A triggered spark gap

Abstract

The invention discloses a triggering type spark gap device including air gaps G1 and G2, capacitor banks C1 and C2, a switch TG, a transformer T, a trigger circuit TC, and a switch K, the air gaps G1 and G2 are serially connected, the capacitor bank C1 is in parallel connection with the air gap G1, the capacitor bank C2 is in parallel connection with the air gap G2, the switch TG is connected in series with the high voltage winding of the transformer T and then is connected in parallel with the air gap G1, the switch K is connected to the low voltage winding of the transformer T, and the on / off state of the switch K is controlled by the trigger circuit TC, the low-voltage winding of the transformer T is connected to the lowest-order or multi-stage capacitor of the serially connected capacitor banks through the switch K, and when the switch K is closed, the winding connection manner of the transformer T enables the high voltage winding to output voltage with opposite polarity with the low voltage winding. The triggering of the spark gap is simple in integral structure, high in reliability and practicability, requires fewer triggering systems, and has high engineering application value.

Description

technical field [0001] The present invention relates to the technical field of electric equipment, and more specifically, relates to a triggered spark gap. Background technique [0002] The spark gap is the key protection device in series compensation. When the voltage of the capacitor bank is too high due to a line fault and the energy absorption capacity of the voltage limiter exceeds the protection setting value, the spark gap can quickly bypass to protect the capacitor bank and voltage limiter connected in parallel. The spark gap generally consists of two gaps in series to form a gap system. When the spark gap action is required to bypass the series compensation capacitor bank, the series compensation control and protection system sends a trigger command to the gap trigger control box through the optical fiber, and the gap trigger control box then sends the gap system. A trigger signal is issued which eventually discharges the spark gap, causing the spark gap to bypass ...

AI Technical Summary

Problems solved by technology

However, because the trigger principle of the gap uses a sealed gap in which the high and low voltage electrodes are ignited simultaneously, the entire trigger system has many components and is relatively complicated.

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