A method for determining operation rules of inter-basin reservoir coordination based on source optimization

Abstract

The present invention belongs to the technical field of inter-basin joint water transfer, and discloses a method for determining inter-basin reservoir joint transfer operation rules based on source optimization, including: determining the discharge volume of the source reservoir and the corresponding discharge process, and determining the water demand of the water transfer reservoir and the corresponding water demand process; determining the reservoir joint water transfer target according to the water volume difference between the discharge volume and the water demand, and the matching difference between the discharge process and the water demand process; constructing a joint water transfer model according to the reservoir joint water transfer target, and determining the joint water transfer operation rules of the source area and the water transfer area reservoir according to the solution of the joint water transfer model. The present invention can coordinate the operation of the source reservoir in the source area and the water transfer reservoir in the water transfer area, and achieve the goal of increasing the water transfer volume of the water transfer system and the reasonable effect of the water transfer process through the joint water transfer of the source area and the water transfer area reservoir, so as to provide a method path and technical support for improving the inter-basin water transfer effect at the source.

Description

Technical Field

[0001] The invention discloses a method for determining inter-basin reservoir joint regulation operation rules based on source optimization, belonging to the technical field of inter-basin joint water regulation. Background Art

[0002] Typical inter-basin water transfer projects usually involve water transfer from a basin with relatively abundant water resources (called a water transfer area) to a basin with scarce water resources (called a receiving area). However, in actual operations, due to the large water demand of the receiving area or the over-exploitation of water resources in the water transfer area, water transfer projects often fail to meet all the water needs of the receiving area. At the same time, climate change or human activities in the basin where the water transfer area is located may further reduce natural runoff, exacerbating the contradiction between supply and demand between the water transfer area and the receiving area. From the perspective of optimizing water resources scheduling, increasing the utilization of existing water resources in the water transfer area to alleviate the demand for inter-basin water transfer projects is often limited, because some inter-basin water transfer projects have limited water resources themselves, and have even shown a trend of continuous reduction. On the other hand, under the premise of ensuring the protection of the water ecological environment, the limited water resources in the receiving area with long-term water shortage need to give priority to ecological water use, which makes it more difficult to continuously meet the water demand of the receiving area. In view of the above problems, increasing the water source of water transfer from the source is a more direct and effective solution.

[0003] Improving the effect of inter-basin water transfer from the source and directly increasing the amount of water transferred is the basis for improving the efficiency of water transfer. However, it is also critical to optimize the water transfer process to ensure that it is accurately connected with the actual needs of users in the water receiving area, thereby improving the water security guarantee ability of water users. Unfortunately, in actual operations, the dynamic changes in the water transfer process are often ignored, and these changes actually have a decisive impact on the stable operation, economy and reliability of the water transfer system. Therefore, in order to improve the effect of inter-basin water transfer from the source, it is of more far-reaching practical significance to coordinate the increase in water transfer volume and the optimization of the water transfer process. As the core component of inter-basin water transfer projects, reservoirs play a vital role in ensuring the water demand of the receiving area by effectively regulating and storing natural runoff. Based on this, improving the effect of inter-basin water transfer from the source must be achieved by relying on the joint water transfer mechanism of reservoir projects in the source area and the water transfer area. Summary of the invention

[0004] The purpose of this application is to provide a method for determining the operation rules of inter-basin reservoir joint regulation based on source optimization, so as to solve the problem that the existing technology for improving the water diversion effect of inter-basin water diversion projects mostly only starts from increasing the water supply in the water diversion area or the water receiving area, but is limited by the restriction of regional water resources, and the improvement of water diversion effect is mostly focused on increasing the water diversion volume, and fails to fully consider the improvement of the water diversion process. To achieve the above purpose, the present invention proposes a method for determining the operation rules of inter-basin reservoir joint regulation based on source optimization to improve the inter-basin water diversion effect. The specific scheme is as follows:

[0005] A method for determining cross-basin reservoir joint operation rules based on source optimization, comprising:

[0006] Step 1: determine the discharge volume of the source reservoir and the corresponding discharge process, and determine the water demand of the water transfer reservoir and the corresponding water demand process;

[0007] Step 2: Determine the joint water transfer target of the reservoirs based on the water volume difference between the discharge volume and the water demand volume, and the matching difference between the discharge process and the water demand process;

[0008] Step 3: construct a joint water transfer model according to the joint water transfer target of the reservoirs, and determine the operation rules of the joint water transfer of the reservoirs in the source area and the water transfer area according to the solution of the joint water transfer model.

