I found this article on a breakthrough in High Voltage Dc Breakers of interest for expanding power grids
http://www.renewableenergyfocus.com/view/32119/hvdc-breakthrough-heralds-a-new-era-for-renewables/
This could be a huge development, Nigel. Thanks for sharing it.
-Dave
Very interesting !
I wish they would have explained how their new breaker works though.
Thanks Nigel !
boB