Business expansion scheme decision-making method and system for new access base layer user

Abstract

The invention belongs to the technical field of power system data analysis, and relates to a business expansion scheme decision-making method and system for newly accessing basic level users, and the method comprises the steps: obtaining a feeder load openable capacity summary table; based on the feeder load openable capacity summary sheet, judging whether the capacity of the newly accessed user meets a preset requirement, if so, judging the distance of the ring main unit according to the installation address of the user, and newly building the ring main unit or using the existing ring main unit according to the judgment result to obtain a business expansion installation scheme; and updating the feeder load openable capacity summary sheet according to the business expansion scheme. A feeder load openable capacity summary table is constructed based on a data middle table, a basic level is assisted to quickly make a business expansion scheme decision, a business expansion approval process is simplified, and the problems that a traditional business expansion process is long, dependence on manpower is heavy, and construction efficiency is low can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power system data analysis, and relates to a decision-making method and system for the business expansion and installation plan of newly connected grass-roots users. Background Art

[0002] With the change of market demand, power supply enterprises need to adopt an internal scientific adjustment method to optimize the business expansion and installation process so as to adapt to the continuous change of the external environment. Through the optimization of the business expansion and installation process, this solution breaks the traditional functional organizational structure, improves the operation efficiency of the business expansion and installation process, and ultimately fundamentally improves the work efficiency and management level of power supply enterprises and realizes the optimal allocation of resources.

[0003] The traditional business expansion process is that when the power supply company receives the installation demand of a medium-voltage customer, the marketing specialty will hold a plan review meeting together with specialties such as development, dispatching, and operation and inspection. The distribution team needs to accurately monitor and evaluate the load situation of the line and communicate to determine the access plan. There are problems such as long process, heavy dependence on manual labor, low construction efficiency, and insufficient control over investment accuracy. The available open capacity calculated by this method is relatively subjective and inaccurate. Summary of the Invention

[0004] The purpose of the present invention is to provide a decision-making method and system for the business expansion and installation plan of newly connected grass-roots users, so as to solve the problems of long traditional business expansion process, heavy dependence on manual labor, and low construction efficiency. To achieve the above purpose, the present invention adopts the following technical solutions: In the first aspect, the present application discloses a decision-making method for the business expansion and installation plan of newly connected grass-roots users, including: Obtain a summary table of the available open capacity of the feeder load; Based on the summary table of the available open capacity of the feeder load, judge whether the capacity of the newly connected user meets the preset requirements. If it meets, judge the distance to the ring main unit according to the user installation address, and build a new ring main unit or use the existing ring main unit according to the judgment result to obtain the business expansion and installation plan; Update the summary table of the available open capacity of the feeder load according to the business expansion and installation plan.

[0005] Preferably, the obtaining of the summary table of the available open capacity of the feeder load specifically includes: S101: Based on the data middle platform, obtain the historical maximum load current, maximum allowable current, reverse power of the line, and reference voltage of the line in the PMS and power consumption acquisition systems; S102: After processing the abnormal data of the data obtained in S101, calculate the converted current value of the power supply output at the maximum load moment of the line, the available open current of the line, and the available open capacity of the line according to the above data; S103: Construct a summary table of the open capacity of feeder loads based on the open capacity of the line.

[0006] Preferably, based on the summary table of the open capacity of feeder loads, determine whether the capacity of the newly connected user meets the preset requirements. If it meets, judge the distance to the ring main unit according to the user's installation address, and create a new ring main unit or use the existing ring main unit according to the judgment result to obtain an installation plan for new business expansion, which specifically includes: S201: Determine whether the capacity of the newly connected user is less than 5000 kvA. If so, enter S202; otherwise, transfer to manual processing; S202: Search for the ring main unit from near to far. If a ring main unit can be found within 1 km, enter S203; otherwise, enter S204; S203: Determine whether the open capacity of the ring main unit meets the preset requirements. If it does not meet, return to S202 to search for a qualified ring main unit again; if it meets, output the corresponding installation plan for new business expansion according to the judgment result; S204: Determine whether there is a first ring main unit with a spare interval greater than 1 within 1 km, and determine whether there is a second ring main unit that meets the interval and capacity within 1 - 1.5 km, and give the corresponding installation plan for new business expansion according to the judgment result.

