Early warning method and device for high-voltage transmission line, medium and equipment

Abstract

The invention provides an early warning method and device for a high-voltage power transmission line, a medium and equipment, and relates to the technical field of safety monitoring of the high-voltage power transmission line, and the early warning method for the high-voltage power transmission line comprises the steps: obtaining the distance between the high-voltage power transmission line and a surrounding obstacle and the ecological parameters of the obstacle according to a preset frequency, the distance comprises a horizontal distance and a sag distance, and the ecological parameters comprise near-infrared wave band reflectivity, red light wave band reflectivity and green light wave band reflectivity; according to the distance, whether obstacle early warning information is sent out or not is judged; and according to the ecological parameters, whether the fire early warning information is sent is judged, the distance between the high-voltage transmission line and the obstacle and the ecological parameters of the obstacle can be accurately determined, whether the fire early warning information and / or the fire early warning information is sent is judged in combination with the distance and the ecological parameters, an early warning signal can be timely and accurately sent, and the accuracy is high.

Description

TECHNICAL FIELD

[0001] The present application generally relates to the technical field of high-voltage transmission line safety monitoring. More particularly, the present application relates to a pre-warning method, device, system, medium and equipment for a high-voltage transmission line. BACKGROUND

[0002] In the power system, the high-voltage transmission line is used to transmit the electric energy generated by the power plant to the substation at high voltage, and then the substation is used to step down the voltage, and finally the electric energy is transmitted to the user or other load end equipment. The safety and stability of the high-voltage transmission line are crucial to the operation of the entire power system. In order to ensure the safe operation of the high-voltage transmission line, it needs to be monitored.

[0003] The current monitoring scheme mainly includes: measuring the height of the surrounding obstacles (trees, etc.) by artificial unmanned aerial vehicle or range finder, etc.; monitoring the channel where the high-voltage transmission line is located by online monitoring equipment (camera), taking a photo every half hour, and issuing a pre-warning signal if a crane or large construction vehicle is found; monitoring smoke and fire by online monitoring equipment (camera). The existing monitoring system has single function, is easy to produce false alarm, has low accuracy, and has great safety hazard. SUMMARY

[0004] In order to solve at least one or more of the above-mentioned technical problems, the present application provides a pre-warning method, device, system, medium and equipment for a high-voltage transmission line in multiple aspects.

[0005] In a first aspect, the pre-warning method for a high-voltage transmission line provided by the present application comprises the following steps: According to a preset frequency, the distance between the high-voltage transmission line and the surrounding obstacles and the ecological parameters of the obstacles are obtained, wherein the distance includes horizontal distance and sag distance, and the ecological parameters include near-infrared band reflectivity, red light band reflectivity and green light band reflectivity; According to the distance, it is judged whether to issue an obstacle pre-warning information; According to the ecological parameters, it is judged whether to issue a fire pre-warning information.

[0006] In some examples, the pre-warning method further comprises: judging whether the distance is less than a preset first threshold value; If the distance is less than the preset first threshold value, the obstacle pre-warning information is generated and issued.

[0007] In some examples, the pre-warning method further comprises: determine an ecological index of the obstacle according to the ecological parameters of the obstacle, wherein the ecological index comprises a vegetation index and a moisture index; determine whether to send a fire warning information according to the ecological index of the obstacle.

[0008] In some examples, the warning method further comprises: determine whether the ecological index of the obstacle satisfies a condition that the vegetation index is greater than a preset second threshold and the moisture index is less than a preset third threshold; if it is determined that the ecological index of the obstacle satisfies the condition that the vegetation index is greater than the preset second threshold and the moisture index is less than the preset third threshold, generate and send a fire warning information.

[0009] In some examples, the distance is an actual distance obtained after calibration of a measured distance, wherein the calibration process of the measured distance comprises: obtain a galloping parameter of the high-voltage transmission line when the measured distance is collected, wherein the galloping parameter comprises a maximum amplitude, a frequency and a phase of the swing of the high-voltage transmission line; calibrate the measured distance in real time according to the galloping parameter to obtain the actual distance.

[0010] In a second aspect, the application provides a warning device for a high-voltage transmission line, characterized in that it comprises: a distance measuring module for collecting the distance between the high-voltage transmission line and the surrounding obstacles in real time, wherein the distance comprises a horizontal distance and a sag distance; a spectral module for collecting ecological parameters of the obstacles in real time, wherein the ecological parameters comprise near-infrared reflectivity, red light reflectivity and green light reflectivity; a control module for executing the warning method of any one of claims 1-5 according to the distance between the high-voltage transmission line and the surrounding obstacles and the ecological parameters of the obstacles.

