Ecological flow identification method, equipment, medium and system based on lowest water level
By selecting monitoring sections in the river channel of the hydropower station, building the water level and flow relationship equations of the standard section, solving the lowest water level, and determining whether the ecological flow discharge meets the standards through real-time monitoring of the measured water level and the lowest water level, the river section pattern is solved The problem of low accuracy of ecological traffic caused by deformation has achieved higher accuracy of ecological traffic monitoring.
Patent Information
- Application Number
- CN202411527613.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-02-14
AI Technical Summary
When determining ecological flow in the prior art, the deformation of the river section morphology leads to low accuracy, especially in mountainous rivers. Due to the particularity of geographical, geomorphological and climatic conditions, the river section morphology is prone to change, affecting the accurate monitoring of ecological flow.
Using the ecological flow recognition method based on the lowest water level, the monitoring section is selected from the river channel between the dam behind the target hydropower station and the tail water reflux, and the relationship equation between the water level and flow of the standard section is constructed, the lowest water level is solved, and the real-time Monitor the comparison between the measured water level and the lowest water level to determine whether the ecological flow discharge meets the standards.
It reduces the difficulty of monitoring ecological flow discharge of hydropower stations, improves the accuracy of monitoring, and ensures that the minimum water level and ecological flow discharge can be reliably determined without being affected by river landforms and environmental conditions.
Smart Images
Figure CN119437361A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of water environment monitoring, and in particular to an ecological flow identification method, equipment, medium and system based on a minimum water level. Background Art
[0002] Ecological flow refers to the water flow required to maintain the ecological environment in the water flow area. The minimum ecological flow requirement for hydropower stations is the basic guarantee for maintaining the ecological balance of downstream organisms.
[0003] In related technologies, a relationship curve between the water level and area of a river section can be established, and water level and flow velocity can be monitored. In the process of determining the ecological flow, the area passing through the river section in real time can be identified based on the relationship curve between the water level and area, and the flow velocity obtained by real-time monitoring can be combined to finally obtain the ecological flow of the river section.
[0004] However, the ecological flow determination scheme provided in the related art usually requires the cross-sectional shape of the river channel to remain stable. When the cross-sectional shape of the river channel is deformed, there is a problem that the determined ecological flow is not accurate. Summary of the invention
[0005] The present disclosure is proposed in view of the above problems and provides an ecological flow identification method, equipment, medium and system based on the minimum water level, which reduces the difficulty of ecological flow discharge monitoring of hydropower stations and improves the accuracy of ecological flow discharge monitoring.
[0006] According to one aspect of the present disclosure, a method for identifying ecological flow based on a minimum water level is provided, comprising:
[0007] Select a monitoring section in the river between the water barrier dam of the target hydropower station and the confluence of the tailwater, and determine the minimum ecological flow of the monitoring section based on the hydrological method;
[0008] Constructing a first relationship equation between the water level and the flow rate of a standard section, wherein the standard section is a section of a standard river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center;
[0009] Substituting the minimum ecological flow of the monitoring section into the first relationship equation between the water level and flow of the standard section for solving, to obtain the lowest water level that satisfies the minimum ecological flow of the target hydropower station;
[0010] If the measured water level of the standard river channel is greater than or equal to the minimum water level, it is determined that the ecological flow discharge of the target hydropower station meets the standards.
[0011] According to another aspect of the present disclosure, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the above-mentioned ecological flow identification method based on the minimum water level.
[0012] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned ecological flow identification method based on the minimum water level is implemented.
[0013] According to another aspect of the present disclosure, there is provided an ecological flow identification system based on a minimum water level, comprising:
[0014] A vertical pole is set on one side of a standard river channel, wherein the standard river channel is a river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center after selecting a monitoring section from the river channel between the water retaining dam of the target hydropower station and the confluence of the tailwater, and the section of the standard river channel is the standard section;
[0015] A water level meter and a remote terminal unit RTU are installed on the vertical pole, the water level meter is connected to the RTU, and the RTU is connected to the terminal device, wherein the RTU is used to send the actual water level of the standard river channel measured by the water level meter to the terminal device, so that the terminal device can be used to perform ecological flow identification based on the minimum water level for the target hydropower station based on the above-mentioned ecological flow identification method based on the minimum water level.
