CN110907710B - Lightning early warning method and device, storage medium and computer equipment - Google Patents
Lightning early warning method and device, storage medium and computer equipment Download PDFInfo
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Abstract
The invention discloses a lightning early warning method, a lightning early warning device, a storage medium and computer equipment. The lightning early warning method comprises the steps of judging whether the local average electric field strength is larger than a preset threshold value or not, and judging whether the local average electric field strength meets the necessary condition of a thunderstorm or not; the lightning monitoring station judges the position of nearby thundercloud according to the magnetic field component in each orthogonal direction, and calculates the first distance between the thundercloud and the target lightning monitoring station according to the ratio of the electric field component to the magnetic field component; each lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as arrival time of the electromagnetic waves, and calculates the second distance between the target monitoring station and the thunderclouds and the location of the thunderclouds by using the time difference method according to data of the lightning monitoring stations distributed in different locations. And generating accurate thundercloud distance information according to the first distance and the second distance. Accurate thundercloud information is acquired, so that accuracy of lightning early warning is improved.
Description
Technical Field
The invention relates to the field of power systems, in particular to a lightning early warning method, a lightning early warning device, a storage medium and computer equipment.
Background
When lightning occurs, great security threats can be generated to workers working outdoors and some special places (such as oil depots and the like). Therefore, the lightning early warning is necessary for the personnel and the places, so that the personnel and the places carry out lightning protection operation, and the loss of lives and property is avoided or reduced. In the prior art, the lightning early warning device only monitors the atmospheric electric field value of the local area, and when the atmospheric electric field value is greater than a preset threshold value, the lightning early warning device can generate lightning early warning. The lightning early warning false alarm rate of the mode is particularly high. Because the atmospheric electric field value is larger than the preset threshold value only is a necessary condition for the lightning occurrence, not all conditions, the lightning occurrence also needs to consider factors such as wind speed, moving speed of the thundercloud, volume of the thundercloud, terrain, geology and the like. If outdoor workers or special places, lightning protection operation is carried out due to wrong lightning early warning alarm, and normal work of the outdoor workers is delayed. Therefore, how to improve the accuracy of the lightning early warning is very necessary.
Disclosure of Invention
The invention mainly aims to provide a lightning early warning method and aims to solve the technical problem of improving accuracy of lightning early warning.
The invention provides a lightning early warning method, which is applied to a lightning monitoring and early warning system, wherein the lightning monitoring and early warning system comprises at least one lightning monitoring station and comprises the following steps:
acquiring the average electric field intensity of an area predicted by a target lightning monitoring station, and judging whether the average electric field intensity value is greater than a preset threshold value or not;
if so, acquiring an electric field component of the lightning strike-back signal, which is vertical to the ground, and magnetic field components of the lightning strike-back signal in each orthogonal direction;
generating first thundercloud information according to the electric field component and the magnetic field component, wherein the first thundercloud information comprises a first distance between the thundercloud and a target thunder and lightning monitoring station;
carrying out GPS time service on the target lightning monitoring stations and the neighboring lightning monitoring stations with preset number;
respectively acquiring the time for the lightning strike-back signal to reach a target lightning monitoring station and the time for the lightning strike-back signal to reach a preset number of adjacent lightning monitoring stations;
generating second thundercloud information according to each time, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station;
generating a real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
and outputting corresponding lightning early warning information of a lightning prediction area corresponding to the target lightning monitoring station according to the real-time distance.
Preferably, the step of acquiring the electric field component perpendicular to the ground of the lightning strike-back signal and the magnetic field component in each orthogonal direction of the lightning strike-back signal comprises:
acquiring a back-striking electric field signal sensed by an antenna of a target lightning monitoring station;
preprocessing the electric field signal to generate a clean electric field waveform;
carrying out waveform analysis on a larger waveform component in the electric field variation component of a target area, extracting characteristics, and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to a target lightning monitoring station;
and if so, generating instruction information for acquiring the electric field component perpendicular to the ground of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal.
Preferably, the step of obtaining the average electric field strength of the area predicted by the target lightning monitoring station comprises the following steps:
acquiring an electromagnetic wave signal of a target area according to a preset time interval, and judging whether a lightning monitoring and early warning system can output an early warning result or not by combining the current environment of the target area;
if so, bringing preset measurement parameters into the lightning monitoring and early warning system, and further judging whether the lightning monitoring and early warning system works normally;
and if so, finishing the self-checking of the system.
Preferably, the step of generating the real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance includes:
generating a real-time distance range according to the first distance and a preset error range;
judging whether the numerical value of the second distance is within the numerical value of the real-time distance range;
if yes, the second distance is judged to be the real-time distance.
Preferably, the lightning monitoring station is provided with a lightning protection self-protection device, and before the step of obtaining the average electric field strength of the area predicted by the target lightning monitoring station, the method comprises the following steps:
judging whether a lightning protection self-protection device of a power line of a target lightning monitoring station works normally or not;
if yes, judging whether a lightning protection self-protection device of a specified part of the lightning monitoring station works normally;
and if so, judging that the lightning protection self-protection device of the target lightning monitoring station works normally.
