Utility Grid Master Control

The SI-TEC Xtend GSM (Generator System Master) is typically used for controlling multiple generators when parallel to a utility grid, providing control of Si-TEC Xtend CGC generator modules. Multiple GSM controllers can be used in a single system for parallel utility grid, sub feeders, bus couplers, etc.. Each Si-TEC Xtend GSM controller being one module of the permitted maximum of 24 units making up a standard SI-TEC LAN network.

A GSM may control a single generator or multiple generators in a Si-TEC Xtend system, providing control and limiting of import/export active power (kW) and reactive power (kVAr), or based on generator load reference. A standard system may comprise of up to 24 units and split into 4 groups of generators/masters 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.

Power Station – Utility Grid – Multiple Generator Control

Control Unit Controller Generator Applications Documents

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  • The Si-TEC Xtend GSM Controller provides synchronising, paralleling, loading and unloading of 3-phase power generation system with the supply grid
  • The Si-TEC Xtend GSM provides multiple functions including synchronising, paralleling, loading and unloading of a 3-phase power generation system with the “Supply Authority Mains or Grid”
  • Up to 24 modules (combination of GSM and CGC) may communicate in a single network
  • Standby power stations where “Bump less” (delayed soft) transfer back to the supply grid is required, with no exporting of power to the grid
  • Standby power stations used for “Peak Shaving” (peak lopping) applications where generators parallel with the supply grid during “Peak Demand” periods, setting a maximum limit for the imported grid supply
  • Prime power stations that parallel and are “Base Loaded” (constant supply) to the Supply Grid, with provision to “Export kWatt” to suit the supply grid
  • Prime power stations that supply power for plant load requirements, and export excess power to the supply grid (e.g. sugar mills, other industries, etc.)
  • Prime power stations that supply power for plant load requirements, and require “Standby or Back Up” power from the supply grid
  • Power stations that are “Islanded” (isolated) and require “True Time Error Correction” for the power system. This is utilised where the power system synchronising clocks are tied to the plant load.
  • 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

Master generator controller

  • Utility grid generation
  • Isochronous island operation

  • Sugar mills
  • Paper mills
  • Standby power systems
  • Hospitals
  • Mining
  • Oil and gas

  • Multiple generator systems


pdfData Sheet GSM