A method, system and device for generating a user access scheme for installation

Abstract

The application discloses a kind of report loading user access scheme generation method, system and equipment, comprising: when receiving the report loading information sent by user end, using report loading information and the power supply line information of the area to which user end belongs to determine the path length of the shortest path to be accessed;According to path length, the access path length threshold value of pre-set, power supply line information and the line load rate threshold value of pre-set, select accessible line;According to path length, sequentially select accessible line as accessible test line from short to long;Switch neck test is carried out to accessible test line, and the corresponding engineering cost is calculated;According to the comparison result of the calculation quantity of engineering cost and the scheme quantity threshold value of pre-set, the target access scheme of user end is generated according to the accessible test line to which the minimum engineering cost belongs.The whole report loading user access scheme generation process can be controlled by power grid terminal, improves the efficiency of report loading access scheme generation, and improves the reliability of access scheme.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, and in particular to a method, system and device for generating user access schemes. Background Technology

[0002] Application for medium-voltage load connection in the distribution network is an important service provided by the power supply department to users. The accuracy of the application and access plan is of great significance to ensuring the safe and stable operation of the distribution network. The current process of developing an application and access plan mainly involves power supply department staff conducting on-site surveys, collecting application data, reviewing relevant systems, and manually developing the access plan.

[0003] The current main working method involves a large workload and low efficiency. At the same time, due to the excessive reliance on the personal experience and subjective judgment of the staff, it is easy to cause problems with the connected lines due to insufficient identification of potential risk factors, such as line overload, bottlenecks in the power supply of some sections of the line, and suboptimal access paths. The reliability of the access solution needs to be improved. Summary of the Invention

[0004] This invention provides a method, system, and device for generating user access schemes, which solves the technical problem that existing technologies rely too much on the personal experience and subjective judgment of testing personnel, and at the same time fail to adequately identify potential risk factors, resulting in low reliability of access schemes.

[0005] The first aspect of this invention provides a method for generating a user access scheme, comprising:

[0006] When a user terminal sends an application for connection, the path length of the shortest path to be connected is determined using the application information and multiple power line information of the area to which the user terminal belongs.

[0007] Based on the path length, the preset access path length threshold, the power supply line information, and the preset line load rate threshold, select an accessible line from the lines to which the power supply line information belongs;

[0008] The accessible test lines are selected in ascending order of path length.

[0009] Perform a switch bottleneck test on the accessible test line and calculate the corresponding engineering cost of the accessible test line;

[0010] Based on the comparison between the calculated number of project costs and the preset threshold number of schemes, the target access scheme for the user terminal is generated according to the accessible test line with the lowest project cost.

[0011] Optionally, the step of determining the path length of the shortest path to be connected using the application information and multiple power line information of the area to which the user terminal belongs when receiving the application information from the user terminal includes:

[0012] When a user terminal sends an installation request, the system obtains information on multiple power supply lines in the area to which the user terminal belongs.

[0013] Extract the application coordinates from the application information, and extract the coordinates of the switch to be connected from the power supply line information;

[0014] Construct the shortest path to the proposed access point by connecting the application coordinates and the proposed access switch coordinates;

[0015] The path length of the shortest path to be connected is calculated using the installation coordinates and the coordinates of the switch to be connected.

[0016] Optionally, the step of selecting an accessible line from the lines to which the power supply line information belongs, based on the path length, a preset access path length threshold, the power supply line information, and a preset line load rate threshold, includes:

[0017] Compare the length of each path with a preset access path length threshold;

[0018] From the lines to which the power supply line information belongs, select the lines whose path length is less than the access path length threshold as the proposed access lines;

[0019] Calculate the proposed access load rate of the proposed access lines, and select the accessible lines based on the comparison results between the proposed access load rate of each line and the preset line load rate threshold.

[0020] Optionally, the step of calculating the proposed access load rate of the proposed access line and selecting an accessible line based on the comparison result of the proposed access load rate and a preset line load rate threshold includes:

[0021] Extract the application capacity and utilization coefficient from the application information, and obtain the line voltage level corresponding to the proposed connection line;

[0022] The estimated current for the application is obtained by comparing the first multiplication value of the applied capacity and the utilization coefficient with the second multiplication value of the line voltage level and the voltage conversion constant.

[0023] Extract the peak load current and safe current of the line corresponding to the proposed connection line from the power supply line information;

[0024] The first sum of the peak load current of each line and the estimated current for installation is used to calculate the ratio with the corresponding safe current of the line to obtain the proposed load rate of multiple lines.

[0025] Select lines whose proposed access load rate is less than or equal to a preset line load rate threshold as accessible lines.

[0026] Optionally, the step of performing a switch bottleneck test on the accessible test line and calculating the corresponding engineering cost of the accessible test line includes:

[0027] Extract the current limit value of the line to the right of all test switches and the highest historical current of the switches from the power supply line information;

[0028] The load rate of multiple switch sections is obtained by comparing the second sum of the historical highest current of each switch and the estimated current of the application with the current limit value of the line on the right side of the corresponding switch.

[0029] The cost of the new construction project is obtained by multiplying the path length of the shortest path to be connected to the test line with the unit project cost of the new line.

