Forest fire early warning method and device and storage medium

Abstract

The invention discloses a forest fire early warning method and device and a storage medium, and is suitable for a power transmission line, and the method comprises the steps: collecting a plurality of first lead collection temperatures on the power transmission line at a first preset collection interval; when the temperature difference of the collection temperatures of every two adjacent first wires is larger than a first preset value, the collection temperatures of multiple second wires on the power transmission line are collected at a second preset collection interval, and the second preset collection interval is smaller than the first preset collection interval; when the temperature difference between the second wire collection temperature and the pre-stored historical wire temperature is greater than a second preset value, determining that the wire temperature of the power transmission line is abnormal; and calculating the wire calculation temperature of the power transmission line, and generating forest fire early warning information when the temperature difference between the second wire collection temperature and the wire calculation temperature is greater than a third preset value. The accuracy of forest fire early warning can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission lines, and in particular to a forest fire early warning method, device and storage medium. Background Art

[0002] Wildfires can easily cause power transmission lines to trip. The high temperature of wildfires and the smoke particles produced by burning can reduce the air insulation level of the line to the ground, causing the transmission line to trip, threatening the safe and stable operation of the transmission line. Wildfires spread quickly and burn with great intensity, which can easily cause extremely serious consequences to the power grid and society. Therefore, early detection of wildfires and early warning through effective monitoring methods is conducive to adjusting the operation mode of the power grid and reducing the losses caused by wildfire disasters to the power system.

[0003] Existing wildfire warning methods are usually implemented through meteorological satellite heat source positioning. However, due to the low accuracy of meteorological satellite heat source positioning, existing wildfire warning methods are difficult to accurately warn of wildfires, resulting in low accuracy of wildfire warnings. Summary of the invention

[0004] The present invention provides a forest fire warning method, device and storage medium to solve the technical problem that the existing forest fire warning method is difficult to accurately warn of forest fires due to the low accuracy of meteorological satellite heat source positioning, resulting in low accuracy of forest fire warning.

[0005] The present invention provides a forest fire early warning method applicable to power transmission lines, comprising:

[0006] Collecting temperatures of a plurality of first conductors on the transmission line at a first preset collection interval;

[0007] When the temperature difference between the collected temperatures of two adjacent first conductors is greater than a first preset value, collecting the collected temperatures of multiple second conductors on the transmission line at a second preset collection interval, wherein the second preset collection interval is smaller than the first preset collection interval;

[0008] When the temperature difference between the second conductor collected temperature and the pre-stored historical conductor temperature is greater than a second preset value, determining that the conductor temperature of the transmission line is abnormal;

[0009] The calculated temperature of the conductor of the transmission line is calculated, and when the temperature difference between the second conductor collected temperature and the calculated temperature of the conductor is greater than a third preset value, a forest fire warning information is generated.

[0010] Further, the calculating of the conductor temperature of the transmission line includes:

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

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

[0013] The allowable current carrying capacity of the conductor is calculated based on the radiation heat dissipation power of the conductor per unit length, the convection heat dissipation power of the conductor per unit length, the sunlight heat absorption power of the conductor per unit length and the resistivity of the conductor per unit length at the allowable temperature of the conductor.

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

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

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

[0017] The convective heat dissipation power per unit length of the 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 mountain fire early warning method also includes:

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

[0020] The embodiment of the present invention further provides a mountain fire warning device, which is applicable to a power transmission line, comprising:

[0021] A first conductor temperature collection module is used to collect a plurality of first conductor temperatures on the transmission line at a first preset collection interval;

[0022] A second conductor temperature collection module, configured to collect a plurality of second conductor temperatures on the transmission line at a second preset collection interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value, wherein the second preset collection interval is smaller than the first preset collection interval;

[0023] A conductor temperature anomaly determination module, configured to determine that the conductor temperature of the transmission line is abnormal when the temperature difference between the second conductor collected temperature and the pre-stored historical conductor temperature is greater than a second preset value;

[0024] A mountain fire warning information generation module is used to calculate the calculated temperature of the conductor of the transmission line, and generate a mountain fire warning information when the temperature difference between the second conductor collected temperature and the conductor calculated temperature is greater than a third preset value.

