A method, device and equipment for suppressing the capacitive effect of a low-frequency submarine cable and a storage medium
By establishing a cable simulation model and implementing different interconnection configurations, the target interconnection mode was determined, which solved the problem of poor suppression of capacitance effect in long-distance AC submarine cables and improved the safety and operational reliability of submarine cable systems.
Patent Information
- Application Number
- CN202610453958.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-08
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technologies cannot accurately predict the capacitive effect of long-distance AC submarine cables under different interconnection and grounding methods, resulting in poor suppression of the capacitive effect during cable operation and problems such as shield overvoltage and increased loss.
A cable simulation model is established, and single-point, fastened, and cross-interconnection configurations are performed. The performance parameters under each configuration are determined. Through self-verification of the simulation model, the target interconnection mode is selected to optimize the cable interconnection method and dynamically adjust the capacitance effect.
It achieves optimized management and precise suppression of the capacitance effect, improving the safety and operational reliability of submarine cable systems.
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Figure CN122456560A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of submarine cable power transmission technology, and in particular to a method, apparatus, equipment and storage medium for suppressing the capacitance effect of low-frequency submarine cables. Background Technology
[0002] With the rapid development of offshore wind power and cross-sea power transmission projects, the application of long-distance AC submarine cables is becoming increasingly widespread. However, during operation, low-frequency AC submarine cables, due to their special coaxial structure and long-distance characteristics, will generate a significant capacitance effect. This not only leads to a considerable charging current, reducing the effective transmission capacity of the cable, but also causes problems such as potential rise and additional losses in the shielding layer.
[0003] Traditional cable design methods primarily rely on simplified analytical formulas, such as capacitor models based on the parallel plate assumption. While these methods are computationally simple, they cannot accurately predict the complex capacitive behavior of long cables under actual operating conditions. Particularly, the capacitive effect of cables varies significantly under different interconnection and grounding methods, and current technologies lack a systematic analytical framework to quantify and assess these differences. Furthermore, with the continuous increase in cable transmission distance and voltage levels, the technical challenges posed by the capacitive effect are becoming increasingly prominent. Existing methods for suppressing the capacitive effect are limited to static optimization during the design phase, lacking the technical means to dynamically adjust the interconnection method during cable operation. A fixed interconnection method cannot consistently maintain optimal capacitive effect suppression, leading to degraded system performance and even problems such as shield overvoltage and increased losses. Therefore, a more reliable solution is needed. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method, device, equipment and storage medium for suppressing the capacitance effect of low-frequency submarine cables. This can optimize the interconnection method, thereby achieving optimized management and precise suppression of the capacitance effect, and improving the safety and operational reliability of submarine cable systems.
[0005] To achieve the above objectives, the present invention employs the following technical solution:
[0006] On one hand, the present invention provides a method for suppressing the capacitance effect of low-frequency submarine cables, the method comprising:
[0007] Establish a cable simulation model;
[0008] Based on preset boundary conditions, the cable simulation model is configured with single-point interconnection, tight interconnection, and cross interconnection respectively.
[0009] Determine the performance parameters for each interconnect configuration at different preset frequencies, including the charging current per unit length, shield current distribution, shield potential distribution to ground, and total loss.
[0010] If the cumulative shielding current at different preset frequencies corresponding to each interconnection configuration satisfies the linear relationship and the simulation model passes self-verification, the target interconnection mode is determined based on the performance parameters at different preset frequencies corresponding to each interconnection configuration, so as to switch the cable interconnection mode to the target interconnection mode.
[0011] In some possible implementations, the governing equations solved by the cable simulation model are as shown in equation (1):
[0012] (1);
[0013] in, Indicates electrical conductivity. Represents the vacuum permittivity. Represents the relative permittivity. Represents angular frequency. Represents electric potential, It represents the imaginary unit.
[0014] In some possible implementations, the preset boundary conditions include single-point boundary conditions, tight boundary conditions, and intersection boundary conditions;
[0015] The process of configuring the cable simulation model based on preset boundary conditions, including single-point interconnection, tight interconnection, and cross interconnection, includes:
[0016] Based on the single-point boundary conditions, the cable simulation model is configured with single-point interconnection: the starting end of the cable simulation model is grounded, and the ending end is kept electrically insulated.
[0017] Based on the aforementioned tight boundary conditions, the cable simulation model is configured with tight interconnection: both the starting and ending ends of the cable simulation model are grounded;
[0018] Based on the aforementioned cross boundary conditions, the cable simulation model is configured with cross-interconnection:
[0019] The cable simulation model is divided into a preset number of equal-length segments, and a voltage excitation with a phase difference is applied to each segment.
[0020] In some possible implementations, determining the performance parameters at different preset frequencies corresponding to each interconnect configuration includes:
[0021] The unit length charging current at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (2):
[0022] (2);
[0023] in, This represents the charging current per unit length. Represents angular frequency. Indicates the voltage relative to ground. Represents the imaginary unit; The capacitance per unit length is determined based on the first row and first column elements of the admittance matrix extracted after solving the cable simulation model, as shown in equation (3):
[0024] (3);
[0025] in, This represents the element in the first row and first column of the admittance matrix extracted after solving the cable simulation model.
[0026] The shielding current distribution at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (4):
[0027] (4);
[0028] in, Indicates the current distribution in the shielding layer. Indicates the current density modulus. Indicates the cross-sectional area of the shielding layer;
[0029] The distribution of the shielding layer to ground potential at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (5):
[0030] (5);
[0031] in, This indicates the distribution of the electric potential of the shielding layer relative to ground. This represents the electric potential of the physical region corresponding to the shielding layer;
[0032] The total loss at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (6):
[0033] (6);
[0034] in, Indicates total loss. Indicates resistance loss density. This indicates the shielding layer domain.
