A method, device and equipment for calculating flow in uncontrolled interval of reservoir

Abstract

The present invention discloses a method, device and equipment for calculating the flow rate in an uncontrolled interval of a reservoir. The method determines the calculated outflow flow rate change information within the target period according to the measured inflow flow rate change information and the measured water level change information in front of the dam during the target period and the hydrodynamic model; and determines the change information of the flow rate in the uncontrolled interval within the target period according to the measured outflow flow rate change information and the calculated outflow flow rate change information during the target period. The method provided by the present invention can accurately calculate the change information of the unmonitored inflow flow rate over time in the process of counting the inflow flow rate of the reservoir, providing important technical support for the scientific dispatch and safe operation of large reservoirs.

Description

Technical Field

[0001] The present invention relates to the technical field of reservoir operation and control, and in particular to a method, device and equipment for calculating flow in an uncontrolled interval of a reservoir. Background Art

[0002] Since large reservoirs are often long, their inflows are generally composed of mainstream inflows, tributary inflows, and uncontrolled interval flows (rainfall and other flows that are not easy to monitor accurately). With the development of hydrological monitoring technology, mainstream inflows and tributary inflows can be obtained more accurately, but there is no more accurate direct monitoring technology for uncontrolled interval flows. Existing considerations of uncontrolled interval flows are often based on the operational management experience of technical personnel, which often differ greatly from the actual situation. Since the acquisition of uncontrolled interval flows is not accurate enough, it is impossible to provide accurate data support for reservoir operation and management, resulting in insufficient precision in water level scheduling and control, making it difficult to meet the actual needs of refined scheduling. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the acquisition results of the existing non-controlled interval flow data are not accurate enough, thereby providing a method, device and equipment for calculating the non-controlled interval flow of a reservoir.

[0004] In the first aspect, an embodiment of the present invention discloses a method for calculating the flow rate in an uncontrolled interval of a reservoir, the method comprising: constructing a non-steady flow hydrodynamic model of the reservoir; obtaining the water level and flow rate along the reservoir within a target period and the measured outflow flow rate change information within the target period; using the water level and flow rate along the reservoir as initial calculation conditions, and using the measured water level information in front of the dam and the measured incoming flow rate information as calculation boundary conditions, inputting them into the non-steady flow hydrodynamic model to obtain the calculated outflow flow rate change information within the target period; determining the change information of the flow rate in the uncontrolled interval within the target period based on the measured outflow flow rate change information within the target period and the calculated outflow flow rate change information.

[0005] The method for calculating the flow rate in the uncontrolled interval of a reservoir provided by the present invention can accurately calculate the change information of the unmonitored inflow flow over time when counting the inflow flow of the reservoir, thereby solving the problem of inaccurate judgment of the flow rate in the uncontrolled interval in the prior art and providing important technical support for the scientific scheduling and safe operation of the reservoir.

[0006] In combination with the first aspect, in a possible implementation of the first aspect, the water level and flow along the reservoir within the target time period are obtained, including: constructing a steady-flow hydrodynamic model of the reservoir; obtaining the measured water level information in front of the dam and the measured inflow flow information within the target time period; inputting the measured inflow flow information and the measured water level information in front of the dam within the target time period into the steady-flow hydrodynamic model to obtain the water level and flow along the reservoir.

[0007] In combination with the first aspect, in a possible implementation of the first aspect, the change information of the flow in the non-controlled interval within the target time period is determined based on the measured outflow flow change information within the target time period and the calculated outflow flow change information, including: integrating the measured outflow flow change information and the calculated outflow flow change information within the target time period respectively to obtain the measured outflow flow integral and the calculated outflow flow integral; subtracting the measured outflow flow integral from the calculated outflow flow integral to obtain the integral difference; and derivatizing the integral difference to obtain the change information of the flow in the first non-controlled interval within the target time period.

[0008] The method provided in this embodiment can make the flow information of the non-controlled section more accurate.

[0009] In combination with the first aspect, in a possible implementation manner of the first aspect, before the integral difference is differentiated, the method further includes: correcting the change information of the flow rate in the first uncontrolled interval according to a preset smoothing parameter.

[0010] The method provided in this embodiment can make the change information of the flow rate in the uncontrolled interval more accurate and reasonable.

[0011] In combination with the first aspect, in a possible implementation of the first aspect, the method also includes: obtaining measured incoming flow change information within the target time period; inputting the change information of the flow in the first non-controlled interval, the measured incoming flow change information of the target time period, and the measured outflow flow change information into a non-steady flow hydrodynamic model to obtain a first corrected calculated dam front water level change information; comparing the first corrected calculated dam front water level change information within the target time period, the measured dam front water level change information of the target time period, and the calculated dam front water level change information of the target time period; and evaluating the accuracy of the change information of the flow in the first non-controlled interval based on the comparison results.

