Air blast arc-quenching lightning protection inter space device

Abstract

The invention relates to a lightningproof device, in particular to a puffer arc quenching lightningproof clearance device used in varies voltage grades transmission lines. The puffer arc quenching lightningproof clearance device comprises a conductor connection body, an earthing connection body, a gas generation device, a signal acquisition device, a high-voltage electrode, an earthing electrode, etc. The gas generation device is arranged near an electrode gap formed between the high-voltage electrode and the earthing electrode. The signal acquisition device generates signal after the generation of the arc. The gas generation device is started and therefore generates the airflow capable of blowing out the arc. The invention has the following benefit effects: the device features wide application, light weight, convenient transportation, assembly and disassembly, re-use, lower operation cost as well as environment protection; the device is fast in action, which is able to extinguish the arc quickly and enhance the success rate of recloser; the device is capable of decreasing the trip rate of the transmission line, and protect power facilities, thus being good for the power safety production and improving the power grid reliability.

Description

technical field [0001] The invention relates to a lightning protection device, in particular to a gas blowing arc extinguishing lightning protection gap device for power transmission lines of various voltage levels. Background technique [0002] For transmission lines, in order to avoid shock flashover caused by lightning hitting the wires, resulting in damage to the line insulation, the power production department generally installs protective gaps or lightning arresters to protect the lines. When the line is struck by lightning, the protection gap first breaks down due to overvoltage, and a large amount of lightning current leaks into the ground, so that the degree of overvoltage is greatly reduced, thereby protecting the line and electrical equipment. Its disadvantages are: the protection gap has no arc extinguishing ability, and cannot shut off the power frequency continuous current caused by short circuit, and it can cause the circuit breaker to trip for phase-to-phase ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the protection gap has no arc extinguishing ability, and it cannot shut down the power frequency continuous current caused by short circuit, and it can cause the circuit breaker to trip for phase-to-phase short circuit

In severe cases, the arc will ablate the gap electrode and cause the gap to lose its protective insulation function

When an insulator with no installation gap flashes over, if the arc cannot be extinguished, the wire will be burned, causing a disconnection accident and interrupting the power supply; the line arrester is expensive, high in use and maintenance costs, large in leakage current, short in service life, and frequently replaced. Moreover, it is easy to explode under the impact of lightning, which is not conducive to the economical and safe operation of the power grid.

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