Sand blocking and discharging facility setting judgment method based on analytic hierarchy process and related equipment
Through the method of setting and determining the sand blocking and discharging facilities based on hierarchical analysis, the setting and judgment of sand blocking and discharging facilities in pumped storage power stations is simplified, and the impact of sediment problem on the benefits of power stations and components is solved, and efficient discharging and discharging is achieved Sand facility setting decision.
Patent Information
- Application Number
- CN202410982221.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2024-12-17
AI Technical Summary
The sediment problems in pumped storage power plants lead to siltation of reservoir capacity, unit wear and filter blockage, affecting the efficiency of the power plant and the service life of components. It is difficult for the existing technology to effectively determine when to set up sand blocking and discharge facilities, and the calculation is complex and time-consuming.
Using the method of setting and determination of sand disconnection facilities based on hierarchical analysis, a hierarchical structure model is constructed, including the target layer, the criterion layer and the scheme layer. The factor weight value and scoring rules are determined through the scale method of 1 to 9 and its reciprocal number, and the comprehensive calculation is calculated. Score to decide whether to set up sand removal facilities.
The calculation process is simplified, the judgment accuracy is improved, the weight value can be adjusted according to the actual situation of different projects, and the application is strong, and it is effective in determining whether sand blocking and discharging facilities need to be set up, reducing losses.
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Figure CN119150396A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pumped storage power stations, and in particular to a method for determining the setting of sediment interception and drainage facilities based on a hierarchical analysis method and related equipment. Background Art
[0002] The water head of a pumped-storage power station is generally higher than that of a conventional hydropower station, and the sediment flow through the machine is bidirectional. The requirement for the sediment content passing through the machine is higher than that of a conventional hydropower station. Therefore, a pumped-storage power station is best built on a river with no or little sediment, and should try to avoid sites on rivers with high or medium sediment levels. When it is difficult to avoid, sufficient attention should be paid to the sediment problem and the sediment content entering the reservoir should be controlled.
[0003] The reservoir siltation problems of pumped storage power stations are mainly storage capacity loss, wear of unit flow components by sediment passing through the machine, reduced unit efficiency and filter clogging. It will directly affect the benefits of the power station and the service life of the pump, turbine and components. Storage capacity loss will reduce the effective storage capacity of the reservoir and affect the normal operation life of the power station. The abrasion of the pump and turbine will reduce the efficiency of the unit and shorten the overhaul cycle. It is necessary to set up silt-blocking and drainage facilities to reduce losses. However, it is difficult to determine when to set up silt-blocking and drainage facilities. The existing technology usually requires a large number of experimental tests to determine the setting of silt-blocking and drainage facilities, involving many parameters and a large amount of calculation and processing. Therefore, a simple and convenient method for determining the setting of silt-blocking and drainage facilities is urgently needed. Summary of the invention
[0004] In view of this, the purpose of this application is to propose a method for determining the setting of sand-blocking and drainage facilities based on hierarchical analysis method and related equipment to solve the above-mentioned technical problems.
[0005] In a first aspect of the present application, a method for determining the setting of sediment interception and drainage facilities based on the analytic hierarchy process is provided, comprising: constructing a hierarchical model for the setting of sediment interception and drainage facilities of a pumped-storage power station, the hierarchical model comprising a target layer, a criterion layer and a scheme layer, the target layer being the optimal scheme for the setting of sediment interception and drainage facilities, the criterion layer comprising factors of sediment particle size, sediment hardness, head and sediment content passing through the machine, anti-abrasion performance factors of unit materials and regulating reservoir capacity factors, the scheme layer comprising a scheme for setting up sediment interception and drainage facilities and a scheme for not setting up sediment interception and drainage facilities; refining the criterion layer, using a scaling method of 1 to 9 and its reciprocal to compare the relative importance of each factor in the criterion layer in pairs, constructing a judgment matrix, determining the weight value of each factor and performing a consistency check; determining a scoring rule for each factor, and calculating the score of each factor, and calculating a comprehensive score based on the score of each factor and the weight value; and determining the corresponding scheme of the scheme layer based on the comprehensive score.
[0006] Furthermore, the refinement of the criterion layer includes: the sediment particle size factor includes the median sediment particle size; the sediment hardness factor includes the proportion of sediment particles with a Mohs hardness greater than 5; the head and machine sediment content factors include the head and machine sediment content; the abrasion resistance factors of the unit material include material composition and quality grade, construction technology and environmental condition grade; the regulating reservoir capacity factor includes the effective reservoir capacity loss rate.
