Method, apparatus, readable medium and electronic device for determining steam pipe network structure

Abstract

The present invention discloses a method, device, readable medium and electronic device for determining a steam pipe network structure. The method includes: determining road network data and user load data within the area where the steam pipe network is to be installed; constructing an optimization model for the steam pipe network according to the road network data and the user load data, where the optimization model for the steam pipe network includes an objective function and constraint conditions; and determining the structure of the steam pipe network according to the optimization model for the steam pipe network. The technical solution provided by the present invention constructs an optimization model for the steam pipe network by considering the characteristics of the road network and the user load characteristics, and determines the structure of the steam pipe network according to the optimization model for the steam pipe network. The determined steam pipe network structure is more reasonable, can reduce the energy loss of the steam pipe network, improve the energy utilization efficiency, and is beneficial to the improvement of the energy efficiency and economic performance of the energy station.

Description

Technical Field

[0001] The present invention relates to the field of energy, and particularly to a method, apparatus, readable medium, and electronic device for determining the structure of a steam pipe network. Background Art

[0002] The steam pipe network is a key transmission channel for transporting the steam from the energy station to the steam users. The structure of the steam pipe network has an important impact on the energy efficiency and economic performance of the energy station.

[0003] Currently, the structure of the steam pipe network is mostly designed by designers, which makes the structure of the steam pipe network directly related to the experience and level of the designers. There may be a situation where the structure design of the steam pipe network is unreasonable. An unreasonably structured steam pipe network will have a large amount of energy loss during the pipe network transportation process, resulting in a low operating efficiency of the steam pipe network and seriously affecting the energy efficiency of the energy station. Therefore, determining a reasonably designed steam pipe network structure is of great significance for reducing the energy loss of the steam pipe network and improving the energy utilization efficiency. Summary of the Invention

[0004] The present invention provides a method, apparatus, readable medium, and electronic device for determining the structure of a steam pipe network. By considering the road network characteristics and user load characteristics, a steam pipe network optimization model is constructed, and based on this steam pipe network optimization model, the structure of the steam pipe network is determined. The determined steam pipe network structure is more reasonable, which can reduce the energy loss of the steam pipe network, improve the energy utilization efficiency, and is beneficial to the improvement of the energy efficiency and economic performance of the energy station.

[0005] In a first aspect, the present invention provides a method for determining the structure of a steam pipe network, including:

[0006] Determine the road network data and user load data within the area to be set up for the steam pipe network;

[0007] According to the road network data and the user load data, construct a steam pipe network optimization model, where the steam pipe network optimization model includes an objective function and constraint conditions;

[0008] According to the steam pipe network optimization model, determine the structure of the steam pipe network.

[0009] Preferably,

[0010] The objective function is as follows:

[0011] minC = C v + C O ;

[0012] where C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost.

[0013] Preferably,

[0014] The specific formula for the average annual pipe network investment cost is as follows:

[0015]

[0016] where d ij represents the pipe diameter level of the connecting pipe ij between road network node i and road network node j, is an integer variable, and 0 ≤ d ij ≤ MaxDia, where MaxDia is the maximum pipe diameter level; p represents the unit price of the pipe; L represents the pipe life; r represents the residual value rate; arcs represents the set of connectable pipes ij in the road network; D ij represents the length between pipes ij;

[0017] The specific formula for the pipe loss cost is as follows:

[0018]

[0019] where G ij represents the steam flow of pipe ij; λ represents the friction factor along the length; ρ represents the fluid density.

[0020] Preferably,

[0021] The road network data includes the coordinates of the energy station, the coordinates of the road network nodes, and the coordinates of the center points of the plots;

[0022] The user load data includes the user's steam parameters, flow data, and pressure data.

[0023] Preferably,

[0024] The constraint conditions are determined according to the pipe section connection and pipe diameter relationship, the energy station capacity, the number of pipes, the number of pipe inflows at the node, the pipe section flow, the coupling relationship between the pipe section pressure loss and the flow and pipe diameter, the number of pipe inflows at the plot node, the plot pressure, the plot flow balance, and the node pressure.

