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Risk and Vulnerability Assessment Analysis in Distribution Networks. Workshop Thursday, 3 June 2010 Hungarian Energy Office Peter Albertsson, Sweden. Continuity of supply I. 1930s Locally produced Intermittent supply Light Radios No problem with long interruptions.
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Workshop Thursday, 3 June 2010Hungarian Energy Office
Peter Albertsson, Sweden
No problem with long interruptions
Frequent hour-long interruptions
Saturday January 8 2005
> 0 C
> 43 m/s winds hit the coast
> 30 m/s over land
730,000 powerless by midnight
380,000 after one day
230,000 after three days
130,000 after one week
60,000 after three weeks
Getting rid of fallen trees
Temporarily repairing the lines
5000 men from Sweden, another 300 electricians from neighboring countries
DSOs knew what to do – but had not enough men!
60,000 powerless after three weeks
Power back to all except some summer houses after forty days
Restore grids permanently: cables instead of overhead lines (still going on)
Amendments to the Law
And from 1 January 2011:
Systematic search for grid
Risk analysis of technological
IEC 60300-3-9 (1995)
A little more general
Of less specific use for us
I would still recommend
The combination of the
frequency, or probability of
occurrence and the
consequence of a specified
- Weather (wind, snow, thunderstorms)
- Failing equipment (ageing)
- Construction (digging)
Note the difference between risk and
perceived risk in upper right corner!
The owner of the substation is not the
company who is dependent of it and did
this risk assessment.Swedish specific Risk matrix
Distribution, Transmission < 220 kV
Introduction and definitions
Analysis: what to do and achieve,
suggested methods from standards,
how to visualize (e.g. risk matrix),
advise on documentation.
Action plans (scheduled)
Vulnerability based criteria:
DSO’s annual report
Which method for the risk analysis (with source)?
Which way to visualize, assess and rank risks?
How many risks (in four groups) – identified and to action plan?
Circumstances giving problems to “no outages longer than 24 h”?
How many actions shall be taken?
Are the actions on time?
Managing physical assets to maintain or reinvest right
ISO 14000 for environment
ISO 9000 for quality
Network companies are certified by 3rd party
BSI has invited
40 delegates plan to come
End of April cancelled (ash)
15 – 18 June, London
Beginning of preliminary work
Tack för uppmärksamheten
Hungarian views courtesy Erik Blomqvist