Jaybird1980
Grandmaster
It is unusual. The interconnects are there for stability, restart and controlling/managing failures and outages. Not so that they can run the ragged edge. This is a new trend that has been getting worse over the last 3-5 years.That’s not unusual, the interconnects are there for a reason. What is unusual is multiple regions suffering a shortage at the same time.
I work in the industry, from what I’ve seen the plans for rolling blackout must be on the transmission level, so substation breakers will be flipped to simply shut down distribution lines.
Problem becomes cold load pickup, the longer you leave a line de energized the more load you can expect to pickup. This is why leaving lines de energized for more than an hour or so becomes problematic.