Hydrological model reservoir water storage simulation method

Abstract

The invention discloses a hydrological model reservoir water storage simulation method. The method comprises the steps of 1, section hydrological information acquisition, 2, section hydrological analysis, 3, reservoir discharge evaluation, 4, reservoir water regulation calculation and 5, reservoir processing. The credibility of a data analysis result is improved by performing parameter adjustment on historical hydrological data, and the situation that reservoir scheduling is performed due to insufficient water supply of one reservoir is reduced by performing overall analysis on monitoring sections, so that the waste of resources is reduced, each drought monitoring section is sequenced and the reservoir scheduling is performed, the influence of drought is reduced, and the working efficiency is improved. When the drought is too serious, the drought monitoring sections which cannot be distributed to the water reservoir are screened out, unified reservoir dead storage capacity proportion adjustment is carried out on the drought monitoring sections which cannot be distributed to the water reservoir, and therefore drought aggravation is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of reservoir water storage simulation, and relates to a method for simulating reservoir water storage by a hydrological model. Background Technique

[0002] The water storage capacity of a reservoir is often easily affected by the environment, and the water consumption downstream of the reservoir is also easily affected by the environment, human factors, etc. As a result, when the reservoir supplies water, there is often a problem of insufficient water supply. If water volume regulation of the reservoir is carried out only after problems occur, it is often impossible to supply water in time, thereby reducing the environmental quality and people's living quality downstream of the reservoir. Therefore, it is very necessary to simulate the water storage capacity of the reservoir by using a hydrological model and conduct reservoir regulation.

[0003] The prior art, such as a method and system for simulating the hydrology of a data - scarce cascade reservoir basin disclosed in the invention patent application with the publication number of CN115544785B, the method includes: constructing a water level - area change curve of the cascade reservoir through multi - source remote sensing earth observation data of the data - scarce cascade reservoir basin to reveal the dynamic change process, water storage strategy and operation rules of the reservoirs in the data - scarce cascade reservoir basin; constructing a hydrological model by combining the regionalization method and a hydrological parameter calibration scheme for integrating multi - source targets to improve the runoff simulation accuracy; reconstructing the runoff at the basin outlet under reservoir regulation to quantitatively reveal the influence of climate change and reservoir regulation on the runoff at the basin outlet and the water volume control effect on the downstream wet - dry changes.

[0004] The prior art, such as a method and device for evaluating the water energy resources of a cascade reservoir group considering climate change disclosed in the invention patent application with the publication number of CN117172965B, the method includes: obtaining first meteorological prediction data of the basin where the cascade reservoir group is located; inputting the first meteorological prediction data into a hydrological model to obtain a first simulated runoff; inputting the first simulated runoff into a calibration model to obtain a second simulated runoff; calculating the theoretical reserve of water energy resources according to the second simulated runoff. Through this invention, the theoretical reserve of water energy resources is calculated to provide a basis for the development of water energy resources.

[0005] As can be seen from the above solution, in the current reservoir water storage simulation method, on the one hand, there is a lack of due attention to the assessment of water storage using historical hydrological data of the cross-section. In a cross-section, often multiple reservoirs supply water. When the water volume of one reservoir is insufficient, other reservoirs in the same cross-section can supply water without the need for reservoir operation. If reservoir operation is carried out on the reservoir with insufficient water volume at this time, it is easy to waste resources, and historical hydrological data is easily affected by extreme weather. If the historical hydrological data is not processed, the credibility of the data analysis results will be reduced. On the other hand, in reservoir operation, sometimes the drought is too severe, and the water conveyance volume of the water conveyance reservoir is insufficient to meet the water shortage volume of the drought-stricken cross-section. If the dead storage capacity ratios of the reservoirs in the drought-stricken cross-section are not adjusted proportionally at this time, it is easy to exacerbate the drought. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a hydrological model reservoir water storage simulation method. By comprehensively analyzing the monitoring cross-sections, the situation of carrying out reservoir operation due to insufficient water supply in one reservoir is reduced, thereby reducing waste of resources. Sorting and reservoir operation are carried out on each drought monitoring cross-section to reduce the impact of drought. And when the drought is too severe, the drought monitoring cross-sections that cannot be allocated to the water conveyance reservoir are screened out, and the dead storage capacity ratios of the reservoirs in the drought monitoring cross-sections that cannot be allocated to the water conveyance reservoir are uniformly adjusted proportionally, thereby reducing the exacerbation of drought.

[0007] To solve the above technical problem, the technical solution adopted by the present invention is: a hydrological model reservoir water storage simulation method, including the following steps: Step 1, obtaining cross-section hydrological information: obtaining the reservoir water volume of each upstream reservoir of each monitoring cross-section at the current monitoring time point; Step 2, cross-section hydrological analysis: analyzing the estimated water shortage volume of each monitoring cross-section within the target analysis time period; Step 3, evaluating the water discharge volume of the reservoir: calculating the estimated water supply volume of the upstream reservoirs of each monitoring cross-section within the target analysis time period, screening each drought monitoring cross-section and each abundant monitoring cross-section, and analyzing the required water discharge volume of the upstream reservoirs of each abundant monitoring cross-section; Step 4, calculating reservoir water volume adjustment: screening each water conveyance reservoir, calculating the drought hazard coefficient of each drought monitoring cross-section, arranging each drought monitoring cross-section in descending order according to the drought hazard coefficient, so as to obtain the sorted drought monitoring cross-sections, screening each water conveyance monitoring cross-section and each storage capacity adjustment monitoring cross-section, and further analyzing each target water conveyance reservoir of each pressure water conveyance reservoir and each water conveyance monitoring cross-section; Step 5, reservoir treatment: calculating the dead storage capacity adjustment ratio of each storage capacity adjustment monitoring cross-section, and sending the dead storage capacity adjustment ratios of each target water conveyance reservoir, each pressure water conveyance reservoir and each storage capacity adjustment monitoring cross-section of each water conveyance monitoring cross-section to the person in charge of the reservoir management station of each monitoring cross-section.

