A method for image processing of a photovoltaic power station platform

Abstract

The present invention provides an image processing method for a photovoltaic power station platform, the method comprising: receiving a power station image processing request from a user, wherein the power station image processing request includes at least the user's regional processing authority, the model of the target power station, and a planned processing power station image; performing a first authentication on the image processing request based on the user's regional processing authority and the model of the target power station; if the first authentication passes, performing a second authentication on the image processing request based on the model of the target power station and the geographic location of the planned processing image; if the second authentication passes, processing the planned processing power station image. This method solves the technical problem that existing photovoltaic power station systems do not perform any verification on images during image processing, resulting in operation and maintenance processing of erroneous images uploaded by users, and poor accuracy and low efficiency in image processing by the power station platform.

Description

Technical Field

[0001] The present invention relates to photovoltaic power station operation and maintenance, and in particular to an image processing method for a photovoltaic power station platform. Background Art

[0002] One of the main functions of the photovoltaic power station platform system is to process power station images uploaded by users, such as image recognition, to identify the defect location and type of photovoltaic modules, and then generate photovoltaic power station inspection reports, providing a basis for future power station defect elimination.

[0003] It should be noted that the existing photovoltaic power station system does not perform any verification on the images during the image processing process, resulting in the operation and maintenance processing of erroneous images uploaded by users. The power station platform has poor accuracy and low efficiency in processing images.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The present invention provides an image processing method for a photovoltaic power station platform to solve the technical problem that the existing photovoltaic power station system does not perform any verification on the image during the image processing process, resulting in operation and maintenance processing of erroneous images uploaded by users, and the power station platform has poor accuracy and low efficiency in processing images.

[0006] The present invention provides an image processing method for a photovoltaic power station platform, the method comprising: receiving a power station image processing request from a user, wherein the power station image processing request includes at least the user's regional processing authority, a model of a target power station, and a planned processing power station image; performing a first authentication on the image processing request based on the user's regional processing authority and the model of the target power station; if the first authentication passes, performing a second authentication on the image processing request based on the model of the target power station and the geographical location of the planned processing image; if the second authentication passes, processing the planned processing power station image.

[0007] Furthermore, the planned power station images are processed, including: determining the purpose of the power station image processing request based on the number or type of the planned power station images, wherein the type includes visible light photos or infrared photos; and performing infrastructure inspection or operation and maintenance inspection on the planned power station images based on the purpose of the power station image processing request.

[0008] Furthermore, the image processing request is authenticated for the first time based on the user area processing authority and the model of the target power station, including: determining the area of the target power station based on the model of the target power station; obtaining the permitted processing area from the user area processing authority; and determining that the first authentication is passed if the area of the target power station is within the permitted processing area.

[0009] Furthermore, the area of the target power station is a polygon, wherein determining whether the area of the target power station is within the permitted processing area includes: extracting multiple points on multiple edges of the area polygon of the target power station; and determining whether the area of the target power station is within the permitted processing area based on the multiple points and the permitted processing area.

[0010] Further, the multiple points completely coincide with multiple corner points of the polygon, wherein determining that the area of the target power station is within the permitted processing area based on the multiple points and the permitted processing area includes: when the multiple points are all within the permitted processing area, determining that the area of the target power station is within the permitted processing area.

[0011] Further, the multiple points do not overlap with the multiple corner points of the polygon, wherein determining that the area of the target power station is within the permitted processing area based on the multiple points and the permitted processing area includes: when the multiple points are all within the permitted processing area, determining that the area of the target power station is within the permitted processing area.

[0012] Furthermore, the plurality of points are obtained by dividing each side of the polygon into equal parts.

[0013] Furthermore, the area of the target power station is a polygon, wherein determining that the area of the target power station is within the permitted processing area includes: when multiple corner points of the polygon are within the area of the target power station, judging whether each side of the polygon intersects with any side of the permitted processing area; when no intersection occurs, determining that the area of the target power station is within the permitted processing area.

[0014] Furthermore, before determining that the area of the target power station is within the permitted processing area, the method further includes: proportionally increasing the permitted processing area or proportionally decreasing the area of the target power station.

[0015] Furthermore, there are multiple planned processing pictures, wherein the picture processing request is authenticated for the second time based on the model of the target power station and the geographical location of the planned processing picture, including: determining the area of the target power station based on the model of the target power station; extracting the longitude and latitude of the center position of the first planned processing picture among multiple planned processing pictures; when the longitude and latitude belong to the area of the target power station, determining that the second authentication is passed; when the longitude and latitude belong to the area of the target power station, determining that the second authentication is failed, and deleting the first planned processing picture from multiple planned processing pictures.

