Parameter determination method for deep-sea umbilical cable unit and deep-sea umbilical cable

Abstract

The application relates to a parameter determination method of a deep-sea umbilical cable unit and the deep-sea umbilical cable. The method comprises the following steps: inputting multiple insulating layer alternative parameters of a provided deep-sea umbilical cable unit into a preset resistance distribution model of the deep-sea umbilical cable unit, determining resistance distributions corresponding to the insulating layer alternative parameters, determining electric field distribution uniformities corresponding to the insulating layer alternative parameters according to the resistance distributions and a preset electric field distribution model, selecting an insulating layer alternative parameter with the minimum electric field distribution uniformity in the electric field distribution uniformities as a target insulating parameter, and preparing the deep-sea umbilical cable unit according to the target insulating parameter. Therefore, the insulating layer parameters corresponding to the optimal electric field distribution can be determined in the design stage, the design and determination process of the deep-sea umbilical cable unit is greatly simplified, and the working performance of the deep-sea umbilical cable unit is improved.

Description

Technical Field

[0001] This application relates to the field of deep-sea umbilical cable technology, and in particular to a method for determining the parameters of a deep-sea umbilical cable unit and a deep-sea umbilical cable. Background Technology

[0002] Deep-sea umbilical cables are a key component of underwater production systems and a lifeline for underwater production equipment. They also play a crucial role in ensuring the safety of energy transmission.

[0003] In the deep-sea environment, cables need to withstand high voltage and complex electric field conditions. If the electric field distribution is uneven, the cable insulation material will be subjected to excessive electric field strength in some areas, which will lead to aging of the insulation material or even breakdown, thereby shortening the service life of the cable.

[0004] Due to the complex structure of deep-sea umbilical cables, the insulation thickness cannot be determined using analytical formulas from traditional power cable electrical performance design methods. Therefore, the finite element method (FEM), based on arbitrary field partitioning, is currently widely used to analyze the electric field distribution of deep-sea umbilical cables. However, the FEM method has significant limitations and cannot determine the optimal electric field distribution for deep-sea umbilical cables during the design phase. Summary of the Invention

[0005] Therefore, it is necessary to provide a parameter determination method for a deep-sea umbilical cable unit that can determine the electric field distribution at the relevant stage, and a deep-sea umbilical cable, to address the above-mentioned technical problems.

[0006] Firstly, this application provides a method for determining the parameters of a deep-sea umbilical cable unit, the method comprising:

[0007] Provides multiple insulation layer options for deep-sea umbilical cable units;

[0008] Input the candidate parameters of each insulation layer into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter of the insulation layer.

[0009] The resistance distribution corresponding to each candidate parameter of the insulation layer is input into the preset electric field distribution model to determine the uniformity of the electric field distribution corresponding to each candidate parameter of the insulation layer.

[0010] The candidate insulation parameters that minimize the uniformity of the electric field distribution are determined as the target insulation parameters.

[0011] In one embodiment, the alternative parameters for the insulation layer include: insulation layer filler and / or insulation layer thickness.

[0012] In one embodiment, given that the insulation filler of the deep-sea umbilical cable unit is determined, the step of inputting each insulation layer candidate parameter into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each insulation layer candidate parameter includes:

[0013] Within a preset range, with a preset iteration step size, determine the thickness of multiple insulating layers;

[0014] Based on the thickness of each insulation layer and the resistance distribution model, the resistance distribution corresponding to each insulation layer thickness is determined.

[0015] In one embodiment, the step of determining the resistance distribution corresponding to each insulation layer thickness based on the insulation layer thickness and the resistance distribution model includes:

[0016] The insulation layer of the deep-sea umbilical cable unit is uniformly segmented;

[0017] Based on the thickness of each insulation layer, the number of segments after segmentation, and the resistance distribution model, the resistance distribution of each number of segments under each insulation layer thickness is determined.

[0018] In one embodiment, the step of uniformly segmenting the insulation layer of a deep-sea umbilical cable unit includes:

[0019] Along the radial direction of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is uniformly divided into multiple insulating rings of the same thickness.