[0025] Preferably,

[0026] The constraint conditions include:

[0027] The constraint on the pipe section connection and pipe diameter relationship, the specific formula is as follows:

[0028]

[0029] where x ij represents whether the pipe ij is connected, is an integer variable, 1 means connected, and 0 means not connected;

[0030] The capacity constraint of the energy station is as follows:

[0031]

[0032] Among them, IES_cap_0 represents the maximum steam capacity of the energy station; I0 represents the set of nodes connected to the energy station at node 0; G 0j represents the steam flow rate of pipeline 0j with the energy station node as the first section;

[0033] The pipeline quantity constraint is as follows:

[0034]

[0035] Among them, MaxL represents the maximum number of pipelines at the outlet of the energy station;

[0036] The inflow quantity constraint of the node pipeline is as follows:

[0037]

[0038] Among them, N represents the set of all nodes, including the energy station node and the plot nodes; I j represents the set of nodes connected to node j;

[0039] The pipe segment flow constraint is as follows:

[0040]

[0041] The coupling constraint of the pipe segment pressure loss with the flow rate and pipe diameter is as follows:

[0042]

[0043] Among them, P i represents the pressure at node i; P j represents the pressure at node j;

[0044] The inflow pipeline quantity constraint of the plot node is as follows:

[0045]

[0046] Among them, B k represents the set of nodes belonging to plot k; Block represents the set of plots;

[0047] The plot pressure constraint is as follows:

[0048]

[0049] Among them, P kThe lower limit of the pressure of plot k;

[0050] The plot flow balance constraint, and the specific formula is as follows:

[0051]

[0052] where G k,load represents the load of plot k;

[0053] The node pressure constraint, and the specific formula is as follows:

[0054]

[0055] The routing node flow balance constraint, and the specific formula is as follows:

[0056]

[0057] where N net represents the set of routing nodes, excluding the energy station nodes and plot nodes.

[0058] In a second aspect, the present invention provides a device for determining a steam pipe network structure, including:

[0059] A data determination module, configured to determine road network data and user load data in the area to be set up for the steam pipe network;

[0060] A model construction module, configured to construct an optimization model for the steam pipe network according to the road network data and the user load data, where the optimization model for the steam pipe network includes an objective function and constraint conditions;

[0061] A structure determination module, configured to determine the structure of the steam pipe network according to the optimization model for the steam pipe network.

[0062] Preferably,

[0063] The objective function is as follows:

[0064] minC = C v + C O ;

[0065] where C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost.

[0066] In a third aspect, the present invention provides a readable medium, including execution instructions, and when a processor of an electronic device executes the execution instructions, the electronic device executes the method according to any one of the first aspect.

[0067] Fourthly, the present invention provides an electronic device, including a processor and a memory storing execution instructions. When the processor executes the execution instructions stored in the memory, the processor executes the method according to any one of the first aspect.

[0068] The present invention provides a method, an apparatus, a readable medium and an electronic device for determining a steam pipe network structure. By determining road network data and user load data in a to-be-designed area of the steam pipe network; then, according to the road network data and the user load data, constructing a steam pipe network optimization model, where the steam pipe network optimization model is composed of an objective function and constraint conditions; further solving the constructed steam pipe network optimization model and determining the steam pipe network structure corresponding to the optimal solution. The method for determining the steam pipe network structure provided by the present invention constructs a steam pipe network optimization model by considering the road network characteristics and user load characteristics, and determines the steam pipe network structure according to the steam pipe network optimization model. The determined steam pipe network structure is more reasonable, can reduce the energy loss of the steam pipe network, improve the energy utilization efficiency, and is beneficial to the improvement of the energy efficiency and economic performance of the energy station. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0070] Figure 1 It is a schematic flow chart of a method for determining a steam pipe network structure provided in an embodiment of the present invention;

[0071] Figure 2 It is a schematic structural diagram of an apparatus for determining a steam pipe network structure provided in an embodiment of the present invention;

[0072] Figure 3 It is a schematic structural diagram of an electronic device provided in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0073] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0074] Such as Figure 1As shown in the figure, an embodiment of the present invention provides a method for determining a steam pipe network structure, the method comprising:

[0075] Step 101, determining road network data and user load data in the area to be provided with a steam pipe network;

[0076] Step 102, constructing a steam pipe network optimization model according to the road network data and the user load data, the steam pipe network optimization model including an objective function and constraint conditions;

[0077] Step 103, determining the structure of the steam pipe network according to the steam pipe network optimization model.