[0012] The method provided in this embodiment can make the calculated change information of the flow rate in the uncontrolled interval more credible by evaluating the accuracy of the change information of the flow rate in the first uncontrolled interval.

[0013] In combination with the first aspect, in a possible implementation of the first aspect, the method also includes: obtaining meteorological information of the area where the reservoir is located; determining the position information of the non-controlled interval flow on the main stream during the target period based on the meteorological information and the change information of the first non-controlled interval flow; inputting the position information of the non-controlled interval flow on the main stream during the target period and the change information of the first non-controlled interval flow into a non-constant flow hydrodynamic model to obtain the first outflow flow change information during the target period; inputting the water level change information along the reservoir and the change information of the first non-controlled interval flow into the non-constant flow hydrodynamic model to obtain the second outflow flow change information during the target period; comparing the first outflow flow change information with the second outflow flow change information; determining the time information of the first non-controlled interval flow propagating from the corresponding position to the front of the dam during the target period based on the comparison result; correcting the change information of the first non-controlled interval flow based on the time information to obtain the change information of the second non-controlled interval flow.

[0014] The method provided in this embodiment takes into account the meteorological conditions at the location of the reservoir, and can more clearly determine the location of the non-controlled interval flow; it takes into account the impact of the propagation time of the non-controlled interval flow on the non-controlled interval flow, making the determined change information of the non-controlled interval flow more accurate.

[0015] In combination with the first aspect, in a possible implementation of the first aspect, the method also includes: inputting the change information of the flow rate in the second uncontrolled interval, the measured incoming flow change information in the target time period, and the measured outgoing flow change information into a non-steady flow hydrodynamic model to obtain a second corrected calculated dam front water level change information; comparing the second corrected calculated dam front water level change information with the measured dam front water level change information in the target time period; and evaluating the accuracy of the second uncontrolled interval flow change information based on the comparison result.

[0016] The method provided in this embodiment can make the calculated change information of the non-controlled interval flow rate more credible by evaluating the accuracy of the change information of the second non-controlled interval flow rate.

[0017] In combination with the first aspect, in a possible implementation of the first aspect, before constructing the steady-flow hydrodynamic model and the non-steady-flow hydrodynamic model of the reservoir, the method also includes: obtaining relevant parameters of the reservoir, the relevant parameters including attribute information of the reservoir, historical inflow information, historical outflow information and historical water level information in front of the dam; and constructing the steady-flow hydrodynamic model and the non-steady-flow hydrodynamic model of the reservoir according to the relevant parameters of the reservoir.

[0018] In the second aspect, an embodiment of the present invention further discloses a device for calculating the flow rate in an uncontrolled interval of a reservoir, the device comprising: a construction module for constructing a unsteady flow hydrodynamic model of the reservoir; a first acquisition module for acquiring the water level and flow rate along the reservoir within a target period and the measured outflow flow rate change information within the target period; a first determination module for taking the water level and flow rate along the reservoir as initial calculation conditions, and taking the measured water level information in front of the dam and the measured incoming flow rate information as calculation boundary conditions, and inputting them into the unsteady flow hydrodynamic model to obtain the calculated outflow flow rate change information within the target period; a second determination module for determining the change information of the flow rate in the uncontrolled interval within the target period based on the measured outflow flow rate change information within the target period and the calculated outflow flow rate change information.

[0019] In the third aspect, an embodiment of the present invention further discloses an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the method for calculating the flow rate in an uncontrolled interval of a reservoir as described in the first aspect or any optional embodiment of the first aspect.

[0020] According to the fourth aspect, an embodiment of the present invention further discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for calculating the flow rate in an uncontrolled interval of a reservoir as described in the first aspect or any optional embodiment of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a flowchart of a specific example of a method for calculating flow in an uncontrolled interval of a reservoir in an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of a specific example of a method for calculating flow in an uncontrolled interval of a reservoir in an embodiment of the present invention;

[0024] Figure 3 It is a graph showing the variation of the measured water level in front of the dam and the calculated water level in front of the dam over time in the method for calculating the flow in the uncontrolled interval of the reservoir in the embodiment of the present invention;

[0025] Figure 4It is a relationship diagram of the first modified calculated dam front water level of the reservoir uncontrolled interval flow calculation method in the embodiment of the present invention, the measured dam front water level in the target period, and the calculated dam front water level in the target period changing with time;

[0026] Figure 5 A graph showing the change of the second modified calculated dam front water level and the actually measured dam front water level over time in the method for calculating the flow rate in the uncontrolled interval of the reservoir in an embodiment of the present invention;

[0027] Figure 6 It is a principle block diagram of a specific example of a reservoir non-controlled interval flow calculation device in an embodiment of the present invention;

