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Auxiliary System-Governor-Micro Computer Governor

Micro Computer Governor

  The turbine governor is the essential part of the hydraulic power unit for efficient conversion of hydraulic energy to electric energy.


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Hydraulic power unit (HPU)

Micro Computer Governor oil hydraulic power unit (HPU) packages including sump tank, pumps, control and main relay valves, filters, monitoring devices, and pressure accumulators. The standard concept has a modular design with use of reliable industrial components and design pressure up to 250 bar.

Preferably we use self-regulating axial piston pumps for the main oil supply, but constant pumps (e.g. screw or gear type) with special pump control blocks can also be used.

Special hydraulic features needed for the turbine control - like pump control blocks, failsafe function on main relay valves, special shape of control edges on main relay valves, etc. - have been developed in order to guarantee maximum reliability and safety.

A series of standard, but tailor-made main relay valves are available for special applications on old low-pressure systems as well as on new turbines requiring high operating capacity.

The hydraulic system is designed together with the actuating elements, both for new plants and rehabilitation projects.

Digital turbine governor

Micro Computer Governor stand for flexible and reliable turbine control. The new challenges on grid stability are faced by means of the load frequency algorithm. The high number of communication interfaces distinguishes the digital turbine governo, which makes operation and remote assistance easy to implement. Due to the various input and output modules, a wide range of sensors and actuators can be used together with the turbine governor, even when existing hydraulic components must be taken into account.

The digital turbine governor gets by with the functional requirements of the client because of a scalable and modular solution. It can be implemented as stand-alone solution or as integrated part of the existing structure. Preceding simulations and stability studies ensure stable and reliable control.


The governor performs different tasks during operation. Beginning with the start of the turbine on demand and stabilizing the speed for synchronization, it ensures stable load control when the unit is connected to the grid. Further tasks are supporting the grid frequency during primary control and fast reaction on load rejection and island detection. Due to the various requirements of the different operation modes, bump-less switching is vital for the turbine governor in order to provide safe and preserving operation.