[0007] Preferably, in S203, outputting the corresponding installation plan for new business expansion according to the judgment result specifically includes: Judge whether the spare interval of the ring main unit is greater than 1; if it is greater than 1, give the plan of "directly connect to this ring main unit"; If it is not greater than 1, judge whether the spare interval of this ring main unit is 1. If so, give the plan of "create a loop - out from the new ring main unit and connect", and output the installation plan for new business expansion; otherwise, return to S202 to search for a qualified ring main unit again; Preferably, the corresponding installation plan for new business expansion given according to the judgment result in S204 specifically includes: If there are both a qualified first ring main unit and a second ring main unit, give the plan of "cut the load, the first ring main unit is loop - connected to the second ring main unit as a whole, and the user connects to the first ring main unit"; If neither the first ring main unit nor the second ring main unit meets the requirements, give the plan of "new outgoing feeder and create a new ring main unit"; If the first ring main unit meets the requirements and the second ring main unit does not meet the requirements, give the plan of "new outgoing feeder and connect to the first ring main unit"; If the first ring main unit does not meet the requirements and the second ring main unit meets the requirements, give the plan of "cut the load, create a new ring main unit and connect to the second ring main unit, and the user connects from the new ring main unit".

[0008] Preferably, for the abnormal data processing in S102, the random forest imputation method is adopted, and the calculation formula is as follows:

[0009] Wherein, is the continuous difference value of the summary table of the available capacity of the feeder load; is the new interpolation data matrix; is the original interpolation data matrix.

[0010] Preferably, in the S102, calculating the converted current value of the power supply output at the maximum load moment of the line, the available current of the line, and the available capacity of the line, specifically: Converted current value of the power supply output at the maximum load moment of the line: = /

[0011] Available current of the line:

[0012] Available capacity of the line:

[0013] Wherein, is the total reverse power; is the reference voltage of the line; is the converted current value of the power supply output at the maximum load moment of the line; is the available current of the line; is the maximum allowable current; is the historical maximum load current of the line; is the available capacity of the line.

[0014] In a second aspect, the present application discloses a decision-making system for the business expansion application plan of newly connected grass-roots users, including: An acquisition unit, configured to acquire a summary table of the available capacity of the feeder load; A judgment and output unit, configured to judge whether the capacity of the newly connected user meets the preset requirements based on the summary table of the available capacity of the feeder load. If it meets the requirements, perform a ring cabinet distance judgment according to the user's application address, and create a new ring cabinet or use an existing ring cabinet according to the judgment result to obtain a business expansion application plan; An update unit, configured to update the summary table of the available capacity of the feeder load according to the business expansion application plan.

[0015] In a third aspect, the present application discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the decision-making method for the business expansion application plan of newly connected grass-roots users described in any one of the above are implemented.