[0030] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the renovation project cost corresponding to the right-side line of the test switch is calculated, and the project cost corresponding to the test line is determined by combining the new construction project cost.

[0031] If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, then the cost of the newly constructed project is determined as the cost of the project corresponding to the test line that can be accessed.

[0032] Optionally, the step of calculating the renovation project cost corresponding to the right-side line of the test switch if the load rate of the switch section is greater than a preset switch section load rate threshold, and combining the new construction project cost to determine the project cost corresponding to the test line that can be connected, includes:

[0033] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the length of the right-side line of the switch corresponding to the test switch is extracted from the power supply line information.

[0034] The cost of the renovation project is obtained by multiplying the length of the circuit on the right side of the switch with the unit project cost of the renovated circuit.

[0035] The cost of the renovation project is summed with the cost of the corresponding new construction project to obtain the cost of the project that can be connected to the test line.

[0036] Optionally, the step of generating the target access scheme for the user terminal based on the comparison result between the calculated number of project costs and the preset threshold number of schemes includes:

[0037] Determine whether the calculated amount of the project cost is equal to a preset threshold for the number of schemes;

[0038] If not, then select new accessible lines as new accessible test lines in order of path length from shortest to longest, and proceed to the steps of performing switch bottleneck tests on the accessible test lines and calculating the engineering costs corresponding to the accessible test lines respectively.

[0039] If the calculated number of engineering costs is equal to the threshold number of schemes or if there is no new accessible line, then the target access scheme for the user terminal is generated according to the accessible test line with the lowest engineering cost.

[0040] Optionally, the method further includes:

[0041] If no accessible line exists, a new outgoing line split load is added as the target access scheme.

[0042] A second aspect of the present invention provides a user access scheme generation system, comprising:

[0043] The proposed access path length determination module is used to determine the path length of the shortest proposed access path when receiving the application information sent by the user terminal, using the application information and multiple power supply line information of the area to which the user terminal belongs;

[0044] The accessible line determination module is used to select an accessible line from the lines to which the power supply line information belongs, based on the path length, a preset access path length threshold, the power supply line information, and a preset line load rate threshold.

[0045] The module for determining accessible test lines is used to select accessible test lines in ascending order of path length.

[0046] The engineering cost calculation module is used to perform switch bottleneck tests on the accessible test lines and calculate the engineering cost corresponding to each accessible test line.

[0047] The target access scheme generation module is used to generate the target access scheme for the user terminal based on the comparison result between the calculated number of engineering costs and the preset scheme number threshold, according to the accessible test line with the lowest engineering cost.

[0048] A third aspect of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the user access scheme generation method as described in any one of the first aspects of the present invention.

[0049] As can be seen from the above technical solutions, the present invention has the following advantages:

[0050] This invention, upon receiving a user's application for connection, acquires information on multiple power lines in the user's area. Using the application and power line information, it determines the shortest path to the user and calculates the path length. Simultaneously, combining preset access path length thresholds and preset line load rate thresholds, it selects accessible lines from the power line information. Based on the path length, it selects a number of accessible lines in ascending order of length as test lines. It then performs switch bottleneck tests on these test lines, calculates the corresponding engineering cost based on the test results, counts the number of calculated engineering costs, and compares these costs with a preset threshold for the number of possible solutions. Finally, it generates the target access solution for the user based on the test line with the lowest engineering cost. The entire process of generating the user access solution can be controlled by the power grid terminal of the power supply station, improving both the efficiency and reliability of the access solution generation. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a flowchart illustrating the steps of a method for generating a user access scheme according to Embodiment 1 of the present invention.

[0053] Figure 2 This is a flowchart illustrating the steps of a method for generating a user access scheme according to Embodiment 2 of the present invention.

[0054] Figure 3 A flowchart illustrating an application example of steps 203 to 207 provided in Embodiment 2 of the present invention;

[0055] Figure 4 This is a structural block diagram of a user access scheme generation system provided in Embodiment 3 of the present invention. Detailed Implementation

[0056] This invention provides a method, system, and device for generating user access schemes, which addresses the technical problem that existing technologies rely too heavily on the personal experience and subjective judgment of testing personnel, and that insufficient identification of potential risk factors leads to low reliability of access schemes.

[0057] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0058] Please see Figure 1 , Figure 1 This is a flowchart illustrating the steps of a user access scheme generation method provided in Embodiment 1 of the present invention.

[0059] This invention provides a method for generating a user access scheme, comprising:

[0060] Step 101: When the user terminal sends the application information, the path length of the shortest path to be connected is determined by using the application information and the information of multiple power supply lines in the area where the user terminal is located.

[0061] Application information refers to information related to a user's application for medium-voltage load connection, including but not limited to the relevant power supply station, application coordinates, application capacity, load type, and utilization factor. It can be understood that application coordinates refer to the coordinates of the user's location; application capacity refers to the capacity requested by the user when applying for electricity from the power supply station; load type includes, but is not limited to, industrial, agricultural, commercial, and residential; and utilization factor refers to the share of the applied capacity used.

