CN108680798B - Lightning monitoring and early warning method and system - Google Patents
Lightning monitoring and early warning method and system Download PDFInfo
- Publication number
- CN108680798B CN108680798B CN201810283156.3A CN201810283156A CN108680798B CN 108680798 B CN108680798 B CN 108680798B CN 201810283156 A CN201810283156 A CN 201810283156A CN 108680798 B CN108680798 B CN 108680798B
- Authority
- CN
- China
- Prior art keywords
- electric field
- value
- preset
- early warning
- judgment value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/10—Devices for predicting weather conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a lightning monitoring and early warning method, which comprises the steps of obtaining an electric field signal measured by an atmospheric electric field instrument; sequentially selecting electric field strength values of three continuous time points in the electric field signal as a pre-judgment value group; judging whether the electric field intensity value of the last time point in the pre-judgment value group is greater than a preset threshold value or not; when the electric field intensity value of the last time point in the pre-judgment value group is larger than a preset threshold value, judging whether the pre-judgment value group meets a preset condition or not; and when the pre-judgment value group meets the preset condition, sending out an early warning signal. The invention also correspondingly discloses a lightning monitoring and early warning system. According to the invention, the preset threshold value is set before the electric field intensity value measured by the atmospheric electric field instrument is compared with the preset condition, and the lightning early warning judgment method is further optimized, so that the accuracy of lightning early warning based on atmospheric electric field instrument equipment is greatly improved.
Description
Technical Field
The invention relates to the technical field of lightning early warning, in particular to a method and a system for improving lightning monitoring early warning capacity.
Background
With the development of economy and modern science and technology, the aspects of power electronics, communication, aviation and the like in China are correspondingly developed. However, the lightning threatens the normal operation of the electronic equipment all the time, and although some existing equipment are provided with corresponding lightning protection devices, because lightning strike discharges to release strong energy instantaneously, if the electronic equipment is hit by strong lightning during working, the lightning protection devices often cannot play a good protection role, so that a large amount of electronic equipment is damaged.
People establish a lightning monitoring and early warning system in order to prevent the damage of lightning to electronic equipment, when lightning stroke comes, the lightning monitoring and early warning system sends out corresponding early warning information, and people take certain measures according to the early warning information, if instrument equipment which is working is closed, outdoor operation personnel can be protected in time, and the loss caused by the lightning stroke can be effectively reduced. Most of the existing lightning monitoring and early warning systems perform early warning based on a threshold value method, and the early warning method only performs early warning by judging whether the electric field strength value exceeds a preset threshold value, so that the virtual warning rate is high. Meanwhile, the preset threshold of the existing lightning monitoring and early warning system is often not corrected after being set, and when the system environment changes due to some reasons, the preset threshold needs to be manually corrected, so that the lightning monitoring and early warning system is inconvenient to operate.
Therefore, a lightning monitoring and early warning method with higher judgment precision and capable of automatically updating the judgment conditions is needed.
Disclosure of Invention
The invention aims to solve the technical problem that the existing lightning monitoring and early warning system only adopts a threshold value method to carry out early warning, and the lightning early warning accuracy rate is low.
In order to solve the technical problem, the invention provides a lightning monitoring and early warning method, which comprises the following steps:
acquiring an electric field signal measured by an atmospheric electric field instrument;
sequentially selecting electric field strength values of three continuous time points in the electric field signal as a pre-judgment value group; judging whether the electric field intensity value of the last time point in the preset judgment value group is greater than or equal to a preset threshold value or not;
when the electric field intensity value of the last time point in the preset judgment value group is greater than or equal to the preset threshold value, judging whether the preset judgment value group meets a preset condition;
and when the preset judgment value group meets the preset condition, sending out an early warning signal.
Preferably, the preset condition includes a first condition that the electric field strength values of the pre-determination value group sequentially increase or decrease in time order.
Preferably, the preset condition further includes a second condition that an absolute value of a difference between the electric field intensity values at two adjacent time points in the set of predetermined determination values is greater than or equal to a preset electric field variation value.
Preferably, the method further comprises the step of counting the accuracy of the alarm signal within a preset time, and adjusting the preset threshold value and the preset electric field change value according to the counting result.
Preferably, the preset threshold includes a primary threshold, a secondary threshold and a tertiary threshold, and the preset electric field variation value includes a primary electric field variation value, a secondary electric field variation value and a tertiary electric field variation value; the early warning signals comprise primary warning signals, secondary warning signals and tertiary warning signals, and the preset threshold value, the preset electric field change value and the early warning signals are in one-to-one correspondence in sequence.
