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

Abstract

The invention relates to a parameter determination method of a deep-sea umbilical cable unit and a deep-sea umbilical cable, and the method comprises the steps: inputting a plurality of provided insulating layer alternative parameters of the deep-sea umbilical cable unit into a preset resistance distribution model of the deep-sea umbilical cable unit, and determining the resistance distribution corresponding to each insulating layer alternative parameter; according to the distribution of the resistors and a preset electric field distribution model, the electric field distribution uniformity corresponding to the alternative parameters of the insulating layers can be determined, the alternative parameter of the insulating layer with the minimum electric field distribution uniformity in the electric field distribution uniformity is selected as a target insulation parameter, and the deep-sea umbilical cable unit is prepared according to the target insulation 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] The present application relates to the technical field of deep-sea umbilical cables, and in particular to a method for determining parameters of a deep-sea umbilical cable unit and a deep-sea umbilical cable. Background Art

[0002] Deep-sea umbilical cable is one of the key components of the underwater production system and the lifeline of underwater production equipment. Deep-sea umbilical cable is an important component of energy transmission safety.

[0003] In deep-sea environments, cables need to withstand high voltage and complex electric field environments. If the electric field is unevenly distributed, the cable's insulation material will be subjected to excessive electric field strength locally, causing aging or even breakdown of the insulation material, thereby shortening the cable's service life.

[0004] Due to the complex structure of deep-sea umbilical cables, the analytical formula used in the traditional power cable electrical performance design method cannot be used to determine the insulation thickness. Therefore, at present, the finite element analysis method based on arbitrary field division technology is often used to analyze the electric field distribution of deep-sea umbilical cables. However, the finite element analysis method has great limitations and cannot determine the deep-sea umbilical cable solution with the optimal electric field distribution during the design stage. Summary of the invention

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

[0006] In a first aspect, the present application provides a method for determining parameters of a deep-sea umbilical cable unit, the method comprising:

[0007] Provide multiple insulation layer selection parameters for deep-sea umbilical cable units;

[0008] Inputting each insulation layer candidate parameter into a preset resistance distribution model of a deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each insulation layer candidate parameter;

[0009] Inputting the resistance distribution corresponding to each insulation layer candidate parameter into a preset electric field distribution model to determine the uniformity of the electric field distribution corresponding to each insulation layer candidate parameter;

[0010] The candidate parameters of the insulating layer with the minimum electric field distribution uniformity are determined as the target insulating parameters.

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

[0012] In one embodiment, when the insulation layer 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] Determining a plurality of insulation layer thicknesses within a preset range and with a preset iteration step size;

[0014] According to the thickness of each insulating layer and the resistance distribution model, the resistance distribution corresponding to the thickness of each insulating layer is determined.

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

[0016] Homogenize and segment the insulation layer of deep-sea umbilical cable units;

[0017] According to the thickness of each insulating layer, the number of segments after segmentation and the resistance distribution model, the resistance distribution of each number of segments under each insulating layer thickness is determined.

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

[0019] Along the radial direction of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is evenly divided into a plurality of insulation rings with the same thickness.

[0020] In one embodiment, when the thickness of the insulation layer 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:

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

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

[0023] In one embodiment, when both the insulation layer filler and the insulation layer 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] According to the thickness of each insulation layer, the number of sections after the insulation layer of the deep-sea umbilical cable unit is evenly segmented, the DC conductivity of the filler of each insulation layer and the resistance distribution model, the resistance distribution corresponding to the number of sections and the DC conductivity of the filler of each insulation layer under each insulation layer thickness is determined.

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

[0026] Taking the preset operating temperature as the initial operating temperature, a plurality of operating temperatures are determined by a gradient descent method;

[0027] The DC conductivity of each insulating layer filler at each operating temperature is obtained.

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

[0029] In a second aspect, the present application further provides a deep-sea umbilical cable, comprising a plurality of deep-sea umbilical cable units determined by the above-mentioned electric field homogenization design method for deep-sea umbilical cable units.

