A method, device and storage medium for wildfire early warning

Abstract

This invention discloses a wildfire early warning method, device, and storage medium, applicable to power transmission lines. The method includes: collecting the temperatures of multiple first conductors on the power transmission line at a first preset collection interval; when the temperature difference between two adjacent first conductors exceeds a first preset value, collecting the temperatures of multiple second conductors on the power transmission line at a second preset collection interval, where the second preset collection interval is shorter than the first preset collection interval; determining an abnormal conductor temperature in the power transmission line when the temperature difference between the second conductors and pre-stored historical conductor temperatures exceeds a second preset value; calculating the calculated conductor temperature of the power transmission line; and generating wildfire early warning information when the temperature difference between the second conductors and the calculated conductor temperature exceeds a third preset value. This invention can effectively improve the accuracy of wildfire early warning.

Description

Technical Field

[0001] This invention relates to the field of power transmission line technology, and in particular to a wildfire early warning method, device and storage medium. Background Technology

[0002] Wildfires can easily cause power transmission line tripping accidents. The high temperatures and smoke particles produced by wildfires can reduce the air insulation level of power lines to ground, leading to power line tripping and threatening the safe and stable operation of transmission lines. Furthermore, wildfires spread rapidly and burn intensely, potentially causing extremely serious consequences for the power grid and society. Therefore, effective monitoring methods for early detection and warning of wildfires are crucial for adjusting power grid operation and reducing the losses caused by wildfire disasters to the power system.

[0003] Existing wildfire early warning methods typically rely on meteorological satellite heat source location. However, these methods suffer from low accuracy due to the limited precision of meteorological satellite heat source location, resulting in inaccurate early warnings for wildfires. Summary of the Invention

[0004] This invention provides a wildfire early warning method, device, and storage medium to solve the technical problem that existing wildfire early warning methods are difficult to accurately warn of wildfires due to the low accuracy of meteorological satellite heat source positioning, resulting in low accuracy of wildfire early warning.

[0005] This invention provides a wildfire early warning method applicable to power transmission lines, comprising:

[0006] Temperatures are collected from multiple first conductors on the power transmission line at a first preset sampling interval.

[0007] When the temperature difference between two adjacent first conductors is greater than a first preset value, the temperatures of multiple second conductors on the transmission line are collected at a second preset collection interval, where the second preset collection interval is less than the first preset collection interval.

[0008] When the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than a second preset value, it is determined that the conductor temperature of the power transmission line is abnormal.

[0009] The calculated temperature of the conductor of the power transmission line is calculated. When the temperature difference between the second conductor acquisition temperature and the calculated conductor temperature is greater than a third preset value, a wildfire early warning information is generated.

[0010] Furthermore, the calculation of the conductor temperature of the transmission line includes:

[0011] The calculated temperature of the conductor is obtained based on the conductor mass per unit length, the conductor's equivalent specific heat capacity, the conductor's convective heat dissipation power, the conductor's radiative heat dissipation power, the conductor's allowable current carrying capacity, and the conductor's solar radiation heat dissipation power per unit length.

[0012] Furthermore, the wildfire early warning method also includes:

[0013] The allowable current carrying capacity of the conductor can be calculated based on the radiative heat dissipation power per unit length of conductor, the convective heat dissipation power per unit length of conductor, the solar heat absorption power per unit length of conductor, and the resistivity per unit length of conductor at the allowable temperature of the conductor.

[0014] Furthermore, the wildfire early warning method also includes:

[0015] The radiative heat dissipation power per unit length of conductor is calculated based on the conductor's outer diameter, the conductor's surface radiation heat dissipation coefficient, the conductor's allowable temperature, and the ambient temperature.

[0016] Furthermore, the wildfire early warning method also includes:

[0017] The convective heat dissipation power per unit length of conductor is calculated based on the heat transfer coefficient of the air layer on the conductor surface, the Reynolds number, the wind speed perpendicular to the conductor, the kinematic viscosity of the air layer on the conductor surface, and the outer diameter of the conductor.

[0018] Furthermore, the wildfire early warning method also includes:

[0019] The solar heat absorption power per unit length of conductor is calculated based on the heat absorption coefficient of the conductor surface, the solar radiation intensity on the conductor, and the outer diameter of the conductor.

