the user wants to modify the number of the grid-connected points or the capacity of a certain grid-connected point, the required number of the grid-connected points or the capacity of the grid-connected point can be input in the setting interface, and then the electrical configuration is updated, so that the modification of the number of the grid-connected points and/or the capacity of each grid-connected point can be completed. For example, as shown in fig. 3, a setting interface 310 of the electrical configuration is displayed in the computer device, the setting interface 310 displays an inputtable button 320 and an inputtable button 330, the user can modify the number of the connected points by clicking the button 320, the capacity of each connected point by clicking the button 330, and the setting interface 310 also displays an update button 340, and the user can update the number of the connected points and the capacity of each connected point in the computer device by clicking the update button 340 to complete the modification.

Optionally, the capacity of each grid-connected point may be automatically modified following the modification of the number of the grid-connected points, that is, the user only needs to modify the number of the grid-connected points to the number of the grid-connected points required by the user, and the computer device may automatically modify the capacity of each grid-connected point according to the number of the grid-connected points modified by the user. Optionally, the number of the grid-connected points calculated by the computer device at first is the minimum value of the number of the grid-connected points calculated according to the item capacity, and if the user needs to modify the number of the grid-connected points, only the number of the grid-connected points can be increased. Optionally, the computer device defaults that the capacity of the newly added grid-connected point is zero, and the user can further modify the capacity of each grid-connected point, so that more space for autonomous selection can be provided for the user. Optionally, in the second and later modifications of the user, the number of the connected nodes may be reduced, and here, the computer device may delete a target number of the connected nodes from the existing connected nodes according to a certain order, such as the number of the connected nodes, and default that the capacities of other connected nodes are not changed, and the user may further modify the capacity of each connected node, where the target number refers to the difference between the number of the connected nodes before the user modifies and the number of the connected nodes after the user modifies.

Optionally, when the computer device updates the electrical configuration according to the modification of the user, it may check whether the number of the grid-connected points and the capacity of each grid-connected point meet requirements, that is, whether the sum of the capacities of all the grid-connected points is equal to the item capacity, and if the check is passed, that is, the sum of the capacities of all the grid-connected points is equal to the item capacity, display a first prompt message on a setting interface of the electrical configuration, where the first prompt message is used to prompt the user that the check is passed; if the verification fails, that is, the sum of the capacities of all the grid-connected points is smaller than or larger than the project capacity, displaying second prompt information on a setting interface of the electrical configuration, where the second prompt information is used to prompt the user that the verification fails, where the first prompt information and the second prompt information may be different in color except for different contents, for example, the first prompt information is a green font, and the second prompt information is a red font, so as to more prominently prompt the user of the verification result, which is not limited in the embodiment of the present application. Optionally, if the verification passes, the first prompt message may not be displayed, so as to reduce the processing overhead of the computer device.

In another possible embodiment, the model of the box transformer also supports modification, that is, the user can adjust the model of the box transformer according to personalized requirements. In the embodiment of the application, a setting interface of electrical configuration corresponds to the computer equipment, a button for selecting the box transformer substation type corresponds to the setting interface, and a user can check the current box transformer substation type by clicking the button and modify the current box transformer substation type. For example, as shown in fig. 3, a setting interface 310 of the electrical configuration is displayed in the computer device, a box-type-selection-place button 350 is displayed in the setting interface 310, a box-type-selection dialog box 360 can pop up when a user clicks the box-type-selection button 350, and in the box-type-selection-dialog box 360, the user can view the number of box-type-changes and the model number of each box-type-change at each grid-connected point. A drop-down button 370 is also provided in the box change selection dialog box 360, and the user can select and modify the model of the box change by clicking on the drop-down button 370. A submit button 380 is further provided in the box transformer type selection dialog box 360, and after the user completes the modification, the user can complete the modification of the box transformer type by clicking the submit button 380.

Optionally, when the model of the box transformer substation is updated according to the modification of the user, the computer device may check whether the model of the box transformer substation selected by the user meets the requirement, and for specific requirements of the box transformer substation on model selection, reference is made to the above-mentioned optional embodiment, which is not described herein again. If the box transformer substation type selection meets the requirement, displaying third prompt information in the box transformer substation type selection dialog box, where the third prompt information is used to prompt the user that the box transformer substation type selection meets the requirement, for example, as shown in fig. 3, a third prompt information 390 is displayed in the box transformer substation type selection dialog box 360, and the third prompt information 390 is used to prompt the user that the modified box transformer substation type selection meets the requirement; if the box transformer substation type selection does not meet the requirement, fourth prompt information is displayed in a box transformer substation type selection dialog box, the fourth prompt information is used for prompting a user that the box transformer substation type selection does not meet the requirement and needs to be revised again, wherein the third prompt information and the fourth prompt information have different contents and different font colors, and if the third prompt information adopts a green font and the fourth prompt information adopts a red font, the user is reminded of the verification result of the box transformer substation type selection more prominently. Optionally, if the verification passes, the first prompt message may not be displayed, so as to reduce the processing overhead of the computer device.

