Urban power distribution network line planning method and system considering electric power galleries

Abstract

The invention provides an urban power distribution network line planning method and system considering an electric power corridor, and relates to the field of power system power distribution network planning, and the specific scheme comprises the steps: carrying out the analytical expression of an electric power corridor occupied by a planning scheme according to the real street layout, and constructing a first objective function of the electric power corridor occupied by a line; by taking the minimum load distance as a second objective function and combining constraint conditions, solving to obtain the value of the minimum load moment of the planning scheme meeting the conditions in the region; solving the first objective function by taking the value of the relaxed minimum load distance as a constraint to obtain an urban power distribution network line planning scheme; according to the method, on the basis of real street layout, related constraints of urban power distribution network line planning are considered, modeling expression is carried out on the electric power galleries, and the final urban power distribution network line planning scheme is solved by combining constraints such as capacity and faults for two objective functions of minimum load moment and maximum / minimum occupied electric power galleries.

Description

Technical Field

[0001] The present invention belongs to the field of power system distribution network planning, and in particular relates to a method and system for planning urban distribution network lines taking power corridors into consideration. Background Art

[0002] Scientific planning is an important guarantee for the construction and transformation of distribution networks. The development of distribution networks must be coordinated with the economic and social development of the region under its jurisdiction; adhere to the unified planning of urban and rural power grids, cover the entire planning scope, and coordinate the promotion of urban and rural construction integration and equalization of public services; adhere to the unity of power grid planning and municipal planning, incorporate distribution network planning into urban and rural development planning and land use planning, rationally layout power supply facilities, and achieve coordinated development with other municipal infrastructure.

[0003] From the perspective of municipal planning, the construction of power corridors will affect urban landscape construction on the one hand, and may affect urban development such as land development on the other hand, affecting the construction space of other municipal infrastructure, and conflicting with the overall urban development plan; therefore, the requirements of municipal planning for urban distribution network grid planning are mainly to occupy as little power corridors as possible while meeting the power supply, and ensure that the city has sufficient corridor resources for the construction of other infrastructure and greening planning.

[0004] From the perspective of distribution network construction, occupying too few power corridors may lead to difficulties in adding new points and line corridors in the city center, and power supply shortages in some local areas. In particular, failure to occupy enough corridors in the early planning stage may lead to the inadequacy of future distribution network grid planning schemes, making it difficult to ensure the economic efficiency of power grid operation. In addition, the guiding opinions on distribution network construction and transformation mention that the construction of distribution networks should meet the principle of "one-time selection of conductors, one-time deployment of corridors, and one-time completion of civil engineering", and build distribution networks in advance to improve their adaptability to load growth. Therefore, power grid companies often tend to plan schemes that can occupy sufficient planning corridors. After occupying sufficient transmission corridors, it is guaranteed that there are sufficient planning schemes to choose from in future planning and construction, ensuring the economy and feasibility of future development of urban distribution networks. Therefore, how to select effective power corridors in limited streets to meet the current and future power grid development of the city is particularly important.

[0005] Comprehensively considering the impact of power corridors on planning, on the one hand, mathematical models can be used for planning, and the generated planning scheme is feasible, avoiding the failure of the planning scheme due to excessive occupation of the corridor; on the other hand, it ensures that the power grid company can occupy appropriate corridor resources and ensures the rationality and selectivity of the future distribution network expansion plan.

[0006] In the existing urban distribution network planning, it is often assumed that all urban streets can be selected as candidates for line planning, and the model pursues the optimal solution of the objective function, which leads to the fact that most planning schemes often occupy too many power corridors, making the initial planning scheme generated by the planning model not meet the requirements of municipal planning, and it is difficult to ensure the rationality and optimality of the planning. Summary of the invention

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a method and system for urban distribution network line planning considering power corridors. Based on the real street layout and considering the relevant constraints of urban distribution network line planning, the power corridor is modeled and expressed. For the two objective functions of minimum load moment and the most / least occupied power corridor, combined with constraints such as capacity and faults, the final urban distribution network line planning scheme is solved.

[0008] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions: A first aspect of the present invention provides a method for planning urban distribution network lines taking into account power corridors.