[0011] In some examples, the distance measuring module is a laser radar or a laser displacement sensor.

[0012] In some examples, the spectral module is a multi-spectral camera.

[0013] In a third aspect, the application provides a warning system for a high-voltage transmission line, comprising: an acquisition module configured to acquire the distance between the high-voltage transmission line and the surrounding obstacles and the ecological parameters of the obstacles according to a preset frequency, wherein the distance comprises a horizontal distance and a sag distance, and the ecological parameters comprise near-infrared reflectivity, red light reflectivity and green light reflectivity; a judging module configured to judge whether to send an obstacle warning information according to the distance; The judging module is further configured to judge whether to send a fire warning information according to the ecological parameter.

[0014] In a fourth aspect, the present application provides a computer readable storage medium containing program instructions, when the program instructions are executed by a processor, the method described in the first aspect is realized.

[0015] In a fifth aspect, the present application provides an electronic device, comprising: a processor; and a memory storing computer instructions, when the computer instructions are run by the processor, the electronic device executes the method described in the first aspect.

[0016] Through the early warning method, device, medium and equipment for high-voltage transmission line provided by the above, the distance between the high-voltage transmission line and the obstacle and the ecological parameter of the obstacle can be accurately determined, and the fire warning information and / or the fire warning information are judged in combination with the distance and the ecological parameter, the early warning signal can be sent in time and accurately, the accuracy is high, and the false positive rate is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application exemplary embodiments will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are illustrated by way of example and not limitation, in which the same or corresponding elements are referred to with the same or corresponding reference numerals, and in which: Figure 1 An exemplary flowchart of an early warning method for high-voltage transmission line provided by an embodiment of the present application is shown; Figure 2 Another exemplary flowchart of an early warning method for high-voltage transmission line provided by an embodiment of the present application is shown; Figure 3 An exemplary structural diagram of an early warning device for high-voltage transmission line provided by an embodiment of the present application is shown; Figure 4 An exemplary structural block diagram of an electronic device of some embodiments of the present application is shown. DETAILED DESCRIPTION

[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0019] It should be understood that the terms “comprising” and “including” used in the specification and claims of the present application indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0020] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and claims of the present application, the singular forms “a”, “an” and “the” are intended to include the plural forms, unless the context clearly indicates otherwise. It should be further understood that the term “and / or” used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations thereof, and includes these combinations.

[0021] As used in the specification and claims of the present application, the term “if” can be interpreted as “when” or “upon” or “in response to a determination” or “in response to detecting” depending on the context. Similarly, the phrases “if it is determined” or “if [a described condition or event] is detected” can be interpreted to mean “upon determining” or “in response to determining” or “upon detecting [a described condition or event]” or “in response to detecting [a described condition or event]” depending on the context.

[0022] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] Embodiment 1 As Figure 1 shown, the early warning method for high-voltage transmission lines provided by the embodiments of the present application includes the following steps: In step S101, according to a preset frequency, the distance between the high-voltage transmission line and the surrounding obstacles and the ecological parameters of the obstacles are obtained, wherein the distance includes horizontal distance and sag distance, and the ecological parameters include near-infrared band reflectivity, red light band reflectivity and green light band reflectivity.

[0024] Specifically, the horizontal distance is the horizontal distance between the high-voltage transmission line and the left or right obstacle (tree, building, etc.), and the sag distance is the vertical distance between the top of the arc of the high-voltage transmission line and the upper or lower obstacle (tree, etc.).

[0025] In some examples, the distance is an actual distance obtained after calibration of the measured distance, wherein the calibration of the measured distance comprises: obtaining a galloping parameter of the high-voltage transmission line when the measured distance is collected, wherein the galloping parameter comprises a maximum amplitude, a frequency, and an azimuth of the swing of the high-voltage transmission line; According to the galloping parameter, the measured distance is calibrated in real time to obtain the actual distance.

[0026] Specifically, the environmental parameters will cause the measured distance to deviate, for example, in windy weather, the horizontal distance between the high-voltage transmission line and the obstacle (tree, building, etc.) will deviate, and in rainy or snowy weather, the sag distance between the high-voltage transmission line and the obstacle (tree, building, etc.) will deviate. In addition, the temperature will also cause the sag distance to deviate due to the effect of thermal expansion and cold contraction.