[0020] In one embodiment, given a fixed insulation layer thickness for a deep-sea umbilical cable unit, the step of inputting candidate parameters for each insulation layer into a preset resistance distribution model for the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter includes:

[0021] Obtain the DC conductivity of each insulating layer filler;

[0022] Based on the DC conductivity and resistance distribution model of each insulating layer filler, the resistance distribution corresponding to the DC conductivity of each insulating layer filler is determined.

[0023] In one embodiment, when the insulation filler and insulation filler of the deep-sea umbilical cable unit are not determined, the step of inputting each insulation layer candidate parameter into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each insulation layer candidate parameter includes:

[0024] Based on the thickness of each insulation layer, the number of segments after uniformly dividing the insulation layer of the deep-sea umbilical cable unit, the DC conductivity of each insulation layer filler, and the resistance distribution model, the number of segments under each insulation layer thickness and the resistance distribution corresponding to the DC conductivity of each insulation layer filler are determined.

[0025] In one embodiment, the step of obtaining the DC conductivity of each insulating layer filler includes:

[0026] Using a preset operating temperature as the initial operating temperature, multiple operating temperatures are determined by a gradient descent method.

[0027] Obtain the DC conductivity of each insulating layer filler at various operating temperatures.

[0028] In one embodiment, the preset operating temperature is 343.15 Kelvin.

[0029] Secondly, this application also provides a deep-sea umbilical cable, comprising a plurality of deep-sea umbilical cable units determined by the electric field homogenization design method of the aforementioned deep-sea umbilical cable unit.

[0030] The aforementioned method for determining parameters of deep-sea umbilical cable units and the deep-sea umbilical cable itself, by inputting multiple candidate insulation layer parameters of the provided deep-sea umbilical cable unit into a preset resistance distribution model of the deep-sea umbilical cable unit, can determine the resistance distribution corresponding to each candidate insulation layer parameter. Furthermore, based on each resistance distribution and the preset electric field distribution model, the uniformity of the electric field distribution corresponding to each candidate insulation layer parameter can be determined. The candidate insulation layer parameter with the smallest electric field distribution uniformity is selected as the target insulation parameter. The deep-sea umbilical cable unit is then fabricated based on this target insulation parameter. This allows the insulation layer parameters corresponding to the optimal electric field distribution to be determined during the design phase, eliminating the need to fabricate and put all deep-sea umbilical cable units into use before determining these parameters. This significantly simplifies the design and determination process of deep-sea umbilical cable units and also improves their performance. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is an application environment diagram of the parameter determination method for a deep-sea umbilical cable unit in one embodiment;

[0033] Figure 2 This is a flowchart illustrating a method for determining parameters of a deep-sea umbilical cable unit in one embodiment.

[0034] Figure 3 This is a schematic diagram of the structure of a deep-sea umbilical cable composed of multiple deep-sea umbilical cable units in one embodiment;

[0035] Figure 4 This is a graph showing the electric field distribution of a deep-sea umbilical cable unit along the x-axis when an external voltage of 3.6kV is applied in one embodiment.

[0036] Figure 5 This is a graph showing the electric field distribution of a deep-sea umbilical cable unit along the y-axis when an external voltage of 3.6kV is applied in one embodiment.

[0037] Figure 6 A structural block diagram of a parameter determination device for a deep-sea umbilical cable unit in one embodiment;

[0038] Figure 7 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0040] The parameter determination method for deep-sea umbilical cable units provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. The data storage system can store multiple insulation layer candidate parameters that server 104 needs to process, as well as preset resistance distribution models and preset electric field distribution models for deep-sea umbilical cable units. The data storage system can be integrated on server 104 or placed in the cloud or on other network servers. Based on the multiple insulation layer candidate parameters of the deep-sea umbilical cable unit and the preset resistance distribution models, the server can determine the resistance distribution corresponding to each insulation layer candidate parameter; then, based on these resistance distributions and the preset electric field distribution models, it can determine the electric field distribution uniformity corresponding to each insulation layer candidate parameter; from all determined electric field distribution uniformities, the insulation layer candidate parameter corresponding to the minimum value is selected as the target insulation parameter and output to terminal 102 for personnel to use in the fabrication of deep-sea umbilical cable units. Terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, and tablets. Server 104 can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0041] In one exemplary embodiment, such as Figure 2 As shown, a method for determining the parameters of a deep-sea umbilical cable unit is provided, which can be applied to... Figure 1 Taking server 104 as an example, the explanation includes:

[0042] S202 provides multiple insulation layer options for deep-sea umbilical cable units.

[0043] Based on the specific preparation process of the insulation layer of the deep-sea umbilical cable unit, multiple parameters that can affect the insulation performance of the deep-sea umbilical cable unit are selected from multiple different dimensions, and these parameters are used as alternative parameters for the insulation layer to analyze the effect of these parameters on the insulation performance of the deep-sea umbilical cable unit and the electric field distribution caused by the insulation performance.

[0044] S204. Input the candidate parameters of each insulation layer into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter of the insulation layer.

[0045] Because deep-sea umbilical cables are immersed in the deep-sea environment, humidity, temperature, and the corrosiveness of seawater all alter the resistive characteristics of the cable insulation layer, thus affecting its resistance distribution. Furthermore, since the resistance distribution of the deep-sea umbilical cable insulation layer directly impacts its energy loss and operating efficiency, and because deep-sea umbilical cables are composed of multiple cable units, analyzing the resistance distribution of these units can optimize the cable's performance.

[0046] The preset resistance distribution model can be a model related to parameters such as the insulation layer thickness, the core radius of the internal conductor, the insulation conductivity of the insulation filler, and the length of the deep-sea umbilical cable unit. Correspondingly, the alternative parameters for each insulation layer can also be determined from the above dimensions.

[0047] S206, input the resistance distribution corresponding to each insulating layer candidate parameter into the preset electric field distribution model to determine the uniformity of the electric field distribution corresponding to each insulating layer candidate parameter.

[0048] Parameters such as the diameter of the conductors, the thickness of the insulation layer, the insulation filler, the voltage applied to the deep-sea umbilical cable unit, and the resistance distribution all affect the electric field distribution of the deep-sea umbilical cable unit, which in turn relates to its safety and reliability. Therefore, analyzing the electric field distribution of the deep-sea umbilical cable unit can optimize its performance.

[0049] Based on the resistance distribution corresponding to each insulation layer candidate parameter determined above, the uniformity of the electric field distribution can be comprehensively determined by taking into account both the insulation layer candidate parameters and the resistance distribution. This comprehensive approach improves the reliability of the final data obtained.

[0050] S208, determine the candidate insulation parameters with the minimum uniformity of electric field distribution as the target insulation parameters.

[0051] Minimum electric field distribution uniformity is characterized by the smallest difference between the maximum and minimum electric field strengths within a deep-sea umbilical cable unit. Therefore, the deep-sea umbilical cable unit prepared using the insulation layer candidate parameters corresponding to this electric field distribution uniformity exhibits the most uniform electric field distribution and optimal performance.

[0052] In the above-mentioned method for determining the parameters of deep-sea umbilical cable units, by inputting multiple candidate insulation layer parameters of the provided deep-sea umbilical cable unit into a preset resistance distribution model of the deep-sea umbilical cable unit, the resistance distribution corresponding to each candidate insulation layer parameter can be determined. Based on each resistance distribution and the preset electric field distribution model, the uniformity of the electric field distribution corresponding to each candidate insulation layer parameter can be determined. The candidate insulation layer parameter with the smallest electric field distribution uniformity among all the electric field distribution uniformities is selected as the target insulation parameter. The deep-sea umbilical cable unit is then fabricated based on this target insulation parameter. This allows the insulation layer parameters corresponding to the optimal electric field distribution to be determined during the design phase, without having to fabricate and put each deep-sea umbilical cable unit into use before determining the insulation layer parameters. This greatly simplifies the design and determination process of deep-sea umbilical cable units and also improves their performance.