[0016] In a fourth aspect, the present application discloses a computer-readable storage medium storing a computer program, which when executed by a processor implements the steps of the decision-making method for the business expansion installation plan of newly connected grass-roots users described in any one of the above.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1) The decision-making method for the business expansion installation plan of newly connected grass-roots users provided by the present invention constructs a summary table of the openable capacity of feeder loads relying on the data middle platform, assisting grass-roots units to quickly make decisions on business expansion installation plans, simplifying the approval process of business expansion installation, and solving the problems of long traditional business expansion processes, heavy dependence on manual labor, and low construction efficiency. 2) The present invention can empower grass-roots units, reduce the time and energy consumption in the aspects of data collection, preliminary planning, and exploration journey, reduce the dependence on manual judgment, and compress the original offline plan-making process of 3-5 days to within 1 day. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a flowchart of the method of the present invention; Figure 2 is an implementation application scenario diagram of an embodiment of the present invention; Figure 3 is a calculation flowchart of an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the invention product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0025] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings: To realize the intelligentization of the business expansion and installation service, a medium-voltage business expansion plan auxiliary system based on the construction of a common data set inputs the business expansion demand information of customers, queries the distribution network access resources and available open capacity information near the customers. The goal is to assist the grass-roots level in quickly making decisions on business expansion and installation plans for users with a newly connected capacity of less than 5000 kvA, greatly shortening the working links and time involving manual participation, simplifying the business expansion and installation approval process, thereby realizing the intelligentization of the business expansion and installation service and enhancing the customer experience; at the same time, supporting the business department to improve the lean management of the available open capacity and strengthening the data control of the available open capacity. For users with a newly connected capacity exceeding 5000 kvA, generally a new feeder needs to be installed and a new ring main unit needs to be built, or a power supply plan needs to be formulated at the municipal company level, which is not within the scope of consideration of this solution. See Figure 1 , this application discloses a decision-making method for the business expansion and installation plan of newly connected grass-roots users, including: S1: Obtain the summary table of the available capacity of the feeder load; S2: Based on the summary table of the available capacity of the feeder load, determine whether the capacity of the newly connected user meets the preset requirements. If it meets, perform a ring main unit distance judgment according to the user's application installation address, and build a new ring main unit or use the existing ring main unit according to the judgment result to obtain the business expansion installation plan; S3: Update the summary table of the available capacity of the feeder load according to the business expansion installation plan.

[0027] The present invention proposes an innovative decision-making method for the business expansion installation plan for accessing grass-roots users. The core of this method is to construct a summary table of the available capacity of the feeder load by using the data middle platform technology. This innovative measure has greatly promoted the efficiency and accuracy in the decision-making process of the business expansion installation plan at the grass-roots level, effectively simplifying the cumbersome business expansion installation approval process. Compared with the traditional business expansion process, this method significantly shortens the processing time, reduces the excessive dependence on manual operations, and thus improves the overall construction efficiency. Specifically, through intelligent data support, the time and effort spent by grass-roots units in data collection, preliminary planning, and survey journey are greatly reduced. This change not only reduces the work burden of grass-roots personnel, but also greatly improves the speed and response ability of plan formulation, optimizing the offline plan formulation process that originally might take 3 to 5 days to be completed within 1 day, realizing the high efficiency and intelligence of the business process, and providing a more convenient and efficient service experience for grass-roots users.

[0028] In some embodiments, a decision-making method for the business expansion installation plan for newly connected grass-roots users includes: S1: Obtain the summary table of the available capacity of the feeder load; S101: Based on the data middle platform, obtain the historical maximum load current, maximum allowable current, line reverse power, and line reference voltage in the PMS and the power consumption acquisition system; S102: After performing abnormal data processing on the data obtained in S101, calculate the power supply output conversion current value at the maximum load moment of the line, the available current of the line, and the available capacity of the line according to the above data; S103: Construct a summary table of the available capacity of the feeder load based on the available capacity of the line; S2: Based on the summary table of the available capacity of the feeder load, determine whether the capacity of the newly connected user meets the preset requirements. If it meets, perform a ring main unit distance judgment according to the user's application installation address, and build a new ring main unit or use the existing ring main unit according to the judgment result to obtain the business expansion installation plan; S3: Update the summary table of the available capacity of the feeder load according to the business expansion installation plan.