[0027] Specifically, in windy weather, the high-voltage transmission line will swing left and right, and the actual horizontal distance D2 between the high-voltage transmission line and the obstacle (tree, building, etc.) is calculated using the formula D2=D1-Asin(2πf(t)t+φ), wherein A is the maximum amplitude of the swing of the high-voltage transmission line (such as 1 meter left and right swing), f(t) is the frequency of the swing of the high-voltage transmission line at time t (such as 2 swings per second), and φ is the initial phase of the sine function corresponding to the back-and-forth swing of the high-voltage transmission line. Wherein f(t) is the frequency of the swing of the high-voltage transmission line at time t after calibration by the formula Δf = (2v(t)) / λ, Δf is the change in laser frequency, v(t) is the speed of the swing of the high-voltage transmission line at time t (such as 0.5 meters per second), and λ is the wavelength of the laser.

[0028] Specifically, the measured distance can also be calibrated in an adaptive manner. Specifically, the corresponding environmental parameters, the galloping parameters of the high-voltage transmission line, and the measured distance are input into the trained neural network model, and the trained neural network model calibrates the current measured distance x(t) according to the formula a(t) = a(t-1) + K(t)(x(t) - H a(t-1)), to obtain the actual distance a(t). Wherein a(t-1) is the distance value output by the neural network model at the last moment, and K(t) is the trust degree at t moment. H is the correction coefficient at t moment, which is dynamically changed according to different environmental parameters (high temperature, severe cold, heavy rain, blizzard), and its value can be dynamically corrected by Kalman filtering. For each acquired measured distance, the correction coefficient is fine-tuned according to the error size. For example, if the wind suddenly increases, it will automatically find that the previous correction is not enough, and immediately adjust the coefficient to make the calibrated distance more accurate. The neural network model is an LSTM network model.

[0029] In step S102, whether to issue an obstacle warning information is determined according to the distance.

[0030] In step S103, whether to issue a fire warning information is determined according to the ecological parameter.

[0031] In some examples, as shown in the first aspect, Figure 2 The warning method further includes: determining whether the distance is less than a preset first threshold.

[0032] Specifically, the first threshold is 3 meters. That is, when the horizontal distance and / or sag distance between the high-voltage transmission line and the obstacle is less than 3 meters, it means that there is a risk of touching and wind deviation discharge.

[0033] In some examples, as shown in the first aspect, Figure 2 The warning method further includes: If the distance is less than the preset first threshold, the obstacle warning information is generated and issued.

[0034] Specifically, when any one of the horizontal distance and the sag distance corresponding to the distance is greater than or equal to 3 meters, it means that there is a risk of touching between the high-voltage transmission line and the obstacle, and the obstacle warning information is issued, which is suitable for urban power supply scenarios.

[0035] In some examples, as shown in the first aspect, Figure 2 The warning method further includes: According to the ecological parameter of the obstacle, an ecological index of the obstacle is determined, wherein the ecological index includes a vegetation index and a moisture index; According to the ecological index of the obstacle, whether to issue a fire warning information is determined.

[0036] Specifically, the vegetation index NDVI=(NIR-Red) / (NIR+Red), and the moisture index NDWI=(G-NIR) / (G+NIR), wherein NIR is the near-infrared band reflectivity, Red is the red light band reflectivity, and G is the green light band reflectivity. In particular, the vegetation index and the moisture index can also be obtained according to the formula (1) to obtain the enhanced vegetation index EVI of the obstacle. In formula (1), Blue is the blue light band reflectivity, and C1, C2 and L are all preset constants. The formula introduces the blue light band to correct the atmospheric interference and is suitable for high biomass areas.

[0037] In some examples, as shown in Figure 2 The early warning method further includes: determining whether the ecological index of the obstacle satisfies the condition that the vegetation index is greater than a preset second threshold value and the moisture index is less than a preset third threshold value; If it is determined that the ecological index of the obstacle satisfies the condition that the vegetation index is greater than a preset second threshold value and the moisture index is less than a preset third threshold value, a fire warning information is generated and sent out.

[0038] Specifically, the second threshold value is 0.6, and the third threshold value is 0.2. That is, when the vegetation index is greater than 0.6 and the moisture index is less than 0.2, it indicates that there is a risk of forest fire, and it is suitable for scenes with dense vegetation such as forests.

[0039] In particular, when the horizontal distance and / or sag distance between the high-voltage transmission line and the obstacle is less than 3 meters and the ecological index of the obstacle satisfies the condition that the vegetation index is greater than 0.6 and the moisture index is less than 0.2, a composite warning signal including the obstacle warning information and the fire warning information is sent out.

