A distribution network planning route optimization method and system based on aerial photography data

Abstract

The present invention discloses a method and system for optimizing distribution network route planning based on aerial photography data. The method comprises: obtaining geographic information on the aerial photography data according to the aerial photography data of a geographic area, and selecting, in sequence, geographic locations suitable for constructing transmission poles between a distribution starting point and a distribution end point based on the geographic information; arranging transmission poles between the distribution starting point and the distribution end point, connecting two adjacent transmission poles in sequence, and performing grouping processing on the transmission poles between the distribution starting point and the distribution end point; after completing the grouping processing of all transmission poles between the distribution starting point and the distribution end point, merging the transmission poles of two adjacent groups to reduce the distribution cost. The present invention can realize automatic design and optimization of power grid distribution lines without incurring a large amount of labor costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of distribution network route planning, and in particular relates to a distribution network route optimization method and system based on aerial photography data. Background Art

[0002] The distribution network route refers to the transmission line that transmits electricity from the substation to the transformer, or from the substation to the electricity user. The preliminary planning of the distribution network route plays a very important role in the normal operation of the power in the later stage. In the existing technology, when planning the distribution network route, manual measurement and manual calculation are generally used to determine the position of the transmission pole, the capacity of the transformer, and the combination of the types of transmission lines. However, when using the above-mentioned method of planning the distribution network route, due to the need for a large amount of manual participation, the planning of the distribution network route is time-consuming, inefficient, high in labor costs, and low in automation. Therefore, it is of great practical significance to study a distribution network route optimization method and system based on aerial photography data to solve the above-mentioned technical problems. Summary of the Invention

[0003] The present invention determines a geographical location suitable for setting up a transmission pole between the distribution starting point and the distribution end point based on aerial photography data, and sequentially sets up multiple transmission poles. At the same time, the multiple transmission poles are grouped, and the type of transmission line is selected in each group of transmission poles, the position and capacity of the transformer are set, and the distribution line in each group of transmission poles is optimized to reduce distribution costs. The present invention aims to provide an automatic design and optimization method for power grid distribution lines while reducing labor costs.

[0004] In order to achieve the above-mentioned object of the invention, a distribution network planning route optimization method based on aerial photography data is provided as follows, which mainly includes the following steps:

[0005] Based on aerial data of a geographic area, geographic information in the aerial data is obtained, the geographic information including road data, building data, river data, and terrain data, and locations suitable for erecting transmission poles are sequentially selected between a power distribution starting point and a power distribution end point based on the geographic information in the aerial data, wherein the number of the power distribution starting point is one and the number of the power distribution end points can be multiple;

[0006] A transmission pole is set at each location between the distribution starting point and the distribution end point where a transmission pole is suitable for being installed, and two adjacent transmission poles are connected in sequence. A transformer is set at the transmission pole located at the distribution starting point, and the capacity of the transformer is set to a predetermined minimum capacity. At the same time, a plurality of transmission poles between the distribution starting point and the distribution end point are grouped. During the grouping process, the position of the transformer is moved based on the position of different transmission poles in each group, the capacity of the transformer is changed, and the type of the transmission line is determined.

[0007] After completing the grouping process for all transmission poles between the distribution starting point and the distribution end point, the transmission poles of two adjacent groups are merged to reduce the distribution cost. When all the transmission poles of two adjacent groups have undergone the merging process, the distribution line planning from the distribution starting point to the distribution end point is realized.

[0008] As a preferred technical solution of the present invention, grouping processing is performed on a plurality of transmission poles between a power distribution starting point and a power distribution end point, including the following steps:

[0009] The transmission pole at the starting point of the power distribution is used as the starting transmission pole, and the transmission pole at the end point of the power distribution is used as the end transmission pole. The starting transmission pole is added to the first group of transmission poles, and the current shortest distance between the starting transmission pole and the end transmission pole is obtained. The transmission poles passed by this route are added to the first group of transmission poles in sequence.