[0029] In some embodiments, a decision-making method for the business expansion installation plan for newly connected grass-roots users includes: S1: Obtain the summary table of the available open capacity of the feeder load. S2: Based on the summary table of the available open capacity of the feeder load, determine whether the capacity of the newly connected user meets the preset requirements. If it meets, judge the distance to the ring main unit according to the user's application address, and create a new ring main unit or use the existing ring main unit according to the judgment result to obtain the service expansion application plan. S201: Determine whether the capacity of the newly connected user is less than 5000 kVA. If so, go to S202; otherwise, transfer to manual processing. S202: Search for the ring main unit from near to far. If a ring main unit can be found within 1 km, go to S203; otherwise, go to S204. S203: Determine whether the available open capacity of the ring main unit meets the preset requirements. If it does not meet, return to S202 to search for a ring main unit that meets the requirements again; if it meets, output the corresponding service expansion application plan according to the judgment result. S204: Determine whether there is a first ring main unit with a free interval greater than 1 within 1 km, and determine whether there is a second ring main unit that meets the interval and capacity within 1 - 1.5 km, and give the corresponding service expansion application plan according to the judgment result.

[0030] S3: Update the summary table of the available open capacity of the feeder load according to the service expansion application plan.

[0031] In some embodiments, in S203, according to the judgment result, outputting the corresponding service expansion application plan specifically includes: Judge whether the free interval of the ring main unit is greater than 1; if it is greater than 1, give the plan of "directly connect to this ring main unit". If it is not greater than 1, judge whether the free interval of this ring main unit is 1. If so, give the plan of "create a new outgoing line from the ring main unit and connect", and output the service expansion application plan; otherwise, return to S202 to search for a ring main unit that meets the requirements again. In some embodiments, the corresponding service expansion application plan given according to the judgment result in S204 specifically includes: if there are both a first ring main unit and a second ring main unit that meet the requirements, give the plan of "cut the load, the first ring main unit is integrally loop-connected to the second ring main unit, and the user connects to the first ring main unit". If neither the first ring main unit nor the second ring main unit meets the requirements, give the plan of "new outgoing line and create a new ring main unit". If the first ring main unit meets the requirements and the second ring main unit does not meet the requirements, give the plan of "new outgoing line and connect to the first ring main unit". If the first ring main unit does not meet the requirements and the second ring main unit meets the requirements, give the plan of "cut the load, create a new ring main unit and connect to the second ring main unit, and the user connects from the new ring main unit".

[0032] In some embodiments, for the abnormal data processing in S102, the random forest imputation method is adopted, and the calculation formula is as follows:

[0033] In the formula, is the continuous difference value of the summary table of the available capacity of the feeder load; is the new imputed data matrix; is the original imputed data matrix.

[0034] In some embodiments, in S102, calculating the converted current value of the power supply output at the maximum load moment of the line, the available current of the line, and the available capacity of the line specifically includes: Converted current value of the power supply output at the maximum load moment of the line: = /

[0035] Available current of the line:

[0036] Available capacity of the line:

[0037] Wherein, is the total reverse power; is the reference voltage of the line; is the converted current value of the power supply output at the maximum load moment of the line; is the available current of the line; is the maximum allowable current; is the historical maximum load current of the line; is the available capacity of the line.

[0038] In some embodiments, a decision-making method for the service expansion and installation plan for newly connected grass-roots users includes: 1) Dataset preparation: Based on the data middle platform, obtain data such as the historical maximum load current of the line and the converted current value of the power supply output at the maximum load moment of the line from the PMS and the power consumption acquisition system. First, perform abnormal data processing, and adopt the random forest imputation method. The calculation formula is as follows:

[0039] After abnormal data processing, calculate and determine the available current and available capacity of the line according to the formula, and construct a summary table of the available capacity of the feeder load, including data contents such as distributed power generation capacity, reverse power, and line reference voltage.

[0040] 2) Data analysis: It includes steps such as ring main unit distance analysis, ring main unit access analysis, feeder open capacity analysis, substation open capacity analysis, substation available interval analysis, and business expansion access method analysis. Finally, the most suitable business expansion application plan is obtained.

[0041] 3) Plan confirmation: Manually confirm the business expansion application plan again based on the plan in step B.

[0042] See Figure 3 , the calculation process of 1) specifically includes the following steps: A1: Calculate the correlation between "long-term operation limit of the line", "long-term operation limit of the current transformer", "long-term operation limit of the relay protection", and "line current" with all load factors between 65% - 70% through an improved Pearson correlation coefficient algorithm. The algorithm formula is as follows:

[0043] It is found that the correlation coefficient is relatively high. Therefore, the minimum value among the three is selected as the maximum allowable current.

