A reservoir power plant reservoir water inflow monitoring method, device and storage medium

Abstract

This invention discloses a method, device, and storage medium for monitoring the inflow of water into a reservoir power station. In water volume measurement, this invention eliminates the need for constructing ditches; it only requires measuring the average flow velocity of the upstream and downstream river sections and using this average flow velocity to dynamically model the water flow. This allows for relatively accurate monitoring of the inflow of water into the reservoir power station. Therefore, calculating the inflow of water into the power station through dynamic modeling is suitable for measuring the flow of large-volume natural rivers. Compared to traditional techniques, this method not only reduces errors and improves measurement accuracy but also eliminates the need for ditches, thus lowering costs.

Description

Technical Field

[0001] This invention belongs to the field of power station reservoir water volume monitoring technology, specifically relating to a method, device and storage medium for monitoring the inflow of water into a power station reservoir. Background Technology

[0002] Currently, in order to effectively construct the ecological flow monitoring platform for small hydropower stations, ensure ecological water use in rivers and lakes, promote the green development of small hydropower, and maintain the healthy life of rivers, thereby strengthening the technical guidance for monitoring the outflow of small hydropower stations, the effective monitoring of the ecological flow release of small hydropower stations is an important part of the construction of the ecological flow monitoring platform.

[0003] In practical applications, the industry currently uses two common methods for monitoring flow: one is to construct regular cross-sections or install dedicated monitoring equipment for open channels for ditches with low flow (such as sewage discharge ditches); the other is to install water velocity monitoring equipment on natural rivers to make a rough estimate of the cross-sectional flow using point-to-area measurements. However, the aforementioned two methods have the following shortcomings: the first method is only suitable for measuring ditches with low flow, and cannot achieve accurate measurements for natural rivers with high flow; the second method has a large error because it estimates flow by point-to-area measurements; at the same time, due to the complex topography and ground surface, irregular river cross-sections, and large cross-sectional height and width of natural rivers, it is impossible to construct regular ditches for velocity measurement, thus making it impossible to achieve relatively accurate measurements of reservoir inflow. Therefore, it is urgent to provide a method for monitoring the inflow of water into reservoirs that is suitable for measuring the flow of natural rivers with high flow and has high measurement accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a method, device, and storage medium for monitoring the inflow of water into a reservoir power station, in order to solve the problems of large errors caused by point-to-area flow measurement in the prior art, and the inability to construct regular ditches for flow measurement in natural river channels, thus making it impossible to accurately measure the inflow of water into the reservoir.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Firstly, a method for monitoring the inflow of water into a reservoir power station is provided, including:

[0007] Acquire flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross section at the upstream observation station of the target river and the flow velocity data of the river cross section at the downstream observation station of the target river, wherein the target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river;

[0008] Based on the flow velocity data, the average flow velocity of the river section at the upstream observation station and the average flow velocity of the river section at the downstream observation station are determined.

[0009] Obtain the area of ​​the river cross-section at the upstream observation station and the area of ​​the river cross-section at the downstream observation station;

[0010] An upstream flow calculation model is constructed based on the average flow velocity and the area of ​​the river cross-section at the upstream observation station; and a downstream flow calculation model is constructed based on the average flow velocity and the area of ​​the river cross-section at the downstream observation station.

[0011] Based on the upstream flow calculation model and the downstream flow calculation model, the inflow of water into the reservoir is calculated.

[0012] Based on the above-disclosed content, this invention first acquires the flow velocity data of the upstream and downstream sections of the target river. Then, it determines the average flow velocity of the upstream and downstream river sections based on the flow velocity data. Next, it constructs a flow calculation model based on the corresponding area of ​​the upstream and downstream river sections and the aforementioned average flow velocity. Finally, it calculates the flow rate of the upstream and downstream sections based on the flow calculation model, and thus determines the inflow of water into the reservoir. Through the above design, this invention eliminates the need for constructing ditches; it only requires measuring the average flow velocity of the upstream and downstream river sections and using the average flow velocity to dynamically model the flow, achieving relatively accurate monitoring of the inflow of water into the reservoir power station. Therefore, calculating the inflow of water into the power station through dynamic modeling is suitable for measuring the flow rate of large-volume natural rivers. Compared with traditional technologies, it not only reduces errors and improves measurement accuracy but also eliminates the need for ditches, reducing costs.

[0013] In one possible design, the river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points, the multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section.

[0014] Accordingly, based on the flow velocity data, the average flow velocity of the river cross-section at the upstream observation station is determined, including:

[0015] For the i-th set of cross-sectional detection data in several sets of cross-sectional detection data, based on the flow velocity of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, the average flow velocity between all two adjacent cross-sectional detection points in the i-th set of cross-sectional detection data is calculated, and multiple flow velocity values ​​are obtained.