[0035] In some possible implementations, determining the target interconnection mode based on performance parameters at different preset frequencies corresponding to each interconnection configuration includes:
[0036] Based on the shielding layer current distribution and shielding layer potential distribution to ground at different preset frequencies corresponding to each interconnection configuration, determine the maximum reference current and maximum reference potential of the shielding layer at different preset frequencies corresponding to each interconnection configuration.
[0037] The decision matrix is determined based on the maximum reference current of the shielding layer, the maximum reference potential of the shielding layer, and the total loss at different preset frequencies corresponding to each interconnect configuration.
[0038] Based on the decision matrix, the interconnection configuration that is superior to the other two interconnection configurations is determined as the target interconnection mode.
[0039] In some possible implementations, based on the unit length charging current at different preset frequencies corresponding to each interconnect configuration, it is determined whether the cumulative shielding current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship, as shown in equation (7):
[0040] (7);
[0041] in, This indicates the accumulation of current in the shielding layer. Represents the charging current per unit length. Indicates the distance from the grounding point;
[0042] Simulation model self-verification includes:
[0043] When configuring a single-point interconnection, the shielding current at different preset frequencies is determined based on the unit length charging current at different preset frequencies to determine whether the shielding current at different preset frequencies meets the first verification information, as shown in equation (8):
[0044] (8);
[0045] in, This indicates the shielding current, and L represents the total cable length.
[0046] And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the second verification information, as shown in equation (9):
[0047] (9);
[0048] in, Indicates total loss. This represents the resistance per unit length of the shielding layer;
[0049] When configuring the tight interconnect, the shielding current at different preset frequencies is determined to meet the third verification information based on the unit length charging current at different preset frequencies, as shown in equation (10):
[0050] ; (10);
[0051] And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the fourth verification information, as shown in equation (11):
[0052] (11).
[0053] In some possible implementations, the process of determining the target interconnection mode based on performance parameters at different preset frequencies corresponding to each interconnection configuration further includes:
[0054] The ground potential of the shielding layer at different preset frequencies corresponding to the single-point interconnection configuration is determined to be less than or equal to the maximum allowable potential of the single-point interconnection shielding layer, which is shown in equation (12):
[0055] (12);
[0056] The ground potential of the shielding layer at different preset frequencies corresponding to the fastened interconnect configuration is determined to be less than or equal to the maximum allowable potential of the fastened interconnect shielding layer, which is shown in equation (13):
[0057] (13);
[0058] The shielding current at different preset frequencies corresponding to the cross-interconnect configuration is determined to be less than or equal to the maximum allowable current of the cross-interconnect shielding layer, which is shown in equation (14):
[0059] (14).
[0060] On the other hand, a low-frequency submarine cable capacitance effect suppression device is provided, the device comprising:
[0061] The data acquisition module is used to collect the operating parameters of the shielding layer and send them to the control module;
[0062] The control module is used to utilize the operating parameters and execute the low-frequency submarine cable capacitance effect suppression method as described above to determine the target interconnection mode; based on the target interconnection mode, it generates an interconnection mode switching command and sends it to the interconnection mode switching module.
[0063] An interconnection mode switching module is used to switch the interconnection mode of the cable to the target interconnection mode according to the interconnection mode switching instruction;
[0064] The three-phase shielding layer access point is used to connect the shielding layer leads of each phase of the cable to the corresponding port of the interconnection mode switching module, so as to switch the interconnection mode of the cable.
[0065] On the other hand, an electronic device is provided, the device including a processor and a memory, the memory storing at least one instruction and at least one program, the at least one instruction and the at least one program being loaded and executed by the processor to implement the low-frequency submarine cable capacitance effect suppression method as described above.
[0066] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction and at least one program are stored therein, the at least one instruction and the at least one program being loaded and executed by a processor to implement the low-frequency submarine cable capacitance effect suppression method as described above.
[0067] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:
[0068] In this invention, a cable simulation model is established. Based on preset boundary conditions, the cable simulation model is configured with single-point interconnection, tight interconnection, and cross interconnection. Performance parameters at different preset frequencies corresponding to each interconnection configuration are determined. These performance parameters include charging current per unit length, shield current distribution, shield potential distribution to ground, and total loss. When the cumulative shield current at different preset frequencies corresponding to each interconnection configuration satisfies a linear relationship and the simulation model passes self-verification, a target interconnection mode is determined based on the performance parameters at different preset frequencies corresponding to each interconnection configuration. This allows the cable interconnection mode to be switched to the target interconnection mode, resulting in a topology scheme with minimal capacitance effect and lowest loss. This optimizes the interconnection method, achieves optimized management and dynamic precise suppression of capacitance effect, and ultimately improves the safety, economy, and operational reliability of the submarine cable system. Attached Figure Description
[0069] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0070] Figure 1 This is a schematic flowchart of a method for suppressing the capacitance effect of low-frequency submarine cables provided in an embodiment of the present invention;
[0071] Figure 2This is a schematic diagram of the shielding layer current distribution under different preset frequencies corresponding to various interconnect configurations provided in an embodiment of the present invention. (a) is a schematic diagram of the shielding layer current distribution under different preset frequencies corresponding to a single-point interconnect configuration, (b) is a schematic diagram of the shielding layer current distribution under different preset frequencies corresponding to a fastened interconnect configuration, and (c) is a schematic diagram of the shielding layer current distribution under different preset frequencies corresponding to a cross-interconnect configuration.