[0028] Figure 7 FIG. 4 is a specific example diagram of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] As described in the background technology, accurate identification of non-controlled interval flow can provide support for safe scheduling and operation of reservoirs. In reservoirs, there is no relatively accurate direct monitoring technology for non-controlled interval flow. Existing considerations of non-controlled interval flow are often determined based on the operational management experience of technical personnel, which often differ greatly from the actual situation. In view of this, an embodiment of the present invention provides a method for calculating the non-controlled interval flow of a reservoir. Based on the reservoir dynamic calculation model, the outflow flow is calculated according to the actual measured inflow flow and the water level in front of the dam, and the outflow flow is compared with the measured outflow flow to determine the non-controlled interval flow. The non-controlled interval flow obtained by this scheme will be more accurate, and on the premise of meeting the accuracy requirements, it will be more in line with the actual situation and physical laws.

[0033] The embodiment of the present invention discloses a method for calculating the flow rate in an uncontrolled interval of a reservoir, which can be applied to an uncontrolled interval flow rate calculation terminal or a processor, and the calculation terminal or processor can be connected to a relevant database of the reservoir or a flow and water level monitoring terminal for communication, so as to obtain relevant data such as the incoming flow rate, the measured flow rate and the water level in front of the dam of the reservoir, such as Figure 1 As shown, the method comprises the following steps:

[0034] Step 101, constructing a non-steady flow hydrodynamic model of a reservoir.

[0035] Exemplarily, the hydrodynamic model can be a finite difference method to solve the Saint-Venant equations and the one-dimensional convection-diffusion equation, which can be used for hydrodynamic and water quality simulation of a single river channel or a complex river network, can handle steady flow and non-steady flow, and provides boundary types such as water level, flow, water level-flow relationship, free outflow, sluice, weir, etc.; interval inflow or point source sewage discharge can be considered; the role of sluice, weir, water pump and its dispatching process can be simulated; the calculation results such as water level and flow of the monitoring section can be output in real time; cold start or hot start can be performed; and the model output method can be customized. In the implementation of this application, the steady flow hydrodynamic model of the reservoir can solve the relationship between water level, flow, and water level-flow under steady flow conditions, and the non-steady flow hydrodynamic model of the reservoir can solve the relationship between water level, flow, and water level-flow under non-steady flow conditions.

[0036] As an optional embodiment of the present invention, before constructing the unsteady flow hydrodynamic model of the reservoir, the method further includes:

[0037] Relevant parameters of the reservoir are obtained, wherein the relevant parameters include attribute information of the reservoir, historical inflow flow information, historical outflow flow information, and historical water level information in front of the dam.

[0038] Exemplarily, the attribute information of the reservoir may include but is not limited to the scope of the reservoir, topographic section data, information on the main tributaries and secondary tributaries of the reservoir, water level regulation information in front of the dam, etc. In the embodiment of the present application, the relevant parameters of the reservoir are obtained. The reservoir area range is from the dam front to the reservoir tail, and the total length of the reservoir is 756,900m; it is determined that the reservoir includes 2 main tributaries and 11 secondary tributaries; the water level regulation range in front of the dam, the normal water storage level is 175m, and the minimum drawdown level is 145m; specifically, the main stream of the reservoir from 2015 to 2022, the topographic section data of each tributary, the measured inflow flow (main stream inflow flow, tributary inflow flow), the measured water level in front of the dam, the measured outflow flow (unit outflow flow) and other data can be collected.

[0039] A non-steady flow hydrodynamic model of the reservoir is constructed according to relevant parameters of the reservoir.

[0040] For example, in the embodiment of the present application, a steady flow and non-steady flow hydrodynamic model applicable to the reservoir is established according to the relevant parameters of the reservoir. The model framework can be as follows: Figure 2 shown. Figure 2 Middle: ① is the boundary of the reservoir tail, ⑥ is the boundary in front of the dam, ⑦ and ⑨ are the boundaries of the starting points of the main tributaries. is the intersection of the main stream and its tributaries. 1, 2, and 3 are the main streams, and 4 and 5 are the main tributaries. [1], [2], and [3] are reservoirs, whose storage capacity is simplified and merged from the water level-storage capacity relationship of the 11 secondary tributaries; their locations are determined based on the locations of the intersections of the 11 secondary tributaries and the main stream, and are located in the reservoir area, transitional reservoir area, and lake-type reservoir area, respectively. The hollow arrows are the inflows of the 11 secondary tributaries. The connection line between the reservoir and the main stream is a virtual canal, and its impact on the storage capacity is negligible.

[0041] Step 102, obtaining the water level and flow rate along the reservoir within the target period and the measured outflow flow change information within the target period.

