A method for designing power distribution network

Abstract

The present application relates to the technical field of power distribution network, and in particular, a method for designing power distribution network, including the following steps: obtaining the current substation parameters of each sub-area in the current distribution network, the current transmission cable parameters connecting the current substation, and the target power consumption parameters of each sub-area in the current distribution network; obtaining the target substation parameters of each sub-area in the current distribution network according to the target power consumption parameters of each sub-area in the current distribution network; determining the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the substation to be newly added according to the comparative analysis of the current substation parameters, the target substation parameters, and the current transmission cable parameters; determining the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the transmission cable to be newly added according to the comparative analysis of the current transmission cable parameters, the parameters of the substation to be retained, the parameters of the transmission cable to be replaced, and the parameters of the transmission cable to be newly added. The present application can provide guiding parameters to support the design of distribution network.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution network, and in particular to a method for designing a power distribution network. Background Art

[0002] In the power system, the distribution network is an important part of the power grid and plays a key role in the distribution of electric energy. It includes a variety of distribution equipment and ancillary facilities such as transmission cables, transformer stations, switchgear and reactive compensation capacitors.

[0003] However, traditional distribution network design methods have many shortcomings. On the one hand, due to the lack of effective long-term planning, these methods are difficult to meet the electricity demand of each sub-region, especially in the urban-rural fringe and old urban areas. With the acceleration of urbanization, the transformation and design of the distribution network is imminent. On the other hand, under the existing technical conditions, the design method of the distribution network is relatively extensive and there is no more accurate guiding parameters to support it, which leads to large differences in key parameters in the design schemes of different planners, making the design of the distribution network lack of overall coordination, which in turn affects the operating efficiency and stability of the entire distribution network after the transformation. Summary of the invention

[0004] The purpose of this application is to provide a power distribution network design method, which aims to solve the problem that there is no more accurate guiding parameters to support the transformation design of the distribution network, resulting in large differences in key parameters in the design schemes of different planners.

[0005] In order to solve the above technical problems, the present application provides a power distribution network design method, comprising the following steps:

[0006] S1, obtaining the current substation parameters of each sub-area in the current distribution network, the current transmission cable parameters connecting the current substation, and the target power consumption parameters of each sub-area in the current distribution network;

[0007] S2, obtaining target substation parameters of each sub-area in the current distribution network according to target power consumption parameters of each sub-area in the current distribution network;

[0008] S3, determining the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the substation to be newly added based on comparative analysis of the current substation parameters, the target substation parameters, and the current transmission cable parameters;

[0009] S4, determining the parameters of the retained transmission cable, the parameters of the replaced transmission cable, and the parameters of the newly added transmission cable through comparative analysis based on the current transmission cable parameters, the parameters of the retained substation, the parameters of the replaced substation, and the parameters of the newly added substation.

[0010] The present application provides a method for designing a power distribution network, which can first compare and analyze to determine the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the new substation, and then compare and analyze to determine the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the new transmission cable, wherein the parameters of the substation to be retained, the parameters of the substation to be replaced, the parameters of the new substation, the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the new transmission cable are used as definite and accurate guiding parameters to support the subsequent power distribution network design. The design schemes of different planners have a high consistency in key parameters, so that the design of the distribution network has a global coordination concept, thereby ensuring the operating efficiency and stability of the entire distribution network after the transformation.

[0011] As an improvement of the above method, step S3 includes the following steps:

[0012] A10, according to the comparison and analysis of the current substation parameters and the target substation parameters, the first step of retaining the substation parameters, the first step of replacing the substation parameters and the first step of adding the substation parameters are obtained;

[0013] A20, according to the current transmission cable parameters, the first step of retaining the substation parameters, the first step of replacing the substation parameters and the first step of adding the substation parameters are adjusted to obtain the substation parameters to be retained, the substation parameters to be replaced and the substation parameters to be added.

[0014] In this technical solution, the portion of the substation currently in use that is retained can be increased, thereby reducing the cost of renovating the current distribution network.

