Coast grounding electrode arrangement optimization method and device based on multi-layer soil structure, terminal equipment and storage medium

Abstract

The invention discloses a coast grounding electrode arrangement optimization method and device based on a multi-layer soil structure, terminal equipment and a storage medium. The method comprises the following steps: acquiring coast soil resistivity, seawater resistivity and coastline slope of different horizontal layers and initial arrangement schemes of each coast grounding electrode; simulating and calculating the earth surface maximum step voltage of the coast grounding electrode and the current density of each grounding electrode feed rod under each coast grounding electrode arrangement scheme through the grounding electrode soil simulation model; calculating the correlation coefficient of the two, and calculating the weight coefficient of the current density of each grounding electrode feed rod based on the correlation coefficient; selecting a coast grounding electrode arrangement scheme to calculate an adjustment coefficient; and adjusting the optimization scheme based on the adjustment coefficient to obtain a coast grounding electrode arrangement scheme meeting the requirements. By implementing the method, the coast grounding electrode arrangement scheme can be adjusted and optimized, so that the coast grounding electrode arrangement scheme meeting the requirements is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of research on the layout of coastal grounding electrodes, and particularly to an optimization method, device, terminal device, and storage medium for the layout of coastal grounding electrodes based on a multi-layer soil structure. Background Art

[0002] A DC grounding electrode is an important supporting facility to ensure the safe, reliable, and stable operation of a DC power transmission system. In recent years, with the development of DC power transmission technology and the vigorous development of offshore wind power and island wind power, DC power transmission technology has been gradually widely applied to offshore and island wind power transmission projects. The selection of the converter station site and the grounding electrode site is relatively close to the coast. The coastal DC grounding electrode technology has significant differences from conventional land DC grounding electrodes, especially in the testing of soil resistivity near the coast and soil layer modeling analysis, and how to carry out research on the optimized layout of coastal grounding electrode schemes in combination with the soil model. Currently, the research and engineering construction of inland grounding electrodes at home and abroad are relatively mature, but there is a lack of research on the layout of coastal grounding electrodes. Summary of the Invention

[0003] Embodiments of the present invention provide an optimization method, device, terminal device, and storage medium for the layout of coastal grounding electrodes based on a multi-layer soil structure. The present invention can adjust and optimize the layout scheme of coastal grounding electrodes based on adjustment coefficients to obtain a coastal grounding electrode layout scheme that meets the requirements.

[0004] An embodiment of the present invention provides an optimization method for the layout of coastal grounding electrodes based on a multi-layer soil structure, including:

[0005] Obtain the soil resistivity of different horizontal layers of the coast, the resistivity of seawater, the coastline slope, and the initial layout schemes of each coastal grounding electrode;

[0006] Based on each coastal grounding electrode layout scheme, input the soil resistivity of different horizontal layers of the coast, the resistivity of seawater, and the coastline slope into a preset grounding electrode soil simulation model, and simulate and calculate the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme through the grounding electrode soil simulation model;

[0007] Construct a maximum step voltage vector based on all the maximum surface step voltages, construct a current density vector of the grounding electrode feeder rod based on all the current densities of the grounding electrode feeder rod, calculate the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rod, and construct a correlation coefficient matrix. Calculate the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme based on the correlation coefficient matrix;

[0008] Select a coastal grounding electrode layout plan, and calculate the adjustment coefficient of the selected coastal grounding electrode layout plan according to the weight coefficient of the current density of each grounding electrode feeder bar under all coastal grounding electrode layout plans and the current density of each grounding electrode feeder bar under the selected coastal grounding electrode layout plan;

[0009] If the adjustment coefficient meets the preset requirements, a coastal grounding electrode layout plan that meets the requirements is obtained. If the adjustment coefficient does not meet the preset requirements, the selected coastal grounding electrode layout plan is adjusted and optimized until the optimized coastal grounding electrode layout plan meets the requirements.

[0010] Furthermore, the coastal grounding electrode layout plan includes: the layout positions of each grounding electrode feeder bar;

[0011] The layout positions of the grounding electrode feeder bars in different coastal grounding electrode layout plans are different.

[0012] Furthermore, before simulating and calculating the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder bar under each coastal grounding electrode layout plan through the grounding electrode soil simulation model, it also includes:

[0013] Simulate and calculate the grounding resistance of the coastal grounding electrode under each coastal grounding electrode layout plan;

[0014] In the case where the grounding resistance is greater than the preset value, a prompt message for adjusting the layout position of the grounding electrode feeder bar or the position of the grounding electrode is generated.