[0062] The user terminal's region refers to the power supply station to which the user terminal belongs. Power supply line information refers to attribute information about the medium-voltage line where the automatic switch is located, on a per-power supply station basis. This includes, but is not limited to, the power supply station, the automatic switch, the power supply line to which the switch belongs, the line to the right of the switch, the switch coordinates, the switch's historical highest current, the current limit value of the line to the right of the switch, the line length of the line to the right of the switch, the peak load current of the line, and the safe current of the line.

[0063] It is understandable that a power supply station includes multiple power supply lines, each of which is equipped with multiple automatic switches. The highest historical current of a switch refers to the maximum current that the automatic switch has ever carried. The line to the right of a switch refers to the switch section between this automatic switch and the next adjacent automatic switch. The current limit value and line length of the line to the right of a switch refer to the current limit value and line length of that switch section. The peak load current of the line refers to the maximum line current of the power supply line on the peak load day. The safe current of the line refers to the safe current of the line obtained by matching the line safe current meter.

[0064] The proposed shortest access path refers to the shortest route via the automated switch connecting the user to the power supply line of their respective power station. Path length refers to the distance between the user and the connected automated switch.

[0065] In this embodiment of the invention, the power supply station uses the automatic line switches as the backbone to form a network topology diagram of the corresponding lines. Based on the medium-voltage lines where the automatic switches are located, a hash table of attribute information for the automatic switches is generated, specifying the analysis method and the data, names, and numbers required by the system. When a user terminal sends an application for connection, the power supply station obtains information on multiple power supply lines belonging to the user terminal through the distribution automation system, the distribution GIS system, and the generated attribute information hash table. Based on the application information and the power supply line information, the power supply station determines the automatic switch that the user terminal intends to connect to, forms the shortest path for connection, and calculates the path length of this shortest path.

[0066] Step 102: Select an accessible line from the lines to which the power supply line information belongs, based on the path length, the preset access path length threshold, the power supply line information, and the preset line load rate threshold.

[0067] The access path length threshold refers to the power supply zone range of the application location. It can be set according to the power supply zone of the application location, for example: 1 km for Class A power supply zone, 2 km for Class B power supply zone, and 5 km for Class C and D power supply zones.

[0068] The line load rate threshold refers to the load rate threshold at which a power supply line reaches a heavy load. Preferably, the line load rate threshold is set to 80%.

[0069] Accessible lines refer to power supply lines that meet the access path length threshold and line load rate threshold.

[0070] In this embodiment of the invention, based on the calculated path length of the shortest path to be accessed, and combined with a preset access path length threshold, power supply line information, and a preset line load rate threshold, a power supply line that meets the access path length threshold and the line load rate threshold is selected from the lines to which the power supply line information belongs as an accessible line.

[0071] Step 103: Select accessible lines as accessible test lines in order of path length from shortest to longest.

[0072] Accessible test lines refer to lines that can be accessed for switch bottleneck testing.

[0073] In this embodiment of the invention, the path lengths between the shortest paths to be accessed corresponding to each accessible line are compared, and the accessible lines are sorted from shortest to longest path length. Based on the sorting results of the accessible lines, the accessible lines are selected in sequence as accessible test lines.

[0074] Step 104: Perform a switch bottleneck test on the testable lines and calculate the corresponding engineering cost of the testable lines.

[0075] The switch bottleneck test refers to the test to determine whether there is a bottleneck problem in the line connected to the user. The bottleneck problem refers to the problem that the wire diameter on the right side of the automatic switch is too small, resulting in insufficient current carrying capacity.

[0076] Project cost refers to the expected or actual cost of completing the construction of the user access line, including the cost of renovation projects and the cost of new construction projects.

[0077] Understandably, the wiring on the right side of the switch with bottleneck issues needs to be modified, corresponding to the modification project cost; the wiring between the automatic switches on the user's installed connection line needs to be newly built, corresponding to the new construction project cost.

[0078] In this embodiment of the invention, switch bottleneck tests are performed on the accessible test lines to identify the right-side lines of switches with bottleneck problems on the accessible test lines. Based on the lines that need to be modified or newly built for the accessible test lines, the corresponding engineering costs are calculated.

[0079] Step 105: Based on the comparison between the calculated number of engineering costs and the preset threshold number of schemes, generate the target access scheme for the user terminal according to the accessible test line with the lowest engineering cost.

[0080] The number of items for which the project cost has been calculated refers to the number of items for which the project cost has been calculated.

[0081] The threshold for the number of options refers to the number of options that are planned for comparison of engineering costs.

[0082] The target access scheme refers to the final user access scheme determined after line optimization, including but not limited to the access automation switch, the power supply line to which the switch belongs, the line to the right of the switch, and the project cost.

[0083] In this embodiment of the invention, after calculating the engineering cost of the accessible test line, the number of currently calculated engineering costs is counted. Combined with the comparison results with the preset number threshold of schemes, the accessible test line with the lowest engineering cost is selected as the target line for the user to access, with the goal of minimizing the engineering cost. The target access scheme is then generated by combining the power supply line information corresponding to the target line.