[0009] A method for planning urban distribution network lines considering power corridors, comprising: According to the actual street layout, the power corridor occupied by the planning scheme is analytically expressed, and the first objective function of the line occupying the power corridor is constructed; Taking the minimum load distance as the second objective function and combining the constraints, the value of the minimum load moment of the planning scheme that meets the conditions in the region is solved; Taking the value of the relaxed minimum load distance as a constraint, solving the first objective function to obtain a line planning scheme for the urban distribution network; Among them, the first objective function takes the line occupying the least / most power corridor as the objective function.

[0010] Furthermore, the analytical expression of the power corridor occupied by the planning scheme is to introduce a decision variable to represent whether to build a line on the road section, thereby obtaining an expression for the line occupying the power corridor.

[0011] Furthermore, the constraints include block load constraints, basic grid planning constraints, and single fault constraints; The basic constraints of power grid planning include distribution line capacity constraints, distribution line non-branching constraints, distribution line non-crossing constraints, substation power supply radius constraints, the number of lines allowed to be built on each street, node power balance constraints under normal circumstances, and substation output constraints under normal circumstances; The single fault constraints include distribution line capacity constraints under single faults, node power balance constraints under single faults, and substation output constraints under single faults.

[0012] Furthermore, the load distance is the sum of the power flows between any two nodes on the line; taking the minimum load distance as the objective function, the optimal value of the minimum load moment is solved and obtained as the value of the minimum load moment.

[0013] Furthermore, it also includes: solving the problem of adding cost limit constraints when the line occupies the most power corridor, and the cost includes the annual investment cost of the line and the construction cost of the power corridor.

[0014] Furthermore, the corridor construction cost is used to characterize the impact of corridor occupancy on distribution network line planning, and is calculated based on the optimal path length of the feeder segment, the investment per unit length of the power corridor, and the line occupancy of the power corridor.

[0015] Furthermore, the solution is based on a linearization method to process the nonlinear part of the model, convert the entire model into a mixed integer linear programming model, and then solve the model through a CPLEX solver.

[0016] A second aspect of the present invention provides an urban distribution network line planning system taking power corridors into consideration.

[0017] A system for planning urban distribution network lines considering power corridors, including a construction module, a solution module and a planning module: The construction module is configured to: analyze and express the power corridor occupied by the planning scheme according to the actual street layout, and construct the first objective function of the line occupying the power corridor; The solution module is configured to: take the minimum load distance as the second objective function, combine the constraint conditions, and solve the value of the minimum load moment of the planning scheme that meets the conditions in the area; The planning module is configured to: solve the first objective function by taking the value of the relaxed minimum load distance as a constraint to obtain a line planning scheme for the urban distribution network; Among them, the first objective function takes the line occupying the least / most power corridor as the objective function.

[0018] A third aspect of the present invention provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in a method for planning urban distribution network lines taking into account power corridors as described in the first aspect of the present invention.

[0019] The fourth aspect of the present invention provides an electronic device, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps in a method for planning urban distribution network lines taking into account power corridors as described in the first aspect of the present invention are implemented.

[0020] One or more of the above technical solutions have the following beneficial effects: The present invention considers the influence of line occupation of power corridor on urban distribution network line planning from the two perspectives of municipal planning and distribution network construction, constructs two objective functions of occupying the most / least power corridors, and obtains the final urban distribution network line planning scheme based on the minimum load moment and constraints.

[0021] The present invention takes into account the characteristics of actual urban distribution networks and is based on real street layouts. The optimization result has strong adaptability and high engineering reference value.

[0022] The present invention completes the modeling of the power corridor and can be used as an objective function or constraint in the line planning model of the urban distribution network.

[0023] The present invention applies the priority target programming method to process the two objective functions of minimum load moment and most / least occupied power corridors, thereby ensuring that the planning results can better meet the actual needs of municipal planning and power companies respectively.

[0024] When the present invention uses the priority target programming method to process two target functions, multiple feasible results are obtained according to different relaxations of the first-level target, which meets the actual needs of on-site planners.