[0016] According to the ecological flow identification method, device, medium and system based on the minimum water level of the embodiments of the present disclosure, on the one hand, after determining the minimum water level of the minimum ecological flow of the target hydropower station, the comparison result of the measured water level and the minimum water level can be obtained through real-time measurement to determine whether the ecological flow discharge of the target hydropower station meets the standard, and the ecological flow discharge monitoring of the hydropower station can be realized without other parameters, thereby reducing the difficulty of ecological flow discharge monitoring of the hydropower station; on the other hand, the minimum water level is determined based on the standard river channel constructed based on the monitoring section. The parameters of the standard river channel are not affected by the river channel topography and other environmental conditions, and the standard section of the standard river channel will not be deformed, which can ensure the reliability and accuracy of the determined minimum water level, and further ensure the accuracy of the ecological flow discharge monitoring results of the hydropower station based on the minimum water level.
[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and other purposes, features and advantages of the present disclosure will become more apparent by describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same reference numerals generally represent the same components or steps.
[0019] Figure 1 It is a schematic diagram of an application scenario of an ecological flow identification solution based on a minimum water level according to an embodiment of the present disclosure.
[0020] Figure 2 is a flow chart illustrating a method for identifying an ecological flow based on a minimum water level according to an embodiment of the present disclosure.
[0021] Figure 3 is a block diagram illustrating an apparatus for identifying ecological flow based on a minimum water level according to an embodiment of the present disclosure.
[0022] Figure 4 is a schematic diagram illustrating a computer program product according to an embodiment of the present disclosure.
[0023] Figure 5 is a hardware block diagram illustrating an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the present disclosure more obvious, the exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the exemplary embodiments described here.
[0025] In the related technology, during the river ecological flow discharge monitoring process, a relationship curve between the water level and area of the river section can be established in advance, and the water level and flow rate can be monitored in real time. Furthermore, the area passing through the river section in real time can be identified based on the relationship curve between the water level and area, and combined with the flow rate obtained by monitoring, the ecological flow of the river section can be finally obtained.
[0026] However, the ecological flow determination scheme provided in the relevant technology usually requires the cross-sectional morphology of the river to remain stable. However, in mountainous areas with unique river geography, landform and climatic conditions, there is a widespread phenomenon of river ecological function degradation and fragile river habitats. Most mountain rivers are undeveloped, and the river cross-sections are usually irregular. In particular, they have a natural sand and gravel underlying surface. When mountain torrents come, the underwater terrain is often changed due to erosion. The cross-sectional morphology of such mountain rivers that are easily eroded often changes, and the deformation of the river cross-section results in a low accuracy in the determined ecological flow. In addition, mountain rivers have obvious wet and dry seasons, and the river water level corresponding to the dry season is relatively low, which increases the difficulty of water level measurement, further weakening the accuracy of the ecological flow determined in the relevant technology.
[0027] In order to solve the above problems, the present disclosure provides an ecological flow identification solution based on the minimum water level. Figure 1 A schematic diagram of an application scenario of an ecological flow identification solution based on a minimum water level provided by an embodiment of the present disclosure is shown, including:
[0028] A vertical pole 101 is set on one side of the standard river channel 10, wherein the standard river channel is the river channel from the water retaining dam of the target hydropower station to the confluence of the tailwater. After selecting the monitoring section, the river channel is constructed by extending the monitoring section upstream and downstream by a preset length, and the section of the standard river channel is the standard section;
[0029] A water level meter 102 and a remote terminal unit (RTU) are installed on the pole 101, wherein the RTU is arranged in a chassis 103, the water level meter 102 is connected to the RTU, and the RTU is connected to a terminal device 104, wherein the RTU is used to send the actual water level of the standard river channel measured by the water level meter 102 to the terminal device 104, so that the terminal device 104 is used to perform ecological flow identification on the target hydropower station based on the ecological flow identification method based on the minimum water level provided in an embodiment of the present disclosure.