[0025] Furthermore, the mountain fire warning information generation module is also used to:

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

[0027] The present invention also provides a terminal device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the above-mentioned wildfire warning method when executing the computer program.

[0028] The present invention also provides a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned wildfire warning method.

[0029] The embodiment of the present invention collects multiple first conductor collection temperatures on the transmission line through a first preset collection interval, and when the temperature difference between two adjacent first conductor collection temperatures is greater than a first preset value, shortens the collection interval, and collects the second conductor collection temperature at a second preset collection interval, so that the conductor temperature abnormality of the transmission line can be accurately determined according to the temperature difference between the second conductor collection temperature and the historical conductor temperature, and by calculating the conductor calculated temperature of the transmission line, wildfire warning information is generated according to the temperature difference between the second conductor collection temperature and the conductor calculated temperature, so that wildfires can be accurately warned, thereby effectively improving the accuracy of wildfire warnings.

[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 radiant heat dissipation power of the conductor, the allowable current carrying capacity of the conductor and the solar heating power of the conductor per unit length, and can accurately calculate the conductor temperature, thereby providing accurate and reliable data support for forest fire warning of the transmission network. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 It is a structural schematic diagram of a forest fire warning device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work 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 understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] See also Figure 1 The present invention provides a forest fire early warning method applicable to power transmission lines, comprising:

[0037] S1. Collecting temperatures of a plurality of first conductors on a transmission line at a first preset collection interval;

[0038] The forest fire warning method of the embodiment of the present invention is applicable to power transmission lines, including ultra-high voltage transmission lines. In the embodiment of the present invention, the first preset collection interval can be set according to actual needs, for example, the first preset collection interval is 1s, that is, the temperature is collected every 1s to obtain multiple first conductor collection temperatures.

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

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

[0041] In the embodiment of the present invention, when the temperature difference between two adjacent first conductor temperatures is greater than 1°C, it can be determined that the suspected conductor temperature is abnormal. To further determine whether there is a conductor temperature abnormality, the collection interval is shortened to 0.2s, that is, the second preset collection interval is used to collect the temperatures of multiple second conductors on the transmission line.

[0042] S3, when the temperature difference between the second conductor collected temperature and the pre-stored historical conductor temperature is greater than a second preset value, determining that the conductor temperature of the transmission line is abnormal;

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

[0044] S4. Calculate the calculated temperature of the conductor of the transmission line, and generate forest fire warning information when the temperature difference between the second conductor collected temperature and the conductor calculated temperature is greater than a third preset value.

[0045] In an embodiment of the present invention, when the temperature difference between the second conductor collected temperature and the conductor calculated temperature is greater than a third preset value, that is, the temperature difference is greater than 2° C., a conclusion is drawn that a wildfire may occur near the transmission line, and wildfire warning information is generated.

[0046] The embodiment of the present invention collects multiple first conductor collection temperatures on the transmission line through a first preset collection interval, and when the temperature difference between two adjacent first conductor collection temperatures is greater than a first preset value, shortens the collection interval, and collects the second conductor collection temperature at a second preset collection interval, so that the conductor temperature abnormality of the transmission line can be accurately determined according to the temperature difference between the second conductor collection temperature and the historical conductor temperature, and by calculating the conductor calculated temperature of the transmission line, wildfire warning information is generated according to the temperature difference between the second conductor collection temperature and the conductor calculated temperature, so that wildfires can be accurately warned, thereby effectively improving the accuracy of wildfire warnings.