[0042] As an optional implementation of the present invention, step 102 includes: constructing a steady-flow hydrodynamic model of the reservoir; obtaining the measured water level information in front of the dam and the measured inflow flow information within a target period; inputting the measured inflow flow information and the measured water level information in front of the dam within the target period into the steady-flow hydrodynamic model to obtain the water level and flow along the reservoir.

[0043] Exemplarily, the target period may be any historical period, and the embodiment of the present application does not limit the specific content of the target period, and those skilled in the art may determine it according to needs. In the embodiment of the present application, the target period may be a historical period in which there is an uncontrolled interval flow, and the uncontrolled interval flow is used to characterize the unmonitored incoming flow; in order to determine the specific content of the target period, the calculated dam front water level change information within the preset historical period may be determined based on the measured incoming flow change information, the measured outflow flow change information, the constant flow hydrodynamic model, and the unconstant flow hydrodynamic model within the preset historical period, and then the target period corresponding to the uncontrolled interval flow may be determined based on the measured dam front water level information and the calculated dam front water level information within the preset historical period. The preset historical period can be a period when the measured water level information in front of the dam is significantly different from the calculated water level information in front of the dam. More than 1,400 hours of a flood process in 2020 can be obtained. The measured water level information in front of the dam in this period is highly correlated with the calculated water level in front of the dam. It is speculated that this is due to the large difference between the artificially estimated non-controlled interval flow and the actual flow. The time series data of the measured water level in front of the dam, the measured outflow flow (based on the unit outflow flow) and the measured inflow flow (including the main stream inflow flow and the inflow flow of each tributary) during the flood process are screened out. The measured inflow flow information and the measured outflow flow change information within the preset historical period are input into Figure 2In the constant flow hydrodynamic model framework shown, the mainstream inflow flow is substituted into ① the reservoir tail boundary, the unit outflow flow is substituted into ⑥ the dam front boundary, the main tributary flow is substituted into ⑦ and ⑨ the main tributary starting point boundaries respectively, and the 11 secondary tributary flows are substituted in sequence. The water level along the reservoir within the preset historical period is calculated; the water level along the reservoir within the preset historical period is input into the non-constant flow hydrodynamic model to obtain the calculated dam front water level change information within the preset historical period; according to the measured dam front water level change information and the calculated dam front water level information within the preset historical period, the target time period corresponding to the non-controlled interval flow is determined; the non-controlled interval flow may include but is not limited to the inflow flow that cannot be accurately monitored such as rainfall. In the embodiment of the present application, the measured dam front water level change information and the calculated dam front water level information within the preset historical period can be plotted to determine the target time period corresponding to the non-controlled interval flow; the measured dam front water level and the calculated dam front water level change over time can be plotted as shown below Figure 3 As shown in the figure, the measured water level in each period is significantly different from the calculated water level in front of the dam, indicating that there is an uncontrolled interval flow in this period, and it is necessary to analyze the change process of the uncontrolled interval flow in this period. In the embodiment of the present application, the measured inflow and the measured water level change information in front of the dam at the initial moment of the target period can be input as follows Figure 2 In the steady flow hydrodynamic model framework shown in the figure, the main stream flow is substituted into the reservoir tail boundary ①, the measured water level in front of the dam is substituted into the dam front boundary ⑥, the main tributary flow is substituted into the starting point boundary of the main tributary ⑦ and ⑨, and the flow of the 11 secondary tributaries is substituted into The water level along the reservoir during the target period is calculated.

[0044] Step 103, taking the water level and flow along the reservoir as initial calculation conditions, taking the measured water level information in front of the dam and the measured incoming flow information as calculation boundary conditions, inputting them into the non-steady flow hydrodynamic model to obtain the calculated outflow flow change information within the target time period.

[0045] Exemplarily, in an embodiment of the present application, the water level and flow along the reservoir during the target period, the measured water level process in front of the dam, and the measured incoming flow process are input into the non-steady flow hydrodynamic model, and the calculated flow change information within the target period can be obtained; for the convenience of calculation and comparison, the data interval of the calculated flow change process over time can be set to 1h or 2h.

[0046] Step 104: Determine the flow change information of the non-controlled section within the target time period according to the measured flow change information within the target time period and the calculated flow change information.

[0047] Exemplarily, in an embodiment of the present application, the measured outflow flow rate and the calculated outflow flow rate at the same time in the target time period can be compared numerically, and the difference between the measured outflow flow rate and the calculated outflow flow rate at multiple times in the target time period can be calculated. Based on the difference at multiple times, the change information of the flow in the non-controlled interval in the target time period can be determined.

[0048] The method for calculating the flow rate in the uncontrolled interval of a reservoir provided by the present invention can accurately calculate the change information of the incoming flow rate that was not monitored when counting the incoming flow rate of the reservoir over time, thereby solving the problem of inaccurate judgment of the flow rate in the uncontrolled interval in the prior art and providing important technical support for the scientific scheduling and safe operation of the reservoir.