[0016] The present invention provides an image processing method for a photovoltaic power station platform, the method comprising: receiving a power station image processing request from a user, wherein the power station image processing request includes at least the user's regional processing authority, the model of the target power station, and a planned processing power station image; performing a first authentication on the image processing request based on the user's regional processing authority and the model of the target power station; if the first authentication passes, performing a second authentication on the image processing request based on the model of the target power station and the geographic location of the planned processing image; if the second authentication passes, processing the planned processing power station image. This method solves the technical problem that existing photovoltaic power station systems do not perform any verification on images during image processing, resulting in operation and maintenance processing of erroneous images uploaded by users, and poor accuracy and low efficiency in image processing by the power station platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a flow chart of the image processing method of the photovoltaic power station platform;

[0019] Figures 2 to 4 This is a schematic diagram of the effect of the image processing method of the photovoltaic power station platform. DETAILED DESCRIPTION

[0020] In order to make the above and other features and advantages of the present invention more clear, the present invention is further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0021] In the following description, many specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that it is not necessary to employ these specific details to practice the present invention. In other cases, well-known steps or operations are not described in detail to avoid obscuring the present invention.

[0022] Example 1

[0023] The present invention provides a method for processing images of a photovoltaic power station platform. Figure 1 , the method comprising:

[0024] Step S11 : receiving a power plant image processing request from a user, wherein the power plant image processing request at least includes the user's processing area authority, a model of a target power plant, and a planned processing power plant image.

[0025] Specifically, in this solution, this solution can be implemented by servers or other hardware devices with data processing functions as the execution body of the method of this solution. The above-mentioned users can be the operation and maintenance personnel of the photovoltaic power station. After logging into the software system of the photovoltaic power station platform, the operation and maintenance personnel can send their own user area processing rights (license), as well as the model file of the target power station (such as the kml file of the target power station, etc.), and the power station pictures taken by drones, namely the above-mentioned planned processing pictures, to the photovoltaic power station platform. The above-mentioned user area processing rights represent the user's authority to process pictures of power stations in which areas.

[0026] Step S13: Perform a first authentication on the image processing request based on the user's regional processing authority and the target power station's model.

[0027] Step S15 : If the first authentication is successful, a second authentication is performed on the image processing request based on the model of the target power station and the geographical location of the planned image processing location.

[0028] Step S17: If the second authentication is passed, the planned power station image is processed.

[0029] Specifically, the geographic location of the planned operation and maintenance image can be the actual latitude and longitude of the object captured in the image. Through the above two different authentications, the user's permission to upload the planned processing image can be determined, which can effectively prevent the user from uploading the wrong image and generating the wrong processing result.

[0030] Unlike existing technologies that directly process user-uploaded images, this solution performs two authentications on the user's image processing request. Only after both authentications are successful does this solution process the uploaded image for planned processing. For example, this solution can be used to inspect the progress of photovoltaic power station infrastructure construction, thereby generating an infrastructure inspection report. Another example is to perform photovoltaic power station operation and maintenance, such as inspecting photovoltaic modules for defects, thereby generating a photovoltaic module defect inspection report. This solves the problem of existing technologies that do not perform any verification on images, resulting in operational and maintenance processing of erroneous user-uploaded images, poor accuracy, and low efficiency in power station image processing.

[0031] Specifically, step S17 processes the planned power station image, including:

[0032] Step S171, determining the purpose of the power plant picture processing request based on the number and / or type of the power plant pictures to be processed, wherein the type includes visible light pictures or infrared pictures;

[0033] Step S172: performing infrastructure inspection or operation and maintenance inspection on the planned power plant image based on the purpose of the power plant image processing request.

[0034] Specifically, in this solution, when the type of the power station picture is an infrared photo, this solution determines that the purpose of the user uploading the visible light photo is for operation and maintenance inspection (such as hot spot inspection of photovoltaic components, diode open circuit inspection, etc.). This solution does not require the user to manually input a specific processing method and directly processes the above-mentioned visible light photo according to the operation and maintenance inspection, thereby generating an operation and maintenance report. When the type of the power station picture is a visible light photo, this solution determines that the purpose of the user uploading the visible light photo is for infrastructure inspection (such as infrastructure progress inspection). This solution does not require the user to manually input a specific processing method and directly processes the above-mentioned visible light photo for infrastructure inspection, and then generates an infrastructure inspection operation and maintenance report. In an optional embodiment, this solution can also directly determine the purpose of the user uploading based on the number of pictures. For example, when the user uploads one picture, this solution determines that the user is uploading for infrastructure inspection. When the user uploads multiple pictures, such as exceeding the preset number, this solution determines that the purpose of the user uploading the picture is operation and maintenance inspection.