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

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

[0049] In the embodiment of the present invention, the calculation formula for the calculated temperature of the conductor may 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 is the convection heat dissipation power of the conductor, in W / m; q r is the radiation heat dissipation power of the conductor, in W / m; q s is the solar heating power per unit length of conductor, in W / m; R(T C ) indicates the conductor temperature is T C The resistivity of the conductor per unit length at that time, the unit is Ω / m; the radiation heat dissipation power and solar heating power of the conductor are determined by the age of the conductor.

[0052] The embodiment of the present invention comprehensively considers factors such as the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convection heat dissipation power of the conductor, the radiation heat dissipation power of the conductor, the allowable current carrying capacity of the conductor and the solar heating power of the conductor per unit length, and can accurately calculate the conductor temperature, thereby providing accurate and reliable data support for the forest fire warning of the transmission network.

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

[0054] The allowable current carrying capacity of the conductor is calculated based on the radiation heat dissipation power of the conductor per unit length, the convection heat dissipation power of the conductor per unit length, the sunlight heat absorption power of the conductor per unit length and the resistivity of the conductor per unit length at the allowable temperature of the conductor.

[0055] In the embodiment of the present invention, the allowable current carrying capacity of the wire can be calculated by the following calculation formula:

[0056]

[0057] Where I is the allowable current carrying capacity, unit A; W R is the radiation heat dissipation power per unit length of wire, unit W / m; W F is the convection heat dissipation power per unit length of wire, in W / m; W s is the solar heat absorption power per unit length of conductor, in W / m; R t ' is the resistivity of the conductor per unit length at the allowable temperature, in Ω / m.

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

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

[0060] In the embodiment of the present invention, the radiation heat dissipation power per unit length of the wire can be calculated using the following formula:

[0061] W R =πDE 1 S 1 ×[(t+273) 4 -(t a +273) 4 ]

[0062] Where D is the outer diameter of the wire, in meters; E 1 S is the radiation heat dissipation coefficient of the conductor surface. The value for a bright new wire is 0.23-0.43; the value for an old wire or a wire coated with a black preservative is 0.90-0.95. 1 is the Stefan Boltzmann constant, which is 5.67×10 - 8 W / m 2 ; t is the allowable temperature of the conductor, in °C; t a is the ambient temperature in °C, which can be the highest temperature of the month.

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

[0064] The convective heat dissipation power per unit length of the 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 the embodiment of the present invention, the convection heat dissipation power per unit length of the wire is W F The calculation formula is as follows:

[0066]

[0067] Among them, λ f is the heat transfer coefficient of the air layer on the conductor surface, W / (m·℃); R e 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, m / s; μf is the kinematic viscosity of the air layer on the conductor surface, m 2 / s;

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

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

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

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

[0075] W s =α s J s D

[0076] Among them, α s J is the heat absorption coefficient of the conductor surface. The value for a bright new wire is 0.35 to 0.46; the value for an old wire or a wire coated with a black preservative is 0.9 to 0.95. s is the sunlight intensity on the conductor, W / m 2 When it is sunny and the sunlight shines directly on the conductor, the sunlight intensity on the conductor can be 1000W / m 2 .

[0077] The embodiment of the present invention can more accurately predict the temperature of the conductor under sunshine conditions by calculating the sunshine heat absorption power; the sunshine heat absorption power is an important component of the heat balance equation of the conductor. The embodiment of the present invention can evaluate the heat balance state of the conductor under different meteorological conditions by calculating the sunshine heat absorption power, thereby ensuring that the conductor operates within a safe temperature range.

[0078] In one embodiment, a data acquisition device may be installed on the transmission line to collect data such as ambient temperature, wind speed, current carrying capacity, solar radiation, etc., so as to calculate the data related to the conductor temperature.