[0049] As an optional implementation of the present invention, step 104 includes:

[0050] The measured outflow flow rate change information and the calculated outflow flow rate change information within the target time period are respectively integrated to obtain the measured outflow flow rate integral and the calculated outflow flow rate integral.

[0051] Exemplarily, a mathematical area integral calculation is performed over time on the measured outflow flow rate within the target time period to obtain the measured outflow flow integral, and a mathematical area integral calculation is performed over time on the calculated outflow flow rate within the target time period to obtain the calculated outflow flow integral.

[0052] The measured outflow flow integral is subtracted from the calculated outflow flow integral to obtain an integral difference; the integral difference is derived to obtain change information of the flow in the first non-controlled interval within the target time period.

[0053] Exemplarily, in an embodiment of the present application, the measured outflow flow integral and the calculated outflow flow integral of the target time period can be subtracted to obtain the integral difference, and the integral difference can be differentiated to obtain the change information of the flow in the first non-controlled interval during the target time period.

[0054] As an optional implementation of the present invention, step 104 further includes:

[0055] The change information of the flow rate in the first non-controlled interval is corrected according to a preset smoothing parameter.

[0056] Exemplarily, the preset smoothing parameter can be any smoothing parameter. The embodiment of the present application does not limit the specific content of the preset smoothing parameter, as long as the smooth correction of the integral difference can be reasonably achieved; by correcting the change in the flow rate in the first uncontrolled interval, the influence of the water level measurement accuracy in front of the dam can be reduced, so that the change information of the flow rate in the uncontrolled interval is more accurate and reasonable.

[0057] As an optional implementation of the present invention, step 104 further includes:

[0058] Obtain the measured inflow flow change information within the target time period; input the change information of the flow in the first non-controlled interval, the measured inflow flow change information during the target time period, and the measured outflow flow change information into the non-steady flow hydrodynamic model to obtain the first corrected calculated dam-front water level change information; compare the first corrected calculated dam-front water level change information during the target time period, the measured dam-front water level change information during the target time period, and the calculated dam-front water level change information during the target time period; and evaluate the accuracy of the change information of the flow in the first non-controlled interval based on the comparison result.

[0059] Exemplarily, in an embodiment of the present application, the measured inflow flow change information, the measured outflow flow change information, and the change information of the first non-controlled interval flow in the target time period are used as boundary conditions, wherein the non-controlled interval flow is set at the section position in front of the dam, and the water level along the reservoir is used as the initial condition, and is substituted into the non-steady flow hydrodynamic model to obtain the initial corrected calculated in-dam water level change information (first corrected calculated in-dam water level change information); the first corrected calculated in-dam water level change information is compared with the measured in-dam water level in the target time period, and the initial correction effect of the non-controlled interval flow can be determined based on the comparison result; in order to facilitate comparison, a graph of the change relationship between the first corrected calculated in-dam water level, the measured in-dam water level in the target time period, and the calculated in-dam water level in the target time period and time can be drawn, and the change relationship graph can be shown as follows: Figure 4 As shown in the figure, the difference between the measured water level in front of the dam and the first corrected calculated water level in front of the dam (initial corrected calculated water level in front of the dam) is small (the maximum water level difference is 0.19m, less than 0.3m), indicating that the calculation result of the flow value in the non-controlled interval is better.

[0060] As an optional implementation of the present invention, step 104 further includes:

[0061] Obtain meteorological information of the area where the reservoir is located; determine the position information of the non-controlled interval flow on the mainstream during the target period based on the meteorological information and the change information of the first non-controlled interval flow.

[0062] For example, since the flow in the uncontrolled interval generally occurs in the rainfall area, combined with the meteorological conditions of the area where the reservoir is located, the location information of the flow in the uncontrolled interval on the mainstream is determined, that is, the confluence point / confluence area.

[0063] The position information of the non-controlled interval flow on the main stream during the target period and the change information of the first non-controlled interval flow are input into the non-steady flow hydrodynamic model to obtain the change information of the first outflow flow during the target period.

[0064] Exemplarily, by inputting the position information of the non-controlled interval flow on the mainstream during the target period and the change information of the first non-controlled interval flow into the non-steady flow hydrodynamic model, the first outflow flow change information during the target period can be determined. The first outflow flow change information is the outflow flow change information determined by taking into account the position of the non-controlled interval flow on the mainstream.

[0065] The water level change information along the reservoir and the flow change information in the first uncontrolled interval are input into the unsteady flow hydrodynamic model to obtain the second outflow flow change information within the target time period.

[0066] Exemplarily, the second outflow flow rate change information is outflow flow rate change information determined without considering the position of the non-controlled interval flow on the main stream.

