Control method and device for overflow surface hole gate of hydropower station

Abstract

The invention provides a control method and device for an overflow surface hole gate of a hydropower station. The method comprises the steps that a first target parameter of the hydropower station is obtained; in response to the condition that the first target parameter meets the gate opening condition, the number of gates to be opened and the gate opening degree are determined according to the first target parameter; based on the number of the to-be-opened gates and the gate opening degree, a gate opening instruction is generated, and opening operation is executed on the to-be-opened gates according to the gate opening instruction; acquiring a second target parameter of the hydropower station after the starting operation is executed; when the target parameters of the hydropower station meet the gate opening condition and the gate closing condition, a gate closing instruction is generated in response to the fact that the second target parameters meet the gate closing condition, and closing operation is executed on the opened gate according to the gate closing instruction, and when the target parameters of the hydropower station meet the gate opening condition and the gate closing condition, opening and closing operation is automatically executed on the to-be-opened gate; the accuracy and timeliness of opening and closing control over the overflow surface hole gate are improved, and the cost of opening and closing control over the overflow surface hole gate is reduced.

Description

Technical Field

[0001] This application relates to the field of hydropower station technology, and in particular to a control method and device for a hydropower station overflow orifice gate. Background Technology

[0002] In related technologies, overflow orifices are currently often remotely controlled by existing measurement and control devices, which can only realize single-step lifting, stopping, and closing operations of the overflow orifice gate, as well as gate opening and closing operations in the gate opening mode, resulting in poor timeliness and accuracy in the overflow orifice gate control process. Summary of the Invention

[0003] The purpose of this application is to at least partially solve one of the technical problems in the aforementioned technologies.

[0004] The first aspect of this application provides a control method for overflow orifice gates of a hydropower station, comprising: acquiring a first target parameter of the hydropower station, wherein the first target parameter is a first upstream reservoir water level or a first turbine flow rate; responding to the first target parameter satisfying gate opening conditions, determining the number of gates to be opened and the gate opening degree according to the first target parameter; generating a gate opening command based on the number of gates to be opened and the gate opening degree, and performing an opening operation on the gates to be opened according to the gate opening command; acquiring a second target parameter of the hydropower station after performing the opening operation, wherein the second target parameter includes a second upstream reservoir water level, an inflow rate, and a second turbine flow rate; responding to the second target parameter satisfying gate closing conditions, generating a gate closing command, and performing a closing operation on the opened gates according to the gate closing command.

[0005] A second aspect of this application provides a control device for overflow orifice gates of a hydropower station, comprising: a first acquisition module for acquiring a first target parameter of the hydropower station, wherein the first target parameter is a first upstream reservoir water level or a first turbine flow rate; a determination module for determining, in response to the first target parameter satisfying gate opening conditions, the number of gates to be opened and the gate opening degree based on the first target parameter; a first control module for generating a gate opening command based on the number of gates to be opened and the gate opening degree, and performing an opening operation on the gates to be opened according to the gate opening command; a second acquisition module for acquiring a second target parameter of the hydropower station after the opening operation is performed, wherein the second target parameter includes a second upstream reservoir water level, an inflow rate, and a second turbine flow rate; and a second control module for generating a gate closing command in response to the second target parameter satisfying gate closing conditions, and performing a closing operation on the opened gates according to the gate closing command.

[0006] A third aspect of this application provides an electronic device, including: 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, the instructions being executed by the at least one processor to enable the at least one processor to perform the control method for the overflow orifice gate of a hydropower station provided in the first aspect of this application.

[0007] A fourth aspect of this application provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the control method for the overflow orifice gate of a hydropower station provided in the first aspect of this application.

[0008] The fifth aspect of this application provides a computer program product that, when executed by an instruction processor, performs the control method for the overflow orifice gate of a hydropower station provided in the first aspect of this application.