Preferably, the step of determining whether the electric field intensity value at the last time point in the set of predetermined determination values is greater than a predetermined threshold specifically includes:
and sequentially judging whether the electric field strength value of the last time point in the pre-judgment value group is greater than or equal to a third-level threshold, a second-level threshold and a first-level threshold.
Preferably, when the electric field intensity value of the last time point in the set of pre-determination values is greater than or equal to the preset threshold, the step of determining whether the set of pre-determination values meets preset conditions specifically includes:
when the electric field strength value of the last time point in the pre-judgment value set is judged to be more than or equal to a three-level threshold value, judging whether the pre-judgment value set meets the first condition or not, and judging whether the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value set is more than or equal to a three-level electric field change value or not;
when the electric field strength value of the last time point in the pre-judgment value group is judged to be larger than or equal to the secondary threshold value, judging whether the pre-judgment value group meets the first condition or not, and judging whether the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is larger than or equal to the secondary electric field change value or not;
and when the electric field strength value of the last time point in the pre-judgment value group is judged to be greater than or equal to the first-level threshold value, judging whether the pre-judgment value group meets the first condition or not, and judging whether the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the first-level electric field change value or not.
Preferably, when the set of predetermined values meets a predetermined condition, the step of sending an early warning signal specifically comprises:
when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to a three-level electric field change value, sending a three-level alarm signal;
when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to a secondary electric field change value, a secondary alarm signal is sent out;
and when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the first-level electric field change value, sending a first-level alarm signal.
According to another aspect of the present invention, there is provided a lightning monitoring and early warning system, comprising an atmospheric electric field instrument and a warning device connected to the atmospheric electric field instrument, wherein the atmospheric electric field instrument comprises an atmospheric electric field instrument body, a data processor disposed in the atmospheric electric field instrument body, and a computer readable storage medium storing a computer program, and the computer program is executable by the data processor to perform all the steps of the lightning monitoring and early warning method.
Preferably, the lightning monitoring and early warning system comprises a plurality of atmospheric electric field instruments.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
by applying the lightning monitoring and early warning method provided by the embodiment of the invention, whether the electric field strength value is necessary to be compared with the preset condition is judged by judging whether the electric field strength values of three continuous time points meet the preset threshold value, namely the preset condition is set after the electric field strength value measured by the atmospheric electric field instrument is compared with the preset threshold value, the electric field strength value is compared with the preset condition only after the electric field strength value meets the preset threshold value, whether the early warning signal is sent or not is judged, and the lightning early warning judgment method is further optimized by reasonably limiting more judgment conditions, so that the accuracy of lightning early warning based on the atmospheric electric field instrument equipment is greatly improved, the false alarm rate is reduced, the reliability of the whole system is improved, and the atmospheric electric field data is more effectively and accurately utilized to carry out lightning early warning. Meanwhile, the preset conditions and the preset threshold value are automatically updated, so that the lightning monitoring and early warning system can accurately send out alarm signals when the system environment changes, the quality monitoring capability of equipment operation in a monitoring area is further improved, decision basis can be provided for weather early warning and forecasting, and the development of the weather career in China is positively promoted.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating steps of a lightning monitoring and warning method according to a first embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a lightning monitoring and early warning system in the second embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
With the development of science and technology, the aspects of power electronics, communication, aviation and the like in China are greatly developed, and the arrangement of corresponding electronic power equipment and the like is gradually increased. In order to prevent the damage of lightning to the electronic equipment, the existing electronic equipment is provided with corresponding lightning protection devices, but the lightning protection devices cannot usually prevent the high-energy lightning. Therefore, in order to better prevent lightning, a lightning monitoring and early warning system is correspondingly established, when lightning stroke comes, the lightning monitoring and early warning system sends out corresponding early warning information, and people take certain measures according to the early warning information, such as closing the working instrument and equipment, and timely protecting outdoor operators, so that the loss caused by the lightning stroke can be effectively reduced. However, most of the existing lightning monitoring and early warning systems only perform early warning based on a threshold value method, and due to the fact that early warning conditions are simple, the early warning method is often high in false warning rate. And cannot play a good early warning role.
Example one
In order to solve the technical problems in the prior art, the embodiment of the invention provides a lightning monitoring and early warning method.