[0009] Preferably, the step 3 specifically includes:

[0010] Step 3.1, according to the joint water transfer target of the reservoirs, setting the objective function and constraint conditions of the joint water transfer model of the source reservoir and the water transfer reservoir;

[0011] Step 3.2, solve the joint water transfer model, formulate joint water transfer operation rules according to the solution results, and determine the joint water transfer method between the source reservoir and the water transfer reservoir according to the joint water transfer operation rules.

[0012] Preferably, the joint water transfer target of the reservoirs is specifically:

[0013] The water gap between the discharge volume and the water demand volume is the smallest, and the matching difference between the discharge process and the water demand process is the smallest.

[0014] Preferably, the objective function specifically includes:

[0015] The target of joint water transfer of reservoirs is the largest and the target of joint water transfer process is the best.

[0016] Preferably, the constraints specifically include:

[0017] The water distribution demand constraints of the source reservoir;

[0018] The water transfer reservoir's allocation requirements and hydrological and water conservancy constraints;

[0019] The constraints include water volume balance, storage capacity balance, and water replenishment balance between the source reservoir and the water transfer reservoir.

[0020] Preferably, solving the joint water transfer model specifically includes:

[0021] A multi-objective optimization algorithm is used to solve the multi-objective non-inferior solution set of the joint water diversion model, and an optimal solution is selected from the non-inferior solution set according to preset requirements.

[0022] Preferably, the step 3 further includes:

[0023] Evaluate the joint water diversion effect of reservoirs in the source area and the water diversion area.

[0024] Preferably, the evaluation of the joint water diversion effect of the reservoirs in the source area and the water diversion area specifically includes:

[0025] The joint water transfer effect of the reservoirs in the source area and the water transfer area is evaluated based on the joint water transfer volume and the joint water transfer process.

[0026] Preferably, determining the discharge volume of the source reservoir and the corresponding discharge process specifically includes:

[0027] Step 1.1: According to the distribution of the main and tributary rivers in the source area and the spatial location of the source reservoir, the topological structure of the source area watershed is constructed to obtain the existing river ecological requirements and target water supply demand of the source reservoir;

[0028] Step 1.2 determines the discharge volume of the source reservoir and the corresponding discharge process according to the watershed topology of the source area, the existing river ecological requirements of the source reservoir, and the target water supply demand.

[0029] Preferably, determining the water demand of the water transfer reservoir and the corresponding water demand process specifically includes:

[0030] Step 1.3: Based on the distribution of the main and tributary rivers in the water diversion area and the spatial location of the water diversion reservoir, the watershed topological structure of the water diversion area is constructed to obtain the existing river ecological requirements and hydrological and water conservancy relations of the water diversion reservoir;

[0031] Step 1.4 Determine the water demand of the water transfer reservoir and the corresponding water demand process based on the watershed topology of the water transfer area, the existing river ecological requirements of the water transfer reservoir, and its hydrological and hydraulic relations.

[0032] Compared with the prior art, the present invention has the following beneficial effects: the present invention can coordinate the operation of the source reservoir in the source area and the water diversion reservoir in the water diversion area, and through the joint water diversion of the source area and the water diversion area reservoirs, achieve the goal of increasing the water diversion volume of the water diversion system and achieving reasonable effects of the water diversion process, providing a method path and technical support for improving the cross-basin water diversion effect at the source. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a flow chart of a method for determining water transfer rules for inter-basin reservoirs in an embodiment of the present invention;

[0034] Figure 2 This is a topological structure diagram of the source area and the water diversion area in the second embodiment of the present invention;

[0035] Figure 3 This is a diagram of the joint water transfer operation of source reservoir 1 and source reservoir 2 in the source area in the second embodiment of the present invention, wherein (a) is a schematic diagram of the operation of source reservoir 1 in the joint water transfer operation, and (b) is a schematic diagram of the operation of source reservoir 2 in the joint water transfer operation. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1

