A simulation operation method and system for a city water supply network in a tidal river network area

Abstract

The application provides a simulation operation method and system for a city water supply network in a tidal river network area, relates to the technical field of water resource allocation, and obtains a water supply project and a water demand project of a target area; based on the water supply project and the water demand project, a water supply network topology graph of the target area is constructed; based on the water supply network topology graph and a pipeline priority order, a water supply path sequence of the target area is generated; and based on the water supply path sequence and a preset constraint condition, simulation operation of the water supply system is carried out to evaluate a water shortage risk of the target area, so that the loss of salt tide disasters is reduced, the sustainable development of regional economy and society is maintained, and the health of an estuary ecological environment is ensured.

Description

Technical Field

[0001] This invention relates to the field of water resource allocation technology, and more specifically, to a simulation operation method and system for an urban water supply network in a tidal river network area. Background Technology

[0002] With the development of water conservancy technology and urban water supply systems, the efficient and rapid simulation operation of urban raw water supply systems in tidal river network areas is crucial for assessing urban water shortage risks and responding to the impact of saltwater intrusion on urban and rural water supply.

[0003] Existing water supply system simulation technologies mainly focus on water balance, simulating water supply according to specific rules and water intake sequences. However, for the complex many-to-many relationships formed between multiple water sources and multiple users, existing technologies struggle to effectively handle the numerous water supply paths, making it difficult to determine the water supply sequence and failing to meet the needs of high-precision water supply simulation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a simulation operation method and system for urban water supply networks in tidal river network areas, so as to improve the accuracy and adaptability of water supply system simulation.

[0005] Firstly, this application provides a method for simulating the operation of an urban water supply network in a tidal river network area, including: Acquire information on water supply and water demand projects in the target area; Based on water supply projects and water demand projects, a water supply network topology map of the target area is constructed. The water supply network topology map includes water supply projects and water demand projects as nodes and directed edges between each node, and each directed edge has a preset pipeline priority order. Based on the water supply network topology and pipeline priority, a water supply path sequence for the target area is generated. Based on the water supply path sequence and preset constraints, the water supply system is simulated to assess the water shortage risk in the target area; the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

[0006] Optionally, the pipeline priority order includes the priority order of water supply pipelines and the priority order of water demand pipelines; The priority order of water supply pipelines is the order in which water supply pipelines are laid down from the current water supply project to downstream water supply projects or water demand projects; the priority order of water demand pipelines is the order in which water demand pipelines are laid up from the water demand project to upstream water supply projects.

[0007] Optionally, a water supply path sequence for the target area is generated, including: Based on the priority of water supply projects, water supply pipelines, and water demand projects, a water supply order sequence is generated. Based on the priority order of water demand projects, water demand pipelines, and water supply projects, a water demand sequence is generated. Based on the water supply sequence and the water demand sequence, the water supply path sequence for the target area is obtained by processing according to preset rules. The preset rules are to generate the water supply path sequence by iterative filtering according to the order of water demand paths in the water demand sequence and the priority order of water supply pipelines of each water supply project, so that the downstream water supply path of any water supply project is selected in sequence according to the priority order of water supply pipelines of the water supply project.

[0008] Optionally, generating the water supply path sequence for the target area further includes: Based on the priority order of water supply projects, water supply pipelines and water demand projects, a depth-first traversal algorithm is used to generate all water conveyance paths from water supply projects to water demand projects, and a water supply order sequence is obtained. Based on the priority order of water demand projects, water demand pipelines, and water supply projects, a depth-first traversal algorithm is used to generate all water conveyance paths from water demand projects to water supply projects, thus obtaining a water demand order sequence.

[0009] Optionally, the pumping station constraints include: chlorine content constraints at the water intake and water intake capacity constraints at the pumping station; The chlorine content constraint at the water intake is that if the real-time chlorine content at the pumping station's water intake is not less than a preset threshold, then the pumping station's water intake is determined to be zero; if the real-time chlorine content at the pumping station's water intake is less than the preset threshold, then the pumping station's water intake is determined to be the minimum value of the river's inflow. The water intake capacity constraint of a pumping station is that the total water supply of the pumping station per unit time shall not exceed the designed water intake of the pumping station.

[0010] Optionally, reservoir constraints include water balance constraints and water level constraints; The water balance constraint is that the change in reservoir storage is equal to the inflow minus the total water supply, outflow, and evaporation. Water level constraints mean that the reservoir's operating water level is not lower than the dead water level and not higher than the flood control limit water level or the normal storage water level.

[0011] Optionally, the pipeline constraint is a water delivery capacity constraint, wherein the actual water supply from any water source node to any water demand node does not exceed the maximum water delivery capacity of the pipeline and is not less than the minimum water delivery capacity of the pipeline.

[0012] Optionally, after the simulation runs, the following may also be included: Obtain the water replenishment, pumping, and supply volumes for each water supply project; A water shortage risk assessment is conducted based on the water replenishment volume, pumping volume, and water supply volume to obtain the risk assessment results of the water supply network.

[0013] Secondly, this application provides a simulation operation device for an urban water supply network in a tidal river network area, comprising: The data acquisition module is used to acquire information on water supply and demand projects in the target area. The topology graph construction module is used to construct a water supply network topology graph of a target area based on water supply projects and water demand projects. The water supply network topology graph includes water supply projects and water demand projects as nodes and directed edges between each node, and each directed edge has a preset pipeline priority order. The path generation module is used to generate a sequence of water supply paths for a target area based on the water supply network topology and pipeline priority. The simulation operation module is used to simulate the operation of the water supply system based on the water supply path sequence and preset constraints in order to assess the water shortage risk in the target area; the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

[0014] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-mentioned simulation operation method of the urban water supply network in the tidal river network area.