[0009] This application provides a control method for overflow orifice gates of a hydropower station. The method involves acquiring a first target parameter of the hydropower station, wherein the first target parameter is either a first upstream reservoir water level or a first turbine flow rate. In response to the first target parameter satisfying the gate opening conditions, the method determines the number and opening degree of gates to be opened based on the first target parameter. Based on the number and opening degree of the gates to be opened, a gate opening command is generated. According to the gate opening command, the gates to be opened are opened. After the opening operation is performed, a second target parameter of the hydropower station is acquired, wherein the second target parameter includes a second upstream reservoir water level, ... The inflow rate and the second flow rate through the pump, in response to the second target parameter meeting the gate closing condition, generate a gate closing command. Based on the gate closing command, the already opened gate is closed. Thus, this application automatically opens the gate to be opened when the first target parameter of the hydropower station meets the gate opening condition, and automatically closes the gate to be opened when the second target parameter of the hydropower station meets the gate closing condition. This improves the accuracy and timeliness of the control of the opening and closing of the overflow orifice gate, reduces the cost of the control of the opening and closing of the overflow orifice gate, and helps to ensure the safety of the dam.

[0010] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0012] Figure 1 This is a flowchart illustrating a control method for an overflow orifice gate of a hydropower station according to an embodiment of this application.

[0013] Figure 2 This is a flowchart illustrating a control method for an overflow orifice gate of a hydropower station according to another embodiment of this application.

[0014] Figure 3 This is a schematic diagram of the water level-flow rate relationship curve when the orifice is partially open, according to an embodiment of this application.

[0015] Figure 4 This is a schematic diagram of the water level-flow rate relationship curve of a fully open orifice according to an embodiment of this application;

[0016] Figure 5 This is a schematic diagram of a hydroelectric power station overflow orifice gate according to another embodiment of this application;

[0017] Figure 6 This is a schematic diagram of the structure of a control device for an overflow meter gate of a hydropower station according to an embodiment of this application;

[0018] Figure 7 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0020] The following description, with reference to the accompanying drawings, describes a control method, apparatus, electronic device, and medium for a hydropower station overflow orifice gate according to an embodiment of this application.

[0021] Figure 1 This is a flowchart illustrating a control method for an overflow orifice gate of a hydropower station according to an embodiment of this application. Figure 1 As shown, the method includes:

[0022] S101, Obtain the first target parameter of the hydropower station, wherein the first target parameter is the first upstream reservoir water level or the first flow rate of the generator.

[0023] It should be noted that this application does not limit the specific method for obtaining the first target parameters of the hydropower station, and the method can be selected according to the actual situation.

[0024] Optionally, the water level of the first upstream reservoir of the hydropower station can be obtained through a water level sensor.

[0025] Optionally, the first flow rate of the hydropower station can be obtained by using a flow meter.

[0026] S102, in response to the first target parameter satisfying the gate opening condition, determine the number of gates to be opened and the gate opening degree according to the first target parameter.

[0027] It should be noted that the flood discharge reservoir water level threshold and ecological flow threshold can be obtained. The water level of the first upstream reservoir and the flood discharge reservoir water level threshold can be compared to determine whether the gate opening conditions are met. The first flow rate through the pump can be compared with the ecological flow threshold to determine whether the gate opening conditions are met.

[0028] Among them, the flood discharge reservoir water level threshold and the ecological flow threshold can be set in advance.

[0029] In this embodiment of the application, the gate opening condition is determined to be met in response to the first upstream reservoir water level being greater than the flood discharge reservoir water level threshold, or in response to the first flow rate being less than the ecological flow threshold.

[0030] In this embodiment of the application, once it is determined that the gate opening conditions are met, the number of gates to be opened and the gate opening degree can be determined based on the first target parameter.

[0031] Optionally, the discharge flow demand can be obtained based on the first target parameter, and the number of gates to be opened can be determined based on the discharge flow demand and the maximum discharge flow of the overflow orifice gate.

[0032] Optionally, a pre-built model of the relationship between gate opening and discharge flow can be obtained, and the gate opening of the gate to be opened can be determined based on the first target parameter and the model.

[0033] S103: Based on the number of gates to be opened and the gate opening degree, generate a gate opening command, and perform an opening operation on the gates to be opened according to the gate opening command.

