Gas Turbine Power Generation
GCS has supplied a gas turbine-generator control, monitoring, and fuel metering system for a large paper mill as a retrofit package on an old outdated control system. The plant utilizes multiple turbines including this Rolls Royce Olympus SK-30 package rated for 28.0 MW @ 60 Hz. The plant runs in parallel to the utility in baseload mode, additionally it is capable of performing black start up in isochronous mode.
TYPE OF FACILITY
- Paper Mill Prime Power Generation Utility Paralleled in Droop Base Load and Black Start Isochronous
- Rolls Royce Olympus Gas Turbine Dual Fuel Injection (Gas and Liquid) Inlet Fuel Pressure: 250 psi 28 MW, 13.8 kV, 0.8 PF @ 60 Hz
- Woodward MicroNet Plus
Gas Turbine Digital Control System for fuel control (governing), start/stop sequencing, turbine protection, and monitoring, featuring redundant power supplies and CPUs with bumpless transfer.
Woodward LQ25 / GS3
Liquid Fuel Metering Valve with Digital Driver.
Remote Input / Output Modules for Signal Expansion.
Redundant Automatic Voltage Regulator for generator voltage control, UEL/OEL limiters, AVR/FCR mode and bump less transfer to standby unit
Woodward ProTech GII
Independent Over-speed Protection Device with two-out-of-three voting.
Generator synchronizer with option for load sharing (future).
Workstation and HMI System
Two touch-screen panels in the control cabinet door and a desktop workstation in the plant control room for monitoring and control of the system.
The new control system features the Woodward MicroNet Plus Control Platform
with custom application software performing functions including automatic turbine
start / stop sequencing, fuel control, exhaust gas temperature monitoring and
turbine protection. The MicroNet Plus hardware includes redundant power
supplies and CPUs. In the event of a power supply or CPU failure, the control
will automatically transfer control to the standby CPU in a bumpless fashion
enabling the unit to continue to run until the appropriate module can be replaced.
The system also includes an electronic over-speed protection device completely
independent from the MicroNet Plus. This device utilizes three independent speed
probes that trip the turbine only when 2 out of 3 modules agree.
a redundant voltage regulator for generator excitation in a primary / standby
fashion following the same redundancy principle. The controls are packaged in two
double-bay free-standing control cabinets.
Central monitoring and control is performed via a custom HMI system featuring dual industrial grade touch-screen terminals in the control cabinet door along with a second desktop workstation in the plant control room. The HMIs provide the operator with complete system control including starting, stopping, and synchronization of the turbine
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