[0067] The first outflow flow change information and the second outflow flow change information are compared; and the time information of the first non-controlled interval flow propagating from the corresponding position to the front of the dam within the target time period is determined according to the comparison result.

[0068] Exemplarily, the first outflow flow change information and the second outflow flow change information are compared, and the time required for the first uncontrolled interval flow to propagate from its position on the main stream to the front of the dam can be determined based on the comparison result; in this embodiment of the present application, the time required for the first uncontrolled interval flow to propagate to the front of the dam is 24 hours.

[0069] The change information of the flow rate in the first non-controlled interval is corrected according to the time information to obtain the change information of the flow rate in the second non-controlled interval.

[0070] Exemplarily, in an embodiment of the present application, the change relationship of the first uncontrolled interval flow over time can be delayed according to the time information of the first uncontrolled interval flow propagating from the corresponding position to the front of the dam, thereby realizing the correction operation of the change information of the first uncontrolled interval flow; specifically, if the time for the first uncontrolled interval flow to propagate to the front of the dam is 24 hours, then the change information of the first uncontrolled interval flow is delayed by 24 hours, thereby obtaining the change information of the second uncontrolled interval flow.

[0071] As an optional implementation of the present invention, step 104 further includes:

[0072] Input the flow change information of the second uncontrolled interval, the measured inflow flow change information of the target time period and the measured outflow flow change information into the non-steady flow hydrodynamic model to obtain the second corrected calculated water level change information in front of the dam; compare the second corrected calculated water level change information in front of the dam with the measured water level change information in front of the dam during the target time period; and evaluate the accuracy of the flow change information of the second uncontrolled interval based on the comparison result.

[0073] Exemplarily, in the embodiment of the present application, the flow change information of the second non-controlled interval, the measured inflow flow change information within the target period, and the measured outflow flow change information are input into the non-steady flow hydrodynamic model to obtain the second corrected calculated dam front water level change information; the second corrected calculated dam front water level change information is compared with the measured dam front water level change information. For the convenience of comparison, a graph of the second corrected calculated dam front water level and the measured dam front water level change over time can be drawn, which can be specifically as follows: Figure 5 As shown in the figure, the difference between the second corrected calculated dam front water level (corrected dam front water level) and the measured dam front water level is small (the maximum water level difference is 0.32m, less than 0.5m), indicating that the calculation result of the flow in the second non-controlled interval is relatively accurate.

[0074] The embodiment of the present invention also discloses a reservoir non-controlled interval flow calculation device, such as Figure 6 As shown, the device comprises:

[0075] The construction module 201 is used to construct a non-steady flow hydrodynamic model of a reservoir.

[0076] The first acquisition module 202 is used to obtain the water level and flow rate along the reservoir within the target period and the measured outflow flow rate change information within the target period.

[0077] The first determination module 203 is used to use the water level and flow along the reservoir as initial calculation conditions, and the measured water level information in front of the dam and the measured incoming flow information as calculation boundary conditions, and input them into the non-steady flow hydrodynamic model to obtain the calculated flow change information within the target time period.

[0078] The second determination module 204 is used to determine the change information of the flow rate in the non-controlled section within the target time period according to the measured change information of the outflow flow rate within the target time period and the calculated change information of the outflow flow rate.

[0079] The reservoir non-controlled interval flow calculation device provided by the present invention can accurately calculate the change information of the incoming flow rate that was not monitored when counting the incoming flow rate of the reservoir over time, thereby solving the problem of inaccurate judgment of the non-controlled interval flow in the prior art and providing important technical support for the scientific scheduling and safe operation of the reservoir.

[0080] As an optional embodiment of the present invention, the first acquisition module includes: a construction submodule for constructing a steady-flow hydrodynamic model of the reservoir; an acquisition submodule for acquiring the measured water level information before the dam and the measured inflow flow information within a target period; an input submodule for inputting the measured inflow flow information and the measured water level information before the dam within the target period into the steady-flow hydrodynamic model to obtain the water level and flow along the reservoir.

[0081] As an optional embodiment of the present invention, the third determination module includes: a first acquisition submodule, which is used to obtain the measured incoming flow rate change information within the target time period; a first processing submodule, which is used to integrate the measured outgoing flow rate change information and the calculated outgoing flow rate change information within the target time period, respectively, to obtain the measured outgoing flow rate integral and the calculated outgoing flow rate integral; a difference submodule, which is used to difference the measured outgoing flow rate integral and the calculated outgoing flow rate integral to obtain the integral difference; and a second processing submodule, which is used to process the measured outgoing flow rate integral and the calculated outgoing flow rate integral to obtain the change information of the non-controlled interval flow within the target time period.