[0015] Furthermore, the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder bar is calculated through the following formula:

[0016]

[0017] In the formula, P jk is the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder bar, m is the total number of grounding electrode layout plans, j is the jth grounding electrode layout plan, n is the total number of grounding electrode feeder bars, k is the kth grounding electrode feeder bar, U j ′ is U j / U 1 , U j is the maximum surface step voltage of the jth grounding electrode layout plan, U 1 is the maximum surface step voltage of the 1st grounding electrode layout plan, V jk ′ is V jk / V 1k , V jkis the current density of the k-th grounding electrode feeder rod under the j-th grounding electrode layout scheme, V 1k is the current density of the first grounding electrode feeder rod under the first grounding electrode layout scheme, and d is an adjustable coefficient.

[0018] Furthermore, through the following formula, calculate the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme:

[0019]

[0020] In the formula, z k is the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme.

[0021] Furthermore, through the following formula, calculate the adjustment coefficient of the selected coastal grounding electrode layout scheme:

[0022]

[0023] In the formula, ε j is the adjustment coefficient of the j-th coastal grounding electrode layout scheme.

[0024] Furthermore, judge whether the adjustment coefficient meets the preset requirements through the following method:

[0025] If the adjustment coefficient is greater than 0 and less than the preset value, it is determined that the adjustment coefficient meets the preset requirements;

[0026] If the adjustment coefficient is greater than the preset value and less than 1, it is determined that the adjustment coefficient does not meet the preset requirements.

[0027] Another embodiment of the present invention provides a binary mixed gas insulation strength evaluation device, including: a data acquisition module, a simulation calculation module, a weight coefficient calculation module, an adjustment coefficient calculation module, and an adjustment and optimization module;

[0028] The data acquisition module is used to acquire the coastal soil resistivity, the resistivity of seawater, the coastline slope at different horizontal layers, and the initial various coastal grounding electrode layout schemes;

[0029] The simulation calculation module is used to input the coastal soil resistivity, the resistivity of seawater, and the coastline slope at different horizontal layers into a preset grounding electrode soil simulation model based on each coastal grounding electrode layout scheme, and simulate and calculate the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme through the grounding electrode soil simulation model;

[0030] The weight coefficient calculation module is used to construct a maximum step voltage vector based on all the maximum step voltages on the ground surface, construct a current density vector of the grounding electrode feeder rods based on the current densities of all the grounding electrode feeder rods, calculate the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rods, construct a correlation coefficient matrix, and calculate the weight coefficients of the current densities of each grounding electrode feeder rod under each coastal grounding electrode layout scheme based on the correlation coefficient matrix;

[0031] The adjustment coefficient calculation module is used to select a coastal grounding electrode layout scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode layout scheme according to the weight coefficients of the current densities of each grounding electrode feeder rod under all the coastal grounding electrode layout schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode layout scheme;

[0032] The adjustment and optimization module is used to, if the adjustment coefficient meets the preset requirements, obtain the coastal grounding electrode layout scheme that meets the requirements; if the adjustment coefficient does not meet the preset requirements, adjust and optimize the selected coastal grounding electrode layout scheme until the optimized coastal grounding electrode layout scheme meets the requirements.

[0033] Another embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements a method for optimizing the layout of coastal grounding electrodes based on a multi-layer soil structure as described in any one of the above embodiments.

[0034] Another embodiment of the present invention provides a storage medium, which includes a stored computer program. When the computer program runs, it controls the device where the storage medium is located to execute a method for optimizing the layout of coastal grounding electrodes based on a multi-layer soil structure as described in any one of the above embodiments.

[0035] By implementing the present invention, the following beneficial effects are achieved:

[0036] The present invention discloses an optimization method, device, terminal device and storage medium for the arrangement of coastal grounding electrodes based on a multi-layer soil structure. The method includes obtaining the resistivity of coastal soil with different horizontal layers, the resistivity of seawater, the coastline slope, and the initial arrangement schemes of each coastal grounding electrode; simulating and calculating the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder rod under each coastal grounding electrode arrangement scheme through a grounding electrode soil simulation model; calculating the correlation coefficient between the two, and calculating the weight coefficient of the current density of each grounding electrode feeder rod based on the correlation coefficient; selecting a coastal grounding electrode arrangement scheme to calculate the adjustment coefficient; and adjusting and optimizing the scheme based on the adjustment coefficient to obtain a coastal grounding electrode arrangement scheme that meets the requirements. In the present invention, by calculating the influence weight of the current density of each feeder rod under different schemes, and then substituting the weight coefficient into this scheme for the selected scheme to calculate the adjustment coefficient, so as to estimate whether the current density is sufficiently uniform, and feedback-adjusting the coastal grounding electrode arrangement scheme based on the adjustment coefficient, and finally obtaining a coastal grounding electrode arrangement scheme that meets the requirements. Description of the Drawings

