Converter valve temperature difference energy distribution characteristic simulation method and system

Abstract

The invention provides a converter valve temperature difference energy distribution characteristic simulation method and system, and the method comprises the steps: building a converter valve tower model according to the structure parameters of a converter valve tower; superposing a plurality of pre-created physical fields on the converter valve tower model to obtain converter valve tower models under the plurality of physical fields; performing steady-state solution on the converter valve tower model under the plurality of physical fields to obtain temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve; the converter valve tower model under the multiple physical fields fully considers the multi-physical field coupling effect when the converter valve works, so that the converter valve tower model under the multiple physical fields can more accurately describe the whole process of heating of each component of the converter valve, heat transfer between solids, fluid-solid heat transfer and fluid flowing and finally realize the steady state of a thermal field and a flow field; and accurate surface temperature distribution of each component of the converter valve and temperature difference distribution characteristics of surrounding space are obtained.

Description

Technical Field

[0001] The patent application of the present invention belongs to the field of converter valves, and specifically relates to a method and system for simulating the temperature difference energy distribution characteristics of converter valves. Background Art

[0002] With the continuous advancement of the intelligentization of power grids, more and more parameters need to be monitored in the power grid, and the power supply problem of online monitoring devices is becoming more and more prominent. At present, the common power supply methods for online monitoring devices are battery power supply, solar power supply, laser power supply and vibration power supply. However, there are abundant sources of temperature difference energy in power environments such as converter valves, and temperature difference energy devices have the characteristics of simple structure and high energy density. Therefore, temperature difference energy devices have very considerable application prospects in the power supply of converter valve online monitoring devices.

[0003] In the design phase, the temperature difference energy harvesting device needs to estimate the temperature difference energy level of the environment near each component of the converter valve to guide the design of parameters such as structure and materials to meet the power supply requirements of different state monitoring devices. At present, the temperature distribution characteristics of the converter valve are often measured by sensors and theoretically calculated. The values ​​obtained by sensor measurement are more accurate, but the deployment process is more complicated and cumbersome, and may affect the normal operation of the converter valve equipment; the theoretical calculation method requires the construction of a theoretical model for temperature difference distribution calculation. The converter valve has a complex structure and variable working conditions, so it is difficult to build an accurate theoretical model to describe the heat transfer and fluid flow phenomena on the surface of the converter valve and the surrounding space. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention patent application proposes a method for simulating the temperature difference energy distribution characteristics of a converter valve, comprising:

[0005] According to the structural parameters of the converter valve, a converter valve model is constructed using three-dimensional modeling technology;

[0006] Superimposing a plurality of pre-created physical fields on the converter valve model to obtain a converter valve model under a plurality of physical fields;

[0007] Performing steady-state solutions on the converter valve models under the multiple physical fields to obtain temperature difference energy distribution characteristics on the component surface and the space around the cross section of the converter valve;

[0008] The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

[0009] Preferably, the multiple physical fields include a solid fluid heat transfer physical field, a laminar flow physical field, and a non-isothermal flow physical field; the multiple pre-created physical fields are superimposed on the converter valve model to obtain a converter valve model under multiple physical fields, including:

[0010] Adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field;

[0011] Superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field;

[0012] The non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, so as to obtain the converter valve model under the final superimposed multiple physical fields.

[0013] Preferably, the adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field includes:

[0014] According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic;

[0015] The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field;

[0016] The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

[0017] Preferably, the constitutive equation of the solid fluid heat transfer physical field is as follows:

[0018]

[0019] Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

[0020] Preferably, superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field includes:

[0021] According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity;

[0022] The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls;

[0023] The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained;

[0024] The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

[0025] Preferably, the constitutive equation of the laminar flow physical field is as follows:

[0026]

[0027] Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

[0028] Preferably, the non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain the converter valve model under multiple superimposed physical fields, including:

[0029] In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical field and the solid fluid heat transfer physical field are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

[0030] Preferably, the constitutive equation of the non-isothermal flow physical field is as follows:

[0031] Q vd =τ:▽u

[0032] Among them, Q vd is the total heat of the system, τ is the viscous stress tensor, and u is the velocity field.