[0034] Optionally, after obtaining the number of gates to be opened and the gate opening degree, the operator can verify the number of gates to be opened and the gate opening degree. If the verification is correct, the operator can click "Gate Opening Command" to generate a gate opening command.

[0035] In this embodiment of the application, after generating the gate opening command, the gate to be opened is opened according to the gate opening command.

[0036] Optionally, during the opening operation of the gate to be opened, abnormal monitoring can be performed to ensure the safety of the hydropower station. If the actual opening of any two gates exceeds ±1 meter, all operating gates will be stopped. If the lubricating water flow of the overflow orifice gate is normal within 30 seconds, the process will continue to execute the opening operation. If the lubricating water flow of the overflow orifice gate is interrupted within 30 seconds, a gate stop command will be issued.

[0037] S104, obtain the second target parameters of the hydropower station after the start-up operation is performed, wherein the second target parameters include the second upstream reservoir water level, the inflow rate, and the second turbine flow rate.

[0038] In this embodiment of the application, after the gate to be opened is opened according to the gate opening command, the second target parameters of the hydropower station after the opening operation is performed are obtained. The second target parameters include the second upstream reservoir water level, the inflow rate, and the second flow rate of the pump.

[0039] Optionally, the water level of the second upstream reservoir of the hydropower station can be obtained through a water level sensor.

[0040] Optionally, for the inflow, a water level-flow relationship curve can be established by measuring the flow rate at different water levels, and the inflow can be determined based on the water level-flow relationship curve.

[0041] Optionally, the second flow rate of the hydropower station can be obtained through a flow meter.

[0042] S105, in response to the second target parameter satisfying the gate closing condition, a gate closing command is generated, and a closing operation is performed on the opened gate according to the gate closing command.

[0043] In this embodiment of the application, the gate closure conditions are determined to be met in response to the second upstream reservoir water level being less than or equal to the flood discharge reservoir water level threshold, the inflow being less than the average inflow, and the second flow rate being greater than or equal to the ecological flow threshold.

[0044] Optionally, operators can verify whether the second target parameter meets the gate closing conditions. If the verification is correct, they can click "Gate Closing Command" to generate a gate closing command.

[0045] In this embodiment of the application, after generating the gate closing command, the gate that has been opened is closed according to the gate closing command.

[0046] Optionally, during the closing operation of an already opened gate, abnormal monitoring can be performed. If the lubricating water flow rate of the overflow orifice gate is normal within 30 seconds, the process continues to perform the closing operation. If the lubricating water flow rate of the overflow orifice gate is interrupted within 30 seconds, a gate stop command is issued.

[0047] This application proposes a control method for overflow orifice gates of a hydropower station. The method involves acquiring a first target parameter of the hydropower station, wherein the first target parameter is either a first upstream reservoir water level or a first turbine flow rate. In response to the first target parameter satisfying the gate opening conditions, the method determines the number of gates to be opened and their opening degree based on the first target parameter. Based on the number of gates to be opened and their opening degree, a gate opening command is generated. According to the gate opening command, the gates to be opened are opened, and the method executes the opening operation. After the opening operation is executed, the method acquires a second target parameter of the hydropower station, wherein the second target parameter includes a second upstream reservoir water level, ... The inflow rate and the second flow rate through the pump, in response to the second target parameter meeting the gate closing condition, generate a gate closing command. Based on the gate closing command, the already opened gate is closed. Thus, this application automatically opens the gate to be opened when the first target parameter of the hydropower station meets the gate opening condition, and automatically closes the gate to be opened when the second target parameter of the hydropower station meets the gate closing condition. This improves the accuracy and timeliness of the control of the opening and closing of the overflow orifice gate, reduces the cost of the control of the opening and closing of the overflow orifice gate, and helps to ensure the safety of the dam.

[0048] Figure 2 This is a flowchart illustrating a control method for an overflow orifice gate of a hydropower station according to an embodiment of this application. Figure 2 As shown, the method includes:

[0049] S201, Obtain the first target parameter of the hydropower station, wherein the first target parameter is the first upstream reservoir water level or the first turbine flow rate.

