Design method and system of artificial flood peak ecological regulation process of adaptive inflow process

Abstract

The application provides a reservoir artificial flood peak ecological regulation process design method of an adaptive water inflow process, comprising the following steps: collecting artificial flood peak ecological regulation process parameters and comprehensive utilization demand constraints of an ecological regulation period; setting an upper limit of the demand degree of the artificial flood peak ecological regulation parameters; calculating an inflow sequence of an upstream reservoir after regulation and storage; calculating available water inflow and available water; determining upper and lower limits of the water demand of the artificial flood peak regulation process; determining an outflow sequence of the artificial flood peak regulation process; checking whether the outflow sequence meets other comprehensive utilization demand constraints, and adjusting the outflow process; and judging whether the artificial flood peak ecological regulation process is guaranteed. The application can flexibly adjust the outflow of the reservoir according to the actual water inflow, can realize the optimal allocation and efficient utilization of water resources, and provides support for the formulation of a reservoir ecological regulation scheme.

Description

Technical Field

[0001] This invention belongs to the field of reservoir ecological scheduling, and in particular relates to a design method for an ecological scheduling process of artificial flood peaks that adapts to the inflow process. Background Technology

[0002] Reservoirs, as crucial water conservancy projects, play a vital role in flood control, power generation, water resource management, and navigation by regulating water levels during rainy and dry seasons. However, the construction and operation of reservoirs also alter natural hydrological processes such as river runoff, water depth, and heat transfer, potentially impacting aquatic habitats and the reproduction of aquatic organisms. To alleviate the pressure on river ecosystems caused by dam construction and operation and to promote river ecological restoration, ecological regulation has become a crucial measure.

[0003] Artificial flood peak ecological regulation typically refers to the process of regulating reservoir outflow to simulate the natural rise in river water levels and promote the natural reproduction of drifting fish downstream of the dam. Currently, the Three Gorges Reservoir in the middle reaches of the Yangtze River and the cascade reservoirs in the lower reaches of the Jinsha River have routinely conducted artificial flood peak ecological regulation experiments, and many large reservoirs in China also have similar provisions in their regulation procedures. Because reservoir regulation alters the natural runoff process, existing artificial flood peak processes mostly regulate the outflow process according to specific or single parameters, lacking comprehensive consideration of different inflow conditions and the reservoir's own operational status. Therefore, how to comprehensively consider factors such as reservoir inflow, the reservoir's own regulation capacity, water level constraints during the regulation period, and other comprehensive utilization needs to rationally design artificial flood peak processes, so as to avoid reservoir water wastage during periods of abundant inflow or excessively low water levels during periods of low inflow, thus affecting the reservoir's comprehensive benefits, is one of the important requirements for reservoir ecological regulation.

[0004] This invention addresses the aforementioned technical challenges and needs. Based on the ecological scheduling requirements and comprehensive utilization requirements of artificial floods in reservoirs during scheduling periods, and combined with the reservoir's inflow process and storage status, it provides an adaptive ecological scheduling process for artificial flood peaks. This process can flexibly adjust the reservoir's outflow according to the actual inflow situation, conforming to the characteristics of actual reservoir scheduling and operation, while simultaneously achieving optimized allocation and efficient utilization of water resources, thus providing support for scheduling decisions. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a design method for an adaptive artificial flood peak ecological scheduling process, which aims to solve the technical problem that the existing artificial flood peak ecological scheduling process confirmation method may cause excessively low drawdown or water abandonment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A design method for an adaptive artificial flood peak ecological scheduling process includes the following steps: Step 1. Collect parameters of the artificial flood peak ecological scheduling process and the comprehensive utilization demand constraints of the ecological scheduling period in the reservoir scheduling regulations; Step 2. Based on the upper and lower limits of the parameters for the ecological scheduling process of artificial flood peaks in the reservoir scheduling regulations, set the upper limit of the demand for the ecological scheduling parameters of artificial flood peaks; Step 3. Considering the regulation and storage effect of the upstream reservoir, calculate the inflow sequence after regulation and storage by the upstream reservoir; Step 4. Based on the parameters of the artificial flood peak ecological scheduling process, the inflow after upstream reservoir regulation, and the reservoir's own available storage water volume under the premise of meeting the upper and lower limit water level constraints during the scheduling period, obtain the available inflow and available water volume. Step 5. Based on the relevant provisions of the reservoir operation regulations regarding the ecological operation of artificial flood peaks, determine the upper and lower limits of water demand for the artificial flood peak operation process; Step 6. Determine the outflow sequence for the artificial flood peak scheduling process based on the upper and lower limits of available inflow and water demand during the artificial flood peak scheduling process: Step 7. Check whether the outbound flow sequence meets other comprehensive utilization requirements and adjust the outbound flow process accordingly: Step 8. Calculate the initial flow guarantee degree and the rise guarantee degree of the artificial flood peak ecological scheduling process, and determine whether the artificial flood peak ecological scheduling process is guaranteed.

