Regulation-reverse regulation cascade reservoir artificial flood peak ecological scheduling space determination method and system

Abstract

The invention provides a method suitable for determining an artificial flood peak ecological scheduling space of a regulation-reverse regulation cascade reservoir, which comprises the following steps of: carding comprehensive utilization requirements of a cascade reservoir scheduling period, and determining constraints of water levels and flows of a regulation reservoir and a reverse regulation reservoir in combination with a reservoir scheduling procedure and a scheduling operation practice; concluding an artificial flood peak ecological scheduling mode according to ecological scheduling practical data over the years and ecological scheduling development requirements; selecting a typical year by adopting a frequency analysis method according to long-series reservoir runoff data; according to the selected typical year, different calculation schemes are prepared, water balance calculation is carried out, and a scheduling space is reversely deduced; and according to the back-stepping scheduling space, calculating whether the hydraulic condition between the two dams meets the constraint condition or not by using a one-dimensional hydrodynamic model after back-regulation. According to the method, on the premise of considering other comprehensive utilization requirements, the adjustment-reverse adjustment cascade reservoir artificial flood peak ecological scheduling space is given, and the problem of determining the cascade reservoir artificial flood peak ecological scheduling space is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of reservoir ecological regulation, and in particular relates to a method and system for determining the ecological regulation space of artificial flood peaks in regulation-counterregulation cascade reservoirs. Background Art

[0002] While dam construction offers numerous benefits, including flood control, ecological conservation, navigation, power generation, and water supply, it can also have certain impacts on the ecological environment. The regulation of upstream reservoirs alters the hydrological conditions, sedimentation patterns, and water temperature of downstream river sections. This leads to flattening of the river channel during small and medium-sized floods, weakening the hydrological stimulus required for fish spawning and impacting the habitat suitability of fish populations. Therefore, it is necessary to implement reservoir regulation measures and artificial flood peak ecological regulation to create hydrological conditions conducive to stimulating fish spawning.

[0003] Because artificial flood peak ecological regulation typically targets specific fish species, it requires that upstream reservoir outflows meet prescribed processes while also balancing the needs of flood control, power generation, navigation, water supply, and other integrated uses, as well as reservoir bank stability. Specifically for regulating-counter-regulation cascade reservoirs, due to the limited regulatory capacity of the counter-regulating reservoirs, artificial flood peak regulation not only requires the regulating reservoir to discharge ecological flows according to regulations, but also coordinates the production and domestic water needs of downstream river sections. More importantly, it must also take into account the scheduling needs of downstream counter-regulating reservoirs for navigation, power generation, and other operations.

[0004] However, current artificial flood peak ecological scheduling technologies are primarily focused on ecological scheduling needs and are unable to efficiently coordinate the complex demands of flood control, power generation, shipping and water supply, and reservoir bank stability, all of which will limit the scope for artificial flood peak ecological scheduling. Furthermore, current artificial flood peak ecological scheduling technologies are primarily targeted at single reservoirs and are not applicable to the more complex regulation-counter-regulation cascade reservoirs. Therefore, a technology is urgently needed that can comprehensively consider multiple comprehensive utilization needs and is suitable for determining the space for artificial flood peak ecological scheduling during the drawdown period of regulation-counter-regulation cascade reservoirs. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide a method for determining the ecological scheduling space of artificial flood peaks for regulating-counterregulating cascade reservoirs. This method can comprehensively consider the impact of ecological scheduling on flood control, power generation, shipping and water supply, reservoir bank stability, etc. for regulating-counterregulating cascade reservoirs, determine the space for carrying out ecological scheduling, improve water resource utilization efficiency, reduce water abandonment, and expand scheduling space, thereby solving the technical problem that previous methods or technical means were difficult to determine the ecological scheduling space for regulating-counterregulating cascade reservoirs.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A method for determining the ecological dispatching space of artificial flood peaks in a regulation-counter-regulation cascade reservoir system comprises the following steps:

[0008] Step 1. Identify the comprehensive utilization requirements of the regulating and counter-regulating cascade reservoirs and determine the scheduling constraints of the regulating and counter-regulating reservoirs based on reservoir scheduling regulations and scheduling operation practices.

[0009] Step 2. Based on the ecological regulation practices of regulating reservoirs over the years and the needs of ecological regulation, summarize the ecological regulation methods of artificial flood peaks and determine the ecological regulation implementation period and ecological regulation parameters;

[0010] Step 3. Based on the long-term inflow data of the regulating reservoir, select a typical year using the frequency analysis method according to the total water inflow during the ecological regulation period;

[0011] Step 4. For the selected typical year, formulate a calculation plan, carry out water balance calculation, and reversely calculate the ecological operation space of the artificial flood peak of the reservoir;

[0012] Step 5. Based on the ecological dispatching space obtained by reverse deduction, use the one-dimensional hydrodynamic model to calculate whether the hydraulic conditions between the two dams meet the relevant constraints. If the hydraulic conditions are met, stop the calculation and output the calculation results of the dispatching space at this time; otherwise, return to step 4, re-draft the calculation plan, and deduce the ecological dispatching space until the hydraulic condition constraints are met.

[0013] Furthermore, the scheduling constraints in step 1 include:

[0014] 1) Flood control constraints: The water level of the regulating reservoir shall not exceed the upper limit of the reservoir level specified in the dispatching regulations, and the discharge flow shall not exceed the upper limit of the flow to ensure flood control safety;

[0015] 2) Shipping constraints:

[0016] For regulating the navigation demand in the reservoir area, the water level of the regulating reservoir shall not be lower than the lower limit of the reservoir water level required for navigation in the reservoir area;

[0017] For navigation between two dams of a regulating-counter-regulating reservoir, the hydraulic conditions between the two dams must meet navigation requirements, that is, the water level fluctuation at each monitoring section between the two dams must not exceed the specified value:

[0018] For the downstream navigation needs of the counter-regulation reservoir, the outflow of the regulating reservoir must not be lower than the lower limit of the flow to ensure the navigation conditions downstream of the counter-regulation reservoir, and not higher than the upper limit of the flow to ensure the navigation safety downstream of the counter-regulation reservoir;

[0019] 3) Water supply constraints: The minimum discharge flow of the regulating reservoir should not be lower than the lower limit of the flow to ensure the safety of downstream water supply;

[0020] 4) Reservoir bank stability constraint: The water level fluctuation amplitude of the regulating reservoir should be lower than the upper limit of the water level fluctuation amplitude to ensure the stability of the reservoir bank;

[0021] 5) No water abandonment constraint: The discharge flow of the regulating reservoir shall not be higher than the maximum flow capacity of the unit of the counter-regulating reservoir.

[0022] 6) Summary of reservoir water level boundary conditions: Combined with the reservoir operation regulations and the operation constraints of the counter-regulation reservoir, the upper and lower limits of the regulating reservoir water level constraints are given, and the actual operating water level statistics are given in combination with the regulation operation practice of the regulating reservoir.

[0023] Furthermore, the ecological scheduling method in step 2 specifically includes:

[0024] 1) Determination of the scheduling period: Based on the temperature conditions required for spawning of the target fish species for artificial flood peak ecological scheduling, statistics are collected on the period when the river water temperature reaches that temperature. Combined with the practice data of ecological scheduling over the years, the appropriate period for carrying out artificial flood peak ecological scheduling is determined:

[0025] t1~t2(T>T0)

[0026] Where t1 and t2 represent the start and end time nodes of the year suitable for artificial flood peak ecological regulation; T represents the river water temperature; T0 represents the lower limit of the temperature required for artificial flood peak ecological regulation;

[0027] 2) Determination of dispatching parameters: According to the hydrological conditions required for spawning of fish species in artificial flood peak ecological dispatching, the starting flow Q for regulating reservoirs to carry out artificial flood peak ecological dispatching is determined. 起涨 , daily traffic increase ΔQ 上涨 , Traffic increase duration N 上涨 :

[0028] The starting flow rate for artificial flood peak ecological regulation should be within the range of hydrological conditions required for spawning of target fish:

[0029]

[0030] Where Q1 and Q2 represent the lower and upper limits of the initial flow rate required to stimulate fish spawning, respectively; ΔQ1 and ΔQ2 represent the lower and upper limits of the flow rate increase required to stimulate fish spawning, respectively; a and b represent the lower and upper limits of the number of days of the flow rate increase required to stimulate fish spawning.

[0031] Furthermore, step 3 specifically includes:

[0032] Step 3.1 Obtaining the total water volume series for each period: Based on the time period suitable for artificial flood peak ecological regulation described in Step 2, calculate the total water inflow for each period in previous years based on the long series of inflow runoff, and arrange them from largest to smallest to obtain the total water inflow series for each period:

[0033] [W1,W2,W3,…,W n ]

[0034] Where W represents the total water inflow during the period in the long series of years; n represents the length of the series;

[0035] Step 3.2 Empirical frequency calculation: Calculate the empirical frequency of water volume in the total water volume series over the years:

[0036]

[0037] Where m represents the mth item in the total water inflow series of the time period, P m is the empirical frequency of the mth item in the series, indicating that the total water inflow during the period in the past years is greater than W m possibility;

[0038] Step 3.3: Select typical years: Based on the results of empirical frequency calculation, select typical high-flow years, normal-flow years, and low-flow years from the total water inflow series of the time period according to the frequencies P = 25%, 50%, and 75%, respectively.

[0039] Furthermore, step 4 specifically includes:

[0040] Step 4.1 Calculation scheme: According to the ecological dispatch method described in step 2, the starting flow Q is calculated according to the basic parameters of artificial flood peak ecological dispatch. 起涨 , daily traffic increase ΔQ 上涨 , Traffic increase duration N 上涨 Formulate an ecological dispatching outflow plan; based on the typical year selected in step 3, use the inflow from typical year t1 to t2 as the water inflow condition for the ecological dispatching period; and formulate the reservoir water level Z1 at the beginning of the period t1 and the reservoir water level Z2 at the end of the period t2 according to the upper and lower limits of the regulating reservoir water level in step 1;

[0041] Step 4.2 Calculation of scalable water volume: The scalable water volume of the regulating reservoir during the period t1 to t2 includes the inflow water volume W 入库 And storage water volume W 库存 ;

[0042] W 库存 =f(Z2)-f(Z1)

[0043] Where, f(Z2) represents the water level and storage capacity curve when the reservoir water level at the end of time period t2 is Z2, and f(Z1) represents the water level and storage capacity curve when the reservoir water level at the end of time period t1 is Z1;

[0044]

[0045] Where Q(t) represents the inflow of the regulating reservoir in the period t1 to t2 in a typical year;

[0046] During the period from t1 to t2, the total amount of water available for dispatch in the regulating reservoir is:

[0047] W 可调度水量 =W 库存 +W 入库

[0048] Step 4.3 Calculation of ecological dispatch water demand: During the period t1 to t2, the ecological dispatch water demand of artificial flood peak is W 生态 for:

[0049]

[0050] 4) Constraint satisfaction judgment: Calculate the average daily flow rate during the non-ecological scheduling period between t1 and t2 based on the available water volume and the ecological scheduling water demand; and set judgment conditions to determine whether the available water volume, the average daily flow rate during the non-ecological scheduling period, and the minimum inflow during the ecological scheduling period meet the judgment conditions.

[0051] If the conditions are met, the range of the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2 is the scheduling space for the artificial flood peak ecological scheduling during the time period t1 to t2; if the conditions are not met, the calculation plan needs to be adjusted, and the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2 need to be re-calculated until the judgment conditions are met.

[0052] Furthermore, the judgment conditions are as follows:

[0053]

[0054] Where Q 最小入库 Indicates the minimum inflow during the non-ecological scheduling period from t1 to t2;

[0055] Indicates the average daily drawdown of the regulating reservoir The corresponding maximum daily discharge volume, It indicates the lower limit of flow to ensure navigation conditions downstream of the counter-regulation reservoir. represents the upper limit of flow to ensure navigation safety downstream of the counter-regulation reservoir, Q 非生态 represents the average daily flow during the non-ecological dispatch period, It indicates the lower limit of flow rate to ensure the safety of downstream water supply. Indicates the maximum flow capacity of the unit in the counter-regulation reservoir.

[0056] Furthermore, the average daily flow rate during the non-ecological dispatch period is:

[0057]

[0058] Where N 非生态调度时段Indicates the number of days during which ecological scheduling is not carried out between t1 and t2.

[0059] Furthermore, step 5 specifically includes:

[0060] Step 5.1 Model construction: Establish a hydrodynamic model between the two dams of the regulating-counter-regulating reservoir;

[0061] Step 5.2: Determine the hydraulic conditions: Take the discharge process of the regulating reservoir during the ecological operation period and the discharge process during the non-ecological operation period as the hydrodynamic input conditions between the two dams of the regulating-counter-regulating reservoir, calculate the hydraulic conditions between the two dams, and calculate the water level fluctuation at each monitoring section between the two dams.

[0062] If the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation result at this time is output; otherwise, return to step 4, re-plan the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2, and deduce the scheduling space until the hydraulic condition constraints are met.

[0063] Furthermore, the water conservancy conditions should meet the following requirements:

[0064]

[0065] Where, is the water level variation at each monitoring section between the two dams, i represents the i-th monitoring section, It specifies the value of water level fluctuation at each monitoring section of navigation between the two dams.

[0066] In another aspect, the present invention provides a system for determining artificial flood peak ecological scheduling space for regulating and counter-regulating cascade reservoirs, comprising:

[0067] Scheduling constraint determination module: This module is used to sort out the comprehensive utilization requirements of regulating and counter-regulating cascade reservoirs and determine the scheduling constraints of regulating and counter-regulating reservoirs based on reservoir scheduling regulations and scheduling operation practices;

[0068] Scheduling method determination module: It is used to summarize the artificial flood peak ecological scheduling method based on the ecological scheduling practice of regulating reservoirs over the years and the demand for ecological scheduling, and determine the ecological scheduling implementation period and ecological scheduling parameters;

[0069] Typical year selection module: It is used to select typical years based on the long series of inflow runoff data of the regulating reservoir and the total water inflow during the ecological scheduling period using the frequency analysis method;

[0070] Scheduling space determination module: This module is used to formulate calculation plans for selected typical years, conduct water balance calculations, and reversely adjust the ecological scheduling space of artificial flood peaks in reservoirs;

[0071] Scheduling space calculation result output module: It is used to calculate whether the hydraulic conditions between the two dams meet the relevant constraints based on the ecological scheduling space obtained by reverse deduction using a one-dimensional hydrodynamic model. When the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation results at this time are output; otherwise, the calculation plan is re-drafted to deduce the ecological scheduling space until the hydraulic condition constraints are met.

[0072] Compared with the prior art, the present invention has the following beneficial effects:

[0073] The method provided by the present invention is suitable for determining the ecological scheduling space of artificial flood peaks during the drawdown period of regulating-counter-regulating cascade reservoirs. It can comprehensively consider the comprehensive scheduling needs of flood control, power generation, shipping, water supply, reservoir bank stability and other aspects during the drawdown period, and determine the scheduling space of artificial flood peak ecological scheduling while comprehensively considering the above factors, thereby solving the problem that the previous implementation of artificial flood peak ecological scheduling has brought adverse effects on other comprehensive utilization needs; since the method of the present invention takes into account various constraints of regulating-counter-regulating cascade reservoirs in the process of deducing the artificial flood peak ecological scheduling space, the method can be applied to the deduction of the ecological scheduling space of artificial flood peaks during the drawdown period of regulating-counter-regulating cascade reservoirs, which greatly improves the applicability of the method. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0075] Figure 1 This is a flow chart of the method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoirs of the present invention;

[0076] Figure 2 The upper and lower limit diagram of the current water level constraint of Reservoir A in the embodiment of the present invention;

[0077] Figure 3 This is a diagram of the maximum and minimum intervals of the water level in the actual dispatching operation of Reservoir A in an embodiment of the present invention;

[0078] Figure 4 A cross-sectional layout diagram of a hydrodynamic model between two dams in an embodiment of the present invention; DETAILED DESCRIPTION

[0079] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0080] Example 1

[0081] Reservoir A is a large reservoir on the Yangtze River mainstream with comprehensive utilization requirements. Reservoir B serves as a counter-regulatory reservoir for Reservoir A. To mitigate the impact of flood flattening caused by Reservoir A's regulation on the spawning of the four major carps and promote their natural reproduction, relevant ministries and commissions have been organizing ecological regulation of the A and B cascade reservoirs since 2011 to promote the natural reproduction of the four major carps. In the middle reaches of the Yangtze River, when water temperatures are suitable, Reservoir A implements artificial flood peak ecological regulation based on inflow conditions and its own water storage capacity. This ecological regulation will inevitably affect flood control, power generation, shipping, water supply, bank stability, and water discharge from Reservoir B. To fully coordinate ecological regulation with other comprehensive utilization requirements, it is necessary to clarify the scheduling space for artificial flood peak ecological regulation of the A and B cascade reservoirs.

[0082] like Figure 1 As shown, the method provided by the present invention for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir during the drawdown period is used to calculate and analyze the artificial flood peak ecological dispatching space of the AB cascade reservoir during the drawdown period, which specifically includes the following steps:

[0083] Step 1: Sort out the comprehensive utilization needs of the AB cascade reservoirs during the drawdown period. Combined with the practical data and dispatching procedures of reservoir A, determine the constraints on the water level and flow of the AB cascade reservoirs. The specific constraints are as follows:

[0084] 1) Flood control constraints. According to relevant research, the water level of the regulating reservoir shall not exceed the upper limit of the reservoir water level specified in the dispatching regulations, and the discharge flow shall not exceed the upper limit of the flow to ensure flood control safety:

[0085]

[0086] Among them, Z 库 To regulate the water level of the reservoir, is the upper limit of the reservoir water level specified in the dispatching regulations, Q 出库 To regulate the outflow of the reservoir, To ensure the upper limit of flow rate for flood control safety.

[0087] In this embodiment, before mid-June, the Yichang flood and the two lake floods generally do not encounter each other. Therefore, carrying out ecological scheduling in the non-flood season has basically no impact on flood control. Carrying out ecological scheduling in the flood season can be combined with the real-time and forecast rainfall conditions of the control stations in the middle and lower reaches of the Yangtze River to reasonably control the operating control water level while ensuring flood control safety.

[0088] 2) Shipping constraints.

[0089] To regulate the shipping demand in the reservoir area, the water level of the regulating reservoir shall not be lower than the lower limit of the reservoir water level required for the shipping demand in the reservoir area:

[0090]

[0091] For navigation between two dams of a regulating-counter-regulating reservoir, the hydraulic conditions between the two dams must meet navigation requirements, that is, the water level fluctuation at each monitoring section between the two dams should not exceed the specified value:

[0092]

[0093] Where i = 1, 2, 3, …, N, where N is the number of monitoring sections between the two dams. The hydraulic conditions between the two dams are calculated using the hydrodynamic model in step 5.

[0094] For the downstream navigation needs of the counter-regulation reservoir, the outflow of the regulating reservoir must not be lower than the lower limit of the flow to ensure the navigation conditions downstream of the counter-regulation reservoir, and not higher than the upper limit of the flow to ensure the navigation safety downstream of the counter-regulation reservoir:

[0095]

[0096] Among them, Q 出库 Indicates regulating the outflow of the reservoir, It indicates the lower limit of flow to ensure navigation conditions downstream of the counter-regulation reservoir. It indicates the upper limit of flow rate to ensure navigation safety downstream of the counter-regulation reservoir.

[0097] In this embodiment, the navigation needs of the A reservoir area, the navigation between the two dams of the AB cascade reservoirs, and the navigation needs downstream of the B reservoir are mainly considered.

[0098] Regarding the shipping demand in the reservoir area of Reservoir A, according to the "AB Cascade Reservoir Dispatching Regulations (2019 Revised Edition)", under normal circumstances, the water level of Reservoir A at the end of April shall not be lower than the low water level of 155.0m during the dry season, and shall not be higher than 155.0m on May 25.

[0099]

[0100] Among them, Z 库(4.30) In order to adjust the reservoir water level on April 30, Z 库(5.25)To regulate the reservoir water level on May 25;

[0101] For the navigation needs between the two dams of AB Reservoir, the hydraulic conditions between the two dams must meet the navigation needs, that is, the daily fluctuation of the water level at each monitoring section between the two dams does not exceed 3m / d:

[0102]

[0103] In this embodiment, The value is 3.

[0104] For the downstream navigation needs of Reservoir B, the minimum navigation water level downstream of Reservoir B is controlled at 39.0m, and the corresponding discharge flow of Reservoir A is about 5700m 3 / s, in actual scheduling, it is generally not less than 6000m 3 According to the "B Water Conservancy Project Dispatching Regulations", the maximum navigable flow rate of the B downstream channel is 35,000m 3 / s.

[0105] 6000≤Q 出库 ≤35000

[0106]

[0107] 3) Water supply constraints. According to the relevant provisions of the cascade reservoir operation regulations and operation documents on water supply, and considering the actual water supply needs of the downstream river sections, the minimum discharge flow of the regulating reservoir must not be lower than the lower limit of the flow to ensure the safety of downstream water supply:

[0108]

[0109] In this example, according to the "AB Cascade Reservoir Operation Regulations (2019 Revised Edition)" and related literature, the minimum discharge flow of Reservoir A should generally be 6000m 3 / s control, and according to the dispatching operation practice in recent years and the status of continuous scouring in the middle and lower reaches, in dry years, the minimum discharge flow of Reservoir A during the drawdown period should be 7000m 3 When saltwater intrusion from the Yangtze River estuary occurs, the discharge flow rate should be further increased.

[0110] Q 出库 ≥7000

[0111] 4) Bank stability constraints. According to the bank stability conditions stipulated in the cascade reservoir operation regulations, the water level fluctuation amplitude of the regulating reservoir should be lower than the upper limit of the water level fluctuation amplitude to ensure bank stability:

[0112]

[0113] In this embodiment, according to the "AB Cascade Reservoir Dispatching Regulations (2019 Revised Edition)", taking into account the requirements of geological disaster control project safety and reservoir bank stability on the reservoir water level drop rate, the daily drop in the water level of Reservoir A is generally controlled at 0.6m, and from May 25th to the period when the reservoir water level drops to the flood control limit water level (concentrated drop period), it is controlled at no more than 1.0m / d.

[0114]

[0115] 5) No water abandonment constraint. According to the output conditions of the counter-regulation reservoir, in order to ensure that the counter-regulation reservoir does not abandon water as much as possible, the discharge flow of the regulating reservoir should be as low as possible below the maximum flow capacity of the unit of the counter-regulation reservoir:

[0116]

[0117] In this embodiment, based on the output conditions of Reservoir B, in order to ensure that Reservoir B does not abandon water as much as possible, the discharge flow of Reservoir A should be lower than the full discharge flow of the unit of Hydropower Station B by about 18500m 3 / s.

[0118] Q 出库 ≤18500

[0119] 6) Summary of reservoir water level boundary conditions. Based on the constraints on flood control, power generation, navigation, and downstream water replenishment in the "AB Cascade Reservoir Operation Regulations (2019 Revised Edition)", the upper and lower limits of the current water level constraints of Reservoir A are summarized on a ten-day scale, as follows: Figure 2 As shown. From March to early May, the water level of Reservoir A is controlled between 155m and 175m; in mid-May, the water level is generally controlled between 155m and 164m; in late May, the water level is generally controlled between 149m and 158m, but must drop below 155m on May 25; in early June, the water level is controlled between 144.9m and 155m; from mid-June to early July, the water level is controlled between 144.9m and 148m. In actual scheduling, if Figure 3 As shown, the daily average water level of Reservoir A on May 25, 2010-2023 was between 150.7 and 154.5m, with a multi-year average of 152.1m; the daily average water level on June 10 was generally around 145m.

[0120] Step 2: Based on the historical data on ecological regulation of artificial flood peaks at Reservoir A and the needs for ecological regulation, we summarized the ecological regulation methods. Combined with the historical practice of ecological regulation of artificial flood peaks at Reservoir A, the specific regulation methods summarized are as follows:

[0121] 1) Determine the appropriate time period for ecological regulation during the flood peak period. Based on the temperature conditions required for spawning of the fish species targeted by artificial flood peak ecological regulation, calculate the time period when the river water temperature reaches that temperature, and combine it with the practice data of ecological regulation over the years to determine the appropriate time period for artificial flood peak ecological regulation:

[0122] t1~t2(T>T0) (8)

[0123] Where t1 and t2 represent the start and end time nodes suitable for artificial flood peak ecological regulation, respectively; T represents the river water temperature; and T0 represents the lower limit of the temperature required for artificial flood peak ecological regulation.

[0124] In this example, the spawning temperature of the four major carps is greater than 18°C. According to the data in Table 1, Reservoir A generally carries out artificial flood peak ecological regulation around May 20 to June 30. This example takes the ecological regulation period as the concentrated flood drawdown period from May 25 to June 10 as an example, that is, the ecological regulation period is:

[0125] May 25 to June 10 (T>18℃)

[0126] 2) Determine ecological regulation parameters. Based on the hydrological conditions required for spawning fish species in the artificial flood peak ecological regulation, determine the parameters such as the starting flow rate, daily flow rate increase, and flow rate increase duration for regulating the artificial flood peak ecological regulation of the reservoir:

[0127]

[0128] The starting flow rate for artificial flood peak ecological regulation should be within the range of hydrological conditions required to stimulate fish spawning:

[0129]

[0130] Where Q1 and Q2 represent the lower and upper limits of the initial flow rate required to stimulate fish spawning, respectively; ΔQ1 and ΔQ2 represent the lower and upper limits of the flow rate increase required to stimulate fish spawning, respectively; a and b represent the lower and upper limits of the number of days of the flow rate increase required to stimulate fish spawning.

[0131] In this embodiment, according to relevant literature, the ecological scheduling parameters for stimulating the natural reproduction of the four major fish species are a starting flow of 10,000 to 12,000 m 3 / s, the daily traffic increase is 1000~2000m 3 / s, and the duration is 3 to 7 days. Therefore, the starting flow of artificial flood peak ecological regulation of Reservoir A should be within the range of hydrological conditions required to stimulate fish spawning:

[0132]

[0133] Table 1A: Parameters of artificial flood peak ecological regulation in reservoirs over the years

[0134] Step 3 includes:

[0135] 1) Obtaining the total water volume series for each period. Based on the long series of inflow runoff, calculate the total water volume for each period in each year and arrange them from largest to smallest to obtain the total water volume series for each period:

[0136] [W1,W2,W3,…,W n ](10)

[0137] Where W represents the total water volume in the long series of years; n represents the length of the series.

[0138] 2) Calculate the empirical frequency. Calculate the empirical frequency of each item in the total water volume series for each period:

[0139]

[0140] Where m represents the mth item in the total water volume series of the time period, P m is the empirical frequency of the mth item in the series, which indicates that the total water volume in the period during the year is greater than W m possibility.

[0141] 3) Typical Year Selection: Based on the empirical frequency calculation results, select typical high-flow years, normal-flow years, and low-flow years from the total water volume series for a period at frequencies P = 25%, 50%, and 75%, respectively.

[0142] In this example, based on the long-term runoff data of Reservoir A from 1959 to 2013, the frequency was sorted according to the sum of the water inflow during the ecological scheduling period, and typical years with frequencies of 25%, 50% and 75% of high, normal and low seasons were selected. See Table 2 for details.

[0143] Table 2A: Total natural water inflow from May 25 to June 10 in a typical year

[0144] Water frequency Feng (25%) Flat (50%) Withered (75%) Typical Year 1975 1990 2008 <![CDATA[Total incoming water volume (100 million m 3 )]]> 243.7 207.0 178.5

[0145] Step 4: For the selected typical year, formulate a calculation plan, carry out water balance calculation, and reversely adjust the ecological dispatching space of the reservoir's artificial flood peak.

[0146] 1) Calculation scheme formulation. According to the ecological scheduling method determined in step 2, formulate the appropriate ecological scheduling period t1~t2 and the basic parameters of artificial flood peak ecological scheduling starting flow Q 起涨 , daily traffic increase ΔQ 上涨 , Traffic increase duration N 上涨Formulate an ecological scheduling plan; based on the typical year described in step 3, use the inflow from typical year t1 to t2 as the water inflow condition for the ecological scheduling period; based on the reservoir flood control and reservoir navigation constraints described in step 1, formulate the reservoir water level Z1 at the beginning of the period t1 and the reservoir water level Z2 at the end of the period t2.

[0147] 2) Calculation of available water. The amount of water available for dispatch in the regulating reservoir during the period t1 to t2 includes the inflow and storage water. The storage water volume is calculated by checking the water level and storage capacity curve using the reservoir water level Z1 at the beginning of the period t1 and the reservoir water level Z2 at the end of the period t2:

[0148] W 库存 =f(Z2)-f(Z1) (12)

[0149] Where f represents the water level storage capacity curve, W 库存 Indicates the amount of water stored in the regulating reservoir.

[0150] The amount of water entering the reservoir is calculated based on the water intake in typical years:

[0151]

[0152] Where Q(t) represents the inflow into the regulating reservoir during the period t1 to t2 in a typical year.

[0153] Then, during the period from t1 to t2, the total amount of water available for dispatch in the regulating reservoir is:

[0154] W 可调度水量 =W 库存 +W 入库 (14)

[0155] 3) Calculation of water demand for ecological regulation. During the period t1 to t2, the water demand for ecological regulation of artificial flood peak is:

[0156]

[0157] 4) Determination of the degree of constraint satisfaction. Under typical annual water flow conditions, the total water volume available for dispatch should meet the water demand for ecological dispatch and the needs of downstream shipping and water supply. Furthermore, the water level drop at the regulating power station reservoir should meet the requirements for reservoir bank stability, and the downstream flow should be less than the water discarded by the counter-regulating power station.

[0158] Assuming that after deducting the water demand for ecological scheduling from the total water available for scheduling, the remaining water is evenly distributed to each day during the period t1 to t2 when ecological scheduling is not carried out, the average daily flow during the non-ecological scheduling period is:

[0159]

[0160] Where N 非生态调度时段 Indicates the number of days during which ecological scheduling is not carried out between t1 and t2.

[0161] The specific judgment conditions are as follows:

[0162]

[0163] Where Q 最小入库 Indicates the minimum inflow during the non-ecological scheduling period from t1 to t2; Indicates the average daily drawdown level of the regulating reservoir The corresponding maximum daily addition and discharge volume.

[0164] If the above conditions are met, the range of reservoir water levels Z1 at the beginning of time period t1 and Z2 at the end of time period t2 constitutes the scheduling space for artificial flood peak ecological scheduling between time period t1 and t2. If not, the calculation scheme needs to be adjusted and the reservoir water levels Z1 at the beginning of time period t1 and Z2 at the end of time period t2 need to be recalculated.

[0165] The present embodiment is specifically as follows:

[0166] 1) Calculation plan formulation.

[0167] According to the range of ecological dispatch parameters determined in step 3, the middle value is taken for calculation to reflect the average level. The ecological dispatch parameter is the starting flow of 11000m 3 / s, increase by 1500m 3 / s, lasting for 5 days.

[0168] According to the water level boundary of Reservoir A in step 1, the water level of Reservoir A on May 25 in the proposed calculation and analysis is 155m, 150m and the actual multi-year average of 152m; it is proposed that the water level of Reservoir A on June 10 can drop to 145m, 146.5m, 148m and 150m.

[0169] The water inflow conditions of the wet year 1975, the normal year 1990, and the dry year 2008 determined in step 3 (see Table 3) are used as the water inflow conditions.

[0170] Table 3 Water supply in typical years

[0171]

[0172]

[0173] 2) Calculation of dispatchable water volume.

[0174] The available water volume is calculated by adding the typical annual water volume during the ecological scheduling period determined in Step 3 to the remaining reservoir water volume to be drawn down between the reservoir water level on May 25 and the reservoir water level on June 10. The specific calculation results are shown in Table 4.

[0175] 3) Calculation of water demand for ecological scheduling.

[0176] The ecological scheduling water demand is calculated according to formula (15) and the determined ecological scheduling parameters. The specific results are shown in Table 4.

[0177] 4) Judgment of the degree of constraint satisfaction.

[0178] The average daily discharge flow during the non-ecological dispatch period is calculated according to formula (16), as shown in Table 4.

[0179] Table 4 Ecological scheduling water balance calculation table

[0180]

[0181]

[0182] As shown in Table 4, the average daily discharge flow during the non-ecological operation period ranges from 10700 to 23500 m 3 / s. According to formula (17), it can be seen that the ecological water demand, navigation downstream of the dam, and downstream water supply constraints are met; combined with the needs of flood control in the middle and lower reaches during the drawdown period, since there will be no mainstream floods and two lake floods before mid-June, there will be no adverse impact on flood control in the middle and lower reaches. According to the water level and storage capacity curve of Reservoir A, the daily average discharge volume corresponding to a 1m drawdown of 1m between 155 and 145m of Reservoir A is 7200m 3 / s. That is, 7200. Combined with the minimum water inflow from May 25 to June 10 in each typical year in Table 3: 1975 (13342m 3 / s), 1990 (10929m 3 / s), 2008 (9462m 3 / s), the corresponding daily average discharge during the non-ecological regulation period of each year should be less than that in 1975 (20542m 3 / s), 1990 (18129m 3 / s), 2008 (16662m 3 / s).

[0183] Table 5 details the degree to which each option satisfies the constraints regarding ecology, downstream navigation, water supply, water abandonment, and reservoir bank stability. As shown in Table 5, in a wet year, almost all options fail to meet the constraint of no water abandonment in Option B, and half of the options pose risks to reservoir bank stability. Only Option 12 satisfies all constraints, meaning that the operating space for the cascade reservoirs A and B is such that, if the reservoir level falls to 150 m on May 25, it remains at 150 m on June 10.

[0184] Table 5 Evaluation table of constraint satisfaction of each scheme

[0185]

[0186]

[0187] Step 5: Based on the dispatching space obtained by reverse deduction, use the one-dimensional hydrodynamic model to calculate whether the hydraulic conditions between the two dams after reverse regulation meet the constraints:

[0188]

[0189] When the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation result at this time is output; otherwise, return to step 4, re-draft the calculation plan, and deduce the scheduling space until the hydraulic condition constraints are met.

[0190] 1) Model construction. A hydrodynamic model between the two dams of the AB cascade reservoir was established. The model section layout is shown in Figure 4 .

[0191] 2) Hydraulic Condition Assessment. The discharge flow rate determined for Scheme 12 was used as the model input, with the lower boundary being the corresponding water level and flow rate for B. The hydraulic conditions between the two dams were calculated using the constructed hydrodynamic model, and the satisfaction of these conditions was determined using Equation (18). Verification showed that the daily fluctuation of the water level at each section was below 3 m / d. Table 5 shows the satisfaction of the hydraulic constraints for navigation between the two dams under each scheme.

[0192] Example 2

[0193] A specific embodiment of the present invention further provides a system for determining artificial flood peak ecological scheduling space for regulating and counter-regulating cascade reservoirs, comprising:

[0194] Scheduling constraint determination module: This module is used to sort out the comprehensive utilization requirements of regulating and counter-regulating cascade reservoirs and determine the scheduling constraints of regulating and counter-regulating reservoirs based on reservoir scheduling regulations and scheduling operation practices;

[0195] Scheduling method determination module: It is used to summarize the artificial flood peak ecological scheduling method based on the ecological scheduling practice of regulating reservoirs over the years and the demand for ecological scheduling, and determine the ecological scheduling implementation period and ecological scheduling parameters;

[0196] Typical year selection module: It is used to select typical years based on the long series of inflow runoff data of the regulating reservoir and the total water inflow during the ecological scheduling period using the frequency analysis method;

[0197] Scheduling space determination module: This module is used to formulate calculation plans for selected typical years, conduct water balance calculations, and reversely adjust the ecological scheduling space of artificial flood peaks in reservoirs;

[0198] Scheduling space calculation result output module: It is used to calculate whether the hydraulic conditions between the two dams meet the relevant constraints based on the ecological scheduling space obtained by reverse deduction using a one-dimensional hydrodynamic model. When the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation results at this time are output; otherwise, the calculation plan is re-drafted to deduce the ecological scheduling space until the hydraulic condition constraints are met.

[0199] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

[0200] It should be understood that parts not elaborated in detail in this specification belong to the prior art.

[0201] It should be understood that the above description of the preferred embodiment is relatively detailed and cannot be regarded as limiting the scope of protection of the patent of the present invention. Under the guidance of the present invention, ordinary technicians in this field can also make substitutions or modifications without departing from the scope of protection of the claims of the present invention, which all fall within the scope of protection of the present invention. The scope of protection requested by the present invention shall be based on the attached claims.

Claims

1. A method for determining the ecological dispatching space of artificial flood peaks in a regulation-counter-regulation cascade reservoir system, characterized in that: The steps include: Step 1. Identify the comprehensive utilization requirements of the regulating and counter-regulating cascade reservoirs and determine the scheduling constraints of the regulating and counter-regulating reservoirs based on reservoir scheduling regulations and scheduling operation practices. Step 2. Based on the ecological regulation practices of regulating reservoirs over the years and the needs of ecological regulation, summarize the ecological regulation methods of artificial flood peaks and determine the ecological regulation implementation period and ecological regulation parameters; Step 3. Based on the long-term inflow data of the regulating reservoir, select a typical year using the frequency analysis method according to the total water inflow during the ecological regulation period; Step 4. For the selected typical year, formulate a calculation plan, carry out water balance calculation, and reversely calculate the ecological operation space of the artificial flood peak of the reservoir; Step 5. Based on the ecological dispatching space obtained by reverse deduction, use the one-dimensional hydrodynamic model to calculate whether the hydraulic conditions between the two dams meet the relevant constraints. If the hydraulic conditions are met, stop the calculation and output the calculation results of the dispatching space at this time; otherwise, return to step 4, re-draft the calculation plan, and deduce the ecological dispatching space until the hydraulic condition constraints are met.

2. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 1 is characterized in that: The scheduling constraints in step 1 include: 1) Flood control constraints: The water level of the regulating reservoir shall not exceed the upper limit of the reservoir level specified in the dispatching regulations, and the discharge flow shall not exceed the upper limit of the flow to ensure flood control safety; 2) Shipping constraints: For regulating the navigation demand in the reservoir area, the water level of the regulating reservoir shall not be lower than the lower limit of the reservoir water level required for navigation in the reservoir area; For navigation between two dams of a regulating-counter-regulating reservoir, the hydraulic conditions between the two dams must meet navigation requirements, that is, the water level fluctuation at each monitoring section between the two dams should not exceed the specified value: For the downstream navigation needs of the counter-regulation reservoir, the outflow of the regulating reservoir must not be lower than the lower limit of the flow to ensure the navigation conditions downstream of the counter-regulation reservoir, and not higher than the upper limit of the flow to ensure the navigation safety downstream of the counter-regulation reservoir; 3) Water supply constraints: The minimum discharge flow of the regulating reservoir should not be lower than the lower limit of the flow to ensure the safety of downstream water supply; 4) Reservoir bank stability constraint: The water level fluctuation amplitude of the regulating reservoir should be lower than the upper limit of the water level fluctuation amplitude to ensure the stability of the reservoir bank; 5) No water abandonment constraint: The discharge flow of the regulating reservoir shall not exceed the maximum flow capacity of the unit of the counter-regulating reservoir; 6) Summary of reservoir water level boundary conditions: Combined with the reservoir operation regulations and the operation constraints of the counter-regulation reservoir, the upper and lower limits of the regulating reservoir water level constraints are given, and the actual operating water level statistics are given in combination with the regulation operation practice of the regulating reservoir.

3. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 1 is characterized in that: The ecological scheduling methods in step 2 specifically include: 1) Determination of the scheduling period: Based on the temperature conditions required for spawning of the target fish species for artificial flood peak ecological scheduling, statistics are collected on the period when the river water temperature reaches that temperature. Combined with the practice data of ecological scheduling over the years, the appropriate period for carrying out artificial flood peak ecological scheduling is determined: t1~t2(T>T0) Where t1 and t2 represent the start and end time nodes of the year suitable for artificial flood peak ecological regulation; T represents the river water temperature; T0 represents the lower limit of the temperature required for artificial flood peak ecological regulation; 2) Determination of dispatching parameters: According to the hydrological conditions required for spawning of fish species in artificial flood peak ecological dispatching, the starting flow Q for regulating reservoirs to carry out artificial flood peak ecological dispatching is determined. 起涨 , daily traffic increase ΔQ 上涨 , Traffic increase duration N 上涨 : The starting flow rate for artificial flood peak ecological regulation should be within the range of hydrological conditions required for spawning of target fish: Where Q1 and Q2 represent the lower and upper limits of the initial flow rate required to stimulate fish spawning, respectively; ΔQ1 and ΔQ2 represent the lower and upper limits of the flow rate increase required to stimulate fish spawning, respectively; a and b represent the lower and upper limits of the number of days of the flow rate increase required to stimulate fish spawning.

4. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 1 is characterized in that: Step 3 specifically includes: Step 3.1 Obtaining the total water volume series for each period: Based on the time period suitable for artificial flood peak ecological regulation described in Step 2, calculate the total water inflow for each period in previous years based on the long series of inflow runoff, and arrange them from largest to smallest to obtain the total water inflow series for each period: <h2 style=";text-align:left;direction:ltr">[W1,W2,W3,…,W<h2 style=";text-align:left;direction:ltr"> n <h2 style=";text-align:left;direction:ltr"> ] Where W represents the total water inflow during the period in the long series of years; n represents the length of the series; Step 3.2 Empirical frequency calculation: Calculate the empirical frequency of water volume in the total water volume series over the years: Where m represents the mth item in the total water inflow series of the time period, P m is the empirical frequency of the mth item in the series, indicating that the total water inflow during the period in the past years is greater than W m possibility; Step 3.3: Select typical years: Based on the results of empirical frequency calculation, select typical high-flow years, normal-flow years, and low-flow years from the total water inflow series of the time period according to the frequencies P = 25%, 50%, and 75%, respectively.

5. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 1 is characterized in that: Step 4 specifically includes: Step 4.1 Calculation scheme: According to the ecological dispatch method described in step 2, the starting flow Q is calculated according to the basic parameters of artificial flood peak ecological dispatch. 起涨 , daily traffic increase ΔQ 上涨 , Traffic increase duration N 上涨 Formulate an ecological dispatching outflow plan; based on the typical year selected in step 3, use the inflow from typical year t1 to t2 as the water inflow condition for the ecological dispatching period; and formulate the reservoir water level Z1 at the beginning of the period t1 and the reservoir water level Z2 at the end of the period t2 according to the upper and lower limits of the regulating reservoir water level in step 1; Step 4.2 Calculation of scalable water volume: The scalable water volume of the regulating reservoir during the period t1 to t2 includes the inflow water volume W 入库 And storage water volume W 库存 ; W 库存 =f(Z2)-f(Z1) Where, f(Z2) represents the water level and storage capacity curve when the reservoir water level at the end of time period t2 is Z2, and f(Z1) represents the water level and storage capacity curve when the reservoir water level at the end of time period t1 is Z1; Where Q(t) represents the inflow of the regulating reservoir in the period t1 to t2 in a typical year; During the period from t1 to t2, the total amount of water available for dispatch in the regulating reservoir is: IN 可调度水量 =In 库存 +W 入库 Step 4.3 Calculation of ecological dispatch water demand: During the period t1 to t2, the ecological dispatch water demand of artificial flood peak is W 生态 for: 4) Constraint satisfaction judgment: Calculate the average daily flow rate during the non-ecological scheduling period between t1 and t2 based on the available water volume and the ecological scheduling water demand; and set judgment conditions to determine whether the available water volume, the average daily flow rate during the non-ecological scheduling period, and the minimum inflow during the ecological scheduling period meet the judgment conditions. If the conditions are met, the range of the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2 is the scheduling space for the artificial flood peak ecological scheduling during the time period t1 to t2; if the conditions are not met, the calculation plan needs to be adjusted, and the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2 need to be re-calculated until the judgment conditions are met.

6. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 5 is characterized in that: The judgment conditions are as follows: Where Q 最小入库 Indicates the minimum inflow during the non-ecological scheduling period from t1 to t2; Indicates the average daily drawdown of the regulating reservoir The corresponding maximum daily discharge volume is It indicates the lower limit of flow to ensure navigation conditions downstream of the counter-regulation reservoir. represents the upper limit of flow to ensure navigation safety downstream of the counter-regulation reservoir, Q 非生态 represents the average daily flow during the non-ecological dispatch period, It indicates the lower limit of flow rate to ensure the safety of downstream water supply. Indicates the maximum flow capacity of the unit in the counter-regulation reservoir.

7. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 6 is characterized in that: The average daily flow rate during the non-ecological dispatch period is: Where N 非生态调度时段 Indicates the number of days during which ecological scheduling is not carried out between t1 and t2.

8. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 7 is characterized in that: Step 5 specifically includes: Step 5.1 Model construction: Establish a hydrodynamic model between the two dams of the regulating-counter-regulating reservoir; Step 5.2: Determine the hydraulic conditions: Take the discharge process of the regulating reservoir during the ecological operation period and the discharge process during the non-ecological operation period as the hydrodynamic input conditions between the two dams of the regulating-counter-regulating reservoir, calculate the hydraulic conditions between the two dams, and calculate the water level fluctuation at each monitoring section between the two dams. If the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation result at this time is output; otherwise, return to step 4, re-plan the reservoir water level Z1 at the beginning of the time period t1 and the reservoir water level Z2 at the end of the time period t2, and deduce the scheduling space until the hydraulic condition constraints are met.

9. The method for determining the artificial flood peak ecological dispatching space of the regulation-counter-regulation cascade reservoir according to claim 8 is characterized in that: The water conservancy conditions should meet the following requirements: Where, is the water level variation at each monitoring section between the two dams, i represents the i-th monitoring section, It specifies the value of water level fluctuation at each monitoring section of navigation between the two dams.

10. A regulation-counter-regulation cascade reservoir artificial flood peak ecological dispatching space determination system, characterized in that: include: Scheduling constraint determination module: This module is used to sort out the comprehensive utilization requirements of regulating and counter-regulating cascade reservoirs and determine the scheduling constraints of regulating and counter-regulating reservoirs based on reservoir scheduling regulations and scheduling operation practices; Scheduling method determination module: It is used to summarize the artificial flood peak ecological scheduling method based on the ecological scheduling practice of regulating reservoirs over the years and the demand for ecological scheduling, and determine the ecological scheduling implementation period and ecological scheduling parameters; Typical year selection module: It is used to select typical years based on the long series of inflow runoff data of the regulating reservoir and the total water inflow during the ecological scheduling period using the frequency analysis method; Scheduling space determination module: This module is used to formulate calculation plans for selected typical years, conduct water balance calculations, and reversely adjust the ecological scheduling space of artificial flood peaks in reservoirs; The scheduling space calculation result output module is used to calculate whether the hydraulic conditions between the two dams meet the relevant constraints based on the ecological scheduling space obtained by reverse deduction using a one-dimensional hydrodynamic model. If the hydraulic conditions are met, the calculation is stopped and the scheduling space calculation result at that time is output; otherwise, the calculation plan is re-drafted to deduce the ecological scheduling space until the hydraulic condition constraints are met; The regulation-counter-regulation cascade reservoir artificial flood peak ecological scheduling space determination system is used to execute the steps in the regulation-counter-regulation cascade reservoir artificial flood peak ecological scheduling space determination method according to any one of claims 1 to 9.

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