[0015] This invention provides a method and system for simulating the operation of an urban water supply network in a tidal river network area. The method involves: acquiring water supply and demand engineering projects in the target area; constructing a water supply network topology map of the target area based on these projects; generating a water supply path sequence for the target area based on the water supply network topology map and pipeline priority; and simulating the operation of the water supply system based on the water supply path sequence and preset constraints. This aims to reduce losses from saltwater intrusion, maintain the sustainable development of the regional economy and society, and simultaneously protect the health of the estuary's ecological environment.

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart illustrating a simulation operation method for an urban water supply network in a tidal river network area, provided by an embodiment of the present invention, is shown. Figure 2 A schematic diagram of the water supply network topology provided in an embodiment of the present invention is shown; Figure 3A schematic diagram of the simulated operation water level process of Reservoir E1 provided in an embodiment of the present invention is shown; Figure 4 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under Scheme 1, provided by an embodiment of the present invention, is shown. Figure 5 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under scheme 2, provided by an embodiment of the present invention, is shown. Figure 6 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under scheme 3, provided in an embodiment of the present invention, is shown. Figure 7 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under scheme 4 provided in an embodiment of the present invention is shown; Figure 8 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under scheme 5, provided by an embodiment of the present invention, is shown. Figure 9 A schematic diagram illustrating the power consumption process of simulated operation of four pumping stations under scheme 6 provided in an embodiment of the present invention is shown; Figure 10 A schematic diagram of the structure of a simulation operation device for an urban water supply network in a tidal river network area provided in an embodiment of the present invention is shown. Figure 11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present invention is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] This application provides a method for simulating the operation of an urban water supply network in a tidal river network area. (See attached document.) Figure 1 As shown in the embodiments of this application, the simulation operation method of the urban water supply network in the tidal river network area includes at least the following steps: Step 110: Obtain the water supply and water demand projects for the target area.

[0021] In this embodiment of the application, the water supply project includes infrastructure such as a water source reservoir and a water intake pumping station for providing raw water; the water demand project includes target units such as water plants and water-using areas that need to receive water supply.

[0022] Specifically, the water supply and demand projects for the target area can be obtained through the following methods: First, obtain existing project records and Geographic Information System (GIS) data from the water resources management administrative department or legally authorized water supply enterprise in the target area. The project records should at least include the project name and type; the GIS data should at least include the spatial coordinates of the project. Secondly, for engineering entities lacking any of the following: project name, type, or spatial coordinates, the archived design data for that project is retrieved first. If the archived data is missing, a field survey is conducted. The supplementary information is then standardized according to the coordinate system and attribute field structure of the aforementioned GIS data to obtain the engineering attribute data for each engineering entity. A globally unique identifier (ID) is assigned to each confirmed engineering entity, and this identifier, along with the standardized attribute data, is stored in the basic dataset. The engineering attribute data must include at least: spatial location and quantitative indicators reflecting the project's water supply / demand capacity. For water supply projects, at least the total reservoir capacity (unit: cubic meters) or the pumping station's installed flow rate (unit: cubic meters / second) must be recorded. For water demand projects, at least the water plant's design treatment capacity (unit: cubic meters / day) or the water demand quota for the water-using area (unit: cubic meters / day) must be recorded. All engineering attribute data refer to the maximum water supply or demand achievable under standard operating conditions.

[0023] Through the above process, a node information list containing all identified engineering entities is established. The node information list clarifies the unique identifier, standardized spatial location, and quantified attribute parameters of each node, which serves as the node information basis for constructing the water supply network topology map in subsequent steps, thereby reducing simulation calculation deviations caused by omissions of engineering entities or non-standard attribute data.

[0024] Step 120: Based on the water supply project and the water demand project, construct a water supply network topology map of the target area; the water supply network topology map includes water supply projects and water demand projects as nodes and directed edges between each node, and each directed edge has a preset pipeline priority order.

[0025] Furthermore, the pipeline priority order includes the priority order of water supply pipelines and the priority order of water demand pipelines; the priority order of water supply pipelines is the order of water supply pipelines from the current water supply project to downstream water supply projects or water demand projects; the priority order of water demand pipelines is the order of water demand pipelines from the water demand project to upstream water supply projects.

[0026] In this embodiment of the application, the specific process of constructing the water supply network topology map of the target area based on water supply projects and water demand projects is as follows: First, each water supply project is treated as a water source node, and each water demand project is treated as a water demand node. Then, based on the actual connections of water supply pipelines, channels, or natural waterways in the target area, a directed edge is established between two nodes with a water flow relationship. The direction of the directed edge is from the water supply node to the water demand node. If there are multiple actual pipelines between two nodes, multiple directed edges are established accordingly, and each directed edge is recorded independently. Finally, after establishing all nodes and directed edges, pipeline priority is configured for each node. For water supply project nodes, the water supply pipeline priority is assigned according to the actual scheduling importance or engineering design order of each directed edge downstream of the node; the smaller the priority value, the higher the priority of the downstream pipeline in water supply. For water demand project nodes, the water demand pipeline priority is assigned according to the actual water intake preference or engineering connection order of each directed edge upstream of the node; the smaller the priority value, the higher the priority of the upstream pipeline in meeting the needs of the water demand node. For intermediate nodes that are neither purely water supply nor purely water demand projects, such as transfer pumping stations or regulating reservoirs, both downstream water supply pipeline priority and upstream water demand pipeline priority are configured. After completing the above configuration, all nodes, directed edges, and pipeline priority data for each node are stored as a water supply network topology graph.