[0053] In one exemplary embodiment, the alternative parameters for the insulation layer include: insulation layer filler and / or insulation layer thickness.

[0054] The specific materials and thickness of the insulation layer filler can be determined based on historical experience in preparing the insulation layer of deep-sea umbilical cable units. For example, the insulation layer filler can be materials such as magnesium oxide, aluminum oxide, or silicon dioxide. The insulation layer thickness can be any value within the range of 0.25 mm to 1.5 mm, or other values ​​are also possible.

[0055] In an exemplary embodiment, given that the insulation filler of the deep-sea umbilical cable unit is determined, the step of inputting each insulation layer candidate parameter into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each insulation layer candidate parameter includes:

[0056] Within a preset range, multiple insulation layer thicknesses are determined using a preset iteration step size.

[0057] Based on the thickness of each insulation layer and the resistance distribution model, the resistance distribution corresponding to each insulation layer thickness is determined.

[0058] A preset range can be determined based on historical experience in preparing the insulation layer of deep-sea umbilical cable units to obtain multiple insulation layer thicknesses. A smaller preset iteration step size allows for more precise variations in insulation layer thickness, but also requires determining more resistance distributions, increasing the workload. Therefore, a suitable preset iteration step size needs to be determined by balancing the precision of the insulation layer thickness variation with the workload.

[0059] For example, the preset range can be 0.25 mm to 1.5 mm, the preset iteration step size can be 0.01 mm, and multiple insulation layer thicknesses are obtained by iteratively increasing the value with a boundary value of 0.25 mm as the starting value and an increment value of 0.01 mm; or, multiple insulation layer thicknesses are obtained by iteratively decreasing the value with a boundary value of 1.5 mm as the starting value and an increment value of 0.01 mm.

[0060] In an exemplary embodiment, the step of determining the resistance distribution corresponding to each insulation layer thickness based on the insulation layer thickness and the resistance distribution model includes:

[0061] The insulation layer of the deep-sea umbilical cable unit is segmented into uniform sections.

[0062] Based on the thickness of each insulation layer, the number of segments after segmentation, and the resistance distribution model, the resistance distribution of each number of segments under each insulation layer thickness is determined.

[0063] Segmentation refers to segmentation along the thickness of the insulation layer. The number of segments determines the corresponding resistance distribution, thereby enabling quantitative analysis of the insulation layer resistance of the deep-sea umbilical cable unit. This allows for a more accurate assessment of the insulation performance at different insulation thicknesses, resulting in deep-sea umbilical cable units that meet industry standards and safety requirements, thus ensuring the stable operation of the deep-sea umbilical cable unit.

[0064] In an exemplary embodiment, the step of uniformly segmenting the insulation layer of a deep-sea umbilical cable unit includes:

[0065] Along the radial direction of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is uniformly divided into multiple insulating rings of the same thickness.

[0066] Using the center point of the deep-sea umbilical cable unit as the segmentation reference point and the outer shape of the inner conductor of the deep-sea umbilical cable unit as the segmentation shape of the insulation layer, the insulation layer is segmented layer by layer from the inner edge of the insulation layer towards the outer edge. For example, if the outer shape of the inner conductor of the deep-sea umbilical cable unit is circular, then the center point of the circle of the inner conductor's outer shape is used as the segmentation reference point. Starting from the inner edge of the insulation layer of the deep-sea umbilical cable unit, the insulation layer is uniformly segmented every 0.01 mm towards the outer edge, forming multiple circular insulation rings centered on the segmentation reference point. Of course, the outer shape of the inner conductor can also be square, elliptical, or other shapes, and the spacing of the uniform segmentation can be other spacing distances. It should be noted that the smaller the spacing distance, the more segments the insulation layer of the deep-sea umbilical cable unit is segmented, and the more accurate the quantitative analysis of the insulation layer resistance of the deep-sea umbilical cable unit.

