IEC 62934 pdf – Gird integration of renewable energy generation – Terms and definitions 3.2.25.5 over-frequency ride-throughOFRT ability of a generating unit or power plant to stay connected during a limited duration rise ofsystem frequency 3.2.26 system oscillation3.2.26.1 low-frequency oscillationLFO electrical oscillation occurring in an electric power system at a frequency usually between0,1 Hz to 3 Hz Note 1 to...