Always the same circuit?
Sounds like uncontrolled X-Y-Z legging.
Crappy power company.
Are you in an REC?
Nope, unfortunately not. It's beyond me how OG&E can have a monopoly on so much of the state, but they do. And they just jacked up everyone's rates -- AGAIN.
Can't help wishing there was a class-action lawsuit. We "little people" are getting screwed in a big way. Not even buying us dinner first!
UPS power supply for 120V works for that. I don’t think the cheapest ones will work for quick out and back, you need a decent one but they at least were not too expensive, couple hundred bucks. Protects electronics (TV, CPU etc). Provides 120V for an extended time during an outage.
Surge protector relays are not expensive and protect 208V equipment like AC units.