At Holland-Controls, we have designed and implemented several generator excitation systems over the past 15 years, primarily based on the Basler DECS-250. In 2019, we supplied such a system for a GE Frame-6 generator at Sappi Papermills in the Netherlands.
Since then, the energy landscape has changed dramatically with the rise of solar and wind power, the introduction of electric boilers, and a more rigid grid connection. These developments can lead to unusual grid requirements. Recently, the situation arose where the generator was required to deliver at least 4 MW of active power while simultaneously producing 19 MVAR of reactive power to stabilize the grid power factor. This meant operating the generator at a power factor of just 0.2, an exceptionally rare condition.
By default, the excitation system is limited to around 0.5. However, by applying our expertise (see our LinkedIn post “Excitation control workshop” earlier this year) and making use of the auxiliary bias input, we successfully extended the system’s capability, achieving stable control even at a power factor of 0.2.
This project demonstrates how Holland-Controls continues to deliver flexible and innovative solutions that address the evolving challenges of today’s energy market, ensuring reliability and customer satisfaction at every step.
Adam Smithstraat 6
7559 SW Hengelo
The Netherlands