[0027] like Figure 2 As shown, the structure of the water supply network topology is assumed to consist of n nodes V and m edges E, represented as G=(V,E). V represents water engineering nodes, such as reservoirs, pumping stations, and water-using units. Each node v has attributes such as beneficial storage capacity, pumping capacity, and coordinates. E represents directed edges, which can be divided into natural rivers, artificial channels, pipelines, etc. Each directed edge e has attributes such as start point, end point, length, water conveyance capacity, input order, and output order.

[0028] Through the above-described construction process, the water supply facilities and connections in the actual physical system are transformed into a structured graph model. The selection order of each node under multiple connection paths is clearly defined, making the originally complex and chaotic multi-water-source and multi-user network orderly and controllable. This provides a clear and unambiguous graph structure foundation for the subsequent automatic generation of water supply path sequences, avoiding simulation logic errors caused by path intersections and unclear priorities, thereby improving the reliability and execution efficiency of the entire simulation operation method.

[0029] Step 130: Based on the water supply network topology and pipeline priority, generate the water supply path sequence for the target area.

[0030] In this embodiment, a water supply sequence is generated based on the priority of water supply projects, water supply pipelines, and water demand projects; a water demand sequence is generated based on the priority of water demand projects, water demand pipelines, and water supply projects; and the water supply sequence and water demand sequence are processed according to preset rules to obtain a water supply path sequence for the target area. The preset rules are to generate the water supply path sequence by using an iterative filtering method according to the order of water demand paths in the water demand sequence and the priority of water supply pipelines of each water supply project, so that the downstream water supply path of any water supply project is selected sequentially according to the priority of water supply pipelines of the water supply projects.

[0031] Furthermore, based on the priority order of water supply projects, water supply pipelines, and water demand projects, a depth-first traversal algorithm is used to generate all water transmission paths from water supply projects to water demand projects, resulting in a water supply order sequence; based on the priority order of water demand projects, water demand pipelines, and water supply projects, a depth-first traversal algorithm is used to generate all water transmission paths from water demand projects to water supply projects, resulting in a water demand order sequence.

[0032] In this embodiment, based on water supply projects, water supply pipeline priority, and water demand projects, a depth-first traversal algorithm is used to generate all water supply paths from water supply projects to water demand projects. The specific process for obtaining the water supply order sequence is as follows: Taking each water supply project node as the starting point, according to the preset water supply pipeline priority of that node, the nodes connected by its downstream directed edges are selected sequentially. After reaching each downstream node, if the node is a water demand project node, the complete sequence of nodes traversed from the starting water supply project to the water demand project is recorded as a water supply path; if the node is an intermediate node (e.g., a pumping station or reservoir), the search continues downstream according to the water supply pipeline priority of the intermediate node, repeating the above process until the water demand project node is reached or there are no downstream nodes to traverse; by traversing all water supply project nodes and searching according to their respective water supply pipeline priority, all water supply paths from each water supply project to each water demand project are obtained. These paths are arranged in the order of generation to obtain the water supply order sequence (i.e., the set of water supply paths).

[0033] In this embodiment of the application, the specific algorithm for obtaining the water supply sequence is as follows: Step 1311: Initialize the water supply path set Path counter ; Step 1312: Traverse each water source node (i=1,2,3,…n); Initialize the stack or recursive structure, and set the current path... Current node Call the depth-first search subprocess ;in, Defined as: for a node Each downstream node ,according to The water supply pipelines are processed in order of priority; if If it does not exist, return; set the current path. ;like If it is a water-demanding node, then... join in Path counter ;otherwise( (It is an intermediate node), recursive call Automatic backtracking continues processing. The next downstream node; Step 1313: Output .

[0034] In this embodiment, based on the water demand project, the priority order of water demand pipelines, and the water supply project, a depth-first traversal algorithm is used to generate all water conveyance paths from the water demand project to the water supply project, resulting in the water demand order sequence. The specific process is as follows: Taking each water demand project node as the endpoint, the nodes connected to its upstream directed edges are traced backward according to the preset priority order of the water demand pipelines of that node. After reaching each upstream node, if the node is a water supply project node, the complete sequence of nodes traversed from the water supply project to the starting water demand project is recorded as a water demand path; if the node is an intermediate node, the search continues upstream according to the priority order of the water demand pipelines of the intermediate node, repeating the above process until the water supply project node is reached or there are no upstream nodes to traverse; by traversing all water demand project nodes and performing a reverse search according to their respective priority order of water demand pipelines, all water demand paths from each water supply project to each water demand project are obtained. These paths are arranged in the order of generation to obtain the water demand order sequence (i.e., the set of water demand paths).

[0035] In this embodiment of the application, the specific algorithm for obtaining the water supply sequence is as follows: Step 1321: Initialize the set of water demand paths Path counter ; Step 1322: Traverse each water-required node (i=1,2,3,…n); Let the current path Current node Call the recursive sub-procedure ;in, Defined as: for a node Each upstream node ,according to The water supply pipelines will be processed in order of priority; if If it does not exist, return; let the current path... ;like If it is a water source node, then... join in Path counter Otherwise, recursive call. ; Step 1323: Output .

[0036] In this embodiment, the specific process of obtaining the water supply path sequence for the target area based on the water supply order sequence and the water demand order sequence, according to preset rules, is as follows: Each water demand path is processed one by one according to the path order in the water demand order sequence. For the current water demand path, it is checked whether each water supply engineering node involved in the current water demand path has completed the selection of downstream paths according to the priority order of its water supply pipeline. Only when the number of downstream paths currently selected by each water supply engineering node in the current water demand path meets the priority order requirement of the node can the water demand path be selected into the final water supply path sequence. Through repeated iterations, until all water demand paths that meet the order constraints are filtered out, the final water supply path sequence (i.e., the water supply path set) is formed. In determining the water supply path sequence for the target area, the water demand priority sequence reflects the order in which users prioritize selecting upstream water sources, while the water supply pipeline priority sequence ensures the order in which water sources supply water downstream according to their own scheduling logic. The combination of the water demand priority sequence and the water supply priority sequence ensures that the generated water supply path sequence satisfies both the priority requirements of the water demand side and the outflow order constraints of the water supply side, thus truly reflecting the bidirectional scheduling decision logic in a complex water supply network.