[0078] As Figure 1 shown in the embodiment, by determining the road network data and user load data in the area to be provided with a steam pipe network; then constructing a steam pipe network optimization model according to the road network data and the user load data, where the steam pipe network optimization model consists of an objective function and constraint conditions; further solving the constructed steam pipe network optimization model to determine the structure of the steam pipe network corresponding to the optimal solution. The method for determining the steam pipe network structure provided by the present invention constructs a steam pipe network optimization model by considering the road network characteristics and user load characteristics, and determines the steam pipe network structure according to the steam pipe network optimization model. The determined steam pipe network structure is more reasonable, can reduce the energy loss of the steam pipe network, improve the energy utilization efficiency, and is beneficial to the improvement of the energy efficiency and economic performance of the energy station.

[0079] It should be noted that the area to be provided with a steam pipe network mentioned in this embodiment may be an area where no steam pipe network has been laid, or an area where part of the steam pipe network has been laid. Of course, it may also be an area where a steam pipe network has been laid and the laid steam pipe network needs to be optimized. This embodiment does not make any limitations in this regard.

[0080] In an embodiment of the present invention, the formula of the objective function is as shown in the following formula (1):

[0081] minC = C v + C O ; (1)

[0082] where C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost.

[0083] In the above embodiment, the objective function is obtained by comprehensively considering the average annual pipe network investment cost and the pipe loss cost. Taking the minimum value of the sum of the average annual pipe network investment cost and the pipe loss cost as the objective function, that is, the determined steam pipe network structure can minimize the sum of the average annual pipe network investment cost and the pipe loss cost, thereby effectively improving the economy of the energy station.

[0084] Specifically, the formula for the annual average pipe network investment cost is as shown in the following formula (2):

[0085]

[0086] where d ij represents the pipe diameter level of the connecting pipe ij between road network node i and road network node j, which is an integer variable, and 0 ≤ d ij ≤ MaxDia, where MaxDia is the maximum pipe diameter level; p represents the unit price of the pipe; L represents the pipe life; r represents the salvage value rate; arcs represents the set of connectable pipes ij in the road network; D ij represents the length between pipes ij;

[0087] The formula for the pipe loss cost is as shown in the following formula (3):

[0088]

[0089] where G ij represents the steam flow rate of pipe ij; λ represents the friction factor; ρ represents the fluid density.

[0090] In formula (2), the pipe loss cost can be regarded as the pressure loss cost, which is mainly related to the pipe diameter, flow velocity, etc. It can be seen from formulas (1), (2) and (3) that the objective function is a function of the connection path of the steam pipe network, the pipe diameter and the steam flow rate corresponding to the pipe. By solving this objective function, the connection path of the steam pipe network, the pipe diameter and the steam flow rate can be obtained, so that the steam pipe network structure can be further determined.

[0091] In an embodiment of the present invention, the road network data includes the coordinates of the energy station, the coordinates of the road network nodes, and the coordinates of the center points of the plots; the user load data includes the user steam parameters, flow data, and pressure data.

[0092] In the above embodiment, the road network data can reflect the characteristics of the urban road network and the distribution characteristics of the functional plots, and the user load data can reflect the load characteristics of the users. Therefore, the steam pipe network optimization model constructed based on the road network data and the user load data can better reflect the situation of the area where the steam pipe network is to be set up. Therefore, the steam pipe network structure determined according to this steam pipe network optimization model has higher rationality.

[0093] In an embodiment of the present invention, the constraint conditions are determined according to the pipe section connection and pipe diameter relationship, energy station capacity, number of pipes, number of pipes flowing into the node, pipe section flow rate, coupling relationship between pipe section pressure loss and flow rate and pipe diameter, number of pipes flowing into the plot node, plot pressure, plot flow balance, and node pressure.

