CN-121431965-B - Intelligent lightning interceptor suitable for communication base station and lightning stroke sensing method

CN121431965BCN 121431965 BCN121431965 BCN 121431965BCN-121431965-B

Abstract

The invention relates to the technical field of lightning stroke sensing, in particular to an intelligent lightning interceptor suitable for a communication base station and a lightning stroke sensing method, comprising the steps of acquiring a current electromagnetic pulse signal captured at each target node in a target communication base station, and acquiring the vertical electric field intensity of each target node in the target communication base station in a current monitoring period; determining the current electric field accumulation degree, determining the current signal source position according to the current electromagnetic pulse signals captured at different target nodes if the current electric field accumulation degree is larger than a preset lightning threshold value, determining the current position reliability and the current lightning stroke possible index, and judging whether lightning stroke activity occurs currently according to the current lightning stroke possible index so as to realize lightning stroke sensing. The invention comprehensively analyzes the current electromagnetic pulse signal and the vertical electric field intensity, combines the interference condition of the near-field interference source, and realizes the lightning stroke sensing, thereby improving the accuracy of the lightning stroke sensing.

Inventors

SHAO LIZHONG
LIU YOUYOU

Assignees

山东驱雷科技发展有限公司

Dates

Publication Date: 20260508
Application Date: 20251031

Claims (10)

1. A lightning strike sensing method suitable for a communication base station, comprising the steps of: Acquiring a current electromagnetic pulse signal captured at each target node in a target communication base station, and acquiring the vertical electric field intensity of each target node in the target communication base station in a current monitoring period; determining the current electric field accumulation degree according to the change condition of the rising trend between the vertical electric field intensities of each target node in the current monitoring period; If the current electric field accumulation degree is larger than a preset lightning threshold value, determining the current signal source position according to current electromagnetic pulse signals captured at different target nodes; determining the reliability of the current position according to the amplitude change condition between the current electromagnetic pulse signals at all target nodes and the distance change condition between all target nodes and the current signal source position; determining a current lightning stroke possible index according to the distance between each near-field interference source and the current signal source position in the target communication base station and the current position reliability; And judging whether lightning stroke activities can occur currently according to the current lightning stroke possible indexes, so that lightning stroke sensing is realized.
2. A lightning strike sensing method for a communication base station according to claim 1, further comprising: determining any lightning stroke activity perceived by the target communication base station as target lightning stroke activity; Acquiring a voltage actual measurement value when the target lightning stroke activity occurs, and determining a theoretical induced voltage when the target lightning stroke activity occurs through a Rusck formula; if the voltage measured value and the theoretical induced voltage when the target lightning stroke activity occurs belong to a preset middle-low voltage interval, judging that the target lightning stroke activity is middle-low voltage lightning activity; if the target lightning stroke activity is middle-low voltage lightning stroke activity, normalizing the ratio between the theoretical induced voltage and the voltage measured value when the target lightning stroke activity occurs to obtain the protection index degree when the target lightning stroke activity occurs; if the protection index degree of the target lightning stroke activity is larger than a preset protection threshold value, judging that the target lightning stroke activity is a medium-low voltage induction protection successful activity; And if the protection index degree of the target lightning stroke activity is smaller than or equal to a preset protection threshold value, judging that the target lightning stroke activity is a medium-low voltage induction protection failure activity.
3. A lightning strike sensing method for a communication base station according to claim 2, further comprising: and constructing a medium-low voltage lightning activity sensing network according to the electromagnetic pulse signals corresponding to all the medium-low voltage induction protection successful activities and the electromagnetic pulse signals corresponding to all the medium-low voltage induction protection failure activities.
4. The lightning sensing method according to claim 1, wherein the determining the current electric field accumulation degree according to the upward trend change between the vertical electric field intensities of the respective target nodes in the current monitoring period comprises: all the vertical electric field intensities of each target node in the current monitoring period form a vertical electric field intensity sequence corresponding to each target node; Determining the increment between every two adjacent vertical electric field intensities in the vertical electric field intensity sequences corresponding to each target node as a target increment to form a target increment sequence corresponding to each target node; normalizing the accumulated values of all target increments in the target increment sequence corresponding to each target node to obtain the ascending trend corresponding to each target node; And determining the maximum value in the rising trend degrees corresponding to all the target nodes as the current electric field accumulation degree.
5. A lightning stroke sensing method for a communication base station as claimed in claim 1 wherein said determining the current signal source location from the current electromagnetic pulse signals captured at the different target nodes comprises: According to pulse signal waveform data corresponding to the current electromagnetic pulse signals captured at every two target nodes, determining pulse time difference between every two target nodes by a cross-correlation analysis method; and determining the current signal source position through a TDOA algorithm according to pulse time differences among different target nodes.
6. A lightning sensing method applicable to a communication base station according to claim 1, wherein determining the reliability of the current location according to the amplitude variation between the current electromagnetic pulse signals at all the target nodes and the distance variation between all the target nodes and the current signal source location comprises: determining the Euclidean distance between each target node and the current signal source position as the target distance corresponding to each target node; Sequencing all target nodes according to the sequence from big to small according to the target distances corresponding to all target nodes to obtain a target node sequence; the target distances corresponding to all the target nodes in the target node sequence are formed into a target distance sequence; The peak amplitude of the current electromagnetic pulse signals at all target nodes in the target node sequence is formed into a peak amplitude sequence; determining a pearson correlation coefficient between the target distance sequence and the peak amplitude sequence as a target correlation coefficient; and normalizing the difference value between the constant 1 and the target correlation coefficient to obtain the reliability of the current position.
7. The lightning stroke sensing method for a communication base station according to claim 1, wherein said determining the current lightning stroke potential indicator according to the distance between each near field interference source and the current signal source position in the target communication base station and the current position reliability comprises: Determining the Euclidean distance between each near field interference source and the current signal source position as a position difference initial evaluation value corresponding to each near field interference source; determining the difference between the constant 1 and the reliability of the current position as a current adjustment coefficient; according to the current adjustment coefficient, adjusting the initial evaluation value of the position difference corresponding to each near-field interference source to obtain the comprehensive evaluation value of the position difference corresponding to each near-field interference source; And determining the minimum value in the position difference comprehensive evaluation values corresponding to all the near-field interference sources as a possible index of the current lightning stroke.
8. The lightning sensing method for the communication base station according to claim 7, wherein the adjusting the initial evaluation value of the position difference corresponding to each near-field interference source according to the current adjustment coefficient to obtain the comprehensive evaluation value of the position difference corresponding to each near-field interference source comprises: determining the sum value between the constant 1 and the current adjustment coefficient as a current correction coefficient; And normalizing the product between the current correction coefficient and the initial evaluation value of the position difference corresponding to each near-field interference source to obtain the comprehensive evaluation value of the position difference corresponding to each near-field interference source.
9. The lightning stroke sensing method for a communication base station according to claim 1, wherein said determining whether lightning stroke activity is currently occurring according to a current lightning stroke possible indicator comprises: If the current lightning stroke possible index is smaller than or equal to a preset possible threshold value, judging that the current lightning stroke is near-field interference and lightning stroke activity cannot occur; And if the current lightning stroke possible index is larger than a preset possible threshold value, judging that the lightning stroke activity occurs currently.
10. An intelligent lightning interceptor suitable for use with a communication base station, comprising a processor and a memory, the processor being configured to process instructions stored in the memory to implement a lightning strike sensing method suitable for use with a communication base station as claimed in any one of claims 1-9.

