I am in university and I have a really weird obsession about learning about different electrical grids around the world and the independent system operators. I will talk to my friend for hours about the various topics such as the politics of the systems, different fuel mixes and the sort and how the weather effects it. My friend is a really nice guy and talks to me about it but I think it is unhealthy to be so interested and talk for hours about it.

Do I have a mental disorder?