Steam Turbine Generator Controls

Used to control the speed, active power, voltage and reactive power of generators to 600 MWatt. 24 Si-TEC Xtend modules may be connected to a standard Si-TEC LAN system. For control of a single generator, or one controller per generator in a Si-TEC Xtend system.

A standard system may comprise 24 units and split into 4 groups of generators catering for split bus/feeder system. Each group having the capability of operating as isolated isochronous or utility grid-paralleled systems. Re-synchronising of split bus/feeders and soft load transfer can be conducted using the Si-TEC GSM master module(s). Systems may be expanded to over 500 modules and 80 groups. The Si-TEC Xtend CGC controllers are available with a variety of fuelling actuator outputs.

Generator Control – Steam Turbine Condensing / Back Pressure

thumb LEA Steam Turbine Controls
Leaflet Steam Turbine Controls
Control Unit Controller Generator Applications Documents

CGC-T
si-tec adg

thumb generator-control
  • Precise speed governing typically within 0.1 % of operating speed at steady state
  • Dual MPU (or prox.) speed sensors for redundancy
  • Auto run up and warm through
  • Synchronising control with phase and voltage matching
  • Process control available as standard back pressure / condensing
  • Grid-parallel and islanded operation
  • Isochronous / references / base load / grid droop operation
  • kWatt control and load sharing
  • kVAr/PF control and kVAr sharing
  • Generator to 600 MWatt
  • Major grid generators with comprehensive droop slope curves
  • Wide range of control valve actuator drivers available
  • Si-TEC GSM Master compatible – single/multiple GSM control
  • Load share with all Si-TEC CGC including
    • Extraction turbines
    • Diesel / gas generators
  • Extensive user selected control functionality
  • Extensive alarm functions
  • On-board diagnostic
  • Dedicated communications port for customer PLC/DCS interface
  • Compatible with all Si-TEC support PC software
  • 24 Si-TEC unit capacity with standard system

Steam turbine generators

  • Steam turbine generators
  • Back pressure turbines
  • Condensing turbines

  • Utility grid generation
  • Isochronous island operation

  • Sugar mills
  • Paper mills
  • Oil and gas
  • Geothermal
  • Utility generation

  • Multiple generator systems

 

 pdfData Sheet CGC

 

Generator Control – Steam Turbine – Basic Extraction Control

Control Unit Controller Generator Applications Documents

CGC-ET
si-tec adg

CGC-ET-System-Overview
  • Precise speed governing typically within 0.1 % of operating speed at steady state
  • Dual MPU (or prox.) speed sensors for redundancy
  • Uses Si-TEC CGC 4-20 mA AO3 for secondary valve actuator
  • Auto run up and warm through
  • Synchronising control with phase and voltage matching
  • Extraction control using CGC (no PCU)
  • Process control available as well as extraction back pressure / condensing
  • Grid-parallel and islanded operation
  • Isochronous / references / base load / grid droop operation
  • Load share and kWatt control
  • Volt-kVAr share control
  • Generator to 600 MWatt
  • Major grid generators with comprehensive droop slope
  • Wide range of control valve actuator drivers available
  • Si-TEC GSM Master compatible – single/multiple GSM control
  • Load share with all Si-TEC CGC including
    • Extraction turbines
    • Diesel / gas generators
  • Extensive user selected control functionality
  • Extensive alarm functions
  • On-board diagnostic
  • Dedicated communications port for customer PLC/DCS interface
  • Compatible with all Si-TEC support PC software
  • 24 Si-TEC unit capacity with standard system

Steam Turbine Generators

  • Extraction turbines

  • Utility grid generation
  • Isochronous island operation

  • Sugar mills
  • Paper mills
  • Oil and gas
  • Geothermal

  • Multiple generator systems

 

pdfData Sheet CGC-ET

 

Generator Control – Steam Turbine – Extended Extraction Control

Control Unit Controller Generator Applications Documents

CGC-ETX
si-tec adg

PCU
pcu

extraction-control
  • Precise speed governing typically within 0.1 % of operating speed at steady state
  • Dual MPU (or prox.) speed sensors for redundancy
  • Uses Si-TEC PCU module for secondary valve actuator
  • PCU module doubles the logic and analogue I/O
  • Auto run up and warm through
  • Synchronising control with phase and voltage matching
  • Extraction control using CGC and PCU modules
  • Process control available as well as extraction back pressure / condensing
  • Grid-parallel and islanded operation
  • Isochronous / references / base load / grid droop operation
  • Load share and kWatt control
  • Volt-kVAr share control
  • Generator to 600 MWatt
  • Major grid generators with comprehensive droop slope curves
  • Wide range of control valve actuator drivers available
  • Si-TEC GSM Master compatible – single/multiple GSM control
  • Load share with all Si-TEC CGC including
    • Extraction turbines
    • Diesel / gas generators
  • Extensive user selected control functionality
  • Extensive alarm functions
  • On-board diagnostic
  • Dedicated communications port for customer PLC/DCS interface
  • Compatible with all Si-TEC support PC software
  • 24 Si-TEC unit capacity with standard system

Steam Turbine Generators

  • Extraction turbines

  • Utility grid generation
  • Isochronous island operation

  • Sugar mills
  • Paper mills
  • Oil and gas
  • Geothermal

  • Multiple generator systems

 

 pdfData Sheet CGC-ET/ETX

Generator Control – Steam Turbine – Staged Dual Actuators

Control Unit Controller Generator Applications Documents

CGC-TS
si-tec adg

generator control-staged-dual-actuators
  • Staged dual actuator outputs using AO3 (4-20 mA for second output)
  • Precise speed governing typically within 0.1 % of operating speed at steady state
  • Dual MPU (or prox.) speed sensors for redundancy
  • Auto run up and warm through
  • Synchronising control with phase and voltage matching
  • Process control available as well as extraction back pressure / condensing
  • Grid-parallel and islanded operation
  • Isochronous / references / base load / grid droop operation
  • Load share and kWatt control
  • Volt-kVAr share control
  • Generator to 600 MWatt
  • Major grid generators with comprehensive droop slope
  • Wide range of control valve actuator drivers available
  • Si-TEC GSM Master compatible – single/multiple GSM control
  • Load share with all Si-TEC CGC including
    • Extraction turbines
    • Diesel / gas generators
  • Extensive user selected control functionality
  • Extensive alarm functions
  • On-board diagnostic
  • Dedicated communications port for customer PLC/DCS interface
  • Compatible with all Si-TEC support PC software
  • 24 Si-TEC unit capacity with standard system

Steam Turbine Generators

  • Back pressure turbines
  • Condensing turbines

  • Utility grid generation
  • Isochronous island operation

  • Sugar mills
  • Paper mills
  • Oil and gas
  • Geothermal
  • Utility generation

  • Multiple Generator Systems

 

  pdfData Sheet CGC/TS

ALSO AVAILABLE:

Generator Control – Steam Turbine – Staged Dual Actuators with PCU Expansion I/O – CGC-TSX

Generator Control – Steam Turbine – Stall Laval – Spilt Shaft – CGC-SST