[0033] Preferably, the step of constructing a converter valve model using three-dimensional modeling technology according to the structural parameters of the converter valve includes:

[0034] According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model;

[0035] Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

[0036] Preferably, the steady-state solution of the converter valve model under the multiple physical fields to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve includes:

[0037] Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model;

[0038] Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model;

[0039] According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

[0040] Based on the same inventive concept, the patent application of the present invention also provides a converter valve temperature difference energy distribution characteristic simulation system, including: a converter valve model construction module, a physical field superposition module, and a temperature difference distribution characteristic determination module;

[0041] The converter valve model building module is used to build a converter valve model using three-dimensional modeling technology according to the structural parameters of the converter valve;

[0042] The physical field superposition module is used to superimpose multiple pre-created physical fields on the converter valve model to obtain the converter valve model under multiple physical fields;

[0043] The temperature difference distribution characteristic determination module is used to perform a steady-state solution on the converter valve model under the multiple physical fields to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve;

[0044] The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

[0045] Preferably, the multiple physical fields include a solid fluid heat transfer physical field, a laminar flow physical field, and a non-isothermal flow physical field; the converter valve model building module includes:

[0046] A solid fluid heat transfer physical field superposition submodule, used for adding the solid fluid heat transfer physical field to the converter valve model to obtain a converter valve model under the solid fluid heat transfer physical field;

[0047] A laminar flow physical field superposition submodule, used for superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field;

[0048] The non-isothermal flow physical field superposition submodule is used to superimpose the non-isothermal flow physical field on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain the converter valve model under the final superimposed multiple physical fields.

[0049] Preferably, the solid-fluid heat transfer physical field superposition submodule is specifically used for:

[0050] According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic;

[0051] The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field;

[0052] The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

[0053] Preferably, the constitutive equation of the solid fluid heat transfer physical field is as follows:

[0054]

[0055] Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

[0056] Preferably, the laminar flow physical field superposition submodule is specifically used for:

[0057] According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity;

[0058] The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls;

[0059] The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained;

[0060] The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

[0061] Preferably, the constitutive equation of the laminar flow physical field is as follows:

[0062]

[0063] Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

[0064] Preferably, the non-isothermal flow physical field superposition submodule is specifically used for:

[0065] In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical field and the solid fluid heat transfer physical field are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

[0066] Preferably, the constitutive equation of the non-isothermal flow physical field is as follows:

[0067] Q vd =τ:▽u

[0068] Among them, Q vd is the total heat of the system, τ is the viscous stress tensor, and u is the velocity field.

[0069] Preferably, the converter valve model building module is specifically used for:

[0070] According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model;

[0071] Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

[0072] Preferably, the temperature difference distribution characteristic determination module is specifically used for:

[0073] Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model;

[0074] Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model;

[0075] According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

[0076] Based on the same inventive concept, the present patent application also provides a computer device, including: one or more processors;

[0077] A memory for storing one or more programs;

[0078] When the one or more programs are executed by the one or more processors, a method for simulating the temperature difference energy distribution characteristics of a converter valve as described above is implemented.

[0079] Based on the same inventive concept, the patent application of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed, a method for simulating the temperature difference energy distribution characteristics of a converter valve as described above is implemented.

