Abstract:
The integration of distributed generations at distribution level makes the traditional fault location schemes
inappropriate, owing to bidirectional power flows and other
challenges. It therefore becomes imperative to develop new
and reliable fault identification methods in Active Distribution
Network (ADN) in order to automatically isolate and restore
the end-user services in a short space of time. To this end, this
paper presents a synchrophasor-assisted Tellegen’s theorem based
fault identification method in ADNs. At first, the two adjoints of
the original network are created and their phasor information
is stored offline. Next, it is assumed that the distribution-level
Phasor Measurement Units (PMUs) aka μPMUs are located at
the extreme buses of the actual network that provides the realtime data, and finally, both the off-line and real-time information
is utilized to detect the open or short circuit fault in the network.
The proposed fault identification method is demonstrated in
detail on a simple system, keeping in view the typical ADN
characteristics.