[0008] In step 2, analyze the estimated water shortage of each monitoring section during the target analysis time period. The specific analysis method is as follows: Obtain the evaporation, rainfall, urban water consumption of each monitoring section in each historical target analysis time period from the local database, where x represents the number of each monitoring section, y is a positive integer greater than 2, n represents the number of each historical target analysis time period, and m is a positive integer greater than 2; Obtain each evaporation range, each rainfall range, and each urban water consumption range from the local database, and map to obtain the evaporation range, rainfall range, and urban water consumption range of each monitoring section in each historical target analysis time period; Calculate the tuning parameter values of each evaporation range, each rainfall range, and each urban water consumption range of each monitoring section, and map to obtain the tuning parameter values of the evaporation range, rainfall range, and urban water consumption range of each monitoring section in each historical target analysis time period 、the tuning parameter values of the rainfall range 、the tuning parameter values of the urban water consumption range ; Analyze the estimated water shortage of each monitoring section during the target analysis time period where m represents the number of historical target analysis time periods.

[0009] Calculate the tuning parameter values of each evaporation range, each rainfall range, and each urban water consumption range of each monitoring section. The specific calculation method is as follows: Based on the evaporation range, rainfall range, and urban water consumption range of each monitoring section in each historical target analysis time period, map to obtain each historical target analysis time period of each monitoring section in each evaporation range, each historical target analysis time period in each rainfall range, and each historical target analysis time period in each urban water consumption range. Count the number of historical target analysis time periods of each monitoring section in each evaporation range, the number of historical target analysis time periods of each monitoring section in each rainfall range, and the number of historical target analysis time periods of each monitoring section in each urban water consumption range. Count the total number of historical target analysis time periods of each monitoring section, and calculate the proportion of the number of historical target analysis time periods of each monitoring section in each evaporation range, each rainfall range, and each urban water consumption range to the total number, and mark them as the tuning parameter values of each evaporation range, each rainfall range, and each urban water consumption range of each monitoring section respectively.

[0010] Calculate the estimated water supply of the upstream reservoir of each monitoring section during the target analysis time period. The specific calculation method is as follows: Calculate the estimated natural water supply of each upstream reservoir for each monitoring section during the target analysis period , where i represents the number of each upstream reservoir , and j is a positive integer greater than 2 Obtain the dead storage capacity of each upstream reservoir for each monitoring section from the local database ; Based on the storage water volume of each upstream reservoir for each monitoring section at the current monitoring time point , calculate the estimated water supply of the upstream reservoirs for each monitoring section during the target analysis period .

[0011] Calculate the estimated natural water supply of each upstream reservoir for each monitoring section during the target analysis period. The specific calculation method is as follows: Obtain the water supply of various reservoir water sources of each upstream reservoir for each monitoring section in each historical target analysis period from the local database , where r represents the number of various reservoir water sources , and s is a positive integer greater than 2 Based on the method of calculating the tuning parameter values for each evaporation interval, each rainfall interval, and each urban water consumption interval of each monitoring section, calculate the tuning parameter values of the water supply of various reservoir water sources of each upstream reservoir for each monitoring section ; Calculate the estimated natural water supply of each upstream reservoir for each monitoring section during the target analysis period .

[0012] Analyze the required downstream water volume of each upstream reservoir for each abundant monitoring section. The specific analysis method is as follows: Based on the estimated natural water supply of each upstream reservoir for each monitoring section during the target analysis period, extract the estimated natural water supply of each upstream reservoir for each abundant monitoring section during the target analysis period , where represents each abundant monitoring section , is a positive integer greater than 2 represents the number of each upstream reservoir of the abundant monitoring section , is a positive integer greater than 2, and extract the dead storage capacity of each upstream reservoir of each abundant monitoring section and the storage water volume at the current monitoring time point , and calculate the allowable water supply of each upstream reservoir for each abundant monitoring section ; Based on the estimated water shortage of each monitoring section during the target analysis period, extract the estimated water shortage of each abundant monitoring section during the target analysis period ; Based on the allowable water supply of each upstream reservoir of each abundant monitoring section , analyze the required downstream water discharge of each upstream reservoir of each abundant monitoring section .

[0013] In step 4, screen each water conveyance reservoir. The specific screening method is as follows: Based on the storage water volume of each upstream reservoir of each monitoring section at the current monitoring time point, extract the storage water volume of each upstream reservoir of each abundant monitoring section at the current monitoring time point, and add the estimated natural water supply of each upstream reservoir of each abundant monitoring section within the target analysis time period to calculate the estimated storage water volume of each upstream reservoir of each abundant monitoring section within the target analysis time period; Obtain the threshold value of the dangerous storage water volume of each upstream reservoir of each abundant monitoring section from the local database. Compare the estimated storage water volume of each upstream reservoir of each abundant monitoring section within the target analysis time period with the threshold value of the dangerous storage water volume. If the estimated storage water volume of a certain upstream reservoir of a certain abundant monitoring section within the target analysis time period is greater than the threshold value of the dangerous storage water volume, mark this upstream reservoir as a water conveyance reservoir, so as to screen each water conveyance reservoir.