[0016] Calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data;

[0017] When i is polled from 1 to n, n average flow velocity measurements are obtained, where n is the total number of sets of cross-sectional detection data;

[0018] The average flow velocity at the upstream observation station is obtained by calculating the average of the n average flow velocity measurements.

[0019] Based on the above disclosure, this invention discloses a specific calculation process for the average flow velocity of a river cross-section at an upstream observation station. Specifically, the river flow velocity at the upstream observation station is measured multiple times, the average flow velocity measurement value for each measurement is calculated, and finally, all the average flow velocity measurement values ​​are added together and the average value is taken to obtain the average flow velocity of the river cross-section at the upstream observation station.

[0020] In one possible design, the distance between two adjacent cross-section detection points is 3 meters or 5 meters, and the total number of cross-section detection data sets is greater than or equal to 40.

[0021] In one possible design, an upstream flow calculation model is constructed based on the average flow velocity of the river cross-section at the upstream observation station and the area of ​​the river cross-section at the upstream observation station, including:

[0022] Obtain the coefficient between the average flow velocity and the flow velocity at the river cross-section;

[0023] Based on the coefficient between the average flow velocity and the cross-sectional flow velocity of the river, the average flow velocity of the river at the upstream observation station, and the area of ​​the river cross-section at the upstream observation station, the upstream flow calculation model is constructed according to the following formula:

[0024] θ = V × K × F, where θ represents the upstream flow of the target river, V represents the average flow velocity of the river cross section at the upstream observation station, F represents the area of ​​the river cross section at the upstream observation station, and K represents the coefficient between the average flow velocity and the flow velocity of the river cross section.

[0025] Based on the above-mentioned publicly available information, the upstream flow calculation model can be obtained by multiplying the average flow velocity of the river cross section with the corresponding river cross section area, as well as the coefficient between the average flow velocity of the river cross section and the flow velocity of the river cross section. Similarly, the downstream flow calculation model follows the same principle. Through the above design, the water flow of the upstream and downstream of the target river can be calculated using the two flow calculation models. Finally, based on the water flow, the inflow of the reservoir corresponding to the power station can be calculated.

[0026] In one possible design, the river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points, the multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section.

[0027] The coefficient between the average flow velocity and the flow velocity at the river cross-section is obtained, including:

[0028] Obtain water level data corresponding to any cross-sectional detection point and water level data corresponding to a calibration detection point, wherein the distance between the calibration detection point and the any cross-sectional detection point is a threshold, and the straight line connecting the any cross-sectional detection point and the calibration detection point is parallel to the direction of water flow.

[0029] Obtain the horizontal distance between any cross-sectional detection point and the calibration detection point;

[0030] The difference between the water level data at any cross-section detection point and the water level data at the calibrated detection point is calculated to obtain the water level difference;

[0031] Based on the horizontal distance and the water level difference, the coefficient between the average flow velocity and the flow velocity of the river cross section is calculated.

[0032] In one possible design, based on the upstream flow calculation model and the downstream flow calculation model, the inflow volume to the reservoir is calculated, including:

[0033] The water flow time is obtained, and based on the upstream flow calculation model and the water flow time, the upstream inflow of the target river during the water flow time is calculated.

[0034] Based on the downstream flow calculation model and the water flow time, the downstream outflow of the target river during the water flow time is calculated.

[0035] The difference between the upstream inflow and the downstream outflow is taken as the inflow of water into the reservoir during the water flow time.

[0036] Based on the above-disclosed content, this invention discloses a specific calculation process for the inflow of water into the reservoir corresponding to the hydropower station. Specifically, it first uses the upstream and downstream flow calculation model and combines it with the water flow time to calculate the upstream inflow and downstream outflow during that time. The difference between the two is the inflow of water into the reservoir during that time.

[0037] Secondly, a monitoring device for the inflow of water into a reservoir power station is provided, comprising:

[0038] The acquisition unit is used to acquire the flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross section at the upstream observation station of the target river and the flow velocity data of the river cross section at the downstream observation station of the target river, the target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river;

[0039] The flow velocity calculation unit is used to determine the average flow velocity of the river cross section at the upstream observation station and the average flow velocity of the river cross section at the downstream observation station based on the flow velocity data.

[0040] The acquisition unit is also used to acquire the area of ​​the river cross-section at the upstream observation station and the area of ​​the river cross-section at the downstream observation station;

[0041] The model building unit is used to build an upstream flow calculation model based on the average flow velocity of the river cross section at the upstream observation station and the area of ​​the river cross section at the upstream observation station, and to build a downstream flow calculation model based on the average flow velocity of the river cross section at the downstream observation station and the area of ​​the river cross section at the downstream observation station.