[0038] See also Figure 1 As shown, the purpose of this embodiment is to provide a method for determining the operation rules of inter-basin reservoir joint water transfer based on source optimization, including: step 1, determining the discharge volume of the source reservoir and the corresponding discharge process, and determining the water demand of the water transfer reservoir and the corresponding water demand process;

[0039] Among them, determining the discharge volume of the source reservoir and the corresponding discharge process specifically includes: step 1.1, constructing the source area basin topology structure according to the distribution of the main and tributary rivers in the source area and the spatial location of the source reservoir, and obtaining the existing river ecological requirements and target water supply needs of the source reservoir; step 1.2 determining the discharge volume and the corresponding discharge process of the source reservoir according to the source area basin topology structure and the existing river ecological requirements and target water supply needs of the source reservoir.

[0040] In this embodiment, the source area basin topology structure is mainly based on the distribution of the main and branch lines of the river system in the source area from the hydrological perspective, and the spatial location of the reservoir projects that have been built, under construction or planned in the basin where the source area is located, to construct the source area basin topology structure that can characterize the positional relationship and water supply connection between the river system and the source reservoir. To determine the water discharge volume and water discharge process (i.e., discharge volume and discharge process) of the source reservoir, firstly, it is necessary to determine the appropriate source reservoir according to the source area basin topology structure form and the location and size of the reservoir in the source area, and then analyze the existing river ecological requirements and target water supply requirements of each source reservoir, and finally calculate the water discharge volume and corresponding discharge process of the source reservoir. Among them, the target water supply demand specifically refers to various users or entities that need to be provided with water by the source reservoir to meet their water needs. It should be understood that according to the specific practical application, it may also be necessary to analyze the hydrological and water conservancy relationship between each source reservoir.

[0041] Among them, determining the water demand of the water transfer reservoir and the corresponding water demand process specifically includes: step 1.3, constructing the watershed topological structure of the water transfer area according to the distribution of the main and tributary rivers in the water transfer area and the spatial location of the water transfer reservoir, and obtaining the existing river ecological requirements and hydrological and water conservancy relations of the water transfer reservoir; step 1.4 determining the water demand of the water transfer reservoir and the corresponding water demand process according to the watershed topological structure of the water transfer area and the existing river ecological requirements and hydrological and water conservancy relations of the water transfer reservoir.

[0042] In this embodiment, the watershed topology of the water diversion area is mainly based on the distribution of the main and branch lines of the water diversion area water system from the hydrological perspective, as well as the spatial location of the reservoir projects that have been built, under construction or planned in the watershed where the water diversion area is located, to construct a water diversion area watershed topology that can characterize the positional relationship and water supply connection between the river system and the water diversion reservoir. In this embodiment, to determine the water demand and process demand (i.e., water demand and water demand process) of the water diversion reservoir, first, according to the water diversion area watershed topology, it is necessary to clarify the position and scale of the water diversion reservoir in the water diversion area, and then analyze the existing river ecological requirements, hydrological and water conservancy relations and external water demand of each water diversion reservoir, and finally calculate the water demand and process demand of the water diversion reservoir. The hydrological and water conservancy relationship is specifically the hydrological and water conservancy relationship between each water diversion reservoir when each water diversion reservoir supplies water to the outside. External water demand is specifically the external required water volume and corresponding water demand process when the inter-basin reservoir joint water diversion of the present invention supplies water to the outside.

[0043] Step 2: Determine the joint water transfer target of the reservoirs based on the water volume difference between the discharge volume and the water demand volume, and the matching difference between the discharge process and the water demand process;

[0044] Furthermore, the joint water transfer objectives of the reservoirs are as follows: minimizing the water gap between the discharge volume and the water demand volume and minimizing the matching difference between the discharge process and the water demand process.

