Coil-intruding high-performance insulator layered optimization design method and device

Abstract

The application relates to a coil invasion type high-performance insulator layered optimization design method and device, belongs to the technical field of insulators, and takes the magnetic flux density, electric erosion depth and hardness of a single-piece insulator as optimization targets, establishes a bottom-layer optimization model of material characteristics to determine insulating materials; takes the breakdown strength, breakdown voltage and tensile strength of the whole insulator as optimization targets, establishes a middle-layer optimization model of a shed structure to determine the shed structure; and takes the output power and efficiency of the insulator as optimization targets, establishes a top-layer optimization model of a coil structure to determine the coil structure; by changing or improving the insulating materials, changing the shed structure and coil structure parameters, and by using finite element numerical analysis means and intelligent algorithms, a parameter combination satisfying the requirements of the mechanical and electrical characteristics and energy transmission performance of the insulator is found, so that the high-performance work of the insulator is ensured.

Description

Technical Field

[0001] This application relates to the fields of insulator structure design and wireless power transmission technology, and in particular to a coil-intrusive high-performance insulator layered optimization design method and device. Background Technology

[0002] As the main insulating components of electrical equipment in transmission lines and power plants, insulators need to withstand mechanical and electrical loads. Their structural design objectives mainly include voltage equalization design, lightning protection design, pollution / wet flashover protection, UV / acid / alkali resistance, resistance to tracking and corrosion, bird pecking resistance, tensile / tear resistance, hydrophobicity, and resistance to extreme temperatures. This requires comprehensive design of the sheds, core rods, metal fittings, and voltage equalization rings. At lower voltage levels, the selection of shed materials and structural design are the key considerations.

[0003] The typical working principle of a WPT system is as follows: Direct current (DC) is converted into high-frequency alternating current (AC) by an energy conversion device. The transmitting coil generates a high-frequency AC magnetic field, which is magnetically coupled to the receiving end under the action of a resonant compensation network. The receiving coil then transmits the electrical energy to the rectifier through the resonant compensation network, thereby converting the high-frequency AC into DC to supply power to the load. A WPT system design with multiple repeater coils can significantly improve system transmission efficiency and increase transmission distance, making it widely used in long-distance power supply applications, especially in the field of wireless power supply for online monitoring equipment on high-voltage transmission line towers.

[0004] The structural characteristics of the insulator and the non-contact nature of the WPT system allow the coupling mechanism of the WPT system to be naturally integrated into the insulator skirts. The energy transfer characteristics of the WPT system will inevitably be affected by the insulating material of the insulator and the skirt structure. Conversely, if a coil is embedded inside the insulator, its insulation and mechanical characteristics will also be affected by the coil structure. Summary of the Invention

[0005] This application provides a layered optimization design method and apparatus for high-performance insulators with coil intrusion. It addresses the impact of integrating the energy transfer coil of a multi-relay WPT system into the insulator skirt on the energy transfer characteristics of the WPT system and the electromechanical characteristics of the insulator. By changing or improving the insulation material, altering the skirt structure and coil structure parameters, and utilizing finite element numerical analysis and intelligent algorithms, it seeks the parameter combination that ensures both the electromechanical characteristics and energy transfer performance of the insulator meet the requirements, thereby guaranteeing the high-performance operation of the insulator.

[0006] The technical solution of this application is as follows:

[0007] According to a first aspect of the embodiments of this application, a coil-intrusive high-performance insulator layered optimization design method is provided, comprising:

[0008] (1) Using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, a bottom-level optimization model of material properties is established to determine the insulating material;

[0009] (2) Using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, a mid-layer optimization model of the umbrella skirt structure is established to determine the umbrella skirt structure.

[0010] (3) Using the output power and efficiency of the insulator as optimization targets, establish a top-level optimization model of the coil structure and determine the coil structure;

[0011] (4) Form a high-performance coil-intrusion insulator based on the insulating material, the skirt structure and the coil structure, and test its electromechanical characteristics and energy transmission characteristics. If the design performance requirements are not met, repeat steps (1) to (4) until the design performance requirements are met.