[0020] This invention also provides a wildfire early warning device, applicable to power transmission lines, comprising:

[0021] The first conductor temperature acquisition module is used to acquire the temperature of multiple first conductors on the transmission line at a first preset acquisition interval.

[0022] The second conductor temperature acquisition module is used to acquire the temperatures of multiple second conductors on the transmission line at a second preset acquisition interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value. The second preset acquisition interval is less than the first preset acquisition interval.

[0023] The conductor temperature anomaly determination module is used to determine that the conductor temperature of the transmission line is abnormal when the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than a second preset value.

[0024] The wildfire early warning information generation module is used to calculate the calculated temperature of the conductors of the power transmission line. When the temperature difference between the second conductor acquisition temperature and the calculated conductor temperature is greater than a third preset value, a wildfire early warning information is generated.

[0025] Furthermore, the wildfire early warning information generation module is also used for:

[0026] The calculated temperature of the conductor is obtained based on the conductor's mass per unit length, equivalent specific heat capacity, convective heat dissipation power, radiative heat dissipation power, allowable current carrying capacity, and solar radiation heat dissipation power per unit length.

[0027] The present invention also provides a terminal device, including: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the wildfire early warning method as described above.

[0028] The present invention also provides a computer-readable storage medium comprising a stored computer program; wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the wildfire early warning method as described above.

[0029] This invention collects the temperature of multiple first conductors on a power transmission line at a first preset collection interval. When the temperature difference between two adjacent first conductors exceeds a first preset value, the collection interval is shortened, and the temperature of the second conductor is collected at a second preset collection interval. This allows for accurate determination of abnormal conductor temperatures on the power transmission line based on the temperature difference between the second conductor temperature and historical conductor temperatures. Furthermore, by calculating the calculated temperature of the power transmission line conductors, wildfire early warning information is generated based on the temperature difference between the second conductor temperature and the calculated conductor temperature, enabling accurate early warning of wildfires and effectively improving the accuracy of wildfire early warning.

[0030] Furthermore, the embodiments of the present invention comprehensively consider factors such as the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convective heat dissipation power of the conductor, the radiative heat dissipation power of the conductor, the allowable current carrying capacity of the conductor, and the solar heat dissipation power per unit length of the conductor, which can accurately calculate the calculated temperature of the conductor, thereby providing accurate and reliable data support for the early warning of wildfires in the power transmission network. Attached Figure Description

[0031] Figure 1 This is a flowchart illustrating the wildfire early warning method provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the wildfire early warning device provided in an embodiment of the present invention. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Please see Figure 1 This invention provides a wildfire early warning method applicable to power transmission lines, comprising:

[0037] S1. Collect the temperature of multiple first conductors on the power transmission line at a first preset collection interval;

[0038] The wildfire early warning method of this invention is applicable to power transmission lines, including ultra-high voltage transmission lines. In this invention, a first preset acquisition interval can be set according to actual needs, for example, the first preset acquisition interval is 1 second, that is, acquisition is performed once every 1 second to obtain multiple first conductor acquisition temperatures.

[0039] S2. When the temperature difference between two adjacent first conductors is greater than the first preset value, the temperature of multiple second conductors on the transmission line is collected at a second preset collection interval, where the second preset collection interval is less than the first preset collection interval.

[0040] In this embodiment of the invention, a first preset value can be set according to actual needs, and the first preset value can be 1°C.

[0041] In this embodiment of the invention, when the temperature difference between two adjacent first conductors is greater than 1°C, a suspected conductor temperature anomaly can be identified. To further determine whether a conductor temperature anomaly exists, the sampling interval is shortened to 0.2 seconds, i.e., the temperatures of multiple second conductors on the transmission line are collected at a second preset sampling interval.

[0042] S3. When the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than the second preset value, it is determined that the conductor temperature of the transmission line is abnormal.

[0043] In this embodiment of the invention, the temperature of the second conductor is collected and compared with the temperature of a historical conductor under the same or similar conditions. The same conditions include the same or similar conditions, such as the same or similar season, time, operating conditions and environmental parameters. If the temperature difference obtained from the comparison is greater than 3°C, it is determined that the conductor temperature of the transmission line is abnormal.

[0044] S4. Calculate the conductor temperature of the transmission line. When the temperature difference between the second conductor temperature and the conductor calculation temperature is greater than the third preset value, generate a wildfire warning.