[0072] Figure 3 This is a schematic diagram of the distribution of the shielding layer to ground potential under different preset frequencies corresponding to various interconnection configurations provided by an embodiment of the present invention. Among them, (a) is a schematic diagram of the distribution of the shielding layer to ground potential under different preset frequencies corresponding to a single-point interconnection configuration, (b) is a schematic diagram of the distribution of the shielding layer to ground potential under different preset frequencies corresponding to a tight interconnection configuration, and (c) is a schematic diagram of the distribution of the shielding layer to ground potential under different preset frequencies corresponding to a cross interconnection configuration.
[0073] Figure 4 This is a schematic diagram of a low-frequency submarine cable capacitance effect suppression device provided in an embodiment of the present invention. Detailed Implementation
[0074] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.
[0075] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.
[0076] In this embodiment of the invention, the terms "module" or "unit" refer to a computer program or part of a computer program that has a predetermined function and works with other related parts to achieve a predetermined goal, and can be implemented wholly or partially using software, hardware (such as processing circuitry or memory), or a combination thereof. Similarly, a processor (or multiple processors or memory) can be used to implement one or more modules or units. Furthermore, each module or unit can be part of an overall module or unit that includes the functionality of that module or unit.
[0077] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0078] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0079] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.
[0080] Furthermore, to better illustrate the present invention, numerous specific details are set forth in the following detailed embodiments. Those skilled in the art will understand that the present invention can be practiced without certain specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of the invention.
[0081] Figure 1 This is a flowchart illustrating a method for suppressing the capacitance effect of low-frequency submarine cables according to an embodiment of the present invention. This specification provides the method operation steps as shown in the embodiments or flowcharts, but based on conventional or non-inventive methods, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only possible execution order. In actual system or server product execution, the method can be executed sequentially according to the embodiments or drawings, or in parallel (e.g., in a parallel processor or multi-threaded processing environment). Specifically, as shown... Figure 1 As shown, the above method may include:
[0082] S101: Establish a cable simulation model;
[0083] In an optional embodiment, the control equations solved by the above cable simulation model are as shown in equation (1):
[0084] (1);
[0085] in, Indicates electrical conductivity. Represents the vacuum permittivity. Represents the relative permittivity. Represents angular frequency. Represents electric potential, It represents the imaginary unit.
[0086] In a specific embodiment, a parameterized finite element model of the cable can be established. By solving the control equations, the potential distribution and electric field distribution of each spatial point inside and around the cable model can be determined. Optionally, the model parameters corresponding to the above-mentioned cable simulation model may include a total cable length of 10km, a relative ground voltage of 127kV, a semiconductor diameter of 30mm, a cross-linked polyethylene insulation layer thickness of 20mm, a lead cladding layer thickness of 4mm, etc. Optionally, a parameterized low-frequency submarine cable simulation model can be constructed based on the basic parameters of the cable using the finite element method. The cable simulation model adopts a two-dimensional axisymmetric equivalent model to improve the processing efficiency of subsequent steps. Its control equation adopts the frequency domain current conservation law, as shown in equation (1), where the conductivity may include the material conductivity; and a scaling coordinate system is introduced to handle the difference between the actual cable length and the radial dimension, where the axial coordinate transformation satisfies ,in, Indicates the axial coordinate; This represents the scaling factor, which is optional and can be set according to actual application requirements. For example, it can be set to 1×10. 5 ; Indicates the axial coordinate; the corresponding axial conductivity is adjusted to ,in, This represents the scaled axial conductivity. The axial conductivity is represented by a scaling factor. By introducing a scaling factor and scaling the axial conductivity synchronously, the computational efficiency can be greatly improved and the convergence and stability of the numerical solution can be guaranteed without losing physical accuracy.
[0087] S102: Based on preset boundary conditions, perform single-point interconnection configuration, tight interconnection configuration and cross interconnection configuration on the cable simulation model respectively;
[0088] In an optional embodiment, the preset boundary conditions include single-point boundary conditions, fastening boundary conditions, and intersection boundary conditions.
[0089] The above-mentioned configurations for single-point interconnection, tight interconnection, and cross-interconnection of the cable simulation model based on preset boundary conditions can include:
[0090] Based on single-point boundary conditions, the cable simulation model is configured with single-point interconnection: the starting end of the cable simulation model is grounded, and the ending end is kept electrically insulated.
[0091] Based on the tight boundary conditions, the cable simulation model is configured with tight interconnection: both the start and end ends of the cable simulation model are grounded.
[0092] Based on the cross boundary conditions, the cable simulation model is configured to cross-interconnect: the cable simulation model is divided into a preset number of equal length segments, and a voltage excitation with phase difference is applied to each segment.
[0093] In a specific embodiment, the single-point boundary condition is the boundary condition for a single-point interconnect configuration. Optionally, the single-point boundary condition can be a grounding boundary condition set at the beginning of the cable and an electrically insulating state maintained at the end, forming a structure with only one grounding point. The tight boundary condition is the boundary condition for a tight interconnect configuration. Optionally, the tight boundary condition can be a grounding boundary condition set at both the beginning and end of the cable, forming a double-end grounding structure. The cross boundary condition is the boundary condition for a cross interconnect configuration. Optionally, the cross boundary condition can be dividing the cable into a preset number of equal-length regions and applying a phase difference voltage excitation to the main body of each section. The preset number of equal-length regions can be set according to actual application requirements. Specifically, the cross boundary condition can be dividing the cable into three equal-length sections and applying a phase difference voltage excitation to the main body of each section. , , The voltage excitation achieves a 120° phase difference distribution. Specifically, based on the cross boundary conditions, the cable simulation model is cross-connected: the cable simulation model is divided into three equal-length segments, and a voltage excitation with a 120° phase difference is applied to the main body of each segment.