[0094] In the above embodiments, the constraint conditions are determined by comprehensively considering the routing of the pipeline network, the grades of the pipe diameters, and the balance of the pressure losses of the pipe segments, so that the solution of the steam pipeline network optimization model obtained under these constraint conditions is more reasonable. Specifically, the constraint conditions include:

[0095] Constraint on the connection of pipe segments and the pipe diameter relationship, as shown in the following formula (4):

[0096]

[0097] where x ij represents whether the pipeline ij is connected, which is an integer variable, 1 means connected, and 0 means not connected;

[0098] Formula (4) means that when nodes i and j are connected, the pipe diameter level of pipeline ij should also be less than the maximum pipe diameter level. In formula (4), 0 ≤ d ij ≤ MaxDia. When nodes i and j are connected, x ij = 1, that is, MaxDia >> d ij ; when nodes i and j are not connected, at this time x ij = 0. Since nodes i and j are not connected, there is no pipe diameter level for the connected pipeline ij, that is, d ij is 0 at this time. Therefore, there is a constraint condition for the connection of pipe segments and the pipe diameter as shown in formula (4).

[0099] Energy station capacity constraint, as shown in the following formula (5):

[0100]

[0101] where IES_cap_0 represents the maximum steam capacity of the energy station; I0 represents the set of nodes connected to the energy station at node 0; G 0j represents the steam flow of pipeline 0j with the energy station node as the first section;

[0102] Formula (5) means that the total steam flow flowing out of the energy station at node 0 through pipeline 0j is less than the maximum steam capacity of the energy station at node 0. The steam pipeline network transports the steam from the energy station to users. Therefore, the total steam flow flowing out of the energy station must be less than or equal to the maximum steam capacity of the energy station, so there is a constraint condition as shown in formula (5).

[0103] Pipeline quantity constraint, as shown in the following formula (6):

[0104]

[0105] where MaxL represents the maximum number of pipelines at the energy station outlet;

[0106] Equation (6) indicates that the number of pipelines connected to the energy station is less than or equal to the maximum number of pipelines at the outlet of the energy station. The energy station is node 0, and I0 represents the set of nodes connected to node 0. However, there is a maximum limit on the number of pipelines at the outlet of the energy station. Therefore, the number of pipelines connected to node 0 must be within this maximum limit, resulting in the constraint condition shown in Equation (6).

[0107] The constraint on the inflow quantity of pipelines to a node is as shown in Equation (7) below:

[0108]

[0109] Among them, N represents the set of all nodes, including the energy station node and the plot nodes; I j represents the set of nodes connected to node j;

[0110] Equation (7) means that for node j, it can be connected to node i or not. But if it is connected, there is only one node i that can be connected to node j. Here, the plot node refers to the node located within the plot.

[0111] The constraint on the flow rate of pipeline segments is as shown in Equation (8) below:

[0112]

[0113] Equation (8) is used to limit the variable range and can accelerate the solution speed of the steam pipe network optimization model.

[0114] The coupling constraint of the pressure loss, flow rate, and pipe diameter of pipeline segments is as shown in Equation (9) below:

[0115]

[0116] Among them, P i represents the pressure of node i; P j represents the pressure of node j;

[0117] Equation (9) indicates the relationship between the pressure loss of pipeline ij and the flow velocity and pipe diameter when node i and node j are connected.

[0118] The constraint on the inflow quantity of pipelines to plot nodes is as shown in Equation (10) below:

[0119]

[0120] Among them, B k represents the set of nodes belonging to plot k; Block represents the set of plots;

[0121] Equation (10) means that for all nodes j in plot k, considering the nodes i connected to node j at the same time, the cumulative connection between the two is less than or equal to 1, so as to achieve the purpose that there is at most one input pipeline connecting plot k.

[0122] The plot pressure constraint is shown in the following equation (11):

[0123]

[0124] Where, P k Represents the lower limit of the pressure of plot k;

[0125] Equation (11) means that when node i belongs to plot k, the pressure corresponding to node i should be greater than the lower limit of the pressure of plot k.

[0126] The plot flow balance constraint is shown in the following equation (12):

[0127]

[0128] Where, G k,load Represents the load of plot k;

[0129] Equation (12) means that the difference between the total steam flow into plot k and the total steam flow out of plot k is not less than the load of plot k.

[0130] The node pressure constraint is shown in the following equation (13):

[0131]

[0132] Equation (13) means that when there is a connection between node i and node j, the pressure of node j should be less than or equal to 1000, that is, when x ij = 1, P j ≤1000, when x ij = 0, P j = 0.