[0025] The present invention also provides corresponding processing measures for the traditional cost as the objective function, and can fully consider the impact of the corridor on the distribution network line planning.

[0026] The present invention adopts a mixed integer linear programming algorithm to improve the computer's solving ability by converting complex problems into relatively simple linear problems.

[0027] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 This is a flow chart of the method of the first embodiment. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Fully considering the scope of the power corridor to be occupied in the planning model can improve the practicality of the planning model and the feasibility of the planning scheme; and under normal circumstances, there may be multiple different planning schemes in the planning process, and the objective functions are close to the minimum objective function. In reality, planners are often willing to give up a small part of the economic benefits to choose an urban distribution network line planning scheme that better meets actual needs. Therefore, how to deal with the two planning goals of the number of power corridors occupied by the planning scheme and the original objective function is also the focus of urban distribution network line planning.

[0033] The present invention adopts the priority target programming method to construct a two-layer urban distribution network line planning model. After appropriately relaxing the load moment objective function obtained by the first-layer optimization, it is used as a constraint for the lower-layer optimization. Then, the maximum / minimum occupied power corridor is used as the objective function of the second-layer optimization. The constraints of the second-layer optimization include the constraints constructed based on the optimal objective function of the first layer and other constraints of the second-layer optimization, thereby ensuring that the planning results can better meet the actual needs of municipal planning and power companies respectively.

[0034] Embodiment 1 In one embodiment of the present disclosure, a method for planning urban distribution network lines taking into account power corridors is provided, such as Figure 1 As shown, the following steps are included: Step S1: According to the actual street layout, the power corridor occupied by the planning scheme is analytically expressed to construct the first objective function of the line occupying the power corridor.

[0035] In order to analyze the occupancy of the power corridor, the following formula is introduced: (1) (2) in, Represents a collection of construction lines, b s,l and c s is a 0 / 1 decision variable, b s,l Indicates whether it is on the road segment s Construction line l , the variable value is 1 for construction, and 0 for no construction; cs It is a 0 / 1 variable, indicating the road section s Whether it is occupied as a power corridor, the variable value is 1 for the section s The occupied section is the power corridor, and the value 0 indicates that it is not occupied. Formula (1) indicates that the road section s If there is no line construction on the section, then it must not be occupied as a power corridor. Formula (2) indicates that when the section s If there is line construction on it, then it must be occupied as a power corridor; M is a constant, and its value is a larger constant, and its value should be greater than or equal to the road section s The number of lines allowed to be built.

[0036] Based on road segment s Whether it is occupied is a 0 / 1 variable c for the power corridor s , the two first objective functions of occupying the most / least power corridors are expressed analytically as follows; (3) (4) in, N S is the set of branches to be selected.

[0037] Considering the influence of the line length of different power corridors, we can further assign corresponding coefficients according to the length of the section to form the following first objective function: (5) (6) in, L s Representative road sections s Length.

[0038] Step S2: Taking the minimum load distance as the second objective function and combining the constraint conditions, the value of the minimum load moment of the planning scheme that meets the conditions in the area is solved.

[0039] The second objective function is expressed as: (7) in, length s is the length of the branch to be selected; i For road section s The left node of j For road section s The right end node of P i,j,l and P j,i,l Respectively indicate lines l Up from the nodei Flow to Node j and slave nodes j Flow to Node i trend.

[0040] The constraints include block load constraints, basic grid planning constraints, and single fault constraints.

[0041] The basic constraints of power grid planning include distribution line capacity constraints, distribution line non-branching constraints, distribution line non-crossing constraints, substation power supply radius constraints, the number of lines allowed to be built on each street, node power balance constraints under normal circumstances, and substation output constraints under normal circumstances; The single fault constraints include distribution line capacity constraints under single faults, node power balance constraints under single faults, and substation output constraints under single faults.

[0042] Specifically, the constraints are: (1) Block load constraints (8) (9) (10) (11) (12) in, NB Gather blocks to be planned; NS is a set of branches to be selected; NJ is a set of road section intersections; Indicates b The load in the block is s Equivalent load value on the road section; parameter H b,s Describes the neighborhood b With road section s The connection between the blocks b With road section s When adjacent, H b,s =1 ;otherwise H b,s =0 ; Indicates line l For b Block No. s The power supply to the loads on a road section.