[0030] It should be noted that in the embodiment of the present disclosure, the probe of the water level meter 102 is placed above the water surface, which can realize non-contact measurement of the water level and is not affected by environmental factors such as water quality, temperature, humidity, wind speed, rainfall, etc., thereby ensuring the reliability of the measured water level data and not destroying the water flow structure; wherein, the water level meter 102 can be a radar water level meter, and since the radar water level meter has no monitoring blind spot, the accuracy of the measured water level data can be improved; the terminal device can be a computer, a notebook or a tablet computer, etc.
[0031] In an optional embodiment, if Figure 1As shown, the ecological flow identification system based on the minimum water level also includes: an image sensor 105 installed on the vertical pole 101 and a water gauge 106 arranged in the standard river channel, the image sensor 105 is connected to the RTU, wherein the RTU is used to send the water gauge image obtained by the image sensor 105 to the terminal device 104, the terminal device 104 is used to identify the water gauge image to obtain the measured water level of the standard river channel, and based on the ecological flow identification method based on the minimum water level provided in the embodiment of the present disclosure, the ecological flow identification is performed on the target hydropower station, wherein the image sensor 105 can be a camera.
[0032] It should be noted that in the embodiment of the present disclosure, when a water gauge 106 is installed in the standard river channel, the lowest water level that meets the minimum ecological flow of the target hydropower station determined by the embodiment of the present disclosure can be marked on the water gauge 106, so that the staff can manually judge whether the ecological flow discharge meets the standard; wherein, the water gauge 106 and the water level meter 102 use the same elevation reference, which can improve the accuracy of ecological flow identification based on the minimum water level; the target hydropower station is a hydropower station that needs to perform ecological flow identification.
[0033] In an optional embodiment, if Figure 1 As shown, the ecological flow identification system based on the minimum water level also includes: a solar panel 107 arranged on the pole 101, and a battery installed in the chassis 103, wherein the solar panel 107 is used to convert solar energy into electrical energy and store it in the battery, and the battery is used to power the RTU, the water level meter 102 and / or the image sensor 105.
[0034] Figure 2 A flowchart of an ecological flow identification method based on a minimum water level according to an exemplary embodiment of the present disclosure is shown. The method can be applied to a terminal device, such as Figure 2 As shown, the method of the embodiment of the present disclosure may include:
[0035] Step S201, selecting a monitoring section in the river between the water barrier dam of the target hydropower station and the confluence of the tailwater, and determining the minimum ecological flow of the monitoring section according to a hydrological method;
[0036] Step S202, constructing a first relationship equation between water level and flow rate at a standard section;
[0037] Among them, the standard section is the section of the standard river constructed by extending the preset length upstream and downstream with the monitoring section as the center;
[0038] Step S203, substituting the minimum ecological flow of the monitoring section into the first relationship equation between the water level and the flow of the standard section to obtain the lowest water level that satisfies the minimum ecological flow of the target hydropower station;
[0039] Step S204: If the measured water level of the standard river channel is greater than or equal to the minimum water level, it is determined that the ecological flow discharge of the target hydropower station meets the standard.
[0040] In summary, the ecological flow identification method based on the minimum water level provided in the embodiment of the present disclosure can determine the minimum ecological flow of the monitoring section selected at the target hydropower station, and then determine the water level-flow relationship equation of the standard section of the standard river channel constructed based on the monitoring section; further, by monitoring the minimum ecological flow of the section, the water level-flow relationship equation of the standard section is solved to obtain the minimum water level that satisfies the minimum ecological flow of the target hydropower station; and by comparing the measured water level monitored in real time with the minimum water level that satisfies the minimum ecological flow of the target hydropower station, it is determined whether the ecological flow discharge meets the standard; on the one hand, in determining the target hydropower station After the lowest water level of the minimum ecological flow of the station is measured, the comparison result of the measured water level and the lowest water level is obtained through real-time measurement to determine whether the ecological flow discharge of the target hydropower station meets the standard. The ecological flow discharge monitoring of the hydropower station can be realized without other parameters, which reduces the difficulty of monitoring the ecological flow discharge of the hydropower station. On the other hand, the lowest water level is determined based on the standard river channel constructed based on the monitoring section. The parameters of the standard river channel are not affected by the river channel topography and other environmental conditions, and the standard section of the standard river channel will not be deformed, which can ensure the reliability and accuracy of the determined lowest water level, and further ensure the accuracy of the ecological flow discharge monitoring results of the hydropower station based on the lowest water level.
