Analysis and prevention inquiry on break of 10kV aerial insulated wire caused by lightning stroke

摘要

The method to prevent 10kV aerial insulated wire from breaking caused by lightning stroke is put forward according to the mechanism of the break of 10kV aerial insulated wire caused by lightning stroke and the motion rules of power frequency arc via the probability calculation and analysis of lightning stroke flashover It is verified through test that the phenomenon of the lightning stroke discharge can occur between the gap of high voltage electrode and low voltage electrode of the special arc protection device. It is also able to effectively lead the arc root of power frequency arc after lightning flashover, protecting the insulated wire from being burnt and broken and making it able to withstand above five times of large current arc burning of power frequency to achieve the expected effect.