[0045] Specifically, in this embodiment, the joint water transfer target includes the water gap between the water discharge volume and the water demand, and the process gap between the water discharge process and the process demand. Under the current operating conditions of the source area reservoir, the water discharge volume and water discharge process of the source area reservoir are calculated to meet the river ecological requirements and the target water supply requirements; under the current operating conditions of the water transfer area reservoir, the water demand and process demand of the water transfer reservoir are calculated after meeting the hydrological and water conservancy relationship conditions of the water transfer area reservoir and meeting the river ecological requirements; according to the water discharge volume and water discharge process of the source area reservoir, and the water demand and process demand of the water transfer area reservoir, the difference between the two is statistically calculated, and the water gap and process gap between the two are identified. These gaps constitute the joint water transfer target. Specifically, the water volume target reflects the difference between the water volume that the source area reservoir can provide and the water volume required by the water transfer area reservoir, while the process target reveals the mismatch in time of the water discharge process.

[0046] Step 3: Construct a joint water transfer model based on the joint water transfer target of the reservoirs, and determine the joint water transfer operation rules of the reservoirs in the source area and the water transfer area based on the solution of the joint water transfer model.

[0047] Furthermore, step 3 specifically includes:

[0048] Step 3.1, according to the joint water transfer target of the reservoirs, set the objective function and constraint conditions of the joint water transfer model of the source reservoir and the water transfer reservoir;

[0049] Furthermore, the objective function specifically includes: maximizing the target of the joint water transfer volume of the reservoirs and optimizing the target of the joint water transfer process.

[0050] Specifically, in this embodiment, the maximum water volume target of the objective function is the maximum combined water transfer volume, and the objective function expression is as follows:

[0051] (1)

[0052] In the formula, is the maximum objective function of the joint water transfer volume of the reservoirs, and the water transfer volume in the source area Water transfer volume in water transfer area Composition, among which, is the number of source reservoirs in the source area, The number of water diversion reservoirs in the water diversion area.

[0053] Specifically, in this embodiment, the objective function process objective is the best when the number of joint water transfer processes is the largest. The objective function expression is as follows:

[0054] (2)

[0055] In the formula, In order to meet the maximum number of objective functions in the joint water transfer process, the joint water transfer amount and process requirements Discrimination counter between Statistical acquisition; when the combined water transfer volume Equal to process requirements When the counter The cumulative count is 1, and when the combined water transfer volume Less than process requirements When the counter Not counting, among which, is the total number of discretized time periods in the joint water diversion process.

[0056] Furthermore, the constraints specifically include: water distribution demand constraints of the source reservoir; water allocation demand and hydrological and water conservancy relationship constraints of the water transfer reservoir; water volume balance, storage capacity balance, and water replenishment balance between the source reservoir and the water transfer reservoir.

[0057] Specifically, in this embodiment, the constraints of the joint water transfer model of the source area and the water transfer area are divided into two categories: water balance constraints and actual operation constraints:

[0058] Specifically, in this embodiment, the water balance constraint expression is as shown in equations (3), (4), and (5):

[0059] (3)

[0060] In the formula, For a certain running time The combined water transfer volume, and Distribution for this period The amount of water diverted by the source reservoir and the amount of water diverted by the diversion reservoir.

[0061] (4)

[0062] In the formula, The source reservoir is in a certain operation period The storage capacity value, The source reservoir was in operation during the previous period The storage capacity value, They are respectively the inflow volume of the source reservoir, the ecological requirements of the river channel, the target water supply, and the water loss during reservoir operation.

[0063] (5)

[0064] In the formula, To adjust the water flow of the reservoir during a certain period of operation The storage capacity value, For the water transfer reservoir in the previous operation period The storage capacity value, They are respectively the inflow volume of the water diversion reservoir, the river ecological requirements, and the water loss during reservoir operation.

[0065] Specifically, in this embodiment, the actual operation constraint expressions are as follows:

[0066] (6)

[0067] (7)

[0068] In the formula, are the source reservoir and the water transfer reservoir in a certain operation period The water level value, They are respectively the minimum and maximum water levels allowed for the source reservoir and the minimum and maximum water levels allowed for the water transfer reservoir. During actual operation, both the source reservoir and the water transfer reservoir should be subject to their own water level constraints.

[0069] (8)

[0070] In the formula, , The source reservoir is respectively For the water supply and water demand of the existing object, the source reservoir should give priority to meeting the water supply demand constraints of the existing object during actual operation.

[0071] (9)

[0072] In the formula, For water transfer reservoir and During a certain running period The hydrological and water conservancy relations between them, For water transfer reservoir and The maximum capacity of the hydrological and water conservancy relationship between each other. During actual operation, the water diversion reservoirs should meet the constraints of the hydrological and water conservancy relationship between each other.

