A voltage change on the consumer side means increased current through a resistance somewhere in the line… Something undersized or overloaded, or a bad connection, for that kind of voltage drop.
Still, that should not change the AC frequency of the grid significantly in this case… You’re never going to have a different frequency than the power plants. They’re all sync’d and the entire grid would go down if the frequency changes too much.
A voltage change on the consumer side means increased current through a resistance somewhere in the line… Something undersized or overloaded, or a bad connection, for that kind of voltage drop.
Still, that should not change the AC frequency of the grid significantly in this case… You’re never going to have a different frequency than the power plants. They’re all sync’d and the entire grid would go down if the frequency changes too much.