[0007] Furthermore, the parameters of the artificial flood peak ecological scheduling process in the scheduling procedure in step 1 include: scheduling duration in days, initial rise flow, rise duration, flow rate increase, peak flow, receding duration, and flow rate decrease. The constraints on comprehensive utilization requirements include upper and lower limits of reservoir water level and outflow.

[0008] Furthermore, the upper limit of the demand for the artificial flood peak ecological scheduling parameters in step 2 includes the upper limit of the demand for the initial rise in flow and the upper limit of the demand for the increase in flow:

[0009] In the formula, This is the upper limit of the initial increase in traffic demand. This refers to the upper limit of the starting flow rate for the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the starting flow rate for the artificial flood peak ecological dispatching process as specified in the dispatching regulations; The upper limit of the demand for traffic growth. This refers to the upper limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations.

[0010] Furthermore, the available water volume in step 4 and available water volume The calculation method is as follows:

[0011] In the formula, The average inbound flow rate per unit time. T This refers to the number of days that the ecological scheduling process takes. W The available water storage capacity of the reservoir itself. This represents the reservoir capacity at the highest water level. This represents the reservoir capacity at the initial water level.

[0012] Furthermore, in step 5, determining the upper and lower limits of water demand for the artificial flood peak scheduling process includes: (1) If the reservoir operation regulations stipulate that artificial flood peak ecological operation is carried out with reference to the design flood hydrograph of a certain return period, then the upper and lower limits of water demand in the artificial flood peak ecological operation process are as follows:

[0013] (2) If the reservoir operation regulations do not specify a typical flood hydrograph for reference, but only specify the upper and lower limits of the starting flow and the flow rate increase, the upper and lower limits of the water demand for the artificial flood peak ecological operation process are calculated as follows:

[0014] In the formula, This represents the lower limit of water demand during the ecological regulation of artificial flood peaks. This represents the upper limit of water demand during the ecological regulation of artificial flood peaks. For the peak flow, This refers to the lower limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the upper limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the number of days it takes for the flood peak to occur.

[0015] Furthermore, step 6 determines that the outflow from the reservoir during the artificial flood peak scheduling process includes: (1) If the available water volume Within the water demand range [ Within this area, all incoming water will be used for ecological management. (2) If the available water volume Greater than the upper limit of water demand The outflow of the artificial flood peak scheduling process shall be determined according to the upper limit of the parameters of the artificial flood peak ecological scheduling process in the reservoir scheduling regulations, and the stored water volume and reservoir water level shall be calculated to see if they exceed the limit. (3) If the total available water volume Less than the lower limit of water demand The outflow of the artificial flood peak scheduling process is determined according to the lower limit of the parameters of the artificial flood peak ecological scheduling process in the reservoir scheduling regulations, and the water replenishment is calculated, as well as whether it is necessary to return the water to the reservoir in advance.

[0016] Further, step 7 involves checking the outbound flow sequence. Whether other comprehensive utilization needs are met, and the process of appropriately adjusting the outbound flow rate, includes:

[0017] In the formula, To adjust the ecological scheduling process of artificial flood peaks t Daily outbound flow , These are the upper and lower limits of the outflow constraint specified in the reservoir operation regulations.

[0018] Furthermore, in step 8, the starting flow guarantee degree of the artificial flood peak ecological scheduling process. and the degree of guarantee for price increases :

[0019] In the formula, To design the initial flow rate for the ecological regulation process of artificial flood peaks, To design the upper limit of flow rate increase in the ecological scheduling process of artificial flood peaks.