[0012] Optionally, the underlying optimization model of material properties is established using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, and the insulating material is determined to include:

[0013] Based on the magnetic permeability μ, electrical conductivity σ, dielectric constant ε, and density ρ, establish the performance function X1=(μ,σ,ε,ρ,...) for the insulating material;

[0014] The magnetic field, electric field, and stress field distribution of an insulator were simulated using finite element software, with the magnetic flux density B and electrical erosion depth D of a single insulator as the parameters. e Hardness H v As the optimization objective, a low-level optimization model of material properties is established: y = f[B(X1), D e (X1),H v (X1),...];

[0015] With B≥B r D e ≤D er H v ≥H vr ...as the optimization results, the magnetic flux density B and hardness H were obtained. v Both are greater than the preset target threshold and the electrical erosion depth D. e Insulating materials with values ​​below the preset target threshold are identified as the selected optimized insulating materials.

[0016] Optionally, the intermediate-layer optimization model of the shed structure is established using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization objectives, and the shed structure is determined to include:

[0017] Based on the outer diameter H of the umbrella skirt, the thickness t, the distance between adjacent umbrella skirts d, and the number A of the large umbrella skirts. i And the number of small umbrella skirts Bj The characterization function of the umbrella skirt structure established by the arrangement of large and small umbrella skirts, a:

[0018] X2=(H,t,d,A i B j ,a,...),a∈N a ,

[0019] Among them, the outer diameter H of the umbrella skirt, the thickness t, the distance d between adjacent umbrella skirts, and the number A of the large umbrella skirts are... i And the little umbrella skirt B j The range of the number of items is:

[0020] H min ≤H≤H max ,t min ≤t≤t max ,d min ≤d≤d max A imin ≤A i ≤A imax B jmin ≤B j ≤B jmax ,...;N a This is a set of arrangements of large and small umbrella skirts, and the number of elements in the set is determined by... Calculate, where 'a' is any element in the set (any arrangement of the insulator skirts). Using finite element method (FE) software, simulate the electric and stress field distributions of the insulator. Using breakdown strength, breakdown voltage, and tensile strength as optimization objectives, establish a mid-layer optimization model for the skirt structure: u = g[E]. b (X2),V b (X2),R m (X2),...];

[0021] With E b ≥E br V b ≥V br ,R m ≥R mr ...as the optimization index result, the breakdown strength E is obtained. b Breakdown voltage V b Tensile strength R m The umbrella skirt structure whose values ​​all exceed the preset target threshold is determined as the selected optimized umbrella skirt structure.

[0022] Optionally, the step of establishing a top-level optimization model for the coil structure, using the output power and efficiency of the insulator as optimization objectives, and determining the coil structure includes:

[0023] A large coil is placed in the large shed of the insulator, and a small coil is placed in the small shed. The structural parameters include the inner diameter X of the coil. in Larger than the mandrel diameter Cr Large coil outer diameter X out_g Smaller than the diameter H of the large umbrella skirt g The outer diameter of the small coil X out_s Smaller than the diameter H of the umbrella skirt s And the number of large coils C m With the number of small coils D n The constraint is A, which is the number of umbrella skirts. i ≥C m B j ≥D n The output power, voltage, and efficiency are set to meet the following requirements:

[0024] P o ≥P r V o ≥V r ,η≥η r ;

[0025] According to the inner diameter X of the insulator coil in Coil outer diameter X out =[X out_g X out_s The number of large coils C m The number of small coils D n Establish a characterization function for the coil structure based on coil arrangement method b:

[0026] X3=(X in ,X out C m D n ,b,...),b∈N b ;

[0027] The finite element method is used to obtain the inductance and resistance parameters of coils under various inner and outer diameters, numbers of coils, and arrangement methods. Then, the system output power, output voltage, and efficiency z = h[P] are calculated. o (X3),V o [(X3),η(X3)];

[0028] With P o ≥P r V o ≥V r ,η≥η r As an optimization result, the coil structure whose system output power, output voltage, and efficiency are all greater than the preset target thresholds are determined as the selected optimized coil structure.

[0029] Optional, N b This is a set of coil arrangement methods, and the number of elements in the set is determined by the formula... Calculate where b is any element in the set (any coil arrangement).

[0030] Optionally, the step of forming a coil-intrusion type high-performance insulator based on the insulating material, the shed structure, and the coil structure, and testing its electromechanical characteristics and energy transfer characteristics, if not meeting the design performance requirements, repeating steps (1) to (4) until the design performance requirements are met includes:

[0031] Check whether the rated mechanical load, weight and structural height of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of inspection. Otherwise, repeat steps (1) to (4) until the design performance requirements are met.

[0032] Check whether the rated voltage, insulation distance and minimum nominal creepage distance of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of inspection. Otherwise, repeat steps (1) to (4) until the design performance requirements are met.