[0084] In this embodiment of the invention, when a user terminal sends an application for connection, multiple power supply line information for the user terminal's area is obtained. The application and power supply line information are used to determine the shortest path to access the network and calculate its length. Simultaneously, based on preset access path length thresholds and preset line load rate thresholds, accessible lines are selected from the lines associated with the power supply line information. A number of accessible lines are selected sequentially from shortest to longest path length as test lines. Switch bottleneck tests are performed on these test lines. The engineering cost corresponding to the test lines is calculated based on the test results. The number of calculated engineering costs is counted, and compared with a preset threshold for the number of solutions. The target access solution for the user terminal is generated based on the test line with the lowest engineering cost. The entire process of generating the user access solution can be controlled by the power grid terminal of the power supply station, improving both the efficiency and reliability of the access solution generation.

[0085] Please see Figure 2 , Figure 2 This is a flowchart illustrating the steps of a user access scheme generation method provided in Embodiment 2 of the present invention.

[0086] This invention provides a method for generating a user access scheme, comprising:

[0087] Step 201: When the user terminal sends the application information, the path length of the shortest path to be connected is determined by using the application information and the information of multiple power supply lines in the area where the user terminal is located.

[0088] Optionally, step 201 includes the following sub-steps:

[0089] When the user terminal sends the application information, the system obtains information on multiple power supply lines in the user terminal's area.

[0090] Extract the application coordinates from the application information, and extract the coordinates of the proposed switch from the power supply line information;

[0091] Construct the shortest path to the proposed connection by connecting the application coordinates and the coordinates of the switch to be connected.

[0092] The path length of the shortest path to be connected is calculated using the coordinates of the application and the coordinates of the switch to be connected.

[0093] The proposed switch refers to the automated switch in the power supply line that the user intends to connect to. The coordinates of the proposed switch refer to the coordinates of the location of the proposed switch.

[0094] The formula for calculating the path length of the proposed shortest path is as follows:

[0095] E = sin(Y0 / 57.2958) * sin(Y i / 57.2958)+cos(Y0 / 57.2958)*cos(Y i / 57.2958)+cos((X0-X i ) / 57.2958);

[0096] Δr = 6371 * Arccos(E);

[0097] The coordinates for the application are (X0, Y0), and the coordinates for the proposed switch are (X0, Y0). i Y i ), where Δr is the path length.

[0098] In this embodiment of the invention, when the application information sent by the user terminal is received, multiple power supply line information of the area to which the user terminal belongs is obtained. Based on the application information and the power supply line information, the automation switch that the user terminal intends to connect to is determined. The application coordinates and the coordinates of the switch to be connected are extracted. The application coordinates and the coordinates of the switch to be connected are connected to construct the shortest access path. The application coordinates and the coordinates of the switch to be connected are input into the path length calculation formula to calculate the path length.

[0099] Step 202: Select an accessible line from the lines to which the power supply line information belongs, based on the path length, the preset access path length threshold, the power supply line information, and the preset line load rate threshold.

[0100] Optionally, step 202 includes the following sub-steps:

[0101] Compare the length of each path with the preset access path length threshold;

[0102] From the power supply line information, select the line whose path length is less than the access path length threshold as the proposed access line;

[0103] Calculate the proposed access load rate of the proposed access lines, and select the accessible lines based on the comparison results between the proposed access load rate of each line and the preset line load rate threshold.

[0104] Preferably, step 202 further includes the following sub-steps:

[0105] Extract the application capacity and utilization coefficient from the application information, and obtain the line voltage level corresponding to the proposed connection line;

[0106] The estimated current for the application is obtained by comparing the first multiplier of the applied capacity and utilization factor with the second multiplier of the line voltage level and voltage conversion constant.

[0107] Extract the peak load current and safe current of the line corresponding to the proposed connection line from the power supply line information;

[0108] The first sum of the peak load current and the estimated current for each line is used to calculate the ratio with the corresponding safe current of the line to obtain the proposed load rate of multiple lines.

[0109] Select lines whose proposed access load rate is less than or equal to a preset line load rate threshold as accessible lines.

[0110] The proposed access line refers to the line centered on the application location and within the access path length threshold range.

[0111] The proposed line load rate refers to the line load rate after the user applies for a new line and is connected to the proposed line.

[0112] Line voltage level refers to the voltage level of the power supply line. For example, the line voltage level in a medium-voltage distribution network includes 10KV.

[0113] The voltage conversion constant refers to the constant that converts phase voltage into line voltage. It's understandable that AC transmission cables in substations typically use a three-phase system.

[0114] Estimated current for installation refers to the estimated load current generated by the user's installation request.

[0115] The formula for calculating the estimated current for the application is as follows:

[0116] I0 = S0 * P0 / 1.732 * U;

[0117] Where I0 is the estimated current for the application, S0 is the application capacity, P0 is the utilization factor, 1.732 is the voltage conversion constant, and U is the line voltage level of the power supply line to be connected.

[0118] Calculate the proposed load factor θ for the nth line. n The specific formula is as follows:

[0119] θ n =(I nmax +I0) / I nx ;

[0120] Among them, I nmax For the peak load current of the line, I nx This is the safe current for the line.

