Advances in Power Generator Control: Precise Control of Power Systems Islands Using Time-Synchronized Measurements

Flexibility in the control of electric power generation within an industrial facility can be improved through the implementation of technology associated with recent advances in electrical system measurement techniques and communication protocols. Although generator speed governing and synchronization technology has remained relatively static in recent years, advancements in generator control, including the ability to eliminate the need for stand-alone bus synchronization systems, are described in this article. For such advanced systems, time-synchronized measurement and the control of generators are required, using technology such as IEEE C37.118 (synchronized phasor measurements) [1]. Time-synchronized measurements implemented in each generator governor controller allow for the precise control of a power system island or group of islands relative to each other or to a master reference. Accordingly, independent, perpetually synchronized power system islands were tested in a laboratory using time-synchronized governor controllers. The results are documented, and conclusions are drawn regarding the feasibility and usefulness of such technology. Additionally, challenges related to control and synchronization difficulties faced at a variety of industrial facilities are discussed as well as how this new control technology can help overcome such difficulties.