Auto-refreshing ads Publishers are not permitted to refresh a page or an element of a page without the user requesting a refresh. This includes placing ads on pages or in placements that auto-redirect or auto-refresh. Additionally, publishers may not display the ads for a preset time (i.e., pre-roll) before users can view content such as videos, games, or downloads.
If you ever watch illegal sports streams, the video player always 'dies' and you have to reload the page, presumably because the reload give the host more money in ad impressions. Maybe you could incorporate something like that on your pages if you're comfortable with being annoying
I auto-refresh two specific ads on my sites, but it's not with Adsense so it falls within these networks' guidelines. Those two ads get a much better RPM because they produce more impressions per session and higher visibility. These are anchor ads at the bottom of the screen and a scrolling sidebar ad on desktop that scrolls down with you.
It's good and not harmful to user experience. Just make sure it's okay with the network. As CCarter points out, it's not okay with Adsense.
Websites which do auto-refresh for whole website are soooo evil. You're reading an article, you're in the middle of it and the website just auto-refreshes. I used to be a reader for couple of websites, but when they introduced that auto-refresh thing, I just abandoned them.