[0121] In this embodiment of the invention, the calculated path lengths are compared with a preset access path length threshold. Lines with path lengths less than the access path length threshold are selected from the lines to which the power supply line information belongs as proposed access lines. The application capacity and utilization coefficient are extracted from the application information, and a first multiplication value is obtained by multiplying the application capacity and utilization coefficient. The line voltage level corresponding to the proposed access line is obtained, and a second multiplication value is obtained by multiplying the line voltage level and voltage conversion constant. The ratio of the first and second multiplication values ​​is calculated to obtain the estimated application current. The peak load current and safe current corresponding to each proposed access line are extracted from the power supply line information. The peak load current and the estimated application current are summed to obtain a first sum value. The ratio of the first sum value to the corresponding safe current is calculated to obtain the proposed access load rate for each proposed access line. The proposed access load rate of each line is compared with a preset line load rate threshold, and proposed access lines with a proposed access load rate less than or equal to the preset line load rate threshold are selected as accessible lines.

[0122] Step 203: Select accessible lines as accessible test lines in order of path length from shortest to longest.

[0123] In this embodiment of the invention, the specific implementation process of step 203 is similar to that of step 103, and will not be repeated here.

[0124] Step 204: Perform a switch bottleneck test on the testable lines and calculate the corresponding engineering cost of the testable lines.

[0125] Optionally, step 204 includes the following sub-steps:

[0126] Extract the current limit value of the line to the right of all test switches that can be connected to the test line and the highest historical current of the switch from the power supply line information.

[0127] The load rate of multiple switch sections is obtained by comparing the second sum of the historical highest current and the estimated current of each switch with the current limit value of the line on the right side of the corresponding switch.

[0128] The cost of the new construction project is obtained by multiplying the path length of the shortest path corresponding to the test line that can be accessed with the unit project cost of the new line.

[0129] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the renovation cost of the line to the right of the test switch is calculated, and the project cost corresponding to the line that can be connected to the test is determined in combination with the cost of the new construction project.

[0130] If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, the cost of the new construction project will be determined as the cost of the project corresponding to the test line that can be connected.

[0131] Preferably, step 204 further includes the following sub-steps:

[0132] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, extract the line length of the right-side line of the switch corresponding to the test switch from the power supply line information.

[0133] The cost of the renovation project is obtained by multiplying the length of the line on the right side of the switch with the unit project cost of the renovated line.

[0134] The cost of the renovation project is summed with the cost of the corresponding new construction project to obtain the cost of the project that can be connected to the test line.

[0135] Test switches refer to all automated switches in a power supply line, from the switch to be connected to the corresponding first-end switch.

[0136] The switch section access load rate refers to the load rate of the circuit to the right of the switch belonging to the automated switch after the user has connected. Preferably, the switch section access load rate is set to 80%.

[0137] The unit project cost of a newly constructed railway line refers to the expected or actual cost required for constructing a new unit length of railway line.

[0138] The unit project cost for line renovation refers to the expected or actual cost required for the renovation of a unit length of line.

[0139] In this embodiment of the invention, the current limiting value of the right-side line of all test switches, including the proposed connection switch and the corresponding first-end switch, are extracted from the power supply line information. The historical maximum current of each switch is summed with the estimated current of the application to obtain a second sum. The second sum is then compared with the corresponding right-side line current limiting value of the switch to obtain the load rate of multiple switch segments. The path length of the shortest path corresponding to the proposed connection of the test line is obtained as the length of the new line. The length of the new line is multiplied by the unit project cost of the new line to obtain the cost of the new project. The load rate of each switch section is compared with the preset load rate threshold of the switch section. If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, the construction cost of the new project is determined as the construction cost corresponding to the test line that can be connected. If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the length of the right-side line of the test switch corresponding to the switch extracted from the power supply line information is taken as the length of the modified line. The modified line length is multiplied by the unit construction cost of the modified line to obtain the construction cost of the modified project. The construction cost of the test line is obtained by summing the construction cost of the modified project with the corresponding new project cost.

[0140] Step 205: Determine whether the calculated quantity of project cost is equal to the preset threshold for the number of schemes.

[0141] In this embodiment of the invention, after each project cost is calculated, the current number of project costs is counted, and it is determined whether the number of calculations is equal to the preset threshold for the number of schemes.

[0142] Step 206: If not, select new accessible lines in order of path length from shortest to longest as new accessible test lines, and proceed to step 204.

[0143] Newly accessible lines refer to accessible lines that have not undergone switch bottleneck testing.

[0144] In this embodiment of the invention, if the number of calculated engineering costs is not equal to the preset threshold for the number of schemes, then according to the path length of the accessible lines, the accessible lines that have not undergone switch bottleneck testing are selected as new accessible test lines from shortest to longest, and the process jumps to execute the steps of performing switch bottleneck testing on the accessible test lines and calculating the engineering costs corresponding to each accessible test line.

[0145] Step 207: If the calculated number of project costs is equal to the threshold number of schemes or there are no new accessible lines, then generate the target access scheme for the user terminal according to the accessible test line with the lowest project cost.