[0030] The above-mentioned parameter determination method of the deep-sea umbilical cable unit and the deep-sea umbilical cable can determine the resistance distribution corresponding to each insulation layer alternative parameter by inputting the multiple insulation layer alternative parameters of the provided deep-sea umbilical cable unit into the preset resistance distribution model of the deep-sea umbilical cable unit, and the electric field distribution uniformity corresponding to each insulation layer alternative parameter can be determined from each resistance distribution and the preset electric field distribution model, and the insulation layer alternative parameter with the smallest electric field distribution uniformity among each electric field distribution uniformity is selected as the target insulation parameter, and the deep-sea umbilical cable unit is prepared according to the target insulation parameter, so that the insulation layer parameters corresponding to the optimal electric field distribution can be determined in the design stage, without the need to prepare each deep-sea umbilical cable unit and put it into use before determining the insulation layer parameters, which greatly simplifies the design and determination process of the deep-sea umbilical cable unit and also improves the working performance of the deep-sea umbilical cable unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 FIG. 1 is an application environment diagram of a method for determining parameters of a deep-sea umbilical cable unit in one embodiment;

[0033] Figure 2 It is a schematic flow chart of a method for determining parameters of a deep-sea umbilical cable unit in one embodiment;

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

[0035] Figure 4 is a graph showing the electric field distribution curve of a deep-sea umbilical cable unit on the x-axis when a voltage of 3.6 kV is applied in one embodiment;

[0036] Figure 5 It is a curve diagram of electric field distribution of a deep-sea umbilical cable unit on the y-axis when a voltage of 3.6 kV is applied in one embodiment;

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

[0038] Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] The method for determining the parameters of a deep-sea umbilical cable unit provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store multiple insulation layer alternative parameters that the server 104 needs to process, as well as the preset resistance distribution model and the preset electric field distribution model of the deep-sea umbilical cable unit. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. The server can determine the resistance distribution corresponding to each insulation layer alternative parameter based on the multiple insulation layer alternative parameters of the deep-sea umbilical cable unit and the preset resistance distribution model; then according to these resistance distributions and the preset electric field distribution model, the electric field distribution uniformity corresponding to each insulation layer alternative parameter can be determined; from all the determined electric field distribution uniformities, the insulation layer alternative parameter corresponding to the minimum value is selected as the target insulation parameter, and output to the terminal 102, so that the staff can use the target insulation parameter to prepare the deep-sea umbilical cable unit. Among them, the terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones and tablets. The server 104 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0041] In an exemplary embodiment, Figure 2 As shown, a method for determining parameters of a deep-sea umbilical cable unit is provided, and the method is applied to Figure 1 The server 104 in FIG. 1 is used as an example to illustrate, including:

[0042] S202, providing multiple insulation layer candidate parameters for a deep-sea umbilical cable unit.

[0043] According to 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 candidate parameters of the insulation layer to analyze the effects 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, inputting each insulation layer candidate parameter into a preset resistance distribution model of a deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each insulation layer candidate parameter.

[0045] Since the deep-sea umbilical cable is immersed in the deep-sea environment, humidity, temperature and the corrosiveness of seawater will change the resistance characteristics of the deep-sea umbilical cable insulation layer, thereby affecting the resistance distribution of the deep-sea umbilical cable insulation layer. Furthermore, since the resistance distribution of the deep-sea umbilical cable insulation layer directly affects the energy loss and work efficiency of the deep-sea umbilical cable, and the deep-sea umbilical cable is composed of multiple deep-sea umbilical cable units, the performance of the deep-sea umbilical cable can be optimized by analyzing the resistance distribution of the deep-sea umbilical cable units.

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

[0047] S206, inputting the resistance distribution corresponding to each insulation layer candidate parameter into a preset electric field distribution model, and determining the uniformity of the electric field distribution corresponding to each insulation layer candidate parameter.

[0048] The diameter of the inner conductor of the deep-sea umbilical cable unit, the thickness of the insulation layer, the insulation filler, the voltage applied to the deep-sea umbilical cable unit, and the resistance distribution and other dimensional parameters will affect the electric field distribution of the deep-sea umbilical cable unit, and the electric field distribution of the deep-sea umbilical cable unit is related to the safety and reliability of the deep-sea umbilical cable unit. Therefore, analyzing the electric field distribution of the deep-sea umbilical cable unit can optimize the performance of the deep-sea umbilical cable.

