Some readers might find this six page November 2000 article from the Institute
of Electrical and Electronic Engineers (IEEE) Spectrum magazine
entitled "Shielding grids from solar storms" of interest -
http://thayer.dartmouth.edu/spacesci...molinski00.pdf
Written 11 years after the Quebec event, the authors highlight some of the ways
power grids are susceptible to "geomagnetically induced currents" (GICs) caused
by solar activity and discuss some of the remedial steps power utilities can take.
Best regards
Gary Kopff
Proud member IEEE 33 years