Method, device and electronic equipment for determining dynamic submarine cable parameters

Abstract

The present application discloses a method, device, and electronic device for determining parameters of a dynamic submarine cable, relating to the field of new energy technology. The method comprises: obtaining initial shape parameters of a dynamic submarine cable; constructing a submarine cable parameter determination model including a submarine cable length objective function and a shape parameter sub-model based on historical environmental data and historical floating generator set data, wherein the submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter sub-model is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set; optimizing the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters. This can improve the parameter optimization efficiency, minimize material and energy consumption, reduce the redundancy and cost of the dynamic submarine cable, and improve the dynamic response adaptability of the dynamic submarine cable.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a method, device and electronic equipment for determining dynamic submarine cable parameters. Background Art

[0002] In the field of new energy technology, compared with conventional wind power generation installed on the ground, floating offshore wind turbines, as the core equipment for deep-sea wind energy development, have attracted more and more attention due to the greater development potential of offshore wind power resources.

[0003] Floating offshore wind turbines are more adaptable to complex seabed topography and geological conditions, and can significantly expand the scope of offshore wind power development areas. Floating offshore wind turbines are mainly composed of four parts: the upper wind turbine, the floating foundation, the mooring system, and the dynamic submarine cable. Among them, the dynamic submarine cable is the key carrier of energy transmission. The power generated by the floating wind turbine is transmitted to the onshore booster station through the dynamic submarine cable, and then connected to the power grid by the booster station. The end of the dynamic submarine cable is connected to the floating foundation and will move with the movement of the floating foundation and the flow of seawater. At the same time, it must maintain a certain strength to meet the normal operation of the dynamic submarine cable. The design of the dynamic submarine cable needs to take into account the maintenance of the linear shape, meet the requirements of cost reduction, and ensure that it can survive the impact of extreme loads.

[0004] Currently, the design of dynamic submarine cables is mostly focused on improving the local structure of the dynamic submarine cables or upgrading the monitoring methods. As a result, the engineering design generally adopts high-redundancy solutions to ensure safety, which in turn makes the cost higher and limits the large-scale development of floating offshore wind turbines.

[0005] Currently, no effective solution has been proposed to the above-mentioned problems of redundancy and high cost of dynamic submarine cables. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a method, device and electronic equipment for determining dynamic submarine cable parameters to solve the problems of redundancy and high cost of dynamic submarine cables.

[0007] To solve the above technical problems, the first aspect of this specification provides a method for determining dynamic submarine cable parameters, comprising:

[0008] Acquiring initial shape parameters of the dynamic submarine cable, wherein the initial shape parameters are determined based on collected historical environmental data of the target sea area and historical floating generator set data;

[0009] Constructing a submarine cable parameter determination model based on historical environmental data and historical floating generator set data, including a submarine cable length objective function and a shape parameter sub-model, wherein the submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter sub-model is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set;

[0010] The initial shape parameters are optimized based on the submarine cable parameter determination model to obtain target shape parameters.

[0011] In some embodiments of the present specification, the shape parameters of the dynamic submarine cable include at least one of the following: dynamic submarine cable length, number of buoys, buoy positions, number of counterweights, counterweight positions, fairlead hole positions, mooring radius, and dynamic and static cable connection depth.

[0012] In some embodiments of this specification, obtaining initial shape parameters of a dynamic submarine cable includes:

[0013] Acquiring the historical environmental data and the historical floating power generation unit data;

[0014] Determining a mooring type of a floating offshore wind turbine to which the dynamic submarine cable belongs based on the historical environmental data and the historical floating turbine data;

[0015] The initial shape parameters are determined based on the mooring type, the historical environmental data, and the historical floating power generation unit data, in combination with preset economic objectives and operating condition control objectives.

[0016] In some embodiments of this specification, the initial shape parameters include at least an initial length of the dynamic submarine cable, and the initial length is determined by the following formula:

[0017] ;

[0018] Wherein, L0 represents the initial length, K represents the safety factor of the dynamic submarine cable, S represents the horizontal distance between the chock and the connection point of the submarine cable, and H represents the vertical height difference between the chock and the connection point of the submarine cable. The horizontal distance and the vertical height difference are determined based on historical floating generator set data.

[0019] In some embodiments of this specification, the initial shape parameters include at least a minimum curvature radius of the dynamic submarine cable, and the minimum curvature radius is determined by the following formula:

[0020] R min =Max(a1D,b1H S T Z 2 );

[0021] Among them, R min represents the minimum curvature radius, D represents the outer diameter of the dynamic submarine cable, H S represents the effective wave height of the target sea area, T Z represents the zero-crossing period of the target sea area, a1 and b1 represent preset coefficients, and the significant wave height and the zero-crossing period are determined based on the historical environmental data.

[0022] In some embodiments of this specification, the shape parameter sub-model includes at least a buoy position sub-model, and the buoy position sub-model is constructed in the following manner:

[0023] Based on the historical environmental data and the historical floating generator set data, determining motion characteristic parameters of the floating generator set that affect the position of the buoy, including at least a motion amplitude parameter of the floating foundation and a bending flexibility parameter of the dynamic submarine cable;

[0024] The correlation between the motion amplitude parameter, the bending flexibility parameter and the length of the dynamic submarine cable is determined, and the buoy position sub-model is constructed.

[0025] In some embodiments of this specification, the buoy position submodel is expressed by the following formula:

[0026] λ=a2·(X rms surge / L)+b2·(R min / L);

[0027] L1=λ·L;

[0028] Wherein, L1 represents the distance between the buoy and the fairlead of the dynamic submarine cable, L represents the length of the dynamic submarine cable; X rms surge R represents the root mean square displacement of the longitudinal motion of the floating foundation, min It represents the minimum curvature radius of the dynamic submarine cable, and a2 and b2 represent the preset coefficients.

[0029] In some embodiments of this specification, the shape parameter sub-model includes at least a counterweight position sub-model, and the counterweight position sub-model is constructed in the following manner:

[0030] Based on the historical environmental data and the historical floating generator set data, determining the motion characteristic parameters of the floating generator set that affect the position of the counterweight block, including at least the motion amplitude parameters of the floating foundation, the bending flexibility parameters of the dynamic submarine cable, and the resonance characteristic parameters between the ocean current and the mooring chain;

[0031] The correlation between the motion amplitude parameter, the bending flexibility parameter, the resonance characteristic parameter and the length of the dynamic submarine cable is determined, and the counterweight position sub-model is constructed.

[0032] In some embodiments of this specification, the counterweight position submodel is expressed by the following formula:

[0033] δ=(a2·(X rms surge / L)+b2·(R min / L))·(1-U c / f n D);

[0034] L2=δ·L;

[0035] Wherein, L2 represents the distance between the counterweight block and the fairlead hole of the dynamic submarine cable, L represents the length of the dynamic submarine cable; X rms surge R represents the root mean square displacement of the longitudinal motion of the floating foundation, min Indicates the minimum curvature radius of the dynamic submarine cable; U c represents the bottom current velocity of the target sea area, f n represents the natural frequency of the mooring chain, D represents the outer diameter of the dynamic submarine cable, and a2 and b2 represent the preset coefficients.