[0050] S202, in response to the first target parameter satisfying the gate opening condition.

[0051] S203, determine the number of gates to be opened based on the first target parameter.

[0052] S204, Obtain the pre-built model of the relationship between gate opening and discharge flow.

[0053] For example, such as Figure 3 As shown, if the first target parameter is the first upstream reservoir water level, the overflow orifice partial opening water level-flow relationship curves can be obtained, including the single-orifice discharge curves at 1 / 4 gate opening, 3 / 4 gate opening, and 1 / 2 gate opening. Figure 4 As shown, the discharge curves of the test value and the design value of the gate with the gate fully open were obtained. Based on the above curves, namely the relationship between the upstream reservoir water level and the downstream flow under different gate openings, multinomial regression modeling in machine learning was used to obtain the model between the gate opening and the downstream flow.

[0054] Optionally, if the target parameter of the first sample is x, and the sample discharge flow is y, for the upstream reservoir water level of the first sample, the difference between the upstream reservoir water level and the flood discharge reservoir water level threshold is obtained, and the sample difference is used as the sample discharge flow. For the mechanical flow of the first sample, the difference between the ecological flow threshold and the mechanical flow of the first sample is obtained, and the sample difference is used as the discharge flow. The target parameter x of the first sample is then normalized to obtain... The sample discharge flow rate was then normalized to obtain... The expression for the model relating gate opening and discharge flow is: z = (1 + e t ) -1 Where t is a polynomial in m and n:

[0055] t = 626.7867m 3 -1406.4825m 2 n+1698.5025m 2 -1210.5185n 3 -1133.6137m 2 +1266.4241mn-176.711

[0056] 2n 2 +746.9801m-492.0199n-152.1211

[0057] It should be noted that after obtaining the pre-built model of the relationship between gate opening and discharge flow, the model can be verified to ensure its accuracy.

[0058] S205, Based on the first target parameters and the model, determine the gate opening degree of the gate to be opened.

[0059] It should be noted that after obtaining the first target parameter, the discharge flow can be obtained. The first target parameter and the discharge flow are normalized. The result after normalization is substituted into the polynomial t, and t is substituted into the model between the gate opening and the discharge flow to obtain the gate opening to be opened.

[0060] Optionally, after obtaining the gate opening degree of the gate to be opened, a gate opening degree difference threshold can be obtained. The gate opening degree difference threshold can be set to 1m, and the gate opening degree of any two gates to be opened should be less than the gate opening degree difference threshold.

[0061] S206: Based on the number of gates to be opened and the gate opening degree, generate a gate opening command, and perform an opening operation on the gates to be opened according to the gate opening command.

[0062] In this embodiment of the application, a pre-set gate opening priority and gate opening interval are obtained. Based on the gate opening priority, the opening sequence of the gates to be opened is determined. The gates to be opened are opened according to the opening sequence, gate opening degree and gate opening interval.

[0063] For example, such as Figure 5 As shown, for hydropower station A, hydropower station A is equipped with 5 overflow meter gates. In order to ensure the smooth discharge of water from the spillway and to avoid lateral scouring of water flow when the gates are partially opened and to reduce the scouring of the pre-excavated scour pit, the 5 gates are required to open "synchronously and uniformly". The gate opening priority from high to low can be: 3# meter gate > 2# meter gate > 4# meter gate > 5# meter gate > 1# meter gate, or 3# meter gate > 2# meter gate and 4# meter gate > 5# meter gate and 1# meter gate. Among them, 2# meter gate and 4# meter gate open at the same time, and 5# meter gate and 1# meter gate open at the same time.

[0064] It should be noted that, in order to prevent the oil pump motor from overloading and tripping due to excessive starting current caused by the simultaneous opening of multiple overflow gauges, the gate opening interval can be set to 30 seconds.

[0065] In this embodiment of the application, it is determined whether the gate to be opened meets the preset conditions. In response to the gate to be opened meeting the preset conditions, the gate to be opened is opened according to the opening sequence, gate opening degree and gate opening interval.

