SciencePhoto: NaturePower Grids Worldwide Show Disturbance Every Minute
New research has discovered a disturbance occurring precisely every minute in power grids globally. This anomaly is caused by clock-synchronized self-tests in battery-based uninterruptible power supplies, which unintentionally act in unison. These small deviations in power system frequency were previously attributed to random fluctuations in load and generation.
Nature·