In summary, the technical scheme provided by the embodiment of the application satisfies that the user autonomously sets the number of the grid-connected points, the capacity of each grid-connected point and the model selection of the box transformer according to the personalized requirements by supporting the user to manually modify the number of the grid-connected points, the capacity of each grid-connected point and the model selection of the box transformer. In addition, in the embodiment of the application, the computer device can check the modification of the user and display the prompt information after the check is finished, wherein the prompt information is used for prompting the user whether the modification meets the requirement of the project configuration or not so as to ensure that the modification can be processed in time when the modification does not meet the requirement of the project configuration.

The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.

Referring to fig. 4, a block diagram of a configuration apparatus of an electrical device according to an embodiment of the present application is shown. The apparatus 400 has functions of implementing the above method embodiments, and the functions may be implemented by hardware or by hardware executing corresponding software. The apparatus 400 may be a computer device as described above. The apparatus 400 may include: the system comprises a data acquisition module 410, a grid-connected point calculation module 420, an inverter and box transformer configuration module 430 and a combiner box configuration module 440.

The data acquisition module 410 is configured to acquire a project capacity and a grid-connected level of a target area, where the project capacity refers to a total capacity of photovoltaic modules included in the target area, and the grid-connected level refers to a voltage level of a power grid connected to the target area.

And a grid-connected point calculating module 420, configured to calculate, according to the project capacity and the grid-connected level, the number of grid-connected points in the target area and the capacity of each grid-connected point, where the capacity of a grid-connected point refers to a total capacity of each photovoltaic module included in the grid-connected point.

And the inverter and box transformer substation configuration module 430 is configured to determine a configuration scheme of the inverter and box transformer substation at each grid-connected point according to the capacity of each grid-connected point.

And the combiner box configuration module 440 is configured to determine a configuration scheme of the combiner box under each grid-connected point according to the grid-connected level.

Optionally, the point-of-presence calculation module 420 is configured to: calculating the number of the grid-connected points according to the project capacity and the grid-connected level; and determining the capacity of each grid-connected point according to the number of the grid-connected points.

Optionally, as shown in fig. 5, the apparatus 400 further includes: a roof acquiring module 450, configured to acquire n roofs included in the target area, and a roof area and a roof shape of each roof, where n is a positive integer greater than or equal to 1; a relation determining module 460, configured to determine, according to the roof area of each roof, the grid-connected points corresponding to the n roofs, and number the n grid-connected points according to the numbers of the n roofs; a setting position determining module 470, configured to determine the respective setting positions of the n grid-connected points according to the roof shape.

Optionally, as shown in fig. 5, the setting position determining module 470 is configured to: for an mth roof in the n roofs, acquiring a centroid of the mth roof and an azimuth angle of the mth roof, wherein m is a positive integer; determining a midpoint connecting line closest to the azimuth angle of the mth roof, wherein the midpoint connecting line is a connecting line between the centroid of the mth roof and the centers of all the edges of the mth roof; extending the connecting line outwards for k meters along a vector direction, wherein the vector direction is a direction in which a centroid of the mth roof points to a midpoint of each edge of the mth roof, and k is a positive integer; and determining the end point of the connecting line as the setting position of the grid-connected point corresponding to the mth roof.

Optionally, as shown in fig. 5, the inverter and box transformer configuration module 430 includes: the inverter determination submodule 432 is configured to, for an s-th grid-connected point in the grid-connected points, determine the number of inverters in the s-th grid-connected point according to a position and a capacity of the s-th grid-connected point, where s is a positive integer; a maximum box variable determining submodule 434, configured to determine a maximum box variable in the s-th grid-connected point according to the number of inverters in the s-th grid-connected point; the box transformer substation number determining submodule 436 is configured to determine the number and the model of the box transformer substation in the s-th grid-connected point according to the maximum box variable number and the model of the box transformer substation; and a box transformer substation position determining submodule 438, configured to determine a position of the box transformer substation at the s-th grid-connected point according to the position of the inverter at the s-th grid-connected point.