[0094] Optionally, the cross-connection configuration is achieved by dividing the cable into N segments, and the voltage applied to the main conductor of the k-th segment satisfies the following equation:
[0095] ;
[0096] in, This represents the voltage of the main conductor in the k-th segment. This represents the voltage relative to ground; the phase difference is fixed at 120°.
[0097] In one specific embodiment, when configuring cross-interconnection, electrical insulation boundaries can be set at the connection points of each segment to ensure that only the lead cladding maintains electrical continuity.
[0098] S103: Determine the performance parameters of each interconnect configuration at different preset frequencies. The performance parameters include the charging current per unit length, the shielding current distribution, the shielding potential distribution to ground, and the total loss.
[0099] In one specific embodiment, different preset frequencies can be set according to actual application requirements. Specifically, this embodiment sets nine different frequencies to determine the electromagnetic field distribution at nine different frequency points; that is, nine analysis frequency points are selected between 10-50Hz with a step size of 5Hz. The nine different frequencies can include 10Hz, 15Hz, 20Hz, 25Hz, 30Hz, 35Hz, 40Hz, 45Hz, and 50Hz. The performance parameters corresponding to each interconnect configuration at different preset frequencies can be determined. Specifically, the unit length charging current, shielding current distribution, shielding potential distribution to ground, and total loss can be determined for each interconnect configuration at different preset frequencies.
[0100] In an optional embodiment, determining the performance parameters at different preset frequencies corresponding to each interconnect configuration may include:
[0101] The unit length charging current at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (2):
[0102] (2);
[0103] in, This represents the charging current per unit length. Represents angular frequency. Indicates the voltage relative to ground. Represents the imaginary unit; The capacitance per unit length is determined by the elements in the first row and first column of the admittance matrix extracted after solving the cable simulation model, as shown in equation (3):
[0104] (3);
[0105] in, This represents the element in the first row and first column of the admittance matrix extracted after solving the cable simulation model.
[0106] The shielding current distribution at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (4):
[0107] (4);
[0108] in, Indicates the current distribution in the shielding layer. Indicates the current density modulus. Indicates the cross-sectional area of the shielding layer;
[0109] The distribution of the shielding layer to ground potential at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (5):
[0110] (5);
[0111] in, This indicates the distribution of the electric potential of the shielding layer relative to ground. This represents the electric potential of the physical region corresponding to the shielding layer;
[0112] The total loss at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (6):
[0113] (6);
[0114] in, Indicates total loss. Indicates resistance loss density. This indicates the shielding layer domain.
[0115] In one specific embodiment, when determining the performance parameters of each interconnect configuration at different preset frequencies, it is necessary to consider the compensation of the coordinate system scaling factor to ensure the physical accuracy of the results.
[0116] In a specific embodiment, the shielding current distribution can characterize the current state at each point on the cable, and the shielding-to-ground potential distribution can characterize the potential state at each point on the cable. The control equations solved by the aforementioned cable simulation model can resolve the potentials at each spatial grid node within the cable's main body, insulation layer, shielding layer, and external environment. Optionally, the shielding-to-ground potential can be the absolute value of the potentials at multiple nodes within a specific physical region extracted from the spatial geometric domain of the cable simulation model. The total current density vector in space is equal to the sum of the conduction current density and the displacement current density, i.e., ,in, The electric field strength is represented by the magnitude of the total current density vector, which is then used to obtain the current density modulus. The current density modulus is the magnitude of the total current density vector, and the current distribution in the shielding layer is determined based on this modulus. The resistive loss density per unit volume is proportional to the square of the conductivity and the magnitude of the electric field strength at that point, i.e. The total loss is obtained by integrating the resistance loss density within the shielding layer domain. Therefore, by solving the above governing equations, the potential distribution at various spatial points inside and around the cable simulation model can be determined. Based on the solved potential distribution, the ground potential distribution of the shielding layer, the shielding current distribution, and the total loss can then be determined. Optionally, the capacitance per unit length can be solved based on the cable simulation model, and the charging current per unit length can then be determined based on the capacitance per unit length.
[0117] Optional, Figure 2 This is a schematic diagram of the shielding layer current distribution at different preset frequencies corresponding to various interconnect configurations provided in an embodiment of the present invention. (a) is a schematic diagram of the shielding layer current distribution at different preset frequencies corresponding to a single-point interconnect configuration; (b) is a schematic diagram of the shielding layer current distribution at different preset frequencies corresponding to a tight interconnect configuration; and (c) is a schematic diagram of the shielding layer current distribution at different preset frequencies corresponding to a cross interconnect configuration. Figure 2 As shown, the distribution of shielding current under different preset frequencies corresponding to different interconnect configurations can be determined. Figure 2 It can be seen that the peak current of the cross-connect configuration is significantly lower than that of the single-point interconnect configuration and the tight interconnect configuration at all frequency points, and the current distribution shows a balanced characteristic. Figure 3 This is a schematic diagram of the shielding layer potential distribution to ground at different preset frequencies corresponding to various interconnect configurations provided by an embodiment of the present invention. (a) is a schematic diagram of the shielding layer potential distribution to ground at different preset frequencies corresponding to a single-point interconnect configuration; (b) is a schematic diagram of the shielding layer potential distribution to ground at different preset frequencies corresponding to a tight interconnect configuration; and (c) is a schematic diagram of the shielding layer potential distribution to ground at different preset frequencies corresponding to a cross-interconnect configuration. Figure 3 As shown, the distribution of the shielding layer to ground potential under different preset frequencies corresponding to different interconnection configurations can be determined. Figure 3 It can be seen that the cross-connection configuration effectively controls the ground potential of the shielding layer at a low level.