[0080] Compared with the closest prior art, the patent application of this invention has the following beneficial effects:

[0081] The patent application of the present invention provides a method and system for simulating the temperature difference energy distribution characteristics of a converter valve, comprising: constructing a converter valve tower model according to the structural parameters of the converter valve tower; superimposing a plurality of pre-created physical fields on the converter valve tower model to obtain a converter valve tower model under a plurality of physical fields; performing steady-state solution on the converter valve tower model under the plurality of physical fields to obtain the temperature difference energy distribution characteristics of the component surface of the converter valve and the space around the cross section; wherein the plurality of physical fields are created based on the heat transfer phenomenon between the surfaces of the components of the converter valve tower and the surrounding space; the plurality of physical fields of the present invention are obtained by modeling the heat transfer phenomenon between the surfaces of the components of the converter valve tower and the surrounding space, and the converter valve tower model under the plurality of physical fields fully considers the multi-physical field coupling effect of the heat generation and the heat transfer heating field and the flow field when the converter valve is working, so the converter valve tower model under the plurality of physical fields can more accurately describe the heat generation of the converter valve components, the heat transfer between solids, the fluid-solid heat transfer, the fluid flow and finally realize the whole process of the steady state of the thermal field and the flow field, thereby obtaining the accurate surface temperature distribution of the components of the converter valve and the temperature difference distribution characteristics of the surrounding space. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 A schematic flow chart of a method for simulating the temperature difference energy distribution characteristics of a converter valve provided in the patent application of the present invention;

[0083] Figure 2 A schematic diagram of the tower structure of the converter valve provided for the patent application of the present invention;

[0084] Figure 3 Grid division effect diagram of the converter valve tower model provided for the patent application of the present invention;

[0085] Figure 4 The surface temperature distribution diagram of each component and structural part of the converter valve provided in the patent application of the present invention;

[0086] Figure 5 The temperature gradient distribution diagram of the space around the converter valve provided in the patent application of the present invention;

[0087] Figure 6 A flow chart of the steps of a method for simulating the temperature difference energy distribution characteristics of a converter valve provided in the patent application of the present invention;

[0088] Figure 7 A schematic diagram of a converter valve temperature difference energy distribution characteristic simulation system provided in the patent application of the present invention;

[0089] Figure 8 A schematic structural diagram of an electronic device provided for the patent application of the present invention. DETAILED DESCRIPTION

[0090] The specific implementation methods of the patent application of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0091] Embodiment 1:

[0092] The present invention patent application provides a method for simulating the temperature difference energy distribution characteristics of a converter valve. Figure 1 As shown, including:

[0093] Step 1: Based on the structural parameters of the converter valve, a converter valve model is constructed using three-dimensional modeling technology;

[0094] Step 2: superimposing multiple pre-created physical fields onto the converter valve model to obtain the converter valve model under multiple physical fields;

[0095] Step 3: performing steady-state solution on the converter valve model under the multiple physical fields to obtain temperature difference energy distribution characteristics on the component surface and the space around the cross section of the converter valve;

[0096] The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

[0097] In step 1, a converter valve model is constructed using three-dimensional modeling technology according to the structural parameters of the converter valve, including:

[0098] According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model;

[0099] Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

[0100] For example, Figure 2 As shown, according to the tower structure dimension drawing of the converter valve, the three-dimensional model of each component of the converter valve is drawn in Solidworks (three-dimensional modeling design software), and the modeling components include saturated reactor, thyristor, thyristor radiator, damping capacitor, connecting busbar, valve tower connection structure and shielding cover. The model can be reasonably simplified during modeling to avoid overly complex and unnecessary calculations. Then, the assembly function in Solidworks software is used to assemble the models of each component to form a complete converter valve tower model. The present invention adopts the tower structure dimension drawing of the converter valve, and constructs the various components of the converter valve through the three-dimensional modeling design software, and assembles the models of each component to form a complete converter valve tower model. This method can complete the construction of the converter valve model more quickly and is not prone to errors. When adjustments are needed later, they can be easily adjusted.

[0101] The multiple physical fields described in step 2 above include a solid fluid heat transfer physical field, a laminar flow physical field, and a non-isothermal flow physical field; the multiple pre-created physical fields are superimposed on the converter valve model to obtain a converter valve model under multiple physical fields, including:

[0102] Adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field;

[0103] Superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field;

[0104] The non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, so as to obtain the converter valve model under the final superimposed multiple physical fields.

