The nasty trick is that powerPerdition occurs on the wooden pipe interface alone (and, obviously, adds up rather quickly), making it very tricky to work around even by completely removing consumers from the network. Turning engines off completely, having multiple small networks, and then only putting in enough total energy to complete a batch of work, is the only real way to avoid losses.
Those are all really hard to do automatically. I wonder if the supposed policy of not including objects from BC submods means they expect you to use Additional Buildcraft Objects to make this work? It has both power switch pipes and power diode pipes which are really required to do that properly unless (and this is not unlikely) there are new mechanical changes to buildcraft power I don't know about.