Hong Kong Power Outage
- country Special Administrative Region (SAR) of China
- region Hong Kong
- categories Generators tripping
- impacts Load shedding
- start 19 April 2023 at 00:04:00 Asia/Hong_Kong
- end 19 April 2023 at 00:04:00 Asia/Hong_Kong
- duration 48 minutes
- primary cause Human error
- secondary causes No content
- load lost No content
- number of customers affected No content
- end of disturbance criteria No content
why this is interesting
The incident was caused by an “unrecorded spare cable and on-site operation procedures.”
description
Hong Kong Electric indicated that an unrecorded cable was accidentally connected to the power system after switchgear maintenance causing a short circuit. This triggered the automatic protection mechanism in the power supply system to operate and affected electricity supply. The company said that the “spare cable” was not documented in the circuit diagram or the site identification labels, and therefore it was not taken into account.
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