[0045] In this embodiment of the invention, when the temperature difference between the second conductor's collected temperature and the conductor's calculated temperature is greater than a third preset value, i.e., the temperature difference is greater than 2°C, it is concluded that a wildfire may occur near the transmission line, and a wildfire warning message is generated.

[0046] This invention collects the temperature of multiple first conductors on a power transmission line at a first preset collection interval. When the temperature difference between two adjacent first conductors exceeds a first preset value, the collection interval is shortened, and the temperature of the second conductor is collected at a second preset collection interval. This allows for accurate determination of abnormal conductor temperatures on the power transmission line based on the temperature difference between the second conductor temperature and historical conductor temperatures. Furthermore, by calculating the calculated temperature of the power transmission line conductors, wildfire early warning information is generated based on the temperature difference between the second conductor temperature and the calculated conductor temperature. This enables accurate early warning of wildfires and effectively improves the accuracy of wildfire early warning.

[0047] In one embodiment, step S3, calculating the conductor temperature of the transmission line, includes:

[0048] The calculated temperature of the conductor is obtained based on the conductor mass per unit length, the conductor's equivalent specific heat capacity, the conductor's convective heat dissipation power, the conductor's radiative heat dissipation power, the conductor's allowable current carrying capacity, and the conductor's solar radiation heat dissipation power per unit length.

[0049] In this embodiment of the invention, the formula for calculating the temperature of the conductor can be as follows:

[0050] m·C·(dT C ) / dt=I 2 ·R(T C)+q s -q c -q r

[0051] Where m is the mass of the conductor per unit length, in kg / m; C is the equivalent specific heat capacity of the conductor, in J / (kg·℃); T C Calculate the temperature of the conductor, in °C; q c q represents the convective heat dissipation power of the conductor, expressed in W / m; r q represents the radiative heat dissipation power of the conductor, expressed in W / m. s R(T) represents the solar thermal power per unit length of conductor, expressed in W / m. C () indicates that the conductor temperature is T C The resistivity per unit length of conductor at that time is expressed in Ω / m; the radiative heat dissipation power and solar heat dissipation power of the conductor are determined by the age of the conductor.

[0052] The embodiments of the present invention comprehensively consider factors such as the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convective heat dissipation power of the conductor, the radiative heat dissipation power of the conductor, the allowable current carrying capacity of the conductor, and the solar heat dissipation power per unit length of the conductor, so as to accurately calculate the calculated temperature of the conductor, thereby providing accurate and reliable data support for the early warning of wildfires in power transmission networks.

[0053] In one embodiment, the wildfire early warning method further includes:

[0054] The allowable current carrying capacity of the conductor can be calculated based on the radiative heat dissipation power per unit length of conductor, the convective heat dissipation power per unit length of conductor, the solar heat absorption power per unit length of conductor, and the resistivity per unit length of conductor at the allowable temperature of the conductor.

[0055] In this embodiment of the invention, the allowable current carrying capacity of the conductor can be calculated using the following formula:

[0056]

[0057] Where I represents the allowable current carrying capacity, in amperes (A); W R The radiative heat dissipation power per unit length of conductor, expressed in W / m; W F The convective heat dissipation power per unit length of conductor, expressed in W / m; W s R represents the solar heat absorption power per unit length of conductor, expressed in W / m. t 'Resistivity per unit length of wire at permissible temperature, in Ω / m.'

[0058] In one embodiment, the wildfire early warning method further includes:

[0059] The radiative heat dissipation power per unit length of conductor is calculated based on the conductor's outer diameter, the conductor's surface radiation heat dissipation coefficient, the conductor's allowable temperature, and the ambient temperature.

[0060] In this embodiment of the invention, the radiative heat dissipation power per unit length of the conductor can be calculated using the following formula:

[0061] W R =πDE1S1×[(t+273)] 4 -(t a +273) 4 ]

[0062] Where D is the outer diameter of the conductor, in meters; E1 is the radiation heat dissipation coefficient of the conductor surface, which is 0.23–0.43 for bright new wires and 0.90–0.95 for old wires or wires coated with black anti-corrosion agent; S1 is the Stefan-Boltzmann constant, which is 5.67 × 10⁻⁶. - 8 W / m 2 t represents the allowable temperature of the conductor, in °C. a The ambient temperature is expressed in °C and can be taken as the highest temperature of the month.