[0033] Check whether the energy output characteristics of the designed insulator structure meet the design performance requirements. If yes, the design ends; otherwise, repeat steps (1) to (4) until the design performance requirements are met.

[0034] According to a second aspect of the embodiments of this application, a coil-intrusive high-performance insulator layered optimization design device is provided, comprising:

[0035] The first determination module is used to establish a low-level optimization model of material properties based on the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, and to determine the insulating material.

[0036] The second determination module is used to establish a mid-layer optimization model of the umbrella skirt structure with the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, and to determine the umbrella skirt structure.

[0037] The third determination module is used to establish a top-level optimization model of the coil structure with the output power and efficiency of the insulator as the optimization target, and to determine the coil structure.

[0038] The judgment module is used to form a high-performance insulator with coil intrusion based on the insulating material, the shed structure and the coil structure, and to check its electromechanical characteristics and energy transmission characteristics. If the design performance requirements are not met, the first determination module, the second determination module and the third determination module are repeatedly executed until the design performance requirements are met.

[0039] According to a third aspect of the embodiments of this application, a non-volatile storage device is provided, comprising: a processor, and a memory communicatively connected to the processor;

[0040] The memory stores computer-executed instructions;

[0041] The processor executes computer execution instructions stored in the memory to implement the method provided in the first aspect.

[0042] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, wherein computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are executed by a processor to implement the method provided in the first aspect.

[0043] According to a fifth aspect of the embodiments of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the method provided in the first aspect.

[0044] Beneficial effects:

[0045] This application discloses a layered optimization design method and apparatus for high-performance coil-intrusion insulators. Addressing the impact of integrating the power transfer coil of a multi-relay WPT system into the insulator skirts on the power transfer characteristics of the WPT system and the electromechanical characteristics of the insulator, the method establishes a bottom-level optimization model of material properties, using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, to determine the insulating material. A middle-level optimization model of the skirt structure is established, using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, to determine the skirt structure. A top-level optimization model of the coil structure is established, using the output power and efficiency of the insulator as optimization targets, to determine the coil structure. By changing or improving the insulating material, skirt structure, and coil structure parameters, finite element numerical analysis and intelligent algorithms are used to find parameter combinations that satisfy the requirements for both the electromechanical characteristics and power transfer performance of the insulator, thereby ensuring the high-performance operation of the insulator.

[0046] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0048] Figure 1 This is a flowchart illustrating a layered optimization design method for coil-intrusive high-performance insulators according to an exemplary embodiment;

[0049] Figure 2 This is a schematic diagram of the structure of an insulator model according to an exemplary embodiment;

[0050] Figure 3This is a schematic diagram of an equivalent circuit of a multi-relay coil WPT system according to an exemplary embodiment;

[0051] Figure 4 This is a flowchart illustrating a layered optimization design of a coil-intrusive high-performance insulator according to an exemplary embodiment.

[0052] Figure 5 This is a schematic diagram of a coil-intrusive high-performance insulator layered optimization design device according to an exemplary embodiment. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application 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 this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0055] To address the impact of integrating the power transfer coil of a multi-relay WPT system into the insulator skirts on the power transfer characteristics of the WPT system and the electromechanical characteristics of the insulator, this invention provides a coil-intrusive high-performance insulator layered optimization design method and apparatus. This method applies finite element analysis and intelligent algorithm optimization techniques to the selection of insulating materials, skirt design, and coil design of the insulator, resulting in a high-performance insulator design scheme that meets the expected objectives.

[0056] Figure 1 A flowchart illustrating a layered optimization design method for coil-intrusive high-performance insulators, provided as an exemplary embodiment of this application. Figure 1 As shown, the specific steps of this coil-intrusive high-performance insulator layered optimization design method are as follows:

[0057] Step 110: Using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, establish a low-level optimization model of material properties to determine the insulating material.

[0058] Specifically, a performance function X1 = (μ, σ, ε, ρ, ...) for the insulating material is established based on the permeability μ, conductivity σ, dielectric constant ε, and density ρ. Finite element software is used to simulate the magnetic field, electric field, and stress field distribution of the insulator, using the insulator's magnetic flux density B and electrical erosion depth D as parameters. e Hardness H v As the optimization objective, a low-level optimization model of material properties is established: y = f[B(X1), D e (X1),H v (X1),...];

[0059] With B≥B r D e ≤D er H v ≥H vr ...as the optimization results, the magnetic flux density B and hardness H were obtained. v Both are greater than the preset target threshold and the electrical erosion depth D. e Insulating materials with values ​​below the preset target threshold are identified as the selected optimized insulating materials.

