3 ms·
Hmm. Makes me wonder. If generators really are just a giant blob of metal and very simple (and I have no reason to disbelieve the GP comment)... well... it cou
by exikyut 9y ago
Hmm. Makes me wonder.
If generators really are just a giant blob of metal and very simple (and I have no reason to disbelieve the GP comment)... well... it could be kind of interesting to build an open source software stack to handle switchover. Because, disclaimers notwithstanding, the code would ostensibly be super simple too. So even if it couldn't officially be used directly, it would certainly provide a good base for engineers to copy-paste, either literally or ideologically (and then thoroughly verify, of course!).
Okay... thinking about it, I'm probably wrong - either generator control has some fundamental intricacies that make it not-completely-simple, or all sites have edge cases that have to be baked into the firmware by a system integrator/electrical engineer.
I say this because I'm (genuinely) trying to figure out why the PLCs failed - both in OVH's case, and in AWS's case (see elsewhere in this thread, https://news.ycombinator.com/item?id=15676189 https://news.ycombinator.com/item?id=15676189).
It's obvious there are crazy but legit reasons for this kind of thing to happen. I'm very curious what the complexity scale here is.
- jotm 9y agoThe actual diesel engines and generators are simple metal. Not the switching circuits. If the electric controllers can't handle the load/switching speed/whatever, no clever software and/or reliability in the actual generators will help.
- exikyut 9y agoAh. I've seen what switching 20kV looks like in videos - yeah, that kind of thing requires very careful design, and is invariably going to come entangled with a PLC-style controller, as is the norm for industrial equipment.