How would an entire substation assume a 190/109 voltage throughout town? I mean for 3-4 days here. Compressors are poppin fuses, UPS's are quacking, flour. lights are flickering longer on start ups....

Is the electric generated locally?

Obviously the substation has a higher voltage which is stepped down at every transformer. I can't think of anyway to make the low number anything but half of the high number... e.g., 218/109.

We buy a good chunk from Quebec power, but some comes from the Yankee nuke plant south of me ( 40 miles).

After running around entertaining various complaints the utility crew met me at the general store where i had explained my findings. As the affected area included more than a single X-former bank the crew leaders looked at each other and simultainously exclaimed " the substaion!" and off they went....

I have not noted any mushroom clouds to the south as yet

As of yet they haven't lowered the voltage here in CA as part of "The Great Hoodwink". I think the situation out here should be called "Y2K#2".$$$$$$$

Update;
the substaions here have regulators for peak usage. They are basically X-former taps that activate automatically or manually.
The voltage reduction is mandated by the "new York & Mass something something" orginization. Basically a sudo-political consortium of said 'hoodwinkers' out here on the east coast.

The best part is that I jokingly told the Chief of police in town that someone must be stealing power.

Now that I've publicly ( the Genny store rates high around here) ratted out the utility, some individuals and Biz's are confronting them.

I fear for the co. kneecapper....