[0067] In an exemplary embodiment, given a fixed insulation layer thickness for a deep-sea umbilical cable unit, the step of inputting candidate parameters for each insulation layer into a preset resistance distribution model for the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter includes:

[0068] Obtain the DC conductivity of each insulating layer filler.

[0069] Based on the DC conductivity and resistance distribution model of each insulating layer filler, the resistance distribution corresponding to the DC conductivity of each insulating layer filler is determined.

[0070] Different insulating fillers have different DC conductivity. Therefore, the specific materials of the insulating filler can be determined based on historical experience in preparing the insulation layer of deep-sea umbilical cable units, so as to obtain the resistance distribution corresponding to the DC conductivity of different insulating fillers.

[0071] In an exemplary embodiment, when the insulation filler and insulation filler of the deep-sea umbilical cable unit are not determined, the candidate parameters of each insulation layer are input into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter of the insulation layer, including:

[0072] Based on the thickness of each insulation layer, the number of segments after uniformly dividing the insulation layer of the deep-sea umbilical cable unit, the DC conductivity of each insulation layer filler, and the resistance distribution model, the number of segments under each insulation layer thickness and the resistance distribution corresponding to the DC conductivity of each insulation layer filler are determined.

[0073] When the insulation layer filler and insulation layer filler of the deep-sea umbilical cable unit are not determined, the thickness of each insulation layer, the number of segments after uniformly dividing the insulation layer of the deep-sea umbilical cable unit, and the DC conductivity of each insulation layer filler can be determined based on the above content. These can be used as inputs to the resistance distribution model to obtain the resistance distribution in multiple dimensions, thereby improving the accuracy and reliability of the obtained resistance distribution.

[0074] In an exemplary embodiment, the step of obtaining the DC conductivity of each insulating layer filler includes:

[0075] Using the preset operating temperature as the initial operating temperature, multiple operating temperatures are determined by a gradient descent method.

[0076] Obtain the DC conductivity of each insulating layer filler at various operating temperatures.

[0077] Initial operating temperature and operating temperature refer to the average operating temperature of the deep-sea umbilical cable unit under actual working conditions. During the operation of the deep-sea umbilical cable unit, the average operating temperature is affected by factors such as the deep-sea environment and current flow. A higher average operating temperature results in a higher DC conductivity, thus leading to different resistance distributions at different average operating temperatures. By expanding the range of operating temperatures, the obtained operating temperature range covers the average operating temperatures of most deep-sea umbilical cables, thereby correspondingly expanding the resistance distribution of the deep-sea umbilical cable unit.

[0078] The accuracy of the aforementioned descent gradient can be 1 Kelvin.

[0079] In one exemplary embodiment, the preset operating temperature is 343.15 Kelvin.

[0080] A Kelvin of 343.15 enables the testing environment of deep-sea umbilical cable units to match the actual application environment, thereby reducing data errors in the electric field homogenization design method of deep-sea umbilical cable units and improving the reliability of the electric field homogenization design method of deep-sea umbilical cable units.

[0081] To better illustrate the parameter determination process for deep-sea umbilical cable elements, corresponding formulas are provided to more clearly explain the parameter determination method for deep-sea umbilical cable elements. According to traditional finite element simulation results, the changes in the electric field distribution are mainly concentrated on the x-axis and y-axis. Therefore, as... Figure 3 As shown, the x-axis and y-axis determined by traditional finite element simulation results can be used as coordinate axes, with the center point of the deep-sea umbilical cable unit as the origin, to establish an xy coordinate axis parallel to the cross-section of the deep-sea umbilical cable unit. The electric field distribution on the xy coordinate axis can then be calculated through the resistance distribution on the xy coordinate axis.

[0082] The aforementioned preset resistance distribution model is as follows:

[0083]

[0084] Among them, R xi Let d represent the resistance distribution along the x-axis, i be the number of the i-th insulating layer segment, and d be the resistance distribution along the x-axis. m Let n be the insulation thickness of the deep-sea umbilical cable unit (in millimeters), n be the total number of insulation segments in the deep-sea umbilical cable unit, π be pi (π≈3.14159), l be the cable length (in millimeters), and r be the insulation thickness of the deep-sea umbilical cable unit (in millimeters). d γ is the core radius (in millimeters) of the internal conductor of the deep-sea umbilical cable unit, and γ is the insulation conductivity.