[0042] The water flow calculation unit is used to calculate the inflow of water into the reservoir based on the upstream flow calculation model and the downstream flow calculation model.

[0043] In one possible design, the river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points, the multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section.

[0044] The velocity calculation unit, for the i-th set of cross-sectional detection data in a plurality of sets of cross-sectional detection data, is used to calculate the average velocity between all two adjacent cross-sectional detection points in the i-th set of cross-sectional detection data based on the velocity of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, and obtain multiple velocity values.

[0045] The flow velocity calculation unit is used to calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data.

[0046] The flow velocity calculation unit is used to obtain n average flow velocity measurements when i is polled from 1 to n, where n is the total number of sets of cross-sectional detection data;

[0047] The velocity calculation unit is also used to calculate the average of n average velocity measurements to obtain the average velocity of the river cross section at the upstream observation station.

[0048] Thirdly, another device for monitoring the inflow of water into a reservoir power station is provided. Taking the device as an electronic device as an example, it includes a memory, a processor, and a transceiver that are connected in series. The memory is used to store a computer program, the transceiver is used to send and receive messages, and the processor is used to read the computer program and execute the monitoring method for the inflow of water into the reservoir power station as described in the first aspect or any possible design in the first aspect.

[0049] Fourthly, a storage medium is provided, on which instructions are stored, which, when executed on a computer, perform the method for monitoring the inflow of water to the reservoir power station as described in the first aspect or any possible design of the first aspect.

[0050] Fifthly, a computer program product containing instructions is provided, which, when executed on a computer, causes the computer to perform a method for monitoring the inflow of water into a reservoir power station, as described in the first aspect or any possible design of the first aspect.

[0051] Beneficial effects:

[0052] (1) This invention does not require the construction of ditches. It only requires measuring the average flow velocity of the upstream and downstream river sections of the reservoir and using the average flow velocity of the upstream and downstream river sections to dynamically model the water flow. This allows for relatively accurate monitoring of the inflow of water into the reservoir power station. Thus, the dynamic modeling method is suitable for measuring the water flow of large-volume natural rivers. Compared with traditional technologies, this method not only reduces errors and improves measurement accuracy, but also eliminates the need to construct ditches, thus reducing costs. Attached Figure Description

[0053] Figure 1 This is a flowchart illustrating the steps of a method for monitoring the inflow of water into a reservoir power station provided in an embodiment of the present invention.

[0054] Figure 2 A schematic diagram of the installation of an observation station for monitoring the inflow of water into a reservoir power station, provided in an embodiment of the present invention;

[0055] Figure 3A schematic diagram illustrating the principle of river cross-section measurement provided in an embodiment of the present invention;

[0056] Figure 4 A schematic diagram illustrating the principle of river cross-sectional velocity measurement provided in an embodiment of the present invention;

[0057] Figure 5 This is a schematic diagram of the structure of a monitoring device for the inflow of water into a reservoir power station provided in an embodiment of the present invention;

[0058] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0060] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0061] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0062] Example:

[0063] See Figure 1As shown, the method for monitoring the inflow of water into a reservoir power station provided in the first aspect of this embodiment does not require the construction of regular ditches. It can directly establish a flow calculation model for the upstream and downstream of the river by measuring the average flow velocity of the corresponding river cross sections. Finally, based on the flow calculation model of the upstream and downstream of the river, the water volume of the upstream and downstream of the river can be calculated, and the difference between the upstream and downstream water volumes can be used as the inflow of water into the reservoir corresponding to the power station. Therefore, this method is applicable to the measurement of water volume of natural rivers with large flow rates, and since it does not measure flow rate by substituting points for areas, the measurement accuracy is also higher than that of the prior art. Optionally, the method provided in this embodiment can be operated on the monitoring terminal side, but is not limited to this. For example, the monitoring terminal can be, but is not limited to, a personal computer (PC), a tablet computer, a smartphone, and / or a personal digital assistant (PDA). It is understood that the aforementioned execution subject does not constitute a limitation on the embodiments of this application. Accordingly, the operation steps of this method can be, but are not limited to, the steps S1 to S5 below.

[0064] S1. Obtain the flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross-section at the upstream observation station of the target river and the flow velocity data of the river cross-section at the downstream observation station of the target river. The target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river. In specific applications, for example, the flow velocity data of the river cross-section at the upstream observation station of the target river may include, but is not limited to, several sets of cross-section detection data. Optionally, each set of cross-section detection data includes the flow velocity of multiple cross-section detection points. Furthermore, in this embodiment, for example... For example, multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section; similarly, the data contained in the river cross-sectional velocity data at the downstream observation station of the target river is of the same data type as that in the river cross-sectional velocity data at the upstream observation station, except that the cross-sectional detection points in each group of cross-sectional detection data are evenly distributed in the transverse direction of the river cross-section downstream of the target river; of course, for the river cross-sectional velocity data at the downstream observation station, the velocity of each cross-sectional detection point is the measured velocity of the downstream river cross-section.