The invention also provides a lightning early warning device, which comprises:
the first judgment module is used for acquiring the average electric field intensity of the area predicted by the target lightning monitoring station and judging whether the average electric field intensity value is greater than a preset threshold value or not;
the first acquisition module is used for acquiring an electric field component, perpendicular to the ground, of the lightning strike-back signal and a magnetic field component of each orthogonal direction of the lightning strike-back signal if the lightning strike-back signal is in the ground;
the first generation module is used for generating first thundercloud information according to the electric field component and the magnetic field component, wherein the first thundercloud information comprises a first distance between the thundercloud and a target thunder and lightning monitoring station;
the time service module is used for carrying out GPS time service on the target lightning monitoring stations and the adjacent lightning monitoring stations with the preset number;
the second acquisition module is used for respectively acquiring the time of the lightning strike-back signal reaching the target lightning monitoring stations and the time of the adjacent lightning monitoring stations with the preset number;
the second generation module is used for generating second thundercloud information according to each time, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station;
the third generation module is used for generating the real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
and the early warning module is used for outputting corresponding thunder early warning information of a thunder prediction area corresponding to the target thunder monitoring station according to the real-time distance.
Preferably, the lightning early warning device further comprises:
the third acquisition module is used for acquiring a back-striking electric field signal sensed by an antenna of the target lightning monitoring station;
the fourth generation module is used for preprocessing the electric field signal to generate a clean electric field waveform;
the second judgment module is used for carrying out waveform analysis on a larger waveform component in the electric field variation component of the target area, extracting characteristics and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to the target lightning monitoring station;
and the first execution module is used for generating instruction information for acquiring the electric field component, perpendicular to the ground, of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal if the lightning return stroke signal is in the normal direction.
Preferably, the lightning early warning device further comprises:
the third judgment module is used for collecting the electromagnetic wave signals of the target area according to a preset time interval and judging whether the electromagnetic wave signals are normal or not by combining the current environment of the target area;
the fourth judgment module is used for bringing the preset measurement parameters into the lightning monitoring and early warning system if the preset measurement parameters are positive, and judging whether the lightning monitoring and early warning system works normally or not;
and the second execution module is used for finishing the system self-checking if the system self-checking is finished.
The present invention also provides a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the method of lightning early warning as described above is implemented.
The invention also provides a computer device comprising a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the lightning early warning method.
The invention has the beneficial effects that: judging whether the local average electric field strength reaches the necessary condition of the thunderstorm or not by judging whether the local average electric field strength is larger than a preset threshold or not; the lightning monitoring station judges the position of nearby thundercloud according to the magnetic field component in each orthogonal direction, and calculates the first distance between the thundercloud and the target lightning monitoring station according to the ratio of the electric field component to the magnetic field component; each lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as arrival time of the electromagnetic waves, and calculates the second distance between the target monitoring station and the thunderclouds and the location of the thunderclouds by using the time difference method according to data of the lightning monitoring stations distributed in different locations. And generating accurate thundercloud distance information according to the first distance and the second distance. Accurate thundercloud information is acquired, so that accuracy of lightning early warning is improved.
Drawings
FIG. 1 is a flow chart of a first embodiment of a lightning early warning method of the present invention;
FIG. 2 is a schematic structural diagram of a first embodiment of a lightning early warning device according to the present invention;
FIG. 3 is a block diagram of an embodiment of a storage medium provided in the present application;
fig. 4 is a block diagram of an embodiment of a computer device provided in the present application.
Description of reference numerals:
1. a first judgment module; 2. a first acquisition module; 3. a first generation module; 4. a time service module; 5. a second acquisition module; 6. a second generation module; 7. a third generation module; 8. an early warning module;
100. a storage medium; 200. a computer program; 300. a computer device; 400. a processor.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a lightning early warning method, which is applied to a lightning monitoring and early warning system, wherein the lightning monitoring and early warning system comprises at least one lightning monitoring station, and the method comprises:
s1: acquiring the average electric field intensity of an area predicted by a target lightning monitoring station, and judging whether the average electric field intensity value is greater than a preset threshold value or not;
s2: if so, acquiring an electric field component of the lightning strike-back signal, which is vertical to the ground, and magnetic field components of the lightning strike-back signal in each orthogonal direction;
s3, generating first thundercloud information according to the electric field component and the magnetic field component, wherein the first thundercloud information comprises a first distance between the thundercloud and a target thunder and lightning monitoring station;
s4, carrying out GPS time service on the target thunder and lightning monitoring stations and the thunder and lightning monitoring stations adjacent to the target thunder and lightning monitoring stations in the preset number;
s5, respectively acquiring the time of the lightning strike-back signal reaching the target lightning monitoring stations and the time of the adjacent lightning monitoring stations with preset number;
s6: generating second thundercloud information according to each time, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station;
s7: generating a real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
s8: and outputting corresponding lightning early warning information of a lightning prediction area corresponding to the target lightning monitoring station according to the real-time distance.