[0015] As an improvement to the above method, in step A10:

[0016] If the partition area has current substation parameters and the power supply performance of the current substation parameters is greater than or equal to the power supply performance of the target substation parameters, the first step of retaining substation parameters is obtained according to the current substation parameters of the partition area;

[0017] If the partition area has current substation parameters and the power supply performance of the current substation parameters is less than the power supply performance of the target substation parameters, the first step of changing the substation parameters is obtained according to the target substation parameters of the partition area;

[0018] If the partition area does not have current substation parameters, the first step of adding substation parameters is obtained according to the target substation parameters of the partition area.

[0019] In this technical solution, it is ensured that the transformation cost of the current distribution network can be reduced.

[0020] As an improvement to the above method, step A20 includes the following steps:

[0021] A21, according to the current transmission cable parameters, the first step reserved substation parameters, the first step replacement substation parameters and the first step newly added substation parameters are adjusted to obtain the second step reserved substation parameters, the second step replacement substation parameters and determine the newly added substation parameters;

[0022] A22, according to the second step of retaining the substation parameters, the corresponding substation is checked and compared and analyzed to obtain the third step of retaining the substation parameters and the third step of replacing the substation parameters;

[0023] A23, the third step of retaining substation parameters is to determine the parameters of the substation to be retained, and the second step of replacing the substation is combined with the third step of replacing the substation to obtain the parameters of the substation to be replaced.

[0024] In this technical solution, the reliability of operation of the distribution network after transformation can be ensured.

[0025] As an improvement to the above method, in step A21:

[0026] Substation adjustment parameters are introduced, and according to the connection parameters in the current transmission cable parameters and the substation adjustment parameters, the first step retained substation parameters, the first step replaced substation parameters and the first step newly added substation parameters are adjusted to obtain the second step retained substation parameters, the second step replaced substation parameters and the determined newly added substation parameters.

[0027] In this technical solution, it is possible to limit the range of the substation parameters to be retained in the second step, the substation parameters to be replaced in the second step, and the range of the related connection parameters in the newly added substation parameters to be determined.

[0028] As an improvement of the above method, step S4 includes the following steps:

[0029] B10, according to the comparison and analysis of the parameters of the substation to be retained, the parameters of the substation to be replaced and the parameters of the new substation to be added, the parameters of the transmission cable to be retained in the first step, the parameters of the transmission cable to be replaced in the first step and the parameters of the transmission cable to be added are obtained;

[0030] B20, according to the first step of retaining the transmission cable parameters, the corresponding transmission cables are inspected and compared and analyzed to obtain the second step of retaining the transmission cable parameters and the second step of replacing the transmission cable parameters;

[0031] B30, the second step retains the transmission cable parameters to determine the transmission cable parameters, and the first step replaces the transmission cable parameters and the second step replaces the transmission cable parameters to determine the replacement transmission cable parameters.

[0032] In this technical solution, the reliability of operation of the distribution network after transformation can be ensured.

[0033] As an improvement to the above method, in step B10:

[0034] The target transmission cable type parameters are introduced, and based on the current transmission cable parameters, the target transmission cable type parameters, the retained substation parameters, the replaced substation parameters and the newly added substation parameters, comparative analysis is performed to obtain the first step of retaining the transmission cable parameters, the first step of replacing the transmission cable parameters and the determined newly added transmission cable parameters.

[0035] In this technical solution, the workload of obtaining the first step of retaining the transmission cable parameters and the first step of replacing the transmission cable parameters through algorithm analysis can be reduced.

[0036] As an improvement of the above method, the substations in determining the parameters of the retained substation, determining the parameters of the replaced substation and determining the parameters of the newly added substation are calibrated according to three types of long-term substations, medium-term substations and short-term substations and two types of actual parameters and target parameters.

[0037] This technical solution can provide reference data for further optimization and transformation of the subsequent distribution network.

[0038] As an improvement to the above method, the transmission cables in determining the parameters of the retained transmission cables, determining the parameters of the replaced transmission cables, and determining the parameters of the newly added transmission cables are calibrated according to the overhead cables and the underground cables.

[0039] This technical solution can provide reference data for further optimization and transformation of the subsequent distribution network.

[0040] As an improvement of the above method, after step S4, step S5 is also included: outputting and determining the parameters of the substation to be retained, the parameters of the substation to be replaced, the parameters of the new substation to be added, the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the new transmission cable to be added.