[0105] For example, solid fluid heat transfer physical fields, laminar flow physical fields, and non-isothermal flow physical fields are created in COMSOL (multi-physics field coupling simulation software), and the converter valve model created in Solidworks is imported into COMSOL. Before superimposing the above multi-physics fields, the curves, surfaces, and redundant structures of the converter valve model are simplified, and the continuous tangency tolerance is set to 5 degrees, and the details such as continuously tangent vertices, short edges, small faces, long strips, narrow surface areas, thin domains, etc. are removed.

[0106] Add materials to the components of the converter valve model, where the saturated reactor, damping capacitor, thyristor heat sink, shield cover are set to Aluminum, the thyristor is set to Slicon, the connecting busbar is set to Copper, the valve tower connection structure is set to Steel AISI 4340, and the air threshold is set to Air.

[0107] In one implementation, the adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field includes:

[0108] According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic;

[0109] The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field;

[0110] The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

[0111] For example, the solid fluid heat transfer physical field in COMSOL is used to simulate the surface heating of each component of the converter valve and the heat transfer phenomenon with other components and surrounding air, and based on this, the thermal parameters and thermal boundaries of the converter valve heat exchange system are completed; the parameters of the converter valve model under the solid fluid heat transfer physical field are set, wherein the converter valve model is set as a solid as a whole, the thermal conductivity, density, and constant-pressure heat capacity are all consistent with the parameters of each material, the air threshold is set as a fluid, the thermal conductivity, density, and constant-pressure heat capacity are consistent with the Air parameters, the specific heat rate is set to automatic, the initial temperature value is set to 298K to represent the ambient temperature in the converter valve hall, the four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated inductor, the damping capacitor, and the thyristor are set as heat sources, the heat consumption rates are set to 0.5W, 0.4W, and 0.6W respectively, and the upper and lower end surfaces of the air threshold are set as open boundaries to allow air circulation.

[0112] In one implementation, the constitutive equation of the solid-fluid heat transfer physical field is as follows:

[0113]

[0114] Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

[0115] In one implementation, superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field includes:

[0116] According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity;

[0117] The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls;

[0118] The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained;

[0119] The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

[0120] For example, the laminar flow physics field in COMSOL is used to simulate the heat flow phenomenon in the air domain around the converter valve, and based on this, the air fluid parameters and flow boundaries of the space around the converter valve model are completed, and the parameters of the converter valve model under the laminar flow physics field are set. In the fluid properties, the constitutive relationship is set to formulate dynamic viscosity, the viscosity is set to be consistent with the Air parameter, and the initial value of the fluid velocity field is set as follows:

[0121] [x=0,y=0,z=0]m / s

[0122] Among them, x is the speed value in the x-axis direction, y is the speed value in the y-axis direction, and z is the speed value in the z-axis direction;

[0123] The initial pressure value is set to O Pa, and the hydrostatic pressure compensation approximation is set. The outer surface of the converter valve model body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent fluid flow. The boundary condition is set to a no-slip wall. The upper and lower ends of the air threshold are set as open boundaries to allow fluid to flow. The boundary condition is set to normal stress, and the normal stress value is set to 0 N / s. 2 , and using the hydrostatic pressure compensation approximation, the system gravity acceleration is set as follows:

[0124] [x=0,y=-g_const,z=0]m / s 2

[0125] Among them, g_const is the gravitational acceleration constant, g is a constant, g = 9.8m / s 2 ;

[0126] In one implementation, the constitutive equation of the laminar flow physical field is as follows:

[0127]

[0128] Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

[0129] In one implementation, the non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain the converter valve model under the final superimposed multiple physical fields, including:

[0130] In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical field and the solid fluid heat transfer physical field are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

[0131] For example, set the parameters of the converter valve model under the non-isothermal flow physics field, add the laminar flow physics field and solid fluid heat transfer physics field in the coupling interface, and the material density comes from the heat transfer interface and is set as the material density. The calculation formula of the material density is as follows:

[0132] ρ=ρ(ρ ref ,T c )

[0133] Where ρ is the material density, ρ ref is the reference density, T c is the reference temperature;

[0134] The reference temperature is set from the Heat Transfer interface and the flow heating is set to include viscous dissipation.