[0063] In one embodiment, the wildfire early warning method further includes:

[0064] The convective heat dissipation power per unit length of conductor is calculated based on the heat transfer coefficient of the air layer on the conductor surface, the Reynolds number, the wind speed perpendicular to the conductor, the kinematic viscosity of the air layer on the conductor surface, and the outer diameter of the conductor.

[0065] In this embodiment of the invention, the convective heat dissipation power W per unit length of wire is... F The calculation formula is as follows:

[0066]

[0067] Where, λ f R is the heat transfer coefficient of the air layer on the surface of the conductor, W / (m·℃); e It is the Reynolds number;

[0068] λ f =2.42×10 -2 +7×[(t a +t) / 2]×10 -5

[0069] R e =vD / μ f

[0070] v is the wind speed perpendicular to the conductor, in m / s; μ f m is the kinematic viscosity of the air layer on the surface of the conductor. 2 / s;

[0071] v = 1.32 × 10 -5 +9.6×[(t a +t) / 2]×10 -8 .

[0072] In one embodiment, the wildfire early warning method further includes:

[0073] The solar heat absorption power per unit length of conductor is calculated based on the heat absorption coefficient of the conductor surface, the solar radiation intensity on the conductor, and the outer diameter of the conductor.

[0074] In this embodiment of the invention, the solar heat absorption power W per unit length of conductor is... s It can be calculated using the following formula:

[0075] W s =α s J s D

[0076] Where, α s The heat absorption coefficient of the conductor surface is 0.35–0.46 for bright new wires; and 0.9–0.95 for old wires or wires coated with black anti-corrosion agent. s The solar radiation intensity on the conductor, in W / m 2 When the sun shines directly on the conductor on a sunny day, the sunlight intensity on the conductor can be set at 1000 W / m. 2 .

[0077] This invention, through calculating solar heat absorption power, can more accurately predict the temperature of a conductor under solar conditions. Solar heat absorption power is an important component of the conductor's heat balance equation. By calculating solar heat absorption power, this invention can assess the conductor's heat balance state under different meteorological conditions, thereby ensuring that the conductor operates within a safe temperature range.

[0078] In one embodiment, a data acquisition device can be attached to the power transmission line to collect data such as ambient temperature, wind speed, current carrying capacity, and solar radiation in order to calculate relevant data on conductor temperature.

[0079] In one embodiment, an LSTM model can be used to achieve ultra-short-term wildfire prediction and early warning. Based on experimental data from wildfire simulation experiments focusing on vegetation fires and crown fires, the conductor temperature, simulated wildfire trip voltage, and wildfire trip time obtained from the simulation experiments are standardized, and key features of each parameter are extracted. These features are then normalized and preprocessed. 80% of the data is selected for training the LSTM model, and 20% is used for validation. This model, through multiple gates, allows for the selective retention of simulated wildfire temperature data, thereby constructing an ultra-short-term prediction model based on conductor temperature data and trip voltage and trip time.

[0080] After generating wildfire early warning information, this invention uses real-time conductor temperature as an input parameter and inputs it into the wildfire early warning edge computing intelligent processing module. It applies a pre-trained LSTM wildfire ultra-short-term early warning model to predict the duration of the wildfire's combustion intensification phase, the short-circuit breakdown of the conductor to ground caused by the wildfire, and the changes in conductor temperature. This enables ultra-short-term early warning and refined data processing for wildfires, helping inspection personnel to locate fire points, carry out emergency response work, and achieve proactive voltage reduction and shutdown of transmission lines, thereby effectively improving the safety of transmission lines.

[0081] Implementing the embodiments of the present invention has the following beneficial effects:

[0082] This invention collects the temperature of multiple first conductors on a power transmission line at a first preset collection interval. When the temperature difference between two adjacent first conductors exceeds a first preset value, the collection interval is shortened, and the temperature of the second conductor is collected at a second preset collection interval. This allows for accurate determination of abnormal conductor temperatures on the power transmission line based on the temperature difference between the second conductor temperature and historical conductor temperatures. Furthermore, by calculating the calculated temperature of the power transmission line conductors, wildfire early warning information is generated based on the temperature difference between the second conductor temperature and the calculated conductor temperature. This enables accurate early warning of wildfires and effectively improves the accuracy of wildfire early warning.

