Simplified equivalent method, system, equipment and medium for grid type urban water supply network

Abstract

The invention discloses a simplified equivalent method, system, equipment and medium for a grid-type urban water supply network, and the method comprises the steps: judging the type of the urban water supply network, the type of the urban water supply network comprises a Japanese-shaped water supply network and a field-shaped water supply network; according to the type of the urban water supply network, the urban water supply network is simplified and equivalent to a mouth-shaped water supply network according to the hydraulic equivalence principle, simplified equivalence of the grid-type urban water supply network is completed, and simplified equivalence of a Japanese-shaped water supply network and a field-shaped water supply network can be achieved through the method, the system, the equipment and the medium.

Description

Technical Field

[0001] The invention belongs to the technical field of urban water supply, and relates to a simplified equivalent method, system, equipment and medium for a grid-type urban water supply network. Background Art

[0002] Water supply systems play an important role in modern cities, providing a large amount of pure water to residents, industries and commercial users. However, the complexity of the urban water supply network structure increases the difficulty of water supply network calculation. Therefore, it is of great significance to simplify the urban water supply network equivalently.

[0003] In recent years, the simplification of urban water supply networks mainly includes the simplification of pipelines and ancillary facilities. Depending on the purpose of simplification, the steps, content and results of simplification are not exactly the same. The simplification principles of urban water supply networks mainly include: 1) macro-equivalence principle; 2) small error principle. The main pipeline simplification methods of urban water networks are: 1) delete minor pipelines (such as branch pipes with smaller diameters, water distribution pipes, household pipes, etc.), and retain the main pipelines; 2) when the intersections of pipelines are very close, they can be merged into the same intersection. After merging similar intersections, the number of pipelines can be reduced and the system can be simplified; 3) remove the open valves and cut off the pipelines from the closed valves. Therefore, open and closed valves do not need to appear in the simplified system; 4) parallel pipelines can be simplified into single pipelines, and their diameters are calculated using the hydraulic equivalence principle.

[0004] Although the simplified equivalent method for urban water supply network is relatively mature, the simplified equivalent method for "day" type water supply network and "field" type water supply network is still relatively blank. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a simplified equivalent method, system, equipment and medium for a grid-type urban water supply network. The method, system, equipment and medium can achieve simplified equivalence of a daily water supply network and a field-type water supply network.

[0006] To achieve the above object, the present invention discloses a simplified equivalent method for a grid-type urban water supply network, comprising:

[0007] Determine the type of the urban water supply network, the types of the urban water supply network include day-type water supply network and field-type water supply network;

[0008] According to the type of the urban water supply network and the principle of hydraulic equivalence, the urban water supply network is simplified and equivalent to a mouth-shaped water supply network, thereby completing the simplified equivalence of the grid-type urban water supply network.

[0009] The simplified equivalent method of the grid-type urban water supply network of the present invention is further improved in that:

[0010] Furthermore, the process of determining the type of the urban water supply network is as follows:

[0011] The type of urban water supply network will be determined based on the number of branch pipes in the urban water supply network.

[0012] Furthermore, according to the hydraulic equivalence principle, the day-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0013]

[0014] in, They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network, represents the water demand at node N in the daily water supply network, Ω ABCD represents a set of water demand nodes in a daily water supply network, and node N is located at the center of the daily water supply network.

[0015] Furthermore, according to the hydraulic equivalence principle, the field-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0016]

[0017] in, They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD It represents the set of water demand nodes in the field-type water supply network, and node M is located at the center of the day-type water supply network.

[0018] The present invention discloses a simplified equivalent system of a grid-type urban water supply network, comprising:

[0019] A judgment module, used for judging the type of the urban water supply network, wherein the types of the urban water supply network include a daily water supply network and a field water supply network;

[0020] The equivalent module is used to simplify and equate the urban water supply network into a mouth-shaped water supply network according to the type of the urban water supply network and the principle of hydraulic equivalence, thereby completing the simplified equivalence of the grid-type urban water supply network.