[0041] In this technical solution, parameters can be shared and circulated among designers of corresponding projects.

[0042] From the above, it can be seen that the present application provides a method for designing a power distribution network, which can first compare and analyze to determine the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the new substation, and then compare and analyze to determine the parameters of the retained transmission cable, the parameters of the replacement transmission cable, and the parameters of the new transmission cable, wherein the parameters of the substation to be retained, the parameters of the substation to be replaced, the parameters of the new substation, the parameters of the retained transmission cable, the parameters of the replacement transmission cable, and the parameters of the new transmission cable are determined and accurate guiding parameters to support the subsequent power distribution network design. The design schemes of different planners have a high consistency in key parameters, so that the design of the distribution network has a global coordination concept, thereby ensuring the operating efficiency and stability of the entire distribution network after the transformation; in addition, it can also determine the part of the substation currently in use that will continue to be retained, thereby reducing the transformation cost of the current distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flow chart of the power distribution network design method in an embodiment of the present application;

[0044] Figure 2 This is a flowchart of step S3 in the embodiment of the present application;

[0045] Figure 3 This is a flowchart of step A20 in the embodiment of the present application;

[0046] Figure 4 This is a flowchart of step S4 in the embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0048] It should be noted that the development of urban and rural planning has a significant impact on the changes in electricity demand in each sub-area of ​​the distribution network. With the acceleration of urbanization and the adjustment of urban and rural planning, the electricity demand in different regions has shown a diversified trend, such as the growth of electricity demand in urban expansion and new areas, the renovation of old urban areas and the optimization of electricity demand, the development of green energy and the change of electricity demand structure, the division of functional areas and the differentiation of electricity demand. In order to adapt to these changes, the distribution network needs to be expanded, upgraded and optimized accordingly to ensure the stability and reliability of power supply and meet the growing electricity demand.

[0049] The distribution network mainly includes transmission cables, transformer stations, switchgear, reactive power compensation capacitors and other distribution equipment and ancillary facilities, among which the transmission cables play the role of distributing electric energy to multiple transformer stations. In the transformation and design process of the distribution network, the substation parameters restrict the power supply performance of the substation area, and the transmission cable parameters (including type, transmission capacity and line structure, etc.) also restrict the power supply performance of the substation area. Therefore, in the design process, it is necessary to consider the target power consumption parameters of each substation area in the distribution network, as well as the current substation parameters of each substation area in the current distribution network and the current transmission cable parameters connecting the current substation. Under the existing technical conditions, there is no more accurate guiding parameter to support it, which leads to large differences in key parameters in the design schemes of different planners.

[0050] The present application provides a power distribution network design method which aims to solve the problem that there is no more accurate guiding parameters to support the transformation design of the distribution network, resulting in large differences in key parameters in the design schemes of different planners.

[0051] A method for designing a power distribution network in an embodiment of the present application includes the following steps:

[0052] S1, obtaining the current substation parameters of each sub-area in the current distribution network, the current transmission cable parameters connecting the current substation, and the target power consumption parameters of each sub-area in the current distribution network.

[0053] In fact, the current distribution network has multiple substations, and the current transmission cables connecting the current substations are used to distribute electric energy to each substation. The current substation parameters and the current transmission cable parameters connecting the current substation are recorded when the current distribution network is accepted and starts to operate, and are updated during the inspection and maintenance process; the target power consumption parameters of each sub-area in the current distribution network are calculated based on the target power demand of the relevant sub-area and the future power consumption plan; therefore, designers can obtain three sets of initial reference related parameters: current substation parameters, current transmission cable parameters and target power consumption parameters of each sub-area.

[0054] S2, obtaining target substation parameters of each sub-area in the current distribution network according to target power consumption parameters of each sub-area in the current distribution network.

[0055] In fact, in step S2, the designer can derive the target substation parameters for each partition area in the current distribution network based on the relevant power distribution formula analysis technology, which will not be described in detail here.

[0056] S3, based on the comparative analysis of the current substation parameters, the target substation parameters and the current transmission cable parameters, the substation parameters to be retained, the substation parameters to be replaced and the substation parameters to be newly added are determined.