[0083] Furthermore, the embodiments of the present invention comprehensively consider factors such as the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convective heat dissipation power of the conductor, the radiative heat dissipation power of the conductor, the allowable current carrying capacity of the conductor, and the solar heat dissipation power per unit length of the conductor, which can accurately calculate the calculated temperature of the conductor, thereby providing accurate and reliable data support for the early warning of wildfires in the power transmission network.

[0084] Please see Figure 2 Based on the same inventive concept as the above embodiments, this embodiment of the invention also provides a wildfire early warning device, applicable to power transmission lines, comprising:

[0085] The first conductor temperature acquisition module 10 is used to acquire the temperature of multiple first conductors on the transmission line at a first preset acquisition interval.

[0086] The second conductor temperature acquisition module 20 is used to acquire the temperatures of multiple second conductors on the transmission line at a second preset acquisition interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value. The second preset acquisition interval is less than the first preset acquisition interval.

[0087] The conductor temperature anomaly determination module 30 is used to determine that the conductor temperature of the transmission line is abnormal when the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than a second preset value.

[0088] The wildfire early warning information generation module 40 is used to calculate the conductor temperature of the power transmission line. When the temperature difference between the second conductor acquisition temperature and the conductor calculation temperature is greater than a third preset value, a wildfire early warning information is generated.

[0089] In one embodiment, the wildfire early warning information generation module 40 is further used for:

[0090] The calculated temperature of the conductor is obtained based on the conductor mass per unit length, the conductor's equivalent specific heat capacity, the conductor's convective heat dissipation power, the conductor's radiative heat dissipation power, the conductor's allowable current carrying capacity, and the conductor's solar radiation heat dissipation power per unit length.

[0091] In one embodiment, the wildfire early warning information generation module 40 is further used for:

[0092] The allowable current carrying capacity of the conductor can be calculated based on the radiative heat dissipation power per unit length of conductor, the convective heat dissipation power per unit length of conductor, the solar heat absorption power per unit length of conductor, and the resistivity per unit length of conductor at the allowable temperature of the conductor.

[0093] In one embodiment, the wildfire early warning information generation module 40 is further used for:

[0094] The radiative heat dissipation power per unit length of conductor is calculated based on the conductor's outer diameter, the conductor's surface radiation heat dissipation coefficient, the conductor's allowable temperature, and the ambient temperature.

[0095] In one embodiment, the wildfire early warning information generation module 40 is further used for:

[0096] The convective heat dissipation power per unit length of conductor is calculated based on the heat transfer coefficient of the air layer on the conductor surface, the Reynolds number, the wind speed perpendicular to the conductor, the kinematic viscosity of the air layer on the conductor surface, and the outer diameter of the conductor.

[0097] In one embodiment, the wildfire early warning information generation module 40 is further used for:

[0098] The solar heat absorption power per unit length of conductor is calculated based on the heat absorption coefficient of the conductor surface, the solar radiation intensity on the conductor, and the outer diameter of the conductor.

[0099] Accordingly, one embodiment of the present invention also provides a terminal device, including: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the wildfire early warning method of any of the above embodiments.

[0100] The terminal device in this embodiment includes a processor, a memory, and a computer program and computer instructions stored in the memory and executable on the processor. When the processor executes the computer program, it implements the various steps described in Embodiment 1 above, for example... Figure 1 Steps S1 to S4 are shown. Alternatively, the processor executes a computer program to implement the functions of each module / unit in the above device embodiment, such as the wildfire early warning information generation module 40.

[0101] For example, a computer program can be divided into one or more modules / units, one or more of which are stored in memory and executed by a processor to complete the present invention. One or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a terminal device. For example, the wildfire warning information generation module 40 is used to calculate the calculated temperature of the power transmission line conductors, and generates wildfire warning information when the temperature difference between the second conductor acquisition temperature and the conductor calculated temperature is greater than a third preset value.

[0102] Terminal devices can be computing devices such as desktop computers, laptops, handheld computers, and cloud servers. Terminal devices may include, but are not limited to, processors and memory. Those skilled in the art will understand that the schematic diagrams are merely examples of terminal devices and do not constitute a limitation on the terminal devices. They may include more or fewer components than illustrated, or combine certain components, or different components. For example, terminal devices may also include input / output devices, network access devices, buses, etc.