In the embodiment of the invention, the lightning monitoring and early warning system comprises a lightning monitoring station, an industrial personal computer and a signal receiver, wherein the lightning monitoring station is used for acquiring electromagnetic signals of a local area, the signal receiver is used for processing the electromagnetic signals, and the industrial personal computer is used for sending control instruction information to the lightning monitoring station and storing and displaying data acquired by the lightning monitoring station. The industrial personal computer of the lightning monitoring and early warning system receives the average electric field strength of an area measured by a target lightning monitoring station and judges whether the local average electric field strength is greater than a preset threshold value or not, and the purpose is to judge whether the local average electric field strength meets the necessary condition of thunderstorm or not. And if so, acquiring an electric field component which is perpendicular to the ground of the lightning strike-back signal and a magnetic field component of each orthogonal direction of the lightning strike-back signal by the industrial personal computer, wherein the orthogonal directions comprise an east-west direction and a south-north direction. The lightning monitoring station judges the position of nearby thunderclouds according to the magnetic field components in the orthogonal directions, and calculates the distance between the thunderclouds and the target lightning monitoring station according to the ratio of the electric field components to the magnetic field components, namely first thundercloud information is generated, wherein the first thundercloud information comprises the first distance between the thunderclouds and the target lightning monitoring station and the position information of the thunderclouds. In the embodiment of the invention, the lightning monitoring and early warning system comprises a plurality of lightning monitoring stations, and the plurality of lightning monitoring stations form a lightning monitoring network. An industrial personal computer in the thunder early warning monitoring system sends control instruction information to each thunder monitoring station, so that GPS time service is carried out between a target thunder monitoring station and a preset number of thunder monitoring stations adjacent to the target thunder monitoring station, and the purpose of GPS time service is to achieve synchronization of system time and standard time. Each thunder and lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as the arrival time of the electromagnetic waves, calculates the thunderclouds in different places by using a time difference method according to data of a plurality of thunder and lightning monitoring stations distributed in different places, and the difference of any point causes that the calculated result and the actual result are greatly different due to the fact that the propagation speed of the electromagnetic waves reaches the light speed, so that the thunder and lightning monitoring stations are required to have high-precision synchronization time. And the lightning monitoring and early warning system generates second thundercloud information through a time difference method, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station. The lightning early warning monitoring system obtains the first distance and the second distance simultaneously. And judging whether the obtained numerical value is in a preset interval or not by mutually verifying the first distance and the second distance and dividing the first distance by the second distance. For example, if the first distance is 50KM, the second distance is 55KM, the preset interval is [ 90%, 110% ], and the value obtained by dividing the first distance by the second distance is about 91%, and is within the preset interval, the average of the first distance and the second distance is taken as the real-time distance, that is, 52.5 KM. Through setting up first distance and second distance, avoid the unable condition of evidentiary evidence of traditional single distance for first distance and second distance are mutual evidentiary evidence, thereby improve the accuracy of thundercloud and the real-time distance of target thunder and lightning monitoring station. And the target lightning monitoring station sends the real-time distance to the industrial personal computer, and the industrial personal computer displays corresponding early warning information according to the distance. For example, the distance is 30km from the lightning occurrence position, and yellow warning is performed; within 15km from the lightning generating position, carrying out red early warning; within 5km, orange warning is carried out. Through the setting, whether the local average electric field strength reaches the necessary condition of the thunderstorm is judged by judging whether the local average electric field strength is larger than a preset threshold value; the lightning monitoring station judges the position of nearby thundercloud according to the magnetic field component in each orthogonal direction, and calculates the first distance between the thundercloud and the target lightning monitoring station according to the ratio of the electric field component to the magnetic field component; each lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as arrival time of the electromagnetic waves, and calculates the second distance between the target monitoring station and the thunderclouds and the location of the thunderclouds by using the time difference method according to data of the lightning monitoring stations distributed in different locations. And generating accurate thundercloud distance information according to the first distance and the second distance. Accurate thundercloud information is acquired, so that accuracy of lightning early warning is improved.
Further, before the step S2 of acquiring the electric field component perpendicular to the ground of the lightning strike-back signal and the magnetic field component of each of the orthogonal directions of the lightning strike-back signal, the method includes:
S2A: acquiring a back-striking electric field signal sensed by an antenna of a target lightning monitoring station;
S2B: preprocessing the electric field signal to generate a clean electric field waveform;
S2C: carrying out waveform analysis on a larger waveform component in the electric field variation component of a target area, extracting characteristics, and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to a target lightning monitoring station;
S2D: and if so, generating instruction information for acquiring the electric field component perpendicular to the ground of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal.
In the embodiment of the invention, the signal receiver of the lightning monitoring and early warning system acquires the back-striking electric field signal sensed by the antenna of the lightning monitoring station. The signal receiver preprocesses the electric field signal, the processing mode comprises the technical processing of pre-stage amplification, filtering, gain adjustment, integral reduction, low-frequency suppression and the like, and the clean electric field waveform is output, so that the signal receiver can accurately identify the change of the waveform of the electric field component. The signal receiver performs waveform analysis on the larger waveform component in the electric field change component of the target area, extracts features, and identifies whether the electric field change component is a cloud ground flash-back signal. And if so, generating instruction information for acquiring the electric field component perpendicular to the ground of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal. Thundercloud lightning includes cloud and cloud-ground lightning, which are real threats to ground personnel and buildings. Through the arrangement, the lightning monitoring and early warning system can accurately distinguish cloud flashing and cloud ground flashing, the false alarm condition of cloud flashing in a target area is avoided, and the reliability of lightning early warning is further improved.
Further, before the step S1 of obtaining the average electric field strength of the area predicted by the target lightning monitoring station, the method includes:
s01: acquiring an electromagnetic wave signal of a target area according to a preset time interval, and judging whether the lightning monitoring and early warning system can output an early warning result or not by combining the current environment of the target area;
s02: if so, bringing preset measurement parameters into the lightning monitoring and early warning system, and further judging whether the lightning monitoring and early warning system works normally;
s03: and if so, finishing the self-checking of the system.
In the embodiment of the invention, the lightning monitoring and early warning system acquires electromagnetic wave signals of a target area according to a preset time interval, and judges whether the lightning monitoring and early warning system can output an early warning result or not by combining the current environment of the target area, so that whether the lightning monitoring and early warning system can realize basic functions or not, namely whether the lightning monitoring and early warning system can normally work or not is judged. If so, the industrial personal computer of the lightning monitoring and early warning system calls the measurement parameters prestored in the memory, namely the electromagnetic wave signals for self-checking, outputs an early warning result according to the electromagnetic wave signals and judges whether the output early warning result is consistent with the self-checking result corresponding to the electromagnetic wave signals. And if the two are consistent, the self-checking of the system is finished. Through the setting, whether basic function can be realized to lightning early warning monitoring system of preliminary examination, whether the early warning result of rethread measurement parameter judgement lightning monitoring early warning system output is accurate to the all-round self-checking to lightning monitoring early warning system has been accomplished.