[0066] Optionally, the preset conditions for the gate to be opened can be that the remote control mode of the hydraulic hoist gate corresponding to the gate to be opened is normal, the oil pump, operating power supply, oil pressure and oil level of the hydraulic hoist are normal, and the programmable logic controller (PLC) system of the hydraulic hoist is operating normally.

[0067] S207, Obtain the second target parameters of the hydropower station after the start-up operation is performed. The second target parameters include the second upstream reservoir water level, the inflow rate, and the second turbine flow rate.

[0068] S208, in response to the second target parameter satisfying the gate closing condition, perform a closing operation on the opened gate.

[0069] In this embodiment of the application, the gate closure conditions are determined to be met in response to the second upstream reservoir water level being less than or equal to the flood discharge reservoir water level threshold, the inflow being less than the average inflow, and the second flow rate being greater than or equal to the ecological flow threshold.

[0070] In this embodiment of the application, the gate closing priority and gate closing interval corresponding to the gate opening priority are obtained. Based on the gate closing priority, the closing order of the opened gates is determined. The closing operation is performed on the opened gates according to the closing order and the gate closing interval.

[0071] The opening sequence of the gates to be opened is the reverse of the closing sequence of the gates that have already been opened.

[0072] For example, if the gate opening priority is 3# meter hole > 2# meter hole > 4# meter hole > 5# meter hole > 1# meter hole, then the gate closing priority is 1# meter hole > 5# meter hole > 4# meter hole > 2# meter hole > 3# meter hole. If the gate opening priority is 3# meter hole > 2# meter hole and 4# meter hole > 5# meter hole and 1# meter hole, then the gate closing priority is 5# meter hole and 1# meter hole > 2# meter hole and 4# meter hole > 3# meter hole.

[0073] It should be noted that this application does not limit the setting of the gate closing interval. Optionally, the gate closing interval can be set to 30 seconds.

[0074] Optionally, if the lubricating water flow rate of the overflow meter gate is normal within 30 seconds, the process continues to perform the closing operation; if the lubricating water flow rate of the overflow meter gate is effectively interrupted within 30 seconds, a stop gate command is issued.

[0075] This application proposes a control method for overflow orifice gates of a hydropower station. The method involves acquiring a first target parameter of the hydropower station, which is either a first upstream reservoir water level or a first turbine flow rate. In response to the first target parameter satisfying the gate opening condition, the method determines the number of gates to be opened based on the first target parameter, acquires a pre-constructed model relating gate opening degree to outflow, determines the gate opening degree of the gates to be opened based on the first target parameter and the model, generates a gate opening command based on the number of gates to be opened and their opening degrees, executes the opening operation on the gates to be opened according to the gate opening command, and acquires a second target parameter of the hydropower station after the opening operation, which includes a second upstream reservoir water level, inflow rate, and second turbine flow rate. When the second target parameter meets the gate closing condition, the already opened gate is closed. Therefore, compared with the traditional manual gate opening and closing method, this application can significantly reduce labor costs and improve the accuracy of downstream flow control. By judging whether the gate opening and closing conditions are met, the overflow orifice gate can be automatically controlled. There is no need for real-time monitoring of the target parameters of the hydropower station. The control operation can be performed in a timely manner according to the actual situation, making the opening and closing of the hydropower station's overflow orifice gate more accurate, timely and efficient. When the gate opening condition is met, the overflow orifice gate is automatically opened, ensuring dam safety and reducing the waste of upstream water flow while ensuring dam safety, thereby obtaining greater power generation benefits.

[0076] Figure 6 This is a schematic diagram of the structure of a control device for a hydropower station overflow orifice gate according to an embodiment of this application, as shown below. Figure 6 As shown, a control device 1000 for a hydropower station overflow orifice gate includes a first acquisition module 110, a determination module 120, a first control module 130, a second acquisition module 140, and a second control module 150, wherein:

[0077] The first acquisition module 110 is used to acquire the first target parameter of the hydropower station, wherein the first target parameter is the first upstream reservoir water level or the first turbine flow rate;

[0078] The determining module 120 is used to determine the number of gates to be opened and the gate opening degree according to the first target parameters in response to the first target parameters satisfying the gate opening conditions.

