Conductor lightning protection device

Abstract

The invention discloses a conductor lightning protection device which comprises a lightning protection device body and a conductor clamp holder. A first containing hole and a second containing hole are formed in the middle of the conductor clamp holder, a positioning bump is arranged between the first containing hole and the second containing hole, steel pricks are arranged inside the first containing hole and the second containing hole, a conductor penetrates the first containing hole and the second containing hole, a metal block is arranged on one side of the top of the conductor clamp holder, a discharge disk is arranged at the top of the metal block and connected with the metal block in a fastened manner by a screw, and an arc extinguishing cylinder is arranged at the top of the discharge disk. According to the conductor lightning protection device, arc extinguishing time is shortened by the arc extinguishing cylinder, burnout of the conductor is avoided by double voltage divisionof a discharge device and a grounding wire, the lightning protection effect of the device is further improved, the conductor is indirectly protected from long-time direct lightning strike, the conductor lightning protection device is good in durability, low in maintenance cost, high in reliability and long in service life, and a shield is omitted.

Description

technical field [0001] The invention relates to the technical field of electric power protection, in particular to a wire lightning protection device. Background technique [0002] Installing a surge arrester with a series gap on the electric line can effectively discharge the overvoltage and protect the insulator string from the burning of the discharge arc when the line is struck by lightning or the insulator string flashes over. Ordinary surge arresters with series gaps can effectively absorb the overvoltage on the line, break down the air gap, and guide the overvoltage to the ground. However, it does not have the ability to actively extinguish the arc, and cannot automatically extinguish the power-frequency freewheeling arc caused by the breakdown of the air gap. Only when it is used in conjunction with an automatic reclosing device can a better lightning protection effect be obtained. However, due to the need to wait for the circuit breaker to operate, it takes a long ...

AI Technical Summary

Problems solved by technology

However, it does not have the ability to actively extinguish the arc, and cannot automatically extinguish the power frequency freewheeling arc caused by the breakdown of the air gap. Only when it is used in conjunction with the automatic reclosing device can a better lightning protection effect be obtained

However, due to the need to wait for the circuit breaker to operate, it takes a long time to extinguish the arc on the series gap. Every time the overvoltage on the line is released to the ground, it may cause the metal fittings to be burned by the arc, and even burn the wire in severe cases.

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