Further, the step S7 of generating a real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance includes:
s71: generating a real-time distance range according to the first distance and a preset error range;
s72: judging whether the numerical value of the second distance is within the numerical value of the real-time distance range;
s73: if yes, the second distance is judged to be the real-time distance.
In the embodiment of the invention, compared with the method that the target lightning monitoring station generates the first distance by measuring the electromagnetic wave emitted by thunderclouds, the second distance generated by the lightning monitoring network formed by a plurality of lightning monitoring stations through the time difference method is more accurate. In the embodiment of the invention, the first distance and the preset error range generate a real-time distance range, so as to give a reference range to the real-time distance. And the lightning monitoring and early warning system judges whether the numerical value of the second distance is within the numerical value of the real-time distance range, and if so, the second distance is judged to be the real-time distance. Through the arrangement, the accuracy of the second distance is verified through the first distance, so that the accuracy of the real-time distance between the thundercloud and the target monitoring station is improved.
Further, the lightning monitoring station is provided with a lightning protection self-protection device, and before the step S1 of obtaining the average electric field strength of the area predicted by the target lightning monitoring station, the method includes:
s001, judging whether a lightning protection self-protection device of a power line of the target lightning monitoring station works normally or not;
s002: if yes, judging whether a lightning protection self-protection device of a specified part of the lightning monitoring station works normally;
and S003, if so, judging that the lightning protection self-protection device of the target lightning monitoring station works normally.
In the embodiment of the invention, the lightning protection self-protection device of the power line is the SPD lightning arrester, and the lightning monitoring and early warning system judges whether the lightning protection self-protection of the power line of the target lightning monitoring station works normally or not by judging whether the SPD lightning arrester works normally or not. In an embodiment of the invention, the designated components include a lightning rod, a network signal lightning protector, a signal surge protector and a combiner box. And the lightning monitoring and early warning system judges whether the specified part works normally, and if so, the lightning protection self-protection device of the target lightning monitoring station works normally. Through the arrangement, the lightning protection device of the target lightning monitoring station is inspected in an all-around manner, and the lightning protection performance of the target lightning monitoring station is guaranteed to the greatest extent.
Further, according to the real-time distance, after the step S8 of outputting the corresponding lightning early warning information of the lightning prediction area corresponding to the target lightning monitoring station, the method includes:
s81: acquiring the thunderstorm intensity of the thundercloud, and generating the thunderstorm grade of a local area;
s82: acquiring a distribution diagram of lightning protection devices near an area where a target lightning monitoring station is located and protection grade information corresponding to each lightning protection device;
s83: and analyzing the lightning protection devices with the protection levels not meeting the requirements of the thunderstorm levels, marking the lightning protection devices which do not reach the standard on the distribution diagram, and sending the marked distribution diagram to external equipment.
In the embodiment of the invention, the target lightning monitoring station acquires the thunderstorm intensity of thunderclouds to generate the thunderstorm grade of the local area. The distribution diagram of the lightning protection devices near the area where the target lightning monitoring station is located is prestored in the server or the target lightning monitoring station. And the lightning monitoring and early warning system acquires the distribution map and the protection grade information corresponding to each lightning protection device. The industrial personal computer of the lightning monitoring and early warning system analyzes the lightning protection device with the protection level meeting the requirements of the thunderstorm level, marks the lightning protection device which does not reach the standard on the distribution diagram, and sends the marked distribution diagram to external equipment, wherein the external equipment comprises but is not limited to a smart phone and a background server of operation and maintenance personnel. Through the arrangement, operation and maintenance personnel can intuitively know the protection condition of the lightning protection device and avoid dangerous areas.
Further, after the step S2 of acquiring the electric field component perpendicular to the ground of the lightning strike-back signal, the method includes:
S2A: and sending starting monitoring instruction information to the preset number of adjacent lightning monitoring stations of the target lightning monitoring station.
In the embodiment of the invention, after the target lightning monitoring station acquires the electric field component vertical to the ground of the lightning strike-back signal, the industrial personal computer of the lightning monitoring and early warning system sends the start-up monitoring instruction information to the adjacent lightning monitoring station, so that the lightning monitoring network can be used for monitoring in an instant linkage manner, and the automatic control of the lightning monitoring and early warning system is realized.
Further, according to the real-time distance, after the step S8 of outputting the corresponding lightning early warning information of the lightning prediction area corresponding to the target lightning monitoring station, the method includes:
s9: judging whether a lightning monitoring station adjacent to a target lightning monitoring station receives an electromagnetic signal generated by thundercloud;
s10: if not, detecting the positive charge distribution condition of the earth in the area where the target lightning monitoring station is located;
s11: if the density of positive charges of the earth of the target area is below a preset density range, an alarm is touched.
In the embodiment of the invention, the lightning monitoring and early warning system judges whether the lightning monitoring station adjacent to the target lightning monitoring station receives the electromagnetic signal generated by thundercloud or not, so as to eliminate the thundercloud around the target area. The positive charge distribution condition of the ground of the area is surveyed to target thunder and lightning monitoring station, if the density of the positive charge of the ground of target area is less than and predetermines the density range, negative charge of thundercloud lower extreme then can not attract ground positive charge, then explains that local area no longer produces cloud ground lightning stroke, and the warning can be relieved to thunder and lightning monitoring early warning system the very first time to make local regional personnel can resume production as early as possible.