[0040] The early warning method for the high-voltage transmission line provided by the present application can accurately determine the distance between the high-voltage transmission line and the obstacle and the ecological parameters of the obstacle, and determine whether to send out the fire warning information and / or the fire warning information in combination with the distance and the ecological parameters, so that the early warning signal can be sent out in time and accurately, and the accuracy is high.

[0041] Embodiment 2 As shown in Figure 3 The early warning device for the high-voltage transmission line provided by the present application includes: A distance measuring module is configured to collect the distance between the high-voltage transmission line and the surrounding obstacle in real time, wherein the distance includes a horizontal distance and a sag distance. A spectrum module is configured to collect ecological parameters of the obstacle in real time, wherein the ecological parameters include near-infrared band reflectivity, red light band reflectivity, and green light band reflectivity. A control module is configured to execute the early warning method described in Embodiment 1 according to the distance between the high-voltage transmission line and the surrounding obstacles and the ecological parameters of the obstacles.

[0042] In some examples, the distance measuring module is a laser radar or a laser displacement sensor.

[0043] In some examples, the spectrum module is a multi-spectrum camera.

[0044] Specifically, the distance measuring module and the spectrum module are fixedly installed on the transmission corridor tower to scan the high-voltage transmission line and the surrounding obstacles thereof at a frequency of 10 Hz.

[0045] The early warning device further comprises a galloping sensor, wherein the galloping sensor comprises an inertial sensor or an optical fiber vibration sensor.

[0046] Specifically, by installing the inertial sensor or the optical fiber vibration sensor on the conductor, the amplitude, frequency, phase and mode (e.g., horizontal / vertical vibration ratio) of the swing of the high-voltage transmission line are synchronously collected. The timestamps of the laser measurement and the galloping sensor are aligned through GPS or PTP protocol (error < 1 ms). The measurement values (Cartesian coordinate system) and the conductor galloping direction (conductor local coordinate system) are unified into the same coordinate system.

[0047] In some examples, the early warning device further comprises: A band-stop filter is configured to filter out the galloping main frequency component in the frequency data (to avoid damaging the real signal). If there is a phase delay, a all-pass filter is designed to adjust the phase response.

[0048] Specifically, the control module is a host computer or an FPGA, etc.

[0049] In another aspect, the present application also provides an electronic device, referring to Figure 4 , Figure 4 is an exemplary structural block diagram of an electronic device according to an embodiment of the present application, as shown in Figure 4 The electronic device comprises a processor and a memory, the memory stores computer instructions, and the processor executes the computer instructions to perform the method provided by the present application.

[0050] In particular, the processor 601 can include a central processing unit (CPU) or a graphics processing unit (GPU), or an application specific integrated circuit (ASIC), or can be configured to implement one or more integrated circuits to implement embodiments of the present application. The memory 602 can include a memory for storing data or instructions. For example, the memory 602 can be at least one of a hard disk drive (HDD), a read-only memory (ROM), a random access memory (RAM), a floppy disk drive, a flash drive, an optical disk, a magneto-optical disk, a magnetic tape, a universal serial bus (USB) drive, or other physical / tangible memory storage device. Also, for example, the memory 602 includes a removable or non-removable (or fixed) medium. Further, for example, the memory 602 can be internal or external to the integrated gateway disaster recovery device. The memory 602 can be a non-volatile solid-state memory. In other words, generally, the memory 602 includes a tangible (non-transitory) computer-readable storage medium (such as a memory device) encoded with executable instructions, where the stored executable instructions, when executed by the processor 601 (such as by one or more processors), implement the methods in embodiments of the present application.

[0051] In one example, Figure 4 The electronic device shown can also include a communication interface 603 and a bus 610. The processor 601, the memory 602, the communication interface 603 are connected through the bus 610 and complete communication with each other. The communication interface 603 is mainly used to realize the communication between the modules, devices, units and / or devices in the electronic device. The bus 610 includes hardware, software or both, which can couple the components of the online data traffic billing device to each other. For example, the bus can include at least one of an accelerated graphics port (AGP) or other graphics bus, an enhanced industry standard architecture (EISA) bus, a front side bus (FSB), a hyper transport (HT) interconnect, an industry standard architecture (ISA) bus, an infiniband interconnect, a low pin count (LPC) bus, a memory bus, a microchannel architecture (MCA) bus, a peripheral component interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a serial advanced technology attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus. The bus 610 can include one or more buses. Although specific buses are described or shown in embodiments of the present application, any suitable bus or interconnect can be considered in embodiments of the present application.

