GEK-106426A MIB High Impedance Bus Differntial Relay C-3
APPENDIX C C.2 DIGITAL FILTER
C
Figure C–4: can experience small variations for frequencies that are not the fundamental and its harmonics, as the
measure varies for these frequencies. As an example, we can see in the next figure how a relay measure varies when it
is set to 50 Hz, and it is being applied 60 Hz.
Figure C–4:
This case will never occur for the fundamental frequency and its harmonics, where the filter gain is always 1 and 0
respectively.
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