Upvote:3
Assuming you're not married and simply want to visit the Schengen area as a tourist, a far simpler option would be to go ahead and apply for a regular tourist visa as a non-EU citizen. Being a permanent resident of the UK means your partner's chances of being refused are effectively nill, so you being an EU citizen yourself won't change much given the circumstances.
Source: statistics of Schengen visa applications in the UK.