Cross-basin reservoir group multi-target joint scheduling graph compilation method and device

Abstract

The invention relates to the technical field of reservoir engineering design, and discloses a method and a device for compiling a multi-target joint scheduling graph of a cross-basin reservoir group. The method comprises the following steps: acquiring basic data related to a cross-basin reservoir group, and determining a limited water supply requirement, a water supply task and a water supply guarantee rate of each water use object according to the basic data and related specifications; calculating a limited water supply line, a breakage-proof line and a boundary scheduling line; and forming an aggregation reservoir scheduling graph by the limited water supply line, the boundary scheduling line, the breakage-proof line, the corresponding dead water level, the normal water level and the flood control water level, and carrying out runoff regulation calculation on the basis of the scheduling graph to check whether the requirements of limited water supply, water supply tasks and water supply guarantee rate of the water use object are met or not. The method is suitable for the cross-basin series reservoir group with the large upstream reservoir scale and the small downstream reservoir scale, the cross-basin reservoir multi-target joint scheduling graph is compiled, the reservoir operation scheduling mode can be guided, and the water supply benefit of the reservoir group is optimal.

Description

Technical Field

[0001] The present invention relates to the technical field of reservoir engineering design, and in particular to a method and device for compiling a multi-objective joint dispatching diagram for a group of reservoirs across river basins. Background Art

[0002] With rapid socioeconomic development, water demand for industrial and agricultural uses, urban and rural domestic needs, and river ecosystems is increasing rapidly. To improve regional water resource security, fully tap the water supply potential of reservoirs, and ensure high-quality regional socioeconomic development, reservoir interconnection projects are gaining increasing attention. Reservoir interconnection projects change the original reservoir operation methods, altering both inflow conditions and water demand, necessitating the redesign of reservoir group operation methods and the compilation of reservoir group operation diagrams.

[0003] For reservoir interconnection projects with comprehensive utilization tasks, the reservoir capacity and water volume should be reasonably allocated to coordinate the priorities of the tasks and the water volume, water level and water use time requirements of different tasks. The cross-basin reservoir operation involves the interests of multiple regions and departments, and coordination is required in terms of water resource allocation, project construction and operation management. However, due to the different development needs and interests of different regions, coordination work often faces great difficulties and is prone to conflicts and disputes. For reservoirs involving cross-administrative regions, after reaching a consensus on the reservoir water supply principles, compiling a joint operation map for the reservoir group is an effective measure to scientifically allocate water and avoid water rights disputes. Summary of the Invention

[0004] In view of this, the present invention provides a method and device for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group to solve the problem of how to make multi-objective water supply decisions for a cross-basin reservoir group.

[0005] In a first aspect, the present invention provides a method for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group, the method comprising:

[0006] Obtain basic data on inter-basin reservoir groups, including larger upstream reservoirs and smaller downstream reservoirs;

[0007] Determine the restricted water supply requirements, water supply tasks and water supply guarantee rate for each water user based on the basic data and relevant specifications;

[0008] Based on the preset water supply reduction task, a long series of water supply reduction processes is determined, and reverse time-series runoff regulation calculations are performed to obtain the upper envelope of the water level in the preset time period as the limiting water supply line;

[0009] Based on the initial dispatching diagram formed by the restricted water supply line and the normal water level, flood limit water level, and dead water level of the reservoir, the runoff regulation calculation is performed in reverse order according to the initial dispatching diagram to obtain the anti-destruction line;

[0010] Based on the water supply guarantee rate of each water user, a water supply series is formed to perform reverse time sequence adjustment calculation, and the upper envelope of the water level in the preset time period is taken as the boundary scheduling line;

[0011] The restricted water supply line, boundary scheduling line, anti-destruction line and corresponding dead water level, normal water level and flood limit water level are combined into an aggregated reservoir scheduling diagram, and runoff regulation calculation is performed based on the scheduling diagram to check whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

[0012] The method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group provided in an embodiment of the present invention uses a long series of runoff and water demand results for calculation, which reduces the dimension of complex multi-objective decision-making problems. The calculation results are accurate and can guide the reservoir operation scheduling mode to optimize the water supply efficiency of the reservoir group.

[0013] In an optional embodiment, the obtaining of basic data related to cross-basin reservoirs includes:

[0014] Obtain rainfall, evaporation, and runoff data within a preset historical time period in the collated area;

[0015] Predicting socio-economic development and population data in the water supply area to formulate water quotas, calculate urban and rural domestic and industrial water demand, and obtain urban and rural water demand process lines;

[0016] According to the relevant agricultural development plan of the water supply area, the third national land survey and topographic data, the designed irrigation area and planting structure of the reservoir irrigation area are determined, the agricultural irrigation water demand is calculated, and the agricultural irrigation water demand process line is obtained;

[0017] Calculate the ecological water demand of the river downstream of the reservoir based on the river type, the intensity of water resources development and utilization in the basin, and relevant environmental protection requirements to obtain the ecological water demand process line;

[0018] The reservoir capacity curve is calculated based on the measured topographic map, including the dead storage capacity of the reservoir, the storage capacity between the dead water level and the flood limit water level, the storage capacity between the flood limit water level and the normal water level, and the storage capacity between the normal water level and the verification water level.

[0019] By acquiring relevant basic information about the reservoir water supply area, the embodiment of the present invention can grasp the actual storage capacity changes of the reservoir and the industrial layout and economic development status of the water supply area, thereby better coordinating the relationship between the reservoir water supply and the needs of water users, and laying a good data foundation for achieving the optimal water supply efficiency of the reservoir group.

[0020] In an optional embodiment, determining the restricted water supply requirements, water supply tasks, and water supply guarantee rate of each water user based on the basic data and relevant specifications includes:

[0021] Based on relevant standards and in combination with actual conditions, determine the water supply guarantee rates and allowable damage depths for urban and rural water demand, agricultural irrigation water demand, and ecological water demand. Based on the water supply guarantee rates and water demand of each water user, calculate the different guarantee rates for different water users into a single object and water supply guarantee rate.

[0022] The natural runoff, urban and rural water demand, agricultural irrigation water demand and ecological water demand process lines are added together as the basic data for the calculation input of aggregated reservoir runoff regulation;

[0023] Merge the dead storage capacity of the two reservoirs, the storage capacity between the dead water level and the flood limit water level, the combined storage capacity between the flood limit water level and the normal water level, and the storage capacity curves between the normal water level and the check water level to generalize the aggregated reservoir storage capacity curve;

[0024] In view of the primary and secondary relationship of water supply tasks, combined with relevant laws, regulations and specifications, the reservoir benefit scheduling principles are formulated, and according to the reservoir flood control scheduling needs, the reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season are clarified. Based on the above-mentioned benefit scheduling principles, reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season and the aggregated reservoir capacity curve, the restricted water supply requirements and water supply tasks are determined.