[0118] In a specific embodiment, the above-mentioned unit length capacitance can also be verified using the analytical formula for coaxial capacitance, as shown in the following equation:
[0119] ;
[0120] in, Indicates capacitance per unit length. Represents the vacuum permittivity. Represents the relative permittivity. Indicates the inner radius of the insulation layer. This indicates the outer radius of the insulation layer.
[0121] S104: If the cumulative shielding current at different preset frequencies corresponding to each interconnection configuration satisfies the linear relationship and the simulation model passes self-verification, determine the target interconnection mode based on the performance parameters at different preset frequencies corresponding to each interconnection configuration, so as to switch the cable interconnection mode to the target interconnection mode.
[0122] In a specific embodiment, if the cumulative shielding current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship, and the simulation model passes self-verification, it indicates that the cable simulation model is highly accurate and reliable. Therefore, the data determined based on the cable simulation model is accurate and reliable, confirming that the aforementioned performance parameters are accurate and trustworthy. Based on these performance parameters, a target interconnection mode can be determined to improve the accuracy and reliability of the target interconnection mode selection. The target interconnection mode can be the optimal interconnection mode among the three interconnection modes.
[0123] In an optional embodiment, based on the unit length charging current at different preset frequencies corresponding to each interconnect configuration, it is determined whether the cumulative shielding current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship, as shown in equation (7):
[0124] (7);
[0125] in, This indicates the accumulation of current in the shielding layer. Represents the charging current per unit length. Indicates the distance from the grounding point;
[0126] Simulation model self-verification includes:
[0127] When configuring a single-point interconnection, the shielding current at different preset frequencies is determined based on the unit length charging current at different preset frequencies to determine whether the shielding current at different preset frequencies meets the first verification information, as shown in equation (8):
[0128] (8);
[0129] in, This indicates the shielding current, and L represents the total cable length.
[0130] And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the second verification information, as shown in equation (9):
[0131] (9);
[0132] in, Indicates total loss. This represents the resistance per unit length of the shielding layer;
[0133] When configuring the tight interconnect, the shielding current at different preset frequencies is determined to meet the third verification information based on the unit length charging current at different preset frequencies, as shown in Equation (10):
[0134] ; (10);
[0135] And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the fourth verification information, as shown in equation (11):
[0136] (11).
[0137] In a specific embodiment, the accuracy of the cable simulation model is verified by determining whether the cumulative shield current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship. If the cumulative shield current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship, the accuracy of the cable simulation model is verified, thereby confirming that the above performance parameters are accurate and reliable. Based on the above performance parameters, the target interconnect mode can be determined to improve the accuracy and reliability of the target interconnect mode selection.
[0138] By determining the shielding current and total loss of single-point interconnection configurations at different preset frequencies, and the shielding current and total loss of tight interconnection configurations at different preset frequencies, the simulation model is self-verified to ensure that the data satisfies the first, second, third, and fourth verification information determined based on the unit length charging current at different preset frequencies. If the data satisfies the first, second, third, and fourth verification information respectively, the simulation model passes self-verification, indicating that the cable simulation model is highly accurate. This demonstrates that the data determined based on the cable simulation model is accurate and reliable, thereby improving the accuracy of performance parameter determination and the accuracy and reliability of target interconnection mode selection. Optionally, since single-point interconnection and tight interconnection configurations have continuous analytical boundaries, they are selected as self-verification conditions for model accuracy, while cross-interconnection configurations can share the verified cable simulation model for solution analysis.
[0139] In an optional embodiment, the process of determining the target interconnection mode based on performance parameters at different preset frequencies corresponding to each interconnection configuration may further include:
[0140] The ground potential of the shielding layer at different preset frequencies corresponding to the single-point interconnection configuration is determined to be less than or equal to the maximum allowable potential of the single-point interconnection shielding layer, which is shown in Equation (12):
[0141] (12);
[0142] The ground potential of the shielding layer at different preset frequencies corresponding to the fastened interconnect configuration is determined to be less than or equal to the maximum allowable potential of the fastened interconnect shielding layer, which is shown in Equation (13):
[0143] (13);
[0144] The shielding current at different preset frequencies corresponding to the cross-interconnect configuration is determined to be less than or equal to the maximum allowable current of the cross-interconnect shielding layer, which is shown in Equation (14):
[0145] (14).
[0146] In one specific embodiment, the maximum permissible potential of the single-point interconnect shielding layer can be the limit range allowed by the shielding layer potential corresponding to the single-point interconnect; the maximum permissible potential of the fastened interconnect shielding layer can be the limit range allowed by the shielding layer potential corresponding to the fastened interconnect; and the maximum permissible current of the cross-interconnect shielding layer can be the limit range allowed by the shielding layer current corresponding to the cross-interconnect.