[0146] In this embodiment of the invention, if the calculated number of engineering costs equals the threshold for the number of schemes, it indicates that the plan to compare engineering costs and determine the number of target access schemes has been met. If no new accessible lines exist, it indicates that all accessible lines have been used as accessible test lines and their engineering costs have been calculated. The calculated engineering costs are compared with each other, and the accessible test line with the lowest engineering cost is selected as the target line for the user's access. The target access scheme is then generated by combining the power supply line information corresponding to the target line.

[0147] Optionally, the method further includes: if no accessible line exists, adding a new outgoing split load as the target access scheme.

[0148] In this embodiment of the invention, when the number of accessible lines is zero, it means that there are no power supply lines that meet the access path length threshold and line load rate threshold centered on the application location. Therefore, it is necessary to divide the load by the new outgoing line of the substation and plan the target access scheme.

[0149] Please see Figure 3 , Figure 3 The flowchart illustrates an application example of steps 203 to 207 provided in Embodiment 2 of the present invention.

[0150] The accessible lines and their corresponding automated switches are arranged into an array M. The switches are then removed from the array in ascending order of Δr to perform switch bottleneck tests on the lines to the right of the switches. The threshold number of schemes is set to 3.

[0151] For the i-th switch K of the t-th test line... i A switch bottleneck test is performed. Let t be initially 1, and i be the switch number. The initial value of i is the number of the switch to be connected to the t-th test line. When i is 1, the corresponding switch is the first switch of the t-th test line. Before any new load is connected, the highest historical current of the switch is I. Ki The current limiting value of the circuit on the right side of the switch is I. KMi The length of the circuit to the right of this switch is L. i Calculate the load rate θ of the switch section. i :

[0152] θ i =(I Ki +I0) / I KMi .

[0153] Determine θ i Does the load rate exceed the 80% threshold for the switch section? If it does, then there is a bottleneck in the circuit to the right of that switch section, requiring circuit modification. The corresponding modification length is L. i And the switch name K on the right side of the switch that needs to be modified. iand line length L i Store them in array N respectively t middle.

[0154] Perform switch bottleneck tests on all test switches sequentially until the bottleneck test of the first switch is completed, and calculate the construction cost P of the new construction and renovation project if the line is connected. t ,:

[0155] P t =Δr*C1+SUM(N) t [L i ])*C2;

[0156] Wherein, C1 is the unit project cost of the newly built line and C2 is the unit project cost of the renovated line.

[0157] P t Store the data in array P, and perform the switch bottleneck test for the (t+1)th line and calculate and store the project cost.

[0158] The number of calculated project costs in array P is checked. When the number of calculations equals 3, the bottleneck test is stopped, and the modification scheme with the lowest process cost is selected from array P as the target access scheme.

[0159] Min[P1,P2,P3].

[0160] In this embodiment of the invention, when a user terminal sends an application for installation, information on multiple power supply lines in the user terminal's area is obtained. The application and power supply line information are used to construct the shortest path for proposed access and calculate the path length. The proposed access line is selected based on a comparison of each path length with a preset access path length threshold. The estimated application current is calculated using the application capacity, utilization factor, line voltage level, and voltage conversion constant. Multiple proposed access load rates are calculated based on the estimated application current, peak line load current, and safe line current. Accessible lines are selected based on a comparison of the proposed access load rates with a preset line load rate threshold. Accessible lines are selected sequentially from shortest to longest path length as test lines. Switch bottleneck tests are performed on the test lines. The engineering cost corresponding to each test line is calculated based on the test results. The calculated engineering cost is then compared to a preset threshold for the number of solutions. If not, a new accessible test line is selected, and the process proceeds to perform a switch bottleneck test on the accessible test line and calculate the corresponding engineering cost for each accessible test line. If the calculated engineering cost equals the threshold for the number of solutions, or if no new accessible line can be used as a new accessible test line, then the target access solution for the user end is generated according to the accessible test line with the lowest engineering cost. The entire process of generating user access solutions can be controlled by the power supply station's grid terminal, improving both the efficiency and reliability of the access solutions.

[0161] Please see Figure 4 , Figure 4 This is a structural block diagram generated for a user access scheme provided in Embodiment 3 of the present invention.

[0162] This invention provides a user access scheme generation system, comprising:

[0163] The proposed access path length determination module 401 is used to determine the path length of the shortest proposed access path by using the application information and multiple power supply line information of the area to which the user belongs when it receives the application information sent by the user.

[0164] The accessible line determination module 402 is used to select accessible lines from the lines to which the power supply line information belongs based on the path length, a preset access path length threshold, power supply line information, and a preset line load rate threshold.

[0165] The accessible test line determination module 403 is used to select accessible test lines in order of path length from shortest to longest according to the path length.

[0166] The engineering cost calculation module 404 is used to perform switch bottleneck tests on the testable lines and calculate the corresponding engineering cost of the testable lines.

[0167] The target access scheme generation module 405 is used to generate a target access scheme for the user terminal based on the comparison result between the calculated number of engineering costs and the preset number of scheme thresholds, according to the accessible test line with the lowest engineering cost.