[0060] Furthermore, such as Figure 2 The 35kV voltage level insulator model shown includes skirts, a core rod, metal fittings, and a power transfer coil. The power transfer coil is fixed to the insulator core rod. The insulating material is injection molded to form the insulating skirts, achieving overall insulation encapsulation. The core rod diameter is C. r The spacing between the umbrella skirts is d, the thickness is t, and the outer diameter of the large umbrella skirt is H. g The outer diameter of the umbrella skirt is H. s The number of large umbrella skirts is A i The number of small umbrella skirts is B. j The inner diameter of the coil is X. in The outer diameter of the large coil is X out_g The outer diameter of the small coil is X out_s The number of large coils is C m The number of small coils is D n .

[0061] Commonly used insulating materials fall into two main categories: silicone rubber and epoxy resin. Different component ratios (such as silica, aluminum hydroxide, and vulcanizing agents) in silicone rubber can lead to variations in the tensile strength, resistance to tracking, and electrolytic corrosion of the insulator. Similarly, mixing liquid epoxy resin with ferrite powder and a curing agent to prepare ferrite / epoxy resin composites can enhance the material's complex permeability. Different ferrite contents result in variations in the hardness and magnetic permeability of the insulating material. Therefore, the component ratios of insulating materials can be varied to create a material library. Key influencing parameters include the material's permeability μ, conductivity σ, dielectric constant ε, and density ρ. Key performance indicators include magnetic flux density B and electrolytic corrosion depth D. e Hardness Hv Etc. Using Comsol finite element simulation software to change the properties of the insulating material, the magnetic field, electric field, and stress field distributions of the insulator with different insulating materials were obtained: X1=(μ,σ,ε,ρ); y=f[B(X1),D e (X1),H v (X1)].

[0062] The reference value for the main optimization index results is set to (B). r D er H vr The designed insulating material must meet the requirements of the insulator's magnetic flux density B and hardness H. v The electrical erosion depth D must be greater than the set value. e If the value is less than the set value, this can be used as the optimization index result B≥B r D e ≤D er H v ≥H vr The Particle Swarm Optimization (PSO) algorithm is used to select the insulating material that meets the conditions.

[0063] Step 120: Using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, establish a mid-layer optimization model for the umbrella skirt structure and determine the umbrella skirt structure.

[0064] Based on the outer diameter H of the umbrella skirt, the thickness t, the distance between adjacent umbrella skirts d, and the number A of the large umbrella skirts. i And the number of small umbrella skirts B j The characterization function X2=(H,t,d,A) of the umbrella skirt structure established by the arrangement of the large and small umbrella skirts a i B j ,a,...),a∈N a Among them, the outer diameter H of the umbrella skirt, the thickness t, the distance d between adjacent umbrella skirts, and the number A of the large umbrella skirts are... i And the little umbrella skirt B j The range of the number of items is:

[0065] H min ≤H≤H max ,t min ≤t≤t max ,d min ≤d≤d max A imin ≤A i ≤A imax B jmin ≤B j ≤B jmax ...; The electric and stress field distributions of the insulator are simulated using finite element software, with the breakdown strength E... b Breakdown voltage V b Tensile strength Rm As the optimization objective, a mid-level optimization model for the umbrella skirt structure is established: u = g[E] b (X2),V b (X2),R m (X2),...];with E b ≥E br V b ≥V br ,R m ≥R mr ...as the optimization index result, the breakdown strength E is obtained. b Breakdown voltage V b Tensile strength R m The umbrella skirt structure whose values ​​all exceed the preset target threshold is determined as the selected optimized umbrella skirt structure.

[0066] Furthermore, since the insulator structure height is fixed, there is a mutually constraining relationship between the number of large and small sheds and the shed spacing. Overly dense sheds may lead to a decrease in flashover voltage, therefore the shed spacing should not be too small, thus determining the upper limit for the number of sheds. In addition, excessively large shed diameters may cause inter-shed bridging, while excessively small shed diameters may lead to insufficient leakage distance; therefore, the shed diameter must also be selected within an appropriate range. According to the requirements for power frequency overvoltage, the number of insulator discs should meet the following requirements: Where n is the number of insulator discs, λ is the creepage distance, and U m K is the system nominal voltage. e L is the effective creepage distance coefficient of the insulator. g This represents the geometric creepage distance of a single insulator.