[0049] According to the resistance distribution corresponding to the above-determined alternative parameters of each insulating layer, the alternative parameters of the insulating layer and the resistance distribution can be taken into account to comprehensively determine the one-to-one electric field distribution uniformity, so as to determine the electric field distribution uniformity from a comprehensive perspective, thereby improving the reliability of the data finally obtained.

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

[0051] The minimum electric field distribution uniformity is characterized by the minimum difference between the maximum electric field strength and the minimum electric field strength in the deep-sea umbilical cable unit. Therefore, the deep-sea umbilical cable unit prepared by the insulation layer alternative parameters corresponding to the electric field distribution uniformity has the most uniform electric field distribution and the best performance.

[0052] In the above-mentioned parameter determination method of the deep-sea umbilical cable unit, by inputting the multiple insulation layer alternative parameters of the provided deep-sea umbilical cable unit into the preset resistance distribution model of the deep-sea umbilical cable unit, the resistance distribution corresponding to each insulation layer alternative parameter can be determined, and the electric field distribution uniformity corresponding to each insulation layer alternative parameter can be determined by each resistance distribution and the preset electric field distribution model, and the insulation layer alternative parameter with the smallest electric field distribution uniformity among the electric field distribution uniformities is selected as the target insulation parameter, and the deep-sea umbilical cable unit is prepared according to the target insulation parameter, so that the insulation layer parameters corresponding to the optimal electric field distribution can be determined in the design stage, without the need to prepare each deep-sea umbilical cable unit and put it into use before determining the insulation layer parameters, which greatly simplifies the design and determination process of the deep-sea umbilical cable unit and also improves the working performance of the deep-sea umbilical cable unit.

[0053] In an exemplary embodiment, the insulation layer candidate parameters include: insulation layer filler and / or insulation layer thickness.

[0054] The specific material of the insulating layer filler and the specific value of the insulating layer thickness can be determined based on the historical experience of preparing the insulating layer of the deep-sea umbilical cable unit. For example, the insulating layer filler can be magnesium oxide, aluminum oxide, silicon dioxide and the like. The insulating layer thickness can be any value within the range of 0.25 mm to 1.5 mm, and of course, can also be other values.

[0055] In an exemplary embodiment, when the insulation layer 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] The thickness of multiple insulation layers is determined within a preset range and with a preset iteration step size.

[0057] According to the thickness of each insulating layer and the resistance distribution model, the resistance distribution corresponding to the thickness of each insulating layer is determined.

[0058] The 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. The smaller the preset iteration step, the finer the change in insulation layer thickness, but the more resistance distributions need to be determined, the greater the workload. Therefore, it is necessary to balance the change accuracy of insulation layer thickness and the workload to determine the appropriate preset iteration step.

[0059] Exemplarily, the preset range can be 0.25 mm to 1.5 mm, the preset iteration step can be 0.01 mm, with the boundary value of 0.25 mm as the starting value and 0.01 mm as the increase value, and multiple insulation layer thicknesses are obtained by iterative increase; or, with the boundary value of 1.5 mm as the starting value and 0.01 mm as the decrease value, multiple insulation layer thicknesses are obtained by iterative reduction.

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

[0061] Homogenize and segment the insulation layer of a deep-sea umbilical cable unit.

[0062] According to the thickness of each insulating layer, the number of segments after segmentation and the resistance distribution model, the resistance distribution of each number of segments under each insulating layer thickness is determined.

[0063] Segmentation refers to the segmentation along the thickness direction of the insulation layer. The number of segments can determine the corresponding resistance distribution, so as to quantitatively analyze the resistance of the insulation layer of the deep-sea umbilical cable unit, so as to more accurately evaluate the insulation performance under various insulation thicknesses, so as to obtain a deep-sea umbilical cable unit that meets industry standards and prescribed safety requirements, thereby ensuring the stable operation of the deep-sea umbilical cable unit.

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

[0065] Along the radial direction of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is evenly divided into a plurality of insulation rings with the same thickness.