[0036] In some embodiments of this specification, the submarine cable length objective function is expressed by the following formula:

[0037] ;

[0038] Where F(L) represents the cable length objective function, C(L) represents the unit length cost corresponding to the target length of the dynamic submarine cable, C0 represents the benchmark cost, σ max (L) represents the maximum bending stress corresponding to the target length of the dynamic submarine cable, σ allow It represents the stress safety margin of the dynamic submarine cable, and α and β represent weight coefficients.

[0039] In some embodiments of this specification, after optimizing the initial shape parameters based on the submarine cable parameter determination model, the method further includes:

[0040] Determining index values ​​corresponding to preset evaluation indicators of the dynamic submarine cable based on the target shape parameters, wherein the preset evaluation indicators include at least a unit cost, a fatigue damage accumulation index, and a dynamic bending radius of the dynamic submarine cable;

[0041] Based on the indicator value corresponding to each preset evaluation indicator and the indicator threshold corresponding to each preset evaluation indicator, the indicator evaluation result corresponding to the target shape parameter is determined.

[0042] In some embodiments of this specification, after determining the index evaluation result corresponding to the target shape parameter, the method further includes:

[0043] When the indicator value corresponding to any preset evaluation indicator does not meet the corresponding indicator threshold, the target shape parameter is adjusted based on the relationship between the indicator value corresponding to the preset evaluation indicator and the indicator threshold corresponding to the preset evaluation indicator, and the correlation between the preset evaluation indicator and the shape parameter of the dynamic submarine cable.

[0044] A second aspect of this specification provides a device for determining dynamic submarine cable parameters, comprising:

[0045] An acquisition module is used to acquire initial shape parameters of the dynamic submarine cable, wherein the initial shape parameters are determined based on the collected historical environmental data of the target sea area and historical floating generator set data;

[0046] a construction module for constructing a submarine cable parameter determination model including a submarine cable length objective function and a shape parameter submodel based on historical environmental data and historical floating generator set data, wherein the submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter submodel is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set;

[0047] An optimization module is used to optimize the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters.

[0048] The third aspect of this specification provides an electronic device, comprising: a memory and a processor, wherein the processor and the memory are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the steps of the method described in the first aspect.

[0049] A fourth aspect of this specification provides a computer storage medium, wherein the computer storage medium stores computer program instructions, and when the computer program instructions are executed, the steps of the method described in the first aspect are implemented.

[0050] A fifth aspect of this specification provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the method described in the first aspect.

[0051] The method, device, and electronic device for determining dynamic submarine cable parameters in the embodiments of this specification obtain initial shape parameters of the dynamic submarine cable, where the initial shape parameters are determined based on historical environmental data and historical floating generator set data collected from the target sea area; a submarine cable parameter determination model is constructed based on the historical environmental data and historical floating generator set data, including a submarine cable length objective function and a shape parameter sub-model; the submarine cable parameter determination model includes a preset length objective function and preset constraints; the shape parameter sub-model is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set; and the initial shape parameters are optimized based on the submarine cable parameter determination model to obtain the target shape parameters. Through the above method, historical environmental data and historical floating turbine data are used to drive the generation of initial shape parameters, and a submarine cable parameter determination model is constructed in combination with a preset length objective function, preset constraints and a shape parameter sub-model. The shape parameter sub-model can be used to quantify the shape parameters of the dynamic submarine cable under different working conditions, and then the initial shape parameters can be optimized based on the submarine cable parameter determination model. This can improve the parameter optimization efficiency, minimize material and energy consumption, reduce the redundancy and cost of dynamic submarine cables, and at the same time improve the dynamic response adaptability of dynamic submarine cables, providing a basis for the large-scale application of floating offshore wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0053] Figure 1 FIG2 is a schematic diagram of a method for determining dynamic submarine cable parameters provided by an embodiment of this specification;

[0054] Figure 2 Shown is a schematic diagram of a floating power generation unit provided in an embodiment of this specification;

[0055] Figure 3 Shown is a schematic diagram of a mooring layout provided in an embodiment of this specification;

[0056] Figure 4 FIG2 is a schematic diagram of a device for determining dynamic submarine cable parameters provided by an embodiment of this specification;

[0057] Figure 5 Shown is a schematic diagram of an electronic device provided in an embodiment of this specification. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0059] It should be noted that the user-related information and data involved in the embodiments of this specification are all information and data authorized by the user or fully authorized by relevant parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data comply with relevant laws, regulations and standards, do not violate public order and good morals, and provide corresponding operation entrances for users or relevant parties to choose to authorize or refuse.

[0060] It should also be noted that in the embodiments of this specification, certain software, components, models and other existing solutions in the industry may be mentioned. They should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that this application has or will necessarily use the solution.

[0061] Figure 1 Shown is a schematic diagram of a method for determining dynamic submarine cable parameters provided by an embodiment of this specification. Although this specification provides method operation steps or device structures as shown in the following embodiments or drawings, the method or device may include more or fewer operation steps or module units after partial merger based on routine or no creative labor. In the steps or structures where there is no necessary causal relationship logically, the execution order of these steps or the module structure of the device is not limited to the execution order or module structure shown in the embodiments or drawings of this specification. When the method or module structure is applied to an actual device, server or terminal product, it can be executed sequentially or in parallel according to the method or module structure shown in the embodiment or drawings (for example, in an environment of parallel processors or multi-threaded processing, or even in an implementation environment of distributed processing and server clusters). As Figure 1 As shown, the method may include:

[0062] S101: Acquire initial shape parameters of a dynamic submarine cable, wherein the initial shape parameters are determined based on collected historical environmental data of a target sea area and historical floating generator set data.

[0063] It is understood that the initial shape parameters of a dynamic submarine cable used in a floating generator set may include parameters related to the cable's shape. The shape of the dynamic submarine cable can be restricted by configuring at least one component on the cable, such as a counterweight or buoy. Specifically, the initial shape parameters can be obtained by processing the collected historical environmental data and historical floating generator set data using methods such as numerical simulation and artificial intelligence models.

[0064] In some embodiments of this specification, historical environmental data may include data of the target sea area within a certain time range. For example, it may include environmental data such as wind speed, wave height, flow direction, and flow velocity. Among them, wind speed can be recorded as U 10 , the effective wave height is recorded as H s , the zero-crossing period is recorded as T z , and the bottom current velocity is denoted as U c .

[0065] In some embodiments of the present specification, a floating generator may include a wind turbine, a floating foundation, a mooring system, and a dynamic submarine cable. Furthermore, historical floating generator data may include floating foundation parameter data, mooring data, and dynamic submarine cable parameter data. The floating foundation parameter data may include the size, weight, center of gravity position, motion response amplitude operator (RAOs), and longitudinal surge natural period (which may be denoted as T) of the floating foundation. The mooring data may include the length, diameter, material, minimum breaking load (MBL), and natural frequency (which may be denoted as f) of the mooring chain. n ), etc. The dynamic submarine cable parameter data may include the location data of the connection points of the dynamic submarine cable chock, the floating foundation, and the submarine cable. The location data may specifically include coordinate data, depth data, etc.

[0066] In some embodiments of this specification, a dynamic submarine cable may be configured with components such as counterweights and buoys. The positions of the counterweights and buoys, and the connection position of the dynamic submarine cable, are related to the shape of the dynamic submarine cable. Furthermore, the shape parameters of the dynamic submarine cable may include at least one of the following: dynamic submarine cable length, number of buoys, buoy positions, number of counterweights, counterweight positions, fairlead positions, mooring radius, and dynamic and static cable connection depth.