[0073] Step 3.2, solve the joint water transfer model, formulate joint water transfer operation rules based on the solution results, and determine the joint water transfer method between the source reservoir and the water transfer reservoir based on the joint water transfer operation rules.

[0074] Furthermore, solving the joint water transfer model specifically includes:

[0075] A multi-objective optimization algorithm is used to solve the multi-objective non-inferior solution set of the joint water diversion model, and the optimal solution is selected from the non-inferior solution set according to preset requirements.

[0076] Specifically, in this embodiment, the multi-objective optimization algorithm used is the collaborative particle swarm optimization algorithm (CPSO). The objective function and constraints can be classified into two modules: the source reservoir and the water transfer reservoir. The collaborative particle swarm algorithm can be used to collaboratively complete the parallel solution of the two modules of the source reservoir and the water transfer reservoir. First, the joint water transfer model is parameterized, and the storage capacity of the source reservoir and the water transfer reservoir is selected as the decision variable; secondly, the long series of hydrological data is discretized to determine the calculation step size of the model solution, and the collaborative particle swarm algorithm is used to solve multiple non-inferior solutions that meet the objective function of the joint water transfer model and meet the constraints, which are recorded as the multi-objective non-inferior solution set of the joint water transfer model; finally, according to the preset requirements, a suitable optimal solution is selected from the multi-objective non-inferior solution set. Usually the preset requirements are determined according to the decision maker's preferences.

[0077] Specifically, in this embodiment, after selecting a suitable optimal solution, the long series of storage capacity changes and water diversion processes corresponding to the source reservoir and the water diversion reservoir when the optimal solution is obtained are analyzed, and the water diversion performance and operation relationship between the reservoirs in the source area and the water diversion area are analyzed. The operation mode of the source reservoir and the water diversion reservoir is determined according to the water diversion process and operation relationship, thereby formulating the joint water diversion operation rules of the reservoirs in the source area and the water diversion area. In actual applications, the specific reservoir joint water diversion method is determined according to the joint water diversion operation rules.

[0078] Furthermore, after step 3, it also includes: evaluating the joint water transfer effect of the reservoirs in the source area and the water transfer area.

[0079] Furthermore, evaluating the joint water transfer effect of the reservoirs in the source area and the water transfer area specifically includes: evaluating the joint water transfer effect of the reservoirs in the source area and the water transfer area according to the joint water transfer volume and the joint water transfer process.

[0080] Specifically, in this embodiment, according to the joint water transfer operation rules of the reservoirs in the source area and the water transfer area, a long series of hydrological data is selected to complete the joint water transfer operation of the reservoirs in the source area and the water transfer area, and the joint water transfer results are statistically analyzed, including the joint water transfer volume and the water transfer process. A comparative analysis is made between the increase in the joint water transfer volume and the rationality of the water transfer process, so as to comprehensively evaluate and improve the inter-basin water transfer effect, and the weight method can be used for specific evaluation.

[0081] Embodiment 2

[0082] Specifically, in this embodiment, the water diversion area and source area of ​​a large inter-basin water diversion project HW in my country are taken as an example to illustrate the method for determining the joint water diversion operation rules for improving the inter-basin water diversion effect from the source. In this embodiment, according to the distribution of the main and tributary rivers in the source area and the water diversion area, as well as the spatial locations of the source reservoir 1 and the source reservoir 2, the water diversion reservoir 1, and the water diversion reservoir 2, the water basin topology structure of this embodiment is constructed, such as Figure 2 shown.

[0083] In this embodiment, the source reservoir 1 and the source reservoir 2 constructed on the main and tributary rivers in the source area have different ecological requirements for different river channels and their respective water supply needs. Specifically, the target water supply demand of the source reservoir in this embodiment is to supply water to water users, and the discharge volume and corresponding water release process of the source reservoir 1 and the source reservoir 2 are calculated. Due to the restrictions on the development and utilization of water resources in the section where the river is located, the water transfer reservoir 1 and the water transfer reservoir 2 in the water transfer area are considered. The different river channel ecological requirements of the main and tributary rivers where they are located, as well as the hydrological and water conservancy relationship between the two, it is calculated that the water transfer volume in the water transfer area is small and the actual water transfer process is not good, which cannot meet the water volume demand and process demand of water transfer. In this embodiment, the basic characteristics of the reservoirs in the source area and the water transfer area are shown in Table 1.