[0020] Furthermore, step 8, determining whether the ecological scheduling process of the artificial flood peak is guaranteed, includes: when and In the interval [1, ... ] and [1, If the time frame is within a certain range, it indicates that the ecological regulation process of artificial flood peaks can be guaranteed. It can be used as the outflow from the reservoir in the ecological scheduling process of artificial flood peaks.

[0021] On the other hand, the present invention provides a design system for an adaptive artificial flood peak ecological scheduling process, comprising: Parameter collection module: It is used to collect parameters of the artificial flood peak ecological scheduling process and the comprehensive utilization demand constraints of the ecological scheduling period in the reservoir scheduling procedure; Demand Calculation Module: It is used to set the upper and lower limits of the demand for artificial flood peak ecological scheduling parameters based on the upper and lower limits of the parameters in the reservoir scheduling procedure. Inflow calculation module: It is used to calculate the inflow sequence after upstream reservoir regulation, taking into account the regulation effect of upstream reservoir; Available inflow and available water volume calculation module: It is used to obtain available inflow and available water volume based on the parameters of the artificial flood peak ecological scheduling process, the inflow sequence after upstream reservoir regulation, and the available storage water volume of the reservoir itself under the premise of meeting the upper and lower limit water level constraints during the scheduling period. Water demand upper and lower limit determination module: It is used to determine the upper and lower limits of water demand in the artificial flood peak scheduling process according to the relevant provisions of the reservoir scheduling regulations. Outflow determination module: It is used to determine the outflow sequence of the artificial flood peak scheduling process based on the upper and lower limits of the available water volume and the water demand of the artificial flood peak scheduling process; Outbound flow adjustment module: It is used to check whether the outbound flow sequence meets other comprehensive utilization requirements and adjust the outbound flow process; Judgment module: It is used to calculate the guarantee degree of the starting flow and the guarantee degree of the rise in the artificial flood peak ecological scheduling process, and to determine whether the artificial flood peak ecological scheduling process is guaranteed.

[0022] Compared with the prior art, the present invention has the following beneficial effects: Taking into account both the ecological scheduling needs of artificial floods in reservoirs and the comprehensive utilization needs during the scheduling period, and combining the reservoir's inflow process and storage status, an ecological scheduling process for artificial flood peaks that adapts to the inflow process is proposed. This avoids water wastage in reservoirs when inflow is too high, or excessively low water level drop when inflow is too low, thereby improving the comprehensive benefits of reservoirs in terms of ecology, power generation, and flood control. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 The present invention provides a flowchart of a design method for an adaptive artificial flood peak ecological scheduling process.

[0025] Figure 2 The implementation plan includes the design flood process for Reservoir A in mid-May and the ecological scheduling process for the designed artificial flood peak.

[0026] Figure 3In Implementation Plan 2, the B reservoir is designed with an artificial flood peak ecological scheduling process in mid-June. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] refer to Figure 1 This invention provides a design for an adaptive artificial flood peak ecological scheduling process, comprising: (1) Collect and determine the parameters of the artificial flood peak ecological scheduling process in the reservoir scheduling procedure, including the scheduling duration in days, the initial flow rate, the duration of the rise, the flow rate increase, the flood peak flow, the duration of the receding water, the flow rate decrease, etc., and collect the requirements of the comprehensive utilization demand for the start of the ecological scheduling period on the reservoir water level and the outflow flow. (2) Define the demand degree of various parameters for ecological scheduling of artificial flood peaks; The specific method for defining the upper limit of the demand for various parameters of the artificial flood peak ecological scheduling described in step (2) is as follows: Based on the upper and lower limits of parameters for the ecological scheduling process of artificial flood peaks stipulated in the reservoir scheduling regulations, we obtain:

[0029] In the formula, This is the upper limit of the initial increase in traffic demand. This refers to the upper limit of the starting flow rate for the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the starting flow rate for the artificial flood peak ecological dispatching process as specified in the dispatching regulations; The upper limit of the demand for traffic growth. This refers to the upper limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations.

[0030] Among them, the minimum demand level is achieved when the minimum initial flow rate and minimum flow rate increase specified in the regulations are met. and Both are 1, representing the lower limit of the demand level. The highest demand level is obtained when the maximum initial flow rate and maximum flow rate increase specified in the regulations are met. and , which is the upper limit of demand.

