Spark gap protection device

Abstract

The invention discloses a spark gap protection device which comprises a spark gap protection unit and a box. The spark gap protection unit is arranged inside the box and comprises a spark plug, a low-voltage electrode, a high-voltage electrode, an insulation board, a nut, an adjusting bolt, an insulator and a trigger box. The low-voltage electrode is arranged on the insulation board. The spark plug is fixed to the low-voltage electrode through the insulation board. The high-voltage electrode is fixed into the box through the nut and the adjusting bolt. The low-voltage electrode and the high-voltage electrode are located at the same horizontal position, and a gap is reserved between the high-voltage electrode and the low-voltage electrode. Accordingly, dust is not likely to be accumulated on the electrodes, and discharging safety and reliability between the high-voltage electrode and the low-voltage electrode are ensured. The phenomenon that due to the fact that two electrodes of a traditional protection device are perpendicularly placed, dust is accumulated on an electrode at the lower end, a gap between a high-voltage electrode and a low-voltage electrode becomes smaller, and then spark gap triggering discharging safety is affected is avoided.

Description

technical field [0001] The invention belongs to the technical field of relay protection, in particular to a spark gap protection device. Background technique [0002] In recent decades, my country's electric power industry has developed rapidly, and now my country's power grid has entered a new stage of high-voltage AC transmission. The stability problem of long-distance and large-capacity power transmission is becoming more and more prominent. The compensation technology of series capacitor banks is widely used in the world, that is, capacitor banks are connected in series. At this time, it is necessary to protect the overvoltage that the capacitors may suffer to ensure When a dangerous voltage is about to appear in the capacitor, the series capacitor bank can be bypassed in time. There are many methods for this kind of overvoltage protection, among which spark gap protection is one of the main methods of overvoltage protection. [0003] At present, the spark gap protectio...

AI Technical Summary

Problems solved by technology

[0003] At present, the spark gap protection device mostly adopts the trigger mode of high and low voltage electrodes placed vertically, so that the electrodes are easy to accumulate dust, which changes the distance of the trigger gap between the two electrodes, and cannot guarantee the reliability and safety of the trigger discharge in the sealed gap

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