GE DR60 - Frequency Calculation

DR60
28
DR60-TM-EN-2A
Waveform/Fault recorder
memory usage above 98%
BSE/ALARMSGGIO1. Alm6
Happens when the
memory becomes 98% full
for waveform recorder
Disturbance recorder
memory usage above 98%
BSE/ALARMSGGIO1. Alm7
Happens when the
memory becomes 98% full
for disturbance recorder
Trend recorder memory
usage above 98%
BSE/ALARMSGGIO1. Alm8
Records memory exceeds
98% for trend recorder
SOE recorder memory
usage above 98%
BSE/ALARMSGGIO1. Alm9
Records memory exceeds
98% for SOE recorder
GOOSE subscriber failure
or timeout
BSE/ALARMSGGIO1. Alm10
Time for the next expected
GOOSE message to come
exceeded
Warnings
Data Name
Description
Sync OK
BSE/ALARMSGGIO1.Wrn1
Equipment not sync
No communication
Ethernet interface 2
BSE/ALARMSGGIO1. Wrn5
Loss of communication
with ethernet interface 2
Waveform/Fault recorder
memory usage above 90%
BSE/ALARMSGGIO1. Wrn6
Happens when the
memory becomes 90% full
for waveform recorder
Disturbance recorder
memory usage above 90%
BSE/ALARMSGGIO1. Wrn7
Happens when the
memory becomes 90% full
for disturbance recorder
Trend recorder memory
usage above 90%
BSE/ALARMSGGIO1. Wrn8
Records memory exceeds
90% for trend recorder
SOE recorder memory
usage above 90%
BSE/ALARMSGGIO1. Wrn9
Records memory exceeds
90% for SOE recorder
3 Frequency Calculation
The DR60 calculates frequency applying a moving average filter in the derivative of the
angle of the positive sequence voltage, the angle is calculated four times per cycle and
so is the frequency.
.