[0031] (3) Considering the regulation and storage effect of upstream reservoirs (groups), estimate the inflow after regulation and storage of upstream reservoirs (groups); The method for estimating the inflow after regulation by the upstream reservoirs (groups) in step (3) is as follows:

[0032] In the formula, For the reservoir t Daily inbound flow For the upstream reservoir t - d Daily outbound flow d The propagation time of flow from the upstream reservoir to the downstream reservoir. This refers to the runoff process generated between the upstream and downstream reservoirs.

[0033] (4) Calculate the available water volume and available water volume during the ecological scheduling process of artificial flood peak; The specific method for calculating the available water volume and usable water volume in the artificial flood peak ecological scheduling process described in step (4) is as follows: Based on the duration of the ecological regulation process of artificial flood peak T Inbound flow The available inflow volume is obtained by considering the reservoir's own available storage water volume under the premise of meeting the upper and lower water level constraints during the scheduling period. and available water volume :

[0034] In the formula, The total available water volume during the ecological scheduling process of artificial flood peaks. The average inbound flow rate per unit time. T This represents the total number of days in the ecological scheduling process. The total available water volume during the ecological scheduling process of artificial flood peaks. W This refers to the reservoir's own available water storage capacity.

[0035] (5) Determine the upper and lower limits of water demand during the artificial flood peak scheduling process; The specific method for determining the upper and lower limits of water demand in the artificial flood peak scheduling process, as described in step (5), is as follows: If the regulations stipulate that artificial flood peak ecological scheduling should be carried out with reference to the design flood hydrograph of a certain return period, the peak flow rate will generally be specified. The starting flow range [ ], Traffic growth range and the range of traffic decrease [ Based on this, the upper and lower limits of water demand for the ecological regulation process of artificial flood peaks are calculated as follows:

[0036] In the formula, and This refers to the upper and lower limits of water demand during the ecological regulation of artificial flood peaks. To design the peak flow rate of a flood event, This is the upper limit for the increase in traffic volume. This refers to the lower limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the upper limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the number of days it takes for the flood peak to occur.

[0037] If the reservoir operation regulations do not specify a typical flood hydrograph for reference, but only specify the starting flow rate and the range of flow rate increase, then the upper and lower limits of water demand for the artificial flood peak ecological operation process are calculated as follows:

[0038] If the total available water volume Within the total water demand range [ Within [the specified range], determine the outflow rate during the artificial flood peak scheduling process; The specific method for determining the outflow during the artificial flood peak scheduling process is as follows: For example, reservoir operation regulations may stipulate that artificial flood peak ecological operation should be carried out with reference to the design flood hydrograph of a certain return period, based on the design flood hydrograph. Determine the ecological scheduling process of artificial flood peaks:

[0039] In the formula, To design the total flood volume of the flood process, To design the flow rate of the flood process, This is the magnification factor. The first step in the ecological scheduling of artificial flood peaks t Daily outbound flow.

[0040] If the reservoir operation regulations do not specify a typical flood process line for reference, but only specify the starting flow rate and the range of flow rate increase, then the artificial flood peak ecological operation process shall be determined according to the following steps.

[0041] ① Based on the upper and lower limits of the initial flow rate, the flow rate increase, and the flow rate decrease, determine the upper and lower limits of the outflow flow during the ecological scheduling process of the artificial flood peak:

[0042] In the formula, , The first step in the ecological scheduling process of artificial flood peaks tThe upper and lower limits of the daily outbound flow.

[0043] ②Based on the total water consumption and available water volume, the outflow rate during the ecological regulation process of the artificial flood peak is obtained:

[0044] In the formula, This is the magnification factor.

[0045] If the total available water volume Greater than the upper limit of water demand To determine the outflow during the artificial flood peak scheduling process, and to calculate whether the stored water volume and reservoir water level exceed the limit; The specific methods for determining the outflow from the reservoir during the artificial flood peak scheduling process, calculating the stored water volume, and judging whether the reservoir water level exceeds the limit are as follows: If the reservoir operation regulations stipulate that artificial flood peak ecological operation should be carried out with reference to the design flood hydrograph of a certain return period, then the operation should be based on the design flood hydrograph. Lower limit of traffic growth Lower limit of traffic reduction Determine the ecological scheduling process of artificial flood peaks:

[0046] If the reservoir operation regulations do not specify a typical flood hydrograph for reference, but only specify the starting flow rate and the range of flow rate increase, then the upper limit of the starting flow rate shall be used. Traffic increase limit Lower limit of traffic reduction Determine the ecological scheduling process of artificial flood peaks:

[0047] In both of the above cases, the excess water must be stored in the reservoir, and it must be determined whether the reservoir's water level exceeds the constraints.

