Nature Energy 杂志发表论文：研究者发现世界各国的电网频率的频谱都有一个 1/60 Hz 的尖峰，存在高度相干的不明振荡。为了调查神秘调制信号来源，研究者做了大量排查，最后发现是全世界大量 UPS 电源、电源蓄能系统等设备，运行功率会周期性起伏，还会定时自检。由于这些设备都有 NTP 时钟同步功能，开始时刻就全部对齐了，最后就变成了同一时刻给电网上压力。当年的网络管理员，天天讲月月讲：cronjob 请随机化，别 00:00 UTC 一起来！现在问题从互联网蔓延到电网了，从网络攻击变成物理攻击。
Hartmann, C., Din, E.D., Carta, D. et al. One-minute frequency disturbances from unintended synchronization in cyber–physical power systems. Nat Energy (2026). https://www.nature.com/articles/s41560-026-02144-0
One-minute frequency disturbances from unintended synchronization in cyber–physical power systems - Nature Energy
Power grids on five continents show frequency oscillations with a period of exactly 1 min. The authors trace this to clock-synchronized software in devices such as uninterruptible power supplies that creates coherent, repeating demand peaks.
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