[0041] The following Figure 2 The specific implementation methods of each step in the embodiment shown are described in detail:
[0042] In step S201, the terminal device may select a monitoring section in the river between the back of the water retaining dam of the target hydropower station and the confluence of the tailwater, and determine the minimum ecological flow of the monitoring section according to a hydrological method.
[0043] In the embodiment of the present disclosure, the target hydropower station is a hydropower station that requires ecological flow discharge monitoring, and the monitoring section can be any section of the river between the dam of the target hydropower station and the confluence of the tailwater. Specifically, it can be determined based on actual needs, and the embodiment of the present disclosure does not limit this.
[0044] In an optional embodiment, the process of the terminal device determining the minimum ecological flow of the monitoring section according to the hydrological method may include: obtaining the area of the to-be-treated basin of the target hydropower station above the monitoring section; and obtaining the reference basin area and reference flow of the reference basin above the control station; then, based on the proportional relationship between the to-be-treated basin area and the reference basin area, and the reference flow, determining the minimum ecological flow of the monitoring section, wherein the difference in meteorological conditions and underlying surface factors between the reference basin and the to-be-treated basin meets the preset requirements. The minimum ecological flow of the monitoring section can be determined by the area and flow of the reference basin, as well as the area of the to-be-treated basin where the monitoring section is located. Since the reference basin has the same or similar meteorological conditions and underlying surface factors as the to-be-treated basin, the accuracy of the minimum ecological flow of the determined monitoring section can be guaranteed.
[0045] It should be noted that the difference in meteorological conditions and underlying surface factors between the reference basin and the basin to be processed meeting the preset requirements means that the meteorological conditions and underlying surface factors of the reference basin are the same as those of the basin to be processed, or the difference values of the meteorological conditions and underlying surface factors meet the preset conditions. The preset conditions can be determined based on actual needs, and the embodiments of the present disclosure do not limit this; among which, the underlying surface factors may include topography (such as altitude and / or windward and leeward, etc.), sea and land location, ocean currents and vegetation coverage.
[0046] In an optional implementation, the reference flow includes the reference flow of the previous historical year before the current year. The process of the terminal device determining the minimum ecological flow of the monitoring section based on the proportional relationship between the area of the to-be-processed basin and the area of the reference basin, as well as the reference flow, may include: determining the ratio of the area of the to-be-processed basin to the area of the reference basin to obtain a target proportional parameter; then, determining the product of the target proportional parameter and the reference flow to obtain the minimum ecological flow of the monitoring section. The reference flow of the previous year in a hydrologically similar basin can be used to determine the minimum ecological flow of the monitoring section, thereby improving the efficiency of obtaining the minimum ecological flow of the monitoring section.
[0047] Wherein, in the case where the reference flow includes the reference flow of the previous historical year before the current year, the process in which the terminal device can determine the minimum ecological flow of the monitoring section based on the hydrological analogy method can be implemented based on the first formula, and the first formula is:
[0048]
[0049] In Formula 1, F 设 is the area of the watershed to be treated, F 参 is the reference basin area, Q 参 is the reference flow rate, Q 设It is the minimum ecological flow of the monitoring section.
[0050] In an optional embodiment, the reference flow includes reference flows of multiple historical years. The process of the terminal device determining the minimum ecological flow of the monitoring section based on the reference basin area, the reference flow and the basin area to be processed may include: determining the ratio of the basin area to be processed to the reference basin area to obtain a target ratio parameter; then, determining the product of the mean of the reference flows of the multiple historical years and the target ratio parameter to obtain the initial minimum ecological flow of the monitoring section; further, determining the product of the initial minimum ecological flow and a preset flow ratio value as the minimum ecological flow of the monitoring section. The reference flows of multiple historical years in hydrologically similar basins can be used to determine the minimum ecological flow of the monitoring section, thereby improving the reliability of obtaining the minimum ecological flow of the monitoring section.