[0048] In the formula, For the amount of water that needs to be stored, , The initial and final water levels during the ecological regulation process of artificial flood peaks. For water storage The resulting rise in water level.

[0049] Based on the different inflow conditions of abundant, normal, and low water levels, water level constraints are set to adapt to these conditions. ,if Water level constraints exceeding those specified in the regulations In this case, it is necessary to release water in advance to lower the reservoir water level. The total amount of water pre-discharged is The corresponding amount of water.

[0050] If the total available water volume Small At the lower limit of water demand To determine the outflow during the artificial flood peak scheduling process, calculate the water replenishment volume, and determine whether it is necessary to return the water to the reservoir in advance; The specific methods for determining the outflow from the reservoir during the artificial flood peak scheduling process, calculating the replenishment volume, and judging whether early return to storage is necessary are as follows: If the reservoir operation regulations stipulate that artificial flood peak ecological operation should be carried out with reference to the design flood hydrograph of a certain return period, then the operation should be based on the design flood hydrograph. Traffic increase limit Maximum reduction in traffic volume Determine the ecological scheduling process of artificial flood peaks:

[0051] If the reservoir operation regulations do not specify a typical flood hydrograph for reference, but only specify the starting flow rate and the range of flow rate increase, then the lower limit of the starting flow rate shall be used. Lower limit of traffic growth Maximum reduction in traffic volume Determine the ecological scheduling process of artificial flood peaks:

[0052] At this point, it is necessary to utilize the water already stored in the reservoir or to replenish it in advance to meet the water demand of the ecological regulation process. The required water replenishment amount and the number of days for replenishment are as follows:

[0053] In the formula, The required amount of water to replenish. To restore the water storage volume, To accumulate days, This represents the average inbound flow rate of the previous ten days. The minimum outflow rate to meet the needs of flood control, power generation, water supply, ecology, and navigation.

[0054] (7) Check the outbound flow process Whether it meets other comprehensive utilization needs, and make appropriate adjustments accordingly; Step (7) describes the process of checking the outbound flow rate. Whether other comprehensive utilization needs are met, and appropriate adjustments are made accordingly, the specific methods are as follows: Check outbound flow process Does it meet other comprehensive utilization needs, such as power generation dispatching needs, ecological base flow, shipping flow, flood control dispatching needs, etc., and appropriately adjust the outflow process?

[0055] In the formula, To adjust the ecological scheduling process of artificial flood peaks t Daily outbound flow , These are the upper and lower limits of the outbound flow constraints specified in the regulations.

[0056] (8) Calculate the initial flow guarantee degree of the artificial flood peak ecological scheduling process. and traffic growth guarantee The specific method is as follows: Based on the parameters of the artificial flood peak ecological scheduling process specified in the reservoir scheduling regulations, and the designed artificial flood peak ecological scheduling process, calculate the guarantee degree of the starting flow rate for the artificial flood peak ecological scheduling process. and the degree of guarantee for price increases :

[0057] In the formula, To design the initial flow rate for the ecological regulation process of artificial flood peaks, To design the upper limit of flow rate increase in the ecological scheduling process of artificial flood peaks.

[0058] when and In the interval [1, ... ] and [1, If the time frame is within a certain range, it indicates that the ecological regulation process of artificial flood peaks can be guaranteed. It can be used as the outflow from the reservoir in the ecological scheduling process of artificial flood peaks.