[0025] The embodiment of the present invention obtains multi-objective requirements for the scheduling of cross-basin reservoirs by analyzing and processing basic data, thereby achieving the multi-objective requirements through water scheduling.

[0026] In an optional embodiment, the method of converting different water user guarantee rates into a single water user guarantee rate based on the water supply guarantee rate and water demand of each water user includes:

[0027] The water supply guarantee rate of each water user is unified according to the historical guarantee rate. The ratio of the water demand of each water user to the total water demand is used as the weight, and the ratio is multiplied by the corresponding guarantee rate to obtain the sum. The different guarantee rates of different water supply objects are converted into a single object and water supply guarantee rate, which is calculated using the following formula:

[0028] P 化算 =W 城乡 / W 总 *P 城乡 +W 灌溉 / W 总 *P 灌溉 +W 生态 / W 总 *P 生态 ,

[0029] Among them, P 化算 The guarantee rate (%) of a single water supply task is calculated for multiple objectives and used as the water supply guarantee rate for the reservoir scale; W 城乡 is the urban and rural water demand (10,000 m 3 );W灌溉 The water demand for agricultural irrigation (10,000 m 3 );W 生态 The water demand of ecological environment (10,000 m 3 );W 总 is the total water demand (10,000 m 3 );P 城乡 The urban and rural water supply guarantee rate (%); P 灌溉 Water supply guarantee rate for agricultural irrigation (%); P 生态 It is the ecological water supply guarantee rate (%).

[0030] In an embodiment of the present invention, multi-objective calculations are processed with dimensionality reduction, and different guarantee rates for different water supply objects are calculated as a single object and guarantee rate, and this data is subsequently used to deduce the scale of the reservoir.

[0031] In an optional embodiment, after the step of forming a water supply series based on the water supply guarantee rate of each water user and performing reverse time sequence adjustment calculation, and taking the upper envelope of the water level in a preset time period as the boundary scheduling line, the method further includes:

[0032] Based on the decision maker's requirements, the boundary scheduling lines are partially adjusted, and the principle of adjustment is that the scheduling lines do not cross each other.

[0033] In an optional embodiment, determining a long series of water supply reduction processes based on a preset water supply reduction task, and performing reverse time-series runoff regulation calculations to obtain an upper envelope of the water level in a preset time period as a limiting water supply line includes:

[0034] Multiply the water-using object by the water supply reduction coefficient and add it to the ecological base flow in different periods to obtain a long series of water supply reduction processes, where the water supply reduction coefficient = 1-allowable damage depth;

[0035] The calculation unit is month or ten days, the last period of the last calculation unit i of the long series of water supply reduction process is used as the starting period, and the dead storage capacity and the corresponding water surface area are used as the basis to calculate the reservoir evaporation and leakage loss W. 损，i , determine the difference W between the natural water supply and reservoir water loss of calculation unit i 天，i -W 损，i and reduce the water supply process W 降，i The minimum value of the two is taken as the reservoir water supply W of calculation unit i 供，i , the calculation formula is W 供，i =min(W 天，i -W 损，i , W 降，i ); Then judge the surplus and shortage status of the reservoir, if the natural water W of the calculation unit i 天，i -W 损，i Greater than or equal to the reduced water supply W of calculation unit i 降，i, then calculate the remaining water volume W of the reservoir in unit i 余，i =W 天，i -W 损，i -W 降，i , reservoir water shortage W 缺，i =0; otherwise, calculate the remaining water volume W of the reservoir in unit i 余，i =0, reservoir water shortage W 缺，i =W 降，i +W 损，i -W 天，i ;

[0036] After judging the surplus or shortage status of the reservoir in calculation unit i, the dead water level is used as the starting water level Z for the end of the month or ten-day period of calculation unit i. 末，i , dead storage capacity is used as the calculation unit i month or end of ten-day period to adjust storage capacity V 末，i , calculate the water loss W of the calculation unit 损，i , then according to the formula V 初，i =max(V 末，i +W 缺，i -W 余，i , V 死 ) Calculate the monthly or ten-day storage capacity V for the calculation period 初，i , and calculate the corresponding Z 初，i , the max function in the formula is intended to indicate that the storage capacity of the reservoir cannot be lower than the dead storage capacity;

[0037] V 末，i-1 =V 初，i , calculate the reservoir evaporation and leakage loss W 损，i-1 The required reservoir capacity and water surface area data are taken as the average of the two calculation units. The above method is repeated until the calculation reaches the end of the initial calculation unit. The upper envelope of the water level at the beginning of the month or ten days in each calculation unit is taken as the limiting water supply line.

[0038] The embodiment of the present invention uses reverse chronological calculation to work backwards from a certain moment in the future, fully considering the changing trend of water demand and the uncertainty of water supply conditions. The restricted water supply line determined in this way can more accurately regulate water supply, avoid excessive water supply when it is not necessary, and thus improve the utilization efficiency of water resources.

[0039] In a second aspect, the present invention provides a device for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group, the device comprising:

[0040] A basic data acquisition module is used to obtain basic data related to a cross-basin reservoir group, wherein the cross-basin reservoir group includes a larger upstream reservoir and a smaller downstream reservoir;

[0041] A water supply demand determination module is used to determine the restricted water supply requirements, water supply tasks and water supply guarantee rate of each water user based on the basic information and relevant specifications;

[0042] The water supply limit calculation module is used to determine a long series of water supply reduction processes based on a preset water supply reduction task, and perform reverse time-series runoff regulation calculations to obtain the upper envelope of the water level in the preset time period as the water supply limit;

[0043] The anti-destruction line calculation module is used to perform reverse-time runoff regulation calculations based on the initial scheduling diagram formed by the restricted water supply line and the normal water level, flood limit water level, and dead water level of the reservoir to obtain the anti-destruction line;

[0044] The boundary scheduling line calculation module is used to supply water to users with relatively high water supply guarantee rates normally, while limiting water supply to other users. The water supply series is composed and reverse time sequence adjustment calculation is performed. The upper envelope of the water level in the preset time period is taken as the boundary scheduling line;

[0045] The aggregated reservoir scheduling diagram generation module combines the restricted water supply line, boundary scheduling line, anti-destruction line and corresponding dead water level, normal water level and flood limit water level into an aggregated reservoir scheduling diagram, and performs runoff regulation calculation based on the scheduling diagram to verify whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

[0046] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to execute the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group according to the first aspect or any corresponding embodiment thereof.

[0047] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, and the computer instructions are used to enable a computer to execute the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group according to the first aspect or any corresponding embodiment thereof.