[0014] In step 4, analyze each drought monitoring section after sorting. The specific analysis method is as follows: Based on the estimated water shortage volume of each monitoring section within the target analysis time period, extract the estimated water shortage volume of each drought monitoring section within the target analysis time period , where N represents the number of each drought monitoring section , M is a positive integer greater than 2. Based on the estimated water supply volume of the upstream reservoir of each monitoring section within the target analysis time period, extract the estimated water supply volume of the upstream reservoir of each drought monitoring section within the target analysis time period, and subtract the estimated water supply volume from the estimated water shortage volume of each drought monitoring section to calculate the target water conveyance volume of each drought monitoring section ; Calculate the drought hazard coefficient of each drought monitoring section .

[0015] Screen each water conveyance monitoring section and each storage capacity regulation monitoring section, and then analyze each pressure water conveyance reservoir and each target water conveyance reservoir of each water conveyance monitoring section. The specific method is as follows: Based on the allowable water supply of each upstream reservoir of each abundant monitoring section, extract the allowable water supply of each water conveyance reservoir of each abundant monitoring section. Based on the required downstream water discharge of each upstream reservoir of each abundant monitoring section, extract the downstream water discharge of each water conveyance reservoir of each abundant monitoring section. Subtract the downstream water discharge from the allowable water supply of each water conveyance reservoir of each abundant monitoring section to calculate the allowable water conveyance volume of each water conveyance reservoir; Obtain the distances between reservoirs from the local database, extract the distances between the upstream reservoirs and the water conveyance reservoirs of each drought monitoring section, and sort them in ascending order to obtain the sorted water conveyance reservoirs for each drought monitoring section. Based on the sorted drought monitoring sections, extract the first sorted drought monitoring section. If the target water conveyance volume of the first sorted drought monitoring section is less than the allowable water conveyance value of the first sorted water conveyance reservoir, then mark the first sorted water conveyance reservoir as the target water conveyance reservoir; otherwise, compare whether the target water conveyance volume of the first sorted drought monitoring section is less than the total allowable water conveyance value of the first two sorted water conveyance reservoirs. If it is less, then uniformly mark the first two sorted water conveyance reservoirs as the target water conveyance reservoirs, and so on, so as to screen the target water conveyance reservoirs of the first sorted drought monitoring section and mark this drought monitoring section as the water conveyance monitoring section. For the second sorted drought monitoring section, exclude the target water conveyance reservoirs of the first sorted drought monitoring section from its sorted water conveyance reservoirs, and obtain the target water conveyance reservoirs of the second sorted drought monitoring section according to the method of obtaining the target water conveyance reservoirs of the first sorted drought monitoring section, and mark this drought monitoring section as the water conveyance monitoring section. If all the water conveyance reservoirs are allocated by the sorted drought monitoring sections in advance, then mark the drought monitoring sections that have not been allocated to water conveyance reservoirs as the storage capacity regulation monitoring sections. If all the water conveyance reservoirs are not allocated by the sorted drought monitoring sections, then mark the remaining unallocated water conveyance reservoirs as the pressure water conveyance reservoirs. In summary, summarize the water conveyance monitoring sections and the storage capacity regulation monitoring sections, and summarize the pressure water conveyance reservoirs and the target water conveyance reservoirs of the water conveyance monitoring sections.

[0016] In step 5, calculate the dead storage capacity regulation ratio of each storage capacity regulation monitoring section, and its specific calculation method is as follows: Based on the drought hazard coefficients of each drought monitoring section, extract the drought hazard coefficients of each storage capacity regulation monitoring section. Obtain the dead storage capacity regulation ratios of each dead storage capacity regulation coefficient interval from the local database and map them to obtain the dead storage capacity regulation ratios of each storage capacity regulation monitoring section.

[0017] The main beneficial effects of the present invention are as follows: Obtain the hydrological information of the reservoirs of each monitoring section, which is convenient for subsequent analysis.

[0018] By adjusting the parameter values of the historical hydrological data, analyze the estimated water shortage volume of each monitoring section during the target analysis time period, and improve the credibility of the data analysis results.

[0019] By conducting an overall analysis of the monitoring sections, the situation of reservoir regulation due to insufficient water supply in a single reservoir is reduced, thereby reducing resource waste. Additionally, each drought monitoring section and each abundant monitoring section are screened to facilitate subsequent analysis.

[0020] Sort and conduct reservoir regulation for each drought monitoring section. For the drought monitoring sections with severe drought, preferentially and intelligently select each target water conveyance reservoir to reduce the impact of drought. Moreover, when the drought is too severe, screen out the drought monitoring sections that cannot be allocated to a water conveyance reservoir, thus facilitating subsequent processing.

[0021] Conduct unified regulation of the dead storage capacity ratio of reservoirs for each storage capacity regulation monitoring section, and use a portion of the water volume in the dead storage capacity for water supply, thereby reducing the exacerbation of drought. Also, send each analysis data to the person in charge of the reservoir management station of each drought monitoring section to facilitate subsequent communication and regulation. Description of the Drawings

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 It is a flowchart of the present invention. Detailed Embodiment

[0024] Such as Figure 1 , a method for simulating the water storage capacity of a reservoir in a hydrological model, including the following steps: Step 1, obtaining cross-section hydrological information: Obtain the reservoir storage water volume of each upstream reservoir at each monitoring cross-section at the current monitoring time point; Step 2, cross-section hydrological analysis: Analyze the estimated water shortage volume of each monitoring cross-section within the target analysis time period; Step 3, evaluating the water release volume of the reservoir: Calculate the estimated water supply volume of the upstream reservoirs of each monitoring cross-section within the target analysis time period, screen each drought monitoring cross-section and each abundant monitoring cross-section, and analyze the required water release volume of the upstream reservoirs of each abundant monitoring cross-section; Step 4, calculating the reservoir water volume regulation: Screen each water conveyance reservoir, calculate the drought hazard coefficient of each drought monitoring cross-section, arrange each drought monitoring cross-section in descending order according to the drought hazard coefficient, thereby obtaining the sorted drought monitoring cross-sections, screen each water conveyance monitoring cross-section and each storage capacity regulation monitoring cross-section, and further analyze each target water conveyance reservoir of each pressure water conveyance reservoir and each water conveyance monitoring cross-section; Step 5, reservoir treatment: Calculate the dead storage capacity regulation ratio of each storage capacity regulation monitoring cross-section, and send the dead storage capacity regulation ratios of each target water conveyance reservoir, each pressure water conveyance reservoir, and each storage capacity regulation monitoring cross-section of each water conveyance monitoring cross-section to the person in charge of the reservoir management station of each monitoring cross-section.