[0085] Correspondingly, there exists a resistance distribution R along the y-axis. yi :

[0086]

[0087] like Figure 3 As shown, multiple deep-sea umbilical cable units exist on the x-axis of the established xy coordinate system (such as...). Figure 3 When considering points 1 and 3), the resistance distribution can be determined based on the following resistance distribution model:

[0088]

[0089] Correspondingly, multiple deep-sea umbilical cable units exist on the y-axis of the established xy coordinate system (such as...). Figure 3 When considering points 1 and 2), the resistance distribution can be determined based on the following resistance distribution model:

[0090]

[0091] Where 2n represents the total number of insulation layer segments in the two deep-sea umbilical cable units, i.e. Figure 3 The dashed part in the text.

[0092] Use the insulating filler and / or insulating thickness as input to a predefined resistance distribution model to determine the quantified resistance distribution.

[0093] The preset electric field distribution model is as follows:

[0094]

[0095] Among them, E xi U represents the electric field distribution along the x-axis (unit: megavolts / meter), and U represents the voltage applied to the deep-sea umbilical cable unit (unit: volts).

[0096] Correspondingly, the electric field distribution E along the y-axisyi for:

[0097]

[0098] Based on the quantized resistance distribution, the corresponding quantized electric field distribution can be determined one by one.

[0099] The formula for calculating the uniformity of electric field distribution is:

[0100]

[0101] Where M is the uniformity of electric field distribution, E max Emin represents the maximum electric field strength of the deep-sea umbilical cable unit (in megavolts per meter), and Emin represents the minimum electric field strength of the deep-sea umbilical cable unit (in megavolts per meter).

[0102] The maximum and minimum electric field strengths of the deep-sea umbilical cable unit are selected from the quantified electric field distributions. Based on these distributions, the uniformity of the electric field distribution corresponding to each insulation filler and / or insulation layer thickness is determined. The insulation filler and / or insulation layer thickness with the minimum obtained electric field distribution uniformity are the optimal insulation design parameters for the deep-sea umbilical cable unit.

[0103] For example, such as Figure 3 As shown, in specific implementation, the structure of the 3.6kV deep-sea umbilical cable unit can be designed. The outer diameter of the deep-sea umbilical cable unit is 13.7 mm, the outer diameter of the core conductor of the internal conductor of the deep-sea umbilical cable unit is 3.15 mm, and the outer sheath thickness (a) of the deep-sea umbilical cable unit is 1 mm. According to the above calculation formula, and in the calculation process, the number of cable unit segments n is selected as 20, and the optimal insulation layer thickness d can be determined accordingly. m The thickness is 0.73 mm, the optimal insulating filler is aluminum oxide (conductivity 1.27 × 10⁻¹⁸), and the optimal electric field distribution is as follows: Figure 4 (where r is) Figure 3 The distance from the origin o along the x-axis (related to the insulation thickness) Figure 5 (where r is) Figure 3 As shown in the figure, the distance from the origin o along the y-axis (which is related to the insulation thickness) is as follows: the maximum electric field strength is 4.15 MV / mm, the minimum electric field strength is 2.31 MV / mm, and the electric field distribution uniformity is 0.0253.

[0104] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0105] Based on the same inventive concept, this application also provides a parameter determination device 600 for deep-sea umbilical cable units, used to implement the parameter determination method for deep-sea umbilical cable units described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more embodiments of the parameter determination device 600 for deep-sea umbilical cable units provided below can be found in the limitations of the parameter determination method for deep-sea umbilical cable units described above, and will not be repeated here.