[0135] In one implementation, the constitutive equation of the non-isothermal flow physical field is as follows:

[0136] Q vd =τ:▽u

[0137] Among them, Q vd is the total heat of the system, τ is the viscous stress tensor, and u is the velocity field; the solid fluid heat transfer physical field, laminar flow physical field, and non-isothermal flow physical field created by the present invention are created by considering various heat transfer phenomena, so the subsequent superposition on the converter valve tower model can increase the accuracy of the final converter valve tower model; the constitutive equation of the solid fluid heat transfer physical field of the present invention realizes the coupling of the solid fluid heat transfer physical field; the constitutive equation of the non-isothermal flow physical field realizes the coupling of the non-isothermal flow physical field; the constitutive equation of the laminar flow physical field realizes the coupling of the laminar flow physical field; the present invention uses COMSOL to construct the solid fluid heat transfer physical field, laminar flow physical field, and non-isothermal flow physical field to realize the multi-physics coupling analysis of heat transfer between the converter valve surface and the surrounding space. Compared with other simulation software, COMSOL is not limited by physical fields and coupling forms, and there is no need to set assumptions or compile interface programs, making it easier to implement. In addition, due to the simultaneous calculation of the bottom layer, the calculation accuracy of the coupling problem can be ensured. The calculation method of the present invention is simple and fast, has strong versatility, strong operability, and small calculation error, and is therefore suitable for calculating the temperature distribution characteristics of the surface of a converter valve assembly and the surrounding space.

[0138] The step 3 described above performs a steady-state solution on the converter valve model under the multiple physical fields to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve, including:

[0139] Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model;

[0140] For example, Figure 3 As shown in the figure, the converter valve model is meshed in a multi-physics control network, the unit size is set to be coarser, and the contribution items include solid-fluid heat transfer, laminar flow, and non-isothermal flow.

[0141] Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model;

[0142] According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

[0143] For example, the steady-state solution of the converter valve model is performed to calculate the temperature field, pressure field, and velocity field in the converter valve model. Then, the temperature field, pressure field, and velocity field vector diagrams are drawn through the post-processing module, such as Figure 4 The figure shows the surface temperature distribution diagram of each component and structure of the converter valve model. Figure 5 The figure shows a schematic diagram of the temperature gradient distribution in the space around the converter valve model, and is provided to display the temperature difference distribution characteristics of the surface and the space around the cross section of the converter valve component; the present invention realizes the visualization of the temperature distribution characteristics of the surface and the surrounding space of each component of the converter valve through multi-physics field coupling simulation software; the present invention realizes the visualization of the temperature distribution characteristics of the surface and the surrounding space of each component of the converter valve through Figure 6 The flow chart shown is based on multi-physics coupling simulation software, and uses solid-fluid heat transfer physics, laminar flow physics and non-isothermal flow physics to model the heat transfer phenomenon between the surface of each component of the converter valve and the surrounding space. The air domain in the space around the converter valve is regarded as laminar and incompressible, and the multi-physics coupling of heat generation and heat transfer heating field and flow field when the converter valve is working is fully considered. Therefore, it can more accurately describe the whole process of heat generation of each component of the converter valve, heat transfer between solids, fluid-solid heat transfer, fluid flow and finally realize the steady state of thermal field and flow field, and then obtain the visual simulation data of the surface temperature distribution of each component of the converter valve and the temperature difference distribution characteristics of the surrounding space.