[0082] As an optional implementation manner of the present invention, the third determining module further includes:

[0083] The first correction submodule is used to correct the flow change information of the first non-controlled interval according to a preset smoothing parameter.

[0084] As an optional implementation manner of the present invention, the third determining module further includes:

[0085] A first determination submodule is used to input the change information of the flow rate in the first non-controlled interval, the measured change information of the incoming flow rate in the target period, and the measured change information of the outgoing flow rate into a non-steady flow hydrodynamic model to obtain first corrected calculation of the change information of the water level in front of the dam;

[0086] A first comparison submodule is used to compare the first corrected calculated dam front water level change information of the target period, the measured dam front water level change information of the target period, and the calculated dam front water level change information of the target period;

[0087] The first evaluation submodule is used to evaluate the accuracy of the change information of the flow rate in the first non-controlled interval according to the comparison result.

[0088] As an optional implementation manner of the present invention, the third determining module further includes:

[0089] The second acquisition module is used to acquire meteorological information of the area where the reservoir is located;

[0090] A second determination submodule is used to determine the position information of the non-controlled interval flow on the mainstream during the target period according to the meteorological information and the change information of the first non-controlled interval flow;

[0091] The third determination submodule is used to input the position information of the non-controlled interval flow on the main stream during the target period and the change information of the first non-controlled interval flow into the non-steady flow hydrodynamic model to obtain the change information of the first outflow flow during the target period;

[0092] A fourth determination submodule is used to input the water level change information along the reservoir and the change information of the flow rate in the first uncontrolled interval into the unsteady flow hydrodynamic model to obtain the change information of the second outflow flow rate in the target period;

[0093] A second comparison submodule, used for comparing the first outflow flow rate change information and the second outflow flow rate change information;

[0094] A fifth determination submodule is used to determine the time information of the flow of the first uncontrolled interval propagating from the corresponding position to the front of the dam within the target period according to the comparison result;

[0095] The second correction submodule is used to correct the change information of the flow rate in the first non-controlled interval according to the time information to obtain the change information of the flow rate in the second non-controlled interval.

[0096] As an optional embodiment of the present invention, the device further includes:

[0097] A sixth determination submodule is used to input the change information of the flow rate in the second non-controlled interval, the measured inflow flow rate change information in the target period, and the measured outflow flow rate change information into a non-steady flow hydrodynamic model to obtain a second corrected calculation of the dam front water level change information;

[0098] A third comparison submodule is used to compare the second corrected calculated dam front water level change information with the actually measured dam front water level change information during the target period;

[0099] The second evaluation submodule is used to evaluate the accuracy of the change information of the flow rate in the second non-controlled interval according to the comparison result.

[0100] As an optional embodiment of the present invention, the device further includes:

[0101] The second acquisition module is used to acquire relevant parameters of the reservoir, wherein the relevant parameters include attribute information of the reservoir, historical inflow flow information, historical outflow flow information, and historical water level information in front of the dam;

[0102] The construction module is used to construct a steady-flow hydrodynamic model and a non-steady-flow hydrodynamic model of the reservoir according to relevant parameters of the reservoir.

[0103] The embodiment of the present invention further provides an electronic device, such as Figure 7 As shown, the electronic device may include a processor 401 and a memory 402, wherein the processor 401 and the memory 402 may be connected via a bus or other means. Figure 7 The example of connecting through bus is taken in the following.

[0104] The processor 401 may be a central processing unit (CPU). The processor 401 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0105] The memory 402 is a non-transient computer-readable storage medium that can be used to store non-transient software programs, non-transient computer executable programs and modules, such as program instructions / modules corresponding to the reservoir non-controlled interval flow calculation method in the embodiment of the present invention. The processor 401 executes various functional applications and data processing of the processor by running the non-transient software programs, instructions and modules stored in the memory 402, that is, the reservoir non-controlled interval flow calculation method in the above method embodiment is implemented.

[0106] The memory 402 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created by the processor 401, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 402 may optionally include a memory remotely arranged relative to the processor 401, and these remote memories may be connected to the processor 401 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0107] The one or more modules are stored in the memory 402, and when executed by the processor 401, the following is performed: Figure 1 The method for calculating the flow rate in the uncontrolled interval of the reservoir in the illustrated embodiment.

[0108] For details of the above electronic equipment, please refer to Figure 1 The corresponding related descriptions and effects in the illustrated embodiments can be understood and will not be repeated here.