[0043] 2) Distribution line capacity constraints under normal circumstances (13) (14) in, In normal circumstances, the line l The capacity limit of b s,l is a decision variable, indicating whether s Construction line l .

[0044] 3) Power balance constraints under normal circumstances (15) in, In normal situation, the substation is at node j The equivalent output.

[0045] 4) Substation output constraints under normal circumstances (16) (17) in, N G represents the set of substation nodes to be selected; Indicates that the substation is at the node j output limit.

[0046] 5) Substation power supply radius constraints (18) in, R max Indicates the power supply radius of the substation.

[0047] 6) Constraints on the number of lines allowed to be built on each street (19) (20) in, Indicates road segment s The upper limit of the number of lines allowed to be built on the road; Formula (20) indicates that if the road section s If there is an equivalent load on the road section, at least one line must be built on the road section.

[0048] 7) Distribution line non-branching constraints (twenty one) Formula (21) indicates that at any node j , when the line l Passing Node j When, line l There will be no bifurcation at this point.

[0049] 8) Lines do not cross constraints (twenty two) Among them, the parameters Indicates road segment s Intersection with four road segments j If the connection relationship s and j Disconnected or intersection points j If the four segments are not connected, Assign 0; if s and j Connected and j If there are four sections connected, start from any section at random and follow the sequence in clockwise order. j Each connected road segment corresponds to Assign values ​​0,1,0,1; that is, j The four connected sections, in clockwise order, the first section Assign 0 to the first segment, assign 1 to the second segment, assign 0 to the third segment, and assign 1 to the fourth segment. l 1 , l 2 represents any two lines; N 4 Represents a set of intersections connecting four road segments; , They are all 0 / 1 variables.

[0050] The possible values ​​of the middle term in formula (22) are 0, 1, 2, 3, and 4. s and j Not connected, or j When the number of connected road segments is not 4, the above formula is naturally satisfied; when s and j Connected and j When the number of connected road segments is 4, due to The definition of l 1 The two sections passed correspond to When all are 1(0), is equal to 2(0); when l 2 and l 1 When crossing, is equal to 2(0); it can be seen that the line l 1 , l 2 Crossing corresponds to the middle term of the inequality being equal to 0 or 4. Therefore, constraint (22) can ensure that the two lines do not cross.

[0051] 9) Load block power supply constraints in the event of a single substation failure (twenty three) Among them, with subscript w , indicating that the variable is the variable corresponding to w Variables for substation failures, all of the following with subscripts w This is true for all variables.

[0052] 10) Substation output constraints in case of single substation failure (twenty four) (25) (26) 11) Power balance constraints in case of single substation failure (27) 12) Line capacity constraints in case of single substation failure (28) (29) Based on the above, equation (7) is used as the first objective function, and equations (8)-(29) are used as constraints to solve the minimum load moment value of the planning scheme that meets the conditions in the area.

[0053] Step S3: Using the value of the relaxed minimum load distance as a constraint, solving the first objective function to obtain a line planning scheme for the urban distribution network.

[0054] After step S2 is completed, the optimal value of the minimum load moment of the preliminary planning scheme can be obtained. After appropriately relaxing the optimal value of the minimum load moment, the load distance relaxation constraint is constructed, which is expressed as follows: (30) in, represents the slack variable, M min Represents the value of the minimum load moment obtained in the preliminary planning.

[0055] When the occupied corridor with the most power is used as the first objective function, in order to prevent the model from blindly pursuing the maximum value of the objective function, thereby occupying too many corridors, resulting in excessive cost growth and unreasonable planning results, the cost limit constraint is introduced on the basis of the constraints of equations (8)-(29). The specific expression is as follows: (31) (32) (33) in, C inv is the annual investment cost of the line; NL , NS is the total number of lines and sections within the planning area; n The economic useful life; r 0 is the discount rate; d 1 Investment per unit length of feeder; L s is the optimal path length of the feeder segment; b s,l is a 0 / 1 decision variable, indicating whether s Construction line l ; C corr is the construction cost of the power corridor, d 3 Investment per unit length of power corridor; G is the upper limit of the given total investment cost. After limiting the total investment cost, taking the most occupied power corridor as the planning goal can get a reasonable solution that meets the actual needs of the power company.