[0144] Embodiment 2:

[0145] Based on the same inventive concept, the present invention patent application also provides a converter valve temperature difference energy distribution characteristic simulation system such as Figure 7 As shown, it includes: a converter valve model building module, a physical field superposition module, and a temperature difference distribution characteristic determination module;

[0146] The converter valve model building module is used to build a converter valve model using three-dimensional modeling technology according to the structural parameters of the converter valve;

[0147] The physical field superposition module is used to superimpose multiple pre-created physical fields on the converter valve model to obtain the converter valve model under multiple physical fields;

[0148] The temperature difference distribution characteristic determination module is used to perform a steady-state solution on the converter valve model under the multiple physical fields to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve;

[0149] The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

[0150] Preferably, the multiple physical fields include a solid fluid heat transfer physical field, a laminar flow physical field, and a non-isothermal flow physical field; the converter valve model building module includes:

[0151] A solid fluid heat transfer physical field superposition submodule, used for adding the solid fluid heat transfer physical field to the converter valve model to obtain a converter valve model under the solid fluid heat transfer physical field;

[0152] A laminar flow physical field superposition submodule, used for superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field;

[0153] The non-isothermal flow physical field superposition submodule is used to superimpose the non-isothermal flow physical field on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain the converter valve model under the final superimposed multiple physical fields.

[0154] Preferably, the solid-fluid heat transfer physical field superposition submodule is specifically used for:

[0155] According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic;

[0156] The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field;

[0157] The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

[0158] Preferably, the constitutive equation of the solid fluid heat transfer physical field is as follows:

[0159]

[0160] Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

[0161] Preferably, the laminar flow physical field superposition submodule is specifically used for:

[0162] According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity;

[0163] The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls;

[0164] The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained;

[0165] The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

[0166] Preferably, the constitutive equation of the laminar flow physical field is as follows:

[0167]

[0168] Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

[0169] Preferably, the non-isothermal flow physical field superposition submodule is specifically used for:

[0170] In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical layer and the solid fluid heat transfer physical layer are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

[0171] Preferably, the constitutive equation of the non-isothermal flow physical field is as follows:

[0172] Q vd =τ:▽u

[0173] Among them, Q vdis the total heat of the system, τ is the viscous stress tensor, and u is the velocity field.

[0174] Preferably, the converter valve model building module is specifically used for:

[0175] According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model;

[0176] Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

[0177] Preferably, the temperature difference distribution characteristic determination module is specifically used for:

[0178] Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model;

[0179] Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model;

[0180] According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

[0181] Example 3

[0182] like Figure 8 As shown, the present invention also provides an electronic device, which may be a computer device, a single-chip device, an intelligent mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, the processor, and the transceiver component are connected via a bus; the memory may be used to store an execution program, and an exemplary execution program may include instructions; the processor is used to execute the instructions stored in the memory. The memory may also be used to store data, which may be called and / or modified when the instructions are executed.

[0183] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in a storage medium to implement a corresponding method flow or a corresponding function, so as to implement the steps of a method for simulating the temperature difference energy distribution characteristics of a converter valve in the above-mentioned embodiment.

[0184] Example 4

[0185] Based on the same inventive concept, the present invention also provides a readable storage medium, specifically an electronic device readable storage medium (Memory), which is a memory device in the electronic device for storing programs and data. It can be understood that the storage medium here can include both the built-in storage medium in the electronic device and the extended storage medium supported by the electronic device. The storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more execution programs (including program codes). It should be noted that the storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor loads and executes one or more instructions stored in the storage medium, which can implement the steps of a method for simulating the temperature difference energy distribution characteristics of a converter valve in the above embodiment.

[0186] It should be understood by those skilled in the art that the embodiments of the present invention patent application can be provided as methods, systems, or computer program products. Therefore, the present invention patent application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention patent application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0187] The present invention patent application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present invention patent application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0188] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0189] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the patent application of the present invention rather than to limit its protection scope. Although the patent application of the present invention is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the patent application of the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims to be approved.