Fig. 1 is a schematic diagram illustrating steps of a lightning monitoring and warning method according to a first embodiment of the present invention; referring to fig. 1, the lightning monitoring and early warning method of the embodiment includes the following steps:
step S101: and acquiring an electric field signal measured by an atmospheric electric field instrument.
Specifically, the atmospheric electric field instrument is arranged at a position where lightning needs to be monitored in advance, electric field signals within preset time measured by the atmospheric electric field instrument are regularly acquired, and the electric field signals are a set formed by electric field intensity values within a specified time period. Preferably, the prescribed time period may be set to 1 second, and the time interval for acquiring the electric field signal may be set to 1 second, so that uninterrupted lightning monitoring throughout the day may be achieved.
It should be noted that, the existing atmospheric electric field meter usually monitors the electric field strength once per second, so the atmospheric electric field meter can obtain an electric field strength value every second. However, the frequency of monitoring the electric field intensity by the atmospheric electric field meter is not limited to this, and other atmospheric electric field meters of monitoring frequencies are also applicable to this acquisition method. Meanwhile, in order to better monitor the lightning, the set time period can be set to other reasonable values, and the electric field signal measured by the atmospheric electric field instrument can be obtained discontinuously, but the invention is not limited to the method.
Step S102: and sequentially selecting electric field strength values of three continuous time points in the electric field signal as a pre-judgment value group.
Specifically, electric field strength values of three continuous time points are selected from the electric field signals to be used as a pre-judgment value group, the selected pre-judgment value group is sent to the next step, the next step is used for processing the pre-judgment value group, after the processing is finished, electric field strength values of the other three continuous time points are sequentially selected from the same electric field signal to be used as the pre-judgment value group and are sent to the next step again for judgment, and the like is carried out until all the electric field strength values in the electric field signal are selected. Preferably, for better monitoring of lightning, the set of pre-determined values is selected from the first electric field strength value in the electric field signal. Meanwhile, in order to better explain the pre-judgment value group, the following is a specific process of a selection mode: the method comprises the steps of firstly, selecting electric field strength values of three continuous time points from an electric field strength value of a first time point in an electric field signal, namely selecting electric field strength values of the first three time points in the electric field signal as a pre-judgment value group. And then sending the pre-judgment value to a next step, processing the pre-judgment group in the next step, selecting the electric field strength values of three continuous time points as a new pre-judgment value group from the electric field strength value of a second time point in the same electric field signal after the pre-judgment group is processed, sending the new pre-judgment value group to the next step for judgment, and repeating the steps until all the electric field strength values in the electric field signal are selected.
Step S103: and judging whether the electric field intensity value of the last time point in the pre-judgment value group is greater than a preset threshold value.
Specifically, the preset threshold includes a primary threshold, a secondary threshold and a tertiary threshold, and the threshold is gradually increased, that is, the tertiary threshold is greater than the secondary threshold, and the secondary threshold is greater than the primary threshold. And sequentially comparing the electric field intensity value of the last time point in the pre-judgment value group with a preset threshold value. Further, the electric field intensity value of the last time point in the pre-judgment value group is compared with the three-level threshold, and when the electric field intensity value of the last time point is greater than or equal to the three-level threshold, the preset condition corresponding to the pre-judgment value group and the three-level threshold is judged. And when the electric field intensity value of the last time point is greater than or equal to the second-level threshold and smaller than the third-level threshold, judging the preset condition corresponding to the pre-judgment value group and the second-level threshold. And when the electric field strength value of the last time point is greater than or equal to the primary threshold and smaller than the secondary threshold, judging the preset condition corresponding to the pre-judgment value group and the primary threshold.
Step S104: and when the electric field intensity value of the last time point in the pre-judgment value group is greater than a preset threshold value, judging whether the pre-judgment value group meets a preset condition.