[0067] refer to Figure 2 As shown in some embodiments of this specification, the floating generator can be composed of four parts: an upper wind turbine 201, a floating foundation 202, a mooring system 203, and a dynamic submarine cable 204. A certain number of counterweights 205 and buoys 206 can be configured on the dynamic submarine cable 204. Figure 2It can be seen that the shape of the dynamic submarine cable can be adjusted by adjusting parameters such as the position and number of counterweights, the position and number of buoys, the length of the dynamic submarine cable, the position of the fairlead hole, the anchoring radius, and the connection depth of the dynamic and static cables.

[0068] S102: Constructing a submarine cable parameter determination model including a submarine cable length objective function and a shape parameter sub-model based on historical environmental data and historical floating generator set data, wherein the submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter sub-model is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set.

[0069] It is understood that the length objective function can be a function constructed based on the optimization objective of the dynamic submarine cable length determined based on actual application requirements. For example, to meet the objectives of minimizing cost and stress safety margin, the length objective function can be constructed based on the objectives of minimizing the cost per unit length and minimizing the bending stress of the dynamic submarine cable. It is understood that in other application scenarios, the length optimization objective of the dynamic submarine cable can be adjusted based on application requirements, and the length objective function constructed can be based on other objective functions, which is not limited in this specification.

[0070] In some embodiments of the present specification, the length objective function can be a single-objective optimization function, such as a function constructed with the goal of minimizing the unit length cost, or a multi-objective optimization function, such as a function constructed with the goals of minimizing the unit length cost and minimizing the bending stress. Furthermore, when the length objective function can be a multi-objective optimization function, the effects of different optimization objectives on length optimization can be different, and different weights can be set for different optimization objectives, thereby constructing a length objective function based on multiple optimization objectives and the weights corresponding to each optimization objective. The weights corresponding to different optimization objectives can be set based on specific application scenarios or application requirements.

[0071] S103: Optimizing the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters.

[0072] It can be understood that the initial shape parameters in step S101 are shape parameters that meet the design standards of offshore platforms in the target sea area and are determined based on historical environmental data and historical floating generator set data. However, the shape parameters are also affected by changes in the motion characteristic parameters of the floating generator set, and the initial shape parameters still have some redundant design, material waste, and high energy consumption. Therefore, the initial shape parameters can be optimized by constructing a submarine cable parameter determination model to reduce the redundancy and cost of the dynamic submarine cable while improving the dynamic response adaptability of the dynamic submarine cable. Specifically, when optimizing the initial shape parameters, the constructed length objective function can be used as the target, and the shape parameter sub-model that characterizes the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set is used as the constraint condition between the various shape parameters. The target shape parameters of the dynamic submarine cable are obtained by iterative optimization.

[0073] In the embodiments of this specification, historical environmental data and historical floating generator set data are used to drive the generation of initial shape parameters, and a submarine cable parameter determination model is constructed in combination with a preset length objective function, preset constraints, and a shape parameter sub-model. The shape parameter sub-model can be used to quantify the shape parameters of the dynamic submarine cable under different working conditions, and then the initial shape parameters are optimized based on the submarine cable parameter determination model. This can improve the parameter optimization efficiency, minimize material and energy consumption, reduce the redundancy and cost of the dynamic submarine cable, and at the same time improve the dynamic response adaptability of the dynamic submarine cable, thereby providing a basis for the large-scale application of floating offshore wind turbines.

[0074] It is understood that the methods described herein can be applied to electronic devices, which can refer to electronic devices capable of data calculation, processing, and storage. These electronic devices can be terminals such as PCs (personal computers), tablets, smartphones, wearable devices, and intelligent robots; they can also be servers. A server can be a standalone physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server providing cloud computing services.

[0075] In some embodiments of the present specification, obtaining the initial shape parameters of the dynamic submarine cable may include: obtaining the historical environmental data and the historical floating generator set data; determining the mooring type of the floating offshore wind turbine to which the dynamic submarine cable belongs based on the historical environmental data and the historical floating generator set data; and determining the initial shape parameters based on the mooring type, the historical environmental data, and the historical floating generator set data, in combination with preset economic objectives and operating condition control objectives.

[0076] It is understood that the mooring type can be the mooring parameters of the mooring chains in the mooring system. Mooring parameters may include the number of mooring chains, the mooring distribution parameters of the mooring chains relative to the floating foundation, and so on. Different mooring types may correspond to different operating condition control objectives. Furthermore, after determining the mooring type, initial shape parameters can be determined based on the mooring type, acquired historical data (including historical environmental data and historical floating generator set data), preset economic objectives, and operating condition control objectives. Specifically, when determining the initial shape parameters, the shape parameters that can maintain a stable linear shape for a dynamic submarine cable under non-operating condition control objectives and that can ensure continuous operation without breakage under operating condition control objectives can be used as the initial shape parameters.

[0077] refer to Figure 3 As shown, in some embodiments of this specification, the determined mooring type can be a 3x2 mooring layout, that is, using six mooring chains, with each mooring chain corresponding to the same location connected to the floating foundation. Any mooring chain is selected as mooring chain 1, and the mooring chains are numbered clockwise to obtain mooring chain 2, mooring chain 3, mooring chain 4, mooring chain 5, and mooring chain 6. The dynamic submarine cable can be connected to the floating foundation at a location that matches the connection point between mooring chain 1 and mooring chain 2. Furthermore, when wind and wave currents enter in the incident direction, the breakage of mooring chain 2 or 3 is the operating condition control target.

[0078] When determining the initial shape parameters, historical environmental data and historical floating generator set data can be analyzed to determine the data characteristics corresponding to each parameter, and the relationship between the operating condition control target and the shape parameters can be determined, thereby obtaining the initial shape parameters.

[0079] In some embodiments of this specification, the initial shape parameters may include at least the initial length of the dynamic submarine cable. The initial length of the dynamic submarine cable is related to the horizontal distance between the cable hole and the submarine cable connection point, and the vertical height difference between the chock and the submarine cable connection point. The horizontal distance and vertical height can be determined based on historical floating power generation unit data, and the initial length is then determined based on the relationship between the initial length, the horizontal distance, and the vertical height. Furthermore, the initial length of the dynamic submarine cable also needs to take into account its safety factor. The safety factor can be used as a weighting factor to weight the submarine cable length determined based on the horizontal distance and vertical height to obtain the initial length.

[0080] Specifically, the initial length can be determined by the following formula:

[0081] Formula (1)

[0082] Where L0 represents the initial length, K represents the safety factor of the dynamic submarine cable, S represents the horizontal distance between the chock and the submarine cable connection point, and H represents the vertical height difference between the chock and the submarine cable connection point. The horizontal distance and vertical height difference can be determined based on historical floating generator set data. For example, considering the movement of the floating foundation and the redundancy of the dynamic submarine cable, the safety factor of the dynamic submarine cable can range from 1.15 to 1.25.

[0083] In some embodiments of the present specification, the initial shape parameters may include at least a minimum curvature radius of the dynamic submarine cable. It is understood that, in order to better meet the offshore application requirements of floating power generation units, the dynamic submarine cable may be shaped like an S-type. The S-type dynamic submarine cable is curved. Due to changes in offshore working conditions, the degree of curvature of the S-type dynamic submarine cable may also change. To ensure the structural safety of the dynamic submarine cable, it is necessary to set a minimum arc radius, i.e., a minimum curvature radius, within which the dynamic submarine cable is allowed to bend during installation or operation to avoid permanent damage to internal components of the submarine cable.

