One-minute frequency disturbances from synchronization in power systems

The corresponding concept in gears is to avoid meshing two gears unless the number of teeth are co-prime, because this will cause uneven wear patterns. If the tooth counts are coprime, then each tooth will contact every tooth on the other gear the same number of times, effectively "wear leveling" the teeth. In this…

I'm skeptical that this one minute jitter period is solely attributable to one minute timers in power inverter equipment. It's likely the net scale effect of all cron-like scheduling of actions in everything with a microprocessor. All the long-term scheduling that is done with minute precision (i.e. seconds field is…

Does this also apply to my small UPS here in my office? I just checked the power meter dashboard of the building and can see small peaks in the minute range. In this case it's not counting in too much on the grid level as there's a periodically charged batterie in between.