[0168] Optionally, the proposed access path length determination module 401 is specifically used for:

[0169] When the user terminal sends the application information, the system obtains information on multiple power supply lines in the user terminal's area.

[0170] Extract the application coordinates from the application information, and extract the coordinates of the proposed switch from the power supply line information;

[0171] Construct the shortest path to the proposed connection by connecting the application coordinates and the coordinates of the switch to be connected.

[0172] The path length of the shortest path to be connected is calculated using the coordinates of the application and the coordinates of the switch to be connected.

[0173] Optionally, the access line determination module 402 is specifically used for:

[0174] Compare the length of each path with the preset access path length threshold;

[0175] From the power supply line information, select the line whose path length is less than the access path length threshold as the proposed access line;

[0176] Calculate the proposed access load rate of the proposed access lines, and select the accessible lines based on the comparison results between the proposed access load rate of each line and the preset line load rate threshold.

[0177] Preferably, the accessible line determination module 402 is further used for:

[0178] Extract the application capacity and utilization coefficient from the application information, and obtain the line voltage level corresponding to the proposed connection line;

[0179] The estimated current for the application is obtained by comparing the first multiplier of the applied capacity and utilization factor with the second multiplier of the line voltage level and voltage conversion constant.

[0180] Extract the peak load current and safe current of the line corresponding to the proposed connection line from the power supply line information;

[0181] The first sum of the peak load current and the estimated current for each line is used to calculate the ratio with the corresponding safe current of the line to obtain the proposed load rate of multiple lines.

[0182] Select lines whose proposed access load rate is less than or equal to a preset line load rate threshold as accessible lines.

[0183] Optionally, the test line determination module 403 can also be used for:

[0184] If no available lines are available for access, the newly added outgoing line split load will be used as the target access solution.

[0185] Optionally, the project cost calculation module 404 is specifically used for:

[0186] Extract the current limit value of the line to the right of all test switches that can be connected to the test line and the highest historical current of the switch from the power supply line information.

[0187] The load rate of multiple switch sections is obtained by comparing the second sum of the historical highest current and the estimated current of each switch with the current limit value of the line on the right side of the corresponding switch.

[0188] The cost of the new construction project is obtained by multiplying the path length of the shortest path corresponding to the test line that can be accessed with the unit project cost of the new line.

[0189] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the renovation cost of the line to the right of the test switch is calculated, and the project cost corresponding to the line that can be connected to the test is determined in combination with the cost of the new construction project.

[0190] If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, the cost of the new construction project will be determined as the cost of the project corresponding to the test line that can be connected.

[0191] Preferably, the engineering cost calculation module 404 is further used for:

[0192] If the load rate of the switch section is greater than the preset load rate threshold of the switch section, extract the line length of the right-side line of the switch corresponding to the test switch from the power supply line information.

[0193] The cost of the renovation project is obtained by multiplying the length of the line on the right side of the switch with the unit project cost of the renovated line.

[0194] The cost of the renovation project is summed with the cost of the corresponding new construction project to obtain the cost of the project that can be connected to the test line.

[0195] Optionally, the target access scheme generation module 405 is specifically used for:

[0196] Determine whether the calculated project cost is equal to the preset threshold for the number of schemes;

[0197] If not, select new accessible lines in order of path length from shortest to longest as new accessible test lines, and proceed to the steps of performing switch bottleneck tests on the accessible test lines and calculating the engineering cost corresponding to each accessible test line.

[0198] If the calculated number of project costs equals the threshold for the number of schemes or there are no new accessible lines, then the target access scheme for the user terminal is generated according to the accessible test line with the lowest project cost.

[0199] This invention provides an electronic device, including a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the user access scheme generation method as described in any embodiment of this invention.

[0200] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the system and modules described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0201] In the several embodiments provided in this application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0202] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0203] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0204] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for generating a user access scheme, characterized in that, include: When a user terminal sends an application for connection, the path length of the shortest path to be connected is determined using the application information and multiple power line information of the area to which the user terminal belongs. Based on the path length, the preset access path length threshold, the power supply line information, and the preset line load rate threshold, select an accessible line from the lines to which the power supply line information belongs; The accessible test lines are selected in ascending order of path length. Perform a switch bottleneck test on the accessible test line and calculate the corresponding engineering cost of the accessible test line; Based on the comparison between the calculated number of project costs and the preset threshold number of schemes, the target access scheme for the user terminal is generated according to the accessible test line with the lowest project cost. The steps of performing a switch bottleneck test on the accessible test line and calculating the corresponding engineering cost of the accessible test line include: Extract the current limit value of the line to the right of all test switches and the highest historical current of the switches from the power supply line information; The load rate of multiple switch sections is obtained by comparing the second sum of the historical highest current of each switch and the estimated current of the application with the current limit value of the line on the right side of the corresponding switch. The cost of the new construction project is obtained by multiplying the path length of the shortest path to be connected to the test line with the unit project cost of the new line. If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the renovation project cost corresponding to the right-side line of the test switch is calculated, and the project cost corresponding to the test line is determined by combining the new construction project cost. If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, then the cost of the newly constructed project is determined as the cost of the project corresponding to the test line that can be accessed.