[0079] In one embodiment, the LSTM model can be used to achieve ultra-short-term prediction of wildfires and wildfire alarms. Based on the experimental data of wildfire simulation experiments with vegetation fires and crown fires as the research objects, the wire temperature, simulated wildfire trip voltage and wildfire trip time obtained in the simulation experiment are standardized, and the key features of each parameter are extracted. The features are normalized and preprocessed, and 80% of the data are selected for training the LSTM model, and 20% of the data are used for verification. The model implements functions through multiple gates, and can selectively retain the simulated wildfire test temperature data, thereby constructing an ultra-short-term prediction model based on wire temperature data, trip voltage and trip time.

[0080] After generating wildfire warning information, the embodiment of the present invention uses the real-time conductor temperature as an input parameter and inputs it into the wildfire warning edge computing intelligent processing module, and applies the trained LSTM wildfire ultra-short-term warning model to predict the wildfire burning rising period, the wildfire-induced conductor short-circuit breakdown to the ground, and the conductor temperature change, so as to achieve ultra-short-term warning and fine data processing for wildfires, help patrol personnel to check fire points, carry out emergency disposal work, and realize active voltage reduction and shutdown of transmission lines, thereby effectively improving the safety of transmission lines.

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

[0082] The embodiment of the present invention collects multiple first conductor collection temperatures on the transmission line through a first preset collection interval, and when the temperature difference between two adjacent first conductor collection temperatures is greater than a first preset value, shortens the collection interval, and collects the second conductor collection temperature at a second preset collection interval, so that the conductor temperature abnormality of the transmission line can be accurately determined according to the temperature difference between the second conductor collection temperature and the historical conductor temperature, and by calculating the conductor calculated temperature of the transmission line, wildfire warning information is generated according to the temperature difference between the second conductor collection temperature and the conductor calculated temperature, so that wildfires can be accurately warned, thereby effectively improving the accuracy of wildfire warnings.

[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 radiant heat dissipation power of the conductor, the allowable current carrying capacity of the conductor and the solar heating power of the conductor per unit length, and can accurately calculate the conductor temperature, thereby providing accurate and reliable data support for forest fire warning of the transmission network.

[0084] See also Figure 2 Based on the same inventive concept as the above embodiment, the embodiment of the present invention further provides a mountain fire warning device, which is applicable to a power transmission line, comprising:

[0085] A first conductor temperature collection module 10 is used to collect a plurality of first conductor temperatures on the transmission line at a first preset collection interval;

[0086] The second conductor temperature collection module 20 is used to collect the temperatures of multiple second conductors on the transmission line at a second preset collection interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value, and the second preset collection interval is smaller than the first preset collection interval;

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

[0088] The wildfire warning information generating module 40 is used to calculate the calculated temperature of the conductor of the transmission line, and to generate wildfire warning information when the temperature difference between the second conductor collected temperature and the calculated conductor temperature is greater than a third preset value.

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

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

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

[0092] The allowable current carrying capacity of the conductor is calculated based on the radiation heat dissipation power of the conductor per unit length, the convection heat dissipation power of the conductor per unit length, the sunlight heat absorption power of the conductor per unit length and the resistivity of the conductor per unit length at the allowable temperature of the conductor.

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

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

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

[0096] The convective heat dissipation power per unit length of the 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 warning information generation module 40 is further used to:

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

[0099] Correspondingly, an 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, and when the processor executes the computer program, the wildfire warning method of any one of the above embodiments is implemented.

[0100] The terminal device of 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, each step in the above embodiment 1 is implemented, for example Figure 1 Alternatively, when the processor executes the computer program, the functions of each module / unit in the above device embodiment are realized, such as the wildfire warning information generation module 40 .

[0101] Exemplarily, the computer program can be divided into one or more modules / units, one or more modules / units are stored in a 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 that can perform specific functions, and the instruction segments are used to 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 conductor of the transmission line, 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] The terminal device may be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that the schematic diagram is merely an example of a terminal device and does not constitute a limitation on the terminal device. The terminal device may include more or fewer components than shown in the diagram, or may combine certain components, or different components. For example, the terminal device may also include an input / output device, a network access device, a bus, etc.