[0103] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting all parts of the terminal device through various interfaces and lines.

[0104] Memory can be used to store computer programs and / or modules. The processor implements various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function, etc.; the data storage area may store data created based on the use of the mobile terminal, etc. In addition, memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, smart media cards (SMC), secure digital cards (SD cards), flash cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0105] If the modules / units integrated into the terminal device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0106] Accordingly, one embodiment of the present invention also provides a computer-readable storage medium, which includes a stored computer program, wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the wildfire early warning method of any of the above embodiments.

[0107] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention in detail. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for early warning of wildfires, characterized in that, Applicable to transmission lines, including: Temperatures are collected from multiple first conductors on the power transmission line at a first preset sampling interval. When the temperature difference between two adjacent first conductors is greater than a first preset value, the temperatures of multiple second conductors on the transmission line are collected at a second preset collection interval, where the second preset collection interval is less than the first preset collection interval. When the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than a second preset value, it is determined that the conductor temperature of the power transmission line is abnormal. The calculated temperature of the conductor of the power transmission line is calculated. When the temperature difference between the second conductor acquisition temperature and the calculated conductor temperature is greater than a third preset value, a wildfire early warning information is generated.

2. The wildfire early warning method as described in claim 1, characterized in that, The calculation of the conductor temperature of the transmission line includes: The calculated temperature of the conductor is obtained based on the conductor mass per unit length, the conductor's equivalent specific heat capacity, the conductor's convective heat dissipation power, the conductor's radiative heat dissipation power, the conductor's allowable current carrying capacity, and the conductor's solar radiation heat dissipation power per unit length.

3. The wildfire early warning method as described in claim 2, characterized in that, Also includes: The allowable current carrying capacity of the conductor can be calculated based on the radiative heat dissipation power per unit length of conductor, the convective heat dissipation power per unit length of conductor, the solar heat absorption power per unit length of conductor, and the resistivity per unit length of conductor at the allowable temperature of the conductor.

4. The wildfire early warning method as described in claim 3, characterized in that, Also includes: The radiative heat dissipation power per unit length of conductor is calculated based on the conductor's outer diameter, the conductor's surface radiation heat dissipation coefficient, the conductor's allowable temperature, and the ambient temperature.

5. The wildfire early warning method as described in claim 3, characterized in that, Also includes: The convective heat dissipation power per unit length of conductor is calculated based on the heat transfer coefficient of the air layer on the conductor surface, the Reynolds number, the wind speed perpendicular to the conductor, the kinematic viscosity of the air layer on the conductor surface, and the outer diameter of the conductor.

6. The wildfire early warning method as described in claim 3, characterized in that, Also includes: The solar heat absorption power per unit length of conductor is calculated based on the heat absorption coefficient of the conductor surface, the solar radiation intensity on the conductor, and the outer diameter of the conductor.

7. A wildfire early warning device, characterized in that, Applicable to transmission lines, including: The first conductor temperature acquisition module is used to acquire the temperature of multiple first conductors on the transmission line at a first preset acquisition interval. The second conductor temperature acquisition module is used to acquire the temperatures of multiple second conductors on the transmission line at a second preset acquisition interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value. The second preset acquisition interval is less than the first preset acquisition interval. The conductor temperature anomaly determination module is used to determine that the conductor temperature of the transmission line is abnormal when the temperature difference between the second conductor temperature and the pre-stored historical conductor temperature is greater than a second preset value. The wildfire early warning information generation module is used to calculate the conductor temperature of the power transmission line. When the temperature difference between the second conductor acquisition temperature and the conductor calculation temperature is greater than a third preset value, wildfire early warning information is generated.

8. The wildfire early warning device as described in claim 7, characterized in that, The wildfire early warning information generation module is also used for: The calculated temperature of the conductor is obtained based on the conductor mass per unit length, the conductor's equivalent specific heat capacity, the conductor's convective heat dissipation power, the conductor's radiative heat dissipation power, the conductor's allowable current carrying capacity, and the conductor's solar radiation heat dissipation power per unit length.

9. A terminal device, characterized in that, include: A processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the wildfire early warning method as described in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program; wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the wildfire early warning method as described in any one of claims 1-6.

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