[0037] Figure 1 FIG. 6 is a schematic flowchart of an optimization method for the arrangement of coastal grounding electrodes based on a multi-layer soil structure provided by an embodiment of the present invention.

[0038] Figure 2 FIG. 10 is a schematic diagram of a coastal grounding electrode arrangement scheme provided by an embodiment of the present invention.

[0039] Figure 3 FIG. 14 is a schematic diagram of a coastal grounding electrode soil simulation model provided by an embodiment of the present invention.

[0040] Figure 4 FIG. 18 is a schematic structural diagram of an optimization method for the arrangement of coastal grounding electrodes based on a multi-layer soil structure provided by an embodiment of the present invention. Detailed Embodiments

[0041] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0044] As Figure 1 shown, it is a schematic flowchart of an optimization method for the layout of coastal grounding electrodes based on a multi-layer soil structure provided by an embodiment of the present invention, including the following steps:

[0045] Step S1, obtain the resistivity of coastal soil with different horizontal layers, the resistivity of seawater, the slope of the coastline, and the initial layout schemes of each coastal grounding electrode;

[0046] In the present invention, the resistivity of coastal soil with different horizontal layers is obtained by the soil resistance test method, the resistivity of seawater is obtained simultaneously, the slope of the coastline is measured, and the initial layout schemes of each coastal grounding electrode are obtained, providing a data basis for subsequent simulation calculations;

[0047] In a preferred embodiment, the layout scheme of the coastal grounding electrode includes: the layout positions of each grounding electrode feeder rod;

[0048] The layout positions of the grounding electrode feeder rods in each different coastal grounding electrode layout scheme are different.

[0049] Specifically, the layout scheme of the coastal grounding electrode is as Figure 2 shown.

[0050] Step S2, based on each coastal grounding electrode layout scheme, input the resistivity of coastal soil with different horizontal layers, the resistivity of seawater, and the slope of the coastline into a preset grounding electrode soil simulation model, and simulate and calculate the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme through the grounding electrode soil simulation model;

[0051] In the present invention, the measured soil resistivity of each horizontal layer of the coastal soil, the seawater resistivity, and the coastline slope between the seawater and the coast are input into the grounding electrode soil simulation model, and the maximum surface step voltage of the coastal grounding electrode under each coastal grounding electrode layout scheme and the current density of each grounding electrode feeder bar under each coastal grounding electrode layout scheme are calculated by simulation using simulation software;

[0052] Specifically, the grounding electrode soil simulation model is as Figure 3 shown;

[0053] Illustratively, the above simulation software can be CDEGS software and ANSYS software;

[0054] In a preferred embodiment, before calculating the maximum surface step voltage of the coastal grounding electrode under each coastal grounding electrode layout scheme and the current density of each grounding electrode feeder bar by simulation using the grounding electrode soil simulation model, it further includes:

[0055] Simulating and calculating the grounding resistance of the coastal grounding electrode under each coastal grounding electrode layout scheme;

[0056] When the grounding resistance is greater than the preset value, generating a prompt message for adjusting the layout position of the grounding electrode feeder bar or the position of the coastal grounding electrode.

[0057] Illustratively, the above preset value can be 1. When the grounding resistance is less than 1, a prompt message for adjusting the layout position of the grounding electrode feeder bar or the position of the grounding electrode is generated.

[0058] Step S3: Construct a maximum step voltage vector based on all the maximum surface step voltages, construct a current density vector of the grounding electrode feeder bar based on all the current densities of the grounding electrode feeder bars, calculate the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder bar, and construct a correlation coefficient matrix. Based on the correlation coefficient matrix, calculate the weight coefficient of the current density of each grounding electrode feeder bar under each coastal grounding electrode layout scheme;

