Method and system suitable for quickly calculating daily regulation non-constant flow of hydropower station

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a method and a system suitable for quickly calculating daily regulation non-constant flow of a hydropower station, which adopt a unit step length inner loop iteration mode, are more comprehensive in considered factors, smaller in error and more stable when solving a partial differential equation, can effectively calculate flow of a longer distance, and improve the calculation accuracy of the daily regulation non-constant flow of the hydropower station. The characteristic of long-distance propagation of daily adjustment non-constant flow is met; iteration is carried out by setting error limitation, large-amplitude non-constant flow calculation is processed, the method does not depend on downstream boundary conditions, and the method has the advantage of low boundary condition dependence; through a step-by-step calculation and inspection method, positioning and debugging are carried out in time when calculation is inaccurate, so that the debugging process is more convenient, and compared with a traditional method, the method has higher flexibility and reliability; the method and the model have the advantages of being small in error, high in stability, low in dependence on boundary conditions, convenient to debug and the like in daily adjustment non-constant flow calculation, and effective technical support is provided for efficient dispatching of a hydropower station.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a method and a system suitable for quickly calculating a non-steady flow for daily regulation of a hydropower station. Background Art

[0002] As my country's hydropower industry gradually develops westward, the construction of hydropower stations has gradually entered the western mountainous areas and transformed into the construction of high-head hydropower stations against the background of high mountains and canyons. Typical examples include the four cascade hydropower stations in the lower reaches of the Jinsha River. The daily regulation of the non-constant flow of such hydropower stations has the characteristics of large amplitude, fast speed and long propagation distance. For example, the amplitude of the discharge flow of Xiangjiaba Hydropower Station in the dry season can reach about 2500m3 / s, which is 1 times the basic flow. The downstream water level change can reach 3.5m, 1.2 times the water depth of the channel maintenance, and the impact can reach Jiangjin, Chongqing, for about 400 km. The drastic fluctuation of water level and flow will bring a series of problems to shipping, riverside building safety, reservoir bank stability, etc., so the importance of studying large amplitude and long-distance daily regulation of non-constant flow is becoming increasingly prominent.

[0003] Since the daily regulation non-constant flow has the characteristics of large amplitude and long propagation distance, there is only a one-dimensional mathematical model that can quickly calculate the long-distance non-constant flow, and a more reliable and timely calculation mathematical model has not been formed. And because the conventional discrete method is still used: the convergence is calculated by giving the upstream boundary flow and the downstream boundary water level, and the boundary conditions of the daily regulation non-constant flow are variable, the research is usually subject to the uncontrollable water level downstream and can only study past cases, so it is impossible to form a mathematical model that can predict the downstream water level based on the upstream flow. At present, there are certain difficulties in the lower boundary value of the Xiangjiaba daily regulation non-constant flow, which is studied more. Due to the extremely long propagation distance, it is necessary to obtain a stable lower boundary value in Chongqing. Therefore, before calculating the daily regulation non-constant flow, the more reliable data usually only have the flow change of the upper boundary, but lack the water level data of the lower boundary, and cannot be calculated using traditional methods. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is: by utilizing the upper boundary conditions given in real time by the hydropower station, as well as basic data such as terrain, roughness, initial water level, etc., through a step-by-step convergence method, the evolution of the non-steady flow discharged from the hydropower station can be calculated and predicted without the need for lower boundary water level conditions.

[0006] To solve the above technical problems, the present invention provides the following technical solutions. A method for rapidly calculating the daily regulated unsteady flow of a hydropower station includes: writing in a first-class format to obtain a first-order equation; collecting and calculating initial conditions according to the first-order equation framework, and setting initial calculation data; inputting the data for calculation; and outputting the data to obtain the evolution process.

[0007] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the step of writing in a first-class format to obtain a first-order equation includes overwriting with a specific format, transforming the form, and obtaining the equation solution.

[0008] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the step of collecting and calculating initial conditions and setting initial calculation data includes preliminary data collection and analysis calculation of relevant areas to determine basic information.

[0009] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the step of inputting the data for calculation includes inputting the initial data into the calculation program, starting the calculation process, and performing numerical calculations using a predetermined model and algorithm.

