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Rolls-Royce has over 30 years of experience in rotary and static excitation systems utilising Automatic Voltage Regulator (AVR) systems and Electro Hydraulic Governors (EHG). Through a process of continuous development and improvement we have contributed to the advancement of turbine control solutions from the first analogue system produced in 1969 through to the latest developments in Digital Signal Processing (DSP).  We provide a full range of turbine control equipment solutions with the integration of exclusive in-house developed systems and best in class commercial off the shelf products.

Our extensive experience providing turbine control solutions can be seen in even the smallest details of all of our products and in turn allows for the uninhibited testing, qualification and implementation within the market.  This same experience also enables us to effectively and efficiently manage design, installation, commissioning and maintenance through the entire life cycle of our products.  

High level benefits include:

  • Triplex architecture for higher availability and easy fault finding
  • On-line replaceable modules with automatic parameter alignment
  • Compact Modular constructure with minimal wiring

Learn more about the full suite of Rolls-Royce custom engineered and plant automation & monitoring systems.

EHG Systems

The Rolls-Royce  Electro-Hydraulic Governor (EHG) is specifically designed for the control of large steam turbine plants and has been applied to new and retro-fit applications worldwide.  We provide proven control system solutions, offering enhanced performance, protection and life extension across a broad range of steam turbine sizes and manufacturers.  The system is flexible whilst at the same time being competitive,  and can be customized to suit almost all customer requirements. 

Our EHG systems achieve  very high availability by employing triplex modular redundancy for the controller and parallel redundancy for steam valve control.

The design objective is that any one component failure ( in many cases multiple component failures ) will have either no effect, or a very minor effect, on load generation.

Considerable emphasis is placed on segregation of the redundant parts of the system to minimize the effect of common mode faults.

Major design emphasis is also placed on:                                               

  • Obsolescence avoidance                            
  • User friendly displays and controls   
  • Optimized control algorithms   
  • Ability to perform online maintenance activities Steam valve control          
  • On load valve testing     
  • Automated software generation                
  • Primary and secondary capability testing     
  • Boiler feed pump turbine EHG            
  • Off line simulation capability

Learn more about the full suite of Rolls-Royce custom engineered and plant automation & monitoring systems.

 

Excitation Systems (AVR)

Rolls-Royce Excitation Systems are specifically designed for the control of large synchronous generators and have been applied to new and retro-fit applications worldwide.  We provide customized  control system solutions, offering enhanced performance, protection and life extension across a broad range of generator sizes and manufacturers.  Our system configurations  flexible while remaining competitive within the market.

A range of system architectures are available to satisfy all customer availability & cost requirements.  These range from, single channel AVR with single 100% thyristor converter, through to triplex modular redundant ( TMR ) AVR with individual firing pulse voting on each of 24 plug in thyristor modules.

These  high availability systems employ TMR for the controller and parallel redundancy for the power electronics devices (thyristors). The design objective is that any one component failure (in many cases multiple component failures) will have either no effect, or a very minor effect, on load generation.

Considerable emphasis is placed on segregation of the redundant parts of the system to minimize the effect of common mode faults.                                                           

Major system design emphasis is also placed on:                                               

  • Obsolescence avoidance
  • User friendly displays and controls
  • Optimised control algorithms 
  • Ability to perform online maintenance activities 
  • Automated software generation
  • Off line simulation capability

Learn more about the full suite of Rolls-Royce custom engineered and plant automation & monitoring systems.