Specifically, the preset conditions include a first condition and a second condition, wherein the first condition is that the electric field values of the pre-judgment value group sequentially increase or decrease in time sequence; the second condition is that the absolute value of the difference between the electric field values of two adjacent time points in the pre-judgment value group is larger than the preset electric field change value. Meanwhile, the preset electric field change value comprises a first-level electric field change value, a second-level electric field change value and a third-level electric field change value, and the preset threshold value corresponds to the preset electric field change value one to one. Further, when the electric field intensity value of the last time point in the pre-judgment value group is judged to be greater than or equal to the three-level threshold value, whether the pre-judgment value group meets the first condition or not is judged, and whether the absolute value of the difference between the electric field intensity values of two adjacent time points in the pre-judgment value group is greater than or equal to the three-level electric field change value or not is judged; and when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the three-level electric field change value, judging that the probability of lightning is high, and simultaneously sending a corresponding signal to the early warning device. Otherwise, the electric field intensity value is classified as the electric field intensity value of the last time point in the pre-judgment value group which is greater than or equal to the secondary threshold value, and the judgment is continued. When the electric field strength value of the last time point in the pre-judgment value set is judged to be larger than or equal to the secondary threshold value, judging whether the pre-judgment value set meets the first condition or not, and judging whether the absolute value of the difference of the electric field strength values of two adjacent time points in the pre-judgment value set is larger than or equal to the secondary electric field change value or not; and when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the second-level electric field change value, judging that the probability of lightning belongs to the medium level, and simultaneously sending a corresponding signal to the early warning device. Otherwise, the electric field intensity value is classified as the electric field intensity value of the last time point in the pre-judgment value group which is greater than or equal to the first-level threshold value, and the electric field intensity value is continuously judged. When the electric field strength value of the last time point in the pre-judgment value group is judged to be more than or equal to the first-level threshold value, judging whether the pre-judgment value group meets the first condition or not, and judging whether the absolute value of the difference of the electric field strength values of two adjacent time points in the pre-judgment value group is more than or equal to the first-level electric field change value or not; and when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the first-level electric field change value, judging that the probability of lightning belongs to a low level, and simultaneously sending a corresponding signal to the early warning device. Otherwise, the pre-judgment group is judged to be completed without sending an alarm signal, and step S102 is to select the pre-judgment group again.
To further illustrate the determination process, assuming that electric field strength values in the pre-determination value group are respectively V1, V2 and V3 according to the chronological order, when the electric field strength value at the last time point in the pre-determination value group is greater than or equal to a three-level threshold and (V1-V2) × (V2-V3) >0, (V1-V2) > △ V3, (V2-V3) > △ V3, a corresponding signal is sent to the early warning device at the same time, when the electric field strength value at the last time point is less than the three-level threshold but greater than or equal to a two-level threshold and (V3-V3) 3 (V3-V3) >0, (V3-V3) > 3) is judged to be of a medium level, and when the electric field strength value at the pre-determination value is greater than or equal to a two-level threshold and (V3) is greater than or equal to the pre-V3, when the electric field strength value at the pre-determination value is greater than or equal to the predetermined threshold, the predetermined value, the pre-V3, a corresponding signal is sent to the pre-V3, a corresponding signal is sent to a pre-3, a pre.
Specifically, the early warning signal of the early warning device comprises a first-level alarm signal, a second-level alarm signal and a third-level alarm signal, and the preset electric field change value comprises a first-level electric field change value, a second-level electric field change value and a third-level electric field change value, and is respectively in one-to-one correspondence with the first-level alarm signal, the second-level alarm signal and the third-level alarm signal of the early warning signal. The higher the number of the alarm signal stages is, the higher the probability of lightning occurrence is, namely, the higher the emergency degree of lightning prevention is. When the electric field strength value of the last time point in the pre-judgment value group which accords with the preset condition is greater than or equal to the three-level electric field change value, the early warning device sends out a three-level warning signal, when the electric field strength value of the last time point is greater than or equal to the two-level electric field change value, the early warning device sends out a two-level warning signal, and when the electric field strength value of the last time point is greater than or equal to the one-level electric field change value, the early warning device sends out a one-level warning signal. It should be noted that the warning signal continues for a preset duration after being sent out, and when the warning device receives a new warning signal within the period of time, the warning device sends out a new warning signal, and the new warning signal continues for the preset duration, so as to achieve a good warning effect.
Step S106: and counting the accuracy of the alarm signal within the preset time, and adjusting the preset threshold value and the preset electric field change value according to the counting result.