[0084] Specifically, the minimum curvature radius can be determined by the following formula:

[0085] R min =Max(a1D,b1H S T Z 2 ) Formula (2)

[0086] Among them, R min may represent the minimum curvature radius, D may represent the outer diameter of the dynamic submarine cable, and H S It can represent the effective wave height of the target sea area, T Z The zero-crossing period can represent the target sea area, a1 and b1 can represent preset coefficients, and the significant wave height and the zero-crossing period can be determined based on the historical environmental data. The zero-crossing period can be the average time interval for the wave surface of the seawater to pass through the zero point, which can reflect the time scale of the waves.

[0087] It is understood that in actual use, dynamic submarine cables will move with the movement of the floating foundation and the flow of seawater. During this process, the outer diameter of the dynamic submarine cable and the energy contained in the seawater will affect the structural safety of the dynamic submarine cable. The energy contained in the seawater is related to the effective wave height and the zero-crossing period of the seawater, specifically the product of the effective wave height and the square of the zero-crossing period. This product can be used to quantify the destructive capacity of waves to dynamic submarine cables. Furthermore, the outer diameter of the dynamic submarine cable and the energy contained in the seawater have different impacts on the structural safety of the dynamic submarine cable. Different coefficients can be set, namely a1 and b1, and the maximum of the two is selected as the minimum curvature radius of the dynamic submarine cable.

[0088] In some embodiments of this specification, the preset coefficients a1 and b1 in formula (2) above can be determined by analyzing historical environmental data and combining them with the mooring type. For example, a1 and b1 can be 15 and 0.3, respectively. It is understood that when the historical environmental data and / or the mooring type change, the values ​​of a1 and b1 can also be adjusted accordingly.

[0089] In some embodiments of the present specification, the initial shape parameters may also include at least the span length of the dynamic submarine cable. The span length can characterize the length of the overhead section of the submarine cable that does not contact the seabed, and is a core parameter that affects its fatigue life, hydrodynamic stability, and structural safety. The span length is specifically related to the minimum radius of curvature, the height of the fairlead hole, and the height of the seabed. The height of the fairlead hole and the height of the seabed can then be determined by analyzing historical environmental data and historical floating generator set data, and the span length of the dynamic submarine cable can be determined based on the determined minimum radius of curvature, the height of the fairlead hole, and the height of the seabed. Specifically, the span length of the dynamic submarine cable can be determined by the following formula:

[0090] Formula (3)

[0091] Among them, L span may represent the span length, z0 may represent the fairlead hole height, z1 may represent the seabed height, and c may represent a preset coefficient. For example, the value of c may be 2.5.

[0092] In some embodiments of the present specification, the span length, minimum radius of curvature, and initial length of a dynamic submarine cable can be used to characterize the shape of the dynamic submarine cable, and the shape of the dynamic submarine cable can be controlled by the number and position of the counterweights and buoys provided on the submarine cable body. Therefore, after determining the span length, minimum radius of curvature, and initial length, the initial position and initial number of the counterweights, as well as the initial position and initial number of the buoys, can be determined as the initial shape parameters of the dynamic submarine cable based on the relationship between the span length, minimum radius of curvature, and initial length and the position and number of the counterweights and buoys. Alternatively, the span length, minimum radius of curvature, and initial length can be directly used as the initial shape parameters, and this specification does not impose any restrictions on this.

[0093] In some embodiments of this specification, after obtaining the initial shape parameters using the aforementioned formula, the initial shape parameters may be evaluated based on thresholds corresponding to preset evaluation indicators to determine whether the initial shape parameters meet preset evaluation requirements. For example, the preset evaluation indicators may include dynamic bending radius, fatigue damage accumulation, and price per unit length.

[0094] Furthermore, each preset evaluation indicator can be determined by the following formula:

[0095] C 平均 =(C cable + C buoy + C sinker ) / L0 formula (4)

[0096] Among them, C 平均 It can be expressed as the average unit length cost of dynamic submarine cable, C cable It can represent the cost of the dynamic submarine cable, C buoy Can represent the buoy cost, C sinker It can represent the cost of the counterweight block, L0 can represent the length of the dynamic submarine cable, and accordingly, the maximum unit price C of the dynamic submarine cable can be set. max As the indicator threshold corresponding to the price per unit length.

[0097] Formula (5)

[0098] Among them, D total Can represent fatigue damage accumulation, n i It can represent the number of stress amplitude cycles in the load history, N i It can represent the fatigue life of the dynamic submarine cable under the i-th stress amplitude level. Accordingly, the maximum fatigue damage accumulation value of the dynamic submarine cable can be set as the indicator threshold corresponding to the fatigue damage accumulation.

[0099] Dynamic bending radius R actual The corresponding indicator threshold may be 12D.

[0100] Furthermore, if the initial shape parameters meet the threshold corresponding to the preset evaluation indicator, step S103 is executed. Otherwise, this can be achieved by adjusting the first connection position of the dynamic submarine cable and the height of the floating foundation from the seabed. The first connection position of the dynamic submarine cable and the height of the floating foundation from the seabed can be characterized by parameters such as the position of the fairlead hole, the length of the mooring chain, the anchor radius, and the connection position of the dynamic and static cables. Then, step S103 can be executed after determining that the index value of the adjusted preset evaluation indicator meets the threshold.

[0101] Specifically, the adjustment range and adjustment priority corresponding to each parameter can be set, and iterative adjustment can be performed based on the adjustment range and adjustment priority. The index value corresponding to the preset evaluation index after each adjustment is calculated. After determining that the index value of each preset evaluation index meets the index threshold, the adjustment can be stopped and the subsequent step S103 can be executed. Exemplarily, the adjustment priority of the parameters can be, from high to low, the following: the fairlead position, the mooring radius, and the dynamic and static cable connection position. The adjustment range △x of the fairlead position can be △x ≥ 2m, the adjustment range of the mooring radius can be ±10%, and the adjustment range △z of the dynamic and static cable connection position can be △z ≤ 1m.

[0102] In some embodiments of the present specification, the shape parameter sub-model may include at least a buoy position sub-model, and the buoy position sub-model may be constructed in the following manner: based on the historical environmental data and the historical floating generator set data, determining that the motion characteristic parameters of the floating generator set that affect the buoy position include at least the motion amplitude parameters of the floating foundation and the bending flexibility parameters of the dynamic submarine cable; determining the correlation between the motion amplitude parameters, the bending flexibility parameters and the length of the dynamic submarine cable, and constructing the buoy position sub-model.

[0103] It can be understood that the motion amplitude parameter of the floating foundation can represent the extent to which the motion of the floating foundation affects the geometric configuration and stress state of the submarine cable. Specifically, the motion amplitude parameter can be represented by the typical motion amplitude of the floating foundation in the longitudinal direction (which can be represented by the root mean square value) relative to the entire length of the dynamic submarine cable, that is, the ratio of the root mean square displacement of the longitudinal motion of the floating foundation to the extent of the dynamic submarine cable. A larger ratio indicates that the horizontal motion of the floating foundation is more significant relative to the total length of the submarine cable, that is, the more severe the motion of the floating foundation has on the geometric configuration and stress state of the submarine cable. A smaller ratio indicates that the motion of the floating foundation is relatively mild relative to the length of the submarine cable, and the submarine cable has more "buffer" space to accommodate the motion of the floating foundation, resulting in relatively gentle changes in its configuration and stress state. This ratio is related to the curvature change of the dynamic submarine cable, and the curvature of the dynamic submarine cable is related to the position of the buoy. Therefore, the distance of the buoy from the fairlead of the dynamic submarine cable can be determined based on the ratio.

