Cable anti-icing device, method and equipment based on ice melting assembly

Abstract

The invention discloses a cable anti-icing device, method and equipment based on an ice melting assembly, and belongs to the technical field of electric power facilities. The device comprises a tension data acquisition module which is used for acquiring cable tension data between cable racks when it is identified that a cable satisfies an icing condition; the working instruction generation module is used for generating a working instruction of a heating assembly between the cable racks under the condition that the cable tension data exceeds a preset tension threshold value; and the cable heating module is used for controlling a heating assembly to perform heating operation according to the working instruction, so that an ice layer attached to the surface of the cable is melted and falls off. According to the technical scheme, the heating assembly is controlled to perform heating operation under the condition that the cable meets the icing condition and the cable tension data exceeds the preset tension threshold, so that an ice layer attached to the surface of the cable can be melted and fall off, the adverse effect of icing on cable operation is reduced, and safe and stable operation of a power system is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to a cable anti-icing device, method and equipment based on an ice melting component. Background Art

[0002] In winter, when the ambient temperature of the cable drops below freezing and the air humidity is high, the water vapor in the atmosphere will quickly condense into ice on the surface of the cable after it is cooled. As time goes by, the thickness of the ice continues to accumulate, and the weight of the cable increases sharply, which will not only cause the cable to sag and deform seriously, but may also further cause catastrophic accidents such as the tilt or even collapse of the tower, thereby interrupting power transmission. In addition, ice will also have an adverse effect on the electrical performance of the cable, significantly increase line losses, and greatly increase the failure rate, which seriously threatens the reliability and stability of the cable.

[0003] However, currently, the main method is to manually inspect the cables to understand the icing condition of the cables and take de-icing measures. However, manual inspection contains subjective factors and cannot accurately determine the icing condition of the cables. The selection of de-icing measures is often based on experience and judgment, which may lack scientificity and accuracy, thus affecting the de-icing efficiency and the safe operation of the cables. In addition, manual de-icing consumes a lot of manpower and is very inefficient, making it difficult to meet the needs of rapid response and efficient maintenance of large-scale power grids. Therefore, how to automatically identify whether the cable surface is covered with ice and timely control the operation of the heating component to realize the automation of de-icing operations is a problem that people in this field urgently need to solve. Summary of the invention

[0004] The embodiments of the present application provide a cable anti-icing device, method and equipment based on an ice melting component, the purpose of which is to melt and drop the ice layer attached to the cable surface, reduce the adverse effects of icing on cable operation, and ensure the safe and stable operation of the power system.

[0005] In a first aspect, an embodiment of the present application provides a cable anti-icing device based on an ice melting assembly, the device comprising:

[0006] A tension data acquisition module, used to acquire cable tension data between cable racks when it is identified that the cable meets ice-covering conditions;

[0007] A working instruction generating module, used for generating working instructions for the heating components between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating components are resistance wires pre-set inside the cables and capable of receiving control signals, and the extended length of the resistance wires exceeds the adjacent distance between two adjacent cables;

[0008] The cable heating module is used to control the heating component to perform heating operations according to the working instructions so as to melt and drop the ice layer attached to the cable surface.

[0009] In a second aspect, an embodiment of the present application provides a cable anti-icing method based on an ice melting assembly, the method comprising:

[0010] When the cable meets the ice covering condition, the cable tension data between the cable racks is obtained by the tension data acquisition module;

[0011] When the cable tension data exceeds a preset tension threshold, a working instruction generating module generates a working instruction for the heating component between the cable racks; wherein the heating component is a resistance wire pre-set inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables;

[0012] The cable heating module controls the heating component to perform heating operation according to the working instruction, so that the ice layer attached to the cable surface melts and falls off.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0014] In an embodiment of the present application, a tension data acquisition module is used to acquire cable tension data between cable racks when it is identified that the cable meets the icing condition; a work instruction generation module is used to generate a work instruction for the heating component between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating component is a resistance wire that is pre-set inside the cable and can receive a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables; a cable heating module is used to control the heating component to perform a heating operation according to the work instruction, so that the ice layer attached to the cable surface melts and falls off. The above-mentioned cable anti-icing device based on the ice melting component can melt and fall off the ice layer attached to the cable surface by controlling the heating component to perform a heating operation when the cable meets the icing condition and the cable tension data exceeds the preset tension threshold, thereby reducing the adverse effects of icing on the cable operation and ensuring the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a cable anti-icing device based on an ice melting assembly provided in Example 1 of the present application;

