
29-1
29.1 Introduction
Power generation is a complex process in which automation systems play important roles in assisting
humans to operate the plant. Safety automation systems are designed, however, to run autono-
mously in order to protect the process running out of its operating domain or to avoid human errors.
Apower plant is designed to operate in complex power grids in which human and automation systems
interact together to deal with unexpected situations. ese situations may concern the imbalance
between generation and consumption following hazards or failure of the power plant or the net-
work, or the need of power anci