[0104] It can be understood that the bending flexibility parameter can characterize the bending characteristics of a dynamic submarine cable, that is, whether the dynamic cable is relatively flexible or relatively rigid. Specifically, the bending flexibility parameter can be expressed as the ratio of the minimum bending radius that the cable can withstand without incurring damage (such as sheath rupture, fiber breakage, and conductor fatigue) to the length of the dynamic cable. A smaller ratio indicates that the cable is very flexible, easier to bend into smaller curvatures during installation and operation, and more adaptable to geometric changes (especially in dynamic environments). A larger ratio indicates that the cable is relatively rigid, requiring more space or more gentle bends to avoid damage. It is more sensitive to bending and is more likely to approach or exceed its bending limit during complex configurations or intense movement.

[0105] Furthermore, considering that the buoy is mainly used to control the curvature of the upper arch section of the S-shaped dynamic submarine cable, a buoy position sub-model can be constructed based on the motion amplitude parameters that characterize the influence of the movement of the floating foundation on the geometric configuration and stress state of the submarine cable, the bending characteristics that characterize the dynamic submarine cable, and the length of the dynamic submarine cable.

[0106] In some embodiments of this specification, the importance of the motion amplitude parameter and the bending flexibility parameter to the buoy position varies. Different weights can be assigned to these parameters to construct a buoy position submodel. The weights assigned to these parameters can be determined by analyzing historical environmental data and historical floating generator set data.

[0107] In some embodiments of this specification, the buoy position submodel can be expressed by the following formula:

[0108] λ=a2·(X rms surge / L)+b2·(R min / L) Formula (6)

[0109] L1=λ·L Formula (7)

[0110] Wherein, L1 can represent the distance between the buoy and the fairlead of the dynamic submarine cable, and L can represent the length of the dynamic submarine cable; X rms surge It can be used to express the root mean square displacement of the longitudinal motion of the floating foundation, R min It can represent the minimum curvature radius of the dynamic submarine cable, a2 and b2 are preset coefficients. For example, the values ​​of a2 and b2 can be 0.35 and 0.15 respectively, and the value range of λ can be 0.3~0.5.

[0111] In some embodiments of the present specification, the shape parameter submodel may include at least a counterweight position submodel, and the counterweight position submodel may be constructed in the following manner: based on the historical environmental data and the historical floating generator set data, determining that the motion characteristic parameters of the floating generator set that affect the counterweight position include at least the motion amplitude parameters of the floating foundation, the bending flexibility parameters of the dynamic submarine cable, and the resonance characteristic parameters between the ocean current and the mooring chain; determining the correlation between the motion amplitude parameters, the bending flexibility parameters, the resonance characteristic parameters, and the length of the dynamic submarine cable, and constructing the counterweight position submodel.

[0112] It can be understood that the resonance characteristic parameter can represent the sensitivity of the ocean current excitation intensity to the resonance between the mooring and the dynamic submarine cable. Based on this resonance characteristic parameter, it can be determined whether the ocean current is sufficient to excite resonance between the dynamic submarine cable and the mooring chain, as well as the resonance probability, resonance intensity, and other information. The larger the ratio, the stronger the resonance between the dynamic submarine cable and the mooring chain, and the greater the stress. Furthermore, based on this resonance characteristic parameter, the safety margin of the resonance between the dynamic submarine cable and the mooring chain can be quantified to determine whether the submarine cable is at risk of failure.

[0113] Furthermore, considering that the counterweight is mainly used to suppress span vibration and provide negative buoyancy, as well as the influence of interference between the dynamic submarine cable and the mooring chain on the dynamic submarine cable, a counterweight position sub-model can be constructed based on the motion amplitude parameters that characterize the influence of the movement of the floating foundation on the geometric configuration and stress state of the submarine cable, the bending characteristics of the dynamic submarine cable, the resonance characteristic parameters that characterize the resonance sensitivity of the current excitation intensity relative to the mooring and the dynamic submarine cable, and the length of the dynamic submarine cable.

[0114] In some embodiments of this specification, the counterweight position submodel can be expressed by the following formula:

[0115] δ=(a2·(X rms surge / L)+b2·(R min / L))·(1-U c / f n D) Formula (8)

[0116] L2=δ·L Formula (9)

[0117] Wherein, L2 can represent the distance between the counterweight block and the fairlead hole of the dynamic submarine cable, and L can represent the length of the dynamic submarine cable; X rms surge It can be used to express the root mean square displacement of the longitudinal motion of the floating foundation, R min It can represent the minimum curvature radius of the dynamic submarine cable; U c It can represent the bottom current velocity of the target sea area, f n It can represent the natural frequency of the mooring chain, and D can represent the outer diameter of the dynamic submarine cable. rms surge / L)+b2·(R min / L) can be represented by λ. Exemplarily, the value range of δ can be 0.15λ~0.3λ.

[0118] In some embodiments of this specification, the submarine cable length objective function may be expressed by the following formula:

[0119] Formula (10)

[0120] Among them, F(L) represents the cable length objective function, C(L) can represent the unit length cost corresponding to the target length of the dynamic submarine cable, C0 can represent the benchmark cost, σ max (L) can represent the maximum bending stress corresponding to the target length of the dynamic submarine cable, σ allow It can represent the stress safety margin of the dynamic submarine cable, α and β can represent weight coefficients, and the sum of α and β is 1.

[0121] It can be understood that the cable length objective function aims to minimize the unit length cost and the maximum bending stress, and the cost term (i.e. C(L) / C0) and the bending stress term (σ max (L) / σ allow Different weights can be used based on at least one of the following factors: the environmental characteristics of the sea area, the characteristics of the floating turbine, and the application requirements, to better suit the application scenario in the target sea area. For example, the weights α and β corresponding to the cost and bending stress terms can be 0.7 and 0.3, respectively.

[0122] In some embodiments of the present specification, when optimizing the initial shape parameters, the formula (6) to the formula (10) can be combined to determine the position of the buoy and the position of the counterweight to determine the shape of the dynamic submarine cable while optimizing the length of the dynamic submarine cable. Specifically, during the initial optimization, the length L of the dynamic submarine cable in the formula (7) and the formula (9) can be the initial length, for example, the initial length L0 calculated based on the formula (1) above, and then the initial positions L1 and L2 of the buoy and the counterweight are calculated. The initial positions of the buoy and the counterweight, the initial length of the dynamic submarine cable, etc. can be used as some parameters in the initial shape parameters and substituted into the formula (10) to calculate the cable length objective function F(L). Based on the calculation results, the shape parameters of the dynamic submarine cable are iteratively adjusted until the cable length objective function F(L) is minimized, and the corresponding shape parameters are obtained as the target shape parameters.