[0016] Figure 2It is a structural schematic diagram of a cable anti-icing device based on an ice melting assembly provided in Example 2 of the present application;

[0017] Figure 3 It is a structural schematic diagram of a cable anti-icing device based on an ice melting assembly provided in Example 3 of the present application;

[0018] Figure 4 It is a flow chart of a cable anti-icing method based on an ice melting component provided in Example 4 of the present application;

[0019] Figure 5 It is a schematic diagram of the structure of an electronic device provided in Example 5 of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all of the content is shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] In the following, in conjunction with the accompanying drawings, the cable anti-icing device, method and equipment based on the ice melting component provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0024] Embodiment 1

[0025] Figure 1 Schematic diagram of the structure of the cable anti-icing device based on the ice melting assembly provided in the first embodiment of the present application. Figure 1 As shown, the device comprises:

[0026] A tension data acquisition module 110 is used to acquire cable tension data between cable racks when it is identified that the cable meets the ice covering condition;

[0027] A work instruction generating module 120 is used to generate a work instruction for the heating component between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating component is a resistance wire pre-set inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables;

[0028] The cable heating module 130 is used to control the heating component to perform a heating operation according to the working instruction, so as to melt and drop the ice layer attached to the cable surface.

[0029] This application is applicable to scenarios where it is winter or rain, snow, fog and other weather conditions within a certain temperature range, and the cable may be attached with rain, snow or ice. Specifically, the acquisition of cable tension data, the generation of work instructions and the control of the heating component can be performed by the intelligent terminal device, and the heating component performs heating operations to melt the ice layer attached to the cable surface.

[0030] Based on the above usage scenarios, it can be understood that the executor of the present application can be a smart terminal device, such as a desktop computer, a laptop computer, a mobile phone, a tablet computer, and interactive multimedia, etc., and no excessive limitations are made here.

[0031] The tension data acquisition module 110 is used to acquire cable tension data between cable racks when it is identified that the cable meets the ice covering condition.

[0032] A cable is a device used to transmit power or signals. A cable rack is a structural device used to support and secure cables.

[0033] The icing condition may describe a situation where ice may form on the surface of the cable. The method for identifying whether the cable meets the icing condition may be to obtain temperature data and humidity data of the cable surrounding environment, and determine that the cable meets the icing condition when the temperature data is lower than a preset temperature threshold and the humidity data exceeds a preset humidity threshold.

[0034] Cable tension data may refer to the tension applied to the cable between two cable racks, and the cable tension data between the cable racks may be obtained through a tension sensor, which is a device that can convert the physical quantity of tension applied to it into a measurable electrical signal or other output signal.

[0035] The work instruction generating module 120 is used to generate a work instruction for the heating assembly between the cable racks when the cable tension data exceeds a preset tension threshold.

[0036] The preset tension threshold may be a preset lower limit of cable tension data indicating that the amount of rain, snow and / or ice attached to the cable surface may affect the normal operation of the cable and thus needs to be processed.

[0037] The heating component may refer to a device that can generate heat to melt the rain, snow and / or ice attached to the cable surface, such as a resistance wire pre-set inside the cable that can receive a control signal.

[0038] The resistance wire is a metal wire with a certain resistance value. Its main characteristic is that it can generate heat according to Joule's law when current passes through it. The resistance wire can be pre-arranged inside the cable by arranging the resistance wire along the central axis of the cable. This arrangement is conducive to evenly spreading the heat around the cable.

[0039] The extended length of the resistance wire may refer to the length of the portion of the resistance wire that is not inside the cable. The adjacent distance may refer to the shortest distance between two adjacent cables. The extended length of the resistance wire exceeds the adjacent distance between two adjacent cables, which can ensure that heat can be radiated to the space between the two adjacent cables, thereby melting the ice layer between the two adjacent cables.