[0048] In a fifth aspect, the present invention provides a computer program product comprising computer instructions, which are used to enable a computer to execute the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 1 is a flow chart of a method for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group according to an embodiment of the present invention;

[0051] Figure 2 is a schematic diagram of various water level lines of a reservoir according to an embodiment of the present invention;

[0052] Figure 3 is a schematic diagram of an aggregated reservoir scheduling diagram according to an embodiment of the present invention;

[0053] Figure 4 is a schematic diagram of runoff regulation calculation based on an aggregated reservoir scheduling diagram according to an embodiment of the present invention;

[0054] Figure 5 2 is a structural block diagram of a device for compiling a multi-objective joint dispatching diagram for a group of reservoirs across river basins according to an embodiment of the present invention;

[0055] Figure 6 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0056] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0057] An embodiment of the present invention provides an embodiment of a method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group. This method compiles a multi-objective joint scheduling diagram for a cross-basin reservoir group in series, with the upstream reservoir being large (having good regulation performance and being used as a compensating reservoir) and the downstream reservoir being small (having low regulation performance and being used as a compensated reservoir). The diagram aims to guide the reservoir operation and scheduling methods to optimize the water supply efficiency of the reservoir group. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer device, such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in a different order than that shown.

[0058] In this embodiment, a method for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group is provided, which can be used in the above-mentioned computer equipment. Figure 1 Flowchart of the method for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0059] Step S101: obtaining basic information related to a cross-basin reservoir group, where the cross-basin reservoir group includes a larger upstream reservoir and a smaller downstream reservoir.

[0060] Specifically, the embodiment of the present invention obtains basic data related to a cross-basin reservoir group, including:

[0061] 1. Obtain rainfall, evaporation, and runoff data within a preset historical time period in the collation area.

[0062] Specifically, data on rainfall, rainfall temporal distribution, and evaporation can be obtained from meteorological departments, or auxiliary data on rainfall and evaporation can be provided by hydrological departments. Hydrological stations conduct long-term monitoring of the flow and water levels of rivers, lakes, and other water bodies, from which runoff data can be inferred. Once the data is obtained, it is sorted chronologically and a data table or database is created to facilitate query and analysis. The runoff, evaporation, and other series used in runoff regulation calculations should be at least 30 years long, with the statistical unit being the month or ten-day period.

[0063] 2. Predict the socio-economic development and population data of the water supply area to formulate water quotas, calculate urban and rural domestic and industrial water demand, and obtain urban and rural water demand process lines.

[0064] Specifically, historical economic data for the water supply area should be collected, including gross domestic product (GDP), industrial structure, and fixed asset investment. By analyzing these data trends, methods such as time series analysis and regression analysis can be used to predict future economic development trends. Past population data for the water supply area should also be collected, including total population, population growth rate, and age structure. Population forecasts can be conducted using methods such as exponential smoothing and gray prediction models to analyze trends and characteristics of population change. Different types of residential users can be categorized and water quotas established accordingly. For example, water quotas for urban and rural residents may differ, as may water quotas for high-income and low-income households. Water use patterns across various industrial sectors within the water supply area should be investigated to understand their production processes, water use processes, and water efficiency. Reasonable industrial water quotas should be established based on industry characteristics and advanced water use technologies. Based on projected population data and proposed domestic water quotas, urban and rural domestic water demand should be calculated. Domestic water demand is equal to population multiplied by the domestic water quota. Based on projected industrial output value and proposed industrial water quotas, industrial water demand should be calculated. Industrial water demand is equal to industrial output value multiplied by the industrial water quota. By summarizing urban and rural domestic and industrial water demands over different time periods, we can obtain the total urban and rural water demand. Finally, we plot the urban and rural water demand process lines with time as the horizontal axis and water demand as the vertical axis, which can intuitively reflect the temporal changes in urban and rural water demand.

[0065] 3. According to the relevant agricultural development plan of the water supply area, the third national land survey and terrain data, the designed irrigation area and planting structure of the reservoir irrigation area are determined, the agricultural irrigation water demand is calculated, and the agricultural irrigation water demand process line is obtained.

[0066] Specifically, by analyzing the expected targets for irrigation area in the relevant agricultural development plans of the water supply area, and paying attention to the development plans for different types of farmland in the plans, the main crop structure of the reservoir irrigation area is determined according to the agricultural development plans and local climate and soil conditions. By analyzing the current land use situation, the area of ​​arable land available for irrigation and the crop water demand are determined, the irrigation water demand of each crop is calculated, and the irrigation water demand of different crops is summarized to obtain the agricultural irrigation water demand of the entire reservoir irrigation area. Finally, the agricultural irrigation water demand process line is drawn with time as the horizontal axis and irrigation water demand as the vertical axis.

[0067] 4. Based on the river type, the intensity of water resources development and utilization in the basin, relevant environmental protection requirements, rainfall and evaporation factors, the ecological environment water demand of the river downstream of the reservoir is calculated to obtain the ecological water demand process line.

[0068] Specifically, comprehensive consideration is given to river type (perennial river, seasonal river), intensity of water resource development and utilization (including water withdrawal for agricultural irrigation, industrial water use, domestic water use, etc., analysis of trends in water resource development and utilization, including water consumption growth in the past few years, planning of new water use projects, etc.), environmental protection requirements (determine river ecological protection goals based on environmental protection requirements, such as protecting aquatic biodiversity, maintaining river ecosystem functions, improving water quality, etc., and formulate corresponding ecological water demand standards for different protection goals) and rainfall evaporation (rainfall is one of the main sources of replenishment for rivers, while evaporation will reduce the amount of water in rivers. Analysis is made of the impact of changes in rainfall and evaporation in different seasons on the ecological water demand of rivers). Based on the selected calculation method (such as the hydrological model method), the ecological water demand for different time periods is calculated. The calculation results can be plotted as an ecological water demand process line to intuitively reflect the temporal variation pattern of the ecological water demand of the downstream river.

[0069] 5. Calculate the reservoir capacity curve based on the measured topographic map, including the reservoir's dead capacity, the capacity between the dead water level and the flood control level, the capacity between the flood control level and the normal water level, and the capacity between the normal water level and the check water level. In practice, the reservoir capacity curve can be calculated based on the measured 1:1000 topographic map; this is for example only and is not intended to be limiting.

[0070] By acquiring relevant basic information of the reservoir consolidation area and the water supply area, the embodiment of the present invention can grasp the actual storage capacity changes of the reservoir and the industrial layout and economic development status of the water supply area, thereby better coordinating the relationship between reservoir water supply and economic development, and laying a good data foundation for achieving the optimal water supply efficiency of the reservoir group.