[0059] Example 1 Taking Reservoir A as the research object, and based on the inflow conditions in mid-May 1995, an ecological regulation process for an artificial flood peak was designed. After the upstream reservoir's regulation effect, the average daily inflow during this period was 2303 m³ / h. 3 During the ecological water diversion period (10 days), the total inflow into the reservoir was 1.99 billion m³. 3 According to reservoir regulations, the design is based on a two-year design flood event, with a starting flow rate... 1200m 3 / s, peak flow 3150m 3 / s, It is 6. The value range is 300-500m 3 Based on this, the upper and lower limits of the total water demand are calculated to be 2.074 billion m³ and 1.642 billion m³, respectively. 3The total usable water volume of the reservoir falls within this range. The calculated amplification factor is 1.04. The preliminary design of the artificial flood peak ecological scheduling process is shown in Table 1. Figure 2 As shown. Inspection revealed that the outflow rate meets all other comprehensive utilization requirements and requires no adjustment.

[0060] Table 1. Parameters of the design flood process and ecological dispatching process of the design artificial flood peak in mid-May for Reservoir A. Unit: m 3 / s

[0061] According to the regulations for reservoirs, the initial flow rate during the ecological regulation of artificial flood peaks should not be lower than the minimum discharge rate of 1160 m³ / h during the fish spawning season. 3 / s, with a flow rate increase of 300-500m. 3 / s / d, calculate the initial surge flow guarantee accordingly. and the degree of guarantee for price increases With values ​​of 1.07 and 1.27, the specified starting flow rate and flow rate increase can be met, thus allowing the determination of the outflow rate during the ecological scheduling process of the artificial flood peak.

[0062] Example 2 Taking Reservoir B as the research object, and based on the inflow conditions in mid-June 1987, an ecological regulation process for an artificial flood peak was designed. After regulation by the upstream reservoir, the average daily inflow during this period was 1803 m³ / h. 3 During the ecological water diversion period (4 days), the total inflow into the reservoir was 623 million cubic meters per second. 3 .

[0063] Based on the summary of ecological regulation experiments in reservoirs in recent years, the starting flow range for artificial flood peak ecological regulation is 1600-3700 m³ / h. 3 / s, with a daily average flow rate increase ranging from 300-500m³ / s. 3 / s / d, The value is 4 (without a receding water process). Based on this, the upper and lower limits of the total water demand are calculated to be 1.538 billion m³ and 708 million m³, respectively. 3 The total available water volume of the reservoir is less than the lower limit of the total water demand. The artificial flood peak ecological scheduling process is designed based on the minimum value of the initial flow rate and the flow rate increase. As shown in Table 2 and Figure 3 As shown. Upon inspection, the outflow process meets other comprehensive utilization requirements and no adjustments are needed. Its initial flow guarantee is [not specified]. and traffic growth guarantee Both are 1, which meets the requirements of ecological scheduling for the starting flow rate and the flow rate increase.

[0064] Because the total water demand during the ecological regulation of the artificial flood peak exceeds the total available water volume, it is necessary to utilize reservoir storage or pre-emptively replenish water to meet the ecological regulation needs. The replenishment volume is 0.85 billion m³. 3 Before ecological regulation, the reservoir water level was 370m, reaching the dead water level, meaning there was no usable stored water and pre-emptive storage was necessary. According to regulations, the minimum discharge flow to meet the reservoir's power generation, navigation, and ecological needs is 1600m³. 3 / s, the average daily inflow in early June 1987 was 2440 m³ / s. 3 / s, the calculated number of days for the water to be stored is 1.2 days.

[0065] Table 2. Parameters for the ecological scheduling process of the designed artificial flood peak in Reservoir B in mid-June (Unit: m) 3 / s

[0066] Example 3 This embodiment provides a design system for an adaptive artificial flood peak ecological scheduling process, including: Parameter collection module: It is used to collect parameters of the artificial flood peak ecological scheduling process and the comprehensive utilization demand constraints of the ecological scheduling period in the reservoir scheduling procedure; Demand Calculation Module: It is used to set the upper and lower limits of the demand for artificial flood peak ecological scheduling parameters based on the upper and lower limits of the parameters in the reservoir scheduling procedure. Inflow calculation module: It is used to calculate the inflow sequence after upstream reservoir regulation, taking into account the regulation effect of upstream reservoir; Available inflow and available water volume calculation module: It is used to obtain available inflow and available water volume based on the parameters of the artificial flood peak ecological scheduling process, the inflow sequence after upstream reservoir regulation, and the available storage water volume of the reservoir itself under the premise of meeting the upper and lower limit water level constraints during the scheduling period. Water demand upper and lower limit determination module: It is used to determine the upper and lower limits of water demand in the artificial flood peak scheduling process according to the relevant provisions of the reservoir scheduling regulations. Outflow determination module: It is used to determine the outflow sequence of the artificial flood peak scheduling process based on the upper and lower limits of the available water volume and the water demand of the artificial flood peak scheduling process; Outbound flow adjustment module: It is used to check whether the outbound flow sequence meets other comprehensive utilization requirements and adjust the outbound flow process; Judgment module: It is used to calculate the guarantee degree of the starting flow and the guarantee degree of the rise in the artificial flood peak ecological scheduling process, and to determine whether the artificial flood peak ecological scheduling process is guaranteed.

