On the heels of our recent discission about powerline interference on AM reception comes a very different AM/Powerline problem..
‘Induced Atmospheric Vibration’ Cause Blackouts in Europe
"...Wind can also cause transmission lines to vibrate. These vibrations are characterised by either high amplitude and low frequency (known as “conductor galloping”), or low amplitude and high frequency (known as “aeolian vibrations”).
These vibrations are a significant problem for grid operators. They can place increased stress on grid infrastructure, potentially leading to blackouts.
To reduce the risk of vibration, grid operators often use wire stabilisers known as “stock bridge dampers.
Vibrations in power lines can also be caused by extreme changes in temperature or air pressure. And this is one hypothesis about what caused the recent widespread blackout across the Iberian peninsula...."
Um, sure. The only place I've seen dumber decisions made about a grid, and first hand, is Cuba or Puerto Rico.