[0044] A2: Obtain the "highest load current in the past year" under the normal operation mode of the line : Associate the large feeder ID to the main network D5000 load ID from the database table, and then find the highest load current in the past year through the load ID in the data platform.

[0045] A3: Obtain the total reverse power of the line : Obtain the acquisition object ID, and obtain the corresponding relationship between the line and the public transformer and photovoltaic dedicated transformer users through the substation-line-transformer relationship and the transformer-household relationship table, so as to obtain the acquisition object ID of the public transformer and photovoltaic dedicated transformer users under this line. Associate the acquisition object ID and the highest load current in the past year to obtain the total reverse power . Where Pi is the reverse power in the past year.

[0046] A4: Obtain the reference voltage of this line : Obtain it directly from the database table.

[0047] A5: Calculate the converted current value of the power output of the power supply at the maximum load moment of this line (dispatching caliber) : The calculation formula is = total reverse power / reference voltage of the line .

[0048] A6: Calculate the openable current of this line: .

[0049] A7: Calculate the openable capacity of this line : 。

[0050] A8: Construct a summary table of the available capacity of the feeder load based on the available capacity data of each line calculated in A7.

[0051] The said 2) specifically includes the following steps: (loop network cabinet account information table, substation account information table, station-line-cabinet relationship table) B1: Search for idle loop network cabinets that meet the available capacity from near to far according to the user's application installation address.

[0052] B2: Judge whether it is necessary to build a new loop network cabinet or directly use the existing loop network cabinet according to the result of B1.

[0053] B3: Give a suitable service expansion application plan (one or more).

[0054] The said 3) specifically includes the following steps: C1: The research institute reviews the service expansion application plan described in 2) to determine the final result.

[0055] C2: Hold a service expansion balance meeting of the city company to notify the service expansion plan.

[0056] C3: Update the content of the data set described in 1) according to the service expansion plan.

[0057]

Embodiment

[0058] This application also discloses a decision-making system for the business expansion application plan for newly accessing grass-roots users, including: An acquisition unit for acquiring a summary table of the openable capacity of feeder loads; A judgment and output unit for judging whether the capacity of newly accessed users meets the preset requirements based on the summary table of the openable capacity of feeder loads. If it meets the requirements, judge the distance of the ring main cabinet according to the user application address, and build a new ring main cabinet or use the existing ring main cabinet according to the judgment result to obtain a business expansion application plan; An update unit for updating the summary table of the openable capacity of feeder loads according to the business expansion application plan.

[0059] This application also discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the decision-making method for the business expansion application plan for newly accessing grass-roots users described in any one of the above.

[0060] This application also discloses a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, it implements the steps of the decision-making method for the business expansion application plan for newly accessing grass-roots users described in any one of the above.

[0061] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0062] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices produce means for implementing the functions specified in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks.

[0063] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks.

[0064] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A decision method for a new grassroots user's service expansion plan, characterized in that: include: Obtain a summary table of available feeder load capacity; Based on the summary table of available capacity of feeder load, determine whether the capacity of the newly connected user meets the preset requirements. If yes, determine the distance to the ring main unit according to the user's registered address. Based on the judgment result, build a new ring main unit or use the existing one to obtain the business expansion registration plan; Update the summary table of open capacity of feeder load according to the business expansion application plan.

2. According to claim 1, a method for deciding a service expansion plan for a new grassroots user, characterized in that: The obtaining of the feeder load open capacity summary table specifically includes: S101: Based on the data center, obtain the historical maximum load current, maximum allowable current, line reverse power and line reference voltage of the line in the PMS and the user system; S102: After performing abnormal data processing on the data obtained in S101, the power output conversion current value, the line openable current and the line openable capacity are calculated according to the above data at the time of maximum line load; S103: Construct a feeder load open capacity summary table based on the line open capacity.