[0056] According to the different needs of different entities, based on the objective function and constraints mentioned above, two urban distribution network line planning models considering power corridors are proposed; planners can choose the one that best suits them for planning from these two models according to their actual needs.

[0057] Model 1: From the perspective of the municipal administration, the planning scheme should occupy as few power corridors as possible to avoid occupying too many corridors and affecting the overall planning layout of the city. First, (7) is used as the objective function and (8)-(29) are used as constraints for planning to obtain the value of the load moment of the planning result. In the second step, (3) is used as the objective function (if the influence of different road section lengths is considered, (5) can be used as the objective function), and (1)-(2), (8)-(30) are used as constraints to plan the urban distribution network lines and obtain the final planning result.

[0058] Model 2: From the perspective of the power grid company, in the planning results, as many power corridors as possible are used to ensure the future expansion needs of the distribution network. First, (7) is used as the objective function and (8)-(29) are used as constraints for planning to obtain the value of the load moment of the planning result. In the second step, (4) is used as the objective function (if the influence of different road section lengths is considered, (6) can be used as the objective function), and (1)-(2), (8)-(33) are used as constraints to plan the urban distribution network lines and obtain the final planning results.

[0059] According to the linearization method, the nonlinear part of the model is processed so that the entire model is transformed into a mixed integer linear programming model. Analysis shows that the nonlinear components only exist in the objective function (7) and the constraint (30).

[0060] For the objective function (7), the absolute value term presents nonlinearity. Further analysis shows that since the absolute value terms are all in the objective function and are minimized, the absolute value terms can be processed by equivalent linearization. Taking the second objective function of formula (7) as an example, its equivalent linearization form is: (34) in, is an introduced auxiliary variable.

[0061] For constraint (30), after analysis, it is found that since the expression of formula (30) is a term containing an absolute value less than a constant value, it can be linearized using the same method as formula (34).

[0062] After linearizing the absolute value terms in the model, the entire optimization model does not contain any nonlinear components and is a mixed integer linear programming model. It can be solved using the mature commercial mixed integer linear programming solver CPLEX.

[0063] CPLEX is an optimization engine from IBM; it is used to solve four basic problems: linear programming (LP), quadratic programming (QP), constrained quadratic programming (QCQP), second-order cone programming (SOCP), and the corresponding mixed integer programming (MIP) problems. CPLEX has the following advantages: (1) it can solve some very difficult industry problems; (2) it can solve problems very quickly; and (3) it can sometimes provide the advantage of super linear acceleration.

[0064] This embodiment constructs a mixed integer linear programming model for urban distribution network lines, which can be planned under the condition of considering street layout. The simulation operation is more comprehensive, the optimization results are more reliable and comprehensive, and the engineering application value of distribution network line planning is improved.

[0065] This embodiment takes into account the modeling problem of power corridors, and analytically expresses the power corridors occupied by the planning scheme, which fully meets the actual planning needs.

[0066] This embodiment constructs an urban distribution network line planning model that takes power corridors into consideration. From the perspective of municipal planning, the planning scheme that occupies the least power corridor is considered; from the perspective of the power company, the planning scheme that occupies the most power corridor is considered; the priority target programming method is then used to process the two objective functions of the most / least occupied power corridors and the minimum load moment, and the urban distribution network line planning is obtained under the condition of losing part of the original minimum load moment objective function, so that the urban distribution network line planning scheme that better meets actual needs is obtained; in addition, the nonlinear optimization problem is converted into a completely linear optimization problem, so that a mixed integer linear programming algorithm can be used for solution, thereby improving the efficiency and reliability of the model solution.

[0067] This example can obtain multiple feasible solutions for on-site selection according to different relaxation values ​​of the priority target planning and different cost coefficients in the cost, which has excellent on-site practicality.