[0010] Based on the first group of transmission poles, calculating the distance between a starting transmission pole and an ending transmission pole, and comparing the distance with a preset distance threshold; if the distance is greater than or equal to the distance threshold, using a transmission line for long-distance power distribution; otherwise, using a transmission line for short-distance power distribution;

[0011] Based on the first group of transmission poles, determining whether the voltage drop between a starting transmission pole and an ending transmission pole exceeds a preset voltage drop threshold; if the voltage drop exceeds the voltage drop threshold, moving the transformer from the starting transmission pole to the ending transmission pole in sequence; and for each transmission pole moved, continuing to determine whether the voltage drop between the starting transmission pole and the transformer, and the voltage drop between the transformer and the ending transmission pole, both do not exceed the voltage drop threshold; and when the conditions are met for the first time, moving the transformer to the corresponding transmission pole, with the corresponding transmission pole serving as the new starting transmission pole;

[0012] Based on the first group of transmission poles, obtaining the power load on the transmission pole where the transformer is located, and when the power load is greater than the capacity of the transformer, increasing the capacity of the transformer to meet the power load;

[0013] Based on the first group of transmission poles, a current route with the shortest distance from the new starting transmission pole to an ending transmission pole other than the first group of transmission poles is obtained, and the transmission poles passed by this route are sequentially added to the first group of transmission poles. When the voltage drop on this route exceeds the voltage drop threshold, a transformer with the minimum capacity is installed at the new starting transmission pole. The same method is continued to be used to select the type of transmission line, move the position of the transformer, determine the new starting transmission pole, change the capacity of the transformer, and repeat this step.

[0014] As a preferred technical solution of the present invention, the step of repeatedly performing this step further includes the following steps:

[0015] Based on the first group of transmission poles, when there are no destination transmission poles that have not been grouped, the capacity of the transformer exceeds a preset capacity threshold, the voltage drop between the starting transmission pole and the transformer cannot be met by moving the transformer, and the voltage drop between the transformer and the destination transmission pole does not exceed the voltage drop threshold, the remaining transmission poles are added to the second group of transmission poles;

[0016] Based on the second group of transmission poles, several transmission poles connected to the first group of transmission poles are determined, and one transmission pole is randomly selected from the several transmission poles as the starting transmission pole in the second group of transmission poles. A transformer is set at the starting transmission pole in the second group of transmission poles, and the capacity of the transformer is the minimum capacity. At the same time, the same method as that used for processing the first group of transmission poles is used for the second group of transmission poles to select the type of transmission line in the second group of transmission poles, move the position of the transformer and simultaneously determine a new starting transmission pole, and change the capacity of the transformer. The third group of transmission poles is continuously generated until the Nth group of transmission poles. When the number of groups N reaches a preset group number threshold, the grouping processing of all transmission poles between the distribution starting point and the distribution end point is completed.

[0017] As a preferred technical solution of the present invention, the transmission poles in two adjacent groups are merged to reduce the power distribution cost, including the following steps:

[0018] Based on the first and second groups of transmission poles, a number of transmission poles in the second group of transmission poles connected to the first group of transmission poles are obtained. Each time a transmission pole is merged into the first group of transmission poles to become a new terminal transmission pole, if the capacity of the transformer does not exceed a capacity threshold and the voltage drop from the starting transmission pole to the new terminal transmission pole does not exceed a voltage drop threshold, proceed to the next step.

[0019] Calculate the sum of the distribution costs of the first group of transmission poles and the second group of transmission poles before and after the transmission poles are merged. The distribution cost refers to the sum of the costs of the transmission poles, transformers, and transmission lines. When the sum of the distribution costs of the two groups after the merger is less than the sum of the distribution costs of the two groups before the merger, merge one transmission pole into the first group of transmission poles each time to become the new terminal transmission pole.

[0020] For the second group of transmission poles and the third group of transmission poles, up to the N-1 group of transmission poles and the N group of transmission poles, the same method is used to merge the transmission poles of the two adjacent groups.

[0021] The present invention also provides a distribution network planning route optimization system based on aerial photography data, which specifically includes the following modules:

[0022] A transmission pole location determination module is configured to obtain geographic information from aerial data of a geographic area, and select, based on the geographic information from the aerial data, locations suitable for erecting transmission poles between a power distribution starting point and a power distribution end point;

[0023] The distribution line design module is used to set up transmission poles between the distribution starting point and the distribution end point, connect two adjacent transmission poles in sequence, and install transformers at the transmission poles located at the distribution starting point. At the same time, several transmission poles between the distribution starting point and the distribution end point are grouped. In the process of grouping, the position of transformers is moved, the capacity of transformers is changed, and the type of transmission line is determined;

[0024] The distribution line optimization module is used to merge the transmission poles of two adjacent groups after completing the grouping of all transmission poles between the distribution starting point and the distribution end point to reduce the distribution cost and realize the distribution line planning between the distribution starting point and the distribution end point.