[0067] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0068] It should be understood that any parts not described in detail in this specification belong to the prior art.

[0069] It should be understood that the above description of the preferred embodiments is quite detailed, but it should not be considered as a limitation on the scope of protection of this invention. Those skilled in the art, under the guidance of this invention, can make substitutions or modifications without departing from the scope of protection of the claims of this invention, and all such substitutions or modifications fall within the scope of protection of this invention. The scope of protection of this invention should be determined by the appended claims.

Claims

1. A design method for an adaptive artificial flood peak ecological scheduling process, characterized in that, Includes the following steps: Step 1. Collect parameters of the artificial flood peak ecological scheduling process and the comprehensive utilization demand constraints of the ecological scheduling period in the reservoir scheduling regulations; Step 2. Based on the upper and lower limits of the parameters for the ecological scheduling process of artificial flood peaks in the reservoir scheduling regulations, set the upper limit of the demand for the ecological scheduling parameters of artificial flood peaks; The upper limit of demand for artificial flood peak ecological scheduling parameters includes the upper limit of demand for initial flow and the upper limit of demand for flow rate increase: In the formula, This is the upper limit of the initial increase in traffic demand. This refers to the upper limit of the starting flow rate for the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the starting flow rate for the artificial flood peak ecological dispatching process as specified in the dispatching regulations; The upper limit of the demand for traffic growth. This refers to the upper limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the lower limit of the flow increase during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. Step 3. Considering the regulation and storage effect of the upstream reservoir, calculate the inflow sequence after regulation and storage by the upstream reservoir; Step 4. Based on the parameters of the artificial flood peak ecological scheduling process, the inflow after upstream reservoir regulation, and the reservoir's own available storage water volume under the premise of meeting the upper and lower limit water level constraints during the scheduling period, obtain the available inflow and available water volume. Step 5. Based on the relevant provisions of the reservoir operation regulations regarding the ecological operation of artificial flood peaks, determine the upper and lower limits of water demand for the artificial flood peak operation process; Step 6. Determine the outflow sequence for the artificial flood peak scheduling process based on the upper and lower limits of available inflow and water demand during the artificial flood peak scheduling process; including: (1) If the available water volume Within the water demand range [ Within this area, all incoming water will be used for ecological management. (2) If the available water volume Greater than the upper limit of water demand The outflow of the artificial flood peak scheduling process shall be determined according to the upper limit of the parameters of the artificial flood peak ecological scheduling process in the reservoir scheduling regulations, and the stored water volume and reservoir water level shall be calculated to see if they exceed the limit. (3) If the total available water volume Less than the lower limit of water demand The outflow of the artificial flood peak scheduling process is determined according to the lower limit of the parameters of the artificial flood peak ecological scheduling process in the reservoir scheduling regulations, and the water replenishment is calculated, as well as whether it is necessary to return the water to the reservoir in advance. Step 7. Check whether the outbound flow sequence meets other comprehensive utilization requirements and adjust the outbound flow process accordingly; Step 8. Calculate the initial flow guarantee degree and the rise guarantee degree of the artificial flood peak ecological scheduling process, and determine whether the artificial flood peak ecological scheduling process is guaranteed; The initial flow guarantee level of the artificial flood peak ecological scheduling process and the degree of guarantee for price increases : In the formula, To design the initial flow rate for the ecological regulation process of artificial flood peaks, To design the upper limit of flow rate increase in the ecological scheduling process of artificial flood peaks; Determining whether the ecological regulation process of artificial flood peaks is guaranteed includes: when and In the interval [1, ... ] and [1, If the time frame is within a certain range, it indicates that the ecological regulation process of artificial flood peaks can be guaranteed. It can be used as the outflow from the reservoir in the ecological scheduling process of artificial flood peaks.

