Power Supply: Understanding Unstable Grids

A sustainable energy supply requires the expansion of power grids. However, new transmission lines can also lead to grids becoming more unstable rather than more stable, as would be expected. This phenomenon is referred to as the Braess paradox. For the first time, an international team, including researchers from the Karlsruhe Institute of Technology (KIT), has now simulated this phenomenon in detail for power grids, demonstrated it on a larger scale, and developed a prediction tool, which is to support grid operators in decision-making. The researchers report in the journal Nature Communications. (DOI: 10.1038/s41467-022-32917-6)

ORNL research to bring more reliable electricity to Puerto Rican microgrids

To provide more affordable, reliable and sustainable electricity to underserved communities like these, scientists from the Department of Energy’s Oak Ridge National Laboratory are partnering with local organizations, nonprofits and universities to build resilience into independent microgrids powered by renewable energy. ORNL is developing a technology that will manage groups of small microgrids as a cluster, enhancing their reliability even when damaged.