River water and sediment coordinated regulation and control method, device, equipment, medium and product

Abstract

The invention discloses a river water and sediment coordinated regulation and control method, device and equipment, a medium and a product, and relates to the technical field of hydrological function remediation, and the method comprises the following steps: permutation and combination are carried out on all sub-targets to obtain a plurality of regulation and control schemes corresponding to river water and sediment to be regulated and controlled; constructing a river water and sediment regulation and control multi-target collaborative model corresponding to each regulation and control scheme; the river water and sediment regulation and control multi-target collaborative model corresponding to the regulation and control scheme comprises a target function corresponding to the regulation and control scheme and a constraint condition corresponding to the regulation and control scheme; the river water and sediment regulation and control multi-target coordination model corresponding to each regulation and control scheme is solved to obtain the coupling coordination degree of each regulation and control scheme; the optimal regulation and control scheme is determined according to the coupling coordination degree of all the regulation and control schemes, the water and sediment of the river to be regulated and controlled are regulated and controlled according to the optimal regulation and control scheme, complex water and sediment dynamic changes can be dealt with, and benign maintenance of a river ecosystem and sustainable development of social economy are achieved.

Description

Technical Field

[0001] This application relates to the field of hydrological function restoration technology, and in particular to a method, device, equipment, medium and product for coordinated regulation of river water and sediment. Background Technology

[0002] Traditional methods of river water and sediment regulation are limited to single-function water resource or sediment management approaches, making them ill-suited to address complex dynamic changes in water and sediment. Therefore, there is an urgent need for a river water and sediment regulation method capable of handling these dynamic changes, in order to achieve the healthy maintenance of river ecosystems and sustainable socio-economic development. Summary of the Invention

[0003] The purpose of this application is to provide a method, device, equipment, medium and product for the coordinated regulation of river water and sediment, which can cope with complex dynamic changes in water and sediment, and achieve the benign maintenance of river ecosystem and sustainable socio-economic development.

[0004] To achieve the above objectives, this application provides the following solution:

[0005] Firstly, this application provides a method for coordinated regulation of river water and sediment, including:

[0006] By arranging and combining the sub-objectives, multiple control schemes are obtained for the water and sediment of the river to be regulated. Each control scheme includes one or more sub-objectives. Each sub-objective corresponds to an indicator of a subsystem. The subsystems include flood control and sediment transport system, ecological environment subsystem, and socio-economic subsystem.

[0007] Construct a multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme; the multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme includes the objective function and the constraint conditions corresponding to each regulation scheme; the objective function corresponding to each regulation scheme includes the objective function corresponding to each sub-objective in the regulation scheme;

[0008] The coupling coordination degree of each regulation scheme is obtained by solving the multi-objective coordinated model of river water and sediment regulation corresponding to each regulation scheme;

[0009] The optimal control scheme is determined based on the coupling coordination degree of each control scheme, and the water and sediment of the river to be controlled are controlled according to the optimal control scheme.

[0010] Optionally, the sub-objectives corresponding to the indicators of the flood control and sediment transport system include: minimizing flood control risk, maximizing river silt reduction, and maximizing reservoir sediment discharge; the sub-objectives corresponding to the indicators of the ecological environment subsystem include: minimizing ecological water shortage rate, minimizing ecological impact, and minimizing water quality maintenance water shortage rate; the sub-objectives corresponding to the indicators of the socio-economic subsystem include: minimizing water shortage rate, maximizing net water supply benefits, and maximizing power generation benefits.

[0011] Optionally, when the control scheme includes all sub-objectives, the objective function corresponding to the control scheme is:

[0012] Where D represents the coupling coordination degree of the control scheme, U1 represents the development index of the flood discharge and sediment transport system, U2 represents the development index of the ecological environment subsystem, U3 represents the development index of the socio-economic subsystem, α1 represents the weight of the flood discharge and sediment transport system, α2 represents the weight of the ecological environment subsystem, α3 represents the weight of the socio-economic subsystem, and F 1n F represents the nth index of the flood control and sediment transport system. 2n F represents the nth indicator of the ecological environment subsystem. 3n β represents the nth indicator of the socio-economic subsystem. 1n β represents the weight of the nth index in the flood control and sediment transport system. 2n β represents the weight of the nth indicator in the ecological environment subsystem. 3n This represents the weight of the nth indicator in the socio-economic subsystem.