[0051] Wherein, in the case where the reference flow includes reference flows of multiple historical years, the process of determining the minimum ecological flow of the monitoring section by the terminal device based on the reference basin area, the reference flow and the basin area to be processed can be implemented based on the second formula, which is:
[0052]
[0053] In formula 2, is the average of the reference flow in multiple historical years, is the initial minimum ecological flow of the monitoring section, n% is the preset flow ratio value, Q min It is the minimum ecological flow of the monitoring section.
[0054] It should be noted that in the embodiment of the present disclosure, the preset flow ratio value and the number of multiple historical years can be determined based on actual needs, and the embodiment of the present disclosure is not limited to this. For example, the preset flow ratio value can be 10% or 15%; the multiple historical years can be the first 30 years or 25 years before the current year.
[0055] In step S202, the terminal device may construct a first relationship equation between the water level and flow rate of the standard section.
[0056] In the embodiment of the present disclosure, the standard section is a section of a standard river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center, such as Figure 1 As shown, Figure 1 A schematic diagram of a standard river channel is shown, and the cross section of the standard river channel can be a standard cross section.
[0057] It can be understood that in the actual application process, the standard river channel can be an actually constructed river channel, and the terminal device can store the basic parameter information of the standard section of the constructed standard river channel, wherein the standard section can be a trapezoid, and the basic parameter information of the standard section can include: the bottom width a, top width b, height h, cross-sectional slope m, average bottom slope i and other standard section characteristic values of the standard section; wherein the average bottom slope is the average bottom slope from the upstream of the river channel to the standard section; the basic parameter information of the standard section can also include the river channel roughness n, and the river channel roughness n can be calibrated by measuring data and hydrological data. The measuring data is measured under the 2000 National Geodetic Coordinate System and the 1985 National Height Datum.
[0058] In an optional embodiment, the process of constructing the first relationship equation between the water level and flow of the standard section by the terminal device may include: obtaining basic parameter information of the standard section; then, determining the second relationship equation between the water level and area of the standard section, and the third relationship equation between the water level and the wetted perimeter based on the basic parameter information; further, constructing the first relationship equation between the water level and flow of the standard section based on the second relationship equation, the third relationship equation and the Manning formula. The second relationship equation between the water level and area of the standard section, and the third relationship equation between the water level and the wetted perimeter can be determined through the basic parameter information of the standard section, and the second relationship equation used to characterize the relationship between the water level and area of the standard section, and the third relationship equation used to characterize the water level and wetted perimeter of the standard section are introduced into the Manning formula to achieve the characterization of the relationship between the water level and flow of the standard section, and obtain the first relationship equation, thereby improving the reliability of the first relationship equation between the water level and flow of the standard section.
[0059] In an optional implementation, the process of the terminal device determining the second relationship equation between the water level and the area of the standard section and the third relationship equation between the water level and the wetted perimeter based on the basic parameter information may include: determining the second relationship equation and the third relationship equation based on the bottom width and the cross-sectional slope of the standard section, wherein the second relationship equation is:
[0060]
[0061] In formula 3, A is the area of the standard section, a is the bottom width of the standard section, m is the cross-sectional slope of the standard section, and H is the water level of the standard section;
[0062] The third relationship equation is:
[0063]
[0064] In Formula 4, χ is the wetted perimeter of the standard section.
[0065] It should be noted that the Manning formula can be:
[0066]
[0067] In formula 5, R is the hydraulic radius and Q is the flow rate, where Based on the second relationship equation, the third relationship equation and the Manning formula, the first relationship equation between the water level and the flow rate of the standard section is constructed as follows:
[0068]
[0069] Step S203, substituting the minimum ecological flow of the monitoring section into the first relationship equation between the water level and flow of the standard section to solve, and obtaining the lowest water level that satisfies the minimum ecological flow of the target hydropower station.