[0035] In a preferred embodiment, this solution can also determine the purpose of the user's uploaded pictures based on the number of pictures uploaded by the user and the type of pictures. For example, if the user uploads one picture, this solution will continue to determine whether the picture is a visible picture. If so, this solution will determine that the purpose of the user uploading the picture is to do infrastructure testing.

[0036] It should be noted here that in the existing power station platform technology, after uploading pictures, users need to manually select the image processing method, such as infrastructure detection, hot spot detection, etc. The power station platform will call the specific algorithm for processing according to the selected method, which is inefficient and has a poor user experience. However, this embodiment is different from the existing technology. This solution does not require users to specify specific image processing purposes when uploading pictures. Users only need to upload pictures. This solution automatically identifies the type and / or quantity of the picture to determine the user's purpose, thereby automatically and efficiently generating image processing results. Therefore, this embodiment solves the problem of low efficiency in generating image detection reports in the existing technology, and also improves the user experience in generating image detection reports.

[0037] Optionally, step S13 performs a first authentication on the image processing request based on the user regional processing authority and the target power station model, including:

[0038] Step S131 : determining the area of the target power station based on the model of the target power station.

[0039] Step S132: Acquire the permitted processing area from the user area processing authority.

[0040] Specifically, in this solution, the model of the target power station can be constructed from multiple photos taken by a drone. The model of the target power station can include a kml file. This solution can determine the target power station area from the target power station model. It should be noted that determining the target power station area from the target power station model indicates that the user wants to upload images within the target power station area and perform image processing on the images within the target power station area. The target power station area can be a range of longitude and latitude. The permitted processing area means that the user can only upload images within a specific area for processing. Optionally, there can be multiple permitted processing areas.

[0041] Step S133 : If the area of the target power station is within the permitted processing area, it is determined that the first authentication is successful.

[0042] Specifically, when the target area uploaded by the user is within the permitted processing area, the first authentication of the user's image processing request is passed.

[0043] It should be noted here that when the target area is within the permitted area, it is determined that the first authentication of the user's image processing request is passed. This solution does not directly process the user's uploaded image, but continues with a second authentication, which greatly improves the efficiency of the user's image processing request legitimacy identification.

[0044] Optionally, the area of the target power station is a polygon, wherein step S133 determines that the area of the target power station is within the permitted processing area, including:

[0045] Step S1331 : extracting multiple points on multiple sides of the area polygon of the target power station.

[0046] Step S1332: Determine, based on the multiple points and the permitted processing area, whether the area of the target power station is within the permitted processing area.

[0047] Specifically, this solution can quickly and accurately determine whether the area of the target power station is within the permitted processing area based on the spatial relationship between multiple points on the area polygon of the target power station and the permitted processing area.

[0048] Optionally, the multiple points completely coincide with multiple corner points of the polygon, wherein step S133 determines that the area of the target power station is within the permitted processing area based on the multiple points and the permitted processing area, including:

[0049] Step S1333 : When the plurality of points are all within the permitted processing area, determining that the area of the target power station is within the permitted processing area.

[0050] Specific, combined Figure 2 , the four points A, B, C, and D are the four corner points of the target power station area. When the four corner points are all in the permitted processing area, this solution quickly determines that the area of the target power station is in the permitted processing area.

[0051] Optionally, the multiple points do not coincide with multiple corner points of the polygon, wherein determining, based on the multiple points and the permitted processing area, that the area of the target power station is within the permitted processing area includes:

[0052] In a case where the plurality of points are all within the permitted processing area, it is determined that the area of the target power plant is within the permitted processing area.

[0053] Specifically, in some cases, if the area of the target power station and the shape of the permitted processing area are as follows Figure 3 As shown, then the method of "determining that the target power station area is within the permitted processing area based solely on the four corner points (A, B, C, D) of the polygon of the target power station area all belonging to the target power station area" is inaccurate. Therefore, as a preferred embodiment of this solution, this solution takes points outside the corner points of the polygon of the target power station area (i.e. Figure 4E, F, G, H in the figure), and only when the above points are in the permitted processing area can the target power station be determined to be in the permitted processing area. As shown in the figure, point H is not in the permitted area, so Figure 4 In China, it cannot be determined whether the area of the target power station is within the permitted processing area. In this way, no matter what shape the permitted processing area and the area of the target power station are, this solution can accurately determine whether the area of the target power station is within the permitted processing area.

[0054] In an optional embodiment, the multiple points are obtained by dividing each side of the polygon into equal parts, that is, taking the midpoints of the multiple sides of the polygon in the area of the target power station (i.e. Figure 4 E, F, G, H in the figure), and when each midpoint of multiple sides of the area polygon of the target power station is within the permitted processing area, it is determined that the area of the target power station is within the permitted processing area. In this way, no matter what shape the permitted processing area and the area of the target power station are, this solution can accurately determine whether the area of the target power station is within the permitted processing area. Therefore, this embodiment solves the problem of how to accurately and effectively determine whether the area of the target power station is within the permitted processing area when the areas of the target power station and the permitted processing areas have different shapes.

[0055] Optionally, the area of the target power station is a polygon, and determining that the area of the target power station is within the permitted processing area includes:

[0056] When multiple corner points of the polygon are all within the area of the target power station, determining whether each side of the polygon intersects with any side of the permitted processing area;

[0057] If no intersection occurs, it is determined that the area of the target power station is within the permitted processing area.

[0058] Specific, combined Figure 3 As another preferred embodiment of this solution, when multiple corner points of the polygon are within the area of the target power station, this solution does not directly determine that the area of the target power station is within the permitted processing area, but continues to determine whether each side of the polygon intersects with any side of the permitted processing area. If no intersection occurs, this solution finally determines that the area of the target power station is within the permitted processing area. Figure 3 ,exist Figure 3 All corner points ABCD are within the permitted processing area. This solution then continues to determine whether there are intersections between the four sides of the polygon and the permitted processing area. Figure 3One side of the polygon intersects the permitted processing area, so this solution determines that the target power plant area is not within the permitted processing area. In this way, regardless of the shapes of the permitted processing area and the target power plant area, this solution can accurately determine whether the target power plant area is within the permitted processing area. Therefore, this embodiment solves the problem of how to accurately and effectively determine whether the target power plant area is within the permitted processing area when the target power plant area and the permitted processing area have different shapes.

[0059] Optionally, before determining that the area of the target power station is within the permitted processing area, the method further includes:

[0060] The user's photovoltaic power station platform usage record is obtained, and the permitted processing area is proportionally increased or the area of the target power station is proportionally reduced according to the user's power station platform usage record.

[0061] It should be noted here that, in order to ensure that the area of the target power station uploaded by the user is within the permitted processing area as much as possible, this solution can proportionally increase the permitted processing area or proportionally reduce the area of the target power station. It should also be noted here that this solution does not increase the permitted processing area or proportionally reduce the area of the target power station for all users, but rather determines through the user's power station platform usage record the number of times the target power station area uploaded by the user does not belong to the user's permitted processing area. If the number exceeds the preset number, it means that the user often uploads illegal pictures, and this solution will not increase the permitted processing area or proportionally reduce the area of the target power station. If the number does not exceed the preset number, it means that the user has a good credit. In order to more quickly meet the user's power station picture processing needs, this solution increases the permitted processing area or proportionally reduces the area of the target power station.

[0062] Optionally, there are multiple planned processing pictures, and the first planned processing picture belongs to any one of the multiple planned processing pictures. The second authentication of the picture processing request based on the model of the target power station and the geographical location of the planned processing picture includes:

[0063] determining a region of the target power station based on a model of the target power station;

[0064] Extracting the longitude and latitude of the center position of the first planned processing image;

[0065] If the longitude and latitude belong to the area of the target power station, determining that the second authentication is passed;

[0066] In a case where the longitude and latitude belong to the area of the target power station, it is determined that the second authentication fails, and the first planned processing picture is deleted from the plurality of planned processing pictures.

[0067] Specifically, in this solution, if the area of the target power station uploaded by the user is within the permitted processing area, this solution does not directly process the pictures uploaded by the user on the platform, but continues to determine whether the location of the object in the picture uploaded by the user is actually within the area of the target power station. If it is, this solution will confirm that the second authentication is passed and then process the picture on the platform. If it is not, this solution will delete the picture and process the remaining pictures. In the case where the user uploads a large number of pictures, irrelevant pictures can be quickly eliminated. In this way, it is ensured that the pictures uploaded by the user are in line with the user's processing area authority and actually meet the target power station area that the user wants to process, thereby greatly improving the accuracy of picture processing in the power station platform.

[0068] It should be understood that the specific features, operations and details described herein above with respect to the method of the present invention may also be similarly applied to the apparatus and system of the present invention, or vice versa. In addition, each step of the method of the present invention described above may be performed by the corresponding components or units of the apparatus or system of the present invention.

[0069] It should be understood that the various modules / units of the apparatus of the present invention may be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each of the modules / units may be embedded in a processor of a computer device in the form of hardware or firmware or independent of the processor, or may be stored in a memory of a computer device in the form of software for the processor to call to execute the operations of the modules / units. Each of the modules / units may be implemented as an independent component or module, or two or more modules / units may be implemented as a single component or module.

[0070] In one embodiment, a computer device is provided, comprising a memory and a processor, wherein the memory stores computer instructions executable by the processor, and when executed by the processor, the computer instructions instruct the processor to perform the steps of the method according to an embodiment of the present invention. The computer device can be broadly defined as a server, a terminal, or any other electronic device with the necessary computing and / or processing capabilities. In one embodiment, the computer device can include a processor, memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device can include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. can be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect to and communicate with external devices via a network. When the computer program is executed by the processor, the steps of the method according to the present invention are performed.

[0071] The present invention can be implemented as a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, causes the steps of the method of an embodiment of the present invention to be performed. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed, and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, can be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations can be performed by one or more computer devices or processors, and one or more other method steps / operations can be performed by one or more other computer devices or processors. One or more computer devices or processors can perform a single method step / operation, or perform two or more method steps / operations.

[0072] It will be understood by those skilled in the art that the method steps of the present invention can be performed by instructing relevant hardware such as a computer device or a processor through a computer program, and the computer program can be stored in a non-transitory computer-readable storage medium, which causes the steps of the present invention to be performed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database or other media herein may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0073] The various technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification as long as such combination does not conflict.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for processing images of a photovoltaic power station platform, characterized in that: The method comprises: receiving a power plant image processing request from a user, wherein the power plant image processing request includes at least the user's regional processing authority, a model of a target power plant, and a planned processing power plant image; Performing a first authentication on the image processing request based on the user regional processing authority and the model of the target power station; If the first authentication is passed, performing a second authentication on the image processing request based on the model of the target power station and the geographical location of the power station where the image is planned to be processed; If the second authentication is passed, processing the planned power station image; The first authentication of the image processing request based on the user regional processing authority and the target power station model includes: determining a region of the target power station based on a model of the target power station; Obtaining a permitted processing area from the user area processing authority; If the area of the target power station is within the permitted processing area, it is determined that the first authentication is passed.

2. The method according to claim 1, characterized in that Processing the planned power station image includes: determining a purpose of the power plant picture processing request based on the number or type of the power plant pictures planned to be processed, wherein the type includes visible light pictures or infrared pictures; Based on the purpose of the power plant image processing request, infrastructure inspection or operation and maintenance inspection is performed on the planned power plant image.

3. The method according to claim 1, characterized in that The target power station area is a polygon, and determining that the target power station area is within the permitted processing area includes: Extracting multiple points on multiple edges of the area polygon of the target power station; It is determined based on the plurality of points and the permitted processing area that the area of the target power plant is within the permitted processing area.

4. The method according to claim 3, characterized in that The plurality of points completely coincide with a plurality of corner points of the polygon, wherein determining, based on the plurality of points and the permitted processing area, that the area of the target power station is within the permitted processing area comprises: In a case where the plurality of points are all within the permitted processing area, it is determined that the area of the target power plant is within the permitted processing area.

5. The method according to claim 3, characterized in that The plurality of points do not coincide with a plurality of corner points of the polygon, wherein determining, based on the plurality of points and the permitted processing area, that the area of the target power station is within the permitted processing area comprises: In a case where the plurality of points are all within the permitted processing area, it is determined that the area of the target power plant is within the permitted processing area.

6. The method according to claim 5, characterized in that The multiple points are obtained by dividing each side of the polygon into equal parts.

7. The method according to claim 1, characterized in that The target power station area is a polygon, wherein determining that the target power station area is within the permitted processing area includes: When multiple corner points of the polygon are all within the area of the target power station, determining whether each side of the polygon intersects with any side of the permitted processing area; If no intersection occurs, it is determined that the area of the target power station is within the permitted processing area.

8. The method according to any one of claims 1 to 7, characterized in that Before determining that the area of the target power station is within the permitted processing area, the method further includes: The permitted processing area is increased in proportion or the area of the target power station is reduced in proportion.

9. The method according to claim 1, characterized in that There are multiple power plant images to be processed, wherein a second authentication is performed on the image processing request based on a model of the target power plant and a geographical location of the power plant images to be processed, including: determining a region of the target power station based on a model of the target power station; Extracting the longitude and latitude of the center position of a first planned processing power station image among the plurality of planned processing power station images; If the longitude and latitude belong to the area of the target power station, determining that the second authentication is passed; If the longitude and latitude do not belong to the area of the target power station, it is determined that the second authentication fails, and the first planned processing power station picture is deleted from the plurality of planned processing power station pictures.

Images