[0106] In one exemplary embodiment, such as Figure 6 As shown, a parameter determination device 600 for a deep-sea umbilical cable unit is provided, comprising: a providing module 602, a resistance distribution determination module 604, an electric field distribution uniformity determination module 606, and a target insulation parameter determination module 608, wherein:

[0107] Module 602 is provided to provide multiple insulation layer alternative parameters for deep-sea umbilical cable units.

[0108] The resistance distribution determination module 604 is used to input the candidate parameters of each insulation layer into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each candidate parameter of the insulation layer.

[0109] The electric field distribution uniformity determination module 606 is used to input the resistance distribution corresponding to each insulating layer candidate parameter into the preset electric field distribution model to determine the electric field distribution uniformity corresponding to each insulating layer candidate parameter.

[0110] The target insulation parameter determination module 608 is used to determine the candidate insulation layer parameters with the minimum electric field distribution uniformity as the target insulation parameters.

[0111] In one exemplary embodiment, the alternative parameters for the insulation layer include: insulation layer filler and / or insulation layer thickness.

[0112] In an exemplary embodiment, when the insulation filler of the deep-sea umbilical cable unit is determined, the resistance distribution determination module 604 includes: an insulation thickness determination module and a first resistance distribution determination module.

[0113] The insulation layer thickness determination module is used to determine the thickness of multiple insulation layers within a preset range and with a preset iteration step size.

[0114] The first resistance distribution determination module is used to determine the resistance distribution corresponding to each insulation layer thickness based on the thickness of each insulation layer and the resistance distribution model.

[0115] In an exemplary embodiment, the first resistance distribution determination module includes a segmentation module and a first resistance distribution determination submodule.

[0116] The segmentation module is used to uniformly segment the insulation layer of deep-sea umbilical cable units.

[0117] The first resistance distribution determination submodule is used to determine the resistance distribution of each insulation layer thickness and each number of segments based on the thickness of each insulation layer, the number of segments after segmentation, and the resistance distribution model.

[0118] In one exemplary embodiment, the segmentation module includes a ring segmentation module.

[0119] The ring segmentation module is used to uniformly divide the insulation layer of the deep-sea umbilical cable unit into multiple insulating rings of the same thickness along the radial direction of the deep-sea umbilical cable unit.

[0120] In an exemplary embodiment, when the insulation layer thickness of the deep-sea umbilical cable unit is determined, the resistance distribution determination module 604 includes: a DC conductivity acquisition module and a second resistance distribution determination module.

[0121] The DC conductivity acquisition module is used to acquire the DC conductivity of each insulating layer filler.

[0122] The second resistance distribution determination module is used to determine the resistance distribution corresponding to the DC conductivity of each insulating layer filler based on the DC conductivity of each insulating layer filler and the resistance distribution model.

[0123] In an exemplary embodiment, when the insulation filler and the insulation filler of the deep-sea umbilical cable unit are not determined, the resistance distribution determination module 604 includes: a third resistance distribution determination module.

[0124] The third resistance distribution determination module is used to determine the resistance distribution corresponding to the number of segments and the DC conductivity of each insulation layer filler under each insulation layer thickness, based on the thickness of each insulation layer, the number of segments after uniform segmentation of the insulation layer of the deep-sea umbilical cable unit, the DC conductivity of each insulation layer filler, and the resistance distribution model.

[0125] In one exemplary embodiment, the DC conductivity acquisition module includes: an operating temperature determination module and a DC conductivity acquisition submodule.

[0126] The operating temperature determination module is used to determine multiple operating temperatures by using a preset operating temperature as the initial operating temperature and employing a gradient descent method.

[0127] The DC conductivity acquisition submodule is used to acquire the DC conductivity of each insulating layer filler at each operating temperature.

[0128] In one exemplary embodiment, the preset operating temperature is 343.15 Kelvin.

[0129] Each module in the parameter determination device 600 for the aforementioned deep-sea umbilical cable unit can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the operations corresponding to each module.

[0130] In one exemplary embodiment, a deep-sea umbilical cable is provided, comprising a plurality of deep-sea umbilical cable units determined by the electric field homogenization design method of the aforementioned deep-sea umbilical cable unit.