[0109] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in any computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0110] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for calculating flow in an uncontrolled interval of a reservoir, characterized in that: The method comprises: Constructing a non-steady flow hydrodynamic model of the reservoir, wherein the non-steady flow hydrodynamic model of the reservoir can solve the relationship between water level, flow rate, and water level-flow rate under non-steady flow conditions; Obtain the water level and flow along the reservoir within the target period and the measured outflow flow change information within the target period; The water level and flow along the reservoir are used as initial conditions for calculation, and the measured water level information in front of the dam and the measured inflow flow information are used as boundary conditions for calculation, and are input into the unsteady flow hydrodynamic model to obtain the calculated outflow flow change information within the target period; Determine the change information of the flow rate in the non-controlled section within the target time period according to the measured flow rate change information within the target time period and the calculated flow rate change information; Determining the change information of the flow rate in the non-controlled section within the target time period according to the measured flow rate change information within the target time period and the calculated flow rate change information includes: Integrating the measured outflow flow rate change information and the calculated outflow flow rate change information within the target time period respectively to obtain the measured outflow flow rate integral and the calculated outflow flow rate integral; Subtracting the measured outflow flow integral from the calculated outflow flow integral to obtain an integral difference; Derivative the integral difference to obtain change information of the flow rate in the first non-controlled interval within the target time period; The method further comprises: Obtain the measured incoming flow information within the target period; Inputting the flow change information of the first uncontrolled interval, the measured inflow flow information within the target period, and the measured outflow flow change information into the unsteady flow hydrodynamic model to obtain the first corrected calculation of the dam front water level change information; Comparing the first corrected calculated dam front water level change information of the target period, the measured dam front water level information of the target period, and the calculated dam front water level change information of the target period; Evaluating the accuracy of the change information of the flow rate in the first non-controlled interval according to the comparison result; The method further comprises: Obtaining meteorological information of the area where the reservoir is located; Determine the location information of the non-controlled interval flow on the mainstream during the target period according to the meteorological information and the change information of the first non-controlled interval flow; Inputting the position information of the non-controlled interval flow on the main stream during the target period and the change information of the first non-controlled interval flow into the unsteady flow hydrodynamic model to obtain the change information of the first outflow flow during the target period; Inputting the water level information along the reservoir and the change information of the flow rate in the first uncontrolled interval into the unsteady flow hydrodynamic model to obtain the change information of the second outflow flow rate in the target period; Comparing the first outflow flow rate change information with the second outflow flow rate change information; Determine the time information of the flow in the first uncontrolled interval propagating from the corresponding position to the front of the dam within the target period according to the comparison result; Correcting the change information of the flow rate in the first non-controlled interval according to the time information to obtain the change information of the flow rate in the second non-controlled interval; The method further comprises: Inputting the flow change information of the second uncontrolled interval, the measured inflow flow change information within the target period, and the measured outflow flow change information into the unsteady flow hydrodynamic model to obtain the second corrected calculation of the dam front water level change information; comparing the second corrected calculated dam front water level change information with the actually measured dam front water level information during the target period; The accuracy of the change information of the flow rate in the second non-controlled interval is evaluated based on the comparison result.

2. The method according to claim 1, characterized in that Obtain the water level and flow along the reservoir within the target period, including: Construct a steady-flow hydrodynamic model of the reservoir; Obtain the measured water level information in front of the dam and the measured inflow flow information within the target period; The measured inflow flow information and the measured water level information in front of the dam during the target period are input into the steady flow hydrodynamic model to obtain the water level and flow along the reservoir.

3. The method according to claim 1, characterized in that After derivatizing the integral difference, the method further includes: The change information of the flow rate in the first non-controlled interval is corrected according to a preset smoothing parameter.

4. The method according to claim 1, characterized in that Before constructing the unsteady flow hydrodynamic model of the reservoir, the method further comprises: Acquire relevant parameters of the reservoir, wherein the relevant parameters include attribute information of the reservoir, historical inflow flow information, historical outflow flow information, and historical water level information in front of the dam; A non-steady flow hydrodynamic model of the reservoir is constructed according to relevant parameters of the reservoir.

5. A reservoir uncontrolled interval flow calculation device, characterized in that: The device is used to execute the reservoir uncontrolled interval flow calculation method according to claim 1, and comprises: Construction module for constructing the unsteady flow hydrodynamic model of the reservoir; The first acquisition module is used to obtain the water level and flow rate along the reservoir within the target period and the measured outflow flow change information within the target period; The first determination module is used to use the water level and flow along the reservoir as initial conditions for calculation, and the measured water level information in front of the dam and the measured inflow flow information as boundary conditions for calculation, and input them into the unsteady flow hydrodynamic model to obtain the calculated outflow flow change information within the target period; The second determination module is used to determine the change information of the flow in the non-controlled section within the target time period according to the measured flow change information within the target time period and the calculated flow change information.

6. An electronic device, characterized in that: include: at least one processor; And a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the reservoir uncontrolled interval flow calculation method as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for calculating the flow rate in an uncontrolled interval of a reservoir as described in any one of claims 1 to 4 is implemented.

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