[0071] Step S102: Determine the water supply restrictions, water supply tasks, and water supply guarantee rate requirements for each water user based on basic data and relevant specifications. Specifically, it includes:

[0072] 1. Based on relevant specifications and standards (for example, the "Specifications for Hydraulic Calculation of Water Conservancy Projects" (SL104-2015) and the "Design Standard for Irrigation and Drainage Projects" (GB 50288-2018)) and in combination with actual conditions, determine the water supply guarantee rate and allowable damage depth for urban and rural water demand, agricultural irrigation water demand, and ecological water demand.

[0073] 2. Based on the water supply guarantee rate and water demand of each water user, the different guarantee rates of different water users are converted into a single user and a water supply guarantee rate. Specifically, in this embodiment of the present invention, the water supply guarantee rates of each water user are unified according to the historical guarantee rate, and the ratio of each water user's water demand to the total water demand is used as a weight, multiplied by the corresponding guarantee rate, and the different guarantee rates of different water supply users are converted into a single user and a water supply guarantee rate, which is calculated using the following formula:

[0074] P 化算 =W 城乡 / W 总 *P 城乡 +W 灌溉 / W 总 *P 灌溉 +W 生态 / W 总 *P 生态 ,

[0075] Where: P 化算 The guarantee rate (%) of a single water supply task is calculated for multiple objectives and used as the water supply guarantee rate for the reservoir scale; W 城乡 is the urban and rural water demand (10,000 m 3 );W 灌溉 The water demand for agricultural irrigation (10,000 m 3 );W 生态 The water demand of ecological environment (10,000 m 3 );W 总 is the total water demand (10,000 m 3 );P 城乡 The urban and rural water supply guarantee rate (%); P 灌溉 Water supply guarantee rate for agricultural irrigation (%); P 生态 It is the ecological water supply guarantee rate (%).

[0076] 3. Add the natural runoff, urban and rural water demand, agricultural irrigation water demand and ecological water demand process lines as the basic data input for the aggregated reservoir runoff regulation calculation.

[0077] 4. Merge the dead storage capacity of the two reservoirs, the storage capacity between the dead water level and the flood limit water level, the combined storage capacity between the flood limit water level and the normal water level, and the storage capacity curve between the normal water level and the check water level to generalize the aggregated reservoir storage capacity curve. This curve is used as a reference for the sum of the beneficial storage capacity of the two reservoirs in the actual dispatching process. The dead water level, flood limit water level, and normal water level diagrams of the two reservoirs are as follows: Figure 2 shown.

[0078] 5. In view of the primary and secondary relationship of water supply tasks, combined with relevant laws, regulations and specifications, formulate the reservoir benefit scheduling principles, and according to the reservoir flood control scheduling needs, clarify the reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season. Based on the above-mentioned benefit scheduling principles, reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season, and the aggregated reservoir capacity curve, determine the restricted water supply requirements and water supply tasks.

[0079] The embodiment of the present invention obtains multi-objective requirements for the scheduling of cross-basin reservoirs by analyzing and processing basic data, thereby achieving the multi-objective requirements through water scheduling.

[0080] Step S103: determining a long series of water supply reduction processes based on the preset water supply reduction task, and performing reverse time-series runoff regulation calculation to obtain the upper envelope of the water level in the preset time period as the limiting water supply line.

[0081] Specifically, reducing the water supply task is the minimum requirement of the project during the damage period outside the design guarantee rate, and should be met at all times of project operation.

[0082] Runoff regulation calculation is a commonly used method in water resource planning and management. It starts at the end of a time series and progressively projects forward to determine the water resource status at different time points. This method can take into account the dynamic changes in reservoir water storage, water release, and various water demand, thereby more rationally planning water resource allocation. In the embodiment of the present invention, the process of performing reverse-time runoff regulation calculation to determine the water supply limit is as follows:

[0083] A1, multiply the water-using object by the water supply reduction coefficient and add it to the ecological base flow at different time periods to obtain a long series of water supply reduction processes, where the water supply reduction coefficient = 1-allowable damage depth;

[0084] For example, multiply the urban and rural water supply by the water supply reduction coefficient of 0.7 and the irrigation water supply by the water supply reduction coefficient of 0.5 and add them together with the ecological base flow in different periods to obtain a long series of water supply reduction processes. Using this process as the input condition, perform reverse time-series runoff regulation calculations and find the upper envelope of the water level in each month (ten days) as the limiting water supply line.

[0085] A2, taking the month (ten-day period) as the calculation unit, taking the last period of the long series calculation unit i as the starting period, and using the dead storage capacity and the corresponding water surface area as the basis to calculate the reservoir evaporation and leakage loss W 损，i , determine the difference W between the natural water supply and reservoir water loss of calculation unit i 天，i -W 损，i and reduce the water supply process W 降，i The minimum value of the two is taken as the reservoir water supply W of calculation unit i 供，i , the calculation formula is W 供，i =min(W 天，i -W 损，i , W 降，i ); Then judge the surplus and shortage status of the reservoir, if the natural water W of the calculation unit i 天，i -W 损，i Greater than or equal to the reduced water supply W of calculation unit i 降，i , then calculate the remaining water volume W of the reservoir in unit i 余，i =W 天，i -W 损，i -W 降，i , reservoir water shortage W 缺，i =0; otherwise, calculate the remaining water volume W of the reservoir in unit i 余，i =0, reservoir water shortage W 缺，i =W 降，i +W 损，i -W 天，i .

[0086] A3, after judging the water shortage status of the reservoir in calculation unit i, the dead water level is used as the starting water level Z for the end of the month (ten-day period) of calculation unit i. 末，i , dead storage capacity is used as the calculation unit i month (ten-day) end period start adjustment storage capacity V 末，i , calculate the water loss W of the calculation unit 损，i , then according to the formula V 初，i =max(V 末，i +W 缺，i -W 余，i , V 死 ) Calculate the monthly (ten-day) storage capacity V for the calculation period 初，i , and calculate the corresponding Z 初，i The max function in the formula is intended to indicate that the reservoir capacity cannot be lower than the dead storage capacity.

[0087] A4, V 末，i-1 =V 初，i , calculate the reservoir evaporation and leakage loss W 损，i-1 The required reservoir capacity and water surface area data are taken as the average of the two calculation units. The above method is repeated until the calculation reaches the end of the initial calculation unit, and the upper envelope of the initial water level of each calculation unit at the beginning of the month (ten-day period) is taken as the limiting water supply line.

[0088] The embodiment of the present invention uses reverse chronological calculation to work backwards from a certain moment in the future, fully considering the changing trend of water demand and the uncertainty of water supply conditions. The restricted water supply line determined in this way can more accurately regulate water supply, avoid excessive water supply when it is not necessary, and thus improve the utilization efficiency of water resources.