[0131] The deep-sea umbilical cable unit determined by the above-mentioned electric field homogenization design method can ensure high reliability and stability and a uniform electric field in the design stage.

[0132] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 7 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data on insulation filler and / or insulation thickness. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When executed by the processor, the computer program implements a method for determining parameters of a deep-sea umbilical cable unit.

[0133] Those skilled in the art will understand that Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0134] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement any step of the parameter determination method for the deep-sea umbilical cable unit described above.

[0135] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements any step of the parameter determination method for the deep-sea umbilical cable unit described above.

[0136] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements any step of the parameter determination method for the deep-sea umbilical cable unit described above.

[0137] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0138] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0139] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method of determining parameters of a deep-sea umbilical cable unit, characterized by, The method comprises: providing a plurality of insulation layer alternative parameters of a deep-sea umbilical cable unit; inputting each of the insulation layer alternative parameters into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each of the insulation layer alternative parameters; inputting the resistance distribution corresponding to each of the insulation layer alternative parameters into a preset electric field distribution model to determine an electric field distribution uniformity corresponding to each of the insulation layer alternative parameters; determining an insulation layer alternative parameter corresponding to the minimum electric field distribution uniformity as a target insulation parameter; wherein the insulation layer alternative parameters comprise an insulation layer filler and / or an insulation layer thickness; in a case where the insulation layer filler of the deep-sea umbilical cable unit is determined, inputting each of the insulation layer alternative parameters into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each of the insulation layer alternative parameters, comprising: determining a plurality of insulation layer thicknesses within a preset range at a preset iteration step; determining a resistance distribution corresponding to each of the insulation layer thicknesses according to each of the insulation layer thicknesses and the resistance distribution model; in a case where the insulation layer thickness of the deep-sea umbilical cable unit is determined, inputting each of the insulation layer alternative parameters into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each of the insulation layer alternative parameters, comprising: obtaining a direct current conductivity of each of the insulation layer fillers; determining a resistance distribution corresponding to the direct current conductivity of each of the insulation layer fillers according to the direct current conductivity of each of the insulation layer fillers and the resistance distribution model; in a case where neither the insulation layer filler nor the insulation layer thickness of the deep-sea umbilical cable unit is determined, the inputting each of the insulation layer alternative parameters into the preset resistance distribution model of the deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each of the insulation layer alternative parameters, comprising: determining a resistance distribution corresponding to each of the insulation layer thicknesses, each of the segment numbers after uniform segmentation of the insulation layer of the deep-sea umbilical cable unit, and the direct current conductivity of each of the insulation layer fillers according to each of the insulation layer thicknesses, each of the segment numbers, the direct current conductivity of each of the insulation layer fillers, and the resistance distribution model.

2. The method of claim 1, wherein, the determining a resistance distribution corresponding to each of the insulation layer thicknesses according to each of the insulation layer thicknesses and the resistance distribution model, comprising: uniformly segmenting the insulation layer of the deep-sea umbilical cable unit; determining a resistance distribution corresponding to each of the segment numbers under each of the insulation layer thicknesses according to each of the insulation layer thicknesses, each of the segment numbers after segmentation, and the resistance distribution model.

3. The method of claim 2, wherein, the uniformly segmenting the insulation layer of the deep-sea umbilical cable unit, comprising: uniformly segmenting the insulation layer of the deep-sea umbilical cable unit into a plurality of insulation rings with the same thickness along a radial direction of the deep-sea umbilical cable unit.

4. The method of claim 1, wherein, the obtaining a direct current conductivity of each of the insulation layer fillers, comprising: determining a plurality of operating temperatures using a gradient descent method with a preset operating temperature as an initial operating temperature; obtaining a direct current conductivity of each of the insulation layer fillers at each of the operating temperatures.

5. The method of claim 4, wherein, the preset operating temperature is 343.15 Kelvin.

6. A deep-sea umbilical cable, characterized by A method of electric field homogenization design comprising a plurality of deep sea umbilical cable units according to any one of claims 1-5.

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