# ROCOF

**Definition:** Rate of Change of Frequency.

## Related Links

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df/dt Relay – Rate of Change of Frequency (ROCOF) Relay | Electrical Concepts

What is the application of rate of change of frequency (ROCOF) protection df/dt (81R) in protection relay.

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Rate of change of frequency – a power quality descriptor – IEEE Conference Publication

ROCOF – Rate of change of frequency measurements

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