[0068] Embodiment 2 In one embodiment of the present disclosure, a system for planning urban distribution network lines taking into account power corridors is provided, including a construction module, a solution module and a planning module: The construction module is configured to: analyze and express the power corridor occupied by the planning scheme according to the actual street layout, and construct the first objective function of the line occupying the power corridor; The solution module is configured to: take the minimum load distance as the second objective function, combine the constraint conditions, and solve the value of the minimum load moment of the planning scheme that meets the conditions in the area; The planning module is configured to: solve the first objective function by taking the value of the relaxed minimum load distance as a constraint to obtain a line planning scheme for the urban distribution network; Among them, the first objective function takes the line occupying the least / most power corridor as the objective function.

[0069] Embodiment 3 The purpose of this embodiment is to provide a computer-readable storage medium.

[0070] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in a method for planning urban distribution network lines taking into account power corridors as described in the first embodiment of the present disclosure.

[0071] Embodiment 4 The purpose of this embodiment is to provide an electronic device.

[0072] An electronic device includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, the steps in a method for planning urban distribution network lines taking into account power corridors as described in Embodiment 1 of the present disclosure are implemented.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for planning urban distribution network lines considering power corridors, characterized in that: include: According to the actual street layout, the power corridor occupied by the planning scheme is analytically expressed, and the first objective function of the line occupying the power corridor is constructed; Taking the minimum load distance as the second objective function and combining the constraints, the value of the minimum load moment of the planning scheme that meets the conditions in the region is solved; Taking the value of the relaxed minimum load distance as a constraint, solving the first objective function to obtain a line planning scheme for the urban distribution network; Among them, the first objective function takes the line occupying the least / most power corridor as the objective function.

2. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 1, characterized in that: The analytical expression of the power corridor occupied by the planning scheme is to introduce a decision variable to represent whether to build a line on the road section, so as to obtain an expression for the line occupying the power corridor.

3. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 1, characterized in that: The constraints include block load constraints, basic grid planning constraints, and single fault constraints; The basic constraints of power grid planning include distribution line capacity constraints, distribution line non-branching constraints, distribution line non-crossing constraints, substation power supply radius constraints, the number of lines allowed to be built on each street, node power balance constraints under normal circumstances, and substation output constraints under normal circumstances; The single fault constraints include distribution line capacity constraints under single faults, node power balance constraints under single faults, and substation output constraints under single faults.

4. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 1, characterized in that: The load distance is the sum of the power flows between any two nodes on the line; taking the minimum load distance as the objective function, the optimal value of the minimum load moment is solved and obtained as the value of the minimum load moment.

5. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 1, characterized in that: Also includes: When solving the problem of the line occupying the most power corridor, a cost constraint is added, where the cost includes the annual investment cost of the line and the construction cost of the power corridor.

6. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 5, characterized in that: The corridor construction cost is used to characterize the impact of corridor occupancy on the distribution network line planning, and is calculated based on the optimal path length of the feeder segment, the investment per unit length of the power corridor, and the line occupation of the power corridor.

7. A method for planning urban distribution network lines taking into account power corridors as claimed in claim 1, characterized in that: The solution is to process the nonlinear part in the model according to the linearization method, convert the whole model into a mixed integer linear programming model, and then solve the model through the CPLEX solver.

8. A system for planning urban distribution network lines taking into account power corridors, characterized in that: Including building module, solving module and planning module: The construction module is configured to: analyze and express the power corridor occupied by the planning scheme according to the actual street layout, and construct the first objective function of the line occupying the power corridor; The solution module is configured to: take the minimum load distance as the second objective function, combine the constraint conditions, and solve the value of the minimum load moment of the planning scheme that meets the conditions in the area; The planning module is configured to: solve the first objective function by taking the value of the relaxed minimum load distance as a constraint to obtain a line planning scheme for the urban distribution network; Among them, the first objective function takes the line occupying the least / most power corridor as the objective function.

9. A non-transitory computer-readable storage medium, characterized in that: The non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by the processor, a method for planning urban distribution network lines considering power corridors as described in any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: include: A processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory so that the electronic device executes a method for planning urban distribution network lines taking into account power corridors as described in any one of claims 1 to 7.

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