GE DS215GHDQG5AZZ01 Module

GE DS215GHDQG5AZZ01 is a module for turbine control, mainly used in turbine control, which is part of the Mark V series of steam turbine control systems, used to protect core and main trip circuits, etc. As part of the GE General Electric Speedtronic Mark V gas turbine control system, it provides high reliability through advanced protection and multiple redundancy to meet gas turbine control requirements.

SPEEDTRONIC Mark VI Control contains a number of control, protection and sequencing sys-tems designed for reliable and safe operation of thegas turbine. It is the objective of this chapter to de-scribe how the gas turbine control requirements are met, using simplified block diagrams and one–line diagrams of the SPEEDTRONIC Mark VI control,protection, and sequencing systems. A generatordrive gas turbine is used as the reference.

Control of the gas turbine is done by the startup, ac-celeration, speed, temperature, shutdown, and manual control functions illustrated in Figure 1.

Sensors monitor turbine speed, exhaust tempera-ture, compressor discharge pressure, and other pa-rameters to determine the operating conditions of

the unit. When it is necessary to alter the turbine op-erating conditions because of changes in load or am-bient conditions, the control modulates the flow of fuel to the gas turbine. For example, if the exhaust temperature tends to exceed its allowable value for a given operating condition, the temperature control system reduces the fuel supplied to the turbine and thereby limits the exhaust tempera-ture.