[dw_pulse pattern in overcompensation network, 1, en_US]
Figure 6-147 Current Pulse Pattern in the Overcompensated System
For the faulty feeder, the current pulse pattern is as follows:
•
When the clocking pulse is on, the capacitor is switched on, the zero-sequence current 3I0 in the faulty
feeder is reduced, and the corresponding current pulse pattern is off.
•
When the clocking pulse is off, the capacitor is switched off, 3I0 in the faulty feeder is increased, and the
current pulse pattern is on.
Clocking Pulse
Capacitor 3I0 in the Faulty Feeder Current Pulse Pattern of the Faulty Feeder
On On Reduced Off
Off Off Increased On
Protection and Automation Functions
6.15 Sensitive Ground-Fault Detection
SIPROTEC 5, Overcurrent Protection, Manual 621
C53000-G5040-C017-8, Edition 07.2017
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