[0057] In fact, in step S3, the current substation parameters and the target substation parameters can be compared for each substation area. If there is no substation in the current substation area, the parameters of the new substation are determined by the target substation parameters; if there is a substation in the current substation area, the parameters of the substation to be retained and the parameters of the substation to be replaced are selected from the target substation parameters and the current substation parameters by selecting a better performance. At this point, the substation parameters to be retained, the substation parameters to be replaced, and the new substation parameters are determined as the substation design parameters and used as a definite and accurate guiding parameter to support the subsequent power distribution network design. In addition, by determining the parameters of the substation to be retained, the part of the substation currently in use that continues to be retained is determined, thereby reducing the transformation cost of the current distribution network.

[0058] S4, determining the parameters of the retained transmission cable, the parameters of the replaced transmission cable, and the parameters of the newly added transmission cable through comparative analysis based on the current transmission cable parameters, the parameters of the retained substation, the parameters of the replaced substation, and the parameters of the newly added substation.

[0059] In fact, to determine the three groups of parameters of the retained substation parameters, the replacement substation parameters, and the newly added substation parameters, the designers can analyze the target transmission cable parameters based on the relevant formula analysis technology of the transmission cable connection substation, and analyze and compare the target transmission cable parameters with the current transmission cable parameters to obtain the parameters of the retained transmission cable, the replacement transmission cable parameters, and the newly added transmission cable parameters. The parameters of the retained transmission cable, the replacement transmission cable parameters, and the newly added transmission cable parameters are combined as the determined transmission cable design parameters and used as definite and accurate guiding parameters to support the subsequent power distribution network design.

[0060] The present application provides a method for designing a power distribution network, which can first compare and analyze to determine the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the new substation, and then compare and analyze to determine the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the new transmission cable, wherein the parameters of the substation to be retained, the parameters of the substation to be replaced, the parameters of the new substation, the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the new transmission cable are used as definite and accurate guiding parameters to support the subsequent power distribution network design. The design schemes of different planners have a high consistency in key parameters, so that the design of the distribution network has a global coordination concept, thereby ensuring the operating efficiency and stability of the entire distribution network after the transformation; in addition, it can also determine the part of the substation currently in use that will continue to be retained, thereby reducing the transformation cost of the current distribution network.

[0061] Specifically, step S3 preferably includes the following steps:

[0062] A10, based on the comparative analysis of the current substation parameters and the target substation parameters, the first step of retaining the substation parameters, the first step of replacing the substation parameters and the first step of adding the substation parameters are obtained.

[0063] In fact, in step A10, the current substation parameters and the target substation parameters of each partition area can be compared. If there is no substation in the current partition area, the first step of adding a new substation parameters is obtained through the target substation parameters; if there is a substation in the current partition area, the first step of retaining the substation parameters and the first step of replacing the substation parameters are selected from the target substation parameters and the current substation parameters by selecting a better performance.

[0064] A20, according to the current transmission cable parameters, the first step of retaining the substation parameters, the first step of replacing the substation parameters and the first step of adding the substation parameters are adjusted to obtain the substation parameters to be retained, the substation parameters to be replaced and the substation parameters to be added.

[0065] In fact, in step A20, while ensuring the power supply performance of the substation parameters retained in the first step, the substation parameters replaced in the first step, and the substation parameters newly added in the first step, adjustments are made to the substation parameters retained in the first step, the substation parameters replaced in the first step, and the substation parameters newly added in the first step to match the connection parameters in the existing transmission cable to obtain the substation parameters to be retained, the substation parameters to be replaced, and the substation parameters to be newly added, thereby increasing the portion of the substation currently in use that continues to be retained and reducing the transformation cost of the current distribution network.

[0066] Preferably, in step A10:

[0067] If the partition area has current substation parameters and the power supply performance of the current substation parameters is greater than or equal to the power supply performance of the target substation parameters, the first step of retaining substation parameters is obtained according to the current substation parameters of the partition area;

[0068] If the partition area has current substation parameters and the power supply performance of the current substation parameters is less than the power supply performance of the target substation parameters, the first step of changing the substation parameters is obtained according to the target substation parameters of the partition area;

[0069] If the partition area does not have current substation parameters, the first step of adding substation parameters is obtained according to the target substation parameters of the partition area.