[0066] Taking the center point of the deep-sea umbilical cable unit as the segmentation reference point, taking the outer shape of the inner conductor of the deep-sea umbilical cable unit as the segmentation shape of the insulation layer, starting from the inner edge of the insulation layer of the deep-sea umbilical cable unit, the insulation layer is segmented layer by layer in the direction of the outer edge of the insulation layer of the deep-sea umbilical cable unit. Exemplarily, if the outer shape of the inner conductor of the deep-sea umbilical cable unit is circular, taking the center point of the circular shape of the inner conductor as the segmentation reference point, starting from the inner edge of the insulation layer of the deep-sea umbilical cable unit, in the direction of the outer edge of the insulation layer of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is homogenized and segmented every 0.01 mm to form a plurality of circular insulation rings centered on the segmentation reference point. Of course, the outer shape of the inner conductor can also be a square, an ellipse, etc., and the spacing distance of the homogenized segmentation can be other spacing distances. It should be noted that the smaller the spacing distance, the more segments of the insulation layer of the deep-sea umbilical cable unit, and the more accurate the quantitative analysis of the insulation layer resistance of the deep-sea umbilical cable unit.

[0067] In an exemplary embodiment, when the thickness of the insulation layer 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:

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

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

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

[0071] In an exemplary embodiment, when both the insulation layer filler and the insulation layer filler of the deep-sea umbilical cable unit are not determined, each insulation layer candidate parameter is input 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, including:

[0072] According to the thickness of each insulation layer, the number of sections after the insulation layer of the deep-sea umbilical cable unit is evenly segmented, the DC conductivity of the filler of each insulation layer and the resistance distribution model, the resistance distribution corresponding to the number of sections and the DC conductivity of the filler of each insulation layer under each insulation layer thickness is determined.

[0073] When both the insulation layer filler and the insulation layer filler of the deep-sea umbilical cable unit are not determined, the thickness of each insulation layer, the number of segments after the insulation layer of the deep-sea umbilical cable unit is evenly segmented, and the DC conductivity of each insulation layer filler can be determined based on the above content and 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] The preset operating temperature is used as the initial operating temperature, and a plurality of operating temperatures are determined by a gradient descent method.

[0076] The DC conductivity of each insulating layer filler at each operating temperature is obtained.

[0077] The 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 deep-sea environment, the flow of current, etc. will affect the average operating temperature of the deep-sea umbilical cable unit, and the higher the average operating temperature of the deep-sea umbilical cable unit, the greater the DC conductivity of the deep-sea umbilical cable unit. Therefore, under different average operating temperatures, the resistance distribution of the deep-sea umbilical cable unit is different. By expanding the operating temperature, the obtained operation covers the average operating temperature of most deep-sea umbilical cables to correspond to the expanded resistance distribution of the deep-sea umbilical cable unit.

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

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

[0080] 343.15 Kelvin can make the test environment of the deep-sea umbilical cable unit consistent with the environment in actual applications, thereby reducing the data error of the electric field homogenization design method of the deep-sea umbilical cable unit and improving the reliability of the electric field homogenization design method of the deep-sea umbilical cable unit.

[0081] In order to better illustrate the process of determining the parameters of the deep-sea umbilical cable unit, the corresponding formula is now provided to more clearly explain the method of determining the parameters of the deep-sea umbilical cable unit. According to the traditional finite element simulation results, the changes in the electric field distribution are mainly concentrated on the x-axis and y-axis. Therefore, if Figure 3 As shown, the x-axis and y-axis determined by the traditional finite element simulation results can be used as coordinate axes, and the center point of the deep-sea umbilical cable unit can be used as the origin to establish an xy coordinate axis parallel to the cross-section of the deep-sea umbilical cable unit, so as to calculate the electric field distribution on the xy coordinate axis through the resistance distribution on the xy coordinate axis.