[0040] The working instruction can be a high-level operation command for controlling the working state of the resistance wire (such as turning on, off or adjusting the heating power, etc.). The control signal can be an electrical signal form of the working instruction, such as a digital signal or an analog signal. The two ends of the resistance wire can be directly connected to the control circuit, and the control circuit controls the heating power of the resistance wire by changing the output voltage or current; or, the control signal can be transmitted to the resistance wire through an intermediate control device (such as a solid-state relay, a power transistor, etc.).

[0041] The method of generating the working instructions of the heating components between the cable racks can be to obtain the specification parameters of the cable, determine the initial heating power of the heating components according to the specification parameters, and generate the working instructions of the heating components between the cable racks according to the initial heating power.

[0042] The cable heating module 130 is used to control the heating component to perform a heating operation according to the working instruction, so as to melt and drop the ice layer attached to the cable surface.

[0043] The heating component is controlled to perform heating operation according to the work instruction. The heating component can be controlled to perform heating operation according to the initial heating power to melt and drop the ice layer attached to the cable surface.

[0044] In this technical solution, optionally, the device further includes:

[0045] The heating abnormality control module is used to control the heating component to stop the heating operation when the current data and / or voltage data of the cable exceeds a preset fluctuation range.

[0046] Current data can refer to the amount of charge passing through the conductor cross section of the cable per unit time. Current data can be obtained through devices such as ammeters or current sensors.

[0047] Voltage data represents the work done by the electric field force when a unit positive charge moves from one point in the electric field to another. Voltage data can be obtained by devices such as voltmeters or voltage sensors.

[0048] The preset fluctuation range can be a preset interval in which the current data and / or voltage data are allowed to fluctuate up and down. It is understandable that if the current data and / or voltage data of the cable exceeds the preset fluctuation range, it means that the current operating state of the cable is not good, and the heating component needs to be controlled to stop the heating operation.

[0049] The advantage of this arrangement of the present scheme is that by controlling the heating component to stop the heating operation when the current data and / or voltage data of the cable exceeds the preset fluctuation range, it is possible to effectively avoid the safety hazards that may be caused by continued heating under abnormal conditions of the cable, thereby protecting the safe and stable operation of the cable and the heating component.

[0050] In the example of the present application, the tension data acquisition module is used to obtain the cable tension data between the cable racks when it is identified that the cable meets the icing condition; the work instruction generation module is used to generate the work instruction of the heating component between the cable racks when the cable tension data exceeds the preset tension threshold; wherein the heating component is a resistance wire that can receive a control signal and is pre-set inside the cable, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables; the cable heating module is used to control the heating component to perform heating operation according to the work instruction, so that the ice layer attached to the cable surface melts and falls off. This technical solution, by controlling the heating component to perform heating operation when the cable meets the icing condition and the cable tension data exceeds the preset tension threshold, can melt and fall the ice layer attached to the cable surface, reduce the adverse effects of icing on the cable operation, and ensure the safe and stable operation of the power system.

[0051] Embodiment 2

[0052] Figure 2 This is a schematic diagram of the structure of the cable anti-icing device based on the ice melting component provided in the second embodiment of the present application. This solution has made better improvements on the basis of the above embodiment, and the specific improvements are as follows: the cable heating module includes: an initial heating unit, which is used to control the heating component to perform heating operation according to the initial heating power according to the working instruction; a power adjustment unit, which is used to adjust the heating power of the heating component according to the change speed of the cable tension data.

[0053] like Figure 2 As shown, the device comprises:

[0054] The tension data acquisition module 210 is used to acquire the cable tension data between the cable racks when it is identified that the cable meets the ice covering condition;

[0055] A work instruction generating module 220 is used to generate a work instruction for the heating component between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating component is a resistance wire pre-set inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables;

[0056] The cable heating module 230 is used to control the heating component to perform a heating operation according to the working instruction, so as to melt and drop the ice layer attached to the cable surface.

[0057] Wherein, the cable heating module 230 comprises:

[0058] An initial heating unit 2301 is used to control the heating component to perform a heating operation according to the initial heating power according to the working instruction;

[0059] The power adjustment unit 2302 is used to adjust the heating power of the heating component according to the change speed of the cable tension data.