Specifically, the accuracy of the alarm signal within the preset time is counted, and when the accuracy is lower than a preset value, the preset condition and the preset threshold are adjusted according to the counting result. Furthermore, setting the preset time to be one month, counting the accuracy of the alarm signal within one month, calculating a preset threshold value and a preset electric field change value based on data measured by an atmospheric electric field instrument when lightning occurs for the first time when the accuracy is lower than the preset value, replacing the original preset threshold value and the original preset electric field change value with the calculated preset threshold value and the calculated preset electric field change value, and adjusting the alarm signal according to the subsequent statistical result of the accuracy of the alarm signal. The specific adjusting process is as follows: when the statistical result shows that the alarm signal gives an alarm in advance for a long time, increasing the value of a threshold span quantity by the existing preset threshold, wherein the threshold span quantity can be 500V/M; when the statistical result shows that the alarm signal gives an alarm in advance for a short time, increasing the change value of the existing preset electric field by a value of change rate span quantity, wherein the change rate span quantity can be 50V/M; when the statistical result shows that the alarm signal lags for a long time, the existing preset threshold value is reduced by a value of adding a threshold span amount, and when the statistical result shows that the alarm signal lags for a short time, the existing preset electric field change value is reduced by a value of a change rate span amount; and repeating the adjustment until the accuracy is not lower than the preset value. Preferably, the preset value may be 90%.
It should be noted that the initial preset threshold and the preset electric field variation value are default preset threshold and preset electric field variation value, the default preset electric field variation value is respectively a primary electric field variation value of 200V/M, a secondary electric field variation value of 400V/M, a tertiary electric field variation value of 500V/M, the preset threshold is respectively a tertiary threshold of 8000V/M, a secondary threshold of 5000V/M, and a primary threshold of 3000V/M. Through statistics of the accuracy rate of the alarm signals within the preset time, the preset threshold value and the preset electric field change value are adjusted, the lightning detection early warning capability is further improved, and the lightning monitoring early warning system can accurately send out alarm signals when the system environment changes.
By applying the thunder monitoring and early warning method, the preset conditions are set before the electric field strength value measured by the atmospheric electric field instrument is compared with the preset threshold value, the thunder early warning judgment method is further optimized, so that the accuracy of thunder early warning based on atmospheric electric field instrument equipment is greatly improved, the false alarm rate is reduced, the reliability of thunder detection and early warning is improved, the atmospheric electric field data is more effectively and accurately utilized for thunder early warning, the quality monitoring of equipment operation in a monitoring area is also improved, a decision basis can be provided for weather early warning forecast, and the method plays a positive promoting role in the development of the weather career in China.
Example two
In order to solve the technical problems in the prior art, the embodiment of the invention also provides a lightning monitoring and early warning system.
FIG. 2 is a schematic structural diagram of a lightning monitoring and warning system according to a second embodiment of the present invention; referring to fig. 2, in the present embodiment, a plurality of atmospheric electric field instruments and an alarm device are provided, the atmospheric electric field instruments are all connected to the alarm device, and each atmospheric electric field instrument includes an atmospheric electric field instrument body, a data processor disposed in the atmospheric electric field instrument body, and a computer-readable storage medium storing a computer program.
The computer program is executable by a data processor to perform the steps of:
step S201: and acquiring an electric field signal measured by an atmospheric electric field instrument.
Specifically, the atmospheric electric field instrument is arranged at a position where lightning needs to be monitored in advance, electric field signals within preset time measured by the atmospheric electric field instrument are regularly acquired, and the electric field signals are a set formed by electric field intensity values within a specified time period. The process of further obtaining the measured electric field signal of the atmospheric electric field meter is the same as the first embodiment, and is not described herein again.
Step S202: and sequentially selecting electric field strength values of three continuous time points in the electric field signal as a pre-judgment value group.
Specifically, electric field strength values of three continuous time points are selected from the electric field signals to be used as a pre-judgment value group, the selected pre-judgment value group is sent to the next step, the next step is used for processing the pre-judgment value group, after the processing is finished, electric field strength values of the other three continuous time points are sequentially selected from the same electric field signal to be used as the pre-judgment value group and are sent to the next step again for judgment, and the like is carried out until all the electric field strength values in the electric field signal are selected. The specific process of selecting the predetermined value set is the same as that in the first embodiment, and is not described in detail herein.
Step S203: and judging whether the electric field intensity value of the last time point in the pre-judgment value group is greater than a preset threshold value.
The preset threshold comprises a primary threshold, a secondary threshold and a tertiary threshold, and the threshold is gradually increased. And sequentially comparing the electric field intensity value of the last time point in the pre-judgment value group with a preset threshold value. Specifically, the electric field intensity value of the last time point in the pre-judgment value group is compared with the three-level threshold, and when the electric field intensity value of the last time point is greater than or equal to the three-level threshold, the preset condition corresponding to the pre-judgment value group and the three-level threshold is judged. And when the electric field strength value of the last time point is greater than or equal to the secondary threshold, judging the preset condition corresponding to the pre-judgment value group and the secondary threshold. And when the electric field strength value of the last time point is greater than or equal to the primary threshold, judging the preset condition of the pre-judgment value group corresponding to the primary threshold.
