What question did this study set out to answer?

This research aims to evaluate overvoltage characteristics in gas-insulated switchgears due to multiple direct lightning strokes.

Characteristics of Overvoltages in 500 kV Gas‐Insulated Switchgears Caused by Multiple Direct Lightning Strokes

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Evaluates lightning surge risks in gas-insulated switchgears, suggesting the need for protective measures against direct lightning strikes.

This research aims to evaluate overvoltage characteristics in gas-insulated switchgears due to multiple direct lightning strokes.
Conducted lightning surge analysis for a 500-kV gas-insulated switchgear (GIS)
Analyzed electrical breakdown events in gas circuit breakers (GCBs)
Investigated protective measures like installing surge arresters
Identified overvoltage risks due to direct lightning strokes on GISs
Confirmed electrical breakdown occurrences between contacts of GIS equipment
Emphasized the importance of additional protective measures like surge arresters

Yamamoto et al. (2026) studied this question.

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Evaluates lightning surge risks in gas-insulated switchgears, suggesting the need for protective measures against direct lightning strikes.