[0013] Optional,

[0014] The specific formula for minimizing flood risk is expressed as follows:

[0015] The specific formula for the maximum river silt reduction is expressed as follows:

[0016] The specific formula for the maximum sediment discharge of a reservoir is expressed as follows: Among them, F 11 Indicates flood risk, minF 11 ω1 represents the minimum flood control risk, N represents the weight of reservoir safety during a flood, and V represents the total number of reservoirs. maxi V represents the reservoir capacity corresponding to the highest water level of the i-th reservoir. 1i V represents the reservoir capacity corresponding to the initial water level of the i-th reservoir. Di ω2 represents the reservoir capacity corresponding to the preset flood level of the i-th reservoir, ω2 represents the weight of river flood control safety during the flood, L represents the total number of river sections, T represents the total number of scheduling times, and Q represents the total number of scheduling times. l,t Q represents the flow rate at time t in the l-th river segment; Bl F represents the design flow rate for the l-th river segment. 12 MaxF represents the amount of sediment reduction in the river channel. 12 This indicates that the river channel has the greatest silt reduction, S outl,t S represents the outflow sediment volume of the l-th river segment at time t. inl,t F represents the inflow sediment volume at time t in the l-th river segment. 13 The maximum amount of sediment discharged from the reservoir is represented by F. 13 This indicates that the reservoir has the largest sediment discharge, SRouti,t S represents the amount of sediment discharged from the i-th reservoir at time t. Rini,t This represents the amount of sediment entering the i-th reservoir at time t.

[0017] Optional,

[0018] The specific formula for minimizing the ecological water shortage rate is expressed as follows:

[0019] The specific formula for minimizing ecological impact is as follows:

[0020] The specific formula for minimizing the water shortage rate for maintaining water quality is expressed as follows: Among them, F 21 MinF represents the ecological water shortage rate. 21 This represents the minimum ecological water shortage rate, where T represents the total number of scheduling times, N represents the total number of reservoirs, and D represents the minimum ecological water shortage rate. E i,t Q represents the suitable ecological flow rate at time t in the downstream section of the i-th reservoir. E i,t F represents the ecological water supply flow of the i-th reservoir at time t. 22 Indicates the degree of ecological impact, minF 22 Z represents the minimum degree of ecological impact, and Z represents the number of evaluation indicators for the ecological impact of reservoir operation. o,z N represents the number of time periods during which the observed values ​​of ecological parameters or vegetation parameters fall within the target range of the z-th evaluation index for the ecological impact of reservoir scheduling. e,z F represents the number of time periods during which the expected ecological parameter values ​​fall within the target range of the z-th evaluation indicator for the ecological impact of reservoir scheduling. 23 Indicates the water quality maintenance deficit rate, minF 23 This indicates that the water quality maintenance rate is at its minimum, Q q i,t D represents the flow rate used for water purification within the discharge flow of the i-th reservoir at time t. q i,t This represents the water flow required to purify the downstream section of the i-th reservoir that is polluted at time t.

[0021] Optional,

[0022] The specific formula for minimizing the water shortage rate is expressed as follows:

[0023] The specific formula for maximizing the net water supply benefit is expressed as follows:

[0024] The specific formula for maximizing power generation efficiency is expressed as follows: Among them, F 31 MinF represents the water shortage rate. 31This indicates the minimum water shortage rate, T represents the total number of scheduling times, J represents the total number of water-using departments, and D represents the minimum water shortage rate. j,t W represents the water demand of the j-th water user sector at time t. j,t F represents the actual water supply from the reservoir to the j-th water user at time t. 32 Indicates the net benefit of water supply, maxF 32 C indicates that the net water supply benefit is the greatest. j F represents the net benefit of the reservoir to the j-th water user sector per unit volume of water supplied. 33 Indicates power generation efficiency, maxF 33 This indicates that the power generation efficiency is maximized, and N represents the total number of reservoirs. Q represents the grid connection price of the reservoir, K represents the output coefficient of the reservoir hydropower station, and Q represents the power input price of the reservoir. i,t Let ΔH represent the power generation flow of the i-th reservoir at time t. i,t Let Δt represent the hydropower head generated by the i-th reservoir at time t, and let Δt represent the time interval between two adjacent times.

[0025] Secondly, this application provides a river water and sediment coordinated regulation device, comprising:

[0026] The scheduling scheme determination module is used to arrange and combine various sub-objectives to obtain multiple control schemes corresponding to the water and sediment of the river to be regulated; each control scheme includes one or more sub-objectives; one sub-objective corresponds to one indicator of a subsystem; the subsystems include flood control and sediment transport system, ecological environment subsystem, and socio-economic subsystem;

[0027] The model building module is used to construct a multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme; the multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme includes the objective function and the constraint conditions corresponding to each regulation scheme; the objective function corresponding to each regulation scheme includes the objective function corresponding to each sub-objective in the regulation scheme;

[0028] The solution module is used to solve the multi-objective coordinated model of river water and sediment regulation corresponding to each regulation scheme to obtain the coupling coordination degree of each regulation scheme;

[0029] The optimal control scheme determination module is used to determine the optimal control scheme based on the coupling coordination degree of each control scheme, and to regulate the water and sediment of the river to be regulated according to the optimal control scheme.