Step S204: and when the electric field intensity value of the last time point in the pre-judgment value group is greater than a preset threshold value, judging whether the pre-judgment value group meets a preset condition.
Specifically, the preset conditions include a first condition and a second condition, wherein the first condition is that the electric field values of the pre-judgment value group sequentially increase or decrease in time sequence; the second condition is that the absolute value of the difference between the electric field values of two adjacent time points in the pre-judgment value group is larger than the preset electric field change value. Meanwhile, the preset electric field change value comprises a first-level electric field change value, a second-level electric field change value and a third-level electric field change value, and the preset threshold value corresponds to the preset electric field change value one to one. The specific process of determining whether the preset value group meets the preset condition is the same as the first embodiment, and is not described herein again.
Step S205: and when the pre-judgment value group meets the preset condition, sending out an early warning signal.
Specifically, the early warning signal of the early warning device comprises a first-level alarm signal, a second-level alarm signal and a third-level alarm signal, and the preset electric field change value comprises a first-level electric field change value, a second-level electric field change value and a third-level electric field change value, and is respectively in one-to-one correspondence with the first-level alarm signal, the second-level alarm signal and the third-level alarm signal of the early warning signal. The higher the number of the alarm signal stages is, the higher the probability of lightning occurrence is, namely, the higher the emergency degree of lightning prevention is. And when the electric field intensity value of the last time point in the pre-judgment value group which meets the preset condition is greater than or equal to the corresponding electric field change value, the early warning device sends out a corresponding warning signal. The specific process of sending out the corresponding alarm signal is the same as that in the first embodiment, and is not described herein again.
Step S206: and counting the accuracy of the alarm signal within the preset time, and adjusting the preset threshold value and the preset electric field change value according to the counting result.
Specifically, the accuracy of the alarm signal within the preset time is counted, and when the accuracy is lower than a preset value, the preset condition and the preset threshold are adjusted according to the counting result. The specific adjustment process of the preset condition and the preset threshold is the same as that in the first embodiment, and will not be described herein again.
By applying the lightning monitoring and early warning system provided by the embodiment of the invention, the preset threshold value is set before the electric field strength value measured by the atmospheric electric field instrument is compared with the preset condition, and the lightning early warning judgment method is further optimized, so that the accuracy of lightning early warning based on atmospheric electric field instrument equipment is greatly improved, the false alarm rate is reduced, the reliability of lightning detection and early warning is improved, the atmospheric electric field data is more effectively and accurately utilized for lightning early warning, the quality monitoring of equipment operation in a monitoring area is also improved, a decision basis can be provided for weather early warning and forecast, and the development of the weather industry in China is actively promoted.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A lightning monitoring and early warning method comprises the following steps:
acquiring an electric field signal measured by an atmospheric electric field instrument;
sequentially selecting electric field strength values of three continuous time points in the electric field signal as a pre-judgment value group; judging whether the electric field intensity value of the last time point in the preset judgment value group is greater than or equal to a preset threshold value or not;
when the electric field intensity value of the last time point in the preset judgment value group is greater than or equal to the preset threshold value, judging whether the preset judgment value group meets a preset condition;
when the preset judgment value group meets a preset condition, sending an early warning signal;
the preset conditions comprise a first condition, and the first condition is that the electric field intensity values of the pre-judgment value set sequentially increase or decrease in time sequence.
2. The method according to claim 1, wherein the predetermined condition further includes a second condition that an absolute value of a difference between the electric field strength values at two adjacent time points in the predetermined determination value set is equal to or greater than a predetermined electric field variation value.
3. The method of claim 2, further comprising counting an accuracy of the alarm signal for a predetermined time, and adjusting the predetermined threshold value and the predetermined electric field variation value according to the counted result.
4. The method of claim 3, wherein the preset threshold values comprise a primary threshold value, a secondary threshold value and a tertiary threshold value, and the preset electric field variation values comprise a primary electric field variation value, a secondary electric field variation value and a tertiary electric field variation value; the early warning signals comprise primary warning signals, secondary warning signals and tertiary warning signals, and the preset threshold value, the preset electric field change value and the early warning signals are in one-to-one correspondence in sequence.