Optionally, as shown in fig. 5, the box transformer position determining module 438 is configured to: calculating the mass center of the inverter under the s-th grid-connected point according to the position of the inverter under the s-th grid-connected point; taking the mass center of the inverter under the s-th grid-connected point as a starting point, taking rays to the position of the s-th grid-connected point, and determining the intersection point between the rays and the roof; determining an intersection point which is farthest from the s-th grid-connected point among intersection points between the rays and the roof as a target intersection point; and extending the target intersection point outwards by p meters along the direction of the ray, and determining the target intersection point subjected to extension processing as the position of the box transformer under the s-th grid-connected point, wherein p is a positive integer.

Alternatively, as shown in fig. 5, the combiner box arrangement module 440 includes: access point determinationA module 442, configured to determine, for a t-th grid-connected point in the grid-connected points, an output end access point of a combiner box in the t-th grid-connected point according to the grid-connected level, where t is a positive integer; a distance calculating submodule 444, configured to calculate, according to the position of the inverter at the t-th grid-connected point, a distance L between each inverter and an output end access point of the combiner box_iSaid L is_iIs a positive number, and i is a positive integer; the model determining submodule 446 is used for determining the model of the combiner box under the t-th grid-connected point according to the minimum value of the distance; a condition determining submodule 448, configured to determine whether all input access points of the combiner box at the tth grid-connected point meet a requirement for accessing the inverters; the condition determining submodule 448 is further configured to determine that the position of the combiner box at the tth grid-connected point is the position of the inverter corresponding to the minimum value of the distance when all input end access points of the combiner box at the tth grid-connected point are connected to the inverters; the condition determining submodule 448 is further configured to, when the input end access point of the combiner box in the tth grid-connected point does not satisfy all the access inverters, change the model of the combiner box in the tth grid-connected point, and start execution from the step of determining whether the input end access point of the combiner box in the tth grid-connected point satisfies all the access inverters again.

Optionally, as shown in fig. 5, the access point determining sub-module 442 is configured to: when the grid-connected level is the medium-voltage level, determining that an output end access point of a combiner box under the t-th grid-connected point is the position of a box transformer substation under the t-th grid-connected point; and when the grid-connected level is low-voltage, determining that an output end access point of a combiner box under the tth grid-connected point is the position of the tth grid-connected point.

It should be noted that, in the device provided in the embodiment of the present application, when the functions of the device are implemented, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.

Referring to fig. 6, a block diagram of a computer device provided in an embodiment of the present application is shown. The computer device may be used to implement the method of configuring an electrical device provided in the above embodiments. The computer device may be, for example, a terminal in the implementation environment shown in FIG. 1. Specifically, the method comprises the following steps:

the computer device 600 includes a Processing Unit (e.g., a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an FPGA (Field Programmable gate array), etc.) 601, a system Memory 604 including a RAM (Random-Access Memory) 602 and a ROM (Read-Only Memory) 603, and a system bus 605 connecting the system Memory 604 and the Central Processing Unit 601. The computer device 600 also includes an I/O System (basic Input/Output System) 606 to facilitate information transfer between various devices within the server, and a mass storage device 607 for storing an operating System 613, application programs 614, and other program modules 615.

The I/O system 606 includes a display 608 for displaying information and an input device 609 such as a mouse, keyboard, etc. for a user to input information. Wherein the display 608 and the input device 609 are connected to the central processing unit 601 through an input output controller 610 connected to the system bus 605. The I/O system 606 may also include an input/output controller 610 for receiving and processing input from a number of other devices, such as a keyboard, mouse, or electronic stylus. Similarly, input/output controller 610 may also provide output to a display screen, a printer, or other type of output device.

The mass storage device 607 is connected to the central processing unit 601 through a mass storage controller (not shown) connected to the system bus 605. The mass storage device 607 and its associated computer-readable media provide non-volatile storage for the computer device 600. That is, the mass storage device 607 may include a computer-readable medium (not shown) such as a hard disk or CD-ROM (Compact disk Read-Only Memory) drive.

Without loss of generality, the computer readable media may comprise computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state Memory technology, CD-ROM, DVD (Digital Video Disc) or other optical, magnetic, tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that the computer storage media is not limited to the foregoing. The system memory 604 and mass storage device 607 described above may be collectively referred to as memory.

According to an embodiment of the present application, the computer apparatus 600 may also operate as a remote computer connected to a network via a network, such as the Internet. That is, the computer device 600 may be connected to the network 612 through the network interface unit 611 connected to the system bus 605, or may be connected to other types of networks or remote computer systems (not shown) using the network interface unit 611.

The memory also includes a computer program stored in the memory and configured to be executed by the one or more processors to implement the method of configuring the electrical device described above.

In an embodiment of the present application, there is also provided a non-transitory computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the configuration method of the electrical device described above.

In an exemplary embodiment, a computer program product is also provided, which, when executed by a processor, is adapted to implement the above-mentioned method of configuring an electrical device.

It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A configuration method of an electrical device is applied to a computer device, and the method comprises the following steps:

2. The method according to claim 1, wherein the calculating the number of grid-connected points and the capacity of each grid-connected point according to the project capacity and the grid-connected level comprises:

calculating the number of the grid-connected points according to the project capacity and the grid-connected level;

and determining the capacity of each grid-connected point according to the number of the grid-connected points.

3. The method according to claim 1, wherein after calculating the number of grid-connected points and the capacity of each grid-connected point according to the project capacity and the grid-connected level, the method further comprises:

acquiring n roofs contained in the target area, and the roof area and the roof shape of each roof, wherein n is a positive integer greater than or equal to 1;

determining the grid-connected points corresponding to the n roofs according to the roof areas of the roofs, and numbering the n grid-connected points according to the numbers of the n roofs;

and determining the respective setting positions of the n grid-connected points according to the roof shape.

4. The method according to claim 3, wherein the determining the respective setting positions of the n grid-connected points according to the roof shape comprises:

for an mth roof in the n roofs, acquiring a centroid of the mth roof and an azimuth angle of the mth roof, wherein m is a positive integer;

determining a midpoint connecting line closest to the azimuth angle of the mth roof, wherein the midpoint connecting line is a connecting line between the centroid of the mth roof and the centers of all the edges of the mth roof;

extending the connecting line outwards for k meters along a vector direction, wherein the vector direction is a direction in which a centroid of the mth roof points to a midpoint of each edge of the mth roof, and k is a positive integer;

and determining the end point of the connecting line as the setting position of the grid-connected point corresponding to the mth roof.

5. The method according to claim 1, wherein determining the configuration scheme of the inverter and the box transformer under each grid-connected point according to the capacity of each grid-connected point comprises:

for an s-th grid-connected point in the grid-connected points, determining the number of inverters under the s-th grid-connected point according to the position and the capacity of the s-th grid-connected point, wherein s is a positive integer;

determining the maximum box variable under the s-th grid-connected point according to the number of the inverters under the s-th grid-connected point;

determining the number and the type of the box transformer substation under the s-th grid-connected point according to the maximum box variable number and the type of the box transformer substation;

and determining the position of the box transformer substation under the s-th grid-connected point according to the position of the inverter under the s-th grid-connected point.

6. The method of claim 5, wherein determining the location of the box transformer at the s-th grid-connection point from the location of the inverter at the s-th grid-connection point comprises:

calculating the mass center of the inverter under the s-th grid-connected point according to the position of the inverter under the s-th grid-connected point;

taking the mass center of the inverter under the s-th grid-connected point as a starting point, taking rays to the position of the s-th grid-connected point, and determining the intersection point between the rays and the roof;

determining an intersection point which is farthest from the s-th grid-connected point among intersection points between the rays and the roof as a target intersection point;

and extending the target intersection point outwards by p meters along the direction of the ray, and determining the target intersection point subjected to extension processing as the position of the box transformer under the s-th grid-connected point, wherein p is a positive integer.

7. The method according to claim 1, wherein the determining the configuration scheme of the combiner box under each grid-connected point according to the grid-connected level comprises:

for the t-th grid-connected point in the grid-connected points, determining an output end access point of a combiner box under the t-th grid-connected point according to the grid-connected level, wherein t is a positive integer;

calculating the distance L between each inverter and the output end access point of the combiner box according to the position of the inverter at the t-th grid-connected point_iSaid L is_iIs a positive number, and i is a positive integer;

determining the model of the combiner box under the t-th grid-connected point according to the minimum value of the distance;

determining whether input end access points of the combiner box under the t-th grid-connected point meet all the requirements of accessing the inverters;

if the input end access points of the combiner box under the t-th grid-connected point meet the requirement that all inverters are accessed, determining the position of the combiner box under the t-th grid-connected point as the position of the inverter corresponding to the minimum value of the distance;

and if the input end access point of the combiner box under the t-th grid-connected point does not meet the requirement of completely accessing the inverter, changing the model of the combiner box under the t-th grid-connected point, and starting to execute the step of determining whether the input end access point of the combiner box under the t-th grid-connected point meets the requirement of completely accessing the inverter again.

8. An arrangement for configuring an electrical device, the arrangement comprising:

9. A computer device, characterized in that the computer device comprises a processor and a memory, in which a computer program is stored, which computer program is loaded and executed by the processor to implement the method according to any of claims 1 to 7.

10. A non-transitory computer-readable storage medium, having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the method of any of claims 1 to 7.