What question did this study set out to answer?

To determine whether imminent electrical breakdown in long air gaps can be predicted early enough to divert the voltage surge via a bypass gap.

January 21, 1974Journal of Physics D Applied PhysicsOpen Access

Anticipation of electrical breakdown of long air gaps

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Authors

GJG Jervis-HunterCentral Electricity Generating Board BTB.A. TozerLaser 2000 (United Kingdom)

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Implication

Experimental study demonstrates early prediction of electrical breakdown in point-plane gaps, indicating surges can be reliably diverted before sparking occurs.

Key Points

To determine whether imminent electrical breakdown in long air gaps can be predicted early enough to divert the voltage surge via a bypass gap.
Subjected a long point-plane air gap to positive voltage surges with a risetime of 150 μs.
Monitored the electrical charge injected into the gap during the initial breakdown corona phase.
Used a triggered bypass sphere gap to divert the voltage surge prior to total spark formation.
Imminent breakdown was detected approximately 7 μs before full gap failure by measuring injected corona charge.
Triggering the bypass gap 3 μs prior to expected breakdown successfully arrested the developing spark.
The critical charge criterion selectively identified and diverted only the surges that would have caused gap failure.

Cite This Study

Jervis-Hunter et al. (1974) studied this question.

synapsesocial.com/papers/6a904eae4aebf474cb34199f https://doi.org/10.1088/0022-3727/7/2/326

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Implication

Experimental study demonstrates early prediction of electrical breakdown in point-plane gaps, indicating surges can be reliably diverted before sparking occurs.

Anticipation of electrical breakdown of long air gaps

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Implication

Key Points

Cite This Study

Anticipation of electrical breakdown of long air gaps

Discussion

Member takes

Implication

Key Points

Cite This Study

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