2. The method for generating a user access scheme according to claim 1, characterized in that, The step of determining the path length of the shortest path to be connected by using the application information and multiple power line information of the area where the user terminal is located when receiving the application information from the user terminal includes: When a user terminal sends an installation request, the system obtains information on multiple power supply lines in the area to which the user terminal belongs. Extract the application coordinates from the application information, and extract the coordinates of the switch to be connected from the power supply line information; Construct the shortest path to the proposed access point by connecting the application coordinates and the proposed access switch coordinates; The path length of the shortest path to be connected is calculated using the installation coordinates and the coordinates of the switch to be connected.

3. The method for generating a user access scheme according to claim 1, characterized in that, The step of selecting an accessible line from the lines to which the power supply line information belongs, based on the path length, a preset access path length threshold, the power supply line information, and a preset line load rate threshold, includes: Compare the length of each path with a preset access path length threshold; From the lines to which the power supply line information belongs, select the lines whose path length is less than the access path length threshold as the proposed access lines; Calculate the proposed access load rate of the proposed access lines, and select the accessible lines based on the comparison results between the proposed access load rate of each line and the preset line load rate threshold.

4. The method for generating a user access scheme according to claim 3, characterized in that, The step of calculating the proposed access load rate of the proposed access line and selecting an accessible line based on the comparison result of the proposed access load rate and a preset line load rate threshold includes: Extract the application capacity and utilization coefficient from the application information, and obtain the line voltage level corresponding to the proposed connection line; The estimated current for the application is obtained by comparing the first multiplication value of the applied capacity and the utilization coefficient with the second multiplication value of the line voltage level and the voltage conversion constant. Extract the peak load current and safe current of the line corresponding to the proposed connection line from the power supply line information; The first sum of the peak load current of each line and the estimated current for installation is used to calculate the ratio with the corresponding safe current of the line to obtain the proposed load rate of multiple lines. Select lines whose proposed access load rate is less than or equal to a preset line load rate threshold as accessible lines.

5. The method for generating a user access scheme according to claim 1, characterized in that, The step of calculating the renovation cost of the line to the right of the test switch if the load rate of the switch section is greater than the preset load rate threshold, and combining the renovation cost with the new construction cost to determine the project cost corresponding to the test line, includes: If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the length of the right-side line of the switch corresponding to the test switch is extracted from the power supply line information. The cost of the renovation project is obtained by multiplying the length of the circuit on the right side of the switch with the unit project cost of the renovated circuit. The cost of the renovation project is summed with the cost of the corresponding new construction project to obtain the cost of the project that can be connected to the test line.

6. The method for generating a user access scheme according to claim 1, characterized in that, The step of generating the target access scheme for the user terminal based on the comparison result between the calculated number of engineering costs and the preset threshold number of schemes includes: Determine whether the calculated amount of the project cost is equal to a preset threshold for the number of schemes; If not, then select new accessible lines as new accessible test lines in order of path length from shortest to longest, and proceed to the steps of performing switch bottleneck tests on the accessible test lines and calculating the engineering costs corresponding to the accessible test lines respectively. If the calculated number of engineering costs is equal to the threshold number of schemes or if there is no new accessible line, then the target access scheme for the user terminal is generated according to the accessible test line with the lowest engineering cost.

7. The method for generating a user access scheme according to claim 1, characterized in that, The method further includes: If no accessible line exists, a new outgoing line split load is added as the target access scheme.

8. A user access scheme generation system, characterized in that, include: The proposed access path length determination module is used to determine the path length of the shortest proposed access path when receiving the application information sent by the user terminal, using the application information and multiple power supply line information of the area to which the user terminal belongs; The accessible line determination module is used to select an accessible line from the lines to which the power supply line information belongs, based on the path length, a preset access path length threshold, the power supply line information, and a preset line load rate threshold. The module for determining accessible test lines is used to select accessible test lines in ascending order of path length. The engineering cost calculation module is used to perform switch bottleneck tests on the accessible test lines and calculate the engineering cost corresponding to each accessible test line. The target access scheme generation module is used to generate the target access scheme for the user terminal based on the comparison result between the calculated number of engineering costs and the preset scheme number threshold, according to the accessible test line with the lowest engineering cost. The engineering cost calculation module is specifically used for: Extract the current limit value of the line to the right of all test switches and the highest historical current of the switches from the power supply line information; The load rate of multiple switch sections is obtained by comparing the second sum of the historical highest current of each switch and the estimated current of the application with the current limit value of the line on the right side of the corresponding switch. The cost of the new construction project is obtained by multiplying the path length of the shortest path to be connected to the test line with the unit project cost of the new line. If the load rate of the switch section is greater than the preset load rate threshold of the switch section, the renovation project cost corresponding to the right-side line of the test switch is calculated, and the project cost corresponding to the test line is determined by combining the new construction project cost. If the load rate of the switch section is less than or equal to the load rate threshold of the switch section, then the cost of the newly constructed project is determined as the cost of the project corresponding to the test line that can be accessed.

9. An electronic device, characterized in that, The device includes a memory and a processor. The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of the user access scheme generation method as described in any one of claims 1-7.

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