[0147] Based on the unit length charging current at different preset frequencies for single-point interconnect configurations, the maximum permissible potential of the single-point interconnect shielding layer is determined to establish the highest safe boundary for the shielding layer potential of the single-point interconnect. It is also determined that the shielding layer-to-ground potential at different preset frequencies corresponding to the single-point interconnect configuration is less than or equal to the maximum permissible potential of the single-point interconnect shielding layer, thus confirming that the distribution of the shielding layer-to-ground potential at different preset frequencies for the single-point interconnect does not exceed the permissible limit. Similarly, based on the unit length charging current at different preset frequencies for tight-fitting interconnect configurations, the maximum permissible potential of the tight-fitting interconnect shielding layer is determined to establish the highest safe boundary for the shielding layer potential of the tight-fitting interconnect. Finally, it is determined that the shielding layer-to-ground potential at different preset frequencies corresponding to the tight-fitting interconnect configuration is less than or equal to the maximum permissible potential of the tight-fitting interconnect shielding layer. This process is used to determine that the distribution of the shielding potential to ground at different preset frequencies for the tight interconnection does not exceed the allowable limit. Based on the unit length charging current at different preset frequencies for the cross-interconnection configuration, the maximum allowable current of the cross-interconnection shielding layer is determined to determine the highest safety boundary of the shielding current for the cross-interconnection. It is also determined that the shielding current at different preset frequencies corresponding to the cross-interconnection configuration is less than or equal to the maximum allowable current of the cross-interconnection shielding layer, thus confirming that the distribution of the shielding current at different preset frequencies for the cross-interconnection does not exceed the allowable limit. This proves that the cable simulation model has not crashed or reported an error, and that the data determined based on the cable simulation model is accurate and reliable, improving the accuracy of performance parameter determination and the accuracy and reliability of target interconnection mode selection.
[0148] In an optional embodiment, determining the target interconnect mode based on performance parameters at different preset frequencies corresponding to each interconnect configuration may include:
[0149] Based on the shielding current distribution and shielding potential distribution to ground at different preset frequencies corresponding to each interconnection configuration, determine the maximum reference current and maximum reference potential of the shielding layer at different preset frequencies corresponding to each interconnection configuration.
[0150] The decision matrix is determined based on the maximum reference current of the shielding layer, the maximum reference potential of the shielding layer, and the total loss at different preset frequencies corresponding to each interconnect configuration.
[0151] Based on the decision matrix, the interconnection configuration that is superior to the other two interconnection configurations is determined as the target interconnection mode.
[0152] In one specific embodiment, the maximum reference current and maximum reference potential of the shielding layer can be core reference data for determining the target interconnection mode. Optionally, the maximum reference current of the shielding layer can represent a safety assessment of local heating and overload, the maximum reference potential of the shielding layer can represent an insulation assessment of insulation breakdown and personal safety, and the total loss can represent an economic assessment of transmission efficiency. Optionally, provided that the shielding layer current distribution and shielding layer-to-ground potential distribution at different preset frequencies corresponding to each interconnection configuration do not exceed the allowable limits, the maximum reference current and maximum reference potential of the shielding layer at different preset frequencies corresponding to each interconnection configuration are determined, and then a decision matrix is determined in conjunction with the total loss. The decision matrix is used to evaluate single-point interconnection, tight interconnection, and cross interconnection to select the optimal interconnection configuration. The decision matrix can characterize the advantages and disadvantages of different interconnection configurations under different parameters; optionally, the decision matrix includes the maximum reference current of the shielding layer, the maximum reference potential of the shielding layer, and the total loss. Optionally, after determining the optimal interconnection mode, an interconnection mode switching command can be generated to switch the cable interconnection mode to the target interconnection mode.
[0153] Based on an example decision matrix shown in Table 1, it can be seen that the cross-connect configuration performs best across all frequency bands, especially at 50Hz, where its maximum reference current for the shielding layer is 10.7A, the maximum reference potential for the shielding layer is 6.9V, and the total loss is 85W, all of which are significantly better than the single-point interconnect configuration and the tight interconnect configuration. The single-point interconnect configuration is acceptable in the low-frequency band (10-20Hz), but its performance deteriorates sharply as the frequency increases. The tight interconnect configuration performs moderately in the medium-frequency band (25-40Hz).
[0154] Table 1. An example of a decision matrix
[0155]
[0156] As can be seen from the technical solutions provided in the embodiments of this specification above, this specification establishes a cable simulation model; based on preset boundary conditions, it performs single-point interconnection, tight interconnection, and cross-interconnection configurations on the cable simulation model; it determines the performance parameters at different preset frequencies corresponding to each interconnection configuration, including the charging current per unit length, shield current distribution, shield potential distribution to ground, and total loss; under the condition that the cumulative shield current at different preset frequencies corresponding to each interconnection configuration satisfies the linear relationship and the simulation model passes self-verification, it determines the target interconnection mode based on the performance parameters at different preset frequencies corresponding to each interconnection configuration, so as to switch the cable interconnection mode to the target interconnection mode, so as to switch to the topology scheme with the minimum capacitance effect and the lowest loss, thereby optimizing the interconnection method, realizing the optimized management and dynamic and precise suppression of the capacitance effect, and thus improving the safety, economy, and operational reliability of the submarine cable system.
[0157] This invention also provides a low-frequency submarine cable capacitance effect suppression device, correspondingly, Figure 4 This is a schematic diagram of a low-frequency submarine cable capacitance effect suppression device provided in an embodiment of the present invention; as shown below. Figure 4 As shown, the above-mentioned device includes:
[0158] The data acquisition module 410 is used to acquire the operating parameters of the shielding layer and send them to the control module;
[0159] The control module 420 is used to determine the target interconnection mode by using the operating parameters and executing the low-frequency submarine cable capacitance effect suppression method as described in any of the method embodiments; and to generate an interconnection mode switching instruction according to the target interconnection mode and send it to the interconnection mode switching module.