[0060] Heating power may refer to the ability of a heating component to convert electrical energy into thermal energy per unit time.

[0061] The initial heating power may refer to the heating power of the heating component when the heating operation starts. The heating component may be controlled to perform the heating operation according to the initial heating power according to the work instruction, and the output voltage or current may be changed to make the heating power of the heating component reach the initial heating power.

[0062] In this technical solution, optionally, the work instruction generation module is specifically used to:

[0063] Obtaining specification parameters of the cable; wherein the specification parameters include insulation layer thickness and insulation layer thermal conductivity;

[0064] The initial heating power of the heating component is determined according to the specification parameters, and the working instructions of the heating component between the cable racks are generated according to the initial heating power.

[0065] Specifications can be a set of quantitative information used to describe various characteristics and technical indicators of cables. Specifications can include insulation thickness and insulation thermal conductivity. The insulation layer is an insulating material that isolates the conductor from the external environment and other conductors to prevent current leakage and short circuits between different phases. The thickness of the insulation layer can refer to the vertical distance from the inner surface of the insulation layer in contact with the conductor to the outer surface. Thermal conductivity is a thermophysical property of the material, which indicates the amount of heat passing through a unit area per unit time under a unit temperature gradient. The insulation thermal conductivity is the thermal conductivity of the insulation material used in the insulation layer. The specifications of the cable can be obtained by referring to the cable's product manual or technical manual and other explanatory documents.

[0066] The method of determining the initial heating power of the heating component according to the specification parameters can be adopted to construct a heat conduction equation according to parameters such as the thickness of the insulation layer, the thermal conductivity of the insulation layer, the outer diameter and length of the cable, the ambient temperature, and the upper limit of the safe temperature for normal operation of the cable. By solving the equation, the heat required to increase the surface temperature of the cable from the ambient temperature to a temperature close to the upper limit of the safe temperature is obtained. The initial heating power of the heating component is calculated according to the relationship between the heat and the heating power, and the working instructions of the heating component between the cable racks are generated according to the initial heating power.

[0067] Here is a sample code to determine the initial heating power of a heating element based on the specification parameters:

[0068] #define symbol variables

[0069] d = sympy.Symbol ('d') #Insulation layer thickness (unit: meter, example assumption, actual conversion based on specific units)

[0070] lambda_=sympy.Symbol('lambda_') # Thermal conductivity of insulation layer (unit: watt per meter Kelvin)

[0071] D = sympy.Symbol ('D') # Cable outer diameter (unit: meter)

[0072] L = sympy.Symbol ('L') # Cable length (unit: meter)

[0073] T0 = ​​sympy.Symbol('T0') # ambient temperature (unit: Kelvin)

[0074] T_max = sympy.Symbol('T_max') # upper limit of safe temperature for normal operation of the cable (unit: Kelvin)

[0075] t = sympy.Symbol('t') # expected heating time (in seconds)

[0076] #Heat conduction equation example (here is a simple one-dimensional heat conduction model, which may be more complicated in practice) #According to Fourier's law of heat conduction, the heat flow Q is related to the temperature gradient, thermal conductivity, area, etc. #Assume that heat conduction is along the radial direction of the cable, and heat is conducted through the insulation layer #The simplified calculation area is the side area of ​​the cable (circumference multiplied by length), which may need to be considered more accurately in practice

[0077] area=sympy.pi*D*L#temperature difference

[0078] delta_T=T_max-T0#Heat conduction equation, here simply expressed as Q through the thermal conductivity, area, temperature difference and insulation thickness related formula#This is just a schematic, the actual heat conduction equation may be more complicated and needs to be accurately constructed according to physical principles

[0079] Q = lambda_*area*delta_T / d

[0080] #According to the relationship between heat and power Q = P*t, solve the power P

[0081] P=sympy.solve(sympy.Eq(Q,P*t),P)[0]

[0082] #Assume that a specific parameter value example is given (this needs to be replaced with the actual measured or project set value)

[0083] d_value=0.01# Example: Insulation layer thickness value, unit: meter

[0084] lambda_value = 0.3 # Example of thermal conductivity value of insulation layer, unit: Watt per meter Kelvin

