A joint dispatching method of reservoir groups in a river basin based on ecological water supply objectives

Abstract

The present invention discloses a method for joint dispatching of a group of reservoirs in a river basin based on an ecological water supply target, which belongs to the technical field of water resource dispatching and can solve the problem that the existing dispatching methods are difficult to coordinately guarantee ecological water supply and conventional water supply, resulting in low water resource utilization. The method comprises: S1, according to multiple ecological environment levels, determining the ecological target sequence of each reservoir in the reservoir group of the target river basin at each ecological environment level; S2, according to the ecological target sequence, and the conventional target sequence, conventional target guarantee rate and design operation parameters of each reservoir, determining the dispatching information of each reservoir in the target river basin at each ecological environment level; S3, determining the joint dispatching rules of the reservoir group according to the dispatching information, and dispatching according to the joint dispatching rules. The present invention is used for comprehensive dispatching of a reservoir group.

Description

Technical Field

[0001] The invention relates to a joint dispatching method of a reservoir group in a river basin based on an ecological water supply target, and belongs to the technical field of water resource dispatching. Background Art

[0002] Ecological water supply means that in order to maintain the virtuous cycle of the basin ecosystem, a certain amount of water must be provided for the balance and development of the basin ecosystem during the development and utilization of basin water resources. Ecological water supply is a water use unit parallel to conventional water supply for industry, agriculture, life, etc. in the basin.

[0003] At present, ecological water supply and conventional water supply are usually separated in actual scheduling. The two are unrelated and are carried out separately, so that ecological water supply and conventional water supply are often in an opposing state of "grabbing water", which makes the river basin unable to fully utilize the comprehensive utilization value of water resources. Summary of the invention

[0004] The present invention provides a method for joint dispatching of a group of reservoirs in a river basin based on the ecological water supply target, which can solve the problem that existing dispatching methods are difficult to coordinately ensure ecological water supply and conventional water supply, resulting in low water resource utilization.

[0005] The present invention provides a method for joint dispatching of a group of reservoirs in a river basin based on an ecological water supply target, the method comprising: S1. According to multiple ecological environment levels, determine the ecological target sequence of each reservoir in the reservoir group of the target river basin at each ecological environment level; S2. Determine the dispatching information of each reservoir in the target basin at each ecological environment level according to the ecological target sequence, the conventional target sequence of each reservoir, the conventional target guarantee rate and the design operation parameters; S3. Determine the joint dispatching rules of the reservoir group according to the dispatching information, and perform dispatching according to the joint dispatching rules.

[0006] Optionally, the S2 specifically includes: S21, constructing an ecological water shortage optimization model for the mainstream of the target basin according to the ecological target sequence, the design operation parameters of each reservoir and the conventional target guarantee rate of each reservoir; S22, constructing a water supply optimization model for each reservoir according to the ecological target sequence, the design operation parameters of each reservoir and the conventional target sequence of each reservoir; S23. Determine the dispatching information of each reservoir in the target watershed at each ecological environment level according to the ecological water shortage optimization model and the water supply optimization model.

[0007] Optionally, the ecological water shortage optimization model includes an optimization function for the ecological water shortage of the mainstream and constraints of each reservoir.

[0008] Optionally, the S21 specifically includes: Establishing an optimization function for ecological water shortage of the main stream according to the ecological target sequence; The constraints of each reservoir are established according to the design operating parameters of each reservoir and the conventional target guarantee rate of each reservoir.

[0009] Optionally, the water supply optimization model includes an ecological water supply optimization function, a conventional water supply optimization function and a power generation optimization function.

[0010] Optionally, the S22 specifically includes: Establishing an ecological water supply optimization function for each reservoir according to the ecological target sequence; Establish a conventional water supply optimization function for each reservoir based on the conventional target sequence of each reservoir; The power generation optimization function of each reservoir is established according to the design and operation parameters of each reservoir.

[0011] Optionally, the S23 specifically includes: The ecological water shortage optimization model and the water supply optimization model are analyzed by using a multi-objective genetic algorithm to obtain the dispatching information of each reservoir in the target watershed at each ecological environment level.

[0012] Optionally, the scheduling information includes a water supply flow sequence for each reservoir corresponding to the ecological target sequence and the conventional target sequence.

[0013] Optionally, the S1 specifically includes: According to multiple ecological environment levels, determine the ecological demand sequence of the mainstream of the target basin under each ecological environment level; According to the topological relationship between the ecological demand sequence and the reservoir group of the target watershed, the ecological target sequence of each reservoir in the reservoir group of the target watershed at each ecological environment level is determined.