[0067] According to the formula The minimum number of sheds for the insulator can be determined. The thickness of the sheds must ensure that the power transfer coil can be smoothly embedded; they cannot be too thin, as this will increase the weight of the insulator. Finally, the arrangement of the large and small sheds can be changed. Common arrangements include one large and one small (ABAB), one large and two small (ABB), etc., represented by the set N. a = (ABAB, ABB). Then, based on the outer diameter H of the umbrella skirt, the thickness t, the distance between adjacent umbrella skirts d, and the number of large umbrella skirts A... i And the little umbrella skirt B j The characterization function of the umbrella skirt structure, X2 = (H, t, d, A), is established based on the number of umbrella skirts and the arrangement of the umbrella skirts. i B j ,a,...),a∈N a Among them, the outer diameter H of the umbrella skirt, the thickness t, the distance d between adjacent umbrella skirts, and the number A of the large umbrella skirts are... i And the little umbrella skirt B j The range of the number of items is H min ≤H≤H max ,t min≤t≤t max ,d min ≤d≤d max A imin ≤A i ≤A imax B jmin ≤B j ≤B jmax ,...

[0068] Based on the above constraints, the electric and stress field distributions of the insulator were obtained using Comsol finite element simulation software. Key performance indicators included breakdown strength E. b Breakdown voltage V b Tensile strength R m Wait, establish the mid-level optimization model of the umbrella skirt structure u=g[E b (X2),V b (X2),R m (X2),...].

[0069] Set reference values ​​for the main optimization index results (E) r V br ,R mr The designed shed structure must meet the requirement that the insulator's breakdown strength, breakdown voltage, and tensile strength all exceed the reference values ​​of the optimized index results, i.e., according to E... b ≥E br V b ≥V br ,R m ≥R mr ...The Particle Swarm Optimization (PSO) algorithm is used to select the umbrella skirt structure that meets the conditions.

[0070] Step 130: Using the output power and efficiency of the insulator as optimization objectives, establish a top-level optimization model for the coil structure and determine the coil structure.

[0071] In the insulator structural parameters, the inner diameter X of the coil in Larger than the mandrel diameter C r Large coil outer diameter X out_g Small umbrella skirt diameter H g The outer diameter of the small coil X out_s Smaller than the diameter H of the umbrella skirt s And the number of large coils C m With the number of small coils D n The constraint is A, which is the number of umbrella skirts. i ≥C m B j ≥D n Set the output power, voltage, and efficiency to satisfy P respectively. o ≥P r V o≥V r ,η≥η r According to the inner diameter X of the insulator coil in Coil outer diameter X out =[X out_g ,X out_s The number of large coils C m The number of small coils D n Establish the characterization function X3 = (X3 = (X3) of the coil structure based on coil arrangement method b. in ,X out C m D n ,b,...),b∈N b Using the finite element method, the inductance and resistance parameters of the coils under various inner and outer diameters, numbers, and arrangements are obtained. Then, the system output power, output voltage, and efficiency z = h[P] are calculated. o (X3),V o [(X3),η(X3)];with P o ≥P r V o ≥V r ,η≥η r As an optimization result, the coil structure whose system output power, output voltage, and efficiency are all greater than the preset target thresholds are determined as the selected optimized coil structure.

[0072] Furthermore, based on the optimized insulator structure, the range of values ​​for the inner and outer diameters of the coil is determined, i.e., the inner diameter X of the coil. in Larger than the mandrel diameter C r Large coil outer diameter X out_g Smaller than the diameter H of the large umbrella skirt g The outer diameter of the small coil X out_s Smaller than the diameter H of the umbrella skirt s :X in >C r ,X out_g <H g ,X out_s <H s .

[0073] Different voltage levels of transmission lines require different types of monitoring equipment, and the power supply voltage and power requirements of different monitoring equipment also vary. Therefore, it is necessary to set the output power, voltage, and efficiency requirements of the insulator WPT system according to the power supply requirements of the monitoring equipment: P o ≥P r V o ≥V r ,η≥η r .

[0074] Furthermore, the coil size can be changed based on coil size constraints, and the number of large and small coils can also be changed, with the constraint that the number of large (small) coils is less than or equal to the number of large (small) skirts. There are also several ways to change the coil arrangement within the skirts: large coils are located within the large skirts... The arrangement is as follows, with small coils within the small umbrella skirt. Given the arrangement methods, the total number of possible combinations is: kind.