[0079] The first control module 130 is used to generate a gate opening command based on the number of gates to be opened and the gate opening degree, and to perform an opening operation on the gates to be opened according to the gate opening command.

[0080] The second acquisition module 140 is used to acquire the second target parameters of the hydropower station after the start-up operation is performed, wherein the second target parameters include the second upstream reservoir water level, the inflow rate, and the second turbine flow rate.

[0081] The second control module 150 is used to generate a gate closing command in response to the second target parameter satisfying the gate closing condition, and to perform a closing operation on the opened gate according to the gate closing command.

[0082] The second aspect of this application provides a control device for a hydropower station overflow orifice gate, which also has the following technical features. According to one embodiment of this application, a determining module 120 is used to: acquire a pre-constructed model between the gate opening degree and the discharge flow rate; and determine the gate opening degree of the gate to be opened based on the first target parameter and the model.

[0083] According to one embodiment of this application, a first control module 130 is configured to: obtain a pre-set gate opening priority and gate opening interval; determine the opening sequence of the gates to be opened according to the gate opening priority; and perform an opening operation on the gates to be opened according to the opening sequence, the gate opening degree, and the gate opening interval.

[0084] According to one embodiment of this application, before performing an opening operation on the gate to be opened according to the opening sequence, the gate opening degree, and the gate opening interval, the device 1000 is configured to: determine whether the gate to be opened meets preset conditions; and, in response to the gate to be opened meeting the preset conditions, perform an opening operation on the gate to be opened according to the opening sequence, the gate opening degree, and the gate opening interval.

[0085] According to one embodiment of this application, the device 1000 is used to: determine that the gate opening conditions are met in response to the first upstream reservoir water level being greater than the flood discharge reservoir water level threshold; or, determine that the gate opening conditions are met in response to the first flow rate being less than the ecological flow threshold.

[0086] According to one embodiment of this application, the device 1000 is used to: determine that the gate closure conditions are met in response to the second upstream reservoir water level being less than or equal to the flood discharge reservoir water level threshold, the inflow being less than the average inflow, and the second flow rate being greater than or equal to the ecological flow threshold.

[0087] According to one embodiment of this application, the second control module 150 is configured to: obtain a gate closing priority and a gate closing interval corresponding to the gate opening priority; determine the closing sequence of the opened gates according to the gate closing priority; and perform a closing operation on the opened gates according to the closing sequence and the gate closing interval.

[0088] This application proposes a control device for overflow orifice gates of a hydropower station. The device acquires a first target parameter of the hydropower station, wherein the first target parameter is a first upstream reservoir water level or a first turbine flow rate. In response to the first target parameter satisfying the gate opening condition, the device determines the number of gates to be opened and the gate opening degree based on the first target parameter. Based on the number of gates to be opened and the gate opening degree, a gate opening command is generated. According to the gate opening command, the device performs an opening operation on the gates to be opened. After the opening operation is performed, the device acquires a second target parameter of the hydropower station, wherein the second target parameter includes a second upstream reservoir water level, ... The inflow rate and the second flow rate through the pump, in response to the second target parameter meeting the gate closing condition, generate a gate closing command. Based on the gate closing command, the already opened gate is closed. Thus, this application automatically opens the gate to be opened when the first target parameter of the hydropower station meets the gate opening condition, and automatically closes the gate to be opened when the second target parameter of the hydropower station meets the gate closing condition. This improves the accuracy and timeliness of the control of the opening and closing of the overflow orifice gate, reduces the cost of the control of the opening and closing of the overflow orifice gate, and helps to ensure the safety of the dam.

[0089] To achieve the above embodiments, this application also provides an electronic device, a computer-readable storage medium, and a computer program product.

[0090] Figure 7 This is a block diagram of an electronic device according to an embodiment of this application, such as... Figure 7 As shown, device 2000 includes memory 210, processor 220, and a computer program stored in memory 210 and executable on processor 220. When processor 220 executes program instructions, it performs... Figures 1 to 2 An example of a control method for the overflow orifice gate of a hydropower station.

