16-05-2012, 12:33 PM
Testing Numerical Transformer Differential Relays
B6Turner09.ppt (Size: 534 KB / Downloads: 95)
INTRODUCTION
Types of Transformer Differential Protection:
Restrained Phase Differential
High Set Phase Differential
Ground Differential
Power System Parameters:
Source Impedance (Varies)
XT = 10%
RF (Varies)
Ground Fault Location (5% from Transformer Neutral)
Waveform Sources:
Events from Numerical Relays
Events from Digital Fault Recorders
Simulate using Transient Software