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Technology Stocks : Year 2000 (Y2K) Embedded Systems & Infrastructure Problem

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To: John Mansfield who wrote (379)5/16/1998 5:39:00 PM
From: John Mansfield  Read Replies (2) of 618
 
[UTILITIES] 'Extensive blackouts are the nightmare of the power industry

'SPACE PHYSICS

Geomagnetic Storms Can Threaten Electric Power Grid

Earth in Space, Vol. 9, No. 7, March 1997, pp.9-11 .c 1997 American Geophysical Union. Permission is
hereby granted to journalists to use this material so long as credit is given, and to teachers to use this material in
classrooms.
...

Extensive blackouts are the nightmare of the power industry. Once power is interrupted in large metropolitan areas, diversity of electric use on the network is lost. When power is restored, all thermostatically controlled electricloads come back on simultaneously. This stress, added to the higher demands of many devices such as motors and transformers, can draw up to 600% of normal load during restoration procedures.

Such a blackout is also likely to cause transient voltage stresses and permanent damage to network equipment such as high-voltage breakers, transformers, and generation plants, which makes them unavailable for restoring power. Hours or days may pass before power can be restored. Oak Ridge National Laboratory assessed the
potential impact of a widespread blackout in the northeastern United States from a geomagnetic storm event slightly more severe than the March 1989 blackout as a $3-6 billion loss in gross domestic product. This figure does not account for the potential disruption of critical services such as transportation, fire protection, and public security.
Other assessments placed the 1989 and 1991 geomagnetic storm effects in a category equivalent to Hurricane Hugo and the San Francisco earthquake in their relative impact on the reliability of the electric power grid.
...

agu.org
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