Lightning autonomous monitoring and active defense system and method

Abstract

The invention discloses a lightning autonomous monitoring and active defense system and method, and the system comprises a current sensor which is installed on a metal object which is liable to form an uplink connection pilot and is liable to monitor a pulse current formed by the uplink connection pilot, and is used for monitoring a current pulse signal generated by the uplink connection pilot; anantenna which is arranged near the current sensor and is used for monitoring a field pulse signal generated by the downlink cascade pilot; a signal processing and early warning module (MSPW) which isused for detecting the received current and field pulse signals and sending an early warning signal when detecting that downlink cascade pilot and uplink pilot pulses are started and developed, wherein the early warning signal is sent to a controlled surge protection device (CSPD) and / or a polarization reconfigurable lightning protection antenna, and the CSPD completes the switching action beforethe first return stroke and / or the lightning protection antenna becomes to only receive / transmit horizontally polarized electromagnetic waves. According to the invention, lightning stroke defense canbe realized before first return stroke, the cost is low, and the system is simple and reliable.

Description

technical field [0001] The invention belongs to the technical field of lightning protection, and more specifically relates to a lightning protection system and method with early warning equipment and related protection devices. Background technique [0002] Lightning is an atmospheric discharge phenomenon that occurs during thunderstorms. In nature, about 2 / 3 of lightning occurs in thunderstorm clouds, referred to as cloud flashes, and about 1 / 3 of lightning develops from clouds to the ground and hits the ground. Objects, referred to as ground flashes. figure 1 is a schematic diagram of a typical ground-to-ground lightning process. like figure 1 As shown in , the process of ground lightning hitting ground objects generally includes the following process: the descending step leader (negative) originates in the cloud and continues to develop and extend downward; the descending step leader approaches the ground and initiates upward movement on the tip of the ground object Co...

AI Technical Summary

Problems solved by technology

Therefore, the traditional lightning protection system is designed as multi-level protection, and the protection feature is to deal with unpredictable lightning strikes with a constant fixed design, which makes it inevitable that protection failures and accidents will occur in some cases

[0005] Although lightning warning equipment (such as publication number CN105244862A) and related protection devices (such as publication numbers CN107565538A and CN107834199A) have been developed for lightning protection in recent years, in order to effectively protect against lightning through relevant protection devices before possible return strikes, However, because some of the relevant protection devices cannot complete the switching action before the first return strike, so as to provide timely and comprehensive protection, and some require additional special design of related switches with complex structures and expensive prices, so the reliability of these lightning warning protection devices is not high.

Images