[0070] Through the above method, the current substation parameters and the target substation parameters are analyzed to obtain the first step of retaining substation parameters, the first step of replacing substation parameters and the first step of adding substation parameters, ensuring that the transformation cost of the current distribution network can be reduced.

[0071] Further, step A20 preferably includes the following steps:

[0072] A21, according to the current transmission cable parameters, the first step retained substation parameters, the first step replaced substation parameters and the first step newly added substation parameters are adjusted to obtain the second step retained substation parameters, the second step replaced substation parameters and the determined newly added substation parameters.

[0073] In fact, under the premise of ensuring the power supply performance of the substation parameters retained in the first step, the substation parameters replaced in the first step, and the new substation parameters added in the first step, in order to match the connection parameters in the existing transmission cable, the substation parameters retained in the first step, the substation parameters replaced in the first step, and the new substation parameters are adjusted to obtain the transmission cable parameters retained in the second step, the transmission cable parameters replaced in the second step, and the new transmission cable parameters determined, thereby increasing the portion of the currently used transmission cables that continues to be retained and reducing the transformation cost of the current distribution network.

[0074] A22, according to the second step of retaining the substation parameters, the corresponding substations are checked and compared and analyzed to obtain the third step of retaining the substation parameters and the third step of replacing the substation parameters.

[0075] A23, the third step of retaining substation parameters is to determine the parameters of the substation to be retained, and the second step of replacing the substation is combined with the third step of replacing the substation to obtain the parameters of the substation to be replaced.

[0076] In fact, since the reliability of the substations currently in use will decrease during long-term use, the corresponding substations are checked by retaining the substation parameters in the second step, eliminating the substations whose reliability is insufficient to meet the design requirements and obtaining the parameters for replacing the substations in the third step from the corresponding target substation parameters, and the parameters for replacing the substations in the third step that meet the design requirements are converted into the parameters for replacing the substations in the third step. This ensures the reliability of the operation of the distribution network after transformation.

[0077] Preferably, in step A21:

[0078] Substation adjustment parameters are introduced, and according to the connection parameters in the current transmission cable parameters and the substation adjustment parameters, the first step retained substation parameters, the first step replaced substation parameters and the first step newly added substation parameters are adjusted to obtain the second step retained substation parameters, the second step replaced substation parameters and the determined newly added substation parameters.

[0079] It should be noted that the main purpose of step A21 is to adapt the connection parameters of the transmission cable currently in use, that is, it is necessary to change the corresponding connection parameters in the first step of retaining the substation parameters, the first step of replacing the substation parameters, and the first step of adding the substation parameters. Due to the modification of the connection parameters, the relevant wiring accessories, connection switches, etc. are changed. The role of introducing the substation adjustment parameters is to limit the relevant connection parameters to a certain range (such as the cost of changing the relevant wiring accessories, connection switches, etc. is lower than the cost of replacing the substation) to prevent the relevant connection parameters from changing too much, and to limit the range of the relevant connection parameters in the second step of retaining the substation parameters, the second step of replacing the substation parameters, and determining the new substation parameters.

[0080] As an improvement of the above method, step S4 includes the following steps:

[0081] B10, based on the comparative analysis of the substation parameters to be retained, the substation parameters to be replaced and the substation parameters to be newly added, the transmission cable parameters to be retained in the first step, the transmission cable parameters to be replaced in the first step and the transmission cable parameters to be newly added are obtained.

[0082] In fact, to determine the three groups of parameters of the substation to be retained, the substation to be replaced and the new substation to be added, the designers can use the relevant formula analysis technology of the transmission cable connection substation to derive the target transmission cable parameters, and analyze and compare the target transmission cable parameters with the current transmission cable parameters to obtain the first step of retaining the transmission cable parameters, the first step of replacing the transmission cable parameters and determining the new transmission cable parameters.

[0083] B20, according to the first step of retaining the transmission cable parameters, the corresponding transmission cables are inspected and compared and analyzed to obtain the second step of retaining the transmission cable parameters and the second step of replacing the transmission cable parameters.