[0160] Interconnection mode switching module 430 is used to switch the interconnection mode of the cable to the target interconnection mode according to the interconnection mode switching instruction;
[0161] The three-phase shielding layer access point 440 is used to connect the shielding layer leads of each phase of the cable to the corresponding port of the interconnection mode switching module, so as to switch the interconnection mode of the cable.
[0162] In one specific embodiment, an interconnection mode switching module can be used to achieve controllable switching of the cable interconnection grounding mode. This module employs a vacuum contactor-based switching matrix, featuring a mechanical interlocking mechanism and an arc suppression circuit. Each shielding layer lead of the cable is connected to its corresponding port in the interconnection mode switching module via a three-phase shielding access point, forming a dynamically switchable physical grounding topology loop.
[0163] In one specific embodiment, the operating parameters of the shielding layer may include voltage, current, and temperature; the control module may combine the operating parameters and execute the pre-stored low-frequency submarine cable capacitance effect suppression method as described above to determine the target interconnection mode; when the current interconnection mode is different from the target interconnection mode, an interconnection mode switching command is generated according to the target interconnection mode and sent to the interconnection mode switching module; the interconnection mode module switches the interconnection mode of the cable according to the interconnection mode switching command, directly changing the grounding topology loop.
[0164] Specifically, in actual operation, the transmission load and external environment of submarine cables change dynamically in real time. The transmission load causes fluctuations in current and voltage, while the external environment causes temperature changes. These changes directly affect the actual capacitance effect of the cable at that moment. After the data acquisition module sends real-time voltage, current, and temperature data to the control module, the control module uses these as input variables for the current operating conditions. The control module, combined with a decision matrix derived from a pre-stored low-frequency submarine cable capacitance effect suppression method, recalculates and evaluates which of the three interconnection modes—single-point interconnection, tight interconnection, and cross interconnection—offers the best overall performance (safety and loss) under the current voltage, temperature, and load conditions, thus determining the target interconnection mode. When the current interconnection mode differs from the target interconnection mode, an interconnection mode switching command is generated based on the target interconnection mode and sent to the interconnection mode switching module. The interconnection mode module then switches the cable's interconnection mode according to the interconnection mode switching command.
[0165] In an optional embodiment, the above-described apparatus further includes:
[0166] The display and communication module 450 is used to display the operating parameters and transmit the data collected by the data acquisition module and the data generated by the control module to the remote monitoring master station.
[0167] Protection and power module 460 is used to supply power to the device.
[0168] In one specific embodiment, the protection and power module is specifically used to provide the device with a reliable operating environment and uninterrupted power supply.
[0169] In the above embodiments, by monitoring the operating parameters of the cable, the optimal interconnection method can be selected based on the built-in low-frequency submarine cable capacitance effect suppression method. This allows the interconnection method to be adjusted according to the actual operating status of the cable in conjunction with the built-in low-frequency submarine cable capacitance effect suppression method, thereby achieving dynamic suppression of capacitance effect. This ensures that the cable system always remains in the optimal operating state and enables full life-cycle capacitance effect management, significantly improving the adaptability, safety, and economy of the cable system.
[0170] This invention also provides an electronic device, which includes a processor and a memory. The memory stores at least one instruction, at least one program, a code set, or an instruction set. The at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the low-frequency submarine cable capacitance effect suppression method as described in any of the method embodiments.
[0171] Embodiments of the present invention also provide a computer storage medium, which may be disposed in a server to store at least one instruction, at least one program, code set, or instruction set for implementing the method embodiments. The at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the low-frequency submarine cable capacitance effect suppression method as described in any of the method embodiments.
[0172] Optionally, in embodiments of the present invention, the storage medium may be located at at least one of a plurality of network servers in a computer network. Optionally, in embodiments of the present invention, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0173] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0174] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more flowcharts and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0175] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more flowcharts and / or boxes Figure 1 The function specified in one or more boxes.
[0176] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more flowcharts and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0177] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.
[0178] Finally, it should be noted that the embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A method for suppressing the capacitance effect of low-frequency submarine cables, characterized in that, The method includes: Establish a cable simulation model; Based on preset boundary conditions, the cable simulation model is configured with single-point interconnection, tight interconnection, and cross interconnection respectively. Determine the performance parameters for each interconnect configuration at different preset frequencies, including the charging current per unit length, shield current distribution, shield potential distribution to ground, and total loss. If the cumulative shielding current at different preset frequencies corresponding to each interconnection configuration satisfies the linear relationship and the simulation model passes self-verification, the target interconnection mode is determined based on the performance parameters at different preset frequencies corresponding to each interconnection configuration, so as to switch the cable interconnection mode to the target interconnection mode.
2. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 1, characterized in that, The control equations obtained from the cable simulation model are shown in equation (1): （1）； in, Indicates electrical conductivity. Represents the vacuum permittivity. Represents the relative permittivity. Represents angular frequency. Represents electric potential, It represents the imaginary unit.
3. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 1, characterized in that, The preset boundary conditions include single-point boundary conditions, tight boundary conditions, and intersection boundary conditions. The process of configuring the cable simulation model based on preset boundary conditions, including single-point interconnection, tight interconnection, and cross interconnection, includes: Based on the single-point boundary conditions, the cable simulation model is configured with single-point interconnection: the starting end of the cable simulation model is grounded, and the ending end is kept electrically insulated. Based on the aforementioned tight boundary conditions, the cable simulation model is configured with tight interconnection: both the starting and ending ends of the cable simulation model are grounded; Based on the aforementioned cross boundary conditions, the cable simulation model is configured with cross-interconnection: The cable simulation model is divided into a preset number of equal-length segments, and a voltage excitation with a phase difference is applied to each segment.
4. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 1, characterized in that, The determination of performance parameters at different preset frequencies corresponding to each interconnect configuration includes: The unit length charging current at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (2): （2）； in, This represents the charging current per unit length. Represents angular frequency. Indicates the voltage relative to ground. Represents the imaginary unit; The capacitance per unit length is determined based on the first row and first column elements of the admittance matrix extracted after solving the cable simulation model, as shown in equation (3): （3）； in, This represents the element in the first row and first column of the admittance matrix extracted after solving the cable simulation model. The shielding current distribution at different preset frequencies corresponding to each interconnect configuration is determined as shown in equation (4): （4）； in, Indicates the current distribution in the shielding layer. Indicates the current density modulus. Indicates the cross-sectional area of the shielding layer; The distribution of the shielding layer to ground potential at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (5): （5）； in, This indicates the distribution of the electric potential of the shielding layer relative to ground. This represents the electric potential of the physical region corresponding to the shielding layer; The total loss at different preset frequencies corresponding to each interconnect configuration is determined as shown in Equation (6): （6）； in, Indicates total loss. Indicates resistance loss density. This indicates the shielding layer domain.
5. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 4, characterized in that, The step of determining the target interconnection mode based on the performance parameters at different preset frequencies corresponding to each interconnection configuration includes: Based on the shielding layer current distribution and shielding layer potential distribution to ground at different preset frequencies corresponding to each interconnection configuration, determine the maximum reference current and maximum reference potential of the shielding layer at different preset frequencies corresponding to each interconnection configuration. The decision matrix is determined based on the maximum reference current of the shielding layer, the maximum reference potential of the shielding layer, and the total loss at different preset frequencies corresponding to each interconnect configuration. Based on the decision matrix, the interconnection configuration that is superior to the other two interconnection configurations is determined as the target interconnection mode.
6. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 4, characterized in that, Based on the unit length charging current at different preset frequencies corresponding to each interconnect configuration, determine whether the cumulative shielding current at different preset frequencies corresponding to each interconnect configuration satisfies a linear relationship, as shown in equation (7): （7）； in, This indicates the accumulation of current in the shielding layer. Represents the charging current per unit length. Indicates the distance from the grounding point; Simulation model self-verification includes: When configuring a single-point interconnection, the shielding current at different preset frequencies is determined based on the unit length charging current at different preset frequencies to determine whether the shielding current at different preset frequencies meets the first verification information, as shown in equation (8): （8）； in, This indicates the shielding current, and L represents the total cable length. And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the second verification information, as shown in equation (9): （9）； in, Indicates total loss. This represents the resistance per unit length of the shielding layer; When configuring the tight interconnect, the shielding current at different preset frequencies is determined to meet the third verification information based on the unit length charging current at different preset frequencies, as shown in equation (10): ； （10）； And based on the unit length charging current at different preset frequencies, determine whether the total loss at different preset frequencies meets the fourth verification information, as shown in equation (11): （11）。 7. The method for suppressing the capacitance effect of low-frequency submarine cables according to claim 1, characterized in that, The process of determining the target interconnection mode based on the performance parameters at different preset frequencies corresponding to each interconnection configuration also includes: The ground potential of the shielding layer at different preset frequencies corresponding to the single-point interconnection configuration is determined to be less than or equal to the maximum allowable potential of the single-point interconnection shielding layer, which is shown in Equation (12): （12）； The ground potential of the shielding layer at different preset frequencies corresponding to the fastened interconnect configuration is determined to be less than or equal to the maximum allowable potential of the fastened interconnect shielding layer, which is shown in equation (13): （13）； The shielding current at different preset frequencies corresponding to the cross-interconnect configuration is determined to be less than or equal to the maximum allowable current of the cross-interconnect shielding layer, which is shown in equation (14): (14)。 8. A device for suppressing the capacitance effect of low-frequency submarine cables, characterized in that, The device includes: The data acquisition module is used to collect the operating parameters of the shielding layer and send them to the control module; The control module is configured to utilize the operating parameters and execute the low-frequency submarine cable capacitance effect suppression method as described in any one of claims 1 to 7 to determine the target interconnection mode; and generate an interconnection mode switching command based on the target interconnection mode and send it to the interconnection mode switching module. An interconnection mode switching module is used to switch the interconnection mode of the cable to the target interconnection mode according to the interconnection mode switching instruction; The three-phase shielding layer access point is used to connect the shielding layer leads of each phase of the cable to the corresponding port of the interconnection mode switching module, so as to switch the interconnection mode of the cable.
9. An electronic device comprising a processor and a memory, the memory storing at least one instruction and at least one program, the at least one instruction and the at least one program being loaded and executed by the processor to implement the low-frequency submarine cable capacitance effect suppression method as described in any one of claims 1 to 7.
10. A computer storage medium storing at least one instruction and at least one program, wherein the at least one instruction and the at least one program are loaded and executed by a processor to implement the low-frequency submarine cable capacitance effect suppression method as described in any one of claims 1 to 7.