[0065] See Figure 2 As shown, this discloses one possible installation location for upstream and downstream observation stations of the target river; in this embodiment, Figure 2 Since the dam at Yang'an Station is located upstream of the river, upstream observation stations can be installed, but are not limited to, at a location 100m downstream of the dam at Yang'an Station; similarly, Figure 2The power station in the example is the reservoir power station to be monitored, and its corresponding reservoir is located between the Yang'an Station dam and the Taohua Station. The method provided in this embodiment is to measure the inflow of water into the reservoir located between the Yang'an Station dam and the Taohua Station. The Ming'an Station dam is located downstream of the target river, and its location can be 100m downstream of the Ming'an Station dam. Of course, the various observation stations can also be installed in other ways, and are not limited to the examples mentioned above.

[0066] The following is a method for measuring the flow velocity at a river cross-section, as shown below:

[0067] First, determine the river cross-section. Taking the upstream observation station of the target river as an example, a depth sounder or ADCP (Acoustic Doppler Current Profiler) can be used, but is not limited to, to measure the natural river channel cross-section. For specific applications, see [link to relevant documentation]. Figure 3 As shown, a baseline elevation can be selected first, and then the river cross-section can be measured by pulling a string or sliding a boat with the aforementioned equipment. During the measurement process, it should be ensured that the equipment is always at the same elevation. Next, the water depth is measured every 5cm (the interval can be increased if the riverbed is flat, and reduced if the slope is steep). At the same time, the water level and the slope at the highest water level should also be measured. After the measurement is completed, the aforementioned depth sounder or ADCP equipment is directly connected to the computer (or the CASS mapping system is used for drawing), and the river cross-section at the upstream observation station can be drawn.

[0068] Secondly, after determining the river cross-section, the flow velocity of the river cross-section can be measured. The methods include the following three: (1) the precision measurement method, which mainly arranges N vertical lines on the river cross-section to measure the flow velocity; (2) the simplified measurement method, which arranges 3 to 7 vertical lines in the middle of the river cross-section to measure the flow velocity; (3) the representative vertical line method, which only measures 1 vertical line, and finds representative points in the single vertical line and precision measurement method by comparison, and then measures the flow velocity through the curve relationship between the two; in this embodiment, the first method is preferred.

[0069] For specific implementation, see Figure 4 As shown, a nylon rope can be stretched laterally across the river cross-section at the upstream observation station. A mark is made every 3m or 5m, with each mark serving as a cross-section detection point. Simultaneously, a small boat moves along the rope until it crosses the river cross-section. During this movement, a Doppler current meter is used to measure the flow velocity at each cross-section detection point. After the measurements are completed, a set of cross-section detection data is generated. At the same time, at least 40 consecutive measurements are performed to obtain multiple sets of cross-section detection data. Finally, these data are input into the monitoring terminal for subsequent model construction based on these multiple sets of cross-section detection data.

[0070] In addition, when measuring flow velocity, a measuring rod can be used to measure the water depth at each cross-sectional detection point. When the water depth is greater than the measuring range of the measuring rod, a heavy object can be suspended by a nylon rope and placed in the river. The water depth can be determined by measuring the length of the nylon rope extending into the bottom of the water, thus enabling the recording of the water depth corresponding to each cross-sectional detection point.

[0071] Of course, the detection principle for the cross-sectional data of the river section at the observation station downstream of the target river is the same as the principle exemplified above, and will not be repeated here.

[0072] After obtaining the flow velocity data of the upstream and downstream sections of the target river, the average flow velocity of the river section at the upstream and downstream observation stations can be calculated. The calculation process is shown in step S2 below.

[0073] S2. Based on the flow velocity data, determine the average flow velocity of the river cross-section at the upstream observation station and the average flow velocity of the river cross-section at the downstream observation station. In specific applications, the average flow velocity measurement value of each set of cross-section detection data is calculated, and then the average value is taken to obtain the average flow velocity of the upstream and downstream river cross-sections. Meanwhile, since the calculation process of the average flow velocity of the river cross-section at the upstream and downstream observation stations is the same, the following uses the average flow velocity of the river cross-section at the upstream observation station as an example to illustrate the calculation process in step S2, which may be, but is not limited to, the steps S21 to S24 below.

