Early Streamer Emission Terminal Lightning Protection
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Solution Overview
Problem
Conventional lightning discharge control systems fail to prevent lightning strikes effectively as they attract lightning to facilities due to charge dissipation issues, leading to insufficient electrical energy for controlling the path of lightning.
Innovation Solution
An early streamer emission terminal is designed to generate an upward propagating streamer earlier than traditional systems by accumulating ground charges and releasing positive charges to form an upward streamer microseconds before a lightning strike, using charge plates and electrodes connected to a central shaft with insulator seals to control the discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lightning rods are used to create ground charge, then lightning attraction is achieved, but the system fails to control the lightning path effectively due to charge dissipation
Solution Approach 1:
The system performs preliminary charge accumulation in isolated charge plates during the initial phase of thunderstorm development, before the downward step leader reaches the ground. This preliminary action stores electrical energy that can be rapidly discharged to create an upward streamer that intercepts the downward leader, thereby controlling the lightning path while preventing energy loss through premature dissipation.
Solution Approach 2:
The lightning protection system is segmented into multiple independent charge plates separated by insulator seals, each capable of accumulating charge independently. This segmentation allows the system to store larger total charge while maintaining the ability to control discharge timing, resolving the contradiction between achieving sufficient ground charge for lightning attraction and preventing energy dissipation before needed for streamer initiation.
2Speed
If charge plates accumulate atmospheric charge, then upward streamer generation is enabled, but charge discharge timing must be precisely controlled
Solution Approach 1:
The system incorporates detection mechanisms that monitor the development of downward step leaders and provide feedback to control the discharge timing of charge plates. This feedback mechanism ensures that the upward streamer is generated at the precise moment when it can effectively intercept the downward leader, maximizing streamer propagation speed while minimizing timing errors that would result in failed interception.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The early streamer emission terminal effectively directs lightning strikes by creating a quickly moving upward streamer, increasing the protection area and reducing the risk of strikes to sensitive locations.
Implementation Method 1
During this process, ion formation begins at the lightning rod
Implementation Method 2
atmospheric charge accumulates in the charge plates, and a ground charge accumulates in the shaft
Implementation Method 3
streamers begin to form, effectively causing the lightning rods to attract lightning strikes
Implementation Method 4
an arc between the electrodes and the central shaft occurs. When the discharge occurs, the emission terminal generates a quickly moving upward streamer
Implementation Method 5
charge plates separated by insulator seals such that each of the charge plates operates independently
Implementation Method 6
the ambient electric field intensity around a grounded lightning protection system induces current into the grounded lightning protection system
Data Source
AI summary
An early streamer emission terminal is disclosed. According to some embodiments, the early streamer emission terminal can create an upward propagating streamer earlier than conventional lightning protection systems and/or devices. In particular, the early streamer emission terminal can collect ground charges during an initial phase of thunderstorm development. When a thunderstorm begins to generate downward step leaders, the ambient electric field around a grounded lightning protection system can induce a current into the grounded lightning protection system. The induced current can include a flow of negative charge toward the ground, while a positive charge can be released to form an upward streamer. The construction of the early streamer emission terminal can trigger the flow of positive upward charge microseconds earlier than traditional lightning rods or other similar devices.