Sudden islanding of a process unit will of course have
consequences for that process unit. The consequences can
often be limited by the use of fast load shedding. There are
consequences however, for the other process unit. If the
process unit associated with the 40MW GTGs is islanded, the
other GTGs will suddenly lose much of the load they were
supplying power to. Primary regulation will ensure that the
GTGs will reduce their power output, but the main problem will
be that they can no longer operate in the DLN region. It is
important that the consequences of normative incidents be
reviewed for all parts of the plant, and not just the part most
directly affected.