From TechCrunch · Tim De Chant · · 1m 10s
Grid Synchronicity Explained
Researchers solved why global power grids drop frequency every 60 seconds.
In brief
Researchers solved why global power grids drop frequency every 60 seconds. Batteries and data centers cause minute power sags as they sync clocks, leading to grid instability. Originally reported by TechCrunch.
Global Grid Anomaly
Mysterious electrical sags occur every 60 seconds across power grids worldwide.
Frequency Drop Mystery
Grid operators faced regular frequency drops that happened at the same time on grids across continents.
Resonant Frequency Risk
Hydropower plants can cause dangerous ultra-low frequency oscillations through mechanical resonance.
Initial Investigation
Researchers tested hydropower systems but couldn't explain why the resonance persisted for years.
Clockwork Clue
The team realized the precise timing required a clock, as disturbances occurred every 60 seconds.
Jülich Campus Test
Over 80 smart power meters detected minute frequency drops on campus battery systems.
Ireland Data Center Impact
Data centers caused frequency drops to quadruple from 3 mHz in 2016 to 12 mHz in 2021.
Grid Stability Risk
Current drops could push grids toward blackouts if other loads also cause sagging.
Solution Proposed
Add randomization to state-of-charge checks to prevent synchronized disturbances.
The key point
Batteries and data centers cause minute power sags as they sync clocks, leading to grid instability.
