•Primary controllers tuned for the assumed conditions in the rest of the system;
•As system conditions vary, the controllers could “malfunction” in a variety of ways (ranging from wrong logic, through being too slow and/or of insufficient capacity; lack of coordination) [2];
•Consequently, hard to ensure system-wide
performance;
•Consequently, general tendency not to rely on control outside normal regions; missed opportunities to operate efficiently.
•A methodology is needed for SEAMLESS management of the system across a
broad range of conditions.