[0007] Furthermore, the scaling method of 1 to 9 and their reciprocals is defined as follows:
[0008] <![CDATA[Scale α ij > meaning 1 Indicates that the two factors are equally important 3 Indicates that one of the two factors is slightly more important than the other 5 Indicates that one of the two factors is significantly more important than the other 7 Indicates that one of the two factors is more important than the other 9 Indicates that one of the two factors is extremely more important than the other 2，4，6，8 The middle value of the above adjacent judgments reciprocal <![CDATA[If the j element is compared with the i element, the judgment value is α ji = 1 / α ij , α ii = 1]]> .
[0009] Furthermore, the judgment matrix A=(α ij ) m×m ; Determining the weight value of each factor includes: according to formula A w =λ max ω, find the maximum eigenvalue λ of the judgment matrix max The corresponding eigenvector ω is normalized to obtain the weight value of each factor; the consistency check includes: calculating the consistency ratio Among them, the consistency index RI is the random consistency index: when CR < 0.1, the consistency check is passed; otherwise, the judgment matrix should be adjusted.
[0010] Furthermore, the scoring rule for the sediment particle size factor is:
[0011]
[0012] The scoring rules for the sediment hardness factor are:
[0013]
[0014] The scoring rules for the water head and sediment content are as follows:
[0015]
[0016] The scoring rules for the anti-abrasion performance factor of the unit material are as follows:
[0017]
[0018] The scoring rule for adjusting the storage capacity factor is:
[0019]
[0020] Furthermore, the corresponding scheme of the scheme layer is determined as follows: when the comprehensive score is less than 60 points, it is determined that a sand interception and drainage facility scheme is to be set up; when the comprehensive score is greater than or equal to 60 points, it is determined that a sand interception and drainage facility scheme is not to be set up.
[0021] In a second aspect of the present application, a device for determining the setting of sand interception and drainage facilities based on the hierarchical analysis method is provided, comprising: a construction module, configured to construct a hierarchical model for the setting of sand interception and drainage facilities of a pumped storage power station, the hierarchical model comprising a target layer, a criterion layer and a scheme layer, the target layer being the optimal scheme for setting the sand interception and drainage facilities, the criterion layer comprising factors of sediment particle size, sediment hardness, head and sediment content passing through the machine, anti-abrasion performance factors of unit materials and regulating reservoir capacity factors, the scheme layer comprising a scheme for setting up sand interception and drainage facilities and a scheme for not setting up sand interception and drainage facilities; a matrix module, configured to refine the criterion layer, use a scaling method of 1 to 9 and its reciprocal to compare the relative importance of each factor in the criterion layer in pairs, construct a judgment matrix, determine the weight value of each factor and perform consistency check; a scoring module, configured to determine the scoring rules for each factor, calculate the score of each factor, and calculate the comprehensive score based on the score of each factor and the weight value; a result module, configured to determine the corresponding scheme of the scheme layer based on the comprehensive score.
[0022] The third aspect of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the setting of sand-retaining and drainage facilities based on the hierarchical analysis method as described in the first aspect above is implemented.
[0023] In a fourth aspect of the present application, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method for determining the setting of sand-retaining and drainage facilities based on the hierarchical analysis method as described in the first aspect above.
[0024] The fifth aspect of the present application provides a computer program product, including computer program instructions, characterized in that when the computer program instructions are run on a computer, the computer executes the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in the first aspect above.