[0091] To implement the above embodiments, this application also provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute... Figures 1 to 2 An embodiment of the control method for the overflow orifice gate of a hydropower station.

[0092] To implement the above embodiments, this application also provides a computer program product that, when the instruction processor in the computer program product is executed, performs... Figures 1 to 2 An embodiment of the control method for the overflow orifice gate of a hydropower station.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0096] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0097] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0098] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0099] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0100] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A control method for an overflow orifice gate in a hydropower station, characterized in that, The method includes: Obtain the first target parameter of the hydropower station, wherein the first target parameter is the first upstream reservoir water level or the first turbine flow rate; In response to the first target parameter satisfying the gate opening condition, the number of gates to be opened and the gate opening degree are determined according to the first target parameter; Based on the number of gates to be opened and the gate opening degree, a gate opening command is generated, and the gates to be opened are opened according to the gate opening command. After the start-up operation is performed, the second target parameters of the hydropower station are obtained, including the second upstream reservoir water level, the inflow rate, and the second turbine flow rate. In response to the second target parameter satisfying the gate closing condition, a gate closing command is generated, and a closing operation is performed on the opened gate according to the gate closing command.

2. The method according to claim 1, characterized in that, Determining the gate opening degree based on the first target parameter includes: Obtain a pre-built model relating the gate opening to the discharge flow rate; Based on the first target parameter and the model, the gate opening degree of the gate to be opened is determined.

3. The method according to claim 1, characterized in that, The step of performing an opening operation on the gate to be opened according to the gate opening command includes: Obtain the pre-set gate opening priority and gate opening interval; The opening sequence of the gates to be opened is determined according to the gate opening priority. The gate to be opened is opened in accordance with the opening sequence, the gate opening degree, and the gate opening interval.

4. The method according to claim 3, characterized in that, Before performing the opening operation on the gate to be opened according to the opening sequence, the gate opening degree, and the gate opening interval, the method further includes: Determine whether the gate to be opened meets the preset conditions; In response to the gate to be opened meeting the preset conditions, the gate to be opened is opened according to the opening sequence, the gate opening degree and the gate opening interval.

5. The method according to claim 1, characterized in that, The method further includes: In response to the upstream reservoir water level being greater than the flood discharge reservoir water level threshold, it is determined that the gate opening conditions are met; or, In response to the first flow rate being less than the ecological flow threshold, it is determined that the gate opening condition is met.

6. The method according to claim 1, characterized in that, The method further includes: In response to the second upstream reservoir water level being less than or equal to the flood discharge reservoir water level threshold, the inflow being less than the average inflow, and the second flow rate being greater than or equal to the ecological flow threshold, it is determined that the gate closure conditions are met.

7. The method according to claim 1, characterized in that, The step of performing a closing operation on an opened gate according to the gate closing command includes: Obtain the gate closing priority and gate closing interval corresponding to the gate opening priority; The closing sequence of the opened gates is determined according to the gate closing priority; The closed gates are closed according to the closing sequence and the gate closing interval.

8. A control device for an overflow orifice gate of a hydropower station, characterized in that, The device includes: The first acquisition module is used to acquire the first target parameter of the hydropower station, wherein the first target parameter is the first upstream reservoir water level or the first turbine flow rate; The determination module is used to determine the number of gates to be opened and the gate opening degree based on the first target parameters in response to the first target parameters satisfying the gate opening conditions. The first control module is used to generate a gate opening command based on the number of gates to be opened and the gate opening degree, and to perform an opening operation on the gates to be opened according to the gate opening command. The second acquisition module is used to acquire the second target parameters of the hydropower station after the start-up operation is performed. The second target parameters include the second upstream reservoir water level, the inflow rate, and the second turbine flow rate. The second control module is used to generate a gate closing command in response to the second target parameter satisfying the gate closing condition, and to perform a closing operation on the opened gate according to the gate closing command.

9. An electronic device, characterized in that, Including processor and memory; The processor reads executable program code stored in the memory to run a program corresponding to the executable program code, so as to implement the method as described in any one of claims 1-8.

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