Abstract:
This paper proposes a novel Centralized Islanding
Detector (CID) based on the synchrophasor data collected by
the Distribution-level Phasor Measurement Unit (DPMU). The
Teager-Kaiser energy of voltage phase angle difference between
DG bus and reference substation bus is utilized as a key indicator
to differentiate between Islanding and non-Islanding events. The
efficacy of the proposed method is verified on a modified IEEE 33
bus test-system under various test scenarios such as loss of mains,
single/multiple DG Island with zero/non-zero power mismatch,
load shedding, capacitor switching, faults, motor starting, etc.
Furthermore, superiority of the proposed method with other
centralized Islanding detection schemes in terms of parameter
selection, detection time, computational complexity and non
detection zone is elaborated. The proposed indicator can work
in accordance with advance distribution management system for
wide-area situational awareness.