[0014] Optionally, the conventional target sequence includes at least two of a life target sequence, a production target sequence and an agricultural target sequence.

[0015] The beneficial effects that the present invention can produce include: The present invention determines the ecological target sequence of each reservoir in the reservoir group of the target river basin based on each ecological environment level, and then determines the scheduling information of each reservoir under each ecological environment level in combination with the conventional target sequence of each reservoir, thereby synergistically ensuring ecological water supply and conventional water supply, achieving a dynamic balance between ecological water supply and conventional water supply, and improving the comprehensive utilization efficiency of water resources and the overall scheduling benefit of the reservoir group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A flow chart of a method for joint dispatching of a group of reservoirs in a river basin based on an ecological water supply target provided by an embodiment of the present invention; Figure 2 A schematic diagram of the arrangement of multiple reservoirs in a target watershed provided by an embodiment of the present invention; Figure 3 A Pareto scatter diagram of multiple scheduling schemes for a reservoir under a certain ecological environment level provided by an embodiment of the present invention; Figure 4 A schematic diagram of an ecological water supply process in a simulated scheduling operation provided by an embodiment of the present invention; Figure 5 A technical roadmap for a method for joint dispatching of a group of reservoirs within a river basin based on an ecological water supply target provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0018] The embodiment of the present invention provides a method for joint dispatching of a group of reservoirs in a river basin based on an ecological water supply target, such as Figure 1 As shown, the method includes: S1. According to multiple ecological environment levels, determine the ecological target sequence of each reservoir in the reservoir group of the target river basin at each ecological environment level.

[0019] S1 can specifically include: S11. Based on multiple ecological environment levels, determine the ecological demand sequence of the mainstream of the target watershed under each ecological environment level.

[0020] Specifically, the classification of ecological environment levels is usually determined based on the comprehensive evaluation of multiple ecological indicators, and the values ​​of ecological indicators corresponding to different ecological environment levels are different. For example, ecological indicators may include water resource development and utilization intensity, aquatic habitat disturbance index, vegetation coverage, gully density, important habitat conservation rate, water conservation function index, soil conservation function index, etc. For example, according to the ecological environment from good to bad, the ecological environment level of the basin can be divided into level one, level two, level three, level four, etc.

[0021] Specifically, the ecological demand sequence of the mainstream refers to the time series of the ecological water demand flow of the mainstream during the scheduling period, which is composed of the ecological water demand flow of each scheduling period of the mainstream during the scheduling period. For example, if one year is a scheduling period and one month is a scheduling period, the ecological demand sequence of the mainstream includes the ecological water demand flow of the mainstream in 12 consecutive months.

[0022] Specifically, the ecological water demand flow of the mainstream in a certain scheduling period is the overall ecological water demand flow of the target basin in that scheduling period. In practice, in order to accurately describe the ecological water demand flow of the mainstream, an ecological control section can be set on the mainstream river section after all tributaries merge into the mainstream, and then the ecological flow required by the ecological control section in a certain scheduling period is used as the ecological water demand flow of the mainstream in that scheduling period.

[0023] Specifically, according to the values ​​of ecological indicators corresponding to each ecological environment level, combined with the natural runoff information and actual development situation of the target basin, the ecological flow required by the ecological control section of the target basin in each scheduling period can be calculated under each ecological environment level, that is, the ecological water demand flow of the main stream in each scheduling period. The ecological water demand flow of the main stream in each scheduling period is arranged in chronological order to obtain the ecological demand sequence of the main stream.

[0024] S12. According to the ecological demand sequence of the mainstream at each ecological environment level and the topological relationship of the reservoir group in the target basin, determine the ecological target sequence of each reservoir in the reservoir group in the target basin at each ecological environment level.

[0025] Specifically, the ecological target sequence of a reservoir refers to the time series of the ecological water supply targets of the reservoir during the scheduling period, which is composed of the ecological water supply target flow of each scheduling period in multiple scheduling periods of the reservoir during the scheduling period.

[0026] Specifically, the ecological water supply target flow of a reservoir in a certain scheduling period is the ecological water demand flow of the river section where the reservoir is located in the scheduling period.

[0027] Specifically, the multiple reservoirs in the reservoir group can be respectively set on the main stream and the tributaries, or all the reservoirs can be set on the tributaries, and one or more reservoirs can be set on each tributary. Figure 2 As shown, all reservoirs are located on tributaries, and only one reservoir is located on each tributary. Therefore, in this embodiment, the ecological water supply target flow of a reservoir in a certain scheduling period is the ecological water demand flow of the tributary where the reservoir is located in the scheduling period.

[0028] Specifically, the topological relationship of a reservoir group includes the spatial position relationship, connection method and water flow direction between the reservoirs in the reservoir group. The hydraulic connection between the reservoirs can be determined based on the topological relationship.

[0029] This embodiment uses the ecological demand sequence of the main stream at each ecological environment level, combined with the topological relationship and hydraulic connection of the reservoir group, and the changes in the hydrological situation of the target basin during the scheduling period, and can deduce the ecological water demand flow of each tributary at each scheduling period in the target basin at each ecological environment level through the hydrological statistical analysis method, that is, the ecological water supply target flow of each reservoir at each scheduling period. The ecological water supply target flow of each reservoir at each scheduling period is arranged in chronological order to obtain the ecological target sequence of each reservoir.

[0030] It is worth noting that when some reservoirs in the reservoir group are set on the mainstream, or there are multiple reservoirs on each tributary, the topological relationship of the reservoir group is obviously different from the topological relationship when only one reservoir is set on each tributary. Based on the topological relationship of the reservoir group at this time, the ecological target sequence of each reservoir at this time can also be determined according to the above method.

[0031] S2. Determine the dispatching information of each reservoir in the target basin at each ecological environment level based on the ecological target sequence of each reservoir at each ecological environment level, as well as the conventional target sequence, conventional target guarantee rate and design operation parameters of each reservoir.

[0032] Specifically, reservoirs usually need to undertake multiple routine water supply tasks in daily operation to ensure the water demand of multiple water supply objects, which may include residential water supply tasks, industrial production water supply tasks, and agricultural irrigation water supply tasks, etc. According to the changes in water demand of each water supply object during the scheduling period, the target water supply flow of each routine water supply task in each scheduling period during the scheduling period can be determined, thereby obtaining the target water supply flow time series of each routine water supply task.

[0033] Specifically, the conventional target sequence may include at least two of the following: a life target sequence, a production target sequence, and an agricultural target sequence. The life target sequence is the target water supply flow time sequence of the residential water supply task, the production target sequence is the target water supply flow time sequence of the industrial production water supply task, and the agricultural target sequence is the target water supply flow time sequence of the agricultural irrigation water supply task.

[0034] S2 can specifically include: S21. Based on the ecological target sequence of each reservoir under each ecological environment level, as well as the design operation parameters and conventional target guarantee rate of each reservoir, an ecological water shortage optimization model for the mainstream of the target basin is constructed.

[0035] Specifically, the design operating parameters of the reservoir include the maximum volume, maximum water level, power station output, power generation head, etc. during the normal operation of the reservoir.

[0036] Specifically, the conventional target guarantee rate of a reservoir is the target water supply guarantee rate set by the reservoir for conventional water supply tasks such as residential water supply tasks, industrial production water supply tasks and agricultural irrigation water supply tasks. It can be pre-set according to the water demand of each water user and the scheduling capacity of the reservoir.

[0037] Specifically, the ecological water shortage optimization model of the mainstream can include the ecological water shortage optimization function of the mainstream and the constraints of each reservoir.

[0038] S21 may specifically include: According to the ecological target sequence of each reservoir, the optimization function of ecological water shortage in the mainstream is established; The constraints of each reservoir are established according to the design operation parameters and conventional target guarantee rate of each reservoir, and the constraints constrain the optimization solution process of the ecological water shortage optimization function.

[0039] Specifically, the expression of the optimization function of the ecological water shortage of the mainstream is: (1) In formula (1), It represents the optimal ecological water shortage target of the mainstream during the operation period, that is, the ecological operation target of the reservoir group during the operation period; It indicates the ecological water shortage of the mainstream during the dispatch period; It means that the ecological water shortage of the mainstream reaches the minimum during the dispatch period; Indicates the reservoir under a certain ecological environment level During the scheduling period Target flow rate of ecological water supply; Reservoir in a reservoir group During the scheduling period of ecological water supply flow; Indicates the scheduling period Length of time; represents the total number of scheduling periods within the scheduling period, ; represents the total number of reservoirs in the reservoir group, .

[0040] in, From the reservoir obtained from the ecological target sequence.

[0041] Specifically, the constraints include: 1. Conventional water supply guarantee rate constraints (2) In formula (2), is the water supply guarantee rate of a single reservoir corresponding to a certain conventional water supply task, that is, the ratio of the number of scheduling periods that each reservoir meets the conventional water supply task during the scheduling period to the total number of scheduling periods. It is the regular target guarantee rate for the regular water supply task of the reservoir.

[0042] Specifically, when the reservoir has multiple regular water supply tasks, the reservoir corresponds to multiple water supply guarantee rates and multiple regular target guarantee rates.

[0043] 2. Water balance constraints (3) In formula (3), Reservoir During the scheduling period The real-time volume; Reservoir During the scheduling period The real-time volume; Reservoir During the scheduling period Inbound flow rate; Reservoir During the scheduling period The sum of the conventional water supply flow and the ecological water supply flow; Reservoir During the scheduling period of discharge flow; Indicates the scheduling period Length of time.

[0044] 3. Volume constraints (4) In formula (4), Reservoir During the scheduling period The real-time volume; Reservoir The maximum value of its volume fluctuation range during normal operation can be calculated based on the reservoir The design and operating parameters are determined.

[0045] 4. Water level constraints (5) In formula (5), Reservoir During the scheduling period Real-time water level; Reservoir The maximum value of the water level fluctuation range during normal operation can be calculated based on the reservoir The design and operating parameters are determined.

[0046] 5. Water supply capacity constraints (6) In formula (6), Reservoir During the scheduling period Water supply flows for conventional water supply targets and ecological water supply targets; Reservoir The maximum water supply flow that can be provided for conventional water supply targets and ecological water supply targets can be calculated in the process of solving the ecological water shortage optimization function.

[0047] S22. Construct a water supply optimization model for each reservoir based on the ecological target sequence of each reservoir under each ecological environment level, as well as the design operation parameters and conventional target sequence of each reservoir.

[0048] Specifically, the water supply optimization model may include an ecological water supply optimization function, a conventional water supply optimization function and a power generation optimization function.

[0049] S22 may specifically include: Establish the ecological water supply optimization function of each reservoir according to the ecological target sequence of each reservoir; Establish a conventional water supply optimization function for each reservoir based on the conventional target sequence of each reservoir; The power generation optimization function of each reservoir is established according to the design and operation parameters of each reservoir.

[0050] Specifically, the expression of the ecological water supply optimization function of a single reservoir is: (7) In formula (7), It represents the overall ecological operation target of a single reservoir during the operation period; It represents the total deviation of ecological water supply flow of the reservoir during the dispatch period; It means that the total deviation of ecological water supply flow of the reservoir during the dispatching period is minimized; Indicates that the reservoir is in the dispatching period of ecological water supply flow; Indicates that the reservoir is in the dispatching period Target flow rate of ecological water supply; This indicates that the reservoir is The average value of ecological water supply target flow in each scheduling period; represents the total number of scheduling periods within the scheduling period, ; and is the index parameter.

[0051] in, It can be obtained from the ecological target sequence of the reservoir. and Can be pre-set based on computing requirements.

[0052] Specifically, the ecological water supply optimization function of a single reservoir is based on the reservoir The average value of the ecological water supply target flow in each scheduling period is used to correct the ecological water supply flow of the reservoir in each scheduling period to optimize the ecological water supply process of the reservoir.

[0053] Specifically, the expression of the conventional water supply optimization function of a single reservoir is: (8) In formula (8), It represents the total conventional water supply target of a single reservoir during the dispatch period; It indicates the total water shortage degree of the conventional water supply task of the reservoir during the dispatching period; It means that the total water shortage of the reservoir in the regular water supply task during the dispatch period has reached the minimum; Indicates that the reservoir is in the dispatching period Target water supply flow corresponding to industrial production water supply tasks; Indicates that the reservoir is in the dispatching period of industrial production water supply flow; Indicates that the reservoir is in the dispatching period Target water supply flow corresponding to agricultural irrigation water supply tasks; Indicates that the reservoir is in the dispatching period of agricultural irrigation water supply flow; Indicates that the reservoir is in the dispatching period Target water supply flow corresponding to the task of residential water supply; Indicates that the reservoir is in the dispatching period Residential water supply flow rate; represents the total number of scheduling periods within the scheduling period, ; They respectively represent the weight coefficients of the industrial production water supply task, agricultural irrigation water supply task and residential water supply task.

[0054] in, can be obtained from the regular target sequence of this reservoir, It can be pre-set according to the importance of each routine water supply task to social and economic development.

[0055] Specifically, the expression of the power generation optimization function of a single reservoir is: (9) (10) In formula (9) and formula (10), It represents the total power generation target of a single reservoir during the dispatch period; It represents the total power generation of the reservoir during the dispatch period; It means that the total power generation of the reservoir during the dispatch period reaches the maximum value; Indicates that the reservoir is in the dispatching period Kinetic energy; Indicates the output coefficient of the reservoir; Indicates that the reservoir is in the dispatching period The flow of water for power generation; Indicates that the reservoir is in the dispatching period The generating head; Indicates the scheduling period Length of time; represents the total number of scheduling periods within the scheduling period, .

[0056] in, and All of these can be obtained from the design and operation parameters of the reservoir.

[0057] S23. Determine the dispatching information of each reservoir in the target basin at each ecological environment level based on the ecological water shortage optimization model of the mainstream and the water supply optimization model of each reservoir.

[0058] S23 may specifically include: The multi-objective genetic algorithm is used to analyze the ecological water shortage optimization model and the water supply optimization model to obtain the scheduling information of each reservoir in the target basin under each ecological environment level.

[0059] Specifically, this embodiment uses a multi-objective genetic algorithm to perform parallel joint analysis on the ecological water shortage optimization model and the water supply optimization model, and by transferring scheduling parameters such as ecological water supply flow between the ecological water shortage optimization model and the water supply optimization model, a multi-objective comprehensive optimization is performed on the reservoir group scheduling to obtain the scheduling information of each reservoir under each ecological environment level.

[0060] Specifically, the dispatching information includes the water supply flow sequence corresponding to the ecological target sequence of each reservoir, as well as the water supply guarantee rate and water supply flow sequence corresponding to the conventional target sequence of the reservoir. For reservoirs with power generation tasks, the dispatching information also includes the power generation water flow sequence of the reservoir.

[0061] For example, under a certain ecological environment level, the scheduling information of a reservoir may include the ecological water supply flow, industrial production water supply flow, agricultural irrigation water supply flow, residential water supply flow and power generation water flow of the reservoir in each scheduling period, as well as the water supply guarantee rate of the reservoir corresponding to the industrial production water supply tasks, agricultural irrigation water supply tasks and residential water supply tasks during the scheduling period.

[0062] It is understandable that, at a certain ecological environment level, for a single reservoir, there is a relationship of mutual growth and decline and competition among its ecological water supply flow, industrial production water supply flow, agricultural irrigation water supply flow, residential water supply flow and power generation water supply flow. Therefore, at a certain ecological environment level, a single reservoir can usually obtain multiple sets of dispatching information with different values, but all of which can meet its ecological target sequence, conventional target sequence and conventional target guarantee rate. Different values ​​of dispatching information will result in different ecological water supply, conventional water supply and power generation actually provided by the reservoir during the dispatching period, which can reflect the emphasis of the reservoir on ecological water supply tasks, conventional water supply tasks and power generation tasks.

[0063] For example, under a certain ecological environment level, a reservoir corresponds to multiple groups of dispatching information. The dispatching process corresponding to each group of dispatching information is set as a dispatching scheme. The Pareto scatter diagram of multiple dispatching schemes corresponding to ecological water supply tasks, conventional water supply tasks and power generation tasks is as follows: Figure 3 As shown in the figure, each dot represents a scheduling solution. Figure 3 It can be seen that different scheduling schemes actually provide different ecological water supply, conventional water supply and power generation during the scheduling period.

[0064] S3. Determine the joint dispatching rules for the reservoir group based on the dispatching information, and perform dispatching in accordance with the joint dispatching rules.

[0065] Specifically, this embodiment can obtain multiple joint dispatching schemes for the reservoir group at each ecological environment level and the overall dispatching benefit of each joint dispatching scheme based on multiple groups of dispatching information of each reservoir at each ecological environment level. Decision makers can comprehensively decide to adopt a joint dispatching scheme at a certain ecological environment level based on the overall dispatching benefit of the reservoir group to be achieved and the ecological environment level to be achieved, as well as the importance of ecological water supply tasks, conventional water supply tasks and power generation tasks. The dispatching information of all reservoirs corresponding to the joint dispatching scheme constitutes a joint dispatching rule. This embodiment performs joint dispatching of the reservoir group according to the joint dispatching rule.

[0066] In addition, after the joint dispatching rules are determined, the reservoir group can be simulated and operated according to the long series of hydrological data and the determined joint dispatching rules to evaluate the operating effect of the joint dispatching rules in ecological dispatching.