[0074] S21. For the i-th set of cross-sectional detection data in a plurality of sets of cross-sectional detection data, based on the flow velocities of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, the average flow velocity between all adjacent pairs of cross-sectional detection points in the i-th set of cross-sectional detection data is calculated, resulting in multiple flow velocity values; in specific applications, in the aforementioned Figure 4 Taking the above example, assuming there are 20 marker points, or 20 cross-sectional detection points, we would calculate the average flow velocity between the first and second cross-sectional detection points (that is, add the flow velocities of the first and second cross-sectional detection points and take the average), calculate the average flow velocity between the second and third cross-sectional detection points, calculate the average flow velocity between the third and fourth cross-sectional detection points, and so on, until we calculate the average flow velocity between the nineteenth and twentieth cross-sectional detection points. After the calculation is completed, we can obtain 19 average flow velocities. Of course, when the total number of cross-sectional detection points is different, the calculation principle of the average flow velocity is the same as the example above, and will not be elaborated further here.

[0075] After obtaining the average flow velocity between all adjacent cross-sectional detection points in the i-th cross-sectional detection data, the average value of multiple average flow velocities can be calculated as the average flow velocity measurement value of the i-th cross-sectional detection data, as shown in step S22 below.

[0076] S22. Calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data; after calculating the average flow velocity measurement value of the i-th group of cross-sectional detection data, calculate the average flow velocity measurement value of the remaining cross-sectional detection data according to the method exemplified in step S21 above. After the calculation is completed, calculate the average value of multiple average flow velocity measurement values ​​to obtain the average flow velocity of the river cross-section at the upstream observation station. The calculation process is shown in steps S23 and S24 below.

[0077] S23. When i is polled from 1 to n, n average flow velocity measurements are obtained, where n is the total number of sets of cross-sectional detection data.

[0078] S24. Calculate the average value of n average flow velocity measurements to obtain the average flow velocity of the river cross section at the upstream observation station; of course, in this embodiment, the calculation process of the average flow velocity of the river cross section at the downstream observation station is the same as the calculation process of the average flow velocity of the river cross section at the upstream observation station, and will not be repeated here.

[0079] After obtaining the average flow velocity of the river cross-section at the upstream and downstream observation stations, an upstream flow calculation model can be constructed based on the average flow velocity of the river cross-section at the upstream observation station, and a downstream flow calculation modulus can be constructed based on the average flow velocity of the river cross-section at the downstream observation station. This allows for the subsequent calculation of the inflow of water into the reservoir based on the two models constructed above. The model construction process is shown in steps S3 and S4 below.

[0080] S3. Obtain the area of ​​the river cross section at the upstream observation station and the area of ​​the river cross section at the downstream observation station; in specific applications, the river cross section area at the upstream and downstream observation stations can be obtained by actual measurement by surveyors and then preset into the monitoring terminal.

[0081] S4. Based on the average flow velocity of the river cross-section at the upstream observation station and the area of ​​the river cross-section at the upstream observation station, an upstream flow calculation model is constructed; similarly, based on the average flow velocity of the river cross-section at the downstream observation station and the area of ​​the river cross-section at the downstream observation station, a downstream flow calculation model is constructed. In practical applications, since the construction process of the upstream flow calculation model is the same as that of the downstream flow calculation model, the following uses the upstream flow calculation model as an example to illustrate the model construction process, which may be, but is not limited to, the steps S41 and S42 below.

[0082] S41. Obtain the coefficient between the average flow velocity of the river cross section and the flow velocity of the river cross section; in this embodiment, it refers to the coefficient between the average flow velocity of the river cross section at the upstream observation station and the flow velocity of the river cross section at the upstream observation station, wherein the process of obtaining the aforementioned coefficient is as shown in the following steps S41a to S41d.

[0083] S41a. Obtain water level data corresponding to any cross-sectional detection point and water level data corresponding to a calibration detection point, wherein the distance between the calibration detection point and the any cross-sectional detection point is a threshold, and the straight line connecting the any cross-sectional detection point and the calibration detection point is parallel to the water flow direction; in this embodiment, the aforementioned... Figure 4 For example, that is, in Figure 4 Select any cross-section detection point, and then select an observation point at a preset distance (e.g., 100m) above the cross-section detection point as a calibration detection point. Then, obtain the water level data, i.e., water depth, of the two detection points respectively. The water depth is measured in the same way as the water depth measurement method of the cross-section detection point in step S1 above, and will not be elaborated here.

[0084] After the calibration test point is determined, the horizontal distance between any cross-sectional test point and the calibration test point can be obtained so that the aforementioned coefficient can be calculated based on the horizontal distance and the difference in water depth between the two, as shown in steps S41b to S41d below.

[0085] S41b. Obtain the horizontal distance between any cross-sectional detection point and the calibration detection point.