[0070] Step S204: If the measured water level of the standard river channel is greater than or equal to the minimum water level, it is determined that the ecological flow discharge of the target hydropower station meets the standard.
[0071] In the embodiment of the present disclosure, the terminal device can obtain Figure 1 The measured water level sent by the RTU in the ecological flow identification based on the minimum water level shown, or the water gauge image, combined with the minimum water level that meets the minimum ecological flow of the target hydropower station, is used to judge whether the ecological flow discharge of the target hydropower station meets the standard. When the terminal device obtains the water gauge image, the water gauge image can be identified to obtain the measured water level of the standard river channel.
[0072] It can be understood that when the measured water level of the standard river channel is lower than the minimum water level, it can be determined that the ecological flow discharge of the target hydropower station does not meet the standards.
[0073] An exemplary embodiment of the present disclosure provides an ecological flow identification device based on a minimum water level, and the ecological flow identification device based on a minimum water level may be a terminal device or a chip applied to a terminal device. Figure 3 FIG. 1 shows a schematic block diagram of functional modules of an ecological flow identification device based on a minimum water level according to an exemplary embodiment of the present disclosure. Figure 3 As shown, the ecological flow identification device 300 based on the minimum water level includes:
[0074] The first determination module 301 is configured to select a monitoring section in the river between the water barrier dam of the target hydropower station and the confluence of the tailwater, and determine the minimum ecological flow of the monitoring section according to a hydrological method;
[0075] The construction module 302 is configured to construct a first relationship equation between the water level and the flow rate of a standard section, wherein the standard section is a section of a standard river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center;
[0076] The solution module 303 is configured to substitute the minimum ecological flow of the monitoring section into the first relationship equation between the water level and flow of the standard section to solve the minimum water level that satisfies the minimum ecological flow of the target hydropower station;
[0077] The second determination module 304 is configured to determine that the ecological flow discharge of the target hydropower station meets the standard if the measured water level of the standard river channel is greater than or equal to the minimum water level.
[0078] Optionally, the construction module 302 is configured to:
[0079] Obtaining basic parameter information of the standard section;
[0080] Determine a second relationship equation between the water level and the area of the standard section and a third relationship equation between the water level and the wetted perimeter based on the basic parameter information;
[0081] Based on the second relationship equation, the third relationship equation and the Manning formula, a first relationship equation between the water level and the flow rate of the standard section is constructed.
[0082] Optionally, the construction module 302 is configured to:
[0083] Based on the bottom width and the cross-sectional slope of the standard section, the second relational equation and the third relational equation are determined, and the second relational equation is:
[0084]
[0085] Wherein, A is the area of the standard section, a is the bottom width of the standard section, m is the cross-sectional slope of the standard section, and H is the water level of the standard section;
[0086] The third relationship equation is:
[0087]
[0088] Wherein, χ is the wetted perimeter of the standard section.
[0089] Optionally, the first determining module 301 is configured to:
[0090] Obtaining the watershed area to be processed above the monitoring section of the target hydropower station;
[0091] Obtaining a reference basin area and a reference flow rate of a reference basin above the control site, wherein the difference in meteorological conditions and underlying surface factors between the reference basin and the basin to be processed meets preset requirements;
[0092] Based on the proportional relationship between the area of the watershed to be processed and the area of the reference watershed, as well as the reference flow, the minimum ecological flow of the monitoring section is determined.
[0093] Optionally, the reference flow rate includes the reference flow rate of the previous historical year before the current year.
[0094] The first determining module 301 is configured to:
[0095] Determine the ratio of the area of the watershed to be processed to the area of the reference watershed to obtain a target ratio parameter;
[0096] The product of the target ratio parameter and the reference flow is determined to obtain the minimum ecological flow of the monitoring section.
[0097] Optionally, the reference flow rate includes reference flow rates of multiple historical years.
[0098] The first determining module 301 is configured to:
[0099] Determine the ratio of the area of the watershed to be processed to the area of the reference watershed to obtain a target ratio parameter;
[0100] Determine the product of the reference flow mean of the multiple historical years and the target ratio parameter to obtain the initial minimum ecological flow of the monitoring section;
[0101] The product of the initial minimum ecological flow and the preset flow ratio value is determined as the minimum ecological flow of the monitoring section.
