GE L90 Instruction Manual page 48

2.3 FUNCTIONALITY
2
2-16
Time Stamp
Clock
Sampling
Control
Sample
Currents and
Voltages
Raw
Sample
Remove Decaying
Compute Positive
Offset and
Sequence
Charging Current
Currents
Phaselets
Compute
Phaselets
Phaselets
Align Phaselets
Compute Phasors and
Variance Parameters
Disturbance
Detector
Figure 2–4: MAIN SOFTWARE MODULES
L90 Line Current Differential System
Peer Peer
Communication
Time
Stamps
Estimate
Ping-pong
Phase Angle
Algorithm
Uncertainties
Phase
Deviation
Estimate Phase
Clock
Angle Correction
Control Phase Deviation
from GPS signal
Frequency
Deviation
Compute
Frequency
Deviation
Phasors
Phaselets
Fault
Detector
Trip Output
Logic
2 PRODUCT DESCRIPTION
Channel
Control
831749A1.CDR
GE Multilin