[0037] In this embodiment of the application, the specific algorithm for obtaining the water supply path sequence of the target area is as follows: Step 1331: Initialize the water supply path set For each water supply node Maintain the selected path count Let the traversal index ; Step 1332: Let From the sequence of water demand Get the first Water demand path ; Step 1333: If R exists If the water requirement is met, proceed to step 1335; otherwise, obtain the required water path. water supply nodes Water supply routes exist relative to water supply nodes Water transfer sequence (i.e., from) Of all the water supply routes that originate from, The corresponding output sequence number, starting from 1; Step 1334: Determine if the condition is met. If satisfied, then join in and order If not satisfied, proceed to step 1335. Step 1335: If ( If the total number of paths is zero, then proceed to step 1332; otherwise, proceed to step 1336. Step 1336: Determine Is it equal to ;like Then let And execute step 1332 to start a new round of traversal; if Then output the water supply sequence. As the final water supply path sequence.

[0038] Using the above method, an ordered and consistent water supply path sequence can be automatically obtained without manual enumeration and sorting, providing a clear and executable path execution order for subsequent simulation operations, which significantly improves the automation level and logical consistency of the simulation.

[0039] Step 140: Based on the water supply path sequence and preset constraints, simulate the operation of the water supply system to assess the water shortage risk in the target area; wherein, the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

[0040] In this embodiment, the pump station constraints include: intake chlorine content constraints and pump station water intake capacity constraints. The intake chlorine content constraint determines that when the real-time chlorine content at the pump station intake is not less than a preset threshold, the pump station's water intake capacity is zero; when the real-time chlorine content at the pump station intake is less than the preset threshold, the pump station's water intake capacity is determined to be the minimum river inflow, i.e.:

[0041] In the formula, For the first A pumping station The amount of water available at any given time. For the first The water intake capacity of each pumping station For the water intake at all times Traffic; The water intake capacity constraint of a pumping station is that the total water supply of the pumping station per unit time shall not exceed the design water intake of the pumping station, that is:

[0042] In the formula, For the first A pumping station Total water supply at any given time For the first The pumping station is supplying the first The water supply at each water demand end.

[0043] Reservoir constraints include water balance constraints and water level constraints; among them, the water balance constraint is that the change in reservoir storage is equal to the inflow minus the total water supply, outflow, and evaporation, i.e.:

[0044] In the formula, For the first The reservoir is The amount of water stored at any given time. For the first The reservoir is The amount of water stored at any given time. For the first The reservoir is The amount of water entering the reservoir at any given time. For the first The reservoir is Total water supply at any given time For the first The reservoir is The amount of water constantly being discharged into the downstream river channel For the first The reservoir is The amount of water evaporated at any given time; Water level constraints mean that the reservoir's operating water level is not lower than the dead water level and not higher than the flood control limit water level or the normal storage water level, that is:

[0045] In the formula, For the first The reservoir is The lowest operating water level at any given time is generally the dead water level. For the first The reservoir is The water level at any given time For the first The reservoir is The highest operating water level at any given time is generally the flood limit water level during the flood season, and the normal storage water level at other times.

[0046] The pipeline constraint is a water delivery capacity constraint: the actual water supply from any water source node to any water demand node shall not exceed the pipeline's maximum water delivery capacity, nor be less than the pipeline's minimum water delivery capacity, that is:

[0047] In the formula, For the first The water source ends at the first The water supply at each water demand end For the first The water source ends at the first The minimum water delivery capacity of the pipeline at each water demand end.

[0048] In this embodiment, the specific process of simulating the operation of the water supply system based on the water supply path sequence and preset constraints is as follows: Water allocation is performed sequentially for each water supply path according to its order. For the currently processed water supply path, starting from the water supply engineering node at the path's starting point, water transmission simulation is performed downstream along the directed edges of the path towards the downstream water demand engineering nodes. During the simulation, at each pumping station node, the chlorine content constraint at the intake is used to determine whether the pumping station can draw water and the upper limit of the drawable water volume. Then, the total outflow of the pumping station is limited based on the pumping station's water intake capacity constraint. At each reservoir node, the water storage and water level after water supply are checked for safety based on water balance and water level constraints. If the water level is about to fall below the dead water level, the water supply for that path is reduced or stopped. At each pipeline segment, the actual water delivery volume of that segment is limited based on the pipeline's water delivery capacity constraint. Once all nodes and edges along the entire path satisfy all constraints, the water supply for that path is allocated to the corresponding water-demanding project nodes, and the cumulative water supply of the relevant pumping stations, the water storage of the reservoirs, and the cumulative water transmission of the pipelines are updated. If a path cannot meet the full water demand of a water-demanding project due to any constraint, the maximum water volume allowed by the constraint is allocated, and the shortfall is supplemented by subsequent water supply paths. After processing all paths in the water supply path sequence, the simulation operation of the water supply system for the current time period is completed.

[0049] In this way, the unique saline tide effect of the tidal river network area (constrained by the chlorine content of the water intake), the engineering capacity limitations of pumping stations and reservoirs, and the limitations of pipeline transportation capacity are fully considered in the simulation process, making the simulation results closer to the actual system operation status and providing accurate basic data for subsequent water shortage risk assessment.

[0050] In one optional embodiment, after the simulation is completed, the method further includes: obtaining the water replenishment, pumping and supply volumes of each water supply project; and conducting a water shortage risk assessment based on the water replenishment, pumping and supply volumes to obtain the risk assessment results of the water supply network.