[0089] Step S104: Based on the initial dispatching diagram formed by the restricted water supply line and the normal water level, flood limit water level, and dead water level of the reservoir, reverse-sequence runoff regulation calculation is performed according to the initial dispatching diagram to obtain an anti-destruction line.

[0090] Specifically, the anti-tampering line is calculated through reverse-chronological runoff regulation, taking into account the restricted water supply line and various water levels. This allows the reservoir to better cope with various potential risk scenarios during operation. To provide an accurate runoff regulation process for the anti-tampering line calculation, a reverse-chronological runoff regulation calculation is performed based on an initial scheduling diagram formed by the restricted water supply line and the reservoir's basic characteristic water levels (normal water level, flood control level, and dead water level). The actual water level's position in the scheduling diagram determines the water supply status. When the water level is between the reduced water supply line and the upper storage level, the reservoir supplies water as needed. When the water level is between the reduced water supply line and the dead water level, the reservoir is dispatched according to the reduced water supply process. This results in a reservoir scale (beneficial storage capacity, normal water level) with a constant reservoir runoff and a calculated guarantee rate. This also yields a series of reduced water supply, including periods of extreme drought, and normal water supply within the design guarantee rate, which is then used to calculate the reservoir's anti-tampering line. To ensure that the normal and reduced water supply areas are independent and avoid overlap, during the reverse-chronological continuous runoff regulation calculation process, the reservoir water level must be maintained at or above the reduced water supply line during each normal water supply period. Finally, the upper limit of the anti-tampering water level for each month (or ten-day period) of each year is used as the anti-tampering line. If the anti-tampering line is higher than the normal water level or flood-limited water level, the normal water level or flood-limited water level is used.

[0091] In the embodiment of the present invention, the calculation method of the anti-destruction line is similar to the calculation method of the water supply limit line, except that the formula V 初，i =min(max(V 末，i +W 缺，i -W 余，i , V 限，i ), V 上限,i ) Calculate the monthly (ten-day) storage capacity V for the calculation period 初，i . Where V 限，i is the storage capacity corresponding to the restricted water supply line in calculation period i, V 上限，iIn order to calculate the storage capacity corresponding to the upper limit water level allowed for water storage in the reservoir during period i, the flood limit water level and the normal water level are used to determine whether the storage capacity at the beginning of the month (ten-day period) is lower than the storage capacity corresponding to the restricted water supply line (i.e., the normal water supply area and the restricted water supply area are independent of each other), and cannot be higher than the upper limit storage capacity allowed for water storage in each period of the reservoir.

[0092] In step S105, water is supplied normally to water users with relatively high water supply guarantee rates, while water supply to other water users is restricted. A water supply series is formed and reverse time sequence adjustment calculation is performed, and the upper envelope of the water level in the preset time period is taken as the boundary scheduling line.

[0093] Specifically, the comprehensive utilization of reservoir scheduling is a multi-objective decision-making process, in which the various objectives are mutually contradictory and mutually exclusive. That is, improving one objective always comes at the expense of the benefits of another objective. In addition, multi-objective decision-making is non-optimal. In multi-objective decision-making, there is no optimal solution like in single-objective decision-making, but only a satisfactory solution and an optimal equilibrium solution for the decision maker. No single option (or solution) has better benefits for all objectives than other options (or other solutions), and this determines the non-uniqueness of the solution to the multi-objective decision-making problem. It is a set of solutions, called a "non-inferior solution set." Based on this, there is relatively little research on the boundary scheduling line in relevant specifications, books, and literature, and it is characterized by relying on the subjective experience of designers and multiple adjustments through human-computer interaction. According to the "Hydraulic Design Manual" (Volume 2), referring to the calculation method of lowering the water supply line, normal water supply will be provided to water users with high water supply guarantee rates (high water supply priority), and water supply will be restricted to other water users (for example, the urban and rural water supply guarantee rate is higher than the agricultural irrigation water supply guarantee rate in relevant regulations). A water supply series is formed for reverse time adjustment calculation, and a certain boundary scheduling line can be obtained by taking the upper envelope of the water storage level in each month (or ten days).

[0094] For example, when calculating the ecological water supply demarcation dispatch line, urban and rural areas and agricultural irrigation are supplied according to normal demand, and ecological water demand is discounted according to the restriction coefficient:

[0095] Q 供 =Q 城乡 *1+Q 灌溉 *1+Q 生态 *β, β is the ecologically limited water supply system.

[0096] This forms a water supply series, and according to the calculation method of lowering the water supply line, the ecological water supply boundary scheduling line can be obtained.

[0097] Furthermore, the resulting demarcation scheduling line is used to calculate reservoir operation and can be modified and adjusted interactively. The principle of adjustment is to ensure that the scheduling lines do not intersect. If the ecological water supply guarantee rate calculated based on the above-mentioned demarcation scheduling line is too high, the scheduling line can be partially raised, meaning that ecological water supply restrictions are initiated at higher water levels, thereby reducing the individual guarantee rate. If the ecological water supply guarantee rate calculated based on the above-mentioned demarcation scheduling line is too low, the scheduling line can be partially lowered, meaning that ecological water supply restrictions are initiated at lower water levels, thereby increasing the individual guarantee rate. Using this method to calculate the demarcation scheduling line, local adjustments can quickly yield a demarcation scheduling line solution that meets the decision-maker's requirements. Based on actual engineering design experience, it is not advisable to have too many demarcation scheduling lines, as this can lead to unreasonable phenomena such as intersecting scheduling lines.

[0098] Different water users typically have different water supply guarantee rate requirements. By performing reverse-time regulation calculations based on these requirements, the characteristics and needs of each user can be fully considered. Scheduling based on the demarcation scheduling line allows for more targeted water resource allocation, ensuring that different users receive the appropriate water supply at their required guarantee rates. This provides a reference for cross-regional water resource allocation and integrated river basin management, promotes interregional cooperation and coordination, and achieves optimal allocation and sustainable use of water resources.

[0099] In step S106, the restricted water supply line, the boundary scheduling line, the anti-destruction line and the corresponding dead water level, normal water level and flood limit water level are combined into an aggregated reservoir scheduling diagram, and a runoff regulation calculation is performed based on the scheduling diagram to verify whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

[0100] Specifically, the aggregated reservoir operation diagram is as follows: Figure 3 As shown, runoff regulation calculations based on scheduling diagrams are the process of redistributing natural runoff in time and space based on the water demands of various water users, leveraging the reservoir's storage and regulation capabilities. Runoff regulation calculations based on scheduling diagrams determine whether the established restricted water supply requirements, water supply tasks, and water supply guarantee ratios meet the requirements. Once natural runoff is determined, the reservoir's water supply and water supply guarantee ratios are determined based on the proposed reservoir size (beneficial storage capacity, normal storage level). If not, the relationship between the three can be adjusted, namely, by adjusting the restricted water supply coefficient and recalculating the restricted water supply line. If, under the established natural runoff conditions, the water supply guarantee ratio calculated for the proposed reservoir size is too high or too low, and even if the restricted water supply coefficient cannot be adjusted to meet the guarantee ratio calculation, the reservoir size can be increased or decreased based on actual conditions.