[0025] Embodiment 1 Step 1. Obtaining cross-section hydrological information: Obtain the reservoir storage water volume of each upstream reservoir at each monitoring cross-section at the current monitoring time point.

[0026] In a specific embodiment, the method for obtaining the reservoir storage water volume of each upstream reservoir at each monitoring cross-section at the current monitoring time point is as follows: Obtain the reservoir storage water volume of each upstream reservoir at each monitoring cross-section from the reservoir supervision platform at the current monitoring time point.

[0027] It should be noted that each monitoring cross-section is obtained through the geographical data analysis platform.

[0028] In Step 1. Obtaining cross-section hydrological information of the present invention, the hydrological information of each reservoir at each monitoring cross-section is obtained, which is convenient for subsequent analysis.

[0029] Embodiment 2 Step 2. Cross-section hydrological analysis: Analyze the estimated water shortage volume at each monitoring cross-section within the target analysis time period.

[0030] It should be noted that for each historical target analysis time period, if the target analysis time period is July, then each historical target analysis time period is July of each past year.

[0031] In a specific embodiment of the present invention, the method for analyzing the estimated water shortage volume at each monitoring cross-section within the target analysis time period is as follows: Obtain the evaporation volume, rainfall volume, and urban water consumption volume of each monitoring cross-section from the local database within each historical target analysis time period, where x represents the number of each monitoring cross-section, y is a positive integer greater than 2, n represents the number of each historical target analysis time period, and m is a positive integer greater than 2. rainfall urban water consumption , where x represents the number of each monitoring cross-section, , y is a positive integer greater than 2, n represents the number of each historical target analysis time period, , m is a positive integer greater than 2.

[0032] Obtain each evaporation volume interval, each rainfall volume interval, and each urban water consumption volume interval from the local database, and map them to obtain the evaporation volume interval, rainfall volume interval, and urban water consumption volume interval of each monitoring cross-section within each historical target analysis time period.

[0033] Calculate the adjustment parameter values of each evaporation volume interval, each rainfall volume interval, and each urban water consumption volume interval of each monitoring cross-section, and map them to obtain the adjustment parameter values of the evaporation volume interval, rainfall volume interval, and urban water consumption volume interval of each monitoring cross-section within each historical target analysis time period. rainfall volume interval adjustment parameter values urban water consumption volume interval adjustment parameter values .

[0034] Analyze the estimated water shortage volume at each monitoring cross-section within the target analysis time period , where m represents the number of historical target analysis time periods.

[0035] It should be noted that the local database is used to store the evaporation amount, rainfall amount, urban water consumption, each evaporation amount interval, each rainfall amount interval, each urban water consumption interval, the dead storage capacity of each upstream reservoir of each monitoring section, the water supply amount of various reservoir water sources of each upstream reservoir of each monitoring section in each historical target analysis time period, the hazard storage capacity water threshold of each upstream reservoir of each abundant monitoring section, the distance between each reservoir, and the dead storage capacity adjustment ratio of each drought hazard coefficient interval.

[0036] Embodiment 3 In a specific embodiment of the present invention, the specific calculation method for calculating the tuning parameter values of each evaporation amount interval, each rainfall amount interval, and each urban water consumption interval of each monitoring section is as follows: Based on the evaporation amount interval, rainfall amount interval, and urban water consumption interval of each monitoring section in each historical target analysis time period, map to obtain each historical target analysis time period of each monitoring section in each evaporation amount interval, each historical target analysis time period in each rainfall amount interval, and each historical target analysis time period in each urban water consumption interval. Count the number of historical target analysis time periods of each monitoring section in each evaporation amount interval, the number of historical target analysis time periods in each rainfall amount interval, and the number of historical target analysis time periods in each urban water consumption interval. Count the total number of historical target analysis time periods of each monitoring section, and calculate the proportion of the number of historical target analysis time periods of each monitoring section in each evaporation amount interval, each rainfall amount interval, and each urban water consumption interval in the total number respectively, and mark them as the tuning parameter values of each evaporation amount interval, each rainfall amount interval, and each urban water consumption interval of each monitoring section respectively.

[0037] Step 2. Section hydrological analysis of the present invention adjusts the tuning parameter values through historical hydrological data, so as to analyze the estimated water shortage amount of each monitoring section in the target analysis time period and improve the credibility of the data analysis results.

[0038] Embodiment 3 Step 3. Evaluation of the water discharge amount of the reservoir: Calculate the estimated water supply amount of the upstream reservoir of each monitoring section in the target analysis time period, screen each drought monitoring section and each abundant monitoring section, and analyze the required water discharge amount of each upstream reservoir of each abundant monitoring section.

[0039] In a specific embodiment of the present invention, the specific calculation method for calculating the estimated water supply amount of the upstream reservoir of each monitoring section in the target analysis time period is as follows: Calculate the estimated natural water supply amount of each upstream reservoir of each monitoring section in the target analysis time period , where i represents the number of each upstream reservoir, , and j is a positive integer greater than 2.