[0086] S41d. Calculate the difference between the water level data of any cross-section detection point and the water level data of the calibration detection point to obtain the water level difference; of course, in this embodiment, the water level difference is an absolute value.

[0087] S41d. Based on the horizontal distance and the water level difference, calculate the coefficient between the average flow velocity and the flow velocity of the river cross section; in specific applications, the coefficient between the average flow velocity and the flow velocity of the river cross section can be obtained by dividing the water level difference by the horizontal distance.

[0088] After obtaining the coefficient between the average flow velocity and the cross-sectional flow velocity of the river, an upstream flow calculation model can be constructed based on this coefficient, the average flow velocity of the river, and the cross-sectional area of ​​the river, as shown in step S42 below.

[0089] Based on the coefficient between the average flow velocity and the cross-sectional flow velocity of the river, the average flow velocity of the river at the upstream observation station, and the area of ​​the river cross-section at the upstream observation station, the upstream flow calculation model is constructed according to the following formula:

[0090] θ = V × K × F, where θ represents the upstream flow of the target river, V represents the average flow velocity of the river cross section at the upstream observation station, F represents the area of ​​the river cross section at the upstream observation station, and K represents the coefficient between the average flow velocity and the flow velocity of the river cross section.

[0091] Of course, in this embodiment, the expression of the downstream flow calculation model is the same as that of the upstream flow calculation model, except that the values ​​of each parameter in the formula are changed to the average flow velocity of the river cross section at the downstream observation station, the area of ​​the river cross section, and the coefficient between the average flow velocity of the river cross section at the downstream observation station and the flow velocity of the river cross section.

[0092] After constructing the upstream and downstream flow calculation model, the inflow of water into the reservoir can be calculated based on the two models mentioned above, as shown in step S5 below.

[0093] S5. Based on the upstream flow calculation model and the downstream flow calculation model, the inflow of water into the reservoir is calculated; in specific applications, the calculation process of the inflow is shown in steps S51 to S53 below.

[0094] S51. Obtain the water flow time, and based on the upstream flow calculation model and the water flow time, calculate the upstream inflow of the target river during the water flow time; in specific applications, the water flow time can be, but is not limited to, 1 hour, 2 hours, 6 hours, 1 day, 2 days, or 3 days, etc., which is the inflow time of the reservoir.

[0095] S52. Based on the downstream flow calculation model and the water flow time, calculate the downstream outflow of the target river during the water flow time.

[0096] S53. The difference between the upstream inflow and the downstream outflow is taken as the inflow into the reservoir during the water flow time. In specific applications, the inflow into the target river during the water flow time is obtained by multiplying the water flow time by the upstream flow calculation model. Similarly, the outflow into the target river during the water flow time is obtained by multiplying the water flow time by the downstream flow calculation model. Finally, the inflow into the reservoir during the water flow time is obtained by subtracting the two.

[0097] Therefore, through the reservoir power station inflow monitoring method described in detail in steps S1 to S5 above, this invention does not require the construction of regular ditches when measuring inflow. It can directly establish a flow calculation model for the upstream and downstream of the river by measuring the average flow velocity of the corresponding river cross-sections. Finally, based on the flow calculation model of the upstream and downstream of the river, the water volume of the upstream and downstream can be calculated, and the difference between the upstream and downstream water volumes can be used as the inflow of the reservoir power station. Thus, this method is applicable to the measurement of large-flow natural river water, and since it does not measure flow by point, the measurement accuracy is also higher than that of the prior art.

[0098] like Figure 5 As shown, the second aspect of this embodiment provides a hardware device for implementing the method for monitoring the inflow of water into a reservoir power station as described in the first aspect of the embodiment, comprising:

[0099] The acquisition unit is used to acquire the flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross section at the upstream observation station of the target river and the flow velocity data of the river cross section at the downstream observation station of the target river. The target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river.

[0100] The flow velocity calculation unit is used to determine the average flow velocity of the river cross section at the upstream observation station and the average flow velocity of the river cross section at the downstream observation station based on the flow velocity data.

[0101] The acquisition unit is also used to acquire the area of ​​the river cross-section at the upstream observation station and the area of ​​the river cross-section at the downstream observation station.

[0102] The model building unit is used to build an upstream flow calculation model based on the average flow velocity and the area of ​​the river cross-section at the upstream observation station, and to build a downstream flow calculation model based on the average flow velocity and the area of ​​the river cross-section at the downstream observation station.

[0103] The water flow calculation unit is used to calculate the inflow of water into the reservoir based on the upstream flow calculation model and the downstream flow calculation model.

