Well, there is Olympic Power Lifting, clean & jerk, snatch and there is Power Lifting that is actually Weight Lifting, Bench, Squat, Deads.
Olympic Power Lifting (C&J, Snatch) is primarily velocity based. Competitive Weight Lifting (bench, squat, deads) is primarily strength based. The training strategies are different and the workout routines are different, so which one are you referring to and I'll try to offer some advice.