[0123] In some embodiments of the present specification, after optimizing the initial shape parameters based on the submarine cable parameter determination model, it may also include: determining the index values ​​corresponding to each preset evaluation index of the dynamic submarine cable based on the target shape parameters, the preset evaluation indicators including at least the unit cost, fatigue damage accumulation index, and dynamic bending radius of the dynamic submarine cable; determining the index evaluation results corresponding to the target shape parameters based on the index values ​​corresponding to each preset evaluation index and the index thresholds corresponding to each preset evaluation index.

[0124] It is understood that multiple evaluation indicators can be preset based on the economic and operating requirements of the dynamic submarine cable. After optimizing the initial shape parameters of the dynamic submarine cable based on the submarine cable parameter determination model, the index values ​​of the preset evaluation indicators under the optimized shape parameters can be calculated, and whether the shape parameters of the optimized dynamic submarine cable meet the economic and operating requirements can be determined by determining whether the calculated index values ​​meet the index thresholds. If the index values ​​meet the index thresholds, the optimized shape parameters can be determined as target shape parameters; otherwise, the optimized shape parameters can be adjusted based on a pre-set adjustment method to obtain the target shape parameters, or the initial shape parameters can be used as the target shape parameters.

[0125] Furthermore, the average unit length cost C of the dynamic submarine cable 平均 It can be determined by the following formula: C 平均 =(C cable +C buoy + C sinker ) / L0, where, represents, C cable It can represent the cost of the dynamic submarine cable, C buoy Can represent the buoy cost, C sinker It can represent the cost of the counterweight block, L0 can represent the length of the dynamic submarine cable, and accordingly, the maximum unit price C of the dynamic submarine cable can be set. max As the indicator threshold corresponding to the price per unit length.

[0126] Fatigue damage accumulation index D total It can be determined by the following formula: , where n i It can represent the number of stress amplitude cycles in the load history, N i It can represent the fatigue life of the dynamic submarine cable under the i-th stress amplitude level. Accordingly, the maximum fatigue damage accumulation value of the dynamic submarine cable can be set as the indicator threshold corresponding to the fatigue damage accumulation.

[0127] Dynamic bending radius R actual The corresponding indicator threshold may be 12D.

[0128] In some embodiments of this specification, after determining the index evaluation result corresponding to the target shape parameter, the following steps may also be included:

[0129] When the indicator value corresponding to any preset evaluation indicator does not meet the corresponding indicator threshold, the target shape parameter is adjusted based on the relationship between the indicator value corresponding to the preset evaluation indicator and the indicator threshold corresponding to the preset evaluation indicator, and the correlation between the preset evaluation indicator and the shape parameter of the dynamic submarine cable.

[0130] Specifically, the relationship between the index value corresponding to the preset evaluation index and the index threshold corresponding to the preset evaluation index may include the adjustment amplitude and adjustment priority corresponding to each shape parameter, and iterative adjustment is performed based on the adjustment amplitude and adjustment priority, and the index value corresponding to the preset evaluation index after each adjustment is calculated. After determining that the index value of each preset evaluation index meets the index threshold, the adjustment may be stopped. Exemplarily, the adjustment priority of the parameters may be, from high to low, the fairlead position, the mooring radius, and the dynamic and static cable connection position. The adjustment amplitude △x of the fairlead position may be △x ≥ 2m, the adjustment amplitude of the mooring radius may be ±10%, and the adjustment amplitude △z of the dynamic and static cable connection position may be △z ≤ 1m.

[0131] In the embodiments of this specification, by optimizing the length of the dynamic submarine cable, the number and position of the buoys, and the number and position of the counterweights, the safety and reliability of the dynamic submarine cable under the controlled working conditions of the floating foundation are ensured, while at the same time, no interference with the mooring chain occurs, thereby achieving the purpose of cost saving.

[0132] Based on the method for determining dynamic submarine cable parameters described above, one or more embodiments of this specification also provide a device for determining dynamic submarine cable parameters. The device may include an apparatus (including a distributed system), software (application), modules, plug-ins, servers, clients, etc., using the methods described in the embodiments of this specification, combined with the necessary implementation hardware. Based on the same innovative concept, the devices in one or more embodiments provided in this specification are described in the following embodiments. Because the implementation solutions to the problems solved by the devices are similar to the methods, the specific implementation of the devices in the embodiments of this specification can refer to the implementation of the aforementioned methods, and any repetitions will not be repeated. As used below, the terms "unit" or "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated. Figure 4 FIG. 1 is a schematic diagram of a device for determining dynamic submarine cable parameters provided by an embodiment of this specification. Figure 4 As shown, the dynamic submarine cable parameter determination device 400 may include:

[0133] An acquisition module 401 is configured to acquire initial shape parameters of the dynamic submarine cable, wherein the initial shape parameters are determined based on historical environmental data of the target sea area and historical floating generator set data collected;

[0134] A construction module 402 is configured to construct a submarine cable parameter determination model including a submarine cable length objective function and a shape parameter sub-model based on historical environmental data and historical floating generator set data, wherein the submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter sub-model is configured to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set;

[0135] The optimization module 403 is configured to optimize the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters.

[0136] In some embodiments of the present specification, the acquisition module 401 is specifically used to: acquire the historical environmental data and the historical floating generator set data; determine the mooring type of the floating offshore wind turbine to which the dynamic submarine cable belongs based on the historical environmental data and the historical floating generator set data; determine the initial shape parameters based on the mooring type, the historical environmental data and the historical floating generator set data, in combination with preset economic goals and operating condition control goals.

[0137] In some embodiments of this specification, the initial shape parameter may include at least an initial length of the dynamic submarine cable, and the initial length may be determined by the following formula:

[0138] ;

[0139] Among them, L0 can represent the initial length, K can represent the safety factor of the dynamic submarine cable, S can represent the horizontal distance between the fairlead hole and the connection point of the submarine cable, and H can represent the vertical height difference between the fairlead hole and the connection point of the submarine cable. The horizontal distance and the vertical height difference can be determined based on historical floating power generation unit data.

[0140] In some embodiments of this specification, the initial shape parameter may include at least a minimum curvature radius of the dynamic submarine cable, and the minimum curvature radius may be determined by the following formula:

[0141] R min =Max(a1D,b1H S T Z 2 );

[0142] Among them, R min may represent the minimum curvature radius, D may represent the outer diameter of the dynamic submarine cable, and H S It can represent the effective wave height of the target sea area, T Z may represent the zero-crossing period of the target sea area, a1 and b1 may represent preset coefficients, and the significant wave height and the zero-crossing period may be determined based on the historical environmental data.

[0143] In some embodiments of this specification, the shape parameter sub-model may include at least the buoy position sub-model, and the buoy position sub-model may be constructed in the following manner:

[0144] Based on the historical environmental data and the historical floating generator set data, determining motion characteristic parameters of the floating generator set that affect the position of the buoy, including at least a motion amplitude parameter of the floating foundation and a bending flexibility parameter of the dynamic submarine cable;

[0145] The correlation between the motion amplitude parameter, the bending flexibility parameter and the length of the dynamic submarine cable is determined, and the buoy position sub-model is constructed.

[0146] In some embodiments of this specification, the buoy position submodel can be expressed by the following formula:

[0147] λ=a2·(X rms surge / L)+b2·(R min / L);

[0148] L1=λ·L;

[0149] Wherein, L1 can represent the distance between the buoy and the fairlead of the dynamic submarine cable, and L can represent the length of the dynamic submarine cable; X rms surge It can be used to express the root mean square displacement of the longitudinal motion of the floating foundation, R min It can represent the minimum curvature radius of a dynamic submarine cable.