5. The method according to claim 4, wherein the step of determining whether the electric field strength value at the last time point in the set of predetermined values is greater than a predetermined threshold value comprises:
and sequentially judging whether the electric field strength value of the last time point in the pre-judgment value group is greater than or equal to a third-level threshold, a second-level threshold and a first-level threshold.
6. The method according to claim 5, wherein when the electric field intensity value at the last time point in the predetermined value set is greater than or equal to the predetermined threshold, the step of determining whether the predetermined value set meets the predetermined condition includes:
when the electric field strength value of the last time point in the pre-judgment value set is judged to be more than or equal to a three-level threshold value, judging whether the pre-judgment value set meets the first condition or not, and judging whether the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value set is more than a three-level electric field change value or not;
when the electric field intensity value of the last time point in the pre-judgment value group is judged to be larger than or equal to the secondary threshold value, judging whether the pre-judgment value group meets the first condition or not, and judging whether the absolute value of the difference between the electric field intensity values of two adjacent time points in the pre-judgment value group is larger than the secondary electric field change value or not;
and when the electric field strength value of the last time point in the pre-judgment value group is judged to be larger than or equal to the first-level threshold value, judging whether the pre-judgment value group meets the first condition or not, and judging whether the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is larger than the first-level electric field change value or not.
7. The method according to claim 6, wherein when the predetermined set of values meets a predetermined condition, the step of sending an early warning signal comprises:
when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to a three-level electric field change value, sending a three-level alarm signal;
when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to a secondary electric field change value, a secondary alarm signal is sent out;
and when the pre-judgment value group meets the first condition and the absolute value of the difference between the electric field strength values of two adjacent time points in the pre-judgment value group is greater than or equal to the first-level electric field change value, sending a first-level alarm signal.
8. A lightning monitoring and early warning system, characterized by comprising an atmospheric electric field instrument and a warning device connected with the atmospheric electric field instrument, wherein the atmospheric electric field instrument comprises an atmospheric electric field instrument body, a data processor arranged in the atmospheric electric field instrument body and a computer readable storage medium storing a computer program, and the computer program can be executed by the data processor to complete the steps of the lightning monitoring and early warning method according to any one of the claims 1 to 7.
9. The system of claim 8, wherein the lightning monitoring and warning system comprises a plurality of the atmospheric electric field meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283156.3A CN108680798B (en) | 2018-04-02 | 2018-04-02 | Lightning monitoring and early warning method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283156.3A CN108680798B (en) | 2018-04-02 | 2018-04-02 | Lightning monitoring and early warning method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108680798A CN108680798A (en) | 2018-10-19 |
| CN108680798B true CN108680798B (en) | 2020-07-31 |
Family
ID=63799699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810283156.3A Active CN108680798B (en) | 2018-04-02 | 2018-04-02 | Lightning monitoring and early warning method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108680798B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533835A (en) * | 2020-04-20 | 2021-10-22 | 中国石油化工股份有限公司 | Thunder early warning system and method based on thunder and electric field detection technology |
| CN113203896B (en) * | 2021-05-19 | 2023-10-03 | 贵州省气象灾害防御技术中心 | Threshold method inspection and improvement method for lightning early warning by single-station atmospheric electric field instrument |
| CN113567763A (en) * | 2021-08-09 | 2021-10-29 | 厦门大恒科技有限公司 | Lightning early warning method and lightning early warning device |
| CN113985148A (en) * | 2021-11-04 | 2022-01-28 | 湖南省气象灾害防御技术中心 | Thunder and lightning forecasting method and thunder and lightning forecasting equipment |
| CN115273440A (en) * | 2022-07-23 | 2022-11-01 | 河南泽阳实业有限公司 | Early warning device based on big data intelligent analysis algorithm |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57161576A (en) * | 1981-03-31 | 1982-10-05 | Tech Res & Dev Inst Of Japan Def Agency | Thundercloud detecting system |