[0082] Among them, the above preset resistance distribution model is:

[0083]

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

[0085] Correspondingly, there is a resistance distribution R in the y-axis direction yi :

[0086]

[0087] like Figure 3 As shown, there are multiple deep-sea umbilical cable units (such as Figure 3 1 and 3) in the figure, the resistance distribution can be determined according to the following resistance distribution model:

[0088]

[0089] Correspondingly, there are multiple deep-sea umbilical cable units on the y-axis of the established xy coordinate axis (such as Figure 3 When 1 and 2) are used, the resistance distribution can be determined according to the following resistance distribution model:

[0090]

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

[0092] The insulating layer filling and / or the insulating layer thickness are used as inputs to a preset resistance distribution model to determine a quantized resistance distribution.

[0093] The preset electric field distribution model is:

[0094]

[0095] Among them, E xi is the electric field distribution in the x-axis direction (unit: MV / m), and U is the voltage applied to the deep-sea umbilical cable unit (unit: volt).

[0096] Correspondingly, the electric field distribution E in the y-axis direction isyi for:

[0097]

[0098] The corresponding quantized electric field distributions can be determined one by one according to the quantized resistance distributions.

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

[0100]

[0101] Where M is the uniformity of electric field distribution, E max is the maximum field strength of the deep-sea umbilical cable unit (unit: MV / m), and Emin is the minimum field strength of the deep-sea umbilical cable unit (unit: MV / m).

[0102] The maximum and minimum field strengths of the deep-sea umbilical cable unit are selected from the quantified electric field distribution, and the electric field distribution uniformity corresponding to each insulating layer filler and / or each insulating layer thickness is determined according to each quantified electric field distribution. The insulating layer filler and / or each insulating layer thickness with the minimum electric field distribution uniformity is the optimal insulating layer design parameter of the deep-sea umbilical cable unit.

[0103] For example, Figure 3 As shown, in a specific implementation, a 3.6kV deep-sea umbilical cable unit can be structurally designed. The outer diameter of the deep-sea umbilical cable unit is 13.7 mm, the outer diameter of the core conductor of the inner conductor of the deep-sea umbilical cable unit is 3.15, 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 is 0.73 mm, the best insulating layer filler is aluminum oxide (conductivity is 1.27×10-18), and the best electric field distribution is Figure 4 (where r is Figure 3 The distance from the origin o of the coordinate axis along the x-axis direction is related to the insulation thickness). Figure 5 (where r is Figure 3 As shown in the figure, the maximum field strength is 4.15 MV / mm, the minimum field strength is 2.31 MV / mm, and the uniformity of the electric field distribution is 0.0253.

[0104] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0105] Based on the same inventive concept, the embodiment of the present application also provides a deep-sea umbilical cable unit parameter determination device 600 for implementing the deep-sea umbilical cable unit parameter determination method involved in the above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more deep-sea umbilical cable unit parameter determination devices 600 provided below can refer to the above limitations on the deep-sea umbilical cable unit parameter determination method, which will not be repeated here.

[0106] In an exemplary embodiment, 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] The providing module 602 is used to provide a plurality of insulation layer candidate parameters of a deep-sea umbilical cable unit.

[0108] The resistance distribution determination module 604 is used to input 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.

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

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

[0111] In an exemplary embodiment, the insulation layer candidate parameters include: insulation layer filler and / or insulation layer thickness.

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

[0113] The insulating layer thickness determination module is used to determine multiple insulating layer thicknesses within a preset range with a preset iteration step.

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

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

[0116] The segmentation module is used to homogenize 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 number of segments under each insulation layer thickness according to the thickness of each insulation layer, the number of segments after segmentation, and the resistance distribution model.

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

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

[0120] In an exemplary embodiment, when the thickness of the insulation layer 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 insulation layer filler according to the DC conductivity of each insulation layer filler and the resistance distribution model.

[0123] In an exemplary embodiment, when both the insulation layer filler and the insulation layer 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 sections under each insulation layer thickness and the DC conductivity of each insulation layer filler according to the thickness of each insulation layer, the number of sections after the insulation layer of the deep-sea umbilical cable unit is evenly segmented, the DC conductivity of each insulation layer filler and the resistance distribution model.

[0125] In an 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 using a preset operating temperature as an initial operating temperature by adopting a gradient descent method.

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

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

[0129] Each module in the above-mentioned deep-sea umbilical cable unit parameter determination device 600 can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

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

[0131] The deep-sea umbilical cable unit determined according to the electric field homogenization design method of the deep-sea umbilical cable unit can determine a deep-sea umbilical cable with high reliability and stability and uniform electric field during the design stage.