[0085] D_value=0.1#Example cable outer diameter value, unit: meter

[0086] L_value=100#Example cable length value, unit: meter

[0087] T0_value = 273 # Example ambient temperature value, unit: Kelvin (0 degrees Celsius conversion)

[0088] T_max_value=300#Example: The upper limit of safe temperature for normal operation of the cable, unit: Kelvin

[0089] t_value = 600 # Example heating time, unit: second

[0090] #Substitute the specific value into the power expression to calculate the power

[0091] P_value=P.subs({d:d_value,lambda_:lambda_value,D:D_value,L:L_value,T0:T0_value,T_max:T_max_value,t:t_value})

[0092] print("Calculated initial heating power (unit: watt):",P_value)

[0093] The benefit of this arrangement of the present solution is that by determining the initial heating power of the heating component according to the specification parameters and generating the working instructions of the heating component between the cable racks according to the initial heating power, the thermal conductivity characteristics of the cable itself can be fully considered to achieve accurate and efficient cable icing treatment.

[0094] The change speed of the cable tension data may refer to the change value of the cable tension data in a unit time. The method of adjusting the heating power of the heating component according to the change speed of the cable tension data may be to reduce the heating power of the heating component when the change speed of the cable tension data exceeds the reference speed, or to increase the heating power of the heating component when the change speed of the cable tension data is less than the reference speed.

[0095] In the technical solution, optionally, the power adjustment unit is specifically used to:

[0096] Acquire cable tension data between cable racks during the heating operation of the heating component, and determine the change speed of the cable tension data;

[0097] When the speed of change of the cable tension data exceeds a reference speed, reducing the heating power of the heating component; wherein the reference speed is the speed of change of the cable tension data before the heating component performs a heating operation;

[0098] or,

[0099] When the changing speed of the cable tension data is lower than the reference speed, the heating power of the heating component is increased.

[0100] The cable tension data between the cable racks during the heating operation of the heating component is obtained, and the changing speed of the cable tension data is determined. The cable tension data between the cable racks during the heating operation of the heating component can be obtained according to a preset period, the difference between the cable tension data obtained in adjacent preset periods is calculated, and the difference is divided by the preset period to obtain the changing speed of the cable tension data.

[0101] The reference speed is the speed of change of the cable tension data before the heating component performs the heating operation. It can be understood that if the change speed of the cable tension data exceeds the reference speed, it means that the cable ice melting speed is fast, the weight of the ice layer is rapidly reduced, and the decrease in the cable tension in unit time increases, which means that the current heating power may be relatively too high. Continuing to maintain it may cause energy waste and unnecessary thermal stress and potential damage risks to equipment such as cables and heating components. Therefore, it is necessary to reduce the heating power of the heating component to achieve more reasonable energy utilization and equipment protection; while the change speed of the cable tension data is less than the reference speed, it indicates that the cable ice melting is slow, and the ice layer does not significantly relieve the tension of the cable. It may be that the heating power is insufficient and it is difficult to effectively deal with the current ice condition. Therefore, it is necessary to increase the heating power of the heating component to enhance the ice melting effect, ensure that the cable can return to normal operation as soon as possible, and reduce the impact of long ice time on the stability of power transmission.

[0102] The advantage of such a setting of the present scheme is that by reducing the heating power of the heating component when the speed of change of the cable tension data exceeds the reference speed, it is possible to avoid energy waste caused by excessive heating and potential damage to components such as the cable insulation layer. By increasing the heating power of the heating component when the speed of change of the cable tension data is less than the reference speed, it is possible to timely increase the heating power when the ice melting effect is poor, thereby ensuring that the ice melting operation is carried out continuously and efficiently.

[0103] The benefit of this arrangement is that by controlling the heating component to perform heating operations according to the initial heating power and adjusting the heating power of the heating component according to the changing speed of the cable tension data, this dynamic adjustment of the heating power can not only maximize the ice melting efficiency and ensure the safe and stable operation of the cable in an ice-covered environment, but also optimize energy utilization, reduce unnecessary electricity consumption, reduce operating costs and extend the service life of the cable.