[0010] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the step of outputting the data to obtain the evolution process includes outputting the data after the calculation is completed, generating the evolution process, displaying the change process within a specified time period, and performing further analysis and decision-making.

[0011] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the first-class format includes overwriting with a discrete format.

[0012] As a preferred embodiment of the method for rapidly calculating the daily regulated unsteady flow of a hydropower station according to the present invention, wherein: the first-order equation includes overwriting with a first-class format to obtain a one-dimensional unsteady flow equation.

[0013] Another object of the present invention is to provide a system suitable for quickly calculating the daily regulation unsteady flow of a hydropower station, including an equation construction module, a data preparation module, a calculation execution module, and a result output module. The equation construction module is responsible for writing in a specific format to obtain a first-level equation, and further overwriting the one-dimensional unsteady flow equation in a discrete format to provide a basic mathematical model for system calculation. The data preparation module collects and calculates the initial data of the relevant area according to the first-level equation framework, and sets the calculation initial data, including basic information such as flow rate, water level, and terrain. The calculation execution module inputs the initial data into the calculation program, starts the calculation process, and uses a predetermined model and algorithm to perform numerical calculations to obtain the results of the water flow evolution process of each cross-section. The result output module is responsible for outputting the hydraulic data of the entire river cross-section and displaying the flow rate, water level, and water level change during the evolution process, providing data support for subsequent hydropower station scheduling and decision-making.

[0014] To solve the above technical problems, the present invention provides the following technical solutions: A system suitable for quickly calculating the daily regulation unsteady flow of a hydropower station, including: an equation construction module, a data preparation module, a calculation execution module, and a result output module;

[0015] The equation construction module writes in a certain format to obtain a first-level equation;

[0016] The data preparation module collects and calculates the initial situation according to the first-level equation framework and sets the calculation initial data;

[0017] The calculation execution module inputs the data and performs calculations;

[0018] The result output module outputs the data and obtains the evolution process.

[0019] A computer device includes a memory and a processor. The memory stores a computer program. The processor, when executing the computer program, implements the steps of a method for quickly calculating the daily regulation unsteady flow of a hydropower station as described above.

[0020] A computer-readable storage medium stores a computer program thereon. The computer program, when executed by a processor, implements the steps of a method for quickly calculating the daily regulation unsteady flow of a hydropower station as described above.

[0021] The beneficial effect of the present invention: The calculation method in the present invention uses the method of inner-loop iteration with a unit step size, and more comprehensive factors are considered when solving partial differential equations. Compared with the traditional explicit difference format, the error is smaller and it is more stable. Therefore, the calculated distance can be longer, meeting the characteristics of long-distance propagation of the daily regulation unsteady flow.

[0022] The calculation method in the present invention abandons the linearization calculation method in the traditional implicit difference format, and adopts the method of setting error limits for iteration, so that the method is successfully applicable to the calculation of unsteady flow with large amplitude variations. Compared with the traditional implicit difference format, it can calculate larger amplitude flow rates, and does not require downstream boundary conditions for convergence, having the advantage of low requirements for boundary conditions.

[0023] Since the calculation method in the present invention adopts the method of step-by-step calculation and verification, it can immediately locate the corresponding step size and perform debugging when the calculation is inaccurate, having the characteristic of being more convenient for debugging compared with the traditional implicit difference format.

[0024] Generally speaking, the calculation method and model in the present invention are based on the characteristics of daily-regulated unsteady flow, combining the advantages and disadvantages of existing traditional methods, having beneficial effects such as small error, stability, low dependence on boundary conditions, and convenient debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a schematic flow chart of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention.

[0027] Figure 2 It is a technical roadmap of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention.

[0028] Figure 3 It is an upper boundary flow rate - water level relationship diagram of a mathematical model of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention.

[0029] Figure 4 It is a calculation and measured water level verification diagram of the Guanmuyan water level of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention.

[0030] Figure 5 It is a calculation and measured water level verification diagram of the Jiang'an water level of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention.

[0031] Figure 6 It is a calculation and measured water level verification diagram of the Zhutuo water level of a method for quickly calculating daily-regulated unsteady flow in a hydropower station provided by an embodiment of the present invention. Detailed implementation manners

[0032] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Example 1, referring to Figure 1 , which is an embodiment of the present invention. This embodiment provides a method applicable to quickly calculating the daily regulation unsteady flow of a hydropower station, including:

[0034] S1: Write using a first-class format to obtain a first-level equation.