Referring to fig. 2, the present invention provides a lightning early warning apparatus, including:
the first judgment module 1 is used for acquiring the average electric field intensity of an area predicted by a target lightning monitoring station and judging whether the average electric field intensity value is greater than a preset threshold value or not;
the first acquisition module 2 is used for acquiring an electric field component, perpendicular to the ground, of the lightning strike-back signal and a magnetic field component of each orthogonal direction of the lightning strike-back signal if the lightning strike-back signal is in the ground;
the first generation module 3 is configured to generate first thundercloud information according to the electric field component and the magnetic field component, where the first thundercloud information includes a first distance between the thundercloud and a target lightning monitoring station;
the time service module 4 is used for carrying out GPS time service on the target lightning monitoring stations and the adjacent lightning monitoring stations with the preset number;
the second acquisition module 5 is used for respectively acquiring the time of the lightning strike-back signal reaching the target lightning monitoring stations and the time of the lightning strike-back signal reaching the adjacent lightning monitoring stations in preset number;
the second generating module 6 is configured to generate second thundercloud information according to each time, where the second thundercloud information includes a second distance between the thundercloud and the target lightning monitoring station;
the third generation module 7 is used for generating the real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
and the early warning module 8 is used for outputting corresponding thunder early warning information of a thunder prediction area corresponding to the target thunder monitoring station according to the real-time distance.
In the embodiment of the invention, the lightning monitoring and early warning system comprises a lightning monitoring station, an industrial personal computer and a signal receiver, wherein the lightning monitoring station is used for acquiring electromagnetic signals of a local area, the signal receiver is used for processing the electromagnetic signals, and the industrial personal computer is used for sending control instruction information to the lightning monitoring station and storing and displaying data acquired by the lightning monitoring station. The industrial personal computer of the lightning monitoring and early warning system receives the average electric field strength of an area measured by a target lightning monitoring station and judges whether the local average electric field strength is greater than a preset threshold value or not, and the purpose is to judge whether the local average electric field strength meets the necessary condition of thunderstorm or not. And if so, acquiring an electric field component which is perpendicular to the ground of the lightning strike-back signal and a magnetic field component of each orthogonal direction of the lightning strike-back signal by the industrial personal computer, wherein the orthogonal directions comprise an east-west direction and a south-north direction. The lightning monitoring station judges the position of nearby thunderclouds according to the magnetic field components in the orthogonal directions, and calculates the distance between the thunderclouds and the target lightning monitoring station according to the ratio of the electric field components to the magnetic field components, namely first thundercloud information is generated, wherein the first thundercloud information comprises the first distance between the thunderclouds and the target lightning monitoring station and the position information of the thunderclouds. In the embodiment of the invention, the lightning monitoring and early warning system comprises a plurality of lightning monitoring stations, and the plurality of lightning monitoring stations form a lightning monitoring network. An industrial personal computer in the thunder early warning monitoring system sends control instruction information to each thunder monitoring station, so that GPS time service is carried out between a target thunder monitoring station and a preset number of thunder monitoring stations adjacent to the target thunder monitoring station, and the purpose of GPS time service is to achieve synchronization of system time and standard time. Each thunder and lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as the arrival time of the electromagnetic waves, calculates the thunderclouds in different places by using a time difference method according to data of a plurality of thunder and lightning monitoring stations distributed in different places, and the difference of any point causes that the calculated result and the actual result are greatly different due to the fact that the propagation speed of the electromagnetic waves reaches the light speed, so that the thunder and lightning monitoring stations are required to have high-precision synchronization time. And the lightning monitoring and early warning system generates second thundercloud information through a time difference method, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station. The lightning early warning monitoring system obtains the first distance and the second distance simultaneously. And judging whether the obtained numerical value is in a preset interval or not by mutually verifying the first distance and the second distance and dividing the first distance by the second distance. For example, if the first distance is 50KM, the second distance is 55KM, the preset interval is [ 90%, 110% ], and the value obtained by dividing the first distance by the second distance is about 91%, and is within the preset interval, the average of the first distance and the second distance is taken as the real-time distance, that is, 52.5 KM. Through setting up first distance and second distance, avoid the unable condition of evidentiary evidence of traditional single distance for first distance and second distance are mutual evidentiary evidence, thereby improve the accuracy of thundercloud and the real-time distance of target thunder and lightning monitoring station. And the target lightning monitoring station sends the real-time distance to the industrial personal computer, and the industrial personal computer displays corresponding early warning information according to the distance. For example, the distance is 30km from the lightning occurrence position, and yellow warning is performed; within 15km from the lightning generating position, carrying out red early warning; within 5km, orange warning is carried out. Through the setting, whether the local average electric field strength reaches the necessary condition of the thunderstorm is judged by judging whether the local average electric field strength is larger than a preset threshold value; the lightning monitoring station judges the position of nearby thundercloud according to the magnetic field component in each orthogonal direction, and calculates the first distance between the thundercloud and the target lightning monitoring station according to the ratio of the electric field component to the magnetic field component; each lightning monitoring station receives electromagnetic waves generated by thunderclouds, records parameters such as arrival time of the electromagnetic waves, and calculates the second distance between the target monitoring station and the thunderclouds and the location of the thunderclouds by using the time difference method according to data of the lightning monitoring stations distributed in different locations. And generating accurate thundercloud distance information according to the first distance and the second distance. Accurate thundercloud information is acquired, so that accuracy of lightning early warning is improved.