[0084] Table 1: Basic characteristics of reservoirs in the source area and water diversion area

[0085]

[0086] According to the method of improving the effect of inter-basin water transfer at the source of the invention, specifically, in this embodiment, the water discharge volume and water discharge process of the source reservoir 1 and the source reservoir 2 are analyzed, the water volume demand and process demand of the water transfer reservoir 1 and the water transfer reservoir 2 are compared, and the joint water transfer target is determined. Based on the joint water transfer target, the joint water transfer operation of the source reservoir 1 and the source reservoir 2 in the source area and the water transfer reservoir 1 and the water transfer reservoir 2 in the water transfer area is carried out. First, a joint water transfer model of the four reservoirs in the source area and the water transfer area is established; secondly, a collaborative particle swarm algorithm is used to calculate the storage capacity of the above four reservoirs during the period as the collaborative particle swarm optimization variable, follow the collaborative particle swarm operation principle, cyclically update the global and individual optimal solutions, and finally obtain the model non-inferior solution set according to the convergence criterion. Specifically, the parameters of the collaborative particle swarm are selected as 500 evolution generations, 0.5 inertia weight, and 1.8 and 2.0, respectively. Finally, the appropriate optimal solution is selected based on the decision maker's preferences, such as the largest increase in water transfer volume, the best water transfer process, and both good water transfer volume and water transfer process.

[0087] In this embodiment, the operation process of the source reservoir 1 and the source reservoir 2 in the source area and the water transfer reservoir 1 and the water transfer reservoir 2 in the water transfer area are analyzed under the selected appropriate optimal solution conditions, so as to further determine the joint dispatching operation mode of the above four reservoirs and formulate the joint water transfer operation rules of the reservoirs. Figure 3 shown.

[0088] In order to evaluate the improvement of inter-basin water transfer effects, this embodiment selected a long series of hydrological data at the ten-day scale from 1956 to 2010. According to the above-mentioned reservoir joint water transfer operation rules, the joint water transfer operation of the four reservoirs in the source area and the water transfer area was completed. The joint water transfer results were compared and statistically analyzed for the joint water transfer volume and water transfer process, as shown in Table 2.

[0089] Table 2: Comparison of inter-basin water transfer effects from source improvement

[0090]

[0091] As can be seen from Table 2, only the water transfer reservoirs in the water transfer area are in operation, with an average annual water transfer volume of 1.35 billion m 3 When the source reservoirs in the source area participate in the joint water transfer, the average water transfer volume over the years is 1.496 billion m 3 The increase in water transfer volume is 140 million m 3 . Secondly, from the statistics of the number of periods of dissatisfaction in the water diversion process, only the water diversion reservoirs in the water diversion area are in operation, and the number of periods of dissatisfaction in water diversion is 78. After the source reservoirs in the source area participate in the joint water diversion, the number of periods of dissatisfaction in the water diversion process is reduced to 23, and the improvement accounts for 70.5%. It can be seen that the method of improving the inter-basin water diversion effect at the source adopted in this embodiment can effectively increase the joint water diversion volume, optimize the joint water diversion process, and significantly improve the inter-basin water diversion effect.

[0092] The present invention discloses a method for determining the joint operation rules of inter-basin reservoirs based on source optimization. First, according to the distribution of the main and tributary rivers of the river system in the source area, as well as the river ecological requirements and the target water supply demand, the water discharge volume and water discharge process of the source reservoir are initially determined; secondly, according to the distribution of the main and tributary rivers of the river system in the water transfer area, as well as the river ecological requirements and the hydrological and water conservancy relationship, the water demand and process demand of the water transfer reservoir are initially determined; finally, the water discharge volume and water demand, the water discharge process and process demand are compared to determine the joint water transfer target, establish a reservoir joint water transfer model, formulate joint water transfer operation rules, carry out joint water transfer operation of the source area and the water transfer area, and evaluate and improve the inter-basin water transfer effect. The present invention can coordinate the operation of the source reservoir in the source area and the water transfer reservoir in the water transfer area, and achieve the goal of increasing the water transfer volume of the water transfer system and the reasonable effect of the water transfer process through the joint water transfer of the reservoirs in the source area and the water transfer area, so as to provide a method path and technical support for improving the inter-basin water transfer effect at the source.