[0035] It should be noted that as shown in S1 of Figure 1 , writing using a first-class format to obtain a first-level equation includes overwriting using a specific format, transforming the form, and obtaining the equation solution.

[0036] Furthermore, the first-class format includes overwriting using a discrete format; the first-level equation includes overwriting using a first-class format to obtain a one-dimensional unsteady flow equation.

[0037] Even further, overwrite the one-dimensional unsteady flow equation in a discrete format;

[0038] The first-class format, that is, the discrete format, is specifically expressed as:

[0039] Transform the one-dimensional Saint-Venant equation into:

[0040]

[0041] When R = 0, the solution of the Saint-Venant equation is satisfied; where represents the section spacing, represents the time step, Q represents the flow rate, A represents the cross-sectional area, g represents the acceleration due to gravity, Z represents the water level, K represents the flow digital model, defined as where H represents the water depth and r represents the roughness coefficient;

[0042] For the variables in formulas (1) and (2), define them as f substitution, and transform to obtain:

[0043]

[0044] where j represents the distance step, n represents the time step, j + 1 and n + 1 respectively represent the next distance and time step;

[0045] The derivative is expressed as:

[0046]

[0047] The derivatives in formulas (1) and (2) obtained from formulas (5) and (6) are as follows:

[0048]

[0049]

[0050] where

[0051] The constant value A is obtained according to formulas (5) and (6), which is expressed as:

[0052]

[0053] Combining formulas (7)-(11), the difference form of formula (1) is expressed as:

[0054]

[0055] The difference form of formula (2) is expressed as:

[0056]

[0057] where the known terms in formulas (15) and (16) are: Δt, Δx; the unknown variables: the area at the (n + 1)-th moment of the (j + 1)-th section discharge modulus water level and discharge

[0058] When the topographic elevation of the section is known, as long as the water level z of a certain section is known, the area A and discharge modulus K of this section can be deduced.

[0059] In the embodiments of the present application, one type of format is to overwrite using a discrete format, specifically manifested as converting the one-dimensional Saint-Venant equation into a form suitable for numerical solution; by discretizing the equation, continuous time and space variables are discretized into step lengths and section spacings, thereby obtaining a one-dimensional unsteady flow equation applicable to the calculation of daily regulation unsteady flow in a hydropower station; further, the discrete format is specifically manifested as discretizing the variables (such as discharge, water level, cross-sectional area, etc.) in the equation to obtain a series of difference formulas, and then forming a numerical format suitable for calculation; in this process, the variables in formulas (1) and (2) are converted into proxy forms, and the representation method of the derivative also changes accordingly, making the calculation operable.

[0060] In an alternative embodiment, a certain type of format can also be implemented in other ways. Specifically, it is achieved by adopting a discretization process based on the finite difference method. The finite difference method discretizes the time and space variables of the equation into fixed time steps and spatial cross-sections respectively, and realizes efficient numerical approximation during the solution process. This method can dynamically adjust the step size and grid spacing according to the actual hydrological conditions, so as to obtain more accurate data on flow rate and water level changes. The finite difference method can flexibly handle different boundary conditions and basin characteristics, and also has good applicability to different types of hydropower stations within the basin.

[0061] In an alternative embodiment, a certain type of format can also be implemented in other ways. It can be achieved by introducing a transient flow model, which takes into account the time-varying characteristics of the flow, making the solution of the equation more in line with the actual flow state. By introducing the time factor, the calculation is not limited to instantaneous flow rate, but can also predict the dynamic changes during the entire flow process, and is applicable to calculations under unsteady flow conditions. When discretizing using the transient flow model, the time step can be further refined, and combined with numerical methods to accurately solve the changing parameters in the equation, which can provide accurate flow predictions, especially in areas with large water level fluctuations.