[0075] Furthermore, such as Figure 3 As shown, the SS topology multi-relay wireless power transfer system consists of three parts: a transmitter unit, a relay unit, and a receiver unit. The transmitter unit includes a DC input power supply, a full-bridge inverter, a resonant compensation capacitor, and a transmitting coil. Its input voltage is V. in The internal resistance of the power supply is R. s The relay unit includes a resonant compensation capacitor and a relay coil, with a resonant frequency of ω and R. i Let L be the equivalent internal resistance of the coil (i = 1, 2, ..., n). i C is the equivalent inductance of the coil. i The corresponding resonant compensation capacitor; the receiving unit includes a receiving coil, a resonant compensation capacitor, a passive rectifier, a DC support capacitor, and a load, R L The AC equivalent load resistance is given. The current flowing through each coil is I. i The mutual inductance between the i-th coil and the j-th coil is M. ij The system output voltage and power are respectively V. o and P o .

[0076] Furthermore, assuming all coils are tightly wound and the skirts are completely filled, a power and efficiency model for the multi-relay WPT system is established. Ideally, the circuit operates in a resonant state, i.e.:

[0077]

[0078] Taking full account of the cross-coupling between the coils, and based on the simplified equivalent circuit model of the SS topology, Kirchhoff voltage equations for n loops can be derived, and the current in each loop can be determined:

[0079]

[0080] Based on the obtained loop currents, the active power of each loop can be expressed as:

[0081]

[0082] The system output voltage can be expressed as: V o =I n *R L .

[0083] The system's transmission efficiency can be expressed as:

[0084] Using Comsol finite element magnetic field simulation, the mutual inductance and resistance parameters of coils under various structures and arrangements are obtained, and a characterization function X3 = (X in ,X out C m D n After calculating the current in each loop (b, ...), finite element numerical calculations are performed using Matlab to determine the system's output power, output voltage, and efficiency: z = h[P o (X3),V o (X3),η(X3)].

[0085] Compared to preset reference values ​​for power, voltage, and efficiency, the output voltage, power, and efficiency of the insulator's energy transfer section are required to be greater than the reference values, according to P. o ≥P r V o ≥V r ,η≥η r The Particle Swarm Optimization (PSO) algorithm is used to select the coil structure that maximizes the output efficiency and meets the requirements.

[0086] Step 140: Form a high-performance coil-intrusion insulator based on the insulating material, the shed structure, and the coil structure, and test its electromechanical characteristics and energy transfer characteristics. If it does not meet the design performance requirements, repeat steps 110 to 130 until the design performance requirements are met.

[0087] Verify whether the rated mechanical load, weight, and structural height of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of verification; otherwise, repeat steps 110 to 140 until the design performance requirements are met. Verify whether the rated voltage, insulation distance, and minimum nominal creepage distance of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of verification; otherwise, repeat steps 110 to 140 until the design performance requirements are met. Verify whether the energy output characteristics of the designed insulator structure meet the design performance requirements. If yes, end the design process; otherwise, repeat steps 110 to 140 until the design performance requirements are met.

[0088] Furthermore, the electromechanical performance and energy transfer characteristics of the designed insulator structure are tested, including verifying whether its rated voltage, rated mechanical load, structural height, insulation distance, minimum nominal creepage distance, output voltage, power, and efficiency of the energy transfer section meet the requirements. If not, the design is returned for redesign. The insulator structure design flowchart is as follows: Figure 4As shown, by changing or improving the insulation material, the skirt structure, and the coil structure parameters, finite element analysis and intelligent algorithms are used to find the parameter combination that ensures the electromechanical characteristics and energy transfer performance of the insulator meet the requirements, thus guaranteeing the high-performance operation of the insulator. This forms a theoretically complete and accurate high-performance insulator design scheme, providing ideas and specific methods for insulator structure design, and has broad engineering practical value and theoretical value.

[0089] This application discloses a layered optimization design method and apparatus for high-performance coil-intrusion insulators. Addressing the impact of integrating the power transfer coil of a multi-relay WPT system into the insulator skirts on the power transfer characteristics of the WPT system and the electromechanical characteristics of the insulator, the method establishes a bottom-level optimization model of material properties, using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, to determine the insulating material. A middle-level optimization model of the skirt structure is established, using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, to determine the skirt structure. A top-level optimization model of the coil structure is established, using the output power and efficiency of the insulator as optimization targets, to determine the coil structure. By changing or improving the insulating material, skirt structure, and coil structure parameters, finite element numerical analysis and intelligent algorithms are used to find parameter combinations that satisfy the requirements for both the electromechanical characteristics and power transfer performance of the insulator, thereby ensuring the high-performance operation of the insulator.