[0040] Obtain the dead storage capacity of each upstream reservoir for each monitoring section from the local database .

[0041] It should be noted that the dead storage capacity represents the lowest allowable water volume of the reservoir

[0042] Based on the storage water volume of each upstream reservoir for each monitoring section at the current monitoring time point , calculate the estimated water supply volume of the upstream reservoirs for each monitoring section within the target analysis time period .

[0043] In a specific embodiment of the present invention, the specific calculation method for calculating the estimated natural water supply volume of each upstream reservoir for each monitoring section within the target analysis time period is: Obtain the water supply volume of various reservoir water sources of each upstream reservoir for each monitoring section in each historical target analysis time period from the local database , where r represents the number of various reservoir water sources , and s is a positive integer greater than 2

[0044] It should be noted that the reservoir water sources include: surface water, groundwater, rainfall, artificial water diversion and other reservoir water sources

[0045] It should be noted that the water supply volume of the reservoir water source is obtained through the geological data monitoring platform

[0046] Based on the method of calculating the adjustment parameter values for each evaporation amount interval, each rainfall amount interval, and each urban water consumption interval for each monitoring section, calculate the adjustment parameter values of the water supply volume of various reservoir water sources for each upstream reservoir of each monitoring section .

[0047] Calculate the estimated natural water supply volume of each upstream reservoir for each monitoring section within the target analysis time period .

[0048] Embodiment 4 In a specific embodiment, the specific screening method for screening each drought monitoring section and each abundant monitoring section is: Compare the estimated water shortage volume of each monitoring section within the target analysis time period with the estimated water supply volume of the upstream reservoir within the target analysis time period. If the estimated water shortage volume of a certain monitoring section within the target analysis time period is greater than the estimated water supply volume of the upstream reservoir within the target analysis time period, then mark this monitoring section as a drought monitoring section; otherwise, mark this monitoring section as an abundant monitoring section, so as to screen each drought monitoring section and each abundant monitoring section

[0049] In a specific embodiment of the present invention, for analyzing the required downstream discharge of each upstream reservoir of each abundant monitoring section, the specific analysis method is as follows: Based on the estimated natural water supply of each upstream reservoir of each monitoring section within the target analysis time period, extract the estimated natural water supply of each upstream reservoir of each abundant monitoring section within the target analysis time period , where represents each abundant monitoring section, , is a positive integer greater than 2, represents the number of each upstream reservoir of the abundant monitoring section, , is a positive integer greater than 2, and extract the dead storage capacity of each upstream reservoir of each abundant monitoring section and the reservoir water volume at the current monitoring time point , and calculate the allowable water supply of each upstream reservoir of each abundant monitoring section .

[0050] Based on the estimated water shortage of each monitoring section within the target analysis time period, extract the estimated water shortage of each abundant monitoring section within the target analysis time period .

[0051] Based on the allowable water supply of each upstream reservoir of each abundant monitoring section , analyze the required downstream discharge of each upstream reservoir of each abundant monitoring section .

[0052] Step 3. Evaluation of reservoir downstream discharge of the present invention, through overall analysis of the monitoring sections, reduces the situation of reservoir scheduling due to insufficient water supply of a single reservoir, thereby reducing waste of resources, and screening each arid monitoring section and each abundant monitoring section for convenient subsequent analysis.

[0053] Example 5 Step 4. Calculation of reservoir water volume regulation: Screen each water conveyance reservoir, calculate the drought hazard coefficient of each arid monitoring section, arrange each arid monitoring section in descending order according to the drought hazard coefficient to obtain the sorted arid monitoring sections, screen each water conveyance monitoring section and each reservoir capacity regulation monitoring section, and then analyze each pressure water conveyance reservoir and each target water conveyance reservoir of each water conveyance monitoring section.

[0054] In a specific embodiment of the present invention, for screening each water conveyance reservoir, the specific screening method is as follows: Based on the storage water volume of each upstream reservoir at each monitoring section at the current monitoring time point, extract the storage water volume of each upstream reservoir at each abundant monitoring section at the current monitoring time point, and add the estimated natural water supply of each upstream reservoir at each abundant monitoring section within the target analysis time period to calculate the estimated storage water volume of each upstream reservoir at each abundant monitoring section within the target analysis time period.

[0055] Obtain the threshold value of the dangerous storage water volume of each upstream reservoir at each abundant monitoring section from the local database. Compare the estimated storage water volume of each upstream reservoir at each abundant monitoring section within the target analysis time period with the threshold value of the dangerous storage water volume. If the estimated storage water volume of a certain upstream reservoir at a certain abundant monitoring section within the target analysis time period is greater than the threshold value of the dangerous storage water volume, then mark this upstream reservoir as a water conveyance reservoir, thereby screening each water conveyance reservoir.

[0056] Example 6 In a specific embodiment of the present invention, for analyzing each drought monitoring section after sorting, the specific analysis method is as follows: Based on the estimated water shortage volume of each monitoring section within the target analysis time period, extract the estimated water shortage volume of each drought monitoring section within the target analysis time period , where N represents the number of each drought monitoring section, , M is a positive integer greater than 2. Based on the estimated water supply volume of the upstream reservoir of each monitoring section within the target analysis time period, extract the estimated water supply volume of the upstream reservoir of each drought monitoring section within the target analysis time period. Subtract the estimated water supply volume from the estimated water shortage volume of each drought monitoring section to calculate the target water conveyance volume of each drought monitoring section .

[0057] Calculate the drought hazard coefficient of each drought monitoring section .