[0062] In the embodiment of the present application, the first-order equation is a one-dimensional unsteady flow equation, which is obtained by overwriting the one-dimensional Saint-Venant equation with a discrete format. Specifically, first, the one-dimensional Saint-Venant equation is transformed into a discrete format to meet the solution conditions of the Saint-Venant equation. The variables involved in the formula include cross-section spacing, time step, flow rate, cross-sectional area, water level, flow digital model, water depth, and roughness, etc. Through the conversion and calculation of these variables, the solution of the one-dimensional unsteady flow equation can be deduced. Different derivatives and constant values in the formula are obtained through specific mathematical derivations and applied to subsequent difference equations. Through formulas (7) to (11), this equation is expressed in difference form for calculating parameters such as flow rate and water level at each moment and each cross-section. The known terms include data such as cross-section terrain elevation, while the unknown terms include the area, flow modulus, water level, and flow rate at each cross-section moment. Given the water level condition of a certain cross-section, the corresponding area and flow modulus can be calculated through these equations. This method provides an effective mathematical basis for the unsteady flow evolution process of hydropower stations, enabling hydropower stations to more accurately predict downstream water level and flow rate changes during daily regulation, and thus optimizing management and scheduling.

[0063] In an alternative embodiment, the first-level equation can also be implemented in other ways, specifically by using a discretization method based on the finite volume method. The finite volume method divides the computational domain into small volume cells, calculates the changes in physical quantities inside each cell, and then solves for the flow rate and water level of each cell through boundary conditions and physical conservation laws. It can provide better computational stability when dealing with complex flows, especially suitable for non-uniform river basins or hydraulic conditions with highly variable characteristics. The finite volume method can effectively handle numerical oscillation problems that occur during the flow process, improving the accuracy and stability of the calculations.

[0064] In an alternative embodiment, the first-level equation can also be implemented in other ways, which is manifested by using a multi-grid method to solve the equation. The multi-grid method performs calculations on grids with different resolutions and combines the calculation results of coarse grids and fine grids to accelerate the solution process. First, a larger grid is used for a quick rough calculation, and then the results are gradually optimized by refining the grid until an accurate solution is finally obtained. It has significant advantages in solving large-scale hydropower station simulations, can effectively reduce the calculation time, and at the same time ensure a high calculation accuracy.

[0065] Embodiment 2, referring to Figure 1 - Figure 2 , is an embodiment of the present invention. This embodiment provides a method for quickly calculating the daily regulation unsteady flow of a hydropower station, including:

[0066] S2: According to the first-level equation framework, collect and calculate the initial situation, and set the initial calculation data.

[0067] It should be noted that, as shown in S2 in Figure 1 , collecting and calculating the initial situation, that is, collecting and calculating the initial situation of the river channel. Setting the initial calculation data includes preliminary data collection, analysis and calculation of the relevant area to determine the basic information.

[0068] Furthermore, as shown in Figure 2 , according to the river channel situation, define the calculation cross-sections, interpolate the terrain elevations of each cross-section based on the terrain data to determine the cross-section spacing and elevation distribution; set parameters such as the initial water level z 0 , roughness coefficient r, slope s, etc. Calculate the hydraulic element data of each cross-section according to the initial conditions: average water depth, river width B.

[0069] Even further, setting the initial calculation data includes: setting the time step setting the accuracy value R of the motion equation, setting the error limit value n, and setting the iterative correction value R z .

[0070] S3: Input the data and perform the calculation.

[0071] It should be noted that, asFigure 1 As shown in S3, input data, that is, input the downstream discharge process of the upstream hydropower station, and perform calculations including inputting initial data into the calculation program, starting the calculation process, and using a predetermined model and algorithm for numerical calculation.

[0072] Furthermore, as Figure 2 shown, the downstream discharge process of the upstream hydropower station needs to be provided according to the set time step, and the calculation logic is expressed as:

[0073] For sections j and j + 1, and times n and n + 1:

[0074] By assigning a value to the unknown water level and obtaining the unknown discharge through formula (15), obtain the corresponding area from the topographic data discharge modulus Substitute the parameters into formula (16) and set a corresponding limit value n (n → 0) for R;

[0075] If R < n is not satisfied, reassign the value to the unknown water level and perform iterative calculation again; when R < n, that is, when formula (16) is satisfied, output the corresponding result ( ) and enter the calculation of the next time step, and continue to loop according to the above logic;

