Power system operational resilience – What it means and where we stand?
- Feb 2, 2021 10:17 pm GMT
Power system operational resilience
In power system operations, resilience generally means the ability to respond quickly and to recover from a disruption. The term resilience is applied when such systems are confronted with high impact, low-frequency (HILF) events, which includes extreme natural disasters with increased frequency in recent years, as well as artificial threats such as cyber or physical attacks.
CIGRE WG C2.25 performed a survey addressed to global operational workforce to assess and find the existing knowledge and status of system operational resilience in the power system community around the world.
The conducted survey showed more than 90% of the respondents have indicated that their electricity infrastructure faces HILF events. Responses summed up and ranged by the number of occurrences showed that events caused by weather related events (hurricanes, cyclones, earthquakes, ice storms) were main conditions and have the highest incidence. Environmental events range between country to country and some specific events are more critical for some utilities compared to others. Cyberattacks and wildfires (both nearly 50%) are the two most considered and anticipated HILF events by system operators.
CIGRE W.G.2.25 identified that to best prepare operational resilience strategies some of the resilience strategies focus on specific events and how to best handle their occurrence, while the rest concentrate on the consequences of a specific events.
CSE018-June 2020 has included a valuable paper entitled ‘ Power system operational resilience – What it means and where we stand ‘.The aim of this companion paper is to give a first glance at the topic or system operational resilience and the finding of W.G. C2.25 under Study Committee C2.
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