Especially when said power trip comes from a boss or other higher up role at work.
Bullying behavior to display power often comes from feelings of inadequacy. Usually feeling that they'll not be well accepted by others. To me that sounds like impostor syndrome albeit a more destructive way of expressing it. Said person feeling inadequate at their job in a position of leadership and power, so they overcompensate by abusing their rights that come with the role and bully/harass others.
In what cases is impostor syndrome involved?
Can most power trip behavior be explained from feeling self-doubt about their power position (while not honestly expressing it)?
I don't know how often accurate it is. However, I haven't seen explanations of power tripping within the context of impostor syndrome.