[0104] In one possible design, the velocity calculation unit, for the i-th set of cross-sectional detection data in a plurality of sets of cross-sectional detection data, calculates the average velocity between all adjacent cross-sectional detection points in the i-th set of cross-sectional detection data based on the velocity of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, thereby obtaining multiple velocity values.

[0105] The flow velocity calculation unit is specifically used to calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data.

[0106] The flow velocity calculation unit is specifically used to obtain n average flow velocity measurements when i is polled from 1 to n, where n is the total number of sets of cross-sectional detection data.

[0107] The velocity calculation unit is further used to calculate the average value of n average velocity measurements to obtain the average velocity of the river cross section at the upstream observation station.

[0108] The working process, working details and technical effects of the device provided in this embodiment can be found in the first aspect of the embodiment, and will not be repeated here.

[0109] like Figure 6 As shown, the third aspect of this embodiment provides another monitoring device for the inflow of water into a reservoir power station. Taking the device as an electronic device as an example, it includes: a memory, a processor, and a transceiver connected in sequence. The memory is used to store a computer program, the transceiver is used to send and receive messages, and the processor is used to read the computer program and execute the monitoring method for the inflow of water into a reservoir power station as described in the first aspect of the embodiment.

[0110] For specific examples, the memory may include, but is not limited to, random access memory (RAM), read-only memory (ROM), flash memory, first-in-first-out (FIFO) memory, and / or first-in-last-out (FILO) memory, etc.; specifically, the processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor may be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor, also known as the CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state.

[0111] In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. For example, the processor may not be limited to microprocessors of the STM32F105 series, reduced instruction set computer (RISC) microprocessors, x86 architecture processors, or processors with integrated neural network processing units (NPUs). The transceiver may be, but is not limited to, a Wi-Fi transceiver, a Bluetooth transceiver, a General Packet Radio Service (GPRS) transceiver, a ZigBee (a low-power LAN protocol based on the IEEE 802.15.4 standard) transceiver, a 3G transceiver, a 4G transceiver, and / or a 5G transceiver. Furthermore, the device may also include, but is not limited to, a power module, a display screen, and other necessary components.

[0112] The working process, working details and technical effects of the electronic device provided in this embodiment can be found in the first aspect of the embodiment, and will not be repeated here.

[0113] The fourth aspect of this embodiment provides a storage medium that stores instructions containing the method for monitoring the inflow of water into a reservoir power station as described in the first aspect of the embodiment. That is, the storage medium stores instructions that, when executed on a computer, perform the method for monitoring the inflow of water into a reservoir power station as described in the first aspect.

[0114] The storage medium refers to a carrier for storing data, which may include, but is not limited to, floppy disks, optical disks, hard disks, flash memory, USB flash drives, and / or memory sticks. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0115] The working process, working details, and technical effects of the storage medium provided in this embodiment can be found in the first aspect of the embodiment, and will not be repeated here.

[0116] The fifth aspect of this embodiment provides a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method for monitoring the inflow of water into a reservoir power station as described in the first aspect of this embodiment. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0117] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for monitoring the inflow of water into a reservoir power station, characterized in that, include: Acquire flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross section at the upstream observation station of the target river and the flow velocity data of the river cross section at the downstream observation station of the target river, wherein the target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river; Based on the flow velocity data, the average flow velocity of the river section at the upstream observation station and the average flow velocity of the river section at the downstream observation station are determined. Obtain the area of ​​the river cross-section at the upstream observation station and the area of ​​the river cross-section at the downstream observation station; An upstream flow calculation model is constructed based on the average flow velocity and the area of ​​the river cross-section at the upstream observation station; and a downstream flow calculation model is constructed based on the average flow velocity and the area of ​​the river cross-section at the downstream observation station. Based on the upstream flow calculation model and the downstream flow calculation model, the inflow of water into the reservoir is calculated. Based on the average flow velocity and the area of ​​the river cross-section at the upstream observation station, an upstream flow calculation model is constructed, including: Obtain the coefficient between the average flow velocity and the flow velocity at the river cross-section; Based on the coefficient between the average flow velocity and the cross-sectional flow velocity of the river, the average flow velocity of the river at the upstream observation station, and the area of ​​the river cross-section at the upstream observation station, the upstream flow calculation model is constructed according to the following formula: θ = V × K × F, where θ represents the upstream flow of the target river, V represents the average flow velocity of the river section at the upstream observation station, F represents the area of ​​the river section at the upstream observation station, and K represents the coefficient between the average flow velocity and the flow velocity of the river section. The river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points. The multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section. The coefficient between the average flow velocity and the flow velocity at the river cross-section is obtained, including: Obtain water level data corresponding to any cross-sectional detection point and water level data corresponding to a calibration detection point, wherein the distance between the calibration detection point and the any cross-sectional detection point is a threshold, and the straight line connecting the any cross-sectional detection point and the calibration detection point is parallel to the direction of water flow. Obtain the horizontal distance between any cross-sectional detection point and the calibration detection point; The difference between the water level data at any cross-section detection point and the water level data at the calibrated detection point is calculated to obtain the water level difference; Based on the horizontal distance and the water level difference, the coefficient between the average flow velocity and the flow velocity of the river cross section is calculated.