[0076] After completing the iterative loop calculation for all time steps, the overall calculation is completed and the result is output;

[0077] Taking the discharge Q as an example, the processing method is expressed as:

[0078]

[0079] According to formula (17), the traditional discrete method ignores the term in linearization, but in the calculation of the daily regulation unsteady flow of hydropower stations, the discharge variation range can reach generally ±7000 m³ / s, and huge errors will be caused according to the traditional linearization solution method;

[0080] In the discrete method, use to replace the unknown water level where is known, and Δz j+1 represents the water level variation range of section j + 1 and represents the unknown;

[0081] When the condition R < n is satisfied but Δz j+1 obtains an incorrect value, set a limit value R z according to experience to j+1 re - correct Δz, and the limit value R zTake according to the specific empirical values of the actual river channel; using this limiting condition can avoid the errors caused by linearization and ensure the correctness of the calculation results;

[0082] For the flow rate and water level parameters of the j and j+1 sections at the known nth moment, and the flow rate and water level parameters of the j section at the (n+1)th moment, after assigning a value to the water level of the j+1 section at the (n+1)th moment, perform a verification calculation;

[0083] If the first type of equation (one-dimensional unsteady flow equation) in step S1 is satisfied, then proceed to the next calculation; if not, reassign values and perform the calculation.

[0084] S4: Output data to obtain the evolution process.

[0085] It should be noted that, as Figure 1 shown in S4, output data, that is, output the hydraulic data of the entire river channel section. Obtaining the evolution process includes the data output after the calculation is completed, generating the evolution process, that is, obtaining the daily regulation unsteady flow evolution process, showing the change process within the specified time period, and performing further analysis and decision-making.

[0086] Furthermore, as Figure 2 shown, in the steps of the loop S3 with a unit step size until the condition is satisfied, and then the next step size calculation can be performed. In this way, the calculation process is advanced until the entire daily regulation unsteady flow evolution process is completed.

[0087] Even further, the output hydraulic data of the entire river channel section includes the flow rate, water level, and water level change of each section.

[0088] The above is a schematic solution of an embodiment of a method for quickly calculating the daily regulation unsteady flow of a hydropower station. It should be noted that the technical solution of the system for a method for quickly calculating the daily regulation unsteady flow of a hydropower station belongs to the same concept as the above technical solution of a method for quickly calculating the daily regulation unsteady flow of a hydropower station. For the details not described in detail in the technical solution of an embodiment of a system for a method for quickly calculating the daily regulation unsteady flow of a hydropower station in this embodiment, reference can be made to the description of the technical solution of the above method for quickly calculating the daily regulation unsteady flow of a hydropower station.

[0089] Example 3, referring to Figure 3 - Figure 6 , an embodiment of the present invention provides a method for quickly calculating the daily regulation unsteady flow of a hydropower station. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0090] The calculated river reach is Yibin - Fuling. The object is the unsteady flow generated from Xiangjiaba from 2:00 on December 6, 2015 to 22:00 on December 12, 2015 for a total of 165 hours. The flow rate change at the initial section is 2485 - 4780 m³ / s, and the maximum amplitude of change is 2295 m³ / s; the water level change is 257.11 - 259.27 m, and the maximum amplitude of change is 2.16 m; the calculation time interval Δt is 1 hour.

[0091] First, establish a one - dimensional mathematical model according to the mathematical model creation method described in Embodiments S1 - S4.

[0092] Secondly, collect and calculate the initial situation of the river channel, and set the initial calculation data;

[0093] For example: Take Hejiangmen in Yibin as the initial section and Fuling as the end section, and delimit the section interval according to the specific terrain; perform interpolation elevation distribution on the terrain elevation of each section according to the section terrain data; set parameters such as the initial water level z 0 , roughness coefficient r, slope s, etc.; calculate the hydraulic element data of each section according to the initial conditions: average water depth, river width B; set the accuracy value R of the motion equation, set the error limit value n, and set the iterative correction value R z .