Claims

1. A method for simulating the temperature difference energy distribution characteristics of a converter valve, characterized in that: include: According to the structural parameters of the converter valve, a converter valve model is constructed using three-dimensional modeling technology; Superimposing a plurality of pre-created physical fields on the converter valve model to obtain a converter valve model under a plurality of physical fields; Performing steady-state solutions on the converter valve models under the multiple physical fields to obtain temperature difference energy distribution characteristics on the component surface and the space around the cross section of the converter valve; The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

2. The method according to claim 1, characterized in that The multiple physical fields include a solid fluid heat transfer physical field, a laminar flow physical field, and a non-isothermal flow physical field; the multiple pre-created physical fields are superimposed on the converter valve model to obtain a converter valve model under multiple physical fields, including: Adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field; Superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field; The non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, so as to obtain the converter valve model under the final superimposed multiple physical fields.

3. The method according to claim 2, characterized in that The step of adding the solid fluid heat transfer physical field to the converter valve model to obtain the converter valve model under the solid fluid heat transfer physical field includes: According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic; The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field; The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

4. The method according to claim 3, characterized in that The constitutive equation of the solid-fluid heat transfer physical field is as follows: Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

5. The method according to claim 3, characterized in that The laminar flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, including: According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity; The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls; The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained; The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

6. The method according to claim 5, characterized in that The constitutive equation of the laminar flow field is as follows: Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

7. The method according to claim 5, characterized in that The non-isothermal flow physical field is superimposed on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain a converter valve model under multiple superimposed physical fields, including: In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical field and the solid fluid heat transfer physical field are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

8. The method according to claim 7, characterized in that The constitutive equation of the non-isothermal flow physics field is as follows: Among them, Q vd is the total heat of the system, τ is the viscous stress tensor, and u is the velocity field.

9. The method according to claim 1, characterized in that The method of constructing a converter valve model by using a three-dimensional modeling technology according to the structural parameters of the converter valve includes: According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model; Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

10. The method according to claim 2, characterized in that The converter valve model under the multiple physical fields is solved in a steady state to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve, including: Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model; Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model; According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

11. A converter valve temperature difference energy distribution characteristic simulation system, characterized in that: include: Converter valve model building module, physical field superposition module, temperature difference distribution characteristic determination module; The converter valve model building module is used to build a converter valve model using three-dimensional modeling technology according to the structural parameters of the converter valve; The physical field superposition module is used to superimpose multiple pre-created physical fields on the converter valve model to obtain the converter valve model under multiple physical fields; The temperature difference distribution characteristic determination module is used to perform a steady-state solution on the converter valve model under the multiple physical fields to obtain the temperature difference energy distribution characteristics of the component surface and the space around the cross section of the converter valve; The multiple physical fields are created based on the heat transfer phenomenon between the surfaces of each component of the converter valve and the surrounding space.

12. The system according to claim 11, characterized in that The multiple physical fields include solid-fluid heat transfer physical field, laminar flow physical field and non-isothermal flow physical field; The converter valve model building module includes: A solid fluid heat transfer physical field superposition submodule, used for adding the solid fluid heat transfer physical field to the converter valve model to obtain a converter valve model under the solid fluid heat transfer physical field; A laminar flow physical field superposition submodule, used for superimposing the laminar flow physical field on the converter valve model under the solid fluid heat transfer physical field to obtain the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field; The non-isothermal flow physical field superposition submodule is used to superimpose the non-isothermal flow physical field on the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field to obtain the converter valve model under the final superimposed multiple physical fields.

13. The system of claim 12, wherein: The solid-fluid heat transfer physical field superposition submodule is specifically used for: According to the thermal parameters and thermal boundaries of the solid-fluid heat transfer physical field, the converter valve in the converter valve model is set as a solid, the air threshold is set as a fluid, and the specific heat rate is set as automatic; The four sides of the air domain parallel to the gravity direction are set as thermal insulation surfaces, the saturated reactor model, the damping capacitor model, and the thyristor model are set as heat sources, and the upper and lower end surfaces of the air threshold are set as open boundaries, so as to obtain a converter valve model under the solid fluid heat transfer physical field; The thermal parameters and thermal boundaries are determined by simulating the surface heating of each component of the converter valve and the heat transfer phenomena with other components and the surrounding air through the solid-fluid heat transfer physical field module in the multi-physics field coupling simulation software.

