Which risk increases when a substation transformer's load unexpectedly surges?

💡 Explanation

Increased corona discharge events happen because surge currents boost the local electric fields beyond inherent breakdown tolerances, enabling ionization of surrounding air, therefore leading to partial discharges rather than suppressed currents or core material changes.

• Which mechanism weakens molecular binding in heated polymers?
• Which consequence results when a pharmaceutical protein drug's manufacturing process fails to promote correct disulfide bonds?
• Which consequence results when a hydrogen storage tank develops micro-cracks?
• Which outcome results when iron is insufficiently available in catalytic converters?
• Which outcome occurs during uranium enrichment within centrifuges?
• Which outcome results when an operational amplifier driving a piezoelectric actuator receives frequencies exceeding its slew rate limit?