[0094] Then, input the downstream discharge process of the upstream hydropower station, as Figure 3 shown; start the calculation;

[0095] Finally, output the hydraulic data of the whole river channel section, and obtain the evolution process of the daily regulation unsteady flow;

[0096] For example: Take Guanmuyan at a mileage of 1007.6 km, Jiang'an at a mileage of 974.0 km, and Zhutuo at a mileage of 806.0 km as the verification sections. The comparison between the calculation results and the measured values is as Figure 4 , Figure 5 and Figure 6 shown. The average error of the three monitoring points is controlled within 0.05 m, and the evolution process of the daily regulation unsteady flow can be simulated more perfectly;

[0097] The total calculation time is about half an hour, which can meet the standard of rapid calculation.

[0098] Embodiment 4 is an embodiment of the present invention, which provides a system suitable for quickly calculating the daily regulation unsteady flow of a hydropower station, including: an equation construction module, a data preparation module, a calculation execution module, and a result output module;

[0099] The equation construction module writes in a certain format to obtain a first - order equation;

[0100] The data preparation module collects and calculates the initial situation according to the first-order equation framework and sets the initial calculation data.

[0101] The calculation execution module inputs data and performs calculations.

[0102] The result output module outputs data and obtains the evolution process.

[0103] This embodiment also provides a computing device applicable to a situation of a method for quickly calculating the daily regulation unsteady flow of a hydropower station, including:

[0104] A memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement a method for quickly calculating the daily regulation unsteady flow of a hydropower station as proposed in the above embodiment.

[0105] This embodiment also provides a storage medium on which a computer program is stored, and when the program is executed by a processor, it implements a method for quickly calculating the daily regulation unsteady flow of a hydropower station as proposed in the above embodiment.

[0106] The storage medium proposed in this embodiment and a method for quickly calculating the daily regulation unsteady flow of a hydropower station proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0107] If the above functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0108] Logic and / or steps described otherwise herein, for example, can be considered as a defined sequence of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, a system including a processor, or other systems that can fetch instructions from and execute the instructions of the instruction execution system, apparatus, or device. As used in this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

[0109] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following technologies well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0110] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A method for rapidly calculating the daily regulated unsteady flow of a hydropower station, characterized in that: Including: Using a certain format for writing to obtain a first-level equation; According to the first-level equation framework, collecting and calculating the initial situation, and setting the initial calculation data; Entering the data and performing calculations; Outputting the data and obtaining the evolution process.

2. A method for quickly calculating the daily regulated unsteady flow of a hydropower station according to claim 1, characterized in that: The step of using a certain format for writing to obtain a first-level equation includes overwriting with a specific format, transforming the form, and obtaining the equation solution.

3. A method for quickly calculating the daily-regulated unsteady flow of a hydropower station according to claim 2, characterized in that: The step of collecting and calculating the initial situation and setting the initial calculation data includes performing preliminary data collection and analysis calculation on the relevant area to determine the basic information.

4. A method for quickly calculating the daily regulated unsteady flow of a hydropower station according to claim 3, characterized in that: The step of entering the data and performing calculations includes inputting the initial data into the calculation program, starting the calculation process, and using a predetermined model and algorithm to perform numerical calculations.

5. A method for quickly calculating the daily regulated unsteady flow of a hydropower station as described in claim 4, characterized in that: The step of outputting the data and obtaining the evolution process includes outputting the data after the calculation is completed, generating the evolution process, showing the change process within a specified time period, and performing further analysis and decision-making.

6. A method for calculating the daily-regulated unsteady flow of a hydropower station applicable to rapid calculation, characterized in that: The certain format includes overwriting with a discrete format.

7. A method for calculating the daily regulated unsteady flow of a hydropower station applicable to rapid calculation, characterized in that: The first-level equation includes overwriting with a certain format to obtain a one-dimensional unsteady flow equation.

8. A system for rapidly calculating the daily regulated unsteady flow of a hydropower station according to any one of claims 1-7, characterized in that: Including: An equation construction module, a data preparation module, a calculation execution module, and a result output module; The equation construction module uses a certain format for writing to obtain a first-level equation; The data preparation module collects and calculates the initial situation and sets the initial calculation data according to the first-level equation framework; The calculation execution module enters the data and performs calculations; The result output module outputs the data and obtains the evolution process.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of a method for quickly calculating the daily regulation unsteady flow of a hydropower station according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of a method for quickly calculating the daily regulation unsteady flow of a hydropower station according to any one of claims 1 to 7.

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