[0104] Embodiment 3

[0105] Figure 3 It is a structural schematic diagram of a cable anti-icing device based on an ice melting component provided in Example 3 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the tension data acquisition module is specifically used to: obtain the cable length and the spacing distance between the cable racks, and determine the first tension compensation coefficient according to the cable length and the spacing distance; when it is identified that the cable meets the icing condition, obtain the cable tension data between the cable racks; determine the calibration tension data according to the cable tension data and the first tension compensation coefficient; accordingly, the work instruction generation module is specifically used to: when the calibration tension data exceeds the preset tension threshold, generate the work instruction of the heating component between the cable racks; wherein the heating component is a resistance wire pre-set inside the cable that can receive a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables.

[0106] like Figure 3 As shown, the device comprises:

[0107] A tension data acquisition module 310 is used to acquire cable tension data between cable racks when it is identified that the cable meets the ice covering condition;

[0108] A working instruction generating module 320 is used to generate working instructions for the heating components between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating components are resistance wires pre-set inside the cables and capable of receiving control signals, and the extended length of the resistance wires exceeds the adjacent distance between two adjacent cables;

[0109] The cable heating module 330 is used to control the heating component to perform a heating operation according to the working instruction, so as to melt and drop the ice layer attached to the cable surface.

[0110] The tension data acquisition module 310 is specifically used for:

[0111] Acquire the cable length and the spacing distance between the cable racks, and determine a first tension compensation coefficient according to the cable length and the spacing distance;

[0112] When it is identified that the cable meets the ice-covering condition, the cable tension data between the cable racks are obtained;

[0113] Determine calibration tension data according to the cable tension data and the first tension compensation coefficient;

[0114] Accordingly, the work instruction generating module 320 is specifically used for:

[0115] When the calibration tension data exceeds a preset tension threshold, a working instruction for the heating component between the cable racks is generated; wherein the heating component is a resistance wire pre-arranged inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables.

[0116] The cable length may refer to the actual length of the cable from one end to the other end, and the cable length can be obtained by referring to the cable product specification or technical manual and other descriptive documents; the spacing distance between cable racks may refer to the straight-line distance between two adjacent cable racks, and the spacing distance between cable racks can be obtained by referring to the cable laying design documents, etc.

[0117] The first tension compensation coefficient can be a coefficient used to compensate for the influence of the cable length and the spacing distance between the cable racks on the cable tension data. According to the method of determining the first tension compensation coefficient based on the cable length and the spacing distance, a force model of the cable under its own gravity can be constructed based on the principle of mechanics, and the cable can be regarded as a catenary or an approximate parabola model under a uniformly distributed load. Through in-depth analysis and deduction of the model, a theoretical correlation function between the cable tension data and the cable length and spacing distance is obtained, and the first tension compensation coefficient is calculated based on the theoretical correlation function.

[0118] The calibration tension data may refer to the cable tension data after compensation and correction. The calibration tension data may be determined according to the cable tension data and the first tension compensation coefficient by multiplying the cable tension data by the first tension compensation coefficient to obtain the calibration tension data.

[0119] The advantage of this arrangement of the present scheme is that by determining the first tension compensation coefficient based on the cable length and the spacing distance, and determining the calibration tension data based on the cable tension data and the first tension compensation coefficient, the tension deviation caused by the cable's own structural layout can be effectively corrected, thereby significantly improving the accuracy of judging the actual stress state of the cable.

[0120] In this technical solution, optionally, the tension data acquisition module is specifically used to:

[0121] Acquire wind data of the cable surrounding environment; wherein the wind data includes wind speed data and wind direction data;

[0122] Calculating the angle between the wind direction data and the cable;

[0123] Determine a second tension compensation coefficient according to the wind speed data and the angle;

[0124] When it is identified that the cable meets the ice-covering condition, the cable tension data between the cable racks are obtained;

[0125] Determine calibration tension data according to the cable tension data and the second tension compensation coefficient;

[0126] Accordingly, the work instruction generation module is specifically used for:

[0127] When the calibration tension data exceeds a preset tension threshold, a working instruction for the heating component between the cable racks is generated; wherein the heating component is a resistance wire pre-arranged inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables.