[0058] Example 7 In a specific embodiment of the present invention, for screening each water conveyance monitoring section and each storage capacity regulation monitoring section, and then analyzing each target water conveyance reservoir of each pressure water conveyance reservoir and each water conveyance monitoring section, the specific method is as follows: Based on the allowable water supply volume of each upstream reservoir at each abundant monitoring section, extract the allowable water supply volume of each water conveyance reservoir at each abundant monitoring section. Based on the required downstream water discharge volume of each upstream reservoir at each abundant monitoring section, extract the downstream water discharge volume of each water conveyance reservoir at each abundant monitoring section. Subtract the downstream water discharge volume from the allowable water supply volume of each water conveyance reservoir at each abundant monitoring section to calculate the allowable water conveyance volume of each water conveyance reservoir.

[0059] Obtain the distances between reservoirs from the local database, extract the distances between each upstream reservoir and each water conveyance reservoir of each drought monitoring section, and sort them in ascending order to obtain the sorted water conveyance reservoirs of each drought monitoring section.

[0060] Based on the sorted drought monitoring sections, extract the first sorted drought monitoring section. If the target water conveyance volume of the first sorted drought monitoring section is less than the allowable water conveyance value of the first sorted water conveyance reservoir, then mark the first sorted water conveyance reservoir as the target water conveyance reservoir; otherwise, compare whether the target water conveyance volume of the first sorted drought monitoring section is less than the total allowable water conveyance value of the first two sorted water conveyance reservoirs. If it is less, then uniformly mark the first two sorted water conveyance reservoirs as the target water conveyance reservoirs, and so on, so as to screen out the target water conveyance reservoirs of the first sorted drought monitoring section and mark this drought monitoring section as the water conveyance monitoring section.

[0061] For the second sorted drought monitoring section, exclude the target water conveyance reservoirs of the first sorted drought monitoring section from its sorted water conveyance reservoirs, and obtain the target water conveyance reservoirs of the second sorted drought monitoring section according to the method of obtaining the target water conveyance reservoirs of the first sorted drought monitoring section, and mark this drought monitoring section as the water conveyance monitoring section.

[0062] If all water conveyance reservoirs have been allocated by the sorted drought monitoring sections in advance, then mark the drought monitoring sections that have not been allocated to water conveyance reservoirs as the storage capacity regulation monitoring sections.

[0063] If all water conveyance reservoirs have not been allocated by the sorted drought monitoring sections, then mark the remaining unallocated water conveyance reservoirs as the pressure water conveyance reservoirs.

[0064] In summary, summarize each water conveyance monitoring section and each storage capacity regulation monitoring section, and summarize each pressure water conveyance reservoir and the target water conveyance reservoirs of each water conveyance monitoring section.

[0065] Example 8 Step 4. Calculation of reservoir water volume regulation in the present invention: Sort and dispatch reservoirs for each drought monitoring section. The monitoring sections with severe drought are preferentially and intelligently selected for each target water conveyance reservoir to reduce the impact of drought. And when the drought is too severe, screen out the drought monitoring sections that cannot be allocated to water conveyance reservoirs, so as to facilitate subsequent processing.

[0066] Step 5. Reservoir treatment: Calculate the dead storage capacity regulation ratio of each storage capacity regulation monitoring section, and send the target water conveyance reservoirs of each water conveyance monitoring section, each pressure water conveyance reservoir, and the dead storage capacity regulation ratio of each storage capacity regulation monitoring section to the person in charge of the reservoir management station of each monitoring section.

[0067] In a specific embodiment of the present invention, the method for calculating the dead storage capacity regulation ratio of each reservoir capacity regulation monitoring section is as follows: According to the drought hazard coefficients of each drought monitoring section, the drought hazard coefficients of each reservoir capacity regulation monitoring section are extracted.

[0068] Obtain the dead storage capacity regulation ratio of each interval of drought hazard coefficients from the local database, and map to obtain the dead storage capacity regulation ratio of each reservoir capacity regulation monitoring section.

[0069] Step 5. Reservoir treatment of the present invention: uniformly adjust the proportion of the dead storage capacity of each reservoir capacity regulation monitoring section, and use a part of the water volume of the dead storage capacity for water supply, so as to reduce the aggravation of drought, and send each analysis data to the person in charge of the reservoir management station of each drought monitoring section for subsequent communication and scheduling.

[0070] In the above technical solution, by adjusting the parameter values of historical hydrological data, the credibility of the data analysis results is improved. By comprehensively analyzing the monitoring sections, the situation of conducting reservoir scheduling due to insufficient water supply in a single reservoir is reduced, thereby reducing waste of resources. Sorting and reservoir scheduling are carried out for each drought monitoring section to reduce the impact of drought. When the drought is too severe, the drought monitoring sections that cannot be assigned to the water conveyance reservoir are screened out, and a unified adjustment of the proportion of the dead storage capacity of the reservoir is carried out for the drought monitoring sections that cannot be assigned to the water conveyance reservoir, so as to reduce the aggravation of drought.

[0071] Obtain the hydrological information of each reservoir of each monitoring section for subsequent analysis.

[0072] By adjusting the parameter values of historical hydrological data, the estimated water shortage of each monitoring section during the target analysis time period is analyzed, and the credibility of the data analysis results is improved.

[0073] By comprehensively analyzing the monitoring sections, the situation of conducting reservoir scheduling due to insufficient water supply in a single reservoir is reduced, thereby reducing waste of resources, and screening each drought monitoring section and each abundant monitoring section for subsequent analysis.

[0074] Sorting and reservoir scheduling are carried out for each drought monitoring section. The drought monitoring sections with severe drought are preferentially and intelligently selected for each target water conveyance reservoir to reduce the impact of drought. When the drought is too severe, the drought monitoring sections that cannot be assigned to the water conveyance reservoir are screened out for subsequent processing.