[0084] B30, the second step retains the transmission cable parameters to determine the transmission cable parameters, and the first step replaces the transmission cable parameters and the second step replaces the transmission cable parameters to determine the replacement transmission cable parameters.

[0085] In fact, since the reliability of the currently used transmission cables will decrease during long-term use, the corresponding transmission cables are checked by retaining the transmission cable parameters in the first step, and the transmission cables whose reliability is insufficient to meet the design requirements are eliminated. The transmission cable replacement parameters in the second step are obtained from the corresponding target transmission cable parameters, and the reliability that meets the design requirements is converted into the transmission cable replacement parameters in the second step. Ensure the reliability of the operation after the distribution network transformation.

[0086] Preferably, in step B10:

[0087] The target transmission cable type parameters are introduced, and based on the current transmission cable parameters, the target transmission cable type parameters, the retained substation parameters, the replaced substation parameters and the newly added substation parameters, comparative analysis is performed to obtain the first step of retaining the transmission cable parameters, the first step of replacing the transmission cable parameters and the determined newly added transmission cable parameters.

[0088] In fact, the types of transmission cables include overhead cables and underground cables. The target transmission cable type parameters can be compared with the current transmission cable parameters to obtain preliminary transmission cable parameters to be retained and preliminary transmission cable replacement parameters (filtered by type). Then, the parameters of the substation to be retained, the parameters of the substation to be replaced and the parameters of the new substation can be determined (the parameters need to be calculated by a preset analysis algorithm), thereby reducing the workload of obtaining the first step of retaining the transmission cable parameters and the first step of replacing the transmission cable parameters through algorithm analysis.

[0089] Specifically, it is preferred to calibrate the substations in determining the parameters of the retained substation, determining the parameters of the replacement substation, and determining the parameters of the newly added substation according to three types of long-term substations, medium-term substations, and short-term substations, and two types of actual parameters and target parameters. That is, the substation has two calibration tags, the actual parameters and the target parameters. The use period of the actual parameters in determining the parameters of the retained substation is greater than or equal to the use period of the target parameters, and the use period of the actual parameters in determining the parameters of the replacement substation and determining the parameters of the newly added substation is equal to the use period of the target parameters, which provides reference data for further optimization and transformation of the subsequent distribution network.

[0090] Specifically, it is preferred to calibrate the transmission cables in determining the parameters of the retained transmission cables, the replacement transmission cables, and the new transmission cables according to the overhead cables and the underground cables, so as to provide reference data for further optimization and transformation of the subsequent distribution network.

[0091] In addition, in a preferred embodiment of the present application, after step S4, step S5 is preferably included: outputting and determining the parameters of the substation to be retained, the parameters of the substation to be replaced, the parameters of the newly added substation, the parameters of the retained transmission cable, the parameters of the replacement transmission cable, and the parameters of the newly added transmission cable. In fact, these parameters can be output through the network. By outputting these determined substation design parameters and using them as definite and accurate guiding parameters, the designers can be guided in the subsequent design of the power distribution network, so as to realize the sharing and circulation of parameters among the designers of the corresponding project.

[0092] The above are only specific embodiments of the present application, and the present application is introduced in detail. The relevant descriptions are only used to help understand the core idea of ​​the present application, and do not limit the patent scope of the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, equivalent structures or equivalent process changes made by using the description and drawings of the present application, or directly or indirectly applied in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A method for designing a power distribution network, characterized in that: The steps include: S1, obtaining the current substation parameters of each sub-area in the current distribution network, the current transmission cable parameters connecting the current substation, and the target power consumption parameters of each sub-area in the current distribution network; S2, obtaining target substation parameters of each sub-area in the current distribution network according to target power consumption parameters of each sub-area in the current distribution network; S3, determining the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the substation to be newly added based on comparative analysis of the current substation parameters, the target substation parameters, and the current transmission cable parameters; S4, comparing and analyzing the current transmission cable parameters, the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the new substation to be added, to determine the parameters of the transmission cable to be retained, the parameters of the transmission cable to be replaced, and the parameters of the transmission cable to be added; Step S3 includes the following steps: A10, according to the comparison and analysis of the current substation parameters and the target substation parameters, the first step of retaining the substation parameters, the first step of replacing the substation parameters and the first step of adding the substation parameters are obtained; A20, adjusting the parameters of the substation to be retained in the first step, the parameters of the substation to be replaced in the first step, and the parameters of the substation to be newly added in the first step according to the current transmission cable parameters to obtain the parameters of the substation to be retained, the parameters of the substation to be replaced, and the parameters of the substation to be newly added; Step A20 includes the following steps: A21, according to the current transmission cable parameters, the first step reserved substation parameters, the first step replacement substation parameters and the first step newly added substation parameters are adjusted to obtain the second step reserved substation parameters, the second step replacement substation parameters and determine the newly added substation parameters; A22, according to the second step of retaining the substation parameters, the corresponding substation is checked and compared and analyzed to obtain the third step of retaining the substation parameters and the third step of replacing the substation parameters; A23, the third step of retaining substation parameters is to determine the parameters of the substation to be retained, and the second step of replacing the substation is combined with the third step of replacing the substation to obtain the parameters of the substation to be replaced.