[0090] Figure 5 This is a schematic diagram of a coil-intrusion type high-performance insulator layering optimization device provided as an exemplary embodiment of this application. The coil-intrusion type high-performance insulator layering optimization device provided in this embodiment can execute the processing flow provided in an embodiment of a coil-intrusion type high-performance insulator layering optimization method. Figure 5 As shown, the coil-intrusion type high-performance insulator layering optimization device 20 provided in this application includes:

[0091] The first determining module 201 is used to establish a low-level optimization model of material properties using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, and to determine the insulating material.

[0092] The second determining module 202 is used to establish a mid-layer optimization model of the umbrella skirt structure with the overall breakdown strength, breakdown voltage and tensile strength of the insulator as optimization targets, and to determine the umbrella skirt structure.

[0093] The third determination module 203 is used to establish a top-level optimization model of the coil structure with the output power and efficiency of the insulator as optimization targets, and to determine the coil structure.

[0094] The judgment module 204 is used to form a high-performance insulator with coil intrusion based on the insulating material, the shed structure and the coil structure, and to check its electromechanical characteristics and energy transmission characteristics. If the design performance requirements are not met, the first determination module, the second determination module and the third determination module are repeatedly executed until the design performance requirements are met.

[0095] The apparatus provided in this application embodiment can be specifically used to perform the above-described... Figure 1 The specific functions and technical effects of the solutions provided in the corresponding method embodiments will not be elaborated here.

[0096] This invention also provides a non-volatile storage device comprising: a processor, and a memory communicatively connected to the processor;

[0097] The memory stores instructions that the computer executes;

[0098] The processor executes computer execution instructions stored in the memory to implement the solution provided in any of the above method embodiments; the specific functions and technical effects achieved are not elaborated here. The electronic device can be the server mentioned above.

[0099] This application also provides a computer-readable storage medium storing computer-executable instructions. When executed by a processor, the computer-executable instructions are used to implement the solution provided in any of the above method embodiments. The specific functions and technical effects to be achieved are not described here.

[0100] This application also provides a computer program product, which includes a computer program stored in a readable storage medium. At least one processor of the electronic device can read the computer program from the readable storage medium. The at least one processor executes the computer program to cause the electronic device to perform the solution provided in any of the above method embodiments. The specific functions and technical effects that can be achieved are not described here.

[0101] The application scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0102] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."

[0103] In some possible implementations, the electronic device according to this application may include at least one processor and at least one memory. The memory stores program code that, when executed by the processor, causes the processor to perform the operational data management methods according to the various exemplary embodiments of this application described above. For example, the processor may perform steps such as those in the operational data management method.

[0104] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0105] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0106] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application 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.

[0107] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. 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 image scaling device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable image scaling device, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0108] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable image scaling 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 processes and / or boxes Figure 1 The function specified in one or more boxes.