Further, the device for lightning early warning further comprises:
the third acquisition module is used for acquiring a back-striking electric field signal sensed by an antenna of the target lightning monitoring station;
the fourth generation module is used for preprocessing the electric field signal to generate a clean electric field waveform;
the second judgment module is used for carrying out waveform analysis on a larger waveform component in the electric field variation component of the target area, extracting characteristics and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to the target lightning monitoring station;
and the first execution module is used for generating instruction information for acquiring the electric field component, perpendicular to the ground, of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal if the lightning return stroke signal is in the normal direction.
In the embodiment of the invention, the signal receiver of the lightning monitoring and early warning system acquires the back-striking electric field signal sensed by the antenna of the lightning monitoring station. The signal receiver preprocesses the electric field signal, the processing mode comprises the technical processing of pre-stage amplification, filtering, gain adjustment, integral reduction, low-frequency suppression and the like, and the clean electric field waveform is output, so that the signal receiver can accurately identify the change of the waveform of the electric field component. The signal receiver performs waveform analysis on the larger waveform component in the electric field change component of the target area, extracts features, and identifies whether the electric field change component is a cloud ground flash-back signal. And if so, generating instruction information for acquiring the electric field component perpendicular to the ground of the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal. Thundercloud lightning includes cloud and cloud-ground lightning, which are real threats to ground personnel and buildings. Through the arrangement, the lightning monitoring and early warning system can accurately distinguish cloud flashing and cloud ground flashing, the false alarm condition of cloud flashing in a target area is avoided, and the reliability of lightning early warning is further improved.
Further, the device for lightning early warning further comprises:
the third judgment module is used for acquiring the electromagnetic wave signals of the target area according to the preset time interval and judging whether the lightning monitoring and early warning system can output the early warning result or not by combining the current environment of the target area;
the fourth judgment module is used for bringing the preset measurement parameters into the lightning monitoring and early warning system if the preset measurement parameters are positive, and further judging whether the lightning monitoring and early warning system works normally or not;
and the second execution module is used for finishing the system self-checking if the system self-checking is finished.
In the embodiment of the invention, the lightning monitoring and early warning system acquires electromagnetic wave signals of a target area according to a preset time interval, and judges whether the lightning monitoring and early warning system can output an early warning result or not by combining the current environment of the target area, so that whether the lightning monitoring and early warning system can realize basic functions or not, namely whether the lightning monitoring and early warning system can normally work or not is judged. If so, the industrial personal computer of the lightning monitoring and early warning system calls the measurement parameters prestored in the memory, namely the electromagnetic wave signals for self-checking, outputs an early warning result according to the electromagnetic wave signals and judges whether the output early warning result is consistent with the self-checking result corresponding to the electromagnetic wave signals. And if the two are consistent, the self-checking of the system is finished. Through the setting, whether basic function can be realized to lightning early warning monitoring system of preliminary examination, whether the early warning result of rethread measurement parameter judgement lightning monitoring early warning system output is accurate to the all-round self-checking to lightning monitoring early warning system has been accomplished.
Further, the third generating module 7 includes:
the generating submodule is used for generating a real-time distance range according to the first distance and a preset error range;
the judgment submodule is used for judging whether the numerical value of the second distance is within the numerical value of the real-time distance range;
and the execution submodule is used for judging that the second distance is the real-time distance if the second distance is the real-time distance.
In the embodiment of the invention, compared with the method that the target lightning monitoring station generates the first distance by measuring the electromagnetic wave emitted by thunderclouds, the second distance generated by the lightning monitoring network formed by a plurality of lightning monitoring stations through the time difference method is more accurate. In the embodiment of the invention, the first distance and the preset error range generate a real-time distance range, so as to give a reference range to the real-time distance. And the lightning monitoring and early warning system judges whether the numerical value of the second distance is within the numerical value of the real-time distance range, and if so, the second distance is judged to be the real-time distance. Through the arrangement, the accuracy of the second distance is verified through the first distance, so that the accuracy of the real-time distance between the thundercloud and the target monitoring station is improved.
Further, the device for lightning early warning further comprises:
the fifth judgment module is used for judging whether the lightning protection self-protection device of the power line of the target lightning monitoring station works normally or not;
the sixth judgment module is used for judging whether the lightning protection self-protection device of the specified part of the lightning monitoring station works normally or not if the lightning protection self-protection device of the specified part of the lightning monitoring station works normally;
and the third execution module is used for judging that the lightning protection self-protection device of the target lightning monitoring station works normally if the third execution module is yes.
In the embodiment of the invention, the lightning protection self-protection device of the power line is the SPD lightning arrester, and the lightning monitoring and early warning system judges whether the lightning protection self-protection of the power line of the target lightning monitoring station works normally or not by judging whether the SPD lightning arrester works normally or not. In an embodiment of the invention, the designated components include a lightning rod, a network signal lightning protector, a signal surge protector and a combiner box. And the lightning monitoring and early warning system judges whether the specified part works normally, and if so, the lightning protection self-protection device of the target lightning monitoring station works normally. Through the arrangement, the lightning protection device of the target lightning monitoring station is inspected in an all-around manner, and the lightning protection performance of the target lightning monitoring station is guaranteed to the greatest extent.
