The only reason i would ever fold aces preflop is at the final table with really specific requirements.
- At the final table when I'm substantially behind in blinds (less than 2 big blinds) and everyone else at the table has very similar, and relatively large stacks. Enough people at the table have to go all in to warrant a fold. For example: final seven, at least four other people would have to be all in or be forced to call all in for me to fold. therefore, I'd be expect to get third place. This is better than having a favorable chance to quintuple (5x) my stack because of the fact that when I lose (I'm assuming about 40 or 50% of the time given the fact it would be a 5 way pot) I place 7th in the tourney. And, when I don't, I'd be placed 3rd or 4th of four players remaining which isn't much better than a near guaranteed forth place.
In any other situation, I cannot fathom the idea of folding aces preflop. They are simply too good to fold. Run pocket aces through a preflop odds calculator, they are never going to be -EV to go all in with preflop.
Here's CardChat's odd calculator if you want to test it yourself. (It doesn't calculate equity; you'd have to do that yourself on another website)
https://www.cardschat.com/poker-odds-calculator.php