[0059] In the present invention, according to the maximum surface step voltage of the coastal grounding electrode under each coastal grounding electrode layout scheme calculated by simulation, a maximum step voltage vector is constructed. According to the current density of each grounding electrode feeder bar under each coastal grounding electrode layout scheme calculated by simulation, a current density vector of the grounding electrode feeder bar is constructed. The correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder bar is calculated by using the correlation coefficient calculation formula, and a correlation coefficient matrix is constructed. Based on the correlation coefficient matrix, the weight coefficient of the current density of each grounding electrode feeder bar under each coastal grounding electrode layout scheme is calculated by using the weight coefficient calculation formula;

[0060] In a preferred embodiment, the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rod is calculated by the following formula:

[0061]

[0062] Where P jk is the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rod, m is the total grounding electrode layout scheme, j is the jth grounding electrode layout scheme, n is the total number of grounding electrode feeder rods, k is the kth grounding electrode feeder rod, U j ′ is U j / U 1 ,U j is the maximum step voltage on the ground surface of the jth grounding electrode layout scheme, U 1 is the maximum step voltage on the ground surface of the first grounding electrode layout scheme, V jk ′ is V jk / V 1k ,V jk is the current density of the kth grounding electrode feeder rod under the jth grounding electrode layout scheme, V 1k is the current density of the first grounding electrode feeder rod under the first grounding electrode layout scheme, and d is an adjustable coefficient;

[0063] In another preferred embodiment, the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme is calculated by the following formula:

[0064]

[0065] Where z k is the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme.

[0066] Step S4: Select a coastal grounding electrode layout scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode layout scheme according to the weight coefficient of the current density of each grounding electrode feeder rod under all coastal grounding electrode layout schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode layout scheme;

[0067] Among the initial coastal grounding electrode layout schemes of the present invention, select a coastal grounding electrode layout scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode layout scheme through the calculation formula of the adjustment coefficient according to the weight coefficient of the current density of each grounding electrode feeder rod under all coastal grounding electrode layout schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode layout scheme;

[0068] In a preferred embodiment, the adjustment coefficient of the selected coastal grounding electrode arrangement scheme is calculated by the following formula:

[0069]

[0070] where ε j is the adjustment coefficient of the jth coastal grounding electrode arrangement scheme.

[0071] Step S5: If the adjustment coefficient meets the preset requirements, a coastal grounding electrode arrangement scheme that meets the requirements is obtained; if the adjustment coefficient does not meet the preset requirements, the selected coastal grounding electrode arrangement scheme is adjusted and optimized until the optimized coastal grounding electrode arrangement scheme meets the requirements.

[0072] In the present invention, it is judged whether the adjustment coefficient of the selected coastal grounding electrode arrangement scheme calculated meets the preset requirements. If the adjustment coefficient meets the preset requirements, a coastal grounding electrode arrangement scheme that meets the requirements is obtained; if the adjustment coefficient does not meet the preset requirements, the selected coastal grounding electrode arrangement scheme needs to be adjusted and optimized to obtain an adjusted and optimized coastal grounding electrode arrangement scheme. For the adjusted and optimized coastal grounding electrode arrangement scheme, the adjustment coefficient is recalculated, and it is judged whether it is necessary to continue to adjust and optimize the coastal grounding electrode arrangement scheme according to whether the newly calculated adjustment coefficient meets the preset requirements. This process is looped until the adjustment coefficient meets the preset requirements, and a grounding electrode arrangement scheme that meets the requirements is obtained;

[0073] In a preferred embodiment, the following method is used to judge whether the adjustment coefficient meets the preset requirements:

[0074] If the adjustment coefficient is greater than 0 and less than the preset value, it is determined that the adjustment coefficient meets the preset requirements;

[0075] If the adjustment coefficient is greater than the preset value and less than 1, it is determined that the adjustment coefficient does not meet the preset requirements.

[0076] Based on the above method item embodiment, the present invention correspondingly provides a device item embodiment;

[0077] As Figure 4 shown, it is a schematic structural diagram of a coastal grounding electrode arrangement optimization device based on a multi-layer soil structure provided by an embodiment of the present invention, including:

[0078] A data acquisition module, a simulation calculation module, a weight coefficient calculation module, an adjustment coefficient calculation module, and an adjustment and optimization module;

[0079] The data acquisition module is used to acquire the resistivity of coastal soil with different horizontal layers, the resistivity of seawater, the coastline slope, and the initial various coastal grounding electrode arrangement schemes;

[0080] The simulation calculation module is configured to input the soil resistivity of the coastal soil with different horizontal layers, the resistivity of seawater, and the coastline slope into a preset grounding electrode soil simulation model based on each coastal grounding electrode layout scheme, and simulate and calculate the maximum surface step voltage of the coastal grounding electrode and the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme through the grounding electrode soil simulation model;