3. According to claim 1, a method for deciding a service expansion plan for a new grassroots user, characterized in that: The feeder load-based open capacity summary table determines whether the capacity of the newly connected user meets the preset requirements. If yes, the distance to the ring main unit is determined according to the user's registered address. A new ring main unit is built or an existing ring main unit is used according to the judgment result to obtain a business expansion registration plan, which specifically includes: S201: Determine whether the capacity of the newly connected user is less than 5000kvA. If so, proceed to S202; otherwise, transfer to manual processing; S202: Search for a ring main unit from near to far. If a ring main unit can be found within 1 km, proceed to S203; otherwise, proceed to S204. S203: Determine whether the open capacity of the ring main unit meets the preset requirements. If not, return to S202 to search for a ring main unit that meets the requirements again; if so, output the corresponding business expansion application plan according to the judgment result; S204: Determine whether there is a first ring main unit with a vacant interval greater than 1 within 1km, and determine whether there is a second ring main unit with a satisfactory interval and capacity within 1-1.5km, and give a corresponding business expansion application plan based on the determination result.

4. According to claim 3, a method for deciding a service expansion plan for a new grassroots user, characterized in that: In S203, according to the judgment result, outputting the corresponding business expansion application plan specifically includes: Determine whether the free interval of the ring main unit is greater than 1; if it is greater than 1, provide a solution of "directly connecting to the ring main unit"; If it is not greater than 1, determine whether the free interval of the ring main unit is 1. If so, give a solution of "building a new ring main unit and connecting it", and output the business expansion application solution; otherwise, return to S202 to search for a ring main unit that meets the requirements again.

5. According to claim 3, a method for deciding a service expansion plan for a new grassroots user, characterized in that: The corresponding business expansion application plan provided according to the judgment result in S204 specifically includes: If there are both a first ring main unit and a second ring main unit that meet the requirements, a solution of "cutting the load, connecting the first ring main unit to the second ring main unit as a whole, and connecting the user to the first ring main unit" is provided; If both the first and second RMUs do not meet the requirements, a solution of "new feeder and new RMU" is provided; If the first ring main unit meets the requirements but the second ring main unit does not, a solution of "new feeder and connecting to the first ring main unit" is provided; If the first ring main unit does not meet the requirements, but the second ring main unit meets the requirements, a solution of "cutting the load, connecting the new ring main unit to the second ring main unit, and users connecting from the new ring main unit" is given.

6. According to claim 2, a method for deciding a service expansion plan for a new grassroots user, characterized in that: The abnormal data processing in S102 adopts the random forest interpolation method, and the calculation formula is as follows: In the formula, The continuous difference value of the open capacity summary table for feeder load; is the new imputed data matrix; is the original interpolation data matrix.

7. According to claim 2, a method for deciding a service expansion plan for a new grassroots user, characterized in that: In S102, the power output conversion current value, the line openable current and the line openable capacity are calculated at the time of maximum line load, specifically: The power output converted current value at the time of maximum line load: = / Line open current: Line open capacity: in, is the total reverse power; is the line reference voltage; The current value converted from the power output at the time of maximum line load; The line can be opened to current; is the maximum allowable current; is the historical maximum load current of the line; Open capacity for the line.

8. A decision system for service expansion and installation plans for newly connected grassroots users, characterized in that: include: An acquisition unit, used for acquiring a summary table of available open capacities of feeder loads; The judgment output unit is used to judge whether the capacity of the newly connected user meets the preset requirements based on the summary table of the open capacity of the feeder load. If it does, the distance to the ring main unit is judged according to the user's registered address. According to the judgment result, a new ring main unit is built or an existing ring main unit is used to obtain a business expansion registration plan; The updating unit is used to update the summary table of feeder load open capacity according to the business expansion application plan.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for deciding on a service expansion subscription plan for new access grassroots users as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method for deciding a service expansion subscription plan for a new access grassroots user as described in any one of claims 1 to 7.

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