[0133] The routing node flow balance constraint is shown in the following equation (14):

[0134]

[0135] Where, N net Represents the set of routing nodes, excluding the energy station nodes and plot nodes.

[0136] Equation (14) means that the total steam flow into the routing nodes is equal to the total steam flow out of the routing nodes, where the routing nodes refer to the nodes that transport steam from the energy station nodes to the plot nodes and are not located within the plots.

[0137] The optimization model of the steam pipe network is composed of equations (1) - (14). By solving this optimization model of the steam pipe network, the optimal solution obtained corresponds to the steam pipe network structure, and this steam pipe network structure can minimize the sum of equipment costs and operating costs. This steam pipe network structure includes the pipeline connection method for supplying steam to each plot, the diameter of each pipeline, the pressure and steam flow rate of the nodes, etc. The structure is more reasonable, which can reduce the energy loss of the steam pipe network and improve the energy utilization efficiency. Specifically, when solving this optimization model of the steam pipe network, methods such as the Benders decomposition method, the Lagrangian relaxation method, and intelligent optimization algorithms can be used, as long as the purpose of solving this optimization model of the steam pipe network can be achieved. This embodiment does not limit the specific solution method.

[0138] Based on the same inventive concept as the above method, as Figure 2 shown, an embodiment of the present invention provides a device for determining a steam pipe network structure, including:

[0139] A data determination module 201, configured to determine road network data and user load data within the area to be set up for the steam pipe network;

[0140] A model construction module 202, configured to construct an optimization model of the steam pipe network according to the road network data and the user load data, where the optimization model of the steam pipe network includes an objective function and constraint conditions;

[0141] A structure determination module 203, configured to determine the structure of the steam pipe network according to the optimization model of the steam pipe network.

[0142] In an embodiment of the present invention, the objective function is as follows:

[0143] minC = C v + C O ;

[0144] where C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost.

[0145] Figure 3It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. At the hardware level, the electronic device includes a processor 301 and a memory 302 storing execution instructions. Optionally, it further includes an internal bus 303 and a network interface 304. Among them, the memory 302 may include a memory 3021, such as a high-speed random access memory (Random-Access Memory, RAM), and may also include a non-volatile memory 3022 (non-volatile memory), such as at least one disk memory, etc.; the processor 301, the network interface 304, and the memory 302 can be interconnected through the internal bus 303, and the internal bus 303 can be an ISA (Industry Standard Architecture, industrial standard architecture) bus, a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or an EISA (Extended Industry Standard Architecture, extended industrial standard structure) bus, etc.; the internal bus 303 can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 3 only a bidirectional arrow is used in the figure, but it does not mean that there is only one bus or one type of bus. Of course, the electronic device may also include other hardware required for other services. When the processor 301 executes the execution instructions stored in the memory 302, the processor 301 executes the method in any one of the embodiments of the present invention and is at least used to execute as Figure 1 the method shown.

[0146] In a possible implementation manner, the processor reads the corresponding execution instructions from the non-volatile memory into the memory and then runs, or can also obtain the corresponding execution instructions from other devices to form a determining device for a steam pipe network structure at the logical level. The processor executes the execution instructions stored in the memory to implement a method for determining a steam pipe network structure provided in any one of the embodiments of the present invention through the executed execution instructions.

[0147] A processor may be an integrated circuit chip with the ability to process signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor or the instructions in the form of software. The above processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0148] The embodiments of the present invention also provide a computer-readable storage medium, including execution instructions. When the processor of the electronic device executes the execution instructions, the processor executes the method provided in any one of the embodiments of the present invention. The electronic device may specifically be the electronic device as Figure 3 shown; the execution instructions are the computer program corresponding to a determining device for a steam pipe network structure.

[0149] Those skilled in the art should understand that the embodiments of the present invention may be provided as a method or a computer program product. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or a combination of software and hardware.

[0150] Each embodiment in the present invention is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0151] It should also be noted that the term "including", "comprising", or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, commodity, or boiler including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, commodity, or boiler. Without further limitations, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, commodity, or boiler including the said element.