[0132] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 7 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store insulation layer fillers and / or insulation layer thickness data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining parameters of a deep-sea umbilical cable unit is implemented.

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

[0134] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, any step of the above-mentioned method for determining parameters of a deep-sea umbilical cable unit is implemented.

[0135] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, any step of the above-mentioned method for determining parameters of a deep-sea umbilical cable unit is implemented.

[0136] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements any step of the above-mentioned method for determining parameters of a deep-sea umbilical cable unit.

[0137] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0138] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining parameters of a deep-sea umbilical cable unit, characterized in that: The method comprises: Provide multiple insulation layer options for deep-sea umbilical cable units; Inputting each of the insulation layer candidate parameters into a preset resistance distribution model of a deep-sea umbilical cable unit to obtain a resistance distribution corresponding to each of the insulation layer candidate parameters; Inputting the resistance distribution corresponding to each of the insulation layer candidate parameters into a preset electric field distribution model to determine the uniformity of the electric field distribution corresponding to each of the insulation layer candidate parameters; The candidate insulation layer parameters with the minimum electric field distribution uniformity are determined as target insulation parameters.

2. The method according to claim 1, characterized in that: The optional parameters of the insulation layer include: insulation layer filler and / or insulation layer thickness.

3. The method according to claim 2, characterized in that When the insulation layer filler of the deep-sea umbilical cable unit is determined, each of the insulation layer candidate parameters is input into a preset resistance distribution model of the deep-sea umbilical cable unit to obtain the resistance distribution corresponding to each of the insulation layer candidate parameters, including: Determining a plurality of insulation layer thicknesses within a preset range and with a preset iteration step size; The resistance distribution corresponding to each insulation layer thickness is determined according to the insulation layer thickness and the resistance distribution model.

4. The method according to claim 3, characterized in that: The determining, according to the thickness of each insulating layer and the resistance distribution model, the resistance distribution corresponding to each insulating layer thickness comprises: homogenizing and segmenting the insulation layer of the deep-sea umbilical cable unit; The resistance distribution of each number of segments under each insulation layer thickness is determined according to the insulation layer thickness, the number of segments after segmentation, and the resistance distribution model.

5. The method according to claim 4, characterized in that The step of homogenizing and segmenting the insulation layer of the deep-sea umbilical cable unit comprises: Along the radial direction of the deep-sea umbilical cable unit, the insulation layer of the deep-sea umbilical cable unit is evenly divided into a plurality of insulation rings with the same thickness.

6. The method according to claim 2, characterized in that When the thickness of the insulation layer of the deep-sea umbilical cable unit is determined, each of the insulation layer candidate parameters is input 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 candidate parameters, including: Obtaining the DC conductivity of each insulating layer filler; According to the DC conductivity of each insulating layer filler and the resistance distribution model, the resistance distribution corresponding to the DC conductivity of each insulating layer filler is determined.

7. The method according to claim 2, characterized in that In the case that both the insulation layer filler and the insulation layer filler of the deep-sea umbilical cable unit are not determined, the step of inputting each of the insulation layer candidate 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 candidate parameters includes: According to the thickness of each insulation layer, the number of sections after the insulation layer of the deep-sea umbilical cable unit is evenly segmented, the DC conductivity of each insulation layer filler and the resistance distribution model, the resistance distribution corresponding to the number of sections under each insulation layer thickness and the DC conductivity of each insulation layer filler is determined.

8. The method according to claim 6 or 7, characterized in that: Obtaining the DC conductivity of each insulating layer filler, including: Taking the preset operating temperature as the initial operating temperature, a plurality of operating temperatures are determined by a gradient descent method; The DC conductivity of each insulating layer filler at each operating temperature is obtained.

9. The method according to claim 8, characterized in that The preset operating temperature is 343.15 Kelvin.

10. A deep-sea umbilical cable, characterized in that: It comprises a plurality of deep-sea umbilical cable units determined by the electric field homogenization design method for deep-sea umbilical cable units according to any one of claims 1 to 9.

Images