[0101] In an embodiment of the present invention, the natural runoff, urban and rural water demand, agricultural irrigation water demand, and ecological water demand process lines are added together as the basic data for the aggregate reservoir runoff regulation calculation input, which can comprehensively cover various water use types and provide a comprehensive water resource supply and demand framework for reservoir runoff regulation calculation. The basic data that considers various water demand needs helps to achieve multi-objective scheduling of reservoirs and improve the comprehensive benefits of reservoirs. In addition to meeting basic functions such as urban and rural water use, agricultural irrigation, and ecological water demand, reservoirs can also play an important role in flood control, power generation, shipping, etc. Through reasonable scheduling, a balance can be found between different goals to maximize the benefits of reservoirs.

[0102] like Figure 4 As shown, the reservoir scheduling of the embodiment of the present invention uses water level as a criterion. When the reservoir water level is between the dead water level and the restricted water supply line, all water users receive a water discount. When the reservoir water level is between the restricted water supply line and the boundary scheduling line, urban and rural areas and irrigation areas receive water according to normal demand, with ecological water supply discounted. When the reservoir water level is between the boundary scheduling line and the anti-destruction line, all water users receive water as normal. This invention compiles a multi-objective joint scheduling diagram for cross-basin reservoirs to guide reservoir operation and scheduling, thereby optimizing the water supply efficiency of the reservoir group.

[0103] In this embodiment, a device for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group is also provided. The device is used to implement the above-mentioned embodiments and preferred implementation methods. The details that have been described will not be repeated here. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0104] This embodiment provides a device for compiling a multi-objective joint dispatching diagram for a group of reservoirs across river basins. Figure 5 Shown, including:

[0105] A basic data acquisition module 501 is used to acquire basic data related to a cross-basin reservoir group, where the cross-basin reservoir group includes a larger upstream reservoir and a smaller downstream reservoir;

[0106] A water supply demand determination module 502 is configured to determine the restricted water supply requirements, water supply tasks, and water supply guarantee rate requirements of each water user based on the basic data and relevant specifications;

[0107] The water supply limit calculation module 503 is used to determine a long series of water supply reduction processes based on the preset water supply reduction task, and perform reverse time-series runoff regulation calculation to obtain the upper envelope of the water level in the preset time period as the water supply limit;

[0108] The anti-destruction line calculation module 504 is used to perform reverse-time runoff regulation calculations based on an initial scheduling diagram formed by the restricted water supply line and the normal water level, flood limit water level, and dead water level of the reservoir to obtain the anti-destruction line;

[0109] The boundary scheduling line calculation module 505 is used to perform reverse time sequence adjustment calculation based on the water supply guarantee rate of each water user, and take the upper envelope of the water level in the preset time period as the boundary scheduling line;

[0110] The aggregated reservoir scheduling diagram generation module 506 combines the restricted water supply line, the boundary scheduling line, the anti-destruction line and the corresponding dead water level, the normal water level and the flood limit water level into an aggregated reservoir scheduling diagram, and performs runoff regulation calculation based on the scheduling diagram to verify whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

[0111] In some optional implementations, the basic information acquisition module 501 includes:

[0112] Hydrological data acquisition unit, used to obtain rainfall, evaporation and runoff data within a preset historical time period in the collation area;

[0113] The urban and rural water demand process line acquisition unit is used to predict the socio-economic development and population data of the water supply area to formulate water quotas, calculate urban and rural domestic and industrial water demand, and obtain urban and rural water demand process lines;

[0114] The agricultural irrigation water demand process line acquisition unit is used to determine the designed irrigation area and planting structure of the reservoir irrigation area according to the relevant agricultural development plan of the water supply area, calculate the agricultural irrigation water demand, and obtain the agricultural irrigation water demand process line;

[0115] The ecological water demand process line acquisition unit is used to calculate the ecological environment water demand of the river downstream of the reservoir based on the river type, the intensity of water resources development and utilization in the basin, relevant environmental protection requirements, rainfall and evaporation factors, and obtain the ecological water demand process line;

[0116] The reservoir capacity acquisition unit is used to calculate the reservoir capacity curve based on the measured topographic map, including the dead storage capacity of the reservoir, the storage capacity between the dead water level and the flood limit water level, the storage capacity between the flood limit water level and the normal water level, and the storage capacity between the normal water level and the verification water level.

[0117] In some optional implementations, the water supply demand determination module 502 includes:

[0118] The water supply guarantee rate determination unit is used to determine the water supply guarantee rate and allowable damage depth for urban and rural water demand, agricultural irrigation water demand, and ecological water demand based on relevant standards and actual conditions, and to convert the different guarantee rates of different water users into a single object and water supply guarantee rate based on the water supply guarantee rate and water demand of each water user;

[0119] The natural runoff, urban and rural water demand, agricultural irrigation water demand and ecological water demand process lines are added together as the basic data for the calculation input of aggregated reservoir runoff regulation;

[0120] The aggregate storage capacity curve acquisition unit is used to merge the dead storage capacity of the two reservoirs, the storage capacity between the dead water level and the flood limit water level, the combined storage capacity between the flood limit water level and the normal water level, and the storage capacity curves between the normal water level and the check water level to generalize the aggregate reservoir storage capacity curve;

[0121] The water supply requirement and water supply task determination module is used to formulate reservoir benefit scheduling principles based on the primary and secondary relationships of water supply tasks, in combination with relevant laws and regulations, and to clarify the reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season according to the reservoir flood control scheduling needs. Based on the said benefit scheduling principles, reservoir flood season time, flood limit water level and the upper limit of reservoir water storage during the flood season, and the aggregated reservoir capacity curve, the restricted water supply requirements and water supply tasks are determined.