[0052] In another aspect, the embodiments of the present application further provide a computer readable storage medium, having stored thereon computer program instructions, which, when executed by a processor, implement the method described above. The computer readable storage medium is, for example, a classical computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage medium, an optical storage medium, a flash memory device, an electrical, optical, or other physical / tangible storage device.

[0053] In another aspect, the embodiments of the present application further provide a computer program product, comprising computer program instructions, which, when executed by a processor, implement the method provided by the embodiments of the present application. The computer program product is, for example, a software installation package, a plug-in compatible with a related software system, etc.

[0054] The flowcharts and / or block diagrams described above exemplarily describe the flowcharts and / or block diagrams of the method and system of the embodiments of the present application, and describe the related aspects. It should be understood that each block in the flowcharts and / or block diagrams, or a combination thereof, can be implemented by computer program instructions, or by special hardware performing specified functions or actions, or by a combination of special hardware and computer instructions. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, etc.; when implemented in software, it is a program or a code segment used to perform the required tasks. The program or code segment can be stored in a memory, or transmitted in a data signal carried in a carrier wave over a transmission medium or a communication link. The code segment can be downloaded via a computer network, such as the Internet, an intranet, etc.

[0055] It should be noted that, in the present application, the relationship terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0056] While the present application has been shown and described with reference to numerous embodiments thereof, it will be apparent to one of ordinary skill in the art that many changes, modifications, and alternatives can be made to the embodiments described without departing from the spirit and scope of the present application. It should be understood that in the process of practicing the present application, various alternatives, modifications, and equivalents can be employed. It is intended that the following claims define the scope of the present application and that methods equivalent to those claims recited herein are within the scope of the present application. Therefore, it is contemplated to cover the same within the spirit and the scope of the present application.

Claims

1. A method for early warning of high-voltage transmission lines, characterized in that, include: According to a preset frequency, the distance between the high-voltage transmission line and surrounding obstacles and the ecological parameters of the obstacles are obtained. The distance includes horizontal distance and sag distance, and the ecological parameters include near-infrared band reflectivity, red band reflectivity and green band reflectivity. Based on the distance, determine whether to issue an obstacle warning message; Based on the aforementioned ecological parameters, a fire warning message is issued.

2. The early warning method according to claim 1, characterized in that, The early warning method also includes: Determine whether the distance is less than a preset first threshold; If the distance is less than a preset first threshold, then the obstacle warning information is generated and issued.

3. The early warning method according to claim 1, characterized in that, The early warning method also includes: Based on the ecological parameters of the obstacle, an ecological index of the obstacle is determined, wherein the ecological index includes a vegetation index and a moisture index; Based on the ecological index of the obstacle, determine whether to issue a fire warning.

4. The early warning method according to claim 3, characterized in that, The early warning method also includes: Determine whether the ecological index of the obstacle meets the conditions that the vegetation index is greater than a preset second threshold and the moisture index is less than a preset third threshold; If it is determined whether the ecological index of the obstacle meets the conditions that the vegetation index is greater than a preset second threshold and the moisture index is less than a preset third threshold, then a fire warning message is generated and issued.

5. The early warning method according to claim 1 or 2, characterized in that, The distance is the actual distance obtained after calibrating the measured distance, wherein the calibration process of the measured distance includes: The galloping parameters of the high-voltage transmission line are acquired when the measurement distance is collected, wherein the galloping parameters include the maximum amplitude, frequency and phase of the high-voltage transmission line swing; The measured distance is calibrated in real time based on the dancing parameters to obtain the actual distance.

6. A warning device for high-voltage transmission lines, characterized in that, include: The ranging module is used to collect the distance between the high-voltage transmission line and surrounding obstacles in real time, wherein the distance includes horizontal distance and sag distance; The spectral module is used to collect the ecological parameters of the obstacle in real time, wherein the ecological parameters include near-infrared reflectance, red reflectance and green reflectance; The control module is used to execute the early warning method according to any one of claims 1-5 based on the distance between the high-voltage transmission line and surrounding obstacles and the ecological parameters of the obstacles.

7. The early warning device according to claim 6, characterized in that, The ranging module is a lidar or a laser displacement sensor.

8. The early warning device according to claim 6, characterized in that, The spectral module is a multispectral camera.

9. A computer-readable storage medium, characterized in that, It includes program instructions that, when executed by a processor, cause the method according to any one of claims 1-5 to be implemented.

10. An electronic device, characterized in that, include: processor; as well as A memory storing computer instructions that, when executed by the processor, cause the electronic device to perform the method according to any one of claims 1-5.

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