[0025] From the above, it can be seen that the present application provides a method for determining the setting of sand interception and drainage facilities based on the hierarchical analysis method and related equipment, the method comprising: constructing a hierarchical model for the setting of sand interception and drainage facilities of a pumped storage power station, the hierarchical model comprising a target layer, a criterion layer and a scheme layer, the target layer being the optimal scheme for setting the sand interception and drainage facilities, the criterion layer comprising factors such as sediment particle size, sediment hardness, head and sediment content in the machine, anti-abrasion performance of the unit material and regulating reservoir capacity, the scheme layer comprising a scheme for setting up sand interception and drainage facilities and a scheme for not setting up sand interception and drainage facilities; refining the criterion layer, and using a scaling method of 1 to 9 and its reciprocal to rank the relative importance of each factor in the criterion layer The rows are compared pairwise, a judgment matrix is constructed, the weight value of each factor is determined and a consistency check is performed; the scoring rules for each factor are determined, and the score of each factor is calculated, and the comprehensive score is calculated according to the score of each factor and the weight value; the corresponding scheme of the scheme layer is determined according to the comprehensive score; only five parameters of the pumped storage power station can be used to determine whether it is necessary to set up sand interception and drainage facilities, which greatly simplifies the calculation process, and the judgment method has high accuracy after testing, and the weight value can be adjusted according to the actual situation of different projects, and it has good applicability; the sand interception and drainage facility setting judgment method based on the hierarchical analysis method and related equipment are simple and convenient, and can effectively determine whether it is necessary to set up sand interception and drainage facilities. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 A schematic diagram of a flow chart of a method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process in an embodiment of the present application;
[0028] Figure 2 It is a structural schematic diagram of a device for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method in an embodiment of the present application;
[0029] Figure 3 This is a schematic diagram of the structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION
[0030] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood by people with ordinary skills in the field to which the present application belongs. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
[0032] The water head of a pumped-storage power station is generally higher than that of a conventional hydropower station, and the sediment flow through the machine is bidirectional. The requirement for the sediment content passing through the machine is higher than that of a conventional hydropower station. Therefore, a pumped-storage power station is best built on a river with no or little sediment, and should try to avoid sites on rivers with high or medium sediment levels. When it is difficult to avoid, sufficient attention should be paid to the sediment problem and the sediment content entering the reservoir should be controlled.
[0033] The reservoir siltation problems of pumped storage power stations are mainly storage capacity loss, wear of unit flow components by sediment passing through the machine, reduced unit efficiency and filter clogging. It will directly affect the benefits of the power station and the service life of the pump, turbine and components. Storage capacity loss will reduce the effective storage capacity of the reservoir and affect the normal operation life of the power station. The abrasion of the pump and turbine will reduce the efficiency of the unit and shorten the overhaul cycle. It is necessary to set up silt-blocking and drainage facilities to reduce losses. However, it is difficult to determine when to set up silt-blocking and drainage facilities. The existing technology usually requires a large number of experimental tests to determine the setting of silt-blocking and drainage facilities, involving many parameters and a large amount of calculation and processing. Therefore, a simple and convenient method for determining the setting of silt-blocking and drainage facilities is urgently needed.
[0034] Below, through specific embodiments and combined Figures 1 to 3 To describe the technical solution of this application in detail.
[0035] Some embodiments of the present application provide a method for determining the setting of sand-blocking and drainage facilities based on a hierarchical analysis method, such as Figure 1 As shown, the following steps are included:
[0036] S1. Construct a hierarchical model for the setting of sediment interception and drainage facilities of a pumped storage power station, the hierarchical model includes a target layer, a criterion layer and a scheme layer. The target layer is the optimal scheme for setting up sediment interception and drainage facilities, the criterion layer includes factors such as sediment particle size, sediment hardness, head and sediment content passing through the machine, anti-abrasion performance of unit materials and regulating reservoir capacity, and the scheme layer includes schemes for setting up sediment interception and drainage facilities and schemes for not setting up sediment interception and drainage facilities.
[0037] Based on the AHP, a hierarchical structural model is established to organize the problem-solving ideas in an orderly manner, and a structural model consisting of a target layer, a criterion layer, and a solution layer is established. The target layer corresponds to the predetermined goal, which is called the highest layer; the criterion layer corresponds to the criteria and sub-criteria required to achieve the goal, which is the intermediate link, also called the middle layer; the solution layer corresponds to the optional measures and decision-making plans to achieve the decision-making goal, also called the lowest layer.
[0038] The optimal solution for setting up sand-blocking and drainage facilities was taken as the target layer, and the five main factors, including sediment particle size, sediment hardness, water head and sediment content passing through the machine, the anti-abrasion performance of the unit material, and the size of the regulating reservoir, were taken as the criterion layer. Scheme 1 (setting up sand-blocking and drainage facilities) and Scheme 2 (no sand-blocking and drainage facilities) were taken as the scheme layer to construct the structural model.
[0039] S2. Refine the criterion layer, use a scaling method of 1 to 9 and its reciprocal to compare the relative importance of each factor in the criterion layer, construct a judgment matrix, determine the weight value of each factor and perform consistency check.
[0040] The refinement of the criteria layer includes: A 1 : Sediment particle size. Considering that sediment in actual projects contains various particle sizes, the median particle size is used instead. 2 : Sediment hardness, determined by the proportion of sediment particles with a Mohs hardness greater than 5. Usually, it is estimated based on the mineral composition. 3 : Water head and sand content in the machine. 4 :The abrasion resistance of the unit materials, including material composition and quality grade, construction technology and environmental condition grade. 5 :Adjust the reservoir size, expressed as the effective reservoir capacity loss rate when siltation reaches equilibrium.
[0041] The scaling method of 1 to 9 and their reciprocals is defined as follows:
[0042] <![CDATA[Scale α ij > meaning 1 Indicates that the two factors are equally important 3 Indicates that one of the two factors is slightly more important than the other 5 Indicates that one of the two factors is significantly more important than the other 7 Indicates that one of the two factors is more important than the other 9 Indicates that one of the two factors is extremely more important than the other 2，4，6，8 The middle value of the above adjacent judgments reciprocal <![CDATA[If the j element is compared with the i element, the judgment value is α ji = 1 / α ij , α ii = 1]]> .
[0043] Perform hierarchical single sorting and consistency check, the judgment matrix A=(α ij ) m×m ; Determining the weight value of each factor includes: according to formula A w =λ max ω, find the maximum eigenvalue λ of the judgment matrix max The corresponding eigenvector ω is normalized to obtain the weight value of each factor; in order to verify the rationality of the weight distribution of each factor, the judgment matrix needs to be checked for consistency. The consistency check includes: calculating the consistency ratio Among them, the consistency index RI is the random consistency index, as shown in Table 1; when CR < 0.1, the consistency check is passed; otherwise, the judgment matrix should be adjusted.
[0044] Table 1 RI value table
[0045]
[0046] S3. Determine the scoring rules for each factor, calculate the score of each factor, and calculate the comprehensive score based on the score of each factor and the weight value.
[0047] The scoring rules for sediment particle size factors are as follows:
[0048]
[0049] The scoring rules for the sediment hardness factor are:
[0050]
[0051] The scoring rules for water head and sediment content are as follows:
[0052]
[0053] The scoring rules for the anti-abrasion performance factors of unit materials are as follows:
[0054]
[0055] Among them, for material composition and quality grade, grade 1 represents high hardness and good quality, grade 3 represents good quality, grade 5 represents average, grade 7 represents poor quality, and grade 9 represents bad quality; for construction technology and environmental conditions grade, grade 1 represents good laying technology and suitable temperature, grade 3 represents relatively suitable quality, grade 5 represents average, grade 7 represents poor quality, and grade 9 represents bad quality.
[0056] The scoring rules for adjusting storage capacity factors are:
[0057]
[0058] According to the scoring rules of each factor and the actual pumped storage power station parameters, the score of each factor can be calculated, and the comprehensive score can be calculated by multiplying the score of each factor and the weight value.
[0059] S4. Determine a corresponding solution of the solution layer according to the comprehensive score.
[0060] When the comprehensive score is greater than 80, it means that the possibility of wear and damage to the unit is small; when the comprehensive score is between 60 and 80 points, it means that the possibility of wear and damage to the unit is relatively small; when the comprehensive score is between 40 and 60 points, it means that the possibility of wear and damage to the unit is moderate; when the comprehensive score is less than 40 points, it means that the possibility of wear and damage to the unit is high.
[0061] Therefore, when the comprehensive score is greater than or equal to 60 points, it is considered that the hydrological conditions of the project are good and there is no need to set up sand interception and drainage facilities unless there are special circumstances; when the comprehensive score is less than 60 points, it is recommended to conduct numerical simulation calculations for further judgment.
[0062] This method for determining the setting of sediment-blocking and drainage facilities based on the hierarchical analysis method can determine whether sediment-blocking and drainage facilities need to be set up using only five parameters of pumped-storage power stations, greatly simplifying the calculation process. Tests have shown that the determination method has high accuracy and can adjust weight values according to actual conditions of different projects, making it highly applicable.
[0063] Comparative Example 1
[0064] Take the test of a pumped-storage power station in a certain place in the northwest as an example.
[0065] Sediment production in the basin: The basin has abundant precipitation, with an average annual precipitation of about 1,200 mm. Most of the annual precipitation is concentrated from May to September, and August is generally a summer drought period with less precipitation. The suspended sediment in the river mainly comes from the scouring of the surface soil in the basin, and the bedload comes from the collapse of the channel bank slope. The reservoir built above the lower reservoir dam site is basically full of sediment, and water plants have grown in some areas of the river in front of the dam. There is no obvious sediment deposition at the tail of the reservoir, and the sediment has basically reached a balance between scouring and silting. The reservoir has basically no interception effect on suspended sediment.
[0066] Sediment calculation at the upper and lower reservoir dam sites: In this stage, the monthly sediment content data of suspended sediment under natural conditions from 1963 to 2003 at the hydrological station after the power station was built were used to calculate the average sediment content of the upper reservoir dam site for many years to be 0.846 kg / m 3 The average annual sediment transport volume is 10,500 tons, and the sediment transport modulus is 552 tons / km. 2 ; The average sediment content at the lower reservoir dam site for many years is 0.848kg / m 3 The average annual sediment transport volume is 130,300 tons, and the sediment transport modulus is 554 tons / km. 2 Based on the estimate that bed load accounts for 20% of suspended load, the annual average bed load inflow to the upper and lower reservoir sites is 1,260 t and 156,400 t respectively.
[0067] Analysis of suspended sediment particle size distribution and mineral composition: During the main flood season from June to July 2020, a temporary sediment test was conducted at the river section of the lower reservoir dam site, and suspended sediment water samples were extracted 68 times, covering high, medium and low water conditions during the flood season. The measured sand content of the sand sample was 0.066kg / m 3 -4.86kg / m 3 Among the extracted sediment water samples, 8 water samples were selected for suspended sediment particle size distribution analysis, and the results are shown in Table 2.
[0068] Table 2 Measured suspended sediment particle size distribution
[0069]
[0070] The sand samples were sent to the testing and analysis center for mineral composition analysis. The analysis results are shown in Table 3.
[0071] Table 3 Analysis results of suspended sediment mineral composition in the river section at the dam site of the lower reservoir
[0072]
[0073] Calculation of the amount of sand and mud worn by the machine: Ksize is estimated to be 0.03, and Cn is 0.848kg / m 3 , Kshape is taken as 1.5, Khardness is estimated to be 0.57 based on the mineral composition, P is taken as 350MV, N=500r / min, the rated head is 583m, Km is taken as 1, RS=D=4.38, and the values of Kf and p are shown in Table 4.
[0074] Table 4 Kf and p value table
[0075]
[0076] Calculation of particle load PL:
[0077] PL=0.848*0.03*1.5*0.57*Ts=0.022*Ts.
[0078] Calculation of specific speed Ns:
[0079] n s =n*P 0.5 / H 1.25 ;Ns=500*3500000.5 / 5831.25=103.25.
[0080] Calculation of characteristic velocity:
[0081] W run =(0.25+0.003*n s )*(2*g*H) 0.5 ;
[0082] Wrun=(0.25+0.003*103.25)*(2*9.81*583)0.5=0.56*106.95=59.89m / s;
[0083] W gv =0.55*(2*g*H) 0.5 ;
[0084] Wgv=0.55*(2*9.81*583)0.5=58.82m / s.
[0085] Calculation of abrasion depth: S = W 3.4 *PL*K m *K f / RS p .
[0086] Table 5 Calculation results of each part
[0087] Location W PL Km <![CDATA[Kf(10 -6 )]]> p S Guide vanes 58.82 0.022*Ts 1 1.06 0.25 0.016*Ts Wear Plate 58.82 0.022*Ts 1 0.86 0.25 0.013*Ts Rotor import 58.82 0.022*Ts 1 0.9 0.25 0.014*Ts Rotor outlet 59.89 0.022*Ts 1 0.54 0.75 0.004*Ts Labyrinth seal 59.89 0.022*Ts 1 0.38 0.75 0.003*Ts
[0088] If the boundary condition is controlled so that the wear depth of the turbine blade outlet does not exceed 4 mm, it can be calculated that at this sediment concentration, Ts is 1000 h, that is, without engineering measures, the working hours are 1000 h.
[0089] By back-calculating the sediment content passing through the machine, S is controlled to 4 mm. According to the provisions of GB / T22581-2008 "Basic Technical Requirements for Mixed Flow Pump Turbines", TBO is selected as 8 years.
[0090] Then, W = 59.89; Km = 1; Kf (10-6) = 0.54; P = 0.75; PL = 3.24; through the calculation formula of PL, the sand content of the machine can be calculated as c = 0.0216 kg / m 3 The maximum head of the pumped storage power station is 625.79m. Compared with the limit values in Table 6, it can be seen that the sand content passing through the machine is lower than the wear limit, and there is no need to set up sand interception and drainage facilities.
[0091] Table 6 Quick Lookup Table of Maximum Head of Pump Turbine and Sediment Content in the Machine
[0092] Maximum lift 200-400 400-500 500-600 600-700 700-800 Sand content after machine 0.050 0.045 0.035 0.030 0.025
[0093] Example 1
[0094] According to the pumped storage power station structure model of comparative example 1, the judgment matrix is as follows:
[0095]
[0096] The scoring rules of each factor adopt the rules of the above embodiment. The sediment particle size d50 of the pumped storage power station is 0.03, the sediment hardness is 57%, the head is 583m, and the sediment content of the pumped storage power station is 0.0216kg / m 3 , material composition and quality grade are level 3, construction technology and environmental conditions grade are level 3, effective storage capacity loss rate is 12%, calculate the score of each factor and calculate the comprehensive score.
[0097] Comprehensive score
[0098] 73.583 is greater than 60 points. The possibility of wear and damage to the unit is at a relatively small level. Without special circumstances, it is possible to consider not installing sand-blocking and drainage facilities.
[0099] Example 1 and Comparative Example 1 can obtain comparable judgment results, but the example greatly simplifies the calculation process, does not require a large amount of measurement and simulation, and has better applicability.
[0100] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.
[0101] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.
[0102] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.
[0103] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation of the present disclosure. Other methods that meet relevant laws and regulations may also be applied to the implementation of the present disclosure.
[0104] In some embodiments of the present application, a device for determining the setting of sand-blocking and drainage facilities based on a hierarchical analysis method is provided, referring to Figure 2, including: a construction module 21, configured to construct a hierarchical model for the setting of sediment interception and drainage facilities of a pumped storage power station, the hierarchical model including a target layer, a criterion layer and a scheme layer, the target layer is the optimal scheme for setting sediment interception and drainage facilities, the criterion layer includes factors such as sediment particle size, sediment hardness, head and sediment content in the machine, anti-abrasion performance of unit materials and regulating reservoir capacity, and the scheme layer includes a scheme for setting sediment interception and drainage facilities and a scheme for not setting sediment interception and drainage facilities; a matrix module 22, configured to refine the criterion layer, use a scaling method of 1 to 9 and its reciprocal to compare the relative importance of each factor in the criterion layer in pairs, construct a judgment matrix, determine the weight value of each factor and perform consistency check; a scoring module 23, configured to determine the scoring rules for each factor, calculate the score of each factor, and calculate the comprehensive score according to the score of each factor and the weight value; a result module 24, configured to determine the corresponding scheme of the scheme layer according to the comprehensive score.
[0105] The device of the above embodiment is used to implement the corresponding method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.
[0106] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for determining the setting of sand-removing facilities based on the hierarchical analysis method described in any of the above embodiments is implemented.
[0107] Figure 3 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040 and a bus 1050. It is characterized in that the processor 1010, the memory 1020, the input / output interface 1030 and the communication interface 1040 realize communication connection with each other inside the device through the bus 1050.
[0108] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.
[0109] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.
[0110] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured as a component in the device (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. It is characterized in that the input device can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device can include a display, a speaker, a vibrator, an indicator light, etc.
[0111] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).
[0112] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).
[0113] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.
[0114] The electronic device of the above embodiment is used to implement the corresponding method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.
[0115] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method for determining the setting of sand-retaining and drainage facilities based on the hierarchical analysis method as described in any of the above embodiments.
[0116] The non-transitory computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of storage media for computers include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.
[0117] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.
[0118] Based on the same concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a computer program product, including computer program instructions. When the computer program instructions are run on a computer, the computer executes the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in any of the above embodiments, which has the beneficial effects of the corresponding method embodiments and will not be repeated here.
[0119] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.
[0120] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the device can be shown in the form of a block diagram, so as to avoid making the embodiments of the present application difficult to understand, and this also takes into account the following fact, that is, the details of the implementation method of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be completely within the scope of understanding of those skilled in the art). In the case of elaborating specific details to describe the exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.
[0121] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.
[0122] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.
Claims
1. A method for determining the setting of sediment interception and drainage facilities based on the analytic hierarchy process. It is characterized in that include: Construct a hierarchical model for the setting of sediment interception and drainage facilities of a pumped storage power station, the hierarchical model includes a target layer, a criterion layer and a scheme layer, the target layer is the optimal scheme for setting sediment interception and drainage facilities, the criterion layer includes factors such as sediment particle size, sediment hardness, head and sediment content in the machine, anti-abrasion performance of unit materials and regulating reservoir capacity, and the scheme layer includes a scheme for setting sediment interception and drainage facilities and a scheme for not setting sediment interception and drainage facilities; The criterion layer is refined, and the relative importance of each factor in the criterion layer is compared pairwise using a scaling method of 1 to 9 and its reciprocal, a judgment matrix is constructed, the weight value of each factor is determined, and a consistency check is performed; Determine the scoring rules for each factor, calculate the score of each factor, and calculate the comprehensive score based on the score of each factor and the weight value; A corresponding solution of the solution layer is determined according to the comprehensive score.
2. The method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process according to claim 1, It is characterized in that The refinement of the criterion layer includes: the sediment particle size factor includes the median sediment particle size; the sediment hardness factor includes the proportion of sediment particles with a Mohs hardness greater than 5; the water head and sediment content factor includes the water head and sediment content; the abrasion resistance factor of the unit material includes the material composition and quality grade, construction technology and environmental condition grade; the regulating storage capacity factor includes the effective storage capacity loss rate.
3. The method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process according to claim 1, It is characterized in that The scaling method of 1 to 9 and their reciprocals is defined as follows: 。 4. The method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process according to claim 1, It is characterized in that The scoring rules for the sediment particle size factor are: The scoring rules for the sediment hardness factor are: The scoring rules for the water head and sediment content are as follows: The scoring rules for the anti-abrasion performance factor of the unit material are as follows: The scoring rule for adjusting the storage capacity factor is:
5. The method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process according to claim 1, It is characterized in that The judgment matrix A=(α ij ) m×m ; Determining the weight value of each factor includes: according to formula A w =λ max ω, find the maximum eigenvalue λ of the judgment matrix max The corresponding eigenvector ω is normalized to obtain the weight value of each factor; the consistency check includes: calculating the consistency ratio Among them, the consistency index RI is the random consistency index; when CR < 0.1, the consistency check is passed; otherwise, the judgment matrix should be adjusted.
6. The method for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process according to claim 1, It is characterized in that The corresponding scheme of the scheme layer determined according to the comprehensive score includes: when the comprehensive score is less than 60 points, determining to set up a sand interception and drainage facility scheme; when the comprehensive score is greater than or equal to 60 points, determining not to set up a sand interception and drainage facility scheme.
7. A device for determining the setting of sand-blocking and drainage facilities based on the analytic hierarchy process. It is characterized in that include: A construction module is configured to construct a hierarchical model for the setting of sediment interception and drainage facilities of a pumped storage power station, wherein the hierarchical model includes a target layer, a criterion layer and a scheme layer, wherein the target layer is an optimal scheme for setting sediment interception and drainage facilities, the criterion layer includes factors such as sediment particle size, sediment hardness, head and sediment content in the machine, anti-abrasion performance of unit materials and regulating reservoir capacity, and the scheme layer includes a scheme for setting sediment interception and drainage facilities and a scheme for not setting sediment interception and drainage facilities; a matrix module is configured to refine the criterion layer, use a scaling method of 1 to 9 and its reciprocal to compare the relative importance of each factor in the criterion layer in pairs, construct a judgment matrix, determine the weight value of each factor and perform consistency check; a scoring module is configured to determine the scoring rules for each factor, calculate the score of each factor, and calculate the comprehensive score based on the score of each factor and the weight value; A result module is configured to determine a corresponding solution of the solution layer according to the comprehensive score.
8. An electronic device, It is characterized in that It includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in any one of claims 1 to 6.
9. A non-transitory computer-readable storage medium, It is characterized in that The non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in any one of claims 1 to 6.
10. A computer program product, It is characterized in that It includes computer program instructions, characterized in that when the computer program instructions are run on a computer, the computer is enabled to execute the method for determining the setting of sand-blocking and drainage facilities based on the hierarchical analysis method as described in any one of claims 1 to 6.