Further, the device for lightning early warning further comprises:
the fourth acquisition module is used for acquiring the thunderstorm intensity of the thundercloud and generating the thunderstorm level of the local area;
the fifth acquisition module is used for acquiring distribution maps of the lightning protection devices near the area where the target lightning monitoring station is located and protection grade information corresponding to each lightning protection device;
and the fourth execution module is used for analyzing the lightning protection devices with the protection levels not meeting the requirements of the thunderstorm levels, marking the lightning protection devices which do not reach the standard in the distribution diagram, and sending the marked distribution diagram to the external equipment.
In the embodiment of the invention, the target lightning monitoring station acquires the thunderstorm intensity of thunderclouds to generate the thunderstorm grade of the local area. The distribution diagram of the lightning protection devices near the area where the target lightning monitoring station is located is prestored in the server or the target lightning monitoring station. And the lightning monitoring and early warning system acquires the distribution map and the protection grade information corresponding to each lightning protection device. The industrial personal computer of the lightning monitoring and early warning system analyzes the lightning protection device with the protection level meeting the requirements of the thunderstorm level, marks the lightning protection device which does not reach the standard on the distribution diagram, and sends the marked distribution diagram to external equipment, wherein the external equipment comprises but is not limited to a smart phone and a background server of operation and maintenance personnel. Through the arrangement, operation and maintenance personnel can intuitively know the protection condition of the lightning protection device and avoid dangerous areas.
Further, the device for lightning early warning further comprises:
and the fifth execution module is used for sending the information of the monitoring starting instruction to the preset number of adjacent lightning monitoring stations of the target lightning monitoring station.
In the embodiment of the invention, after the target lightning monitoring station acquires the electric field component vertical to the ground of the lightning strike-back signal, the industrial personal computer of the lightning monitoring and early warning system sends the start-up monitoring instruction information to the adjacent lightning monitoring station, so that the lightning monitoring network can be used for monitoring in an instant linkage manner, and the automatic control of the lightning monitoring and early warning system is realized.
Further, the device for lightning early warning further comprises:
the seventh judging module is used for judging whether the lightning monitoring station adjacent to the target lightning monitoring station receives the electromagnetic signal generated by thundercloud;
the sixth execution module is used for detecting the positive charge distribution condition of the earth in the area where the target lightning monitoring station is located if the target lightning monitoring station is not located;
and the seventh execution module is used for contacting an alarm if the density of the positive charges of the earth of the target area is lower than the preset density range.
In the embodiment of the invention, the lightning monitoring and early warning system judges whether the lightning monitoring station adjacent to the target lightning monitoring station receives the electromagnetic signal generated by thundercloud or not, so as to eliminate the thundercloud around the target area. The positive charge distribution condition of the ground of the area is surveyed to target thunder and lightning monitoring station, if the density of the positive charge of the ground of target area is less than and predetermines the density range, negative charge of thundercloud lower extreme then can not attract ground positive charge, then explains that local area no longer produces cloud ground lightning stroke, and the warning can be relieved to thunder and lightning monitoring early warning system the very first time to make local regional personnel can resume production as early as possible.
Referring to fig. 3, the present application further provides a storage medium 100, in which a computer program 200 is stored in the storage medium 100, and when the computer program runs on a computer, the computer is enabled to execute the method for lightning early warning described in the above embodiment.
Referring to fig. 4, the present application further provides a computer device 300 containing instructions, which when run on the computer device 300, causes the computer device 300 to execute the method of lightning early warning described in the above embodiment through a processor 400 disposed therein.
It will be appreciated by those skilled in the art that the apparatus for lightning early warning according to the present invention and the above-mentioned devices are concerned for performing one or more of the methods described in the present application. These devices may be specially designed and manufactured for the required purposes, or they may comprise known devices in general-purpose computers. These devices have stored therein computer programs or applications that are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., computer) readable medium, including, but not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magnetic-optical disks, ROMs (Read-Only memories), RAMs (Random Access memories), EPROMs (Erasable Programmable Read-Only memories), EEPROMs (Electrically Erasable Programmable Read-Only memories), flash memories, magnetic cards, or optical cards, or any type of media suitable for storing electronic instructions, and each coupled to a bus. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The method for lightning early warning is characterized in that the method is applied to a lightning monitoring and early warning system, the lightning monitoring and early warning system comprises at least two lightning monitoring stations, and the method comprises the following steps:
acquiring the average electric field intensity of an area predicted by a target lightning monitoring station, and judging whether the average electric field intensity value is greater than a preset threshold value or not;
if so, acquiring an electric field component of the lightning strike-back signal, which is vertical to the ground, and magnetic field components of the lightning strike-back signal in each orthogonal direction;
generating first thundercloud information according to the electric field component and the magnetic field component, wherein the first thundercloud information comprises a first distance between the thundercloud and the target lightning monitoring station;
carrying out GPS time service on the target lightning monitoring stations and the neighboring lightning monitoring stations with preset number;
respectively acquiring the time of a lightning strike-back signal reaching the target lightning monitoring stations and the time of the adjacent lightning monitoring stations with the preset number;
generating second thundercloud information according to the time, wherein the second thundercloud information comprises a second distance between the thundercloud and the target lightning monitoring station;
generating a real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
and outputting corresponding lightning early warning information of a lightning prediction area corresponding to the target lightning monitoring station according to the real-time distance.
2. The method of lightning forewarning according to claim 1, wherein the step of acquiring the electric field component perpendicular to the ground of the lightning strike back signal and the magnetic field component in each orthogonal direction of the lightning strike back signal is preceded by:
acquiring a back-striking electric field signal sensed by an antenna of the target lightning monitoring station;
preprocessing the electric field signal to generate a clean electric field waveform;
carrying out waveform analysis on a larger waveform component in the electric field variation component of a target area, extracting characteristics, and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to the target lightning monitoring station;
and if so, generating instruction information of the electric field component which is perpendicular to the ground and is used for acquiring the lightning return stroke signal and the magnetic field component of each orthogonal direction of the lightning return stroke signal.
