LinuxDevices: Linux Device Keeps China’s Lights Lit

“China’s Academy of Electrical Power, a state research group,
has used Linux and a real-time database from McObject to build a
Phasor Measurement Unit (PMU) aimed at preventing widespread,
cascading power failures, such as the one that blacked out much of
the northeastern United States and parts of Eastern Canada in
August 2003.

“The Linux-based PMU is installed in power substations, where it
samples voltage stability and other power conditions hundreds of
times per second…”