[0021] The simplified equivalent system of the grid-type urban water supply network of the present invention is further improved in that:

[0022] Furthermore, the process of determining the type of the urban water supply network is as follows:

[0023] The type of urban water supply network will be determined based on the number of branch pipes in the urban water supply network.

[0024] Furthermore, according to the hydraulic equivalence principle, the day-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0025]

[0026] in, They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network, represents the water demand at node N in the daily water supply network, Ω ABCD represents a set of water demand nodes in a daily water supply network, and node N is located at the center of the daily water supply network.

[0027] Furthermore, according to the hydraulic equivalence principle, the field-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0028]

[0029] in, They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD It represents the set of water demand nodes in the field-type water supply network, and node M is located at the center of the day-type water supply network.

[0030] The present invention discloses a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the simplified equivalent method of the grid-type urban water supply network are implemented.

[0031] The present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the simplified equivalent method of the grid-type urban water supply network are implemented.

[0032] The present invention has the following beneficial effects:

[0033] The simplified equivalent method, system, equipment and medium of the grid-type urban water supply network described in the present invention, during specific operation, simplifies and equilibrates the urban water supply network into a mouth-type water supply network according to the type of the urban water supply network and the principle of hydraulic equivalence, thereby effectively achieving the simplified equivalence of the urban high-dimensional grid structure water supply network, and providing effective technical support for the simplification of urban day-type water supply networks and field-type water supply networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings constituting 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 an improper limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a simplified equivalent schematic diagram of the Japanese type water supply network in the present invention;

[0036] Figure 2 It is a simplified equivalent schematic diagram of the field-type water supply network in the present invention;

[0037] Figure 3 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0040] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0041] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0042] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0043] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0046] Embodiment 1

[0047] The simplification of urban water supply network is to delete some relatively minor components from the actual pipe network system so that the analysis and calculation can be concentrated on the main objects; the abstraction of urban water supply network is to ignore some specific characteristics of the analysis object, and regard them as elements in the model, only considering their topological relationships and hydraulic characteristics.

[0048] The elements of the urban water supply network model include pipe segments and nodes;

[0049] A pipe segment is a simplified abstract form of pipelines and pump stations, which can transmit water without loss. In other words, there is no flow input or output in the middle of the pipe segment. However, after water flows through the pipe segment, energy changes may occur due to pressurization or friction loss. The flow in the middle of the pipe segment should be converted to the nodes at both ends of the pipe segment using the principle of hydraulic equivalence. Usually, there are multiple abstract pipe segments along the water supply network pipe segment, which are divided by small load nodes, and the small load nodes are divided into two and transferred to the nodes at both ends of the pipe segment respectively, while the drainage network converts the water collected along the pipe segment to the starting node of the pipe segment.

[0050] A node is an abstract form of the intersection, endpoint, or large flow entry and exit point of a pipeline. A node can only transfer energy but cannot change the energy of water. That is, the energy of water at a node is unique. However, a node can have flow input or output, such as the output of water use, the collection of drainage, or the regulation of water volume.

[0051] Based on the above, reference Figure 3 The simplified equivalent method of the grid-type urban water supply network of the present invention comprises the following steps:

[0052] 1) Determine the type of the urban water supply network, where the types of the urban water supply network include a daily water supply network and a field water supply network;

[0053] 2) According to the type of urban water supply network, the urban water supply network is simplified and equivalent to a mouth-shaped water supply network, completing the simplified equivalence of the grid-type urban water supply network.

[0054] When the urban water supply network includes trunk pipelines and branch pipelines, the structure is relatively complex, and there are fewer branch pipelines in the trunk pipeline, then the urban water supply network is a Japanese-type water supply network. Figure 1 To simplify the daily water supply network structure into a mouth-shaped structure, first, the water demand W at node N is N The hydraulic equivalence principle can be used to convert the water demand at the two ends of the pipeline to 0.5W at nodes i and j. N ; Then, the water demand at node i is converted to nodes A and B at both ends of the pipeline using the hydraulic equivalence principle. The node water demand at nodes A and B is 0.25W. N Similarly, the water demand at node j is equivalent to the water demand at nodes C and D, both of which are 0.25W. NThe simplified equivalent topology of the Japanese water supply network is as follows: Figure 1 shown.

[0055] Therefore, the day-type water supply network can be simplified to be equivalent to the mouth-type water supply network, and the formula is:

[0056]

[0057] in, They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network; represents the water demand at node N in the daily water supply network, Ω ABCD Represents the set of water demand nodes in a daily water supply network.

[0058] When there are many branch pipelines in the trunk network, the water supply network is a field-type water supply network. The outer circle represents the trunk pipeline, and the cross in the middle represents the branch pipeline. Figure 2 As shown in the figure, in order to simplify the field water supply network structure into a mouth-shaped water supply network, first, the water demand W at node N is N Using the hydraulic equivalence principle, the water demand at nodes i and j of the nearest main pipeline is equivalent to 0.5W. N Then, the hydraulic equivalence principle is used to convert the water demand at nodes i and j to the nodes at both ends of the corresponding pipeline, such as Figure 2 As shown, the water demands equivalent to nodes A, B and D are:

[0059]

[0060] Similarly, the water demand W at node M is M Using the hydraulic equivalence principle, the water demand at nodes v and k of the nearest main pipeline is equivalent to 0.5W. N ; Then, the hydraulic equivalence principle is used to convert the water demand at nodes v and k to the nodes at both ends of the pipeline. The water demand equivalent to nodes A, C and D are:

[0061]

[0062] Because nodes N and M are located in the same field-type water supply network and are closely adjacent to each other, it can be approximately considered that the water demand at nodes N and M is equal, that is, W N ≈W M The simplified equivalent topology of the field-type water supply network is as follows: Figure 2 As shown in b, the water demands at nodes A, B, C, and D after simplification and equivalence are:

[0063]

[0064] It can be seen that the field-type water supply network can be simplified to be equivalent to the mouth-type water supply network, and the formula is:

[0065]

[0066] in, They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD Represents the set of water demand nodes in a field-type water supply network.

[0067] In summary, both the day-type water supply network and the field-type water supply network can be simplified to be equivalent to the mouth-type water supply network, and the simplified equivalent method is similar, and the expression is:

[0068]

[0069] in, They represent the equivalent water demand in the daily water supply network or field water supply network to the equivalent water demand of nodes A, B, C, and D respectively; represents the water demand at node i in the daily water supply network or field water supply network; Ω ABCD Represents the set of water demand nodes in a day-type water supply network or a field-type water supply network.

[0070] Embodiment 2

[0071] The simplified equivalent system of the grid-type urban water supply network of the present invention comprises:

[0072] A judgment module, used for judging the type of the urban water supply network, wherein the types of the urban water supply network include a daily type water supply network and a field type water supply network;

[0073] The equivalent module is used to simplify and equate the urban water supply network into a mouth-shaped water supply network according to the type of the urban water supply network and the principle of hydraulic equivalence, thereby completing the simplified equivalence of the grid-type urban water supply network.

[0074] The simplified equivalent system of the grid-type urban water supply network of the present invention is further improved in that:

[0075] Furthermore, the process of determining the type of the urban water supply network is as follows:

[0076] The type of urban water supply network will be determined based on the number of branch pipes in the urban water supply network.

[0077] Furthermore, according to the hydraulic equivalence principle, the day-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0078]

[0079] in, They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network, represents the water demand at node N in the daily water supply network, Ω ABCD represents a set of water demand nodes in a daily water supply network, and node N is located at the center of the daily water supply network.

[0080] Furthermore, according to the hydraulic equivalence principle, the field-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is:

[0081]

[0082] in, They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD It represents the set of water demand nodes in the field-type water supply network, and node M is located at the center of the day-type water supply network.

[0083] The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0084] Embodiment 3

[0085] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of implementing the simplified equivalent method of the grid-type urban water supply network include: determining the type of the urban water supply network, the types of the urban water supply network include day-type water supply network and field-type water supply network; according to the type of the urban water supply network, according to the hydraulic equivalence principle, simplifying and equivalent the urban water supply network to a mouth-type water supply network, and completing the simplified equivalent of the grid-type urban water supply network. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus, and the internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0086] Embodiment 4

[0087] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of implementing the simplified equivalent method of the grid-type urban water supply network, for example, include: judging the type of the urban water supply network, the types of the urban water supply network include a day-type water supply network and a field-type water supply network; according to the type of the urban water supply network, according to the hydraulic equivalence principle, simplifying and equivalent the urban water supply network to a mouth-type water supply network, and completing the simplified equivalence of the grid-type urban water supply network. Specifically, the computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. The volatile memory may include a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include a read-only memory (ROM), a hard disk, a flash memory, an optical disk, a magnetic disk, etc.

[0088] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0089] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0092] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0093] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0094] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A simplified equivalent method for a grid-type urban water supply network, characterized in that: include: Determine the type of the urban water supply network, the types of the urban water supply network include day-type water supply network and field-type water supply network; According to the type of the urban water supply network and the principle of hydraulic equivalence, the urban water supply network is simplified and equivalent to a mouth-shaped water supply network, thereby completing the simplified equivalence of the grid-type urban water supply network.

2. The simplified equivalent method of the grid-type urban water supply network according to claim 1, characterized in that: The process of determining the type of urban water supply network is as follows: The type of urban water supply network will be determined based on the number of branch pipes in the urban water supply network.

3. The simplified equivalent method of the grid-type urban water supply network according to claim 1, characterized in that: According to the hydraulic equivalence principle, the day-type water supply network is simplified and equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is: in, and They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network, represents the water demand at node N in the daily water supply network, Ω ABCD represents a set of water demand nodes in a daily water supply network, and node N is located at the center of the daily water supply network.

4. The simplified equivalent method of the grid-type urban water supply network according to claim 1, characterized in that: According to the hydraulic equivalence principle, the field-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is: in, and They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD It represents the set of water demand nodes in the field-type water supply network, and node M is located at the center of the day-type water supply network.

5. A simplified equivalent system of a grid-type urban water supply network, characterized in that: include: A judgment module, used for judging the type of the urban water supply network, wherein the types of the urban water supply network include a daily water supply network and a field water supply network; The equivalent module is used to simplify and equate the urban water supply network into a mouth-shaped water supply network according to the type of the urban water supply network and the principle of hydraulic equivalence, thereby completing the simplified equivalence of the grid-type urban water supply network.

6. The simplified equivalent system of the grid-type urban water supply network according to claim 5, characterized in that: The process of determining the type of urban water supply network is as follows: The type of urban water supply network will be determined based on the number of branch pipes in the urban water supply network.

7. The simplified equivalent system of the grid-type urban water supply network according to claim 5, characterized in that: According to the hydraulic equivalence principle, the day-type water supply network is simplified and equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is: in, and They represent the equivalent water demand of nodes A, B, C, and D in the day-type water supply network, represents the water demand at node N in the daily water supply network, Ω ABCD represents a set of water demand nodes in a daily water supply network, and node N is located at the center of the daily water supply network.

8. The simplified equivalent system of the grid-type urban water supply network according to claim 5, characterized in that: According to the hydraulic equivalence principle, the field-type water supply network is simplified to be equivalent to a mouth-type water supply network, wherein the equivalent water demand at the four nodes A, B, C, and D in the mouth-type water supply network is: in, and They represent the equivalent water demand of nodes A, B, C, and D in the field-type water supply network; represents the water demand at node M in the field-type water supply network, Ω ABCD It represents the set of water demand nodes in the field-type water supply network, and node M is located at the center of the day-type water supply network.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the simplified equivalent method of the grid-type urban water supply network according to any one of claims 1 to 4 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the simplified equivalent method of the grid-type urban water supply network according to any one of claims 1 to 4 are implemented.

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