(GE-LSTG) EH Turbine Control Concepts
Course Overview
This Learning-Doc emphasizes
the concepts of the GE electronic control systems (the concepts should
apply with any upgraded control system, providing the designer emulated the
original designs – most have done this). The LD describes the basic laws
of steam turbine controls and the relative importance of valve
positioning. Detailed discussions on speed control off line, speed load
control while on-line, load limiters, pressure control (limiters), and
positioning the turbine steam inlet valves. Topics will include operator
interaction with the control system and unit reaction to grid conditions and
how responses may be limited. All related alarms and alarm responses are
included in this discussion.