[0067] For example, this embodiment simulates the operation of the reservoir group according to the selected joint dispatching rules based on the monthly hydrological data and water ecological historical data of a certain river basin from 1956 to 2010, and obtains the simulated operation parameters and water supply efficiency parameters of each reservoir. Then, based on the above parameter pairs, a comprehensive evaluation of the ecological dispatch is conducted from four dimensions: total amount (i.e., the total amount of ecological water supply), process (i.e., the ecological water supply process), time (i.e., the key period of ecological water supply) and space (i.e., the core section of ecological water supply), so as to obtain the operation effect of the joint dispatching rules in ecological dispatching. The ecological water supply process obtained by the simulated dispatching operation in this embodiment is as follows: Figure 4 As shown, it can be seen that after joint scheduling according to the joint scheduling rules, the total ecological water supply increases significantly, indicating that the reservoir group joint scheduling method provided in this embodiment has an obvious optimization effect on ecological scheduling.

[0068] In summary, the technical roadmap of the joint dispatching method of a group of reservoirs in a river basin based on the ecological water supply target provided in this embodiment is as follows: Figure 5 shown.

[0069] The present invention determines the ecological target sequence of each reservoir in the reservoir group of the target river basin based on each ecological environment level, and then determines the scheduling information of each reservoir under each ecological environment level in combination with the conventional target sequence of each reservoir, thereby synergistically ensuring ecological water supply and conventional water supply, achieving a dynamic balance between ecological water supply and conventional water supply, and improving the comprehensive utilization efficiency of water resources and the overall scheduling benefit of the reservoir group.

[0070] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A method for joint dispatching of reservoir groups within a river basin based on ecological water supply objectives, characterized in that: The method comprises: S1. According to multiple ecological environment levels, determine the ecological target sequence of each reservoir in the reservoir group of the target river basin at each ecological environment level; S2. Determine the dispatching information of each reservoir in the target basin at each ecological environment level according to the ecological target sequence, the conventional target sequence, the conventional target guarantee rate and the design operation parameters of each reservoir; S3. Determine the joint dispatching rules of the reservoir group according to the dispatching information, and perform dispatching according to the joint dispatching rules.

2. The method according to claim 1, characterized in that The S2 specifically includes: S21, constructing an ecological water shortage optimization model for the mainstream of the target basin according to the ecological target sequence, the design operation parameters of each reservoir and the conventional target guarantee rate of each reservoir; S22, constructing a water supply optimization model for each reservoir according to the ecological target sequence, the design operation parameters of each reservoir and the conventional target sequence of each reservoir; S23. Determine the dispatching information of each reservoir in the target watershed at each ecological environment level according to the ecological water shortage optimization model and the water supply optimization model.

3. The method according to claim 2, characterized in that The ecological water shortage optimization model includes the ecological water shortage optimization function of the mainstream and the constraint conditions of each reservoir.

4. The method according to claim 3, characterized in that The S21 specifically includes: Establishing an optimization function for ecological water shortage of the main stream according to the ecological target sequence; The constraints of each reservoir are established according to the design operating parameters of each reservoir and the conventional target guarantee rate of each reservoir.

5. The method according to claim 2, characterized in that: The water supply optimization model includes an ecological water supply optimization function, a conventional water supply optimization function and a power generation optimization function.

6. The method according to claim 5, characterized in that The S22 specifically includes: Establishing an ecological water supply optimization function for each reservoir according to the ecological target sequence; Establish a conventional water supply optimization function for each reservoir based on the conventional target sequence of each reservoir; The power generation optimization function of each reservoir is established according to the design and operation parameters of each reservoir.

7. The method according to claim 2, characterized in that The S23 specifically includes: The ecological water shortage optimization model and the water supply optimization model are analyzed by using a multi-objective genetic algorithm to obtain the dispatching information of each reservoir in the target watershed at each ecological environment level.

8. The method according to claim 1, characterized in that The scheduling information includes a water supply flow sequence for each reservoir corresponding to the ecological target sequence and the conventional target sequence.

9. The method according to claim 1, characterized in that: The S1 specifically includes: According to multiple ecological environment levels, determine the ecological demand sequence of the mainstream of the target basin under each ecological environment level; According to the topological relationship between the ecological demand sequence and the reservoir group of the target watershed, the ecological target sequence of each reservoir in the reservoir group of the target watershed at each ecological environment level is determined.

10. The method according to claim 1, characterized in that The conventional target sequence includes at least two of a life target sequence, a production target sequence and an agricultural target sequence.

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