[0051] In this embodiment, after completing the time-by-time water supply simulation for the entire simulation period (e.g., a dry season or a complete hydrological year) according to the water supply path sequence and various constraints, the cumulative operational data of each water supply project during the entire simulation process is recorded. For reservoir-type water supply projects, their replenishment volume is obtained, which refers to the amount of water received by the reservoir from upstream rivers or other water sources; their supply volume is also obtained, which refers to the total amount of water transported by the reservoir to downstream water plants or water-using areas. For pumping station-type water supply projects, their pumping volume is obtained, which refers to the total amount of raw water pumped by the pumping station from rivers or reservoirs; their supply volume is also obtained, which refers to the total amount of water transported by the pumping station to subsequent reservoirs or water plants. For water-demanding projects such as various water plants, their actual received water supply volume is obtained.

[0052] Based on the obtained water replenishment, pumping, and supply data, a water shortage risk assessment is conducted. This assessment includes: hourly comparison of the actual water supply of each water-demanding project with its demand for that period to calculate the water shortage amount and duration. A larger water shortage and a longer duration indicate a higher water shortage risk level. Simultaneously, the actual water replenishment of reservoirs is compared with planned or historical average replenishment. Reservoirs with insufficient replenishment may experience reduced water supply capacity in subsequent periods, increasing system risk. The actual pumping volume of pumping stations is compared with their designed pumping capacity. If a pumping station operates close to or beyond its design capacity for an extended period, there is a risk of equipment overload or water intake failure. If the actual pumping volume is significantly lower than the design capacity due to excessively high chlorine levels at the water intake, it indicates severe salinity affecting the system.

[0053] By comprehensively analyzing multiple dimensions, such as the degree of water shortage, insufficient reservoir storage, and obstruction of pumping station water intake, and quantifying these factors according to preset weights, a comprehensive risk assessment of the water supply system is obtained. This assessment result can be categorized into different levels, such as low risk, medium risk, and high risk. This risk assessment process transforms the engineering operation data generated from simulation into intuitive risk information, enabling rapid identification of weak links and risk periods in the water supply system. This provides quantitative decision-making basis for developing optimized scheduling plans, emergency water replenishment strategies, and engineering renovation plans, thereby fully leveraging the guiding role of simulation operation methods in ensuring actual water supply security.

[0054] In this embodiment, the raw water supply system of Area A is taken as an example. Based on the current water supply system and planned water supply projects in Area A, it can be divided into two parts: the East Zone and the West Zone. The urban and rural water supply is mainly calculated with water plants as nodes. The East Zone includes seven sub-areas: B1, B2, B3, B4, B5, B6, and B7; the West Zone includes four sub-areas: C1, C2, C3, and C4; the water supply reservoirs include E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, and E12; the water plants include D1, D2, D3, D4, D5, D6, D7, D8, and D9; and the pumping stations include F1, F2, F3, and F4. The scope of the water supply system model is shown in Table 1.

[0055] Table 1. Scope of Water Supply System Model

[0056] Furthermore, using the measured saltwater intrusion process from 2022 to 2023 as a typical process for water resource simulation, the simulation schemes for different periods were first proposed: Option 1: During the drawdown period, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will continue to draw water to meet the water supply needs of water plant D9, while units 4 to 9 of pumping station F2 will be shut down; pumping station F3 will continue to draw water to meet the water demand of H1; if the water supply from the pumping stations is insufficient, water will be supplemented from reservoir E1; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, while units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water demand of H1. Water demand: Reservoir E1 releases its basic flow, ensuring the water level does not exceed the flood control limit. During the storage period, pumping station F2 will replenish the reservoir separately, with units 1 to 3 of pumping station drawing water normally to meet the water supply needs of water plant D9. Units 4 to 9 of pumping station F2 will replenish reservoir E1. Pumping station F1 will not actively replenish the reservoir. During the dry season, the principle of supplying water first and then reducing it will be followed. Initially, the pumping station will supply water, retaining as much reservoir water as possible. Under the premise of meeting the water quality standards for water leaving the plant, the reservoir water will be fully utilized, and some river water with slightly excessive salinity will be reasonably mixed to supply the water plant. In the later stages of water supply, the reservoir water supply will be gradually increased based on the inflow forecast.

[0057] Option 2: During the drawdown period, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will continue to draw water to meet the water supply needs of water plant D9, while units 4 to 9 of pumping station F2 will be shut down; pumping station F3 will continue to draw water to meet the water demand of H1; if the water supply from the pumping stations is insufficient, water will be supplemented from reservoir E1; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, while units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water supply needs of H1. H1 water demand; E1 reservoir releases basic flow, with water level not exceeding the flood limit level; during the water storage period, pumping stations F1 and F2 simultaneously replenish the reservoir, with units 1 to 3 of pumping station F2 meeting the water supply needs of water plant D9; units 4 to 9 of pumping stations F1 and F2 simultaneously replenish reservoir E1; during the dry season, water supply will be initially supplied by pumping stations, retaining as much reservoir water as possible, and fully utilizing reservoir water while ensuring the quality of treated water meets standards, with some river water with slightly excessive salinity added for water plant production; in the later stages of water supply, the reservoir water supply will be gradually increased based on inflow forecasts.

