Reverse power vs Reverse Current

[manish]

Where would a reverse power relay (32) be used and where would a reverse current relay (67) be used?

What i understand is reverse power compares phase angle between line voltage and current, while a reverse current requires only current as input parameter...

 

[SG-1]

Where would a reverse power relay (32) be used and where would a reverse current relay (67) be used?

What i understand is reverse power compares phase angle between line voltage and current, while a reverse current requires only current as input parameter...

Both of these could/would be used on an incoming line breaker. Usually not together though. I see way more 67s than 32s.

The 67 can be voltage or current polarized, meaning there must be either a voltage source or a second current source for reference.

The trip regions are different between the two relays, but overlap each other.

Welcome to the forum !

 

[72.5kv]

32 generator reverse power protection, anti-motoring protection of the unit.
67 relay used on transmission line protection