[0075] Uniformly adjust the proportion of the dead storage capacity of each reservoir capacity regulation monitoring section, and use a part of the water volume of the dead storage capacity for water supply, so as to reduce the aggravation of drought, and send each analysis data to the person in charge of the reservoir management station of each drought monitoring section for subsequent communication and scheduling.

[0076] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. In the present application, the embodiments and the features in the embodiments can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for simulating water storage capacity of a hydrological model reservoir, characterized in that: The steps include: Step 1, cross-section hydrological information acquisition: obtain the storage capacity of each upstream reservoir of each monitoring section at the current monitoring time point; Step 2, cross-section hydrological analysis: Analyze the estimated water shortage of each monitoring section within the target analysis time period; Step 3: Assessment of water discharge from reservoirs: Calculate the estimated water supply of the upstream reservoirs of each monitoring section within the target analysis period, select each drought monitoring section and each abundant monitoring section, and analyze the required water discharge of each upstream reservoir of each abundant monitoring section; Step 4, reservoir water regulation calculation: screen each water transfer reservoir, calculate the drought hazard coefficient of each drought monitoring section, arrange each drought monitoring section from large to small according to the drought hazard coefficient, thereby obtaining the sorted drought monitoring sections, screen each water transfer monitoring section and each storage capacity regulation monitoring section, and then analyze each pressure water transfer reservoir and each target water transfer reservoir of each water transfer monitoring section; Step 5, reservoir processing: calculate the dead storage capacity regulation ratio of each storage capacity regulation monitoring section, and send the dead storage capacity regulation ratio of each target water transfer reservoir, each pressure water transfer reservoir and each storage capacity regulation monitoring section of each water transfer monitoring section to the person in charge of the reservoir management station of each monitoring section.

2. The method for simulating water storage capacity of a hydrological model reservoir according to claim 1, characterized in that: In step 2, the estimated water shortage of each monitoring section within the target analysis time period is analyzed. The specific analysis method is as follows: Obtain the evaporation of each monitoring section in each historical target analysis time period from the local database , rainfall , Urban water consumption , where x represents the number of each monitoring section, , y is a positive integer greater than 2, n represents the number of each historical target analysis time period, , m is a positive integer greater than 2; Obtain each evaporation interval, each rainfall interval, and each urban water consumption interval from the local database, and map the evaporation interval, rainfall interval, and urban water consumption interval of each monitoring section in each historical target analysis time period; Calculate the parameter adjustment values ​​of each evaporation interval, each rainfall interval, and each urban water consumption interval of each monitoring section, and map the parameter adjustment values ​​of the evaporation interval of each monitoring section in each historical target analysis time period. , Adjustment parameter value of rainfall range , Adjustment parameter value of urban water consumption range ; Analyze the estimated water shortage of each monitoring section during the target analysis period , where m represents the number of historical target analysis time periods.

3. The method for simulating water storage capacity of a hydrological model reservoir according to claim 2, characterized in that: Calculate the parameter adjustment value of each evaporation interval, the parameter adjustment value of each rainfall interval, and the parameter adjustment value of each urban water consumption interval of each monitoring section. The specific calculation method is: According to the evaporation interval, rainfall interval and urban water consumption interval of each monitoring section in each historical target analysis time period, each historical target analysis time period in each evaporation interval, each historical target analysis time period in each rainfall interval and each historical target analysis time period in each urban water consumption interval of each monitoring section are mapped, the number of historical target analysis time periods in each evaporation interval, the number of historical target analysis time periods in each rainfall interval and the number of historical target analysis time periods in each urban water consumption interval of each monitoring section are counted, the total number of historical target analysis time periods of each monitoring section is counted, the proportion of the number of historical target analysis time periods in each evaporation interval, each rainfall interval and each urban water consumption interval of each monitoring section to the total number is calculated respectively, and they are marked as the adjustment parameter value of each evaporation interval, the adjustment parameter value of each rainfall interval and the adjustment parameter value of each urban water consumption interval of each monitoring section respectively.

4. The method for simulating water storage capacity of a hydrological model reservoir according to claim 2, characterized in that: Calculate the estimated water supply of the upstream reservoir of each monitoring section within the target analysis time period. The specific calculation method is as follows: Calculate the estimated natural water supply of each upstream reservoir in each monitoring section during the target analysis time period , where i represents the number of each upstream reservoir, , j is a positive integer greater than 2; Obtain the dead storage capacity of each upstream reservoir in each monitoring section from the local database ; Based on the storage capacity of each upstream reservoir at each monitoring section at the current monitoring time point , calculate the estimated water supply of the upstream reservoir of each monitoring section during the target analysis time period .

5. The method for simulating water storage capacity of a hydrological model reservoir according to claim 4, characterized in that: Calculate the estimated natural water supply of each upstream reservoir of each monitoring section within the target analysis time period. The specific calculation method is as follows: Obtain the water supply of various reservoir water sources of each upstream reservoir in each monitoring section in each historical target analysis time period from the local database , where r represents the number of each type of reservoir water source, , s is a positive integer greater than 2; Based on the method of calculating the parameter adjustment values ​​of each evaporation interval, each rainfall interval, and each urban water consumption interval of each monitoring section, the parameter adjustment values ​​of the water supply of various reservoir water sources of each upstream reservoir of each monitoring section are calculated. ; Calculate the estimated natural water supply of each upstream reservoir in each monitoring section during the target analysis time period .