Description

Intelligent lightning interceptor suitable for communication base station and lightning stroke sensing method Technical Field The invention relates to the technical field of lightning stroke sensing, in particular to an intelligent lightning interceptor and a lightning stroke sensing method suitable for a communication base station. Background Along with the increasing construction of communication base stations, the threat of lightning strike to communication equipment is more and more emphasized, and the direct strike of lightning strike to the base stations may not only cause equipment damage, but also cause interruption of data transmission, thereby affecting the normal operation of communication services. Accordingly, lightning protection technology is becoming more and more important in the field of communications. The traditional lightning protection devices mainly comprise a traditional lightning rod and a traditional lightning arrester, but the lightning protection devices cannot effectively sense the impending danger of lightning, and are often only used for protection when the lightning occurs. Therefore, in order to improve the lightning protection capability of the communication base station, the intelligent lightning interceptor is generated, so that lightning can be sensed, monitored and intercepted in real time through lightning strike, and the influence of the lightning strike on the base station is reduced. Meanwhile, with the development of artificial intelligence and the Internet of things technology, the lightning protection of the base station is gradually changed from passive response to active perception and intelligent protection. At present, when lightning stroke sensing is carried out, the lightning stroke sensing is realized by adopting an electric field sensing method or a lightning sensor method. However, the electric field sensing method and the lightning sensor method often rely on a single physical parameter to perform analysis, and are often subject to interference in a high-density electromagnetic environment, for example, may be affected by near-field interference sources such as a distribution box and power equipment in a communication base station, so as to cause false alarm or missing alarm, thereby causing poor accuracy of lightning stroke sensing. Disclosure of Invention In order to solve the technical problem of poor accuracy of lightning stroke sensing, the invention provides an intelligent lightning interceptor and a lightning stroke sensing method suitable for a communication base station. In a first aspect, the present invention provides a lightning strike sensing method suitable for a communication base station, the method comprising: Acquiring a current electromagnetic pulse signal captured at each target node in a target communication base station, and acquiring the vertical electric field intensity of each target node in the target communication base station in a current monitoring period; determining the current electric field accumulation degree according to the change condition of the rising trend between the vertical electric field intensities of each target node in the current monitoring period; If the current electric field accumulation degree is larger than a preset lightning threshold value, determining the current signal source position according to current electromagnetic pulse signals captured at different target nodes; determining the reliability of the current position according to the amplitude change condition between the current electromagnetic pulse signals at all target nodes and the distance change condition between all target nodes and the current signal source position; determining a current lightning stroke possible index according to the distance between each near-field interference source and the current signal source position in the target communication base station and the current position reliability; And judging whether lightning stroke activities can occur currently according to the current lightning stroke possible indexes, so that lightning stroke sensing is realized. With reference to the first aspect, in a possible implementation manner, the method further includes: determining any lightning stroke activity perceived by the target communication base station as target lightning stroke activity; Acquiring a voltage actual measurement value when the target lightning stroke activity occurs, and determining a theoretical induced voltage when the target lightning stroke activity occurs through a Rusck formula; if the voltage measured value and the theoretical induced voltage when the target lightning stroke activity occurs belong to a preset middle-low voltage interval, judging that the target lightning stroke activity is middle-low voltage lightning activity; if the target lightning stroke activity is middle-low voltage lightning stroke activity, normalizing the ratio between the theoretical induced voltage and the voltage measure