5
votes
3answers
863 views

How does DC transmission require several times less wire than AC?

In this YouTube video (scrolled to 5:55) there's a claim that replacing an AC high voltage transmission line with a high voltage DC transmission line allows for having seven times fewer powerlines ...
1
vote
1answer
117 views

Transients and shielding in power transmission/distribution lines?

I've been lurking for some time on the board here - but hadn't had occasion to ask a question until now: Does anyone have experience with power distribution networks and their impacts on sensitive ...
10
votes
4answers
810 views

Why does electric arc in a switch prefer a curved path over a straight path?

Recently I found this video of a 500 kilovolts line being opened under load. When the switch contacts are pulled apart an electric arc predictably starts. While the contacts are close to each other ...