[0058] Option 3: During the drawdown period, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will continue to draw water to meet the water supply needs of water plant D9, while units 4 to 9 of pumping station F2 will be shut down; pumping station F3 will continue to draw water to meet the water demand of H1; if the water supply from the pumping stations is insufficient, water will be supplemented from reservoir E1; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, while units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water demand of H1; reservoir E1 will release the basic flow rate, with the water level not exceeding the flood limit level; during the water storage period, F1 will continue to draw water to meet the water demand of H1. The phased replenishment plan for pumping stations F1 and F2 is as follows: Units 1 to 3 of pumping station F2 will supply water to water plant D9; when the water level of reservoir E1 is below 44m and the predicted desalination rate of F2 is greater than 90%, units 4 to 9 of pumping station F2 will replenish reservoir E1; when the water level of reservoir E1 is above 44m or the predicted desalination rate of F2 is less than 90%, pumping stations F1 and F2 will replenish reservoir E1 simultaneously; during the dry season, the principle of supplying water first and then reducing it will be followed. In the initial stage of water supply, the pumping stations will supply water first, and reservoir water will be retained as much as possible. Under the premise of meeting the water quality standards of the treated water, the reservoir water will be fully utilized, and some river water with slightly excessive salinity will be reasonably mixed to supply the water plant for production; in the later stage of water supply, the reservoir water supply will be gradually increased according to the inflow forecast.

[0059] Option 4: During the drawdown period, pumping station F1 will be shut down; units 4 to 9 of pumping station F2 will be shut down; when reservoir E1 has sufficient water, it will actively supply water to H2; units 1 to 3 of pumping station F2 will operate partially to supply water to water plant D9, and units 4 to 9 of pumping station F3 will operate partially to supply water to H3; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, and units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water demand of H1. The basic flow rate of Reservoir E1 will be released, and the water level will not exceed the flood control limit. During the water storage period, Pump Station F2 will have a separate water replenishment plan. Units 1 to 3 of Pump Station F2 will draw water normally to meet the water supply needs of Water Plant D9. Units 4 to 9 of Pump Station F2 will replenish Reservoir E1. Pump Station F1 will not actively replenish the reservoir. During the dry season, the principle of supplying water first and then reducing it will be followed. In the initial stage of water supply, the pump stations will supply water first, and the reservoir water will be retained as much as possible. Under the premise of meeting the water quality standards for the water leaving the plant, the reservoir water will be fully utilized, and some river water with slightly excessive salinity will be reasonably mixed to supply the water plant. In the later stage of water supply, the water supply from the reservoir will be gradually increased according to the water inflow forecast.

[0060] Option 5: During the drawdown period, pumping station F1 will be shut down; units 4 to 9 of pumping station F2 will be shut down; when reservoir E1 has sufficient water, it will actively supply water to H2; units 1 to 3 of pumping station F2 will operate partially to supply water to water plant D9, and units 4 to 9 of pumping station F3 will operate partially to supply water to H3; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, and units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water needs of H1. Demand: Reservoir E1 will release its basic flow rate, ensuring the water level does not exceed the flood control limit. During the storage period, pumping stations F1 and F2 will simultaneously replenish the reservoir, with units 1 to 3 of pumping station F2 supplying water to water plant D9. Units 4 to 9 of pumping stations F1 and F2 will simultaneously supply water to reservoir E1. During the dry season, water will be supplied initially through pumping stations, prioritizing reservoir water storage. While ensuring the quality of treated water meets standards, reservoir water will be fully utilized, and some slightly saline river water will be mixed in for water plant production. Later in the water supply period, the reservoir water supply will be gradually increased based on inflow forecasts.

[0061] Option 6: During the drawdown period, pumping station F1 will be shut down; units 4 to 9 of pumping station F2 will be shut down; when reservoir E1 has sufficient water, it will actively supply water to H2; units 1 to 3 of pumping station F2 will operate partially to supply water to water plant D9, and units 4 to 9 of pumping station F3 will operate partially to supply water to H3; during the main flood season, pumping station F1 will be shut down; units 1 to 3 of pumping station F2 will meet the water supply needs of D9, and units 4 to 9 of pumping station F2 will be shut down, with two units remaining to store water in reservoir E1 or directly pump water from the outer river as needed, to cope with high turbidity water, water pollution, and other situations where pumping station F3 cannot draw water; pumping station F3 will meet the water demand of H1; reservoir E1 will release its basic flow rate, with the water level not exceeding the flood limit level; during the water storage period, pumping station F1... The phased replenishment plan for pumping station F2 involves pumping units 1 to 3 supplying water to water plant D9. When the water level in reservoir E1 is below 44m and the predicted desalination rate of F2 is greater than 90%, pumping units 4 to 9 of pumping station F2 will replenish reservoir E1. When the water level in reservoir E1 is above 44m or the predicted desalination rate of F2 is less than 90%, pumping stations F1 and F2 will replenish reservoir E1 simultaneously. During the dry season, the principle of supplying water first and then reducing it will be followed. In the initial stage of water supply, pumping stations will supply water first, while retaining as much reservoir water as possible. Under the premise of meeting the water quality standards for water leaving the plant, reservoir water will be fully utilized, and some river water with slightly excessive salinity will be reasonably mixed to supply water plant production. In the later stage of water supply, the reservoir water supply will be gradually increased according to the inflow forecast.

[0062] Based on the scheduling schemes for different periods, this application embodiment uses six schemes to evaluate and analyze the scheduling effect. The evaluation indicators after scheduling for each scheme are shown in Table 2.

