Siemens Energy refurbished and integrated several elements, such as the Omnivise T3000 control system, including turbine governor, hydraulics, monitoring, and instrumentation, as well as generator electrical equipment.
In order to better adjust the grid connection, the turbine control system for the existing pair of MHI DEH turbines was updated. Additionally, a compact voltage regulator with an integrated power module, along with new protection devices, were installed to secure critical electrical components.
Even though all the initially-scoped enhancements were made, the project was not finished. Once Landsvirkjun realized the potential benefits offered by new hydraulics and advanced control algorithms, the improvement ideas began to flow, and the project scope expanded over time. One of the project’s main achievements was to enable the Krafla plant to provide primary frequency control.