[0103] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire terminal device.

[0104] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required for a function, etc.; the data storage area can store data created according to the use of the mobile terminal, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0105] Among them, if the module / unit integrated in the terminal device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased 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 electric carrier signals and telecommunication signals.

[0106] Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the wildfire warning method of any one of the above embodiments.

[0107] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A forest fire early warning method, characterized in that: Applicable to transmission lines, including: Collecting temperatures of a plurality of first conductors on the transmission line at a first preset collection interval; When the temperature difference between the collected temperatures of two adjacent first conductors is greater than a first preset value, collecting the collected temperatures of multiple second conductors on the transmission line at a second preset collection interval, wherein the second preset collection interval is smaller than the first preset collection interval; When the temperature difference between the second conductor collected temperature and the pre-stored historical conductor temperature is greater than a second preset value, determining that the conductor temperature of the transmission line is abnormal; The calculated temperature of the conductor of the transmission line is calculated, and when the temperature difference between the second conductor collected temperature and the calculated temperature of the conductor is greater than a third preset value, a forest fire warning information is generated.

2. The forest fire early warning method according to claim 1, characterized in that: The step of calculating the conductor temperature of the transmission line comprises: The calculated temperature of the conductor is obtained based on the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convection heat dissipation power of the conductor, the radiation heat dissipation power of the conductor, the allowable current carrying capacity of the conductor and the solar heating power of the conductor per unit length.

3. The forest fire early warning method according to claim 2, characterized in that: Also includes: The allowable current carrying capacity of the conductor is calculated based on the radiation heat dissipation power of the conductor per unit length, the convection heat dissipation power of the conductor per unit length, the sunlight heat absorption power of the conductor per unit length and the resistivity of the conductor per unit length at the allowable temperature of the conductor.

4. The forest fire early warning method according to claim 3, characterized in that: Also includes: The radiation heat dissipation power per unit length of the conductor is calculated based on the outer diameter of the conductor, the radiation heat dissipation coefficient of the conductor surface, the allowable temperature of the conductor and the ambient temperature.

5. The forest fire early warning method according to claim 3, characterized in that: Also includes: The convective heat dissipation power per unit length of the 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 forest fire early warning method according to claim 3, characterized in that: Also includes: The solar heat absorption power per unit length of the conductor is calculated based on the heat absorption coefficient of the conductor surface, the sunlight intensity on the conductor and the outer diameter of the conductor.

7. A mountain fire early warning device, characterized in that: Applicable to transmission lines, including: A first conductor temperature collection module is used to collect a plurality of first conductor temperatures on the transmission line at a first preset collection interval; A second conductor temperature collection module, configured to collect a plurality of second conductor temperatures on the transmission line at a second preset collection interval when the temperature difference between two adjacent first conductor temperatures is greater than a first preset value, wherein the second preset collection interval is smaller than the first preset collection interval; A conductor temperature anomaly determination module, configured to determine that the conductor temperature of the transmission line is abnormal when the temperature difference between the second conductor collected temperature and the pre-stored historical conductor temperature is greater than a second preset value; The wildfire warning information generating module is used to calculate the calculated temperature of the conductor of the transmission line, and generate wildfire warning information when the temperature difference between the second conductor collected temperature and the calculated temperature of the conductor is greater than a third preset value.

8. The mountain fire warning device according to claim 7, characterized in that: The mountain fire warning information generation module is also used for: The calculated temperature of the conductor is obtained based on the mass of the conductor per unit length, the equivalent specific heat capacity of the conductor, the convection heat dissipation power of the conductor, the radiation heat dissipation power of the conductor, the allowable current carrying capacity of the conductor and the solar heating power of the conductor 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 when the processor executes the computer program, the wildfire warning method as described in any one of claims 1 to 6 is implemented.

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 running, the device where the computer-readable storage medium is located is controlled to execute the wildfire warning method according to any one of claims 1 to 6.

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