2. The design method for an adaptive artificial flood peak ecological scheduling process according to claim 1, characterized in that, The parameters for the artificial flood peak ecological scheduling process in step 1 include: scheduling duration in days, initial flow rate, flood duration, flow rate increase, peak flow rate, receding duration, and flow rate decrease. The constraints on comprehensive utilization requirements include upper and lower limits of reservoir water level and outflow.

3. The design method for an adaptive artificial flood peak ecological scheduling process according to claim 1, characterized in that, Available water volume in step 4 and available water volume The calculation method is as follows: In the formula, The average inbound flow rate per unit time. T This refers to the number of days that the ecological scheduling process takes. W The available water storage capacity of the reservoir itself. This represents the reservoir capacity at the highest water level. This represents the reservoir capacity at the initial water level.

4. The design method for an adaptive artificial flood peak ecological scheduling process according to claim 3, characterized in that, In step 5, determining the upper and lower limits of water demand for the artificial flood peak scheduling process includes: (1) If the reservoir operation regulations stipulate that artificial flood peak ecological operation is carried out with reference to the design flood hydrograph of a certain return period, then the upper and lower limits of water demand in the artificial flood peak ecological operation process are as follows: (2) If the reservoir operation regulations do not specify a typical flood hydrograph for reference, but only specify the upper and lower limits of the starting flow and the flow rate increase, the upper and lower limits of the water demand for the artificial flood peak ecological operation process are calculated as follows: In the formula, This represents the lower limit of water demand during the ecological regulation of artificial flood peaks. This represents the upper limit of water demand during the ecological regulation of artificial flood peaks. For the peak flow, This refers to the lower limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the upper limit of the flow reduction during the ecological scheduling process of artificial flood peaks, as specified in the scheduling regulations. This refers to the number of days it takes for the flood peak to occur.

5. The design method for an adaptive artificial flood peak ecological scheduling process according to claim 1, characterized in that, Step 7 involves checking the outbound flow sequence. Whether other comprehensive utilization needs are met, and the process of appropriately adjusting the outbound flow rate, includes: In the formula, To adjust the ecological scheduling process of artificial flood peaks t Daily outbound flow , These are the upper and lower limits of the outflow constraint specified in the reservoir operation regulations.

6. A design system for an adaptive artificial flood peak ecological scheduling process, characterized in that, include: Parameter collection module: It is used to collect parameters of the artificial flood peak ecological scheduling process and the comprehensive utilization demand constraints of the ecological scheduling period in the reservoir scheduling procedure; Demand Calculation Module: It is used to set the upper and lower limits of the demand for artificial flood peak ecological scheduling parameters based on the upper and lower limits of the parameters in the reservoir scheduling procedure. Inflow calculation module: It is used to calculate the inflow sequence after upstream reservoir regulation, taking into account the regulation effect of upstream reservoir; Available inflow and available water volume calculation module: It is used to obtain available inflow and available water volume based on the parameters of the artificial flood peak ecological scheduling process, the inflow sequence after upstream reservoir regulation, and the available storage water volume of the reservoir itself under the premise of meeting the upper and lower limit water level constraints during the scheduling period. Water demand upper and lower limit determination module: It is used to determine the upper and lower limits of water demand in the artificial flood peak scheduling process according to the relevant provisions of the reservoir scheduling regulations. Outflow determination module: It is used to determine the outflow sequence of the artificial flood peak scheduling process based on the upper and lower limits of the available water volume and the water demand of the artificial flood peak scheduling process; Outbound flow adjustment module: It is used to check whether the outbound flow sequence meets other comprehensive utilization requirements and adjust the outbound flow process; Judgment module: It is used to calculate the guarantee degree of the starting flow and the guarantee degree of the rise in the artificial flood peak ecological scheduling process, and to determine whether the artificial flood peak ecological scheduling process is guaranteed; The adaptive water inflow process artificial flood peak ecological scheduling process design system is used to execute the steps in the adaptive water inflow process artificial flood peak ecological scheduling process design method according to any one of claims 1-5.

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