[0063] Table 2. Evaluation of Scheduling Schemes for Measured Saltwater Intrusion Processes from 2022 to 2023

[0064] like Figure 3 The diagram illustrates the simulated water level processes of Reservoir E1 under six different scenarios; as shown... Figure 4 The diagram illustrates the simulated power consumption process of four pumping stations under Scheme 1; as shown... Figure 5 The diagram illustrates the simulated power consumption process of four pumping stations under Scheme 2; as shown... Figure 6 The diagram illustrates the simulated power consumption process of the four pump stations under Scheme 3, as shown below. Figure 7 The diagram illustrates the simulated power consumption process of the four pump stations under Scheme 4, as shown below. Figure 8 The diagram illustrates the simulated power consumption process of the four pumping stations under scheme 5, as shown below. Figure 9The diagram illustrates the simulated power consumption of four pumping stations under Scheme 6. Comparative analysis shows that under Scheme 1, during the drawdown period, the reservoir water level gradually rises from April to August, reducing the water storage pressure during the transition from the flood season to the dry season. However, due to the lack of water level reduction, there is a risk of water spillage during the flood season if there is heavy rainfall. Furthermore, under this scheme, the water pumped into the reservoir from the outer river is not replaced for a long period, increasing the risk of algal blooms. Under Scheme 2, the reservoir experiences concentrated water level reduction from April to May, and operates below the flood control limit from June to August, reducing the risk of water spillage and algal blooms. Regarding pumping station power consumption, this scheme reduces the power consumption of pumping stations 1-3 and F3 in F2 during the drawdown period, while increasing the power consumption of pumping stations 4-9 and F1 in F2 during the water storage period due to increased pumping demand.

[0065] This application provides a simulation operation device for an urban water supply network in a tidal river network area. (See attached document.) Figure 10 The simulation operation device for urban water supply networks in tidal river network areas provided in this application embodiment includes: Data acquisition module 710 is used to acquire water supply projects and water demand projects in the target area; The topology graph construction module 720 is used to construct a water supply network topology graph of the target area based on water supply projects and water demand projects. The water supply network topology graph includes water supply projects and water demand projects as nodes and directed edges between each node, and each directed edge has a preset pipeline priority order. The path generation module 730 is used to generate a water supply path sequence for the target area based on the water supply network topology map and pipeline priority order. The simulation operation module 740 is used to simulate the operation of the water supply system based on the water supply path sequence and preset constraints; the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

[0066] It should be noted that the principle of the simulation operation device for urban water supply network in tidal river network area provided in this application embodiment to solve the technical problem is similar to the simulation operation method for urban water supply network in tidal river network area provided in this application embodiment. Therefore, the implementation of the simulation operation device for urban water supply network in tidal river network area provided in this application embodiment can refer to the implementation of the simulation operation method for urban water supply network in tidal river network area provided in this application embodiment, and the repeated parts will not be described again.

[0067] After introducing the simulation operation method and apparatus for urban water supply networks in tidal river network areas provided in the embodiments of this application, the electronic equipment provided in the embodiments of this application will be briefly introduced next.

[0068] See Figure 11As shown, the electronic device 500 provided in this application embodiment includes at least a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program, it implements the simulation operation method of the urban water supply network in the tidal river network area provided in this application embodiment.

[0069] The electronic device 500 provided in this application embodiment may further include a bus 503 connecting different components (including processor 501 and memory 502). The bus 503 represents one or more types of bus structures, including memory bus, peripheral bus, local area bus, etc.

[0070] Memory 502 may include a readable storage medium in the form of volatile memory, such as random access memory (RAM) 5021 and / or cache memory 5022, and may further include read-only memory (ROM) 5023. Memory 502 may also include a program tool 5025 having a set (at least one) of program modules 5024, including but not limited to an operating subsystem, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0071] Processor 501 can be a single processing element or a collective term for multiple processing elements. For example, processor 501 can be a central processing unit (CPU), or one or more integrated circuits configured to implement the simulation operation method of the urban water supply network in the tidal river network area provided in the embodiments of this application. Specifically, processor 501 can be a general-purpose processor, including but not limited to CPUs, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0072] Electronic device 500 can communicate with one or more external devices 504 (e.g., keyboard, remote control, etc.), and also with one or more devices that enable a user to interact with electronic device 500 (e.g., mobile phone, computer, etc.), and / or with devices that enable electronic device 500 to communicate with one or more other electronic devices 500 (e.g., router, modem, etc.). This communication can be performed through input / output (I / O) interface 505. Furthermore, electronic device 500 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) through network adapter 506. Figure 11 As shown, network adapter 506 communicates with other modules of electronic device 500 via bus 503. It should be understood that, although... Figure 11 As not shown, other hardware and / or software modules may be used in conjunction with the electronic device 500, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) subsystems, tape drives, and data backup storage subsystems.

[0073] It should be noted that, Figure 11 The electronic device 500 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0074] The following describes the computer-readable storage medium provided in the embodiments of this application. The computer-readable storage medium provided in the embodiments of this application stores computer instructions, which, when executed by a processor, implement the simulation operation method of the urban water supply network in a tidal river network area provided in the embodiments of this application. Specifically, the computer instructions can be built into or installed in the processor, so that the processor can implement the simulation operation method of the urban water supply network in a tidal river network area provided in the embodiments of this application by executing the built-in or installed computer instructions.

[0075] In addition, the simulation operation method of the urban water supply network in the tidal river network area provided in the embodiments of this application can also be implemented as a computer program product. The computer program product includes program code, which implements the simulation operation method of the urban water supply network in the tidal river network area provided in the embodiments of this application when running on a processor.