| JPS59108980A (en) * | 1982-12-14 | 1984-06-23 | Mitsubishi Electric Corp | Forecast of striking by lightning |
| CN101794273A (en) * | 2010-03-08 | 2010-08-04 | 广东电网公司佛山供电局 | Method and device for analyzing and displaying thunder activity law |
| CN103198157A (en) * | 2013-04-28 | 2013-07-10 | 南京信息工程大学 | Compressed storage and processing method for telluric electricity field data |
| CN103472342A (en) * | 2013-09-25 | 2013-12-25 | 中国气象科学研究院 | Lightning monitoring and early warning method and system |
| CN104614597A (en) * | 2015-01-28 | 2015-05-13 | 南京信息工程大学 | Thunderstorm early-warning method |
| CN106443212A (en) * | 2016-11-02 | 2017-02-22 | 安徽锦坤电子科技有限公司 | Lightning monitoring and early-warning system |
| CN107037269A (en) * | 2017-04-14 | 2017-08-11 | 云南电网有限责任公司电力科学研究院 | A kind of power transmission line lightning shielding method for early warning |
-
2018
- 2018-04-02 CN CN201810283156.3A patent/CN108680798B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57161576A (en) * | 1981-03-31 | 1982-10-05 | Tech Res & Dev Inst Of Japan Def Agency | Thundercloud detecting system |
| JPS59108980A (en) * | 1982-12-14 | 1984-06-23 | Mitsubishi Electric Corp | Forecast of striking by lightning |
| CN101794273A (en) * | 2010-03-08 | 2010-08-04 | 广东电网公司佛山供电局 | Method and device for analyzing and displaying thunder activity law |
| CN103198157A (en) * | 2013-04-28 | 2013-07-10 | 南京信息工程大学 | Compressed storage and processing method for telluric electricity field data |
| CN103472342A (en) * | 2013-09-25 | 2013-12-25 | 中国气象科学研究院 | Lightning monitoring and early warning method and system |
| CN104614597A (en) * | 2015-01-28 | 2015-05-13 | 南京信息工程大学 | Thunderstorm early-warning method |
| CN106443212A (en) * | 2016-11-02 | 2017-02-22 | 安徽锦坤电子科技有限公司 | Lightning monitoring and early-warning system |
| CN107037269A (en) * | 2017-04-14 | 2017-08-11 | 云南电网有限责任公司电力科学研究院 | A kind of power transmission line lightning shielding method for early warning |
Non-Patent Citations (2)
| Title |
|---|
| 电场时序差分在雷电预警中的有效性分析;王强 等;《气象科学》;20091031;第29卷(第5期);第657-663页 * |
| 雷电过程地面电场变化与油库雷电安全报警;黄柳宾 等;《石油学报》;20010531;第22卷(第3期);第91-95页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108680798A (en) | 2018-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108680798B (en) | Lightning monitoring and early warning method and system | |
| CN107037269A (en) | A kind of power transmission line lightning shielding method for early warning | |
| CN105068149B (en) | Multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment | |
| CN103546319B (en) | The alarming flow method and system of the network equipment | |
| CN108243429B (en) | Network coverage detection method and system for indoor distribution system | |
| CN102882895A (en) | Method and device for identifying message attack | |
| CN110954782B (en) | Distribution network instantaneous fault identification method and system based on density peak clustering | |
| CN204269739U (en) | Based on thunderbolt diagnosis and the real time warning device of leakage conductor | |
| CN105279612A (en) | Poisson distribution-based power transmission line tripping risk assessment method | |
| GB2589257A (en) | Method and system for multi-trigger parametric data management and associated transactions | |
| CN106358212A (en) | Detection method and device for indoor distribution system | |
| CN115219810A (en) | Line trip prediction method based on lightning positioning system | |
| CN104655914B (en) | Method and device for detecting interference signals and local discharging signals of GIS equipment | |
| CN106199251B (en) | A kind of distribution network failure early warning system and method based on adaptive modeling analysis | |
| CN117335570B (en) | Visual monitoring system and method for panoramic information of elastic power distribution network | |
| CN102710349A (en) | Data selection-based frequency spectrum sensing method used under pulse interference environment | |
| CN110568321A (en) | Overvoltage deduction prediction method and device based on voltage waveform attenuation | |
| CN102708707B (en) | Self-adaptive adjusting method and device for unit window in controlled airspace | |
| CN113178852B (en) | Insulation matching method, device, equipment and medium for lightning invasion waves of transformer substation | |
| CN108761175B (en) | Ground potential rise detection system and power transmission line lightning stroke condition determination method | |
| CN101923605B (en) | Wind pre-warning method for railway disaster prevention | |
| CN115275946A (en) | Distribution line-oriented lightning trip probability analysis method and system | |
| CN114429240A (en) | Method and device for monitoring running state of highway equipment | |
| CN113567763A (en) | Lightning early warning method and lightning early warning device | |
| EP3695253B1 (en) | Method for warning about lightning activity in wind farms |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |