Ecological flow discharge control method and device for hydropower station

Abstract

The present application provides a method and device for controlling the ecological flow discharge of a hydropower station. The method for controlling the ecological flow discharge of a hydropower station includes: determining a river section to be analyzed corresponding to the target hydropower station, and determining the river elevation and target river organisms corresponding to the river section to be analyzed; creating a hydrodynamic model corresponding to the river section to be analyzed according to the river elevation, and obtaining biological environmental factors corresponding to the target river organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen; calculating the biological habitat river area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors; determining the target discharge control parameter according to the biological habitat river area values corresponding to each reference discharge control parameter, and controlling the ecological flow discharge of the target hydropower station based on the target discharge control parameter. Through this method, water resources can be fully utilized, the ecological environment in the river can be protected, and the aquatic organisms in the river can be effectively protected.

Description

Technical Field

[0001] This application relates to the technical field of ecological hydraulics, and particularly to a method and device for controlling the ecological flow discharge of a hydropower station. Background Art

[0002] In the operation of small hydropower stations, the ecological flow discharge of hydropower stations is an important component. The ecological flow discharge of a hydropower station refers to maintaining a certain amount of water flow downstream to ensure the health of the downstream river ecosystem. This measure can reduce the negative impact of the hydropower station on the downstream ecological environment.

[0003] Technicians use methods such as the multi-year average flow method, the average flow method of the driest month, and the flow historical curve method to evaluate the ecological flow of hydropower stations. Such processing methods require hydrological data of the river where the hydropower station is located. Many small hydropower stations are located in mountainous rivers, and the corresponding data of these rivers are lacking. In this case, data of other rivers similar to this river will be selected for reference. However, referring to other hydropower stations will result in large errors in the data, which cannot actually reflect the specific hydrological characteristics of the river, resulting in errors in the ecological flow evaluation of small hydropower stations, unable to effectively protect the downstream aquatic organisms, and being unfavorable for effectively protecting the biodiversity of aquatic organisms. Summary of the Invention

[0004] In view of this, the embodiments of this application provide a method for controlling the ecological flow discharge of a hydropower station. This application also relates to a device for controlling the ecological flow discharge of a hydropower station, a computing device, a computer-readable storage medium, and a computer program product to solve the above problems existing in the prior art.

[0005] According to the first aspect of the embodiments of this application, a method for controlling the ecological flow discharge of a hydropower station is provided, including:

[0006] Determine the river section to be analyzed corresponding to the target hydropower station, and determine the river elevation and target river organisms corresponding to the river section to be analyzed;

[0007] Create a hydrodynamic model corresponding to the river section to be analyzed according to the river elevation, and obtain the biological environmental factors corresponding to the target river organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen;

[0008] Calculate the biological habitat river area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors;

[0009] Determine the target discharge control parameter according to the biological habitat river area values corresponding to each reference discharge control parameter, and control the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

[0010] According to a second aspect of the embodiments of the present application, there is provided a control device for discharging ecological flow of a hydropower station, including:

[0011] A determination module configured to determine a river channel to be analyzed corresponding to a target hydropower station, and determine the river channel elevation and target river channel organisms corresponding to the river channel to be analyzed;

[0012] An acquisition module configured to create a hydrodynamic model corresponding to the river channel to be analyzed according to the river channel elevation, and acquire biological environmental factors corresponding to the target river channel organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen;

[0013] A calculation module configured to calculate the biological habitat river channel area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors;

[0014] A control module configured to determine a target discharge control parameter according to the biological habitat river channel area values corresponding to each reference discharge control parameter, and control the discharge of the ecological flow of the target hydropower station based on the target discharge control parameter.

[0015] According to a third aspect of the embodiments of the present application, there is provided a computing device, including:

[0016] A memory and a processor;

[0017] The memory is used to store computer programs / instructions, and the processor is used to execute the computer programs / instructions. When the computer programs / instructions are executed by the processor, the steps of the above-mentioned method for controlling the discharge of ecological flow of a hydropower station are implemented.

[0018] According to a fourth aspect of the embodiments of the present application, there is provided a computer-readable storage medium storing computer programs / instructions, and when the computer programs / instructions are executed by a processor, the steps of the above-mentioned method for controlling the discharge of ecological flow of a hydropower station are implemented.

[0019] According to a fifth aspect of the embodiments of the present application, there is provided a computer program product including computer programs / instructions, and when the computer programs / instructions are executed by a processor, the steps of the above-mentioned method for controlling the discharge of ecological flow of a hydropower station are implemented.

[0020] The ecological flow discharge control method provided by this application includes determining the river course to be analyzed corresponding to the target hydropower station, and determining the river course elevation and target river course organisms corresponding to the river course to be analyzed; creating a hydrodynamic model corresponding to the river course to be analyzed according to the river course elevation, and obtaining the biological environmental factors corresponding to the target river course organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen; calculating the biological habitat river course area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors; determining the target discharge control parameter according to the biological habitat river course area values corresponding to each reference discharge control parameter, and controlling the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

[0021] Through the method provided by the embodiments of this application, after determining the river course to be analyzed, a two-dimensional hydrodynamic model is created according to the river course elevation, and the biological environmental factors (including flow velocity, water depth, water temperature, and dissolved oxygen) suitable for the survival of the river course organisms in the river course are obtained. Furthermore, the biological habitat river course area values suitable for the river course organisms corresponding to different reference discharge control parameters are simulated in the two-dimensional hydrodynamic model, the target discharge control parameter is determined according to the biological habitat river course area values, and the ecological flow discharge of the target hydropower station is controlled based on the target discharge control parameter. It is ensured that each hydropower station has suitable discharge control parameters, which can not only make full use of water resources but also protect the ecological environment in the river course to be analyzed, and can effectively protect the aquatic organisms in the river course to be analyzed. Description of the Drawings

[0022] Figure 1 is a flowchart of a method for controlling the ecological flow discharge of a hydropower station provided by an embodiment of this application;

[0023] Figure 2 is a processing flowchart of a method for controlling the ecological flow discharge of a hydropower station applied to a hydropower station in a mountain stream;

[0024] Figure 3 is a schematic structural diagram of a device for controlling the ecological flow discharge of a hydropower station provided by an embodiment of this application;

[0025] Figure 4 is a structural block diagram of a computing device provided by an embodiment of this application. Detailed Embodiments

[0026] Many specific details are set forth in the following description in order 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 generalizations without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0027] The terms used in one or more embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present application. The singular forms "a", "the", and "said" used in one or more embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0029] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data that have been authorized by the user or fully authorized by all parties, and the collection, use, and processing of the relevant data need to comply with the relevant laws, regulations, and standards of the relevant region, and a corresponding operation entry is provided for the user to select authorization or rejection.

[0030] First, the noun terms related to one or more embodiments of the present application are explained.

[0031] Wetted perimeter method: The minimum in-channel flow is estimated by using the wetted perimeter as an index to measure the habitat quality. By establishing a relationship curve between the wetted perimeter of the river cross-section and the flow rate, the position of the inflection point is determined based on this curve, and the recommended value of the minimum water requirement is estimated. According to the research and application of the wetted perimeter method, the logarithmic function and power function relationships are respectively used to fit the wetted perimeter-flow relationship. The differences between the slope of 1 method and the maximum curvature method for determining the inflection point in the wetted perimeter method are analyzed theoretically, and it is obtained that regardless of whether the logarithmic function or power function relationship is used to fit the flow rate-wetted perimeter relationship, the estimation result of the slope of 1 method is greater than that of the maximum curvature method.

[0032] Habitat simulation method: It mainly includes three parts: First, conduct a fish survey, select the target fish species and draw the habitat suitability curve; Second, use physical habitat model simulation software to conduct hydraulic simulation, simulate the distribution of factors such as water depth, flow velocity, and substrate in different areas of the river channel under different flow rates. The hydraulic model requires input of river channel data (elevation and attributes of different points) corresponding to the site map, and then input and calibrate the hydraulic data (flow velocity and water depth) collected under known flow rates to ensure that the hydraulic model reasonably simulates the water flow hydraulic conditions within the reasonable simulation flow range; Finally, apply the distribution of each factor obtained from the hydraulic simulation combined with the fish habitat suitability evaluation criteria to the habitat model. The model can evaluate the habitat quality of different areas of the river channel, calculate the habitat quantity corresponding to the depth and flow velocity distribution of different water flows, calculate the weighted available area (WUA) under different flow simulation conditions using the formula, and determine the ecological flow based on the WUA-flow relationship curve.

[0033] Ecological flow: It refers to the minimum flow required to maintain the basic functions of river, lake or ocean ecosystems under certain conditions. It generally refers to the minimum flow that can maintain the river ecosystem and ensure the health and stability of the ecosystem.

[0034] In the ecological flow assessment of small hydropower stations, methods such as the annual average flow method (i.e., Tennant method), the average flow method of the driest month, and the flow duration curve method are used. However, in the actual verification process, some small hydropower stations are mostly located in mountain stream rivers, and the hydrological data of the rivers where they are located is lacking. In this case, hydropower stations in the same basin, adjacent basins or with similar natural geographical characteristics to the river where the verification section is located are usually selected as references, and the ecological flow of the reference hydropower stations is used to calculate the ecological flow of the current hydropower station through the hydrological analogy method. However, the ecological flow obtained by this method has the problem of inaccurate accuracy and cannot effectively protect aquatic biodiversity.

[0035] Based on this, in this application, a method for controlling the ecological flow discharge of hydropower stations is provided. This application also involves a device for controlling the ecological flow discharge of hydropower stations, a computing device, a computer-readable storage medium, and a computer program product, which will be described in detail one by one in the following embodiments.

[0036] Figure 1 The flowchart showing a method for controlling the ecological flow discharge of a hydropower station according to an embodiment of the present application is specifically included in the following steps:

[0037] Step S101: Determine the river channel to be analyzed corresponding to the target hydropower station, and determine the river channel elevation and target river channel organisms corresponding to the river channel to be analyzed.

[0038] Among them, the target hydropower station can be understood as a hydropower station that needs to conduct ecological flow assessment and discharge control. The river channel to be analyzed corresponding to the target hydropower station can be understood as the river channel downstream of the target hydropower station. Further, the river channel to be analyzed can be the river channel between the target hydropower station and the downstream hydropower station. Ecological flow discharge means that during the operation of the hydropower station, sufficient downstream discharge is ensured to avoid adverse effects on the downstream ecological environment, especially on aquatic organisms. Through the ecological flow discharge work, there will be enough flowing water in the rivers and lakes to maintain the health of the ecosystem.

[0039] The river channel elevation refers to the vertical height of the river channel (including the riverbed, water surface, etc.) relative to a certain reference plane, usually expressed in altitude. It is an important parameter for describing the river channel topography, water level changes, and water conservancy project planning.

[0040] The target river channel organisms refer to the organisms that survive in the river channel to be analyzed and need to be protected, such as the protected fish in the river channel to be analyzed.

[0041] In the method provided in the embodiment of the present application, it is necessary to control the discharge of the ecological flow of the target hydropower station to ensure that the ecological environment of the organisms in the river channel downstream of the target hydropower station is not affected. Based on this, after determining the river channel to be analyzed corresponding to the target hydropower station, the river channel elevation and the target river channel organisms of the river channel to be analyzed are further determined. It is convenient to analyze the target river channel organisms in the river channel to be analyzed subsequently, so as to determine appropriate ecological flow discharge parameters.

[0042] In a specific implementation manner provided by the present application, determining the river channel elevation and the target river channel organisms corresponding to the river channel to be analyzed includes:

[0043] Measuring the river channel elevation corresponding to the river channel to be analyzed based on the information collection device;

[0044] Identifying at least one reference river channel organism in the river channel to be analyzed, and determining the target river channel organism from each reference river channel organism.

[0045] There are many ways to obtain the river channel elevation. Relevant information can be obtained through a public geographic information data platform. However, the accuracy of the data obtained by this method is relatively low, and the data of some river channels may not be saved in this data platform. In addition to obtaining from the public platform, the river channel elevation of the river channel to be analyzed can also be obtained through on-site measurement by an information collection device. For example, collecting elevation points along the river channel by a mobile station, generating a high-density point cloud by an unmanned aerial vehicle lidar, and collecting the underwater riverbed elevation by a multibeam echosounder (requiring the cooperation of a ship). In the method provided in the embodiment of the present application, the specific implementation manner of obtaining the river channel elevation is not limited and shall be subject to actual application.

[0046] In the method provided in the embodiments of the present application, at least one reference river channel organism in the river channel to be analyzed will be further identified. Specifically, the reference river channel organism can be understood as any river channel organism identified from the river channel organisms to be analyzed. In practical applications, any river channel organism constitutes the ecological environment of the river channel to be analyzed. After determining at least one reference river channel organism existing in the river channel to be analyzed, a target river channel organism is further selected from the reference river channel organisms.

[0047] Specifically, there may be many reference river channel organisms in a river channel to be analyzed, and some reference river channel organisms have low requirements for the suitability of the living environment and can be ignored in the method provided in the embodiments of the present application. While some reference river channel organisms have certain requirements for the adaptability to the living environment, the reference river channel organisms with requirements for the adaptability to the living environment are the target river channel organisms.

[0048] Furthermore, determining the target river channel organism from each reference river channel organism includes:

[0049] Selecting the organisms for which biological environment elements can be queried from each reference river channel organism as the target river channel organisms.

[0050] In another specific implementation manner provided in the embodiments of the present application, the target river channel organism can also be further determined according to the reference documents. In practical applications, there are some literature materials recording the living habits of various organisms, the suitability indicators of the living environment, etc. In this implementation manner, the river channel organisms for which biological environment elements can be queried through materials, documents, etc. can be selected from each reference river channel organism as the target river channel organisms. Through information such as materials and documents, information such as the biological environment elements corresponding to the target river channel organisms can be queried, which is convenient for having a comparison basis in the subsequent processing process and making the flow discharge control more well-founded.

[0051] Step S102: Create a hydrodynamic model corresponding to the river channel to be analyzed according to the river channel elevation, and obtain the biological environment elements corresponding to the target river channel organisms, where the biological environment elements include flow velocity, water depth, water temperature, and dissolved oxygen.

[0052] The hydrodynamic model is a mathematical model based on the principles of fluid mechanics, used to simulate the dynamic processes such as the flow of water bodies (such as rivers, lakes, oceans, etc.), water level changes, and flow velocity distributions. The hydrodynamic model is an important tool for water resources management, water quality simulation, and water conservancy project design.

[0053] In the method for controlling the ecological flow discharge of a hydropower station provided in the embodiments of the present application, the hydrodynamic model is applicable to a two-dimensional hydrodynamic model. The two-dimensional hydrodynamic model is applicable to scenarios such as floods, estuaries, and horizontal flows of lakes, and is applied to flood inundation range analysis, wetland hydrodynamic research, etc.

[0054] In the embodiments of the present application, a cloud model provided by an open comprehensive water cycle model service platform is used for hydrodynamic calculation, and the governing equations adopt two-dimensional shallow water equations in conservation form. The evolution of river channel flow needs to be able to simulate both rapid flow and slow flow simultaneously, satisfy water volume conservation, and also adapt to the simulation of the evolution process of water flow on dry riverbeds or floodplains. Therefore, a finite volume method numerical discretization format is adopted for numerical solution. In spatial discretization, unstructured grid discretization is adopted to overcome the difficulties caused by complex boundaries and large differences in calculation scales, and local refinement can be performed.

[0055] The method provided by the embodiments of the present application uses the finite volume method to simulate the local flow field of the river channel and constructs a two-dimensional hydrodynamic model that can simulate and calculate the flow velocities in the x and y directions. The two-dimensional hydrodynamic model is a mathematical model based on the principles of fluid mechanics, specifically used to simulate the flow characteristics of water bodies in the horizontal direction (x-y plane), ignoring the flow details in the vertical direction, and is applicable to the study of the hydrodynamic processes of large-scale surface water movement or shallow water environments.

[0056] The biological environmental factors of the target river channel organisms can be understood as the suitability curves of the target river channel organisms. In the method provided by the embodiments of the present application, the biological environmental factors include the flow velocity, water depth, water temperature, and dissolved oxygen in the river channel to be analyzed. In the method provided by the embodiments of the present application, the biological environmental factors of the target river channel organisms can be obtained by querying data literature, etc. For example, taking carp as an example, the suitable flow velocity range for carp is 0.07~0.7 m / s, and the most suitable range is 0.2~0.6 m / s; the suitable water depth range for carp is 0.7~2.2 m, and the most suitable range is 1.0~1.5 m; the suitable water temperature range for carp is 10°C~30°C, and the most suitable range is 20°C~28°C; the suitable dissolved oxygen range for carp is 4 mg / L~10 mg / L, and the most suitable range is 6 mg / L~8 mg / L.

[0057] In the method provided by the embodiments of the present application, for the convenience of subsequent calculations, the water temperature of the biological environmental factors in the method provided by the embodiments of the present application is dimensionless temperature. The dimensionless temperature, also known as the normalized temperature, is a concept in thermodynamics used to describe the ratio of the temperature of an object to a certain reference temperature, independent of specific temperature units, to better understand and compare the thermodynamic properties of different objects. In the methods provided by the subsequent embodiments of the present application, the water temperature can be understood as the dimensionless water temperature after dimensionless processing.

[0058] In practical applications, the biological environmental factors of the target river channel organisms can be obtained by querying existing knowledge.

[0059] Step S103: Calculate the biological habitat river channel area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors.

[0060] After creating the hydrodynamic model and biological environmental elements, the hydrodynamic model can be adjusted according to different reference discharge control parameters, and the influence of the ecological flow discharge of the target hydropower station on the river to be analyzed can be simulated according to the reference discharge control and parameters through the hydrodynamic model.

[0061] The reference discharge control parameter can be understood as the discharge flow rate that controls the ecological flow discharge of the target hydropower station. In practical applications, relevant technical departments will give corresponding approved discharge values for each river course, but this approved discharge value is only a rough value and may not be very suitable for the ecological environment of the river to be analyzed. In the method provided in the embodiment of the present application, the approved discharge value can be used as a basis for adjustment to obtain multiple reference discharge control parameters.

[0062] For example, through query, the approved discharge value of the river to be analyzed is 0.1 m 3 / s, and a flow adjustment value of 0.01 can be set to adjust the approved discharge value to obtain multiple reference discharge control parameters such as "……0.07 m 3 / s, 0.08 m 3 / s, 0.09 m 3 / s, 0.1 m 3 / s, 0.11 m 3 / s, 0.12 m 3 / s……".

[0063] After obtaining multiple reference discharge control parameters, each reference discharge control parameter can be input into the hydrodynamic model to simulate the corresponding biological habitat river area value of the river to be analyzed under each reference discharge control parameter.

[0064] The biological habitat river area value can also be called the weighted available area and the effective habitat area (Weighted Usable Area, WUA). WUA is the core content of habitat evaluation in IFIM (Instream Flow Incremental Methodology), representing the suitable habitat area for fish. In the method provided in the embodiment of the present application, taking the biological of the target river as fish as an example, through multiple reference discharge control parameters and the hydrodynamic model, the actual ecological flow discharge situation of the river to be analyzed is simulated, and then the suitable habitat area for fish to survive is calculated according to the biological environmental elements of fish. Thus, the reference discharge control parameter suitable for fish survival can be found.

[0065] In a specific embodiment provided by the present application, calculating the biological habitat river area value corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter and the biological environmental elements includes SS1031 - S1032:

[0066] S1031. Calculate the biological habitat suitability index corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors.

[0067] In the method provided in the embodiment of the present application, for the convenience of calculation, first calculate the biological habitat suitability index corresponding to each reference discharge control parameter according to each biological environmental factor.

[0068] Among them, calculating the biological habitat suitability index corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors includes:

[0069] Determine the target reference discharge control parameter, where the target reference discharge control parameter is any one of the reference discharge control parameters;

[0070] Divide the river channel to be analyzed into multiple river channel sub-units;

[0071] Statistically analyze the biological habitat suitability index of each river channel sub-unit corresponding to the hydrodynamic model and the target reference discharge control parameter.

[0072] In the method provided in the embodiment of the present application, any one of the multiple reference discharge control parameters is taken as an example for explanation, that is, select the target reference discharge control parameter from the multiple reference discharge control parameters.

[0073] Divide the river channel to be analyzed into multiple river channel sub-units, and then calculate the biological habitat suitability index corresponding to each river channel sub-unit respectively. For example, divide the river channel to be analyzed into n river channel sub-units.

[0074] Specifically, statistically analyzing the biological habitat suitability index of each river channel sub-unit corresponding to the target reference discharge control parameter includes:

[0075] Determine the target river channel sub-unit, where the target river channel sub-unit is any one of the river channel sub-units;

[0076] Calculate the flow velocity suitability value, water depth suitability value, water temperature suitability value, and dissolved oxygen suitability value of the target river channel sub-unit under the target reference discharge control parameter;

[0077] Calculate the biological habitat suitability index of the target river channel sub-unit according to the flow velocity suitability value, the water depth suitability value, the water temperature suitability value, and the dissolved oxygen suitability value.

[0078] In the method provided in the embodiment of the present application, calculate the biological habitat suitability index corresponding to each river channel element according to the hydrodynamic model and the target discharge control parameter. The specific calculation method is shown in the following formula 1:

[0079] (Formula 1)

[0080] Wherein, i is the i th channel sub-unit, i.e., the target channel sub-unit, is the suitable flow velocity value corresponding to the i th channel sub-unit, is the suitable water depth value corresponding to the i th channel sub-unit, is the suitable water temperature value corresponding to the i th channel sub-unit, is the suitable dissolved oxygen value corresponding to the i th channel sub-unit, is the suitable biological habitat index corresponding to the i th channel sub-unit. In practical applications, the product, geometric mean or minimum value of the four suitable values can be used as the biological habitat index; in a specific implementation provided in the embodiments of the present application, the product of the four suitable values is selected as the biological habitat index.

[0081] S1032. Calculate the biological habitat river area values corresponding to each reference discharge control parameter according to each biological habitat index.

[0082] After calculating each biological habitat index, the biological habitat river area values corresponding to each reference discharge control parameter can be calculated according to each biological habitat index.

[0083] Specifically, calculating the biological habitat river area values corresponding to each reference discharge control parameter includes:

[0084] Determine the biological habitat river area value corresponding to the target reference discharge control parameter according to the sub-river area value and biological habitat index corresponding to each channel sub-unit.

[0085] In the method provided in the embodiments of the present application, taking the target reference discharge control parameter as an example for explanation, after obtaining the biological habitat index corresponding to each channel sub-unit through the above method, and then combining the sub-river area value corresponding to each channel sub-unit, the biological habitat river area value corresponding to the target reference discharge control parameter can be calculated.

[0086] Specifically, the specific implementation of calculating the biological habitat river area value is shown in the following Formula 2:

[0087] (Formula 2)

[0088] Wherein, WUA represents the biological habitat river area value corresponding to the target reference discharge control parameter, n isn a river channel sub-unit, i is the i th river channel sub-unit, is the i biological habitat suitability index corresponding to the th river channel sub-unit, is the i sub-river channel area value corresponding to the th river channel sub-unit.

[0089] Through the above formulas 1 and 2, the biological habitat river channel area values corresponding to each reference discharge control parameter can be calculated.

[0090] In the method provided in the embodiment of the present application, the calculation method of WUA is improved, the water temperature and dissolved oxygen of river channel organisms are increased, and the influencing factors on the ecological environment in different scenarios and seasons are fully considered, so that the discharge control parameters can be determined better.

[0091] Step S104: Determine the target discharge control parameter according to the biological habitat river channel area value corresponding to each reference discharge control parameter, and control the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

[0092] After determining the biological habitat river channel area values corresponding to each reference discharge control and parameter, a suitable discharge control parameter can be further selected from them as the target discharge control parameter.

[0093] In a specific implementation manner provided in the present application, determining the target discharge control parameter according to the biological habitat river channel area value corresponding to each reference discharge control parameter includes:

[0094] Construct a relationship curve according to each reference discharge control parameter and the biological habitat river channel area value corresponding to each reference discharge control parameter;

[0095] Determine the point corresponding to the target slope in the relationship curve as the target point, and determine the reference discharge control parameter corresponding to the target point as the target discharge control parameter.

[0096] In this implementation manner, a relationship curve can be constructed according to each reference discharge control parameter and the biological habitat river channel area value corresponding to each reference discharge control parameter. Specifically, a coordinate system with the reference discharge control parameter as the abscissa and the biological habitat river channel area value as the ordinate can be constructed first, and then each reference discharge control parameter and the biological habitat river channel area value corresponding to each reference discharge control parameter are marked and connected in this coordinate system to obtain the relationship curve constructed by each reference discharge control parameter and the biological habitat river channel area value corresponding to each reference discharge control parameter.

[0097] Determine the point corresponding to the target slope in the relationship curve. The target slope is the slope selected in the curve for determining the target discharge control parameter. In the method provided in the embodiments of the present application, the target slope is usually selected as 1, that is, determine the point with a target slope of 1 in the relationship curve as the target point, and further determine the reference discharge control parameter corresponding to the target point as the target discharge control parameter.

[0098] In a specific implementation manner provided in the present application, controlling the ecological flow discharge of the target hydropower station based on the target discharge control parameter includes:

[0099] Obtain the natural water flow;

[0100] When there is no reservoir capacity in the target hydropower station and the natural water flow is less than the target discharge control parameter, conduct ecological flow discharge according to the natural water flow;

[0101] When the natural water flow is greater than or equal to the target discharge control parameter, or there is reservoir capacity in the target hydropower station and the natural water flow is less than the target discharge control parameter, control the ecological flow discharge of the target hydropower station with the target discharge control parameter.

[0102] In the method provided in the embodiments of the present application, after determining the target discharge control parameter, the ecological flow discharge of the target hydropower station can be further controlled according to the target discharge control parameter.

[0103] Specifically, first obtain the natural water flow in the river channel to be analyzed. The natural water flow refers to the water flow in the river channel to be analyzed without human intervention. In the actual nature, the river channel is divided into the dry season and the wet season throughout the year. The natural water flow is small in the dry season and large in the wet season. The target hydropower station can adjust the water volume in different periods, store the excess water in the reservoir of the hydropower station in the wet season, and release the water in the reservoir in the dry season. Thus, the guarantee rate of water use is improved.

[0104] When there is no reservoir capacity in the target hydropower station and the natural water flow is less than the target discharge control parameter, it indicates that the water in the river channel is less at this time, and the discharge is carried out according to the natural water flow, that is, the water in the river channel is not restricted.

[0105] In the wet season, when the water flow in the river channel is large (the natural water flow is greater than or equal to the target discharge control parameter), in order to ensure a suitable living environment for the river organisms in the river channel to be analyzed, the target discharge control parameter can be used to control the ecological flow discharge of the target hydropower station.

[0106] In practical applications, there is also a situation where the water flow in the river channel is small (the natural water flow is less than the target discharge control parameter), but there is water storage capacity in the reservoir of the target hydropower station. In this case, the target discharge control parameter can also be used to control the ecological flow discharge of the target hydropower station, so as to ensure the suitable ecological area of the river channel to be analyzed and the utilization rate of water use.

[0107] In the method provided in the embodiment of the present application, for the difference in the incoming water volume in the target hydropower station in different periods, when the natural water flow is greater than or equal to the target discharge control parameter, the target discharge control parameter is used to control the water flow in the river channel, and the excess water is stored in the reservoir. When the natural water flow is less than the target discharge control parameter, water is taken out from the reservoir for ecological flow discharge to ensure the water flow in the river channel to be analyzed downstream and ensure the suitable survival of river channel organisms.

[0108] Through the method provided in the embodiment of the present application, after determining the river channel to be analyzed, a two-dimensional hydrodynamic model is created according to the river channel elevation, and the biological environment elements suitable for the survival of river channel organisms (including flow velocity, water depth, water temperature, and dissolved oxygen) are obtained according to the river channel organisms in the river channel. Then, the area value of the river channel suitable for the habitat of river channel organisms corresponding to different reference discharge control parameters is simulated in the two-dimensional hydrodynamic model, the target discharge control parameter is determined according to the area value of the river channel suitable for the habitat of river channel organisms, and the ecological flow discharge of the target hydropower station is controlled based on the target discharge control parameter. It is ensured that each hydropower station has a suitable discharge control parameter, which can not only make full use of water resources but also protect the ecological environment in the river channel to be analyzed, and can effectively protect the aquatic organisms in the river channel to be analyzed.

[0109] The following combines the attached Figure 2 , taking the application of the hydropower station ecological flow discharge control method provided in the present application in a hydropower station in a mountain stream as an example, to further illustrate the hydropower station ecological flow discharge control method. Among them, Figure 2 shows the processing flow chart of a hydropower station ecological flow discharge control method applied to a hydropower station in a mountain stream provided in an embodiment of the present application, which specifically includes the following steps:

[0110] Step S201: Determine the river channel to be analyzed corresponding to the target hydropower station, and determine the river channel elevation and target river channel organisms corresponding to the river channel to be analyzed.

[0111] In this embodiment, the catchment area controlled by the target hydropower station is 14.8 km 2 , the cross-basin water diversion area is 5.2 km 2 , the total reservoir capacity is 852,600 m 3 , and the normal reservoir capacity is 687,600 m 3 . The main stream length of the river channel to be analyzed is 19.2 km, and the basin area is about 75 km 2Identify the river channel to be analyzed by carrying a lidar on a drone to obtain the elevation of the river channel to be analyzed. Obtain the target river channel organisms in the river channel to be analyzed by querying hydrological data.

[0112] Step S202: Create a two-dimensional hydrodynamic model corresponding to the river channel to be analyzed according to the river channel elevation, and query the biological environmental factors corresponding to the target river channel organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen.

[0113] Step S203: Divide the river channel to be analyzed into multiple river channel sub-units, and obtain the sub-river channel area values of each river channel sub-unit.

[0114] In this embodiment, the calculation range area of the river channel to be analyzed is meshed using unstructured grids, and the gateway in the low-lying area at the center of the river section is encrypted and refined. After meshing, there are a total of 27,241 two-dimensional gateway units, the minimum side length of the grid is 0.1 m, and the average area of the gateway unit is 0.5 m 2 。

[0115] Step S204: Calculate the suitable values of flow velocity, water depth, water temperature, and dissolved oxygen for each river channel sub-unit corresponding to different reference discharge control parameters according to the two-dimensional hydrodynamic model.

[0116] In this embodiment, the approved discharge value of the river channel to be analyzed is 0.062 m 3 / s. Determine multiple different reference discharge control parameters based on this approved discharge value. Calculate the suitable values of flow velocity, water depth, water temperature, and dissolved oxygen corresponding to each river channel sub-unit for different reference discharge control parameters.

[0117] Step S205: Calculate the biological habitat suitability index corresponding to each river channel sub-unit under each reference discharge control and parameter according to the suitable value of flow velocity, the suitable value of water depth, the suitable value of water temperature, and the suitable value of dissolved oxygen.

[0118] Step S206: Determine the biological habitat river channel area value corresponding to each reference discharge control parameter according to the sub-river channel area value and the biological habitat suitability index corresponding to each river channel sub-unit.

[0119] Step S207: Construct a relationship curve according to each reference discharge control parameter and the biological habitat river channel area value corresponding to each reference discharge control parameter.

[0120] Step S208: Determine the point with a target slope of 1 in the relationship curve as the target point, and determine the reference discharge control parameter corresponding to the target point as the target discharge control parameter.

[0121] Step S209: Control the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

[0122] Through the regulation of the target hydropower station, the water in the reservoir is stored to the normal storage level at the end of March, and the average reservoir storage volume for 30 - 40 days is pre - stored in other months. During the critical period of fish spawning from April to June, the water volume required by fish is satisfied as much as possible, and the ecological flow discharge is carried out according to the ecological flow during the sensitive period of fish.

[0123] Corresponding to the above - mentioned method embodiment, the present application also provides an embodiment of a control device for ecological flow discharge of a hydropower station. Figure 3 The structure diagram of a control device for ecological flow discharge of a hydropower station provided by an embodiment of the present application is shown. As Figure 3 shown, the device includes:

[0124] A determination module 301, configured to determine the river channel to be analyzed corresponding to the target hydropower station, and determine the river channel elevation and target river channel organisms corresponding to the river channel to be analyzed;

[0125] An acquisition module 302, configured to create a hydrodynamic model corresponding to the river channel to be analyzed according to the river channel elevation, and acquire the biological environmental factors corresponding to the target river channel organisms, where the biological environmental factors include flow velocity, water depth, water temperature, and dissolved oxygen;

[0126] A calculation module 303, configured to calculate the biological habitat river channel area values corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors;

[0127] A control module 304, configured to determine the target discharge control parameter according to the biological habitat river channel area values corresponding to each reference discharge control parameter, and control the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

[0128] Optionally, the determination module 301 is further configured to:

[0129] Measure the river channel elevation corresponding to the river channel to be analyzed based on the information collection device;

[0130] Identify at least one reference river channel organism in the river channel to be analyzed, and determine the target river channel organism from each reference river channel organism.

[0131] Optionally, the determination module 301 is further configured to:

[0132] Select the organism that can query the biological environmental factors from each reference river channel organism as the target river channel organism.

[0133] Optionally, the calculation module 303 is further configured to:

[0134] Calculate the biological habitat suitability index corresponding to each reference discharge control parameter according to the hydrodynamic model, at least one reference discharge control parameter, and the biological environmental factors;

[0135] Calculate the biological habitat river area value corresponding to each reference discharge control parameter according to each biological habitat suitability index.

[0136] Optionally, the calculation module 303 is further configured to:

[0137] Determine the target reference discharge control parameter, where the target reference discharge control parameter is any one of the reference discharge control parameters;

[0138] Divide the river channel to be analyzed into multiple river channel sub-units;

[0139] Statistically analyze the biological habitat suitability index of each river channel sub-unit corresponding to the hydrodynamic model and the target reference discharge control parameter.

[0140] Optionally, the calculation module 303 is further configured to:

[0141] Determine the target river channel sub-unit, where the target river channel sub-unit is any one of the river channel sub-units;

[0142] Calculate the flow velocity suitability value, water depth suitability value, water temperature suitability value, and dissolved oxygen suitability value of the target river channel sub-unit under the target reference discharge control parameter;

[0143] Calculate the biological habitat suitability index of the target river channel sub-unit according to the flow velocity suitability value, the water depth suitability value, the water temperature suitability value, and the dissolved oxygen suitability value.

[0144] Optionally, the calculation module 303 is further configured to:

[0145] Determine the biological habitat river area value corresponding to the target reference discharge control parameter according to the sub-river area value and the biological habitat suitability index corresponding to each river channel sub-unit.

[0146] Optionally, the control module 304 is further configured to:

[0147] Construct a relationship curve according to each reference discharge control parameter and the biological habitat river area value corresponding to each reference discharge control parameter;

[0148] Determine the point corresponding to the target slope in the relationship curve as the target point, and determine the reference discharge control parameter corresponding to the target point as the target discharge control parameter.

[0149] Optionally, the control module 304 is further configured to:

[0150] Obtain the natural water flow;

[0151] In the case that the reservoir in the target hydropower station has no storage capacity and the natural water flow is less than the target discharge control parameter, discharge the ecological flow according to the natural water flow;

[0152] In the case that the natural water flow is greater than or equal to the target discharge control parameter, or there is water storage in the target hydropower station and the natural water flow is less than the target discharge control parameter, control the ecological flow discharge of the target hydropower station with the target discharge control parameter.

[0153] Through the device provided by the embodiments of the present application, after determining the river channel to be analyzed, a two-dimensional hydrodynamic model is created according to the river channel elevation, and the biological environment elements suitable for the survival of the river channel organisms in the river channel (including flow velocity, water depth, water temperature, and dissolved oxygen) are obtained. Then, in the two-dimensional hydrodynamic model, the suitable biological habitat river channel area values corresponding to different reference discharge control parameters are simulated, the target discharge control parameter is determined according to the biological habitat river channel area value, and the ecological flow discharge of the target hydropower station is controlled based on the target discharge control parameter. It ensures that each hydropower station has a suitable discharge control parameter, which can not only make full use of water resources but also protect the ecological environment in the river channel to be analyzed, and can effectively protect the aquatic organisms in the river channel to be analyzed.

[0154] The above is a schematic solution of a device for controlling the ecological flow discharge of a hydropower station in this embodiment. It should be noted that the technical solution of the device for controlling the ecological flow discharge of a hydropower station belongs to the same concept as the technical solution of the above-mentioned method for controlling the ecological flow discharge of a hydropower station. For the details not described in the technical solution of the device for controlling the ecological flow discharge of a hydropower station, reference can be made to the description of the technical solution of the above-mentioned method for controlling the ecological flow discharge of a hydropower station.

[0155] Figure 4 FIG. shows a structural block diagram of a computing device 400 according to an embodiment of the present application. The components of the computing device 400 include, but are not limited to, a memory 410 and a processor 420. The processor 420 is connected to the memory 410 through a bus 430, and a database 450 is used to store data.

[0156] The computing device 400 further includes an access device 440, which enables the computing device 400 to communicate via one or more networks 460. Examples of such networks include the Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or a combination of communication networks such as the Internet. The access device 440 may include one or more of any type of wired or wireless network interfaces (e.g., network interface controller (NIC)), such as IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, Worldwide Interoperability for Microwave Access (Wi-MAX) interface, Ethernet interface, Universal Serial Bus (USB) interface, cellular network interface, Bluetooth interface, Near Field Communication (NFC) interface, and so on.

[0157] In one embodiment of the present application, the above components of the computing device 400 and Figure 4 other components not shown may also be connected to each other, for example, via a bus. It should be understood that Figure 4 the block diagram of the computing device shown is for illustrative purposes only and is not a limitation on the scope of the present application. Those skilled in the art can add or replace other components as needed.

[0158] The computing device 400 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile phones (e.g., smartphones), wearable computing devices (e.g., smartwatches, smart glasses, etc.) or other types of mobile devices, or stationary computing devices such as desktop computers or personal computers (PCs). The computing device 400 can also be a mobile or stationary server.

[0159] Wherein, the processor 420 is used to execute the following computer program / instructions, and when the computer program / instructions are executed by the processor, the steps of the above-mentioned hydropower station ecological flow discharge control method are implemented.

[0160] The above is a schematic solution of a computing device according to this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations belong to the same concept. For the details not described in detail in the technical solution of the computing device, reference can be made to the description of the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations.

[0161] An embodiment of this specification also provides a computer-readable storage medium, which stores computer programs / instructions. When the computer programs / instructions are executed by a processor, the steps of the above-mentioned ecological flow discharge control method for hydropower stations are implemented.

[0162] The above is a schematic solution of a computer-readable storage medium according to this embodiment. It should be noted that the technical solution of this storage medium and the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations belong to the same concept. For the details not described in detail in the technical solution of the storage medium, reference can be made to the description of the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations.

[0163] An embodiment of this specification also provides a computer program product, including computer programs / instructions. When the computer programs / instructions are executed by a processor, the steps of the above-mentioned ecological flow discharge control method for hydropower stations are implemented.

[0164] The above is a schematic solution of a computer program product according to this embodiment. It should be noted that the technical solution of this computer program product and the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations belong to the same concept. For the details not described in detail in the technical solution of the computer program product, reference can be made to the description of the technical solution of the above-mentioned ecological flow discharge control method for hydropower stations.

[0165] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired results. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0166] The computer instructions include computer program code, which may be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, external hard drives, magnetic disks, optical discs, computer memories, read-only memories (ROM), random access memories (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of patent practice. For example, in some regions, according to patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0167] It should be noted that for the foregoing method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0168] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0169] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The alternative embodiments do not elaborate on all the details and do not limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this application. The present application selects and specifically describes these embodiments to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A method for controlling ecological flow discharge of a hydropower station, characterized in that: include: Determine a river channel to be analyzed corresponding to a target hydropower station, and determine a river channel elevation and target river channel organisms corresponding to the river channel to be analyzed, wherein the river channel to be analyzed is a river channel downstream of the target hydropower station; A two-dimensional hydrodynamic model corresponding to the river channel to be analyzed is created according to the river channel elevation, and biological environmental factors corresponding to the target river channel organisms are obtained, wherein the biological environmental factors corresponding to the target river channel organisms are suitability curves of the target river channel organisms, and the biological environmental factors include flow velocity, water depth, water temperature and dissolved oxygen; Calculate the biological habitat river area value corresponding to each reference release control parameter according to the two-dimensional hydrodynamic model, at least one reference release control parameter and the biological environment factor; A relationship curve is constructed according to each reference discharge control parameter and the biological habitat river area value corresponding to each reference discharge control parameter, a point corresponding to a target slope is determined as a target point in the relationship curve, and a reference discharge control parameter corresponding to the target point is determined as a target discharge control parameter, and the ecological flow discharge of the target hydropower station is controlled based on the target discharge control parameter.

2. The method according to claim 1, characterized in that Determining the river elevation and target river organisms corresponding to the river to be analyzed, including: Measuring the river elevation corresponding to the river to be analyzed based on the information collection equipment; At least one reference river organism in the river to be analyzed is identified, and a target river organism is determined from among the reference river organisms.

3. The method according to claim 2, characterized in that Target river organisms are identified from various reference river organisms, including: Among the reference river organisms, organisms that can query biological environmental elements are selected as target river organisms.

4. The method according to claim 1, characterized in that Calculating the biological habitat river channel area value corresponding to each reference release control parameter according to the two-dimensional hydrodynamic model, at least one reference release control parameter and the biological environment factor, including: Calculate the biological habitat suitability index corresponding to each reference release control parameter according to the two-dimensional hydrodynamic model, at least one reference release control parameter and the biological environmental factor; The biological habitat river area value corresponding to each reference release control parameter is calculated based on each biological habitat suitability index.

5. The method according to claim 4, characterized in that Calculating the biological habitat suitability index corresponding to each reference release control parameter according to the two-dimensional hydrodynamic model, at least one reference release control parameter and the biological environmental factor, including: Determining a target reference discharge control parameter, wherein the target reference discharge control parameter is any one of the reference discharge control parameters; Dividing the river channel to be analyzed into a plurality of river channel sub-units; The biological habitat suitability index of each river channel subunit corresponding to the two-dimensional hydrodynamic model and the target reference discharge control parameter is counted.

6. The method according to claim 5, characterized in that The biological habitat suitability index of each river channel subunit corresponding to the target reference release control parameter is calculated, including: Determine a target river channel subunit, wherein the target river channel subunit is any one of the river channel subunits; Calculate the suitable value of flow velocity, water depth, water temperature and dissolved oxygen for the target river channel subunit under the target reference release control parameters; The biological habitat suitability index of the target river channel subunit is calculated based on the suitable flow velocity value, the suitable water depth value, the suitable water temperature value and the suitable dissolved oxygen value.

7. The method according to claim 5, characterized in that The biological habitat river area values ​​corresponding to each reference release control parameter are calculated based on each biological habitat suitability index, including: The biological habitat river area value corresponding to the target reference release control parameter is determined according to the sub-river area value corresponding to each river subunit and the biological habitat suitability index.

8. The method according to claim 1, characterized in that Controlling the ecological flow discharge of the target hydropower station based on the target discharge control parameter includes: Obtain natural water flow; When the reservoir in the target hydropower station has no storage capacity and the natural flow is less than the target discharge control parameter, ecological flow discharge is performed according to the natural flow; When the natural flow rate is greater than or equal to the target discharge control parameter, or when there is storage capacity in the target hydropower station and the natural flow rate is less than the target discharge control parameter, the ecological flow discharge of the target hydropower station is controlled with the target discharge control parameter.

9. A hydropower station ecological flow discharge control device, characterized in that: include: A determination module is configured to determine a river channel to be analyzed corresponding to a target hydropower station, and determine a river channel elevation and target river channel organisms corresponding to the river channel to be analyzed, wherein the river channel to be analyzed is a river channel downstream of the target hydropower station; an acquisition module, configured to create a two-dimensional hydrodynamic model corresponding to the river to be analyzed according to the river elevation, and acquire biological environmental factors corresponding to the target river organisms, wherein the biological environmental factors corresponding to the target river organisms are suitability curves of the target river organisms, and the biological environmental factors include flow velocity, water depth, water temperature and dissolved oxygen; A calculation module is configured to calculate the biological habitat river area value corresponding to each reference release control parameter according to the two-dimensional hydrodynamic model, at least one reference release control parameter and the biological environment element; The control module is configured to construct a relationship curve according to each reference discharge control parameter and the biological habitat river area value corresponding to each reference discharge control parameter, determine the point corresponding to the target slope in the relationship curve as the target point, determine the reference discharge control parameter corresponding to the target point as the target discharge control parameter, and control the ecological flow discharge of the target hydropower station based on the target discharge control parameter.

10. A computing device, characterized in that include: Memory and processor; The memory is used to store computer programs / instructions, and the processor is used to execute the computer programs / instructions. When the computer program / instructions are executed by the processor, the steps of the method described in any one of claims 1 to 9 are implemented.

11. A computer-readable storage medium storing a computer program / instruction, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

12. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

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