[0128] Wind force data can be a collection of relevant information used to describe the characteristics of wind, and can include wind speed data and wind direction data. Wind speed data can refer to the speed of the wind in the environment where the cable is located, and wind speed data can be obtained through an anemometer; wind direction data can refer to the direction of the wind, and the wind direction is generally expressed in azimuth, for example, 0 degrees represents north wind, 90 degrees represents east wind, etc., and wind direction data can be obtained through a wind vane.

[0129] The angle between the wind direction data and the cable may refer to the angle formed between the wind direction and the axial direction of the cable. The angle between the wind direction data and the cable may be calculated by determining the axial direction of the cable according to the positions of two adjacent cable racks, and calculating the angle between the wind direction data and the axial direction of the cable.

[0130] The second tension compensation coefficient may be a coefficient used to compensate for the influence of wind factors on the cable tension data. The second tension compensation coefficient may be determined according to the wind speed data and the angle, and the magnitude of the wind force may be determined according to the wind speed data, and then the wind force may be decomposed into an axial component according to the angle, and a reference tension of the cable under normal conditions such as no wind level may be set, and the second tension compensation coefficient may be determined according to the ratio of the reference tension to the reference tension plus the wind along the cable axial component.

[0131] The calibration tension data may be determined according to the cable tension data and the second tension compensation coefficient. The calibration tension data may be obtained by multiplying the cable tension data by the second tension compensation coefficient.

[0132] Here is a sample code for determining calibration pull data:

[0133]

[0134]

[0135]

[0136] The advantage of this arrangement of the present scheme is that by determining the second tension compensation coefficient based on the angle between the wind speed data and the wind direction data and the cable, and determining the calibration tension data based on the cable tension data and the second tension compensation coefficient, the tension data can reflect the actual tension level of the cable under the action of wind, thereby providing accurate data support for the adjustment of the heating power.

[0137] Embodiment 4

[0138] Figure 4 Schematic diagram of the process of the cable anti-icing method based on the ice melting component provided in the fourth embodiment of the present application. Figure 4 As shown, the specific steps include:

[0139] S401, obtaining cable tension data between cable racks through a tension data acquisition module when it is identified that the cable meets the ice covering condition;

[0140] S402, generating a working instruction for the heating component between the cable racks by a working instruction generating module when the cable tension data exceeds a preset tension threshold; wherein the heating component is a resistance wire pre-set inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables;

[0141] S403, controlling the heating component to perform heating operation according to the working instruction through the cable heating module, so as to melt and drop the ice layer attached to the cable surface.

[0142] In an embodiment of the present application, the tension data acquisition module acquires the cable tension data between the cable racks when it is identified that the cable meets the icing condition; the work instruction generation module generates the work instruction of the heating component between the cable racks when the cable tension data exceeds the preset tension threshold; wherein the heating component is a resistance wire that can receive a control signal and is pre-set inside the cable, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables; the cable heating module controls the heating component to perform heating operation according to the work instruction, so that the ice layer attached to the cable surface melts and falls off. The above-mentioned cable anti-icing method based on the ice melting component can melt and fall off the ice layer attached to the cable surface by controlling the heating component to perform heating operation when the cable meets the icing condition and the cable tension data exceeds the preset tension threshold, thereby reducing the adverse effects of icing on the cable operation and ensuring the safe and stable operation of the power system.

[0143] The cable anti-icing method based on the ice melting component provided in the embodiment of the present application corresponds to the cable anti-icing device based on the ice melting component provided in the above embodiment, has the same functional modules and beneficial effects, and will not be described again here to avoid repetition.

[0144] Embodiment 5

[0145] like Figure 5 As shown, an embodiment of the present application further provides an electronic device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, each process of the above-mentioned cable anti-icing device embodiment based on the ice melting component is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0146] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0147] Embodiment 6

[0148] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned cable anti-icing device embodiment based on the ice melting component are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0149] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0150] Embodiment 7

[0151] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned cable anti-icing device embodiment based on the ice melting component, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0152] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0153] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0154] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0155] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0156] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A cable anti-icing device based on an ice melting assembly, characterized in that: The device comprises: A tension data acquisition module, used to acquire cable tension data between cable racks when it is identified that the cable meets ice-covering conditions; A working instruction generating module, used for generating working instructions for the heating components between the cable racks when the cable tension data exceeds a preset tension threshold; wherein the heating components are resistance wires pre-set inside the cables and capable of receiving control signals, and the extended length of the resistance wires exceeds the adjacent distance between two adjacent cables; The cable heating module is used to control the heating component to perform heating operations according to the working instructions so as to melt and drop the ice layer attached to the cable surface.