6. The method for simulating water storage capacity of a hydrological model reservoir according to claim 4, characterized in that: Analyze the required discharge volume of each upstream reservoir in each Fengpei monitoring section. The specific analysis method is as follows: According to the estimated natural water supply of each upstream reservoir of each monitoring section during the target analysis period, the estimated natural water supply of each upstream reservoir of each Fengpei monitoring section during the target analysis period is extracted. ,in Represents each Fengpei monitoring section, , is a positive integer greater than 2, Indicates the numbers of the upstream reservoirs of the Fengpei monitoring section. , is a positive integer greater than 2, and the dead storage capacity of each upstream reservoir of each Fengpei monitoring section is extracted and the reservoir water capacity at the current monitoring time point , calculate the allowable water supply of each upstream reservoir of each Fengpei monitoring section ; According to the estimated water shortage of each monitoring section during the target analysis period, the estimated water shortage of each Fengpei monitoring section during the target analysis period is extracted. ; Based on the allowable water supply of each upstream reservoir at each Fengpei monitoring section , analyze the required discharge volume of each upstream reservoir in each Fengpei monitoring section .

7. The method for simulating water storage capacity of a hydrological model reservoir according to claim 1, characterized in that: In step 4, each water transfer reservoir is screened, and the specific screening method is as follows: According to the storage capacity of each upstream reservoir of each monitoring section at the current monitoring time point, extract the storage capacity of each upstream reservoir of each Fengpei monitoring section at the current monitoring time point, and add the estimated natural water supply of each upstream reservoir of each Fengpei monitoring section in the target analysis time period, and calculate the estimated storage capacity of each upstream reservoir of each Fengpei monitoring section in the target analysis time period; The hazardous reservoir water capacity threshold of each upstream reservoir of each Fengpei monitoring section is obtained from the local database, and the estimated reservoir water capacity of each upstream reservoir of each Fengpei monitoring section during the target analysis time period is compared with the hazardous reservoir water capacity threshold. If the estimated reservoir water capacity of an upstream reservoir of a Fengpei monitoring section during the target analysis time period is greater than the hazardous reservoir water capacity threshold, the upstream reservoir is marked as a water transfer reservoir, thereby screening the water transfer reservoirs.

8. The method for simulating water storage capacity of a hydrological model reservoir according to claim 1, characterized in that: In step 4, the sorted drought monitoring sections are analyzed, and the specific analysis method is as follows: According to the estimated water shortage of each monitoring section in the target analysis time period, the estimated water shortage of each drought monitoring section in the target analysis time period is extracted. , where N represents the number of each drought monitoring section, , M is a positive integer greater than 2. According to the estimated water supply of the upstream reservoir of each monitoring section during the target analysis period, the estimated water supply of the upstream reservoir of each drought monitoring section during the target analysis period is extracted, and the estimated water shortage of each drought monitoring section is subtracted from the estimated water supply to calculate the target water delivery of each drought monitoring section. ; Calculate the drought hazard coefficient of each drought monitoring section .

9. The method for simulating water storage capacity of a hydrological model reservoir according to claim 8, characterized in that: Each water transfer monitoring section and each storage capacity regulation monitoring section, and then analyze each pressure water transfer reservoir and each target water transfer reservoir of each water transfer monitoring section. The specific method is as follows: According to the allowable water supply of each upstream reservoir of each Fengpei monitoring section, the allowable water supply of each water transfer reservoir of each Fengpei monitoring section is extracted; according to the required discharge water volume of each upstream reservoir of each Fengpei monitoring section, the discharge water volume of each water transfer reservoir of each Fengpei monitoring section is extracted; the allowable water supply of each water transfer reservoir of each Fengpei monitoring section is deducted from the discharge water volume, and the allowable water transfer volume of each water transfer reservoir is calculated; The distances between the reservoirs are obtained from the local database, and the distances between the upstream reservoirs and the water transfer reservoirs of each drought monitoring section are extracted, and the distances are sorted from small to large, so as to obtain the sorted water transfer reservoirs of each drought monitoring section; According to the drought monitoring sections after sorting, the first drought monitoring section is extracted. If the target water transfer volume of the first drought monitoring section is less than the allowable water transfer value of the first water transfer reservoir, the first water transfer reservoir is marked as the target water transfer reservoir. Otherwise, it is compared whether the target water transfer volume of the first drought monitoring section is less than the total allowable water transfer value of the first two water transfer reservoirs. If it is less than, the first two water transfer reservoirs are uniformly marked as the target water transfer reservoirs. And so on, so as to screen the target water transfer reservoirs of the first drought monitoring section, and mark this drought monitoring section as the water transfer monitoring section. For the drought monitoring section ranked second, exclude the target water transfer reservoirs of the drought monitoring section ranked first from the ranked water transfer reservoirs thereof, and obtain the target water transfer reservoirs of the drought monitoring section ranked second according to the method of obtaining the target water transfer reservoirs of the drought monitoring section ranked first, and mark this drought monitoring section as a water transfer monitoring section; If the drought monitoring sections that have been sorted in advance for each water transfer reservoir have been allocated, the drought monitoring sections that have not been allocated to the water transfer reservoir will be marked as the storage capacity adjustment monitoring sections; If the drought monitoring sections after the water transfer reservoirs have not been sorted have been allocated, the remaining unallocated water transfer reservoirs will be marked as pressure water transfer reservoirs; In summary, each water transfer monitoring section and each reservoir capacity regulation monitoring section are summarized, and each pressure water transfer reservoir and each target water transfer reservoir of each water transfer monitoring section are summarized.

10. The method for simulating water storage capacity of a hydrological model reservoir according to claim 1, characterized in that: In step 5, the dead storage capacity regulation ratio of each storage capacity regulation monitoring section is calculated, and the specific calculation method is: According to the drought hazard coefficient of each drought monitoring section, the drought hazard coefficient of each reservoir capacity regulation monitoring section is extracted; The dead storage capacity adjustment ratio of each drought hazard coefficient interval is obtained from the local database, and the dead storage capacity adjustment ratio of each storage capacity adjustment monitoring section is mapped.

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