2. The method according to claim 1, characterized in that, The river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points. The multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section. Accordingly, based on the flow velocity data, the average flow velocity of the river cross-section at the upstream observation station is determined, including: For the i-th set of cross-sectional detection data in several sets of cross-sectional detection data, based on the flow velocity of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, the average flow velocity between all two adjacent cross-sectional detection points in the i-th set of cross-sectional detection data is calculated, and multiple flow velocity values ​​are obtained. Calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data; When i is polled from 1 to n, n average flow velocity measurements are obtained, where n is the total number of sets of cross-sectional detection data; The average flow velocity at the upstream observation station is obtained by calculating the average of the n average flow velocity measurements.

3. The method according to claim 2, characterized in that, The distance between two adjacent cross-section detection points is 3 meters or 5 meters, and the total number of cross-section detection data sets is greater than or equal to 40.

4. The method according to claim 1, characterized in that, Based on the upstream flow calculation model and the downstream flow calculation model, the inflow of water into the reservoir is calculated, including: The water flow time is obtained, and based on the upstream flow calculation model and the water flow time, the upstream inflow of the target river during the water flow time is calculated. Based on the downstream flow calculation model and the water flow time, the downstream outflow of the target river during the water flow time is calculated. The difference between the upstream inflow and the downstream outflow is taken as the inflow of water into the reservoir during the water flow time.

5. A monitoring device for the inflow of water into a reservoir power station, characterized in that, The method for monitoring the inflow of water to a reservoir power station as described in any one of claims 1 to 4, wherein the apparatus comprises: The acquisition unit is used to acquire the flow velocity data of the target river, wherein the flow velocity data includes the flow velocity data of the river cross section at the upstream observation station of the target river and the flow velocity data of the river cross section at the downstream observation station of the target river, the target river is the river where the reservoir power station to be monitored is located, and the reservoir of the reservoir power station to be monitored is located in the middle reaches of the target river; The flow velocity calculation unit is used to determine the average flow velocity of the river cross section at the upstream observation station and the average flow velocity of the river cross section at the downstream observation station based on the flow velocity data. The acquisition unit is also used to acquire the area of ​​the river cross-section at the upstream observation station and the area of ​​the river cross-section at the downstream observation station; The model building unit is used to build an upstream flow calculation model based on the average flow velocity of the river cross section at the upstream observation station and the area of ​​the river cross section at the upstream observation station, and to build a downstream flow calculation model based on the average flow velocity of the river cross section at the downstream observation station and the area of ​​the river cross section at the downstream observation station. The water flow calculation unit is used to calculate the inflow of water into the reservoir based on the upstream flow calculation model and the downstream flow calculation model.

6. The apparatus according to claim 5, characterized in that, The river cross-sectional velocity data at the upstream observation station of the target river includes: several sets of cross-sectional detection data, wherein each set of cross-sectional detection data includes the velocity of multiple cross-sectional detection points. The multiple cross-sectional detection points are evenly distributed in the transverse direction of the river cross-section at the upstream observation station of the target river, and the transverse direction is perpendicular to the water flow direction of the river cross-section. The velocity calculation unit, for the i-th set of cross-sectional detection data in a plurality of sets of cross-sectional detection data, is used to calculate the average velocity between all two adjacent cross-sectional detection points in the i-th set of cross-sectional detection data based on the velocity of multiple cross-sectional detection points in the i-th set of cross-sectional detection data, and obtain multiple velocity values. The flow velocity calculation unit is used to calculate the average value among multiple flow velocity values ​​to obtain the average flow velocity measurement value of the i-th group of cross-sectional detection data. The flow velocity calculation unit is used to obtain n average flow velocity measurements when i is polled from 1 to n, where n is the total number of sets of cross-sectional detection data; The velocity calculation unit is also used to calculate the average of n average velocity measurements to obtain the average velocity of the river cross section at the upstream observation station.

7. An electronic device, characterized in that, include: A memory, a processor, and a transceiver are sequentially connected in communication, wherein the memory is used to store computer programs, the transceiver is used to send and receive messages, and the processor is used to read the computer programs and execute the method for monitoring the inflow of water to a reservoir power station as described in any one of claims 1 to 4.

8. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a computer, perform the method for monitoring the inflow of water into a reservoir power station as described in any one of claims 1 to 4.

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