[0102] The exemplary embodiment of the present disclosure also provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor in communication. The memory stores a computer program that can be executed by the at least one processor, and the computer program is used to cause the electronic device to perform the method according to the embodiment of the present disclosure when executed by the at least one processor.
[0103] The exemplary embodiments of the present disclosure also provide a non-transitory computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor of a computer, is used to cause the computer to perform the method according to the embodiments of the present disclosure.
[0104] like Figure 4As shown, the exemplary embodiment of the present disclosure further provides a computer program product 400, including a computer program 401, wherein when the computer program is executed by a processor of a computer, it is used to enable the computer to perform the method according to the embodiment of the present disclosure.
[0105] refer to Figure 5 , a block diagram of an electronic device 500 that can be used as a terminal device of the present disclosure will now be described, which is an example of a hardware device that can be applied to various aspects of the present disclosure. The electronic device is intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples, and are not intended to limit the implementation of the present disclosure described and / or required herein.
[0106] like Figure 5 As shown, the electronic device 500 includes a computing unit 501, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 502 or a computer program loaded from a storage unit 508 into a random access memory (RAM) 503. In the RAM 503, various programs and data required for the operation of the electronic device 500 can also be stored. The computing unit 501, the ROM 502, and the RAM 503 are connected to each other via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.
[0107] A plurality of components in the electronic device 500 are connected to the I / O interface 505, including: an input unit 506, an output unit 507, a storage unit 508, and a communication unit 509. The input unit 506 may be any type of device capable of inputting information to the electronic device 500, and the input unit 506 may receive input digital or character information, and generate key signal inputs related to user settings and / or function control of the electronic device. The output unit 507 may be any type of device capable of presenting information, and may include, but is not limited to, a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. The storage unit 508 may include, but is not limited to, a disk, an optical disk. The communication unit 509 allows the electronic device 500 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks, and may include, but is not limited to, a modem, a network card, an infrared communication device, a wireless communication transceiver, and / or a chipset, such as a Bluetooth™ device, a WiFi device, a WiMax device, a cellular communication device, and / or the like.
[0108] The computing unit 501 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 501 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 501 performs the various methods and processes described above. For example, in some embodiments, the method of the exemplary embodiment of the present disclosure may be implemented as a computer software program, which is tangibly included in a machine-readable medium, such as a storage unit 508. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 500 via the ROM 502 and / or the communication unit 509. In some embodiments, the computing unit 501 may be configured to perform the method of the exemplary embodiment of the present disclosure by any other appropriate means (e.g., by means of firmware).
[0109] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.
[0110] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
[0111] As used in this disclosure, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., disk, optical disk, memory, programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.
[0112] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).
[0113] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.
[0114] A computer system may include clients and servers. Clients and servers are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship to each other.
[0115] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a terminal, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc (DVD); it may also be a semiconductor medium, for example, a solid state drive (SSD).
[0116] Although the present disclosure has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely exemplary illustrations of the present disclosure as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.
Claims
1. A method for identifying ecological flow based on minimum water level, characterized in that: include: Select a monitoring section in the river between the water barrier dam of the target hydropower station and the confluence of the tailwater, and determine the minimum ecological flow of the monitoring section based on the hydrological method; Constructing a first relationship equation between the water level and the flow rate of a standard section, wherein the standard section is a section of a standard river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center; Substituting the minimum ecological flow of the monitoring section into the first relationship equation between the water level and flow of the standard section for solving, to obtain the lowest water level that satisfies the minimum ecological flow of the target hydropower station; If the measured water level of the standard river channel is greater than or equal to the minimum water level, it is determined that the ecological flow discharge of the target hydropower station meets the standards.
