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General Product Information

Real time adjustment for higher availability

As part of our ongoing commitment to meet the changing requirements of your operating assets, we offer the latest technology to help to enhance your operating plant capability and flexibility as part of Siemens Flex-Power ServicesTM. One of our modernization products is Stability Margin Controller Upgrade.

The Advanced Stability Margin Controller Upgrade is intended to improve the combustion stability of your gas turbine. By modulating the pilot gas amount and the turbine outlet temperature, the product is designed to increase the combustion stability during part and base load operation, to allow more flexible operating conditions or a faster reaction on grid code fluctuations.

Your benefits


The Advanced Stability Margin Controller Upgrade is a closed loop control of combustion stability. This is achieved by simultaneously adjusting the control parameters to effect a real-time adaptation to the changing gas quality, ambient conditions and performance.


The Advanced Stability Margin Controller Upgrade can help make your unit more flexible as well as more reliable and competitive in the continuously growing F-class market. This upgrade offers you a clearly technical and monetary quantifiable benefit.


Benefits may include: 

  • Increased availability
  • Prevention of combustion instability related trips and unloading events
  • Optimized operation during changing fuel gas qualities

Scope of Supply

The Advanced Stability Margin Controller Upgrade is just one of the many innovative modernization packages available.


The scope of this upgrade includes:

  • Installation or upgrade of combustion dynamic monitoring system (Argus)
  • Installation of two additional dynamic pressure transmitters at burner flanges
  • Instrumentation and control modification for active optimization of pilot gas flow and turbine outlet temperature


We recommend the installation of this upgrade at a major outage. We offer a full range of field service capabilities to help you manage your maintenance and outage schedules.


The Advanced Stability Margin Controller Upgrade with the above designated scope of supply is available for SGT5-4000F (V94.3A) and SGT6-4000F (V84.3A) and may be combined with other modernizations.


* Depending on site specific conditions

Click here to get the product information as a PDF:
Advanced Stability Margin Controller for Siemens Gas Turbines

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