[0152] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for determining a steam pipe network structure, characterized in that, Including: Determine the road network data and user load data within the area where the steam pipe network is to be installed; Construct an optimization model for the steam pipe network according to the road network data and the user load data, where the optimization model for the steam pipe network includes an objective function and constraint conditions; Determine the structure of the steam pipe network according to the optimization model for the steam pipe network; The objective function is as follows: minC = C v + C O ; Among them, C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost; The specific formula for the average annual pipe network investment cost is as follows: where d ij represents the pipe diameter level of the connecting pipe ij between road network node i and road network node j, which is an integer variable, and 0 ≤ d ij ≤ MaxDia, where MaxDia is the maximum pipe diameter level; p represents the unit price of the pipe; L represents the pipe life; r represents the residual value rate; arcs represents the set of connectable pipes ij in the road network; D ij represents the length between pipes ij; The specific formula for the pipe loss cost is as follows: Among them, G ij represents the steam flow rate of pipeline ij; λ represents the friction coefficient along the path; ρ represents the fluid density; The constraint conditions include: Pipe section connection and pipe diameter relationship constraints, and the specific formula is as follows: where x ij represents whether pipeline ij is connected, which is an integer variable. 1 indicates connection, and 0 indicates no connection; Energy station capacity constraints, and the specific formula is as follows: Among them, IES_cap_0 represents the maximum steam capacity of the energy station; I0 represents the set of nodes connected to the energy station at node 0; G 0j represents the steam flow rate of the 0j pipeline with the energy station node as the first section; Pipe quantity constraints, and the specific formula is as follows: Wherein, MaxL represents the maximum number of pipes at the energy station outlet; Node pipe inflow quantity constraints, and the specific formula is as follows: Among them, N represents the set of all nodes, including energy station nodes and plot nodes; I j represents the set of nodes connected to node j; Pipe section flow constraints, and the specific formula is as follows: Coupling constraints between pipe section pressure loss and flow rate and pipe diameter, and the specific formula is as follows: Among them, P i represents the pressure at node i; P j represents the pressure at node j; Inflow pipe quantity constraints for plot nodes, and the specific formula is as follows: Among them, B k represents the set of nodes belonging to plot k; Block represents the set of plots; Plot pressure constraints, and the specific formula is as follows: Among them, P k represents the lower limit of the pressure of plot k; Plot flow balance constraints, and the specific formula is as follows: Among them, G k,load represents the load of plot k; Node pressure constraints, and the specific formula is as follows: Routing node flow balance constraints, and the specific formula is as follows: Among them, N net represents the set of routing nodes, excluding the energy station node and the plot node.

2. The method for determining the structure of a steam pipe network according to claim 1, wherein The road network data includes energy station coordinates, road network node coordinates, and plot center point coordinates; The user load data includes user steam parameters, flow rate data, and pressure data.

3. The method for determining the structure of a steam pipe network according to claim 2, wherein The constraint conditions are determined according to the pipe section connection and pipe diameter relationship, energy station capacity, pipe quantity, node pipe inflow quantity, pipe section flow rate, coupling relationship between pipe section pressure loss and flow rate and pipe diameter, inflow pipe quantity for plot nodes, plot pressure, plot flow balance, and node pressure.

4. An apparatus for determining a steam pipe network structure, which is used to execute the method according to any one of claims 1-3, characterized in that, Including: A data determination module for determining the road network data and user load data within the area where the steam pipe network is to be installed; A model construction module for constructing an optimization model for the steam pipe network according to the road network data and the user load data, where the optimization model for the steam pipe network includes an objective function and constraint conditions; A structure determination module for determining the structure of the steam pipe network according to the optimization model for the steam pipe network.

5. The device for determining the structure of a steam pipe network according to claim 4, wherein The objective function is as follows: minC = C v + C O ; Among them, C represents the total planning cost; C v represents the average annual pipe network investment cost; C O represents the pipe loss cost.

6. A readable medium includes execution instructions, and when a processor of an electronic device executes the execution instructions, the electronic device executes the method according to any one of claims 1 to 3.

7. An electronic device includes a processor and a memory storing execution instructions, and when the processor executes the execution instructions stored in the memory, the processor executes the method according to any one of claims 1 to 3.

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