2. The cable anti-icing device based on the ice melting assembly according to claim 1 is characterized in that: The device also includes: The heating abnormality control module is used to control the heating component to stop the heating operation when the current data and / or voltage data of the cable exceeds a preset fluctuation range.

3. The cable anti-icing device based on the ice melting assembly according to claim 1 is characterized in that: The cable heating module comprises: An initial heating unit, used to control the heating component to perform a heating operation according to the initial heating power according to the working instruction; A power adjustment unit is used to adjust the heating power of the heating component according to the change speed of the cable tension data.

4. The cable anti-icing device based on the ice melting assembly according to claim 3 is characterized in that: The work instruction generation module is specifically used for: Obtaining specification parameters of the cable; wherein the specification parameters include insulation layer thickness and insulation layer thermal conductivity; The initial heating power of the heating component is determined according to the specification parameters, and the working instructions of the heating component between the cable racks are generated according to the initial heating power.

5. The cable anti-icing device based on the ice melting assembly according to claim 3 is characterized in that: The power adjustment unit is specifically used for: Acquire cable tension data between cable racks during the heating operation of the heating component, and determine the change speed of the cable tension data; When the speed of change of the cable tension data exceeds a reference speed, reducing the heating power of the heating component; wherein the reference speed is the speed of change of the cable tension data before the heating component performs a heating operation; or, When the changing speed of the cable tension data is lower than the reference speed, the heating power of the heating component is increased.

6. The cable anti-icing device based on the ice melting assembly according to claim 1 is characterized in that: The tension data acquisition module is specifically used for: Acquire the cable length and the spacing distance between the cable racks, and determine a first tension compensation coefficient according to the cable length and the spacing distance; When it is identified that the cable meets the ice-covering condition, the cable tension data between the cable racks are obtained; Determine calibration tension data according to the cable tension data and the first tension compensation coefficient; Accordingly, the work instruction generation module is specifically used for: When the calibration tension data exceeds a preset tension threshold, a working instruction for the heating component between the cable racks is generated; wherein the heating component is a resistance wire pre-arranged inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables.

7. The cable anti-icing device based on the ice melting assembly according to claim 1 is characterized in that: The tension data acquisition module is specifically used for: Acquire wind data of the cable surrounding environment; wherein the wind data includes wind speed data and wind direction data; Calculating the angle between the wind direction data and the cable; Determine a second tension compensation coefficient according to the wind speed data and the angle; When it is identified that the cable meets the ice-covering condition, the cable tension data between the cable racks are obtained; Determine calibration tension data according to the cable tension data and the second tension compensation coefficient; Accordingly, the work instruction generation module is specifically used for: When the calibration tension data exceeds a preset tension threshold, a working instruction for the heating component between the cable racks is generated; wherein the heating component is a resistance wire pre-arranged inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables.

8. A cable anti-icing method based on an ice melting assembly, characterized in that: The method comprises: When the cable meets the ice covering condition, the cable tension data between the cable racks is obtained by the tension data acquisition module; When the cable tension data exceeds a preset tension threshold, a working instruction generating module generates a working instruction for the heating component between the cable racks; wherein the heating component is a resistance wire pre-set inside the cable and capable of receiving a control signal, and the extended length of the resistance wire exceeds the adjacent distance between two adjacent cables; The cable heating module controls the heating component to perform heating operation according to the working instruction, so that the ice layer attached to the cable surface melts and falls off.

9. The cable anti-icing method based on the ice melting assembly according to claim 8, characterized in that: After the cable heating module controls the heating assembly to perform heating according to the working instruction so that the ice layer attached to the cable surface melts and falls off, the method further includes: The heating abnormality control module controls the heating component to stop heating operation when the current data and / or voltage data of the cable exceeds a preset fluctuation range.

10. An electronic device, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the cable anti-icing method based on an ice melting component as described in any one of claims 8 to 9 are implemented.

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