[0030] Thirdly, this application provides a computer 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 river water and sediment coordinated regulation method described in any one of the above.

[0031] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the river water and sediment coordinated regulation method described above.

[0032] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the river water and sediment coordinated regulation method described above.

[0033] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0034] This application provides a method, device, equipment, medium, and product for coordinated regulation of river water and sediment. Multiple regulation schemes corresponding to the river water and sediment to be regulated are obtained by arranging and combining various sub-objectives. Each regulation scheme includes one or more sub-objectives; each sub-objective corresponds to an indicator of a subsystem; the subsystems include a flood control and sediment transport system, an ecological environment subsystem, and a socio-economic subsystem. Based on the objective functions corresponding to the regulation schemes, including the objective functions corresponding to each sub-objective in the regulation scheme and the constraints corresponding to the regulation scheme, a multi-objective coordinated model for river water and sediment regulation is constructed for each regulation scheme. The objective functions corresponding to each sub-objective in the three subsystems of flood control and sediment transport, ecological environment, and socio-economic regulation, along with the constraints, are coupled to construct the multi-objective coordinated model for river water and sediment regulation. This model enables coordinated control of river water and sediment, solving the problem of using a single water resource or sediment management method to cope with complex dynamic changes in water and sediment, and achieving the benign maintenance of the river ecosystem and the sustainable development of the socio-economic system. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an application environment diagram of a river water and sediment coordinated regulation method in one embodiment of this application;

[0037] Figure 2 A schematic diagram illustrating the principle of a river water and sediment synergistic regulation method provided in an embodiment of this application;

[0038] Figure 3 A flowchart illustrating a method for coordinated regulation of river water and sediment provided in one embodiment of this application;

[0039] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The river water and sediment coordinated regulation method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. The data storage system can be set up independently, integrated into server 104, or placed in the cloud or on another server. Terminal 102 can send various sub-targets to server 104. After receiving the sub-targets, server 104 arranges and combines them to obtain multiple control schemes corresponding to the river water and sediment to be regulated; constructs a multi-objective collaborative model for river water and sediment regulation corresponding to each control scheme; solves the multi-objective collaborative model for river water and sediment regulation corresponding to each control scheme to obtain the coupling coordination degree of each control scheme; determines the optimal control scheme based on the coupling coordination degree of each control scheme, and regulates the river water and sediment to be regulated according to the optimal control scheme. Server 104 can feed back the obtained optimal control scheme to terminal 102. In addition, in some embodiments, the river water and sediment coordinated regulation method can also be implemented by the server 104 or the terminal 102 alone. For example, the terminal 102 can directly perform river water and sediment coordinated regulation on the river water and sediment to be regulated, or the server 104 can obtain the sub-targets from the data storage system and perform river water and sediment coordinated regulation on each sub-target.

[0043] The terminal 102 can be, but is not limited to, various desktop computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, and smart in-vehicle devices. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices. The server 104 can be implemented using a standalone server or a server cluster composed of multiple servers, or it can be a cloud server.

[0044] In an exemplary embodiment, to address the shortcomings of existing regulation methods, this application provides a river water and sediment coordinated regulation method. First, it analyzes the laws governing river water production and consumption, sediment movement, etc., and constructs a multi-objective coordinated overall framework for river water and sediment regulation, which can be represented as M = {F, L, D}, where M represents the multi-objective coordinated model for river water and sediment regulation; F represents the objective function; L represents the constraint condition; and D represents the coupling coordination degree. Then, it constructs the internal benefit objective function of the subsystem and determines the internal constraint condition of the subsystem. Finally, it constructs and solves the multi-objective coordinated model for river water and sediment regulation, determines the coupling coordination degree level, and selects the optimal scheme with the highest coordination degree for regulation. This application takes river morphology, ecological flow, sediment, and reservoir (group) regulation as the main objects. Addressing the problem of uncoordinated river water and sediment relationships, it proposes a multi-objective coordinated model for river water and sediment regulation, comprehensively considering the requirements of flood control, sediment reduction, water and sediment relationship coordination, rational allocation and efficient utilization of water resources, and river water ecological protection, thereby achieving a coordinated improvement of the service functions of the three major subsystems of watershed flood and sediment transport, ecological environment, and socio-economic development. This method is executed by a computer device, specifically by a terminal or server alone, or by both a terminal and a server. In this embodiment, the method is applied to... Figure 1 Taking server 104 as an example, the explanation is as follows: Figure 2 and Figure 3 As shown, it includes the following steps. Wherein:

[0045] Step 201: Arrange and combine the sub-objectives to obtain multiple control schemes corresponding to the river water and sediment to be controlled; each control scheme includes one or more sub-objectives; one sub-objective corresponds to one indicator of a subsystem; the subsystems include flood control and sediment transport system, ecological environment subsystem, and socio-economic subsystem.

[0046] Step 202: Construct a multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme; the multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme includes the objective function and the constraint conditions corresponding to each regulation scheme; the objective function of each regulation scheme includes the objective function corresponding to each sub-objective in the regulation scheme, and the constraint conditions of each regulation scheme include the parameters in the objective function of the regulation scheme.

[0047] Step 203: Solve the multi-objective collaborative model of river water and sediment regulation corresponding to each regulation scheme to obtain the coupling coordination degree of each regulation scheme.

[0048] Step 204: Determine the optimal control scheme based on the coupling coordination degree of each control scheme, and control the water and sediment of the river to be controlled according to the optimal control scheme.

[0049] In another embodiment of this application, the flood-carrying sand system includes the following index: flood risk F11 River silt reduction F 12 And the amount of sediment discharged from the reservoir F 13 The ecological environment subsystem includes the following indicators: ecological water shortage rate F. 21 Ecological impact level F 22 and water quality maintenance water shortage rate F 23 The socio-economic subsystem includes the following indicators: water shortage rate F. 31 Net water supply benefits F 32 and power generation benefits F 33 Therefore, the sub-objectives corresponding to the indicators of the flood control and sediment transport system include: minimizing flood control risk, maximizing river silt reduction, and maximizing reservoir sediment discharge; the sub-objectives corresponding to the indicators of the ecological environment subsystem include: minimizing ecological water shortage rate, minimizing ecological impact, and minimizing water shortage rate for water quality maintenance; and the sub-objectives corresponding to the indicators of the socio-economic subsystem include: minimizing water shortage rate, maximizing net water supply benefits, and maximizing power generation benefits.

[0050] In another embodiment of this application, in accordance with the scientific viewpoint of watershed systems, the objective functions corresponding to the sub-objectives of the three subsystems of flood control and sediment transport, ecological environment and socio-economic development are comprehensively considered, and the internal benefit objective functions of the subsystems are coupled to form the internal benefit objective functions of the subsystems. The first-level and second-level constraints of each subsystem are clarified to obtain the internal constraints of the subsystems, and a multi-objective collaborative model for river water and sediment regulation is constructed to achieve the optimal allocation and coordinated development of watershed water and sediment resources.

[0051] Preferably, the internal benefit objective function of the subsystem includes a flood control and sediment transport benefit objective function, an ecological environment benefit objective function, and a socio-economic benefit objective function, wherein the flood control and sediment transport benefit objective function is:

[0052]

[0053] The objective function for ecological and environmental benefits is:

[0054]

[0055] The objective function for socio-economic benefits is:

[0056]

[0057] Among them, F 11 Indicates flood risk, minF 11 ω1 represents the minimum flood control risk, N represents the weight of reservoir safety during a flood, and V represents the total number of reservoirs. maxi This represents the reservoir capacity (in billions of m³) corresponding to the highest water level of the i-th reservoir. 3 V 1i This represents the reservoir capacity (in billions of m³) corresponding to the initial water level of the i-th reservoir. 3 V DiThis represents the reservoir capacity (in billions of m³) corresponding to the preset flood level of the i-th reservoir. 3 ), ω2 represents the weight of river channel flood control safety during the flood process, L represents the total number of river sections, T represents the total number of scheduling times, Q l,t Q represents the flow rate at time t in the l-th river segment (represented here by a flood control section); Bl This represents the design flow for the l-th river segment. For flood control operations, it is the flood level flow; for dike control operations, it is the dike standard flow. F 12 MaxF represents the amount of sediment reduction in the river channel. 12 This indicates that the river channel has the greatest silt reduction, S outl,t This represents the outflow sediment volume (in billions of cubic meters) at time t in the l-th river segment. 3 According to the empirical formula, S is calculated as follows: inl,t This represents the inflow sediment volume (in billions of cubic meters) at time t in the l-th river segment. 3 ), F 13 The maximum amount of sediment discharged from the reservoir is represented by F. 13 This indicates that the reservoir has the largest sediment discharge, S Routi,t This represents the amount of sediment discharged from the i-th reservoir at time t (in billions of cubic meters). 3 According to the empirical formula, S Rini,t This represents the amount of sediment entering the i-th reservoir at time t (in billions of cubic meters). 3 ). F 21 MinF represents the ecological water shortage rate. 21 This represents the minimum ecological water shortage rate, where T represents the total number of scheduling times, N represents the total number of reservoirs, and D represents the minimum ecological water shortage rate. E i,t This represents the suitable ecological flow (m³) at time t in the downstream river section of the i-th reservoir. 3 / s), Q E i,t Represents the ecological water supply flow (m³) of the i-th reservoir at time t. 3 / s), F 22 Indicates the degree of ecological impact, minF 22 Z represents the minimum degree of ecological impact, and Z represents the number of evaluation indicators for the ecological impact of reservoir operation. o,z N represents the number of time periods during which observed ecological parameters (including ammonia nitrogen, permanganate index, total nitrogen, and total phosphorus) or vegetation parameters (including normalized difference vegetation index, leaf area index, and vegetation cover) fall within the target range of the z-th evaluation indicator for the ecological impact of reservoir operation. e,z F represents the number of time periods in which the expected ecological parameter values ​​fall within the target range of the z-th evaluation indicator for the ecological impact of reservoir scheduling. 23 Indicates the water quality maintenance deficit rate, minF 23 This indicates that the water quality maintenance rate is at its minimum, Q q i,tThis represents the flow rate (m³) used for water purification within the discharge flow of the i-th reservoir at time t. 3 / s), D q i,t This represents the water flow rate (m³) required to purify the water in the downstream section of the i-th polluted reservoir at time t. 3 / s), calculated using a one-dimensional water quality model, F 31 MinF represents the water shortage rate. 31 The minimum water shortage rate is represented by T, the total number of scheduling times is represented by J, and the total number of water-using sectors is represented by D, which includes three categories: industrial water, agricultural water, and domestic water. j,t This represents the water demand (m³) of the j-th water user sector at time t. 3 ), W j,t This represents the actual water supply (m³) from the reservoir to the j-th water user at time t. 3 ), F 32 Indicates the net benefit of water supply, maxF 32 C indicates that the net water supply benefit is the greatest. j This represents the net benefit (yuan / m³) of the reservoir to the j-th water user sector per unit volume of water supplied. 3 ), F 33 Indicates power generation efficiency, maxF 33 This indicates that the power generation efficiency is maximized, and N represents the total number of reservoirs. The grid connection price of the reservoir is represented by RMB / (kW·h), K represents the output coefficient of the reservoir hydropower station, and Q represents the output coefficient of the reservoir hydropower station. i,t Represents the power generation flow (m³) of the i-th reservoir at time t. 3 / s), ΔH i,t Let Δt represent the hydropower head (m) of the i-th reservoir at time t, and let Δt represent the time interval between two adjacent times.

[0058] Preferably, the internal constraints of the subsystem include primary constraints, secondary constraints, and higher constraints. Primary constraints are constraints that maintain the basic functional rigidity of the three subsystems under extreme water and sediment conditions. Secondary constraints are constraints that need to be met under non-extreme water and sediment conditions so that the three subsystems can exert greater benefits.

[0059] Specifically, in the flood control and sediment transport system:

[0060] The primary constraint is: under extreme water and sediment conditions, the following conditions must be met.

[0061] S Routi,t outl,t (4)

[0062] The secondary constraint condition is: under general water and sediment conditions, it should satisfy...

[0063] Q l,t <Q Bl ​(5)

[0064] In the ecological environment subsystem: the first-level constraint is to set minimum ecological flow and minimum number of ecological pulses under the dry water scenario; the second-level constraint is to set appropriate ecological flow and appropriate number of ecological pulses under the normal or abundant water conditions.

[0065] Within the socio-economic subsystem: the primary constraint is that, under a dry season, the minimum water diversion demand for domestic, industrial, and irrigation needs within the basin should be met; the secondary constraint is that, under normal or abundant water conditions, the water diversion volume of the river section should, as far as possible, meet the appropriate water demand for domestic, industrial, and irrigation needs within the basin.

[0066] Higher constraints include:

[0067] Water balance constraints:

[0068]

[0069] In the formula: V(t) and V(t-1) represent the water storage of the reservoir at time t and time t-1, which are the initial and final water storage of the reservoir at time t; Q(t) and Q(t-1) represent the inflow of the reservoir at time t and time t-1, which are the initial and final inflow of the reservoir at time t; q(t) and q(t-1) represent the outflow of the reservoir at time t and time t-1, which are the initial and final outflow of the reservoir at time t.

[0070] Upper and lower water level constraints:

[0071] H min ≤H≤ H max (7)

[0072] In the formula: H min H max The minimum and maximum water levels of the reservoir are represented in meters (m); H represents the water level of the reservoir in meters (m).

[0073] Discharge capacity constraints:

[0074] q(t)≤q(Z(t)) (8)

[0075] In the formula: q(t) represents the outflow at time t, and q(Z(t)) represents the discharge capacity at time t corresponding to the water level Z(t), including the water flow capacity of the spillway, the bottom discharge outlet and the turbine.

[0076] End-of-period water level constraints:

[0077] Z end =Z e (9)

[0078] In the formula: Z end Z represents the reservoir water level calculated at the end of the scheduling period. eThis indicates the control water level at the end of the scheduling period. This water level reflects the reservoir capacity reserved for subsequent rainfall during the flood rise phase, and reflects the water level of the Xingli Plan's backfilling at the tail end of the flood.

[0079] Output constraints:

[0080] P W,OUT,min (t)≤P W,OUT (t)≤P W,OUT,max (t) (10)

[0081] In the formula: P W,OUT,min (t) represents the lower limit of the turbine unit's output at time t; P W,OUT,max (t) represents the upper limit of the turbine unit's output at time t.

[0082] In another embodiment of this application, when the control scheme includes all sub-targets:

[0083] make

[0084]

[0085] In the formula: D represents the coupling coordination degree of the regulation scheme; C represents the coupling degree of the watershed system, reflecting the coupling effect between the three subsystems of flood discharge and sediment transport, ecological environment, and socio-economic development; T represents the coordination degree of the watershed system, reflecting the degree of harmony and consistency among the three subsystems during their development; U1, U2, and U3 represent the development indices of the flood discharge and sediment transport system, the ecological environment subsystem, and the socio-economic subsystem; α1, α2, and α3 represent the weights of the flood discharge and sediment transport system, the ecological environment subsystem, and the socio-economic subsystem. Since decision-makers attach different levels of importance to each subsystem, and the impact of each subsystem on the final optimal scheduling objective varies under different water and sediment conditions, the weight allocation of the subsystems needs to be determined based on the decision-makers' preferences and water and sediment conditions. The development indices of the flood discharge and sediment transport system, the ecological environment subsystem, and the socio-economic subsystem are expressed as:

[0086]

[0087] Where: U m U1 represents the development index of the m-th subsystem, U2 represents the development index of the flood control and sediment transport system, and U3 represents the development index of the ecological environment subsystem and the socio-economic subsystem, respectively; F mn F represents the nth index of the mth subsystem. 1n F represents the nth index of the flood control and sediment transport system. 2n F represents the nth indicator of the ecological environment subsystem. 3n β represents the nth indicator of the socio-economic subsystem. mn β represents the weight of the nth index of the mth subsystem. 1nβ represents the weight of the nth index in the flood control and sediment transport system. 2n β represents the weight of the nth indicator in the ecological environment subsystem. 3n Let represent the weight of the nth indicator in the socio-economic subsystem, then the objective function corresponding to the aforementioned control scheme is:

[0088]

[0089] Preferably, when the control scheme includes all sub-targets, the constraints corresponding to the control scheme include formulas (4) to (10).

[0090] In another embodiment provided in this application, step 203 specifically involves using the NSGA-II algorithm to solve the multi-objective collaborative model of river water and sediment regulation corresponding to each regulation scheme to obtain the coupling coordination degree of each regulation scheme.

[0091] In another embodiment provided in this application, step 204 specifically includes:

[0092] The calculated D values ​​are used to classify the coordination levels according to Table 1.

[0093] Table 1 Coupling Coordination Level

[0094]

[0095] The scheme corresponding to the excellent coordination level is determined as the optimal control scheme, and the water and sediment of the river to be controlled are controlled according to the optimal control scheme.

[0096] The proposed method for coordinated regulation of river water and sediment is based on the theory of watershed systems science. By coupling the objective functions corresponding to the sub-objectives of the three subsystems of flood control and sediment transport, ecological environment and socio-economic development, the method clarifies the primary and secondary constraints within each subsystem and constructs a multi-objective coordinated model for river water and sediment regulation. This model can cope with complex dynamic changes in water and sediment, realize the optimal allocation and coordinated development of watershed water and sediment resources, effectively solve the problem of uncoordinated comprehensive regulation of river water and sediment, and promote the healthy maintenance of river ecosystems and the sustainable development of socio-economic development.

[0097] Based on the same inventive concept, this application also provides a river water and sediment coordinated regulation device for implementing the above-mentioned river water and sediment coordinated regulation method. The solution provided by this device is similar to the solution described in the above-described method. Therefore, the specific limitations of one or more river water and sediment coordinated regulation device embodiments provided below can be found in the limitations of the river water and sediment coordinated regulation method above, and will not be repeated here.

[0098] In one exemplary embodiment, a river water and sediment coordinated regulation device is provided, comprising:

[0099] The scheduling scheme determination module is used to arrange and combine various sub-objectives to obtain multiple control schemes corresponding to the water and sediment of the river to be regulated; each control scheme includes one or more sub-objectives; one sub-objective corresponds to one indicator of a subsystem; the subsystems include flood control and sediment transport system, ecological environment subsystem, and socio-economic subsystem;

[0100] The model building module is used to construct a multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme; the multi-objective collaborative model for river water and sediment regulation corresponding to each regulation scheme includes the objective function and the constraint conditions corresponding to each regulation scheme; the objective function corresponding to each regulation scheme includes the objective function corresponding to each sub-objective in the regulation scheme;

[0101] The solution module is used to solve the multi-objective coordinated model of river water and sediment regulation corresponding to each regulation scheme to obtain the coupling coordination degree of each regulation scheme;

[0102] The optimal control scheme determination module is used to determine the optimal control scheme based on the coupling coordination degree of each control scheme, and to regulate the water and sediment of the river to be regulated according to the optimal control scheme.

[0103] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 4 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data on the coordinated regulation of river water and sediment. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for coordinated regulation of river water and sediment.

[0104] Those skilled in the art will understand that Figure 4The structures shown are merely block diagrams of some structures related to the present application and do not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements. In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method embodiments.

[0105] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the above-described method embodiments.

[0106] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the above-described method embodiments.

[0107] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0108] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0109] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0110] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for coordinated regulation of river water and sediment, characterized in that: The river water and sediment coordinated regulation method comprises: Arrange and combine the sub-goals to obtain multiple control schemes corresponding to the water and sediment of the river to be controlled; each control scheme includes one or more sub-goals; one sub-goal corresponds to an indicator of a subsystem; the subsystems include the flood discharge and sediment transport system, the ecological environment subsystem, and the socio-economic subsystem; Constructing a multi-objective collaborative model of river water and sediment control corresponding to each control scheme; the multi-objective collaborative model of river water and sediment control corresponding to the control scheme includes an objective function corresponding to the control scheme and a constraint condition corresponding to the control scheme; the objective function corresponding to the control scheme includes an objective function corresponding to each sub-objective in the control scheme; The multi-objective collaborative model of river water and sediment control corresponding to each control scheme is solved to obtain the coupling coordination degree of each control scheme; An optimal control scheme is determined according to the coupling coordination degree of each control scheme, and the water and sediment of the river to be controlled is regulated according to the optimal control scheme.

2. The method for coordinated regulation of river water and sediment according to claim 1, characterized in that: The sub-goals corresponding to the indicators of the flood discharge and sand transport system include: minimizing flood control risks, maximizing river sediment reduction, and maximizing reservoir sediment discharge; the sub-goals corresponding to the indicators of the ecological environment subsystem include: minimizing ecological water shortage rate, minimizing ecological impact, and minimizing water shortage rate for water quality maintenance; the sub-goals corresponding to the indicators of the socio-economic subsystem include: minimizing water shortage rate, maximizing net water supply benefit, and maximizing power generation benefit.

3. The method for coordinated regulation of river water and sediment according to claim 1, characterized in that: When the control scheme includes all sub-goals, the objective function corresponding to the control scheme is: Where D represents the coupling coordination degree of the control scheme, U1 represents the development index of the flood discharge and sand transport system, U2 represents the development index of the ecological environment subsystem, and U3 represents the development index of the social and economic subsystem. α1 represents the weight of the flood discharge and sand transport system, α2 represents the weight of the ecological environment subsystem, and α3 represents the weight of the social and economic subsystem. F 1n represents the nth index of the flood discharge and sand transport system, F 2n represents the nth index of the ecological environment subsystem, F 3n represents the nth indicator of the socio-economic subsystem, β 1n represents the weight of the nth indicator of the flood discharge and sand transport system, β 2n represents the weight of the nth indicator of the ecological environment subsystem, β 3n Represents the weight of the nth indicator of the socio-economic subsystem.

4. The method for coordinated regulation of river water and sediment according to claim 2, characterized in that: The specific formula for minimizing flood risk is expressed as follows: The specific formula for the maximum amount of river sediment reduction is expressed as The specific formula for the maximum sediment discharge from a reservoir is: Among them, F 11 Indicates flood risk, minF 11 Indicates the minimum flood control risk, ω1 indicates the weight of reservoir safety during the flood process, N indicates the total number of reservoirs; V max i represents the storage capacity corresponding to the highest water level of the i-th reservoir, V 1i represents the storage capacity corresponding to the initial water level of the i-th reservoir, V Di represents the storage capacity corresponding to the preset flood level of the i-th reservoir, ω2 represents the weight of river flood control safety during the flood process, L represents the total number of river sections, T represents the total number of dispatching times, Q l,t represents the flow rate of the lth river section at the tth moment; Q Bl represents the defense flow of the lth river section, F 12 Indicates the amount of river sedimentation reduction, maxF 12 Indicates the maximum amount of river sediment reduction, S outl,t represents the amount of sediment discharged from the lth river section at the tth moment, S inl,t represents the inlet sediment volume of the lth river section at the tth time, F 13 Indicates the sediment discharge of the reservoir, maxF 13 Indicates the maximum sediment discharge from the reservoir, S Routi,t represents the amount of sediment discharged from the i-th reservoir at time t, S Rini,t It represents the amount of sediment entering the i-th reservoir at the t-th moment.

5. The method for coordinated regulation of river water and sediment according to claim 2, characterized in that: The specific formula for the minimum ecological water shortage rate is expressed as follows: The specific formula for the minimum ecological impact is as follows: The specific formula for maintaining the minimum water shortage rate of water quality is expressed as follows: Among them, F 21 Indicates ecological water shortage rate, minF 21 Indicates the minimum ecological water shortage rate, T indicates the total number of dispatching times, N indicates the total number of reservoirs, and D Ei,t represents the suitable ecological flow of the downstream river section of the i-th reservoir at the t-th moment, Q Ei,t represents the ecological water supply flow of the i-th reservoir at the t-th time, F 22 Indicates the degree of ecological impact, minF 22 Indicates the minimum ecological impact, Z indicates the number of evaluation indicators of reservoir operation on ecology, N o,z N represents the number of time periods when the observed values ​​of ecological parameters or vegetation parameters fall within the target range of the zth evaluation index of the impact of reservoir operation on ecology. e,z represents the number of time periods in which the expected ecological parameter value falls within the target range of the zth evaluation index of the ecological impact of reservoir operation, F 23 Indicates water quality maintenance water shortage rate, minF 23 Indicates that water quality maintains the minimum water shortage rate, Q qi,t represents the amount of water used for water purification in the discharge flow of the i-th reservoir at time t, D qi,t It represents the water flow required to purify the water quality of the river section downstream of the i-th reservoir that is polluted at time t.

6. The method for coordinated regulation of river water and sediment according to claim 2, characterized in that: The specific formula for the minimum water shortage rate is expressed as The specific formula for the maximum net benefit of water supply is expressed as The specific formula for maximum power generation efficiency is expressed as Among them, F 31 Indicates water shortage rate, minF 31 represents the minimum water shortage rate, T represents the total number of dispatching times, J represents the total number of water-using departments, and D j,t represents the water demand of the jth water-using department at the tth moment, W j,t represents the actual water supply of the reservoir to the j-th water user at the t-th moment, F 32 Indicates the net benefit of water supply, maxF 32 Indicates that the net benefit of water supply is the largest, C j F represents the net benefit of the reservoir to the j-th user department per unit volume of water supply, 33 Indicates the power generation efficiency, maxF 33 represents the maximum power generation benefit, N represents the total number of reservoirs, represents the grid-connected electricity price of the reservoir, K represents the output coefficient of the reservoir hydropower station, Q i,t represents the power generation flow of the i-th reservoir at time t, ΔH i,t It represents the power generation head of the i-th reservoir at the t-th moment, and Δt represents the time period between two adjacent moments.

7. A river water and sediment coordinated control device, characterized in that: The river water and sediment coordinated control device comprises: The scheduling scheme determination module is used to arrange and combine the sub-targets to obtain multiple control schemes corresponding to the water and sediment of the river to be regulated; each control scheme includes one or more sub-targets; one sub-target corresponds to an indicator of a subsystem; the subsystems include the flood discharge and sediment transport system, the ecological environment subsystem, and the socio-economic subsystem; A model building module is used to build a multi-objective collaborative model of river water and sediment control corresponding to each control scheme; the multi-objective collaborative model of river water and sediment control corresponding to the control scheme includes an objective function corresponding to the control scheme and a constraint condition corresponding to the control scheme; the objective function corresponding to the control scheme includes an objective function corresponding to each sub-objective in the control scheme; A solution module is used to solve the multi-objective collaborative model of river water and sediment control corresponding to each control scheme to obtain the coupling coordination degree of each control scheme; The optimal control scheme determination module is used to determine the optimal control scheme according to the coupling coordination degree of each control scheme, and control the water and sediment of the river to be regulated according to the optimal control scheme.

8. A computer device comprising: 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 river water and sediment coordinated regulation method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the river water and sediment coordinated regulation method described in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the river water and sediment coordinated regulation method described in any one of claims 1 to 6 is implemented.

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