Power plants also need energy to start up (black start), and if there’s no grid energy to power those ancillary systems, or if the power plant doesn’t have on-site auxiliary generators to provide black start capability, they’re down until they can get power again from elsewhere.
This is huge, we have massive drills to make sure we can do this, and idle black start plants for just this purpose alongside almost an entire secondary grid for bootstrapping.
Electricity is expensive and hard as hell.
It trips me out that many of these plants don’t have APUs for starting themselves up, or that they were designed in such a way that they require utility power to boot up. Like I understand that black starts could have problems with frequency sync with no point of reference, but I can’t imagine that their control system circuits don’t have any form of self-powering redundancy built in to their design. Is there any reason for this?
We didn’t have digital controls when they were designed, so you couldn’t use GPS or atomic clocks to synchronize frequencies, you just needed to have a single source of coordination. Those coils were manually controlled till not long ago.
Now we should be able to use some kind of small gas turbine with a igbt rig for synchronization, much like they do with wind turbines.
People often don’t appreciate how far we’ve come over the past 2 decades, and how utterly manual and brute force we were until very, very recently.
It’s why “smart grids” are talked about a lot recently, even though it doesn’t mean much for the layperson. But for the people actually working in the industry, it matters a lot and can be a huge benefit
Ah makes sense, I forget how old a lot of that infrastructure is. I do a lot of work for our local ski resort, they have a 12mw generation plant for their snowmaking system that can backfeed the utility if needed, and they’re sync setup was basically two blinking lights that you had to visually time just right to close the switch and pray you didn’t screw up lol.