[0076] The computer program product provided in this application embodiment may employ one or more computer-readable storage media, which may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. Specifically, more specific examples (a non-exhaustive list) of computer-readable storage media include electrical connections with one or more wires, portable disks, hard disks, RAM, ROM, erasable programmable read-only memory (EPROM), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0077] The computer program product provided in this application embodiment can be a CD-ROM and include program code, and can also run on electronic devices such as computers. However, the computer program product provided in this application embodiment is not limited thereto. In this application embodiment, the computer-readable storage medium can be any tangible medium that contains or stores program code, which can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0078] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0079] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0080] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0081] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A method for simulating the operation of an urban water supply network in a tidal river network area, characterized in that, include: Acquire information on water supply and water demand projects in the target area; Based on the water supply project and the water demand project, construct a water supply network topology map for the target area; The water supply network topology includes directed edges between the water supply projects and the water demand projects, with each directed edge having a preset pipeline priority order. The pipeline priority order includes a water supply pipeline priority order and a water demand pipeline priority order. The water supply pipeline priority order is the order of water supply pipelines from the current water supply project downstream to each of the downstream water supply projects or water demand projects. The water demand pipeline priority order is the order of water demand pipelines from the water demand project upstream to each of the upstream water supply projects. Based on the water supply network topology and the pipeline priority order, a water supply path sequence for the target area is generated; wherein, generating the water supply path sequence for the target area includes: generating a water supply order sequence based on the water supply projects, the water supply pipeline priority order, and the water demand projects; generating a water demand order sequence based on the water demand projects, the water demand pipeline priority order, and the water supply projects; and processing the water supply order sequence and the water demand order sequence according to a preset rule to obtain the water supply path sequence for the target area; wherein, the preset rule is based on the order of the water demand paths in the water demand order sequence and the water supply order... The priority order of the water supply pipelines in the column is used to generate a water supply path sequence through an iterative filtering method, such that the downstream water supply path of any water supply project is selected sequentially according to the priority order of the water supply pipelines in the water supply sequence. Based on the water supply project, the priority order of the water supply pipelines, and the water demand project, a depth-first traversal algorithm is used to generate all water transmission paths from the water supply project to the water demand project, thus obtaining a water supply sequence. Based on the water demand project, the priority order of the water demand pipelines, and the water supply project, a depth-first traversal algorithm is used to generate all water transmission paths from the water demand project to the water supply project, thus obtaining a water demand sequence. Based on the water supply path sequence and preset constraints, the water supply system is simulated to assess the water shortage risk in the target area; wherein the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

2. The simulation operation method for urban water supply networks in tidal river network areas according to claim 1, characterized in that, The constraints on the pumping station include: the chlorine content constraint at the water intake and the water intake capacity constraint of the pumping station. The chlorine content constraint at the water intake is determined as follows: when the real-time chlorine content at the water intake of the pumping station is not less than a preset threshold, the water intake capacity of the pumping station is determined to be zero; when the real-time chlorine content at the water intake of the pumping station is less than the preset threshold, the water intake capacity of the pumping station is determined to be the minimum value of the river inflow. The water intake capacity constraint of the pumping station is that the total water supply of the pumping station per unit time shall not exceed the designed water intake of the pumping station.

3. The simulation operation method for urban water supply networks in tidal river network areas according to claim 1, characterized in that, The reservoir constraints include water balance constraints and water level constraints; The water balance constraint is that the change in reservoir storage is equal to the inflow minus the total water supply, outflow, and evaporation. The water level constraint is that the reservoir's operating water level is not lower than the dead water level and not higher than the flood limit water level or the normal storage water level.

4. The simulation operation method for urban water supply networks in tidal river network areas according to claim 1, characterized in that, The pipeline constraint is a water delivery capacity constraint, meaning that the actual water supply from any water source node to any water demand node does not exceed the maximum water delivery capacity of the pipeline, and is not less than the minimum water delivery capacity of the pipeline.

5. The simulation operation method for urban water supply networks in tidal river networks according to claim 1, characterized in that, After the simulation runs, the following is also included: Obtain the water replenishment volume, pumping volume, and water supply volume of each of the aforementioned water supply projects; A water shortage risk assessment is conducted based on the water replenishment volume, the water pumping volume, and the water supply volume to obtain the risk assessment results of the water supply network.

6. A simulation operation device for an urban water supply network in a tidal river network area, applied to the simulation operation method for an urban water supply network in a tidal river network area as described in any one of claims 1 to 5, characterized in that, include: The data acquisition module is used to acquire information on water supply and demand projects in the target area. The topology construction module is used to construct a water supply network topology map of the target area based on the water supply project and the water demand project; The water supply network topology includes directed edges between the water supply projects and the water demand projects, with each directed edge having a preset pipeline priority order. The pipeline priority order includes a water supply pipeline priority order and a water demand pipeline priority order. The water supply pipeline priority order is the order of water supply pipelines from the current water supply project downstream to each of the downstream water supply projects or water demand projects. The water demand pipeline priority order is the order of water demand pipelines from the water demand project upstream to each of the upstream water supply projects. A path generation module is used to generate a water supply path sequence for the target area based on the water supply network topology and the pipeline priority order. Generating the water supply path sequence for the target area includes: generating a water supply order sequence based on the water supply projects, the water supply pipeline priority order, and the water demand projects; generating a water demand order sequence based on the water demand projects, the water demand pipeline priority order, and the water supply projects; and processing the water supply order sequence and the water demand order sequence according to a preset rule to obtain the water supply path sequence for the target area. The preset rule is based on the order of the water demand paths in the water demand order sequence and the... The water supply pipeline priority order of the water supply sequence is used to generate a water supply path sequence through an iterative filtering method, such that the downstream water supply path of any water supply project is selected sequentially according to the water supply pipeline priority order of the water supply sequence. Based on the water supply project, the water supply pipeline priority order, and the water demand project, a depth-first traversal algorithm is used to generate all water transmission paths from the water supply project to the water demand project, thus obtaining the water supply sequence. Based on the water demand project, the water demand pipeline priority order, and the water supply project, a depth-first traversal algorithm is used to generate all water transmission paths from the water demand project to the water supply project, thus obtaining the water demand sequence. The simulation operation module is used to simulate the operation of the water supply system based on the water supply path sequence and preset constraints, so as to assess the water shortage risk of the target area; wherein, the preset constraints include pump station constraints, reservoir constraints and pipeline constraints.

7. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a method for simulating the operation of an urban water supply network in a tidal river network area as described in any one of claims 1 to 5.

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