[0025] Compared with the prior art, the beneficial effects of the present invention are at least as follows:

[0026] 1. The present invention first obtains geographic information from aerial photography data of a geographic area and, based on the geographic information, sequentially selects geographical locations suitable for installing transmission poles between the distribution starting point and the distribution end point. Secondly, transmission poles are arranged between the distribution starting point and the distribution end point, and pairs of adjacent transmission poles are sequentially connected. The transmission poles between the distribution starting point and the distribution end point are grouped. During the grouping process, the position of transformers is moved, the capacity of transformers is changed, and the type of transmission line is determined. Finally, after the grouping process for all transmission poles between the distribution starting point and the distribution end point is completed, the transmission poles in two adjacent groups are merged to reduce distribution costs.

[0027] 2. The present invention solves the problems in the prior art that, when planning distribution network routes, a large amount of manual participation is required, resulting in long planning time, low efficiency, high labor costs, and low degree of automation. The present invention can decompose the complex distribution route planning problem into several small distribution route planning problems for solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a flowchart of the steps of a method for optimizing distribution network route planning based on aerial photography data according to the present invention;

[0029] Figure 2 This is a structural diagram of a distribution network route planning optimization system based on aerial photography data according to the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script without departing from the scope of this application.

[0032] References Figure 1 As shown, the present invention provides a method for optimizing distribution network route planning based on aerial photography data, which is mainly implemented by executing the following steps:

[0033] Step 1: Based on aerial data of a geographic area, obtain geographic information from the aerial data, the geographic information including road data, building data, river data, and terrain data, and select locations suitable for constructing transmission poles between a power distribution starting point and a power distribution end point based on the geographic information from the aerial data, wherein the number of the power distribution starting point is one and the number of the power distribution end points can be multiple;

[0034] Step 2: Install a transmission pole at each location between the distribution starting point and the distribution end point where a transmission pole is suitable for installation. Adjacent transmission poles are sequentially connected, and a transformer is installed at the transmission pole at the distribution starting point. The capacity of the transformer is set to a predetermined minimum capacity. The transmission poles between the distribution starting point and the distribution end point are grouped. Furthermore, during the grouping process, the position of the transformer is moved based on the position of the different transmission poles in each group, the capacity of the transformer is changed, and the type of transmission line is determined.

[0035] Step 3: After completing the grouping process for all transmission poles between the distribution starting point and the distribution end point, merge the transmission poles of two adjacent groups to reduce the distribution cost. When all the transmission poles of the two adjacent groups have undergone the merge process, the distribution line planning from the distribution starting point to the distribution end point is completed.

[0036] Specifically, the inventors took into account that in the prior art, when planning the distribution network route, the geographical location suitable for building transmission poles is generally determined by manual measurement and manual calculation, and the capacity of the transformer to be installed is determined in combination with the power load, and different types of transmission lines are selected according to the distance of the distribution line. Among them, the cost of transformers with larger capacity is generally higher, and the cost of transmission lines for long-distance distribution is also higher than that of transmission lines for short-distance distribution. Planning the distribution network route by the above method has the problems of long time, low efficiency, high labor cost, and low degree of automation. In order to solve the above problems, first, geographical information can be conveniently obtained based on aerial photography data of the geographical area, and then the location of the transmission pole can be selected based on the geographical information to avoid relying on manual acquisition of geographical information. Secondly, After determining the position of each transmission pole, the adjacent transmission poles can be connected to preliminarily form a distribution line from the distribution starting point to the distribution end point. Because the distance of the distribution line may be long, it is difficult to complete the planning of the distribution line in one go. It is easy to encounter problems such as difficulty in determining the location and capacity of the transformer, and inappropriate type of selected transmission line. Therefore, the complex problem can be broken down into several small problems by dividing multiple transmission poles into different groups, and determining the location and capacity of the transformer in each group of transmission poles, and selecting the appropriate type of transmission line. Finally, in order to further consider reducing the distribution cost of the distribution line from the distribution starting point to the distribution end point, the transmission poles of two adjacent groups are merged to optimize the distribution line from the distribution starting point to the distribution end point.

[0037] Furthermore, a grouping process is performed on a plurality of transmission poles between the power distribution starting point and the power distribution end point, including the following steps:

[0038] The transmission pole at the starting point of the power distribution is used as the starting transmission pole, and the transmission pole at the end point of the power distribution is used as the end transmission pole. The starting transmission pole is added to the first group of transmission poles, and the current shortest distance between the starting transmission pole and the end transmission pole is obtained. The transmission poles passed by this route are added to the first group of transmission poles in sequence.

[0039] Based on the first group of transmission poles, the distance between the starting transmission pole and the ending transmission pole is calculated, and the distance is compared with a preset distance threshold. If the distance is greater than or equal to the threshold, the transmission line for long-distance power distribution is used; otherwise, the transmission line for short-distance power distribution is used.

[0040] Based on the first group of transmission poles, determining whether the voltage drop between a starting transmission pole and an ending transmission pole exceeds a preset voltage drop threshold; if the voltage drop exceeds the above voltage drop threshold, moving the transformer from the starting transmission pole to the ending transmission pole in sequence; and for each transmission pole moved, continuing to determine whether the voltage drop between the starting transmission pole and the transformer, and the voltage drop between the transformer and the ending transmission pole, both do not exceed the above voltage drop threshold. When the above conditions are met for the first time, moving the transformer to the corresponding transmission pole, and the corresponding transmission pole serves as the new starting transmission pole;

[0041] Based on the first group of transmission poles, obtain the power load on the transmission pole where the transformer is installed, and when the power load is greater than the capacity of the transformer, increase the capacity of the transformer to meet the above power load;

[0042] Based on the first group of transmission poles, a current route with the shortest distance from the new starting transmission pole to an ending transmission pole other than the first group of transmission poles is obtained, and the transmission poles passed by this route are sequentially added to the first group of transmission poles. When the voltage drop along this route exceeds the aforementioned voltage drop threshold, a transformer with the aforementioned minimum capacity is installed at the new starting transmission pole. The same method is continued to be used to select the type of transmission line, move the transformer position, determine the new starting transmission pole, and change the transformer capacity, and repeat this step.

[0043] Specifically, in the above steps, first, the transformer is set at the starting transmission pole and its capacity is set to the minimum. At the same time, the transmission poles on the route with the shortest distance from the starting transmission pole to the end transmission pole are added to the first group of transmission poles. Secondly, if the distance between the starting transmission pole and the end transmission pole is greater than the distance threshold, the transmission line for long-distance power distribution is selected. Otherwise, the transmission line for short-distance power distribution is used. At the same time, when the voltage drop between the starting transmission pole and the end transmission pole exceeds the voltage drop threshold, it is necessary to solve the problem of voltage drop exceeding the threshold by moving the position of the transformer, otherwise it will affect normal power consumption, and the transmission pole to which the transformer is moved is used as the new starting transmission pole, and the power load at the transmission pole to which the transformer is moved is continued. To change the capacity of the transformer, this can more accurately set the capacity of the transformer, thereby avoiding the transformer capacity not being able to meet the power load or causing waste of transformer capacity. Finally, all the transmission poles on the route with the shortest distance from the new starting transmission pole to the end transmission pole other than the first group of transmission poles are added to the first group of transmission poles. If the distance from the new starting transmission pole to the end transmission pole is greater than the distance threshold, it is also necessary to set another transformer at the new starting transmission pole, and its capacity is set to the minimum. In addition, the type of transmission line is selected, the position of the transformer is moved, the new starting transmission pole is determined, and the capacity of the transformer is changed according to the same method as above. Then, the steps of adding transmission poles to the first group of transmission poles are repeated.

[0044] Furthermore, when repeatedly performing the step of adding a transmission pole to the first group of transmission poles, the following steps are also included:

[0045] Based on the first group of transmission poles, if there are no destination transmission poles that have not been grouped, the capacity of the transformer exceeds a preset capacity threshold, the voltage drop between the starting transmission pole and the transformer cannot be met by moving the transformer, and the voltage drop from the transformer to the destination transmission pole does not exceed the aforementioned voltage drop threshold, the remaining transmission poles are added to the second group of transmission poles;

[0046] Based on the second group of transmission poles, a number of transmission poles connected to the first group of transmission poles are determined, and a transmission pole is randomly selected from the number of transmission poles as the starting transmission pole in the second group of transmission poles. A transformer is installed at the starting transmission pole in the second group of transmission poles, and the capacity of the transformer is the minimum capacity. At the same time, the same method as used in processing the first group of transmission poles is used for the second group of transmission poles to select the type of transmission line in the second group of transmission poles, move the position of the transformer and simultaneously determine a new starting transmission pole, and change the capacity of the transformer. The third group of transmission poles is continuously generated until the Nth group of transmission poles is reached. When the number of groups N reaches a predetermined group number threshold, the grouping process for all transmission poles between the power distribution starting point and the power distribution end point is completed.

[0047] Specifically, in the above steps, the inventors have considered that when there are no destination transmission poles that have not yet been grouped, or when the capacity of the transformer exceeds the capacity threshold, that is, the power load of the multiple transmission poles connected to the transformer exceeds its load capacity, or when the voltage drop between the starting transmission pole and the transformer and the voltage drop from the transformer to the destination transmission pole cannot be met by moving the transformer, and when the voltage drop does not exceed the voltage drop threshold at the same time, that is, the distance between the starting transmission pole and the destination transmission pole is too far, it is necessary to stop executing the step of adding transmission poles to the first group of transmission poles, add the remaining transmission poles to the second group of transmission poles, and in the same manner as when processing the first group of transmission poles, determine the starting transmission pole therein and set a transformer at the starting transmission pole. Then, the same method is used to select the type of transmission line, move the position of the transformer to determine a new starting transmission pole, change the capacity of the transformer, and repeat the step of adding transmission poles to the second group of transmission poles. And so on, continue to generate the third group of transmission poles, and finally the Nth group of transmission poles.

[0048] Furthermore, the transmission poles in two adjacent groups are merged to reduce the power distribution cost, including the following steps:

[0049] Based on the first and second groups of transmission poles, a number of transmission poles in the second group of transmission poles connected to the first group of transmission poles are obtained. Each time a transmission pole is merged into the first group of transmission poles to become a new terminal transmission pole, if the capacity of the transformer does not exceed a capacity threshold and the voltage drop from the starting transmission pole to the new terminal transmission pole does not exceed a voltage drop threshold, proceed to the next step.

[0050] Calculate the sum of the distribution costs of the first group of transmission poles and the second group of transmission poles before and after the transmission poles are merged. The above distribution costs refer to the sum of the costs of the transmission poles, transformers, and transmission lines. When the sum of the distribution costs of the two groups after the merger is less than the sum of the distribution costs of the two groups before the merger, merge one transmission pole into the first group of transmission poles each time to become the new terminal transmission pole.

[0051] For the second group of transmission poles and the third group of transmission poles, up to the N-1 group of transmission poles and the N group of transmission poles, the same method is used to merge the transmission poles of the two adjacent groups;

[0052] Specifically, after completing the grouping processing of multiple transmission poles between the distribution starting point and the distribution end point, in order to further reduce the distribution cost between the distribution starting point and the distribution end point, for each of the two adjacent groups of transmission poles, it is determined whether the transformers in the previous group can still meet the requirements if the transmission poles in the latter group connected to the former group are merged into the former group and used as the new terminal transmission poles in the former group without moving the position of the transformers in the former group, but changing the capacity of the transformers accordingly. If the requirements can be met, it is further determined whether the sum of the distribution costs of the former and latter groups after the merging of the transmission poles is reduced. If the sum of the distribution costs is reduced, the transmission poles can be merged. Otherwise, the transmission poles will not be merged. When all the transmission poles in the two adjacent groups have been merged, the distribution line planning between the distribution starting point and the distribution end point is realized.

[0053] References Figure 2 As shown, the present invention also provides a distribution network planning route optimization system based on aerial photography data, which is used to implement the distribution network planning route optimization method based on aerial photography data as described above. Specifically, the functions of each module are described as follows:

[0054] A transmission pole location determination module is configured to obtain geographic information from aerial photography data of a geographic area and select, based on the geographic information in the aerial photography data, locations suitable for erecting transmission poles between a power distribution starting point and a power distribution end point;

[0055] The distribution line design module is used to set up transmission poles between the distribution starting point and the distribution end point, connect two adjacent transmission poles in sequence, and install transformers at the transmission poles located at the distribution starting point. At the same time, several transmission poles between the distribution starting point and the distribution end point are grouped. In the process of grouping, the position of transformers is moved, the capacity of transformers is changed, and the type of transmission line is determined;

[0056] The distribution line optimization module is used to merge the transmission poles of two adjacent groups after completing the grouping of all transmission poles between the distribution starting point and the distribution end point to reduce the distribution cost and realize the distribution line planning between the distribution starting point and the distribution end point.

[0057] In summary, the present invention first obtains geographic information from aerial data of a geographic area based on aerial data, and selects geographic locations suitable for building transmission poles between the distribution starting point and the distribution end point based on the geographic information; secondly, transmission poles are set between the distribution starting point and the distribution end point, and two adjacent transmission poles are connected in sequence. At the same time, the transmission poles between the distribution starting point and the distribution end point are grouped, and the position of the transformer is moved, the capacity of the transformer is changed, and the type of transmission line is determined during the grouping process; finally, after completing the grouping process for all transmission poles between the distribution starting point and the distribution end point, the transmission poles of the two adjacent groups are merged to reduce the distribution cost. The present invention solves the problems in the prior art that a large amount of manual participation is required when planning the distribution network route, resulting in a long time, low efficiency, high labor cost, and low degree of automation in planning the distribution network route. The present invention can decompose the complex distribution line planning problem into several small distribution line planning problems for solution.

[0058] It should be understood that, although the various steps in the flow chart of each embodiment of the present invention are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless otherwise specified herein, the execution of these steps is not strictly limited in order, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0059] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program. The above-mentioned program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0060] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments merely represent several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for optimizing distribution network route planning based on aerial photography data, characterized in that: The steps include: Based on aerial data of a geographic area, geographic information on the aerial data is obtained, the geographic information including road data, building data, river data, and terrain data, and locations suitable for erecting transmission poles are sequentially selected between a power distribution starting point and a power distribution end point based on the geographic information on the aerial data, wherein the number of power distribution starting points is one and the number of power distribution end points can be multiple; A transmission pole is set up at each location between the distribution starting point and the distribution end point where a transmission pole is suitable for installation. Two adjacent transmission poles are sequentially connected. A transformer is set up at the transmission pole at the distribution starting point. The capacity of the transformer is set to a predetermined minimum capacity. At the same time, a number of transmission poles between the distribution starting point and the distribution end point are grouped. During the grouping process, the position of the transformer is moved based on the position of different transmission poles in each group, the capacity of the transformer is changed, and the type of transmission line is determined. After completing the grouping process for all transmission poles between the distribution starting point and the distribution end point, the transmission poles of two adjacent groups are merged to reduce the distribution cost. When all the transmission poles of two adjacent groups are merged, the distribution line planning from the distribution starting point to the distribution end point is completed. The grouping process for several transmission poles between the distribution starting point and the distribution end point includes the following steps: The transmission pole at the starting point of the power distribution is used as the starting transmission pole, and the transmission pole at the end point of the power distribution is used as the end transmission pole. The starting transmission pole is added to the first group of transmission poles, and the current shortest distance between the starting transmission pole and the end transmission pole is obtained. The transmission poles passed by this route are added to the first group of transmission poles in sequence. Based on the first group of transmission poles, the distance between the starting transmission pole and the ending transmission pole is calculated, and the distance is compared with a preset distance threshold. If the distance is greater than or equal to the distance threshold, the transmission line for long-distance power distribution is used; otherwise, the transmission line for short-distance power distribution is used. Based on the first group of transmission poles, determine whether the voltage drop between the starting transmission pole and the ending transmission pole exceeds a preset voltage drop threshold. If the voltage drop exceeds the voltage drop threshold, move the transformer from the starting transmission pole to the ending transmission pole in sequence. For each transmission pole moved, continue to determine whether the voltage drop between the starting transmission pole and the transformer, and the voltage drop between the transformer and the ending transmission pole, both do not exceed the voltage drop threshold. When these conditions are met for the first time, move the transformer to the corresponding transmission pole, and use the corresponding transmission pole as the new starting transmission pole. Based on the first group of transmission poles, obtaining the power load on the transmission pole where the transformer is located, and when the power load is greater than the capacity of the transformer, increasing the capacity of the transformer to meet the power load; Based on the first group of transmission poles, the current shortest route from the new starting transmission pole to the end transmission pole other than the first group of transmission poles is obtained. The transmission poles passed by this route are sequentially added to the first group of transmission poles. When the voltage drop on this route exceeds the voltage drop threshold, a transformer with the minimum capacity is installed at the new starting transmission pole. The same method is continued to be used to select the type of transmission line, move the position of the transformer, determine the new starting transmission pole, change the capacity of the transformer, and repeat this step.

2. The method for optimizing distribution network route planning based on aerial photography data according to claim 1, characterized in that: It also includes the following steps: Based on the first group of transmission poles, if there are no destination transmission poles that have not been grouped, the capacity of the transformer exceeds a preset capacity threshold, the voltage drop between the starting transmission pole and the transformer cannot be met by moving the transformer, and the voltage drop between the transformer and the destination transmission pole does not exceed the voltage drop threshold, the remaining transmission poles are added to the second group of transmission poles. Based on the second group of transmission poles, several transmission poles connected to the first group of transmission poles are determined, and one transmission pole is randomly selected from the several transmission poles as the starting transmission pole in the second group of transmission poles. A transformer is set at the starting transmission pole in the second group of transmission poles, and the capacity of the transformer is the minimum capacity. At the same time, the same method as that used for processing the first group of transmission poles is used for the second group of transmission poles to select the type of transmission line in the second group of transmission poles, move the position of the transformer and determine a new starting transmission pole, and change the capacity of the transformer. The third group of transmission poles is continuously generated until the Nth group of transmission poles. When the number of groups N reaches a preset group number threshold, the grouping processing of all transmission poles between the distribution starting point and the distribution end point is completed.

3. The method for optimizing distribution network route planning based on aerial photography data according to claim 1, characterized in that: Merging transmission poles in two adjacent groups to reduce distribution costs includes the following steps: Based on the first and second groups of transmission poles, a number of transmission poles in the second group of transmission poles connected to the first group of transmission poles are obtained. Each time a transmission pole is merged into the first group of transmission poles to become a new terminal transmission pole, if the capacity of the transformer does not exceed a capacity threshold and the voltage drop from the starting transmission pole to the new terminal transmission pole does not exceed a voltage drop threshold, proceed to the next step. Calculate the sum of the distribution costs of the first group of transmission poles and the second group of transmission poles before and after the transmission poles are merged. The distribution cost refers to the sum of the costs of the transmission poles, transformers, and transmission lines. When the sum of the distribution costs of the two groups after the merger is less than the sum of the distribution costs of the two groups before the merger, merge one transmission pole into the first group of transmission poles each time to become the new terminal transmission pole. For the second group of transmission poles and the third group of transmission poles, up to the N-1 group of transmission poles and the N group of transmission poles, the same method is used to merge the transmission poles of the two adjacent groups.

4. A distribution network planning route optimization system based on aerial photography data, used to implement the method according to any one of claims 1 to 3, characterized in that: Includes the following modules: A transmission pole location determination module is used to obtain geographic information from aerial photography data of a geographic area and select locations suitable for erecting transmission poles between a power distribution starting point and a power distribution end point based on the geographic information from the aerial photography data. The distribution line design module is used to set up transmission poles between the distribution starting point and the distribution end point, connect two adjacent transmission poles in sequence, and install transformers at the transmission poles located at the distribution starting point. At the same time, several transmission poles between the distribution starting point and the distribution end point are grouped. In the process of grouping, the position of transformers is moved, the capacity of transformers is changed, and the type of transmission line is determined; The distribution line optimization module is used to merge the transmission poles of two adjacent groups after completing the grouping of all transmission poles between the distribution starting point and the distribution end point to reduce the distribution cost and realize the distribution line planning between the distribution starting point and the distribution end point.

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