[0150] In some embodiments of this specification, the shape parameter sub-model may include at least the counterweight position sub-model, and the counterweight position sub-model may be constructed in the following manner:

[0151] Based on the historical environmental data and the historical floating generator set data, determining the motion characteristic parameters of the floating generator set that affect the position of the counterweight block, including at least the motion amplitude parameters of the floating foundation, the bending flexibility parameters of the dynamic submarine cable, and the resonance characteristic parameters between the ocean current and the mooring chain;

[0152] The correlation between the motion amplitude parameter, the bending flexibility parameter, the resonance characteristic parameter and the length of the dynamic submarine cable is determined, and the counterweight position sub-model is constructed.

[0153] In some embodiments of this specification, the counterweight position submodel can be expressed by the following formula:

[0154] δ=(a2·(X rms surge / L)+b2·(R min / L))·(1-U c / f n D);

[0155] L2=δ·L;

[0156] Wherein, L2 can represent the distance between the counterweight block and the fairlead hole of the dynamic submarine cable, and L can represent the length of the dynamic submarine cable; X rms surge It can be used to express the root mean square displacement of the longitudinal motion of the floating foundation, R minIt can represent the minimum curvature radius of the dynamic submarine cable; U c It can represent the bottom current velocity of the target sea area, f n It can represent the natural frequency of the mooring chain, and D can represent the outer diameter of the dynamic submarine cable.

[0157] In some embodiments of this specification, the submarine cable length objective function may be expressed by the following formula:

[0158] ;

[0159] Among them, F(L) represents the cable length objective function, C(L) can represent the unit length cost corresponding to the target length of the dynamic submarine cable, C0 can represent the benchmark cost, σ max (L) can represent the maximum bending stress corresponding to the target length of the dynamic submarine cable, σ allow It can represent the stress safety margin of the dynamic submarine cable, and α and β can represent weight coefficients.

[0160] In some embodiments of the present specification, the above-mentioned device may further include an adjustment module, which is used to: determine the index values ​​corresponding to each preset evaluation index of the dynamic submarine cable based on the target shape parameters, and the preset evaluation indicators include at least the unit cost, fatigue damage accumulation index, and dynamic bending radius of the dynamic submarine cable; based on the index values ​​corresponding to each preset evaluation index and the index thresholds corresponding to each preset evaluation index, determine the index evaluation results corresponding to the target shape parameters.

[0161] In some embodiments of the present specification, the adjustment module can also be used to: when the indicator value corresponding to any preset evaluation indicator does not meet the corresponding indicator threshold, based on the relationship between the indicator value corresponding to the preset evaluation indicator and the indicator threshold corresponding to the preset evaluation indicator, and the association relationship between the preset evaluation indicator and the shape parameter of the dynamic submarine cable, adjust the target shape parameter.

[0162] The description and functions of the above modules can be understood by referring to the content of the method for determining dynamic submarine cable parameters, which will not be repeated here.

[0163] The present application also provides an electronic device, such as Figure 5 As shown, the electronic device may include a processor 501 and a memory 502, wherein the processor 501 and the memory 502 may be connected via a bus or other means. Figure 5 The bus connection is taken as an example.

[0164] The processor 501 may be a central processing unit (CPU). The processor 501 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of these chips.

[0165] The memory 502 is a non-transitory computer-readable storage medium that can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as the program instructions / modules corresponding to the method for determining dynamic submarine cable parameters in the embodiment of the present invention (for example, Figure 4 The processor 501 executes various functional applications and data processing of the processor by running the non-transient software programs, instructions, and modules stored in the memory 502, that is, implements the method for determining dynamic submarine cable parameters in the above method embodiment.

[0166] The memory 502 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created by the processor 501, etc. In addition, the memory 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 502 may optionally include a memory remotely located relative to the processor 501, and these remote memories may be connected to the processor 501 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0167] The one or more modules are stored in the memory 502, and when executed by the processor 501, perform the following method for determining dynamic submarine cable parameters:

[0168] Initial shape parameters of a dynamic submarine cable are obtained, where the initial shape parameters are determined based on historical environmental data and historical floating generator set data collected from a target sea area. A submarine cable parameter determination model is constructed based on the historical environmental data and the historical floating generator set data, including a submarine cable length objective function and a shape parameter sub-model. The submarine cable parameter determination model includes a preset length objective function and preset constraints, and the shape parameter sub-model is used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set. The initial shape parameters are optimized based on the submarine cable parameter determination model to obtain target shape parameters.

[0169] The specific details of the above electronic device can be understood by referring to the corresponding descriptions and effects in the above method embodiments, and will not be repeated here.

[0170] This specification also provides a computer storage medium, wherein the computer storage medium stores computer program instructions, and when the computer program instructions are executed, the steps of the method for determining dynamic submarine cable parameters are implemented.

[0171] This specification also provides a computer program product, which includes a computer program. When the computer program is executed, the steps of the method for determining the fracturing operation parameters are implemented.

[0172] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD). The storage medium can also include a combination of the above-mentioned types of memory.

[0173] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0174] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions.

[0175] For the convenience of description, the above devices are described as being divided into various units according to their functions. Of course, when implementing this application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0176] From the above description of the embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general-purpose hardware platform. Based on this understanding, the technical solution of the present application, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute certain parts of the methods of various embodiments of the present application.

[0177] The present application can be used in a wide variety of general-purpose or specialized computer system environments or configurations, such as personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments that include any of the above.

[0178] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communications network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0179] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Those skilled in the art will readily appreciate that various modifications and variations to the embodiments of this specification are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this specification shall be within the scope of protection of this specification.

Claims

1. A method for determining dynamic submarine cable parameters, characterized in that: The method comprises: Acquiring initial shape parameters of the dynamic submarine cable, wherein the initial shape parameters are determined based on collected historical environmental data of the target sea area and historical floating generator set data; Constructing a submarine cable parameter determination model based on historical environmental data and historical floating generator set data, the submarine cable parameter determination model including a submarine cable length objective function and constraints, the constraints including a shape parameter sub-model, the shape parameter sub-model being used to characterize the correlation between the shape parameters of the dynamic submarine cable and the motion characteristic parameters of the floating generator set; Optimizing the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters; The shape parameter sub-model includes at least a buoy position sub-model and a counterweight position sub-model; The buoy position submodel is constructed in the following way: Based on the historical environmental data and the historical floating generator set data, determining motion characteristic parameters of the floating generator set that affect the position of the buoy, including at least a motion amplitude parameter of the floating foundation and a bending flexibility parameter of the dynamic submarine cable; Determining a correlation between the motion amplitude parameter, the bending flexibility parameter, and the length of the dynamic submarine cable, and constructing the buoy position sub-model; The counterweight position submodel is constructed in the following way: Based on the historical environmental data and the historical floating generator set data, determining the motion characteristic parameters of the floating generator set that affect the position of the counterweight block, including at least the motion amplitude parameters of the floating foundation, the bending flexibility parameters of the dynamic submarine cable, and the resonance characteristic parameters between the ocean current and the mooring chain; Determining a correlation between the motion amplitude parameter, the bending flexibility parameter, the resonance characteristic parameter, and the length of the dynamic submarine cable, and constructing the counterweight position sub-model; The submarine cable length objective function is expressed by the following formula: ； Where F(L) represents the cable length objective function, C(L) represents the unit length cost corresponding to the target length of the dynamic submarine cable, C0 represents the benchmark cost, σ max (L) represents the maximum bending stress corresponding to the target length of the dynamic submarine cable, σ allow It represents the stress safety margin of the dynamic submarine cable, and α and β represent weight coefficients.