[0122] In some optional implementations, the water supply guarantee rate of each water user is unified according to the historical guarantee rate, and the ratio of the water demand of each water user to the total water demand is used as a weight, multiplied by the corresponding guarantee rate and summed. The different guarantee rates of different water supply objects are converted into a single object and water supply guarantee rate, and calculated using the following formula:

[0123] P 化算 =W 城乡 / W 总 *P 城乡 +W 灌溉 / W 总 *P 灌溉 +W 生态 / W 总 *P 生态 ,

[0124] Among them, P 化算 The guarantee rate (%) of a single water supply task is calculated for multiple objectives and used as the water supply guarantee rate for the reservoir scale; W 城乡 is the urban and rural water demand (10,000 m 3 );W 灌溉 The water demand for agricultural irrigation (10,000 m 3 );W 生态 The water demand of ecological environment (10,000 m 3 );W 总 is the total water demand (10,000 m 3 );P 城乡 The urban and rural water supply guarantee rate (%); P 灌溉 Water supply guarantee rate for agricultural irrigation (%); P 生态 It is the ecological water supply guarantee rate (%).

[0125] In some optional implementations, a boundary scheduling line adjustment module is further included, which is used to locally adjust the boundary scheduling line based on the decision maker's requirements, and the principle of adjustment is that the scheduling lines do not cross each other.

[0126] In some optional embodiments, a long series of water supply reduction processes is determined based on a preset water supply reduction task, and reverse time-series runoff regulation calculation is performed to obtain an upper envelope of the water level in a preset time period as a limiting water supply line, including:

[0127] Multiply the water-using object by the water supply reduction coefficient and add it to the ecological base flow in different periods to obtain a long series of water supply reduction processes, where the water supply reduction coefficient = 1-allowable damage depth;

[0128] The calculation unit is month or ten days, the last period of the last calculation unit i of the long series of water supply reduction process is used as the starting period, and the dead storage capacity and the corresponding water surface area are used as the basis to calculate the reservoir evaporation and leakage loss W. 损，i , determine the difference W between the natural water supply and reservoir water loss of calculation unit i 天，i -W 损，i and reduce the water supply process W 降，i The minimum value of the two is taken as the reservoir water supply W of calculation unit i 供，i , the calculation formula is W 供，i =min(W 天，i -W 损，i , W 降，i ); Then judge the surplus and shortage status of the reservoir, if the natural water W of the calculation unit i 天，i -W 损，i Greater than or equal to the reduced water supply W of calculation unit i 降，i , then calculate the remaining water volume W of the reservoir in unit i 余，i =W 天，i -W 损，i -W 降，i , reservoir water shortage W 缺，i =0; otherwise, calculate the remaining water volume W of the reservoir in unit i 余，i =0, reservoir water shortage W 缺，i =W 降，i +W 损，i -W 天，i ;

[0129] After judging the surplus or shortage status of the reservoir in calculation unit i, the dead water level is used as the starting water level Z for the end of the month or ten-day period of calculation unit i. 末，i , dead storage capacity is used as the calculation unit i month or end of ten-day period to adjust storage capacity V 末，i , calculate the water loss W of the calculation unit 损，i , then according to the formula V 初，i =max(V 末，i +W 缺，i-W 余，i , V 死 ) Calculate the monthly or ten-day storage capacity V for the calculation period 初，i , and calculate the corresponding Z 初，i , the max function in the formula is intended to indicate that the storage capacity of the reservoir cannot be lower than the dead storage capacity;

[0130] V 末，i-1 =V 初，i , calculate the reservoir evaporation and leakage loss W 损，i-1 The required reservoir capacity and water surface area data are taken as the average of the two calculation units. The above method is repeated until the calculation reaches the end of the initial calculation unit. The upper envelope of the water level at the beginning of the month or ten days in each calculation unit is taken as the limiting water supply line.

[0131] The further functional description of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0132] The device for compiling a multi-objective joint scheduling diagram for a group of reservoirs across river basins in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0133] The embodiment of the present invention also provides a computer device having the above Figure 5 The device shown is for compiling a multi-objective joint dispatching diagram for a group of reservoirs across river basins.

[0134] See also Figure 6 , Figure 6 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 6 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 A processor 10 is taken as an example.

[0135] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0136] The memory 20 stores instructions that can be executed by at least one processor 10, so as to enable at least one processor 10 to execute the method shown in the above embodiment.

[0137] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0138] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0139] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0140] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0141] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0142] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group, characterized in that: include: Obtain basic information on inter-basin reservoir groups, including larger upstream reservoirs and smaller downstream reservoirs; Determine the water supply restrictions, water supply tasks and water supply guarantee rate requirements for each water user based on the basic data and relevant specifications; Based on the preset water supply reduction task, a long series of water supply reduction process series is determined, and reverse time series runoff regulation calculation is performed to obtain the upper envelope of the water level in the preset time period as the limiting water supply line; Based on the initial dispatching diagram formed by the restricted water supply line and the normal water level, flood limit water level and dead water level of the reservoir, the runoff regulation calculation is performed in reverse order according to the initial dispatching diagram to obtain the anti-destruction line; Based on the normal water supply to users with relatively high water supply guarantee rate, and the restricted water supply to other users, a water supply series is formed to perform reverse time sequence adjustment calculation, and the upper envelope of the water level in the preset time period is taken as the boundary dispatching line; The restricted water supply line, boundary scheduling line and anti-destruction line and the corresponding dead water level, normal water level and flood limit water level are combined to form an aggregated reservoir scheduling diagram, and runoff regulation calculation is performed based on the scheduling diagram to check whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

2. The method according to claim 1, characterized in that The basic data on inter-basin reservoirs are obtained, including: Obtain the rainfall, evaporation and runoff data within the preset historical time period of the collated area; Predict the socio-economic development and population data of the water supply area to formulate water quotas, calculate urban and rural domestic and industrial water demand, and obtain urban and rural water demand process lines; According to the relevant agricultural development plan of the water supply area, the third land survey and topographic data, the designed irrigation area and planting structure of the reservoir irrigation area are determined, the agricultural irrigation water demand is calculated, and the agricultural irrigation water demand process line is obtained; According to the river type, the intensity of water resources development and utilization in the river basin, and relevant environmental protection requirements, the ecological environment water demand of the river downstream of the reservoir is calculated to obtain the ecological water demand process line; The reservoir capacity curve is calculated based on the measured topographic map, including the dead storage capacity of the reservoir, the storage capacity between the dead water level and the flood limit water level, the storage capacity between the flood limit water level and the normal water level, and the storage capacity between the normal water level and the verification water level.