2. The method for identifying ecological flow based on the minimum water level according to claim 1, characterized in that: The first relationship equation between the water level and flow rate of the standard section is constructed, including: Obtaining basic parameter information of the standard section; Determine a second relationship equation between the water level and the area of the standard section and a third relationship equation between the water level and the wetted perimeter based on the basic parameter information; Based on the second relationship equation, the third relationship equation and the Manning formula, a first relationship equation between the water level and the flow rate of the standard section is constructed.
3. The method for identifying ecological flow based on the minimum water level according to claim 2, characterized in that: The second relationship equation between the water level and the area of the standard section and the third relationship equation between the water level and the wetted perimeter are determined based on the basic parameter information, including: Based on the bottom width and the cross-sectional slope of the standard section, the second relational equation and the third relational equation are determined, and the second relational equation is: Wherein, A is the area of the standard section, a is the bottom width of the standard section, m is the cross-sectional slope of the standard section, and H is the water level of the standard section; The third relationship equation is: Wherein, χ is the wetted perimeter of the standard section.
4. The method for identifying ecological flow based on the minimum water level according to claim 1, characterized in that: The minimum ecological flow of the monitoring section is determined according to the hydrological method, including: Obtaining the watershed area to be processed above the monitoring section of the target hydropower station; Obtaining a reference basin area and a reference flow of a reference basin above the control site, wherein the difference in meteorological conditions and underlying surface factors between the reference basin and the basin to be processed meets preset requirements; Based on the proportional relationship between the area of the watershed to be processed and the area of the reference watershed, as well as the reference flow, the minimum ecological flow of the monitoring section is determined.
5. The method for identifying ecological flow based on the minimum water level according to claim 4, characterized in that: The reference flow includes the reference flow of the previous historical year before the current year. The determining of the minimum ecological flow of the monitoring section based on the proportional relationship between the area of the to-be-processed watershed and the area of the reference watershed, and the reference flow, comprises: Determine the ratio of the area of the watershed to be processed to the area of the reference watershed to obtain a target ratio parameter; The product of the target ratio parameter and the reference flow is determined to obtain the minimum ecological flow of the monitoring section.
6. The method for identifying ecological flow based on the minimum water level according to claim 4, characterized in that: The reference flow includes reference flow of multiple historical years. The step of determining the minimum ecological flow of the monitoring section based on the reference watershed area, the reference flow and the watershed area to be processed includes: Determine the ratio of the area of the watershed to be processed to the area of the reference watershed to obtain a target ratio parameter; Determine the product of the reference flow mean of the multiple historical years and the target ratio parameter to obtain the initial minimum ecological flow of the monitoring section; The product of the initial minimum ecological flow and the preset flow ratio value is determined as the minimum ecological flow of the monitoring section.
7. An electronic device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the ecological flow identification method based on the minimum water level as described in any one of claims 1 to 6.
8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for identifying ecological flow based on the minimum water level described in any one of claims 1 to 6 is implemented.
9. An ecological flow identification system based on minimum water level, characterized in that: include: A vertical pole is set on one side of a standard river channel, wherein the standard river channel is a river channel constructed by extending a preset length upstream and downstream with the monitoring section as the center after selecting a monitoring section from the river channel between the water retaining dam of the target hydropower station and the confluence of the tailwater, and the section of the standard river channel is the standard section; A water level meter and a remote terminal unit (RTU) are installed on the vertical pole, the water level meter is connected to the RTU, and the RTU is connected to the terminal device, wherein the RTU is used to send the actual water level of the standard river channel measured by the water level meter to the terminal device, so that the terminal device is used to perform ecological flow identification on the target hydropower station based on the ecological flow identification method based on the minimum water level as described in any one of claims 1 to 6.
10. The ecological flow identification system based on the minimum water level according to claim 9, characterized in that: The ecological flow identification system based on the minimum water level also includes: An image sensor mounted on the vertical pole and a water level gauge arranged in the standard river channel, the image sensor and the RTU are connected, wherein the RTU is used to send the water level gauge image captured by the image sensor to the terminal device, the terminal device is used to identify the water level gauge image to obtain the actual water level of the standard river channel, and based on any one of the ecological flow identification methods based on the minimum water level as claimed in claims 1 to 6, perform ecological flow identification on the target hydropower station.