[0109] These computer program instructions can also be loaded onto a computer or other programmable image scaling device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0110] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0111] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A layered optimization design method for high-performance insulators with coil immersion, characterized in that, The high-performance insulator layered optimization design method includes: (1) Using the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, a bottom-level optimization model of material properties is established to determine the insulating material; (2) Using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, establish a mid-layer optimization model for the umbrella skirt structure and determine the umbrella skirt structure; (3) Using the output power and efficiency of the insulator as optimization objectives, establish a top-level optimization model for the coil structure and determine the coil structure; (4) Form a high-performance coil-intrusion insulator based on the insulating material, the shed structure and the coil structure, and test its electromechanical characteristics and energy transfer characteristics. If the design performance requirements are not met, repeat steps (1) to (4) until the design performance requirements are met. The method uses the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets to establish a low-level optimization model of material properties, determining that the insulating materials include: The performance function of the insulating material is established based on the magnetic permeability μ, electrical conductivity σ, dielectric constant ε, and density ρ. ; The magnetic field, electric field, and stress field distribution of an insulator were simulated using finite element software, with the magnetic flux density B and electrical erosion depth D of a single insulator as the parameters. e Hardness H v As the optimization objective, a low-level optimization model for material properties is established. ; by As optimization results, magnetic flux density B and hardness H were obtained. v Both are greater than the preset target threshold and the electrical erosion depth D. e Insulating materials with values ​​below the preset target threshold are identified as the selected optimized insulating materials; The optimization model for the umbrella skirt structure is established using the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization objectives. The umbrella skirt structure includes: Based on the outer diameter H of the umbrella skirt, the thickness t, the distance between adjacent umbrella skirts d, and the number A of the large umbrella skirts. i And the number of small umbrella skirts B j The characterization function of the umbrella skirt structure established by the arrangement of large and small umbrella skirts, a: ； Among them, the outer diameter H of the umbrella skirt, the thickness t, the distance d between adjacent umbrella skirts, and the number A of the large umbrella skirts are... i And the little umbrella skirt B j The range of the number of items is: N a This is a set of arrangements of large and small umbrella skirts, with the number of elements in the set using... Calculate, where a is any element in the set; The electric and stress field distributions of the insulator were simulated using finite element software, with the insulator breakdown strength E as the data source. b Breakdown voltage V b Tensile strength R m As the optimization objective, a mid-level optimization model for the umbrella skirt structure is established. ; by As an optimization index result, the breakdown strength E is obtained. b Breakdown voltage V b Tensile strength R m The umbrella skirt structure whose values ​​all exceed the preset target threshold is determined as the selected optimized umbrella skirt structure; The top-level optimization model of the coil structure is established using the output power and efficiency of the insulator as optimization objectives, and the coil structure is determined as follows: A large coil is placed in the large insulator skirt, and a small coil is placed in the small insulator skirt; the inner diameter X of the coil is listed in the structural parameters. in Larger than the mandrel diameter C r Large coil outer diameter X out_g Smaller than the diameter H of the large umbrella skirt g The outer diameter of the small coil X out_s Smaller than the diameter H of the umbrella skirt s And the number of large coils C m With the number of small coils D n Constrained by the number of umbrella skirts Set the output power, voltage, and efficiency to meet the following requirements: ; Based on the coil inner diameter X of the insulator system in Coil outer diameter X out =[X out_g, X out_s The number of large coils C m The number of small coils D n Establish a characterization function for the coil structure based on coil arrangement method b. N b Let b be any element in the set of coil arrangement methods; The finite element method is used to calculate the inductance and resistance parameters of coils under various inner and outer diameters, numbers, and arrangements, thereby determining the system output power, output voltage, and efficiency. ; by As an optimization result, the coil structure whose system output power, output voltage, and efficiency are all greater than the preset target threshold is determined as the selected optimized coil structure.

2. The high-performance insulator layered optimization design method according to claim 1, characterized in that, The process of forming a high-performance coil-intrusion insulator based on the insulating material, the shed structure, and the coil structure, and then inspecting its electromechanical and energy transfer characteristics, if not meeting the design performance requirements, involves repeating steps (1) to (4) until the design performance requirements are met. Check whether the rated mechanical load, weight and structural height of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of inspection. Otherwise, repeat steps (1) to (4) until the design performance requirements are met. Check whether the rated voltage, insulation distance and minimum nominal creepage distance of the designed insulator structure meet the design performance requirements. If yes, proceed to the next step of inspection. Otherwise, repeat steps (1) to (4) until the design performance requirements are met. Check whether the energy output characteristics of the designed insulator structure meet the design performance requirements. If yes, the design ends; otherwise, repeat steps (1) to (4) until the design performance requirements are met.

3. A coil-intrusive high-performance insulator layered optimization design device, used to implement the method described in claim 1 or 2, characterized in that, The high-performance insulator layered optimization design device includes: The first determination module is used to establish a low-level optimization model of material properties based on the magnetic flux density, electrical erosion depth, and hardness of a single insulator as optimization targets, and to determine the insulating material. The second determination module is used to establish a mid-layer optimization model of the umbrella skirt structure with the overall breakdown strength, breakdown voltage, and tensile strength of the insulator as optimization targets, and to determine the umbrella skirt structure. The third determination module is used to establish a top-level optimization model of the coil structure with the output power and efficiency of the insulator as the optimization target, and to determine the coil structure. The judgment module is used to form a high-performance insulator with coil intrusion based on the insulating material, the shed structure and the coil structure, and to check its electromechanical characteristics and energy transmission characteristics. If the design performance requirements are not met, the first determination module, the second determination module and the third determination module are repeatedly executed until the design performance requirements are met.

4. A non-volatile storage device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in claim 1 or 2.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in claim 1 or 2.

6. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method described in claim 1 or 2.

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