3. The method according to claim 2, characterized in that Based on the basic data and relevant specifications, the restricted water supply requirements, water supply tasks and water supply guarantee rate of each water user are determined, including: Based on relevant standards and in combination with actual conditions, determine the water supply guarantee rate and allowable damage depth for urban and rural water demand, agricultural irrigation water demand and ecological water demand, and based on the water supply guarantee rate and water demand of each water user, calculate the different guarantee rates of different water users into a single object and water supply guarantee rate; Add the natural runoff, urban and rural water demand, agricultural irrigation water demand and ecological water demand process lines as the basic data for the aggregate reservoir runoff regulation calculation input; The dead storage capacity of the two reservoirs, the storage capacity between the dead water level and the flood limit water level, the combined storage capacity between the flood limit water level and the normal water level, and the storage capacity curves between the normal water level and the check water level are correspondingly merged to generalize the aggregated reservoir storage capacity curve; In view of the primary and secondary relationship of water supply tasks, combined with relevant laws and regulations, principles for reservoir benefit scheduling are formulated, and according to the flood control scheduling needs of the reservoir, the reservoir flood season, flood limit water level and the upper limit of the allowable water storage during the flood season are clarified. Based on the said principles for benefit scheduling, reservoir flood season, flood limit water level and the upper limit of the allowable water storage during the flood season and the aggregated reservoir capacity curve, the restricted water supply requirements and water supply tasks are determined.

4. The method according to claim 3, characterized in that The water supply guarantee rate and water demand of each water user are used to convert different guarantee rates of different water users into a single water user and water supply guarantee rate, including: The water supply guarantee rate of each water user is unified according to the historical guarantee rate. The ratio of the water demand of each water user to the total water demand is used as the weight, multiplied by the corresponding guarantee rate and summed. The different guarantee rates of different water supply objects are converted into a single object and water supply guarantee rate, which are calculated using the following formula: P 化算 =W 城乡 / W 总 *P 城乡 +W 灌溉 / W 总 *P 灌溉 +W 生态 / W 总 *P 生态 , Among them, P 化算 is the guarantee rate (%) of a single water supply task calculated from multiple objectives, which is used as the water supply guarantee rate for the reservoir scale; W 城乡 is the urban and rural water demand (10,000 m 3 );W 灌溉 The water demand for agricultural irrigation (10,000 m 3 );W 生态 The water demand of ecological environment (10,000 m 3 );W 总 is the total water demand (10,000 m 3 );P 城乡 is the urban and rural water supply guarantee rate (%); P 灌溉 Water supply guarantee rate for agricultural irrigation (%); P 生态 It is the ecological water supply guarantee rate (%).

5. The method according to claim 2, characterized in that: After the step of forming a water supply series based on the water supply guarantee rate of each water user to perform reverse time sequence adjustment calculation and taking the upper envelope of the water storage level in a preset time period as the boundary scheduling line, the method further includes: Based on the requirements of decision makers, the boundary dispatching lines are partially adjusted, and the principle of adjustment is that the dispatching lines do not cross each other.

6. The method according to claim 3, characterized in that The method of determining a long series of water supply reduction processes based on a preset water supply reduction task, and performing reverse time-series runoff regulation calculation to obtain an upper envelope of a preset time period water level as a limiting water supply line includes: Multiply the water-using object by the water supply reduction coefficient and add it to the ecological base flow in different periods to obtain a long series of water supply reduction processes, where the water supply reduction coefficient = 1-allowable damage depth; The calculation unit is month or ten days, the last period of the last calculation unit i of the long series of water supply reduction process is taken as the starting period, and the dead storage capacity and the corresponding water surface area are used as the basis to calculate the reservoir evaporation and leakage loss W. 损，i , determine the difference W between the natural water supply and reservoir loss of calculation unit i 天，i -W 损，i and reduce the water supply process W 降，i The minimum value of the two is taken as the reservoir water supply W of calculation unit i 供，i , the calculation formula is W 供，i =min(W 天，i -W 损，i , W 降，i ); Then judge the surplus and shortage state of the reservoir. If the natural water supply W of calculation unit i is 天，i -W 损，i Greater than or equal to the reduced water supply W of computing unit i 降，i , then calculate the remaining water volume W of the reservoir in unit i 余，i =W 天，i -W 损，i -W 降，i , reservoir water shortage W 缺，i =0; otherwise, calculate the remaining water volume W of the reservoir in unit i 余，i =0, reservoir water shortage W 缺，i =W 降，i +W 损，i -W 天，i ; After determining the water shortage status of the reservoir in calculation unit i, the dead water level is used as the starting water level Z for the end of the month or ten-day period of calculation unit i. 末，i , dead storage capacity is used as the calculation unit i month or end of ten-day period start storage capacity V 末，i , calculate the water loss W of the calculation unit 损，i , and then according to the formula V 初，i =max(V 末，i +W 缺，i -W 余，i , V 死 ) Calculate the monthly or ten-day storage capacity V of the calculation period 初，i , and calculate the corresponding Z 初，i , the max function in the formula is intended to indicate that the reservoir capacity cannot be lower than the dead storage capacity; V 末，i-1 =V 初，i , calculate the reservoir evaporation and leakage loss W 损，i-1 The required reservoir capacity and water surface area data are taken as the average of the two calculation units. The above method is used for analogy until the calculation reaches the end of the initial calculation unit. The upper envelope of the water level at the beginning of the month or ten days in each calculation unit is taken as the limiting water supply line.

7. A device for compiling a multi-objective joint dispatching diagram for a cross-basin reservoir group, characterized in that: The device comprises: A basic data acquisition module is used to acquire basic data related to a cross-basin reservoir group, wherein the cross-basin reservoir group includes a larger upstream reservoir and a smaller downstream reservoir; A water supply demand determination module is used to determine the restricted water supply requirements, water supply tasks and water supply guarantee rate of each water user based on the basic information and relevant specifications; The water supply limit calculation module is used to determine a long series of water supply reduction processes based on a preset water supply reduction task, and perform reverse time-series runoff regulation calculation to obtain an upper envelope of the water level in a preset time period as the water supply limit; The anti-destruction line calculation module is used to perform reverse-time runoff regulation calculation according to the initial dispatching diagram formed by the restricted water supply line and the normal water level, flood limit water level and dead water level of the reservoir to obtain the anti-destruction line; The boundary dispatching line calculation module is used to supply water to users with relatively high water supply guarantee rates normally and restrict water supply to other users, forming a water supply series for reverse time sequence adjustment calculation, and taking the upper envelope of the water level in a preset time period as the boundary dispatching line; The aggregated reservoir scheduling diagram generation module is used to form an aggregated reservoir scheduling diagram by combining the restricted water supply line, boundary scheduling line, anti-destruction line and corresponding dead water level, normal water level and flood limit water level, and perform runoff regulation calculation based on the scheduling diagram to check whether the restricted water supply, water supply task and water supply guarantee rate requirements of each water user are met.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group according to any one of claims 1 to 6.

10. A computer program product, characterized in that It includes computer instructions, which are used to enable a computer to execute the method for compiling a multi-objective joint scheduling diagram for a cross-basin reservoir group as described in any one of claims 1 to 6.

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