[0093] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for determining cross-basin reservoir joint operation rules based on source optimization, characterized in that: include: Step 1: determine the discharge volume of the source reservoir and the corresponding discharge process, and determine the water demand of the water transfer reservoir and the corresponding water demand process; Step 2: Determine the joint water transfer target of the reservoirs based on the water volume difference between the discharge volume and the water demand volume, and the matching difference between the discharge process and the water demand process; The specific objectives of the joint water transfer of the reservoirs are: The water gap between the discharge volume and the water demand volume is the smallest, and the matching difference between the discharge process and the water demand process is the smallest; Step 3: construct a joint water transfer model according to the joint water transfer target of the reservoirs, and determine the joint water transfer operation rules of the reservoirs in the source area and the water transfer area according to the solution of the joint water transfer model.

2. The method for determining the inter-basin reservoir joint operation rules according to claim 1 is characterized in that: The step 3 specifically includes: Step 3.1, according to the joint water transfer target of the reservoirs, setting the objective function and constraint conditions of the joint water transfer model of the source reservoir and the water transfer reservoir; Step 3.2, solve the joint water transfer model, formulate joint water transfer operation rules according to the solution results, and determine the joint water transfer method between the source reservoir and the water transfer reservoir according to the joint water transfer operation rules.

3. The method for determining the inter-basin reservoir joint operation rules according to claim 2 is characterized in that: The objective function specifically includes: The target of joint water transfer of reservoirs is the largest and the target of joint water transfer process is the best.

4. The method for determining the inter-basin reservoir joint operation rules according to claim 2 is characterized in that: The constraints specifically include: The water distribution demand constraints of the source reservoir; The water transfer reservoir's allocation requirements and hydrological and water conservancy constraints; The constraints include water volume balance, storage capacity balance, and water replenishment balance between the source reservoir and the water transfer reservoir.

5. The method for determining the inter-basin reservoir joint operation rules according to claim 2 is characterized in that: Solving the joint water transfer model specifically includes: A multi-objective optimization algorithm is used to solve the multi-objective non-inferior solution set of the joint water diversion model, and a superior solution is selected from the non-inferior solution set according to preset requirements.

6. The method for determining the inter-basin reservoir joint operation rules according to claim 1 is characterized in that: After step 3, the following steps are also included: Evaluate the joint water diversion effect of reservoirs in the source area and the water diversion area.

7. The method for determining the inter-basin reservoir joint operation rules according to claim 6 is characterized in that: The evaluation of the joint water diversion effect of reservoirs in the source area and the water diversion area specifically includes: The joint water transfer effect of the reservoirs in the source area and the water transfer area is evaluated based on the joint water transfer volume and the joint water transfer process.

8. The method for determining the inter-basin reservoir joint operation rules according to claim 1 is characterized in that: Determine the discharge volume of the source reservoir and the corresponding discharge process, including: Step 1.1: According to the distribution of the main and tributary rivers in the source area and the spatial location of the source reservoir, the topological structure of the source area watershed is constructed to obtain the existing river ecological requirements and target water supply demand of the source reservoir; Step 1.2 determines the discharge volume of the source reservoir and the corresponding discharge process according to the watershed topology of the source area, the existing river ecological requirements of the source reservoir, and the target water supply demand.

9. The method for determining the inter-basin reservoir joint operation rules according to claim 1 is characterized in that: Determine the water demand of the water transfer reservoir and the corresponding water demand process, including: Step 1.3: Based on the distribution of the main and tributary rivers in the water diversion area and the spatial location of the water diversion reservoir, the watershed topological structure of the water diversion area is constructed to obtain the existing river ecological requirements and hydrological and water conservancy relations of the water diversion reservoir; Step 1.4 Determine the water demand of the water transfer reservoir and the corresponding water demand process based on the watershed topology of the water transfer area, the existing river ecological requirements of the water transfer reservoir, and its hydrological and hydraulic relations.

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