2. A method for designing a power distribution network according to claim 1, characterized in that: In step A10: If the partition area has current substation parameters and the power supply performance of the current substation parameters is greater than or equal to the power supply performance of the target substation parameters, the first step of retaining substation parameters is obtained according to the current substation parameters of the partition area; If the partition area has current substation parameters and the power supply performance of the current substation parameters is less than the power supply performance of the target substation parameters, the first step of changing the substation parameters is obtained according to the target substation parameters of the partition area; If the partition area does not have current substation parameters, the first step of adding substation parameters is obtained according to the target substation parameters of the partition area.

3. A method for designing a power distribution network as claimed in claim 1, characterized in that: In step A21: Substation adjustment parameters are introduced, and according to the connection parameters in the current transmission cable parameters and the substation adjustment parameters, the first step retained substation parameters, the first step replaced substation parameters and the first step newly added substation parameters are adjusted to obtain the second step retained substation parameters, the second step replaced substation parameters and the determined newly added substation parameters.

4. A method for designing a power distribution network as claimed in claim 1, characterized in that: Step S4 includes the following steps: B10, according to the comparison and analysis of the parameters of the substation to be retained, the parameters of the substation to be replaced and the parameters of the new substation to be added, the parameters of the transmission cable to be retained in the first step, the parameters of the transmission cable to be replaced in the first step and the parameters of the transmission cable to be added are obtained; B20, according to the first step of retaining the transmission cable parameters, the corresponding transmission cables are inspected and compared and analyzed to obtain the second step of retaining the transmission cable parameters and the second step of replacing the transmission cable parameters; B30, the second step retains the transmission cable parameters to determine the transmission cable parameters, and the first step replaces the transmission cable parameters and the second step replaces the transmission cable parameters to determine the replacement transmission cable parameters.

5. A method for designing a power distribution network as claimed in claim 4, characterized in that: In step B10: The target transmission cable type parameters are introduced, and based on the current transmission cable parameters, the target transmission cable type parameters, the substation parameters to be retained, the substation parameters to be replaced, and the new substation parameters to be determined, the first step of retaining the transmission cable parameters, the first step of replacing the transmission cable parameters, and the determination of the new transmission cable parameters are compared and analyzed.

6. A method for designing a power distribution network according to any one of claims 1 to 5, characterized in that: The substations in determining the parameters of the retained substation, the replacement substation and the new substation are calibrated according to the three types of long-term substations, medium-term substations and short-term substations and the two types of actual parameters and target parameters.

7. A method for designing a power distribution network according to any one of claims 1 to 5, characterized in that: The transmission cables are calibrated according to the overhead cables and underground cables to determine the parameters of the retained transmission cables, the parameters of the replaced transmission cables, and the parameters of the newly added transmission cables.

8. A method for designing a power distribution network according to any one of claims 1 to 5, characterized in that: After step S4, step S5 is also included: outputting and determining parameters of the substation to be retained, parameters of the substation to be replaced, parameters of the substation to be newly added, parameters of the transmission cable to be retained, parameters of the transmission cable to be replaced, and parameters of the transmission cable to be newly added.

Images