14. The system of claim 13, wherein: The constitutive equation of the solid-fluid heat transfer physical field is as follows: Where ρ is the density, C p is the constant pressure heat capacity, u is the velocity field, T2 is the initial temperature, q is the volume heat conduction, Q is the heat absorbed by the system, Q ted is the thermoelastic damping and k is the thermal conductivity.

15. The system of claim 13, wherein: The laminar flow physical field superposition submodule is specifically used for: According to air fluid parameters and flow boundaries in the laminar flow physical field, in the fluid properties of the converter valve model under the solid fluid heat transfer physical field, a constitutive relationship is set to formulate dynamic viscosity; The outer surface of the converter valve body and the four sides of the air threshold parallel to the gravity direction are set as wall structures to prevent the flow of fluid, and the boundary conditions are set as no-slip walls; The upper and lower end surfaces of the air threshold are set as open boundaries, the boundary conditions are set as normal stress, the constitutive equation of the laminar flow physical field is generated, and the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field is obtained; The thermal parameter thermal boundary is determined by simulating the heat flow phenomenon of the air domain around the converter valve through the laminar flow physical field module in the multi-physics field coupling simulation software.

16. The system of claim 15, wherein: The constitutive equation of the laminar flow field is as follows: Among them, ρ is density, u is velocity field, p is pressure, I is unit matrix, K is viscous stress tensor, F is external force field, g is constant, T L is the fluid temperature and μ is the dynamic viscosity.

17. The system of claim 15, wherein: The non-isothermal flow physical field superposition submodule is specifically used for: In the converter valve model under the solid fluid heat transfer physical field and the laminar flow physical field, the laminar flow physical field and the solid fluid heat transfer physical field are coupled through the coupling interface of the non-isothermal flow physical field to obtain the converter valve model under multiple superimposed physical fields.

18. The system of claim 17, wherein: The constitutive equation of the non-isothermal flow physics field is as follows: Q vd =τ:▽u Among them, Q vd is the total heat of the system, τ is the viscous stress tensor, and u is the velocity field.

19. The system of claim 11, wherein: The converter valve model building module is specifically used for: According to the structural parameters of each component in the converter valve, after constructing the component models of the converter valve in the three-dimensional modeling design software, the component models are assembled into a converter valve model; Among them, the component models include at least one or more of the following: a saturated reactor model, a thyristor model, a thyristor radiator model, a damping capacitor model, a connecting busbar model, a valve tower connection structure model and a shielding cover model.

20. The system of claim 12, wherein: The temperature difference distribution characteristic determination module is specifically used for: Meshing the converter valve model under the multiple physical fields finally superimposed by the controller in a multi-physical field control network manner to obtain a meshed converter valve model; Performing a steady-state solution on the grid-divided converter valve model to calculate the temperature field, pressure field and velocity field of the grid-divided converter valve model; According to the temperature field, pressure field and velocity field, the temperature field, pressure field and velocity field vector diagrams are drawn through the post-processing module of the multi-physics field coupling simulation software, and the temperature difference energy distribution characteristics of the surface of the converter valve component and the space around the cross section are displayed.

21. An electronic device, characterized in that: include: at least one processor and memory; The memory and the processor are connected via a bus; The memory is used to store one or more programs; When the one or more programs are executed by the at least one processor, a method for simulating temperature difference energy distribution characteristics of a converter valve according to any one of claims 1 to 10 is implemented.

22. A readable storage medium, characterized in that: An execution program is stored thereon, and when the execution program is executed, a method for simulating the temperature difference energy distribution characteristics of a converter valve as described in any one of claims 1 to 10 is implemented.

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