[0081] The weight coefficient calculation module is configured to construct a maximum step voltage vector based on all the maximum surface step voltages, construct a current density vector of the grounding electrode feeder rods based on the current densities of all the grounding electrode feeder rods, calculate the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rods, and construct a correlation coefficient matrix, and calculate the weight coefficient of the current density of each grounding electrode feeder rod under each coastal grounding electrode layout scheme based on the correlation coefficient matrix;

[0082] The adjustment coefficient calculation module is configured to select a coastal grounding electrode layout scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode layout scheme according to the weight coefficient of the current density of each grounding electrode feeder rod under all coastal grounding electrode layout schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode layout scheme;

[0083] The adjustment and optimization module is configured to, if the adjustment coefficient meets the preset requirements, obtain a coastal grounding electrode layout scheme that meets the requirements, and if the adjustment coefficient does not meet the preset requirements, adjust and optimize the selected coastal grounding electrode layout scheme until the optimized coastal grounding electrode layout scheme meets the requirements.

[0084] It can be understood that the above device item embodiments correspond to the method item embodiments of the present invention, and can implement an optimization method for coastal grounding electrode layout based on a multi-layer soil structure provided by any one of the above method item embodiments of the present invention.

[0085] It should be noted that the device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that they have a communication connection, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement without creative work.

[0086] Those skilled in the art can clearly understand that for the sake of convenience and conciseness, the specific working process of the device described above can refer to the corresponding process in the foregoing method embodiments, and will not be elaborated here.

[0087] Another preferred embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements an optimization method for the layout of a coastal grounding electrode based on a multi-layer soil structure as described in any one of the foregoing embodiments.

[0088] It should be noted that the terminal device mentioned here can be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art can understand that, for example, it may also include input / output devices, network access devices, buses, etc.

[0089] The so-called processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may also be any conventional processor, etc. The processor is the control center of the terminal device, and connects various parts of the entire terminal device through various interfaces and lines.

[0090] The memory can be used to store the computer program. By running or executing the computer program stored in the memory and calling the data stored in the memory, the processor realizes various functions of the terminal device. The memory may mainly include a program storage area and a data storage area. Among them, the program storage area may store an operating system, application programs required for at least one function, etc.; the data storage area may store data created according to the use of the mobile phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0091] Another preferred embodiment of the present invention provides a storage medium, which includes a stored computer program. When the computer program runs, it controls the device where the storage medium is located to execute any one of the methods for optimizing the layout of coastal grounding electrodes based on a multi-layer soil structure according to the present invention.

[0092] The storage medium is a computer-readable storage medium, and the computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0093] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure, characterized in that: include: Obtain the coastal soil resistivity of different horizontal layers, the resistivity of seawater, the slope of the coastline, and the initial layout of each coastal grounding electrode; Based on various coastal grounding electrode layout schemes, the resistivity of coastal soil in different horizontal layers, the resistivity of seawater and the slope of the coastline are input into the preset grounding electrode soil simulation model. The maximum surface step voltage of the coastal grounding electrode under each coastal grounding electrode layout scheme and the current density of each grounding electrode feeder rod are calculated through the grounding electrode soil simulation model. A maximum step voltage vector is constructed based on all the maximum step voltages on the ground surface, a current density vector of the ground electrode feeder rod is constructed based on the current density of all the ground electrode feeder rods, a correlation coefficient between the maximum step voltage vector and the current density vector of the ground electrode feeder rod is calculated, and a correlation coefficient matrix is ​​constructed, and a weight coefficient of the current density of each ground electrode feeder rod under each coastal ground electrode arrangement scheme is calculated based on the correlation coefficient matrix; Select a coastal grounding electrode arrangement scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode arrangement scheme according to the weight coefficient of the current density of each grounding electrode feeder rod under all coastal grounding electrode arrangement schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode arrangement scheme; If the adjustment coefficient meets the preset requirements, a coastal grounding electrode arrangement scheme that meets the requirements is obtained; if the adjustment coefficient does not meet the preset requirements, the selected coastal grounding electrode arrangement scheme is adjusted and optimized until the optimized coastal grounding electrode arrangement scheme meets the requirements.

2. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 1, characterized in that: The coastal grounding electrode arrangement scheme includes: the arrangement position of each grounding electrode feeder rod; The layout positions of the grounding electrode feeder rods are different in different coastal grounding electrode layout schemes.

3. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 1, characterized in that: Before calculating the maximum surface step voltage of the coast grounding electrode and the current density of each grounding electrode feeder rod under each coast grounding electrode arrangement scheme through the grounding electrode soil simulation model, it also includes: The grounding resistance of the coastal grounding electrode under various coastal grounding electrode layout schemes is simulated and calculated; When the grounding resistance is greater than a preset value, a prompt message is generated indicating that the layout position of the grounding electrode feeding rod or the position of the grounding electrode needs to be adjusted.

4. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 1, characterized in that: The correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rod is calculated by the following formula: Where P jk is the correlation coefficient between the maximum step voltage vector and the current density vector of the grounding electrode feeder rod, m is the total grounding electrode arrangement scheme, j is the jth grounding electrode arrangement scheme, n is the total number of grounding electrode feeder rods, k is the kth grounding electrode feeder rod, U j ′ For U j / U1,U j is the maximum step voltage of the ground surface of the jth grounding electrode arrangement, U1 is the maximum step voltage of the ground surface of the first grounding electrode arrangement, V jk ′ V jk / V 1k , V jk is the current density of the kth grounding electrode feeder rod under the jth grounding electrode arrangement scheme, V 1k is the current density of the first grounding electrode feeding rod under the first grounding electrode arrangement scheme, and d is the adjustable coefficient.

5. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 4, characterized in that: The weight coefficient of the current density of each grounding electrode feeder rod under each coast grounding electrode arrangement scheme is calculated by the following formula: In the formula, z k It is the weight coefficient of the current density of each grounding electrode feeding rod under each coast grounding electrode arrangement scheme.

6. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 5, characterized in that: The adjustment factor of the selected coastal grounding electrode arrangement scheme is calculated by the following formula: In the formula, ε j is the adjustment coefficient of the jth coast grounding electrode arrangement scheme.

7. A method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as claimed in claim 6, characterized in that: Whether the adjustment coefficient meets the preset requirements is determined by the following methods: If the adjustment coefficient is greater than 0 and less than a preset value, it is determined that the adjustment coefficient meets the preset requirement; If the adjustment coefficient is greater than a preset value and less than 1, it is determined that the adjustment coefficient does not meet the preset requirement.

8. A device for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure, characterized in that: include: Data acquisition module, simulation calculation module, weight coefficient calculation module, adjustment coefficient calculation module and adjustment optimization module; The data acquisition module is used to obtain the coastal soil resistivity, seawater resistivity, coastline slope and initial layout plans of various coastal grounding electrodes at different levels; The simulation calculation module is used to input the coastal soil resistivity of different horizontal layers, the resistivity of seawater and the slope of the coastline into a preset grounding electrode soil simulation model based on each coastal grounding electrode arrangement scheme, and to simulate and calculate the maximum surface step voltage of the coastal grounding electrode under each coastal grounding electrode arrangement scheme and the current density of each grounding electrode feeding rod through the grounding electrode soil simulation model; The weight coefficient calculation module is used to construct a maximum step voltage vector based on all surface maximum step voltages, construct a current density vector of the ground electrode feeder rod based on the current density of all ground electrode feeder rods, calculate the correlation coefficient between the maximum step voltage vector and the current density vector of the ground electrode feeder rod, and construct a correlation coefficient matrix, and calculate the weight coefficient of the current density of each ground electrode feeder rod under each coastal ground electrode arrangement scheme based on the correlation coefficient matrix; The adjustment coefficient calculation module is used to select a coastal grounding electrode arrangement scheme, and calculate the adjustment coefficient of the selected coastal grounding electrode arrangement scheme according to the weight coefficient of the current density of each grounding electrode feeder rod under all coastal grounding electrode arrangement schemes and the current density of each grounding electrode feeder rod under the selected coastal grounding electrode arrangement scheme; The adjustment and optimization module is used to obtain a coastal grounding electrode arrangement scheme that meets the requirements if the adjustment coefficient meets the preset requirements; if the adjustment coefficient does not meet the preset requirements, adjust and optimize the selected coastal grounding electrode arrangement scheme until the optimized coastal grounding electrode arrangement scheme meets the requirements.

9. A terminal device, characterized in that: It comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements a method for optimizing the arrangement of coastal grounding electrodes based on a multi-layer soil structure as described in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute a coastal grounding electrode arrangement optimization method based on a multi-layer soil structure as described in any one of claims 1 to 7.

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