3. The method of lightning early warning according to claim 2, wherein the step of obtaining the average electric field strength of the area predicted by the target lightning monitoring station is preceded by the steps of:
acquiring electromagnetic wave signals of the target area according to a preset time interval, and judging whether the lightning monitoring and early warning system can output an early warning result or not by combining the current environment of the target area;
if yes, bringing preset measurement parameters into the lightning monitoring and early warning system, and further judging whether the lightning monitoring and early warning system works normally;
and if so, finishing the self-checking of the system.
4. The lightning early warning method according to claim 1, wherein the step of generating the real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance comprises:
generating a real-time distance range according to the first distance and a preset error range;
judging whether the numerical value of the second distance is within the numerical value of the real-time distance range;
and if so, determining that the second distance is the real-time distance.
5. The method of lightning early warning according to claim 1, wherein the lightning monitoring station has a lightning protection self-protection device, and the step of obtaining the average electric field strength of the area predicted by the target lightning monitoring station is preceded by the steps of:
judging whether a lightning protection self-protection device of a power line of the target lightning monitoring station works normally or not;
if yes, judging whether a lightning protection self-protection device of a specified part of the target lightning monitoring station works normally;
and if so, judging that the lightning protection self-protection device of the target lightning monitoring station works normally.
6. A lightning early warning device, comprising:
the first judgment module is used for acquiring the average electric field intensity of an area predicted by a target lightning monitoring station and judging whether the average electric field intensity value is greater than a preset threshold value or not;
the first acquisition module is used for acquiring an electric field component, perpendicular to the ground, of the lightning strike-back signal and a magnetic field component of each orthogonal direction of the lightning strike-back signal if the lightning strike-back signal is in the ground;
the first generation module is used for generating first thundercloud information according to the electric field component and the magnetic field component, wherein the first thundercloud information comprises a first distance between the thundercloud and the target lightning monitoring station;
the time service module is used for carrying out GPS time service on the target lightning monitoring stations and the adjacent lightning monitoring stations with the preset number;
the second acquisition module is used for respectively acquiring the time of the lightning strike-back signal reaching the target lightning monitoring stations and the time of the lightning strike-back signals reaching the adjacent lightning monitoring stations with the preset number;
a second generating module, configured to generate second thundercloud information according to each of the times, where the second thundercloud information includes a second distance between the thundercloud and the target lightning monitoring station;
the third generating module is used for generating the real-time distance between the thundercloud and the target lightning monitoring station according to the first distance and the second distance;
and the early warning module is used for outputting corresponding thunder and lightning early warning information of a thunder and lightning prediction area corresponding to the target thunder and lightning monitoring station according to the real-time distance.
7. The lightning early warning apparatus of claim 6, further comprising:
the third acquisition module is used for acquiring a back-striking electric field signal sensed by an antenna of the target lightning monitoring station;
the fourth generation module is used for preprocessing the electric field signal to generate a clean electric field waveform;
the second judgment module is used for carrying out waveform analysis on a larger waveform component in the electric field variation component of a target area, extracting characteristics and identifying whether the electric field variation component is a cloud ground flash-back signal or not, wherein the target area is a lightning prediction area corresponding to the target lightning monitoring station;
and the first execution module is used for generating instruction information of an electric field component which is vertical to the ground and acquires the lightning return stroke signal and a magnetic field component of each orthogonal direction of the lightning return stroke signal if the lightning return stroke signal is in the normal direction.
8. The lightning early warning apparatus of claim 7, further comprising:
the third judgment module is used for collecting the electromagnetic wave signals of the target area according to a preset time interval and judging whether the electromagnetic wave signals are normal or not by combining the current environment of the target area;
the fourth judgment module is used for bringing preset measurement parameters into the lightning monitoring and early warning system if the preset measurement parameters are positive, and judging whether the lightning monitoring and early warning system works normally or not;
and the second execution module is used for finishing the system self-checking if the system self-checking is finished.
9. A storage medium, characterized in that it is a computer-readable storage medium, on which a computer program is stored, which when executed implements a method of lightning alerting as claimed in any one of claims 1 to 5.
10. A computer device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the method of lightning alerting according to any one of claims 1-5 when executing the computer program.
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| CN111679133A (en) * | 2020-06-05 | 2020-09-18 | 上海眼控科技股份有限公司 | Lightning positioning method and device, computer equipment and storage medium |
| CN113219259A (en) * | 2021-04-26 | 2021-08-06 | 吉林省气候中心 | Lightning early warning method, device, equipment and storage medium |
| CN113629492B (en) * | 2021-06-30 | 2022-10-21 | 广东电网有限责任公司广州供电局 | Active lightning attracting method, active lightning attracting device and computer readable storage medium |
| CN113985145A (en) * | 2021-09-13 | 2022-01-28 | 广东电网有限责任公司广州供电局 | Thunder and lightning early warning method, early warning device and computer readable storage medium |
| CN114812698B (en) * | 2022-07-01 | 2022-09-30 | 江西信息应用职业技术学院 | Lightning protection monitoring method and device, readable storage medium and electronic equipment |
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| CN117929861A (en) * | 2024-03-21 | 2024-04-26 | 云南能源投资股份有限公司 | Lightning detection method, device and equipment for wind power plant and storage medium |
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