Sadly I'd be very surprised if Prisoner will ever be rerun on TV - particualrly now that the full series is available on DVD (thanks to Val Lehman, who pulled alot of strings I believe to get that project off the ground), which I own.
It hasn't been on in the UK (a Prisoner stronghold and where the official fan club -
http://www.prisoner-cellblockh.co.uk/ - is based) since 2001 I think, and hasn't been on Australian TV since UKTV finished showing the full series in 2004. There are a lot of clips on YouTube (including full episodes) if you want a quick Prisoner fix though.
Last year I had the priviledge of going to both 30th anniversary celebrations - the first was run by Val Lehman at the actual studios in Nunnawadding (some of the prison windows are still there) which had about 30 of predominantly the early cast - Collette Mann (Doreen), Amanda Muggleton (Chrissie Latham), Patsy King (Governor Erica Davidson), Fiona Spence (Vinegar Tits), Gerard Maguire (Jim Fletcher), Carol Burns (Frankie), Jane Clifton (Margo Gaffney), Peta Toppano (Karen Travers), and Anne Phelan (Myra Desmond) amongst others. The second one was the fan club celebration in St Kilda with Maggie Kirkpatrick (The Freak - who was unable to attend Val's celebtration due to her Wicked commitments) along with Reylene Pearce (Phyllis Hunt), Maxine Kilingbatis (Bobbie Mitchell), Maggie Millar (Marie Winter), Louise Siverson (Lou Kelly) and Lois Collinder (Alice 'Lurch' Jenkins). Both were amazing events.