2. The method for determining dynamic submarine cable parameters according to claim 1, wherein: The shape parameters of the dynamic submarine cable include at least one of the following: dynamic submarine cable length, number of buoys, buoy positions, number of counterweights, counterweight positions, fairlead hole positions, mooring radius, and dynamic and static cable connection depth.

3. The method for determining dynamic submarine cable parameters according to claim 1, wherein: Obtain the initial shape parameters of the dynamic submarine cable, including: Acquiring the historical environmental data and the historical floating power generation unit data; Determining a mooring type of a floating offshore wind turbine to which the dynamic submarine cable belongs based on the historical environmental data and the historical floating turbine data; The initial shape parameters are determined based on the mooring type, the historical environmental data, and the historical floating power generation unit data, in combination with preset economic objectives and operating condition control objectives.

4. The method for determining dynamic submarine cable parameters according to claim 3, wherein: The initial shape parameters include at least an initial length of the dynamic submarine cable, and the initial length is determined by the following formula: ； Wherein, L0 represents the initial length, K represents the safety factor of the dynamic submarine cable, S represents the horizontal distance between the chock and the connection point of the submarine cable, and H represents the vertical height difference between the chock and the connection point of the submarine cable. The horizontal distance and the vertical height difference are determined based on historical floating generator set data.

5. The method for determining dynamic submarine cable parameters according to claim 3, wherein: The initial shape parameters include at least the minimum curvature radius of the dynamic submarine cable, and the minimum curvature radius is determined by the following formula: R min =Max(a1D,b1H S T Z 2 ); Among them, R min represents the minimum curvature radius, D represents the outer diameter of the dynamic submarine cable, H S represents the effective wave height of the target sea area, T Z represents the zero-crossing period of the target sea area, a1 and b1 represent preset coefficients, and the significant wave height and the zero-crossing period are determined based on the historical environmental data.

6. The method for determining dynamic submarine cable parameters according to claim 1, wherein: The buoy position submodel is expressed by the following formula: λ=a2·(X rms surge / L)+b2·(R min / L); L1=λ·L; Wherein, L1 represents the distance between the buoy and the fairlead of the dynamic submarine cable, L represents the length of the dynamic submarine cable; X rms surge R represents the root mean square displacement of the longitudinal motion of the floating foundation, min It represents the minimum curvature radius of the dynamic submarine cable, and a2 and b2 represent the preset coefficients.

7. The method for determining dynamic submarine cable parameters according to claim 1, wherein: The counterweight position submodel is expressed by the following formula: δ=(a2·(X rms surge / L)+b2·(R min / L))·(1-U c / f n D); L2=δ·L; Wherein, L2 represents the distance between the counterweight block and the fairlead hole of the dynamic submarine cable, L represents the length of the dynamic submarine cable; X rms surge R represents the root mean square displacement of the longitudinal motion of the floating foundation, min Indicates the minimum curvature radius of the dynamic submarine cable; U c represents the bottom current velocity of the target sea area, f n represents the natural frequency of the mooring chain, D represents the outer diameter of the dynamic submarine cable, and a2 and b2 represent the preset coefficients.

8. The method for determining dynamic submarine cable parameters according to claim 1, wherein: After optimizing the initial shape parameters based on the submarine cable parameter determination model, the method further includes: Determining index values ​​corresponding to preset evaluation indicators of the dynamic submarine cable based on the target shape parameters, wherein the preset evaluation indicators include at least a unit cost, a fatigue damage accumulation index, and a dynamic bending radius of the dynamic submarine cable; Based on the indicator value corresponding to each preset evaluation indicator and the indicator threshold corresponding to each preset evaluation indicator, the indicator evaluation result corresponding to the target shape parameter is determined.

9. The method for determining dynamic submarine cable parameters according to claim 8, characterized in that: After determining the index evaluation results corresponding to the target shape parameters, the method further includes: When the indicator value corresponding to any preset evaluation indicator does not meet the corresponding indicator threshold, the target shape parameter is adjusted based on the relationship between the indicator value corresponding to the preset evaluation indicator and the indicator threshold corresponding to the preset evaluation indicator, and the correlation between the preset evaluation indicator and the shape parameter of the dynamic submarine cable.

10. A device for determining dynamic submarine cable parameters, characterized in that: include: An acquisition module is used to acquire initial shape parameters of the dynamic submarine cable, wherein the initial shape parameters are determined based on the collected historical environmental data of the target sea area and historical floating generator set data; a construction module for constructing a submarine cable parameter determination model based on historical environmental data and historical floating generator set data, the submarine cable parameter determination model including a submarine cable length objective function and constraints, the constraints including a shape parameter sub-model for characterizing the correlation between shape parameters of the dynamic submarine cable and motion characteristic parameters of the floating generator set; an optimization module, configured to optimize the initial shape parameters based on the submarine cable parameter determination model to obtain target shape parameters; The shape parameter sub-model includes at least a buoy position sub-model and a counterweight position sub-model; The buoy position submodel is constructed in the following way: Based on the historical environmental data and the historical floating generator set data, determining motion characteristic parameters of the floating generator set that affect the position of the buoy, including at least a motion amplitude parameter of the floating foundation and a bending flexibility parameter of the dynamic submarine cable; Determining a correlation between the motion amplitude parameter, the bending flexibility parameter, and the length of the dynamic submarine cable, and constructing the buoy position sub-model; The counterweight position submodel is constructed in the following way: Based on the historical environmental data and the historical floating generator set data, determining the motion characteristic parameters of the floating generator set that affect the position of the counterweight block, including at least the motion amplitude parameters of the floating foundation, the bending flexibility parameters of the dynamic submarine cable, and the resonance characteristic parameters between the ocean current and the mooring chain; Determining a correlation between the motion amplitude parameter, the bending flexibility parameter, the resonance characteristic parameter, and the length of the dynamic submarine cable, and constructing the counterweight position sub-model; The submarine cable length objective function is expressed by the following formula: ； Where F(L) represents the cable length objective function, C(L) represents the unit length cost corresponding to the target length of the dynamic submarine cable, C0 represents the benchmark cost, σ max (L) represents the maximum bending stress corresponding to the target length of the dynamic submarine cable, σ allow It represents the stress safety margin of the dynamic submarine cable, and α and β represent weight coefficients.

11. An electronic device, characterized in that: include: A memory and a processor, wherein the processor and the memory are communicatively connected to each other, the memory stores computer instructions, and the processor implements the steps of the method according to any one of claims 1 to 9 by executing the computer instructions.

12. A computer storage medium, characterized in that The computer storage medium stores computer program instructions, and when the computer program instructions are executed, the steps of the method according to any one of claims 1 to 9 are implemented.

13. A computer program product, characterized in that The invention comprises a computer program, which implements the steps of the method according to any one of claims 1 to 9 when the computer program is executed by a processor.

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