Open AccessSynchro‐phasors Assisted Back‐up Protection of Transmission Line
Author(s) -
Nougain Vibhuti,
Jena Manas K.,
Panigrahi Bijaya K.
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2017.1711
Subject(s) - dependability , phasor , electric power system , power system protection , transmission network , electric power transmission , transformer , engineering , computer science , synchro , protective relay , transmission line , reliability engineering , transmission (telecommunications) , computer security , electrical engineering , power (physics) , voltage , physics , quantum mechanics
Certain power system situations force protection schemes to mal‐operate. Such mal‐operations associated with back‐up protection (BP) schemes might worsen the situation by initiating the cascading effect, damaging critical elements such as generation units, transformers etc. of the power system, or leading to complete collapse of the power system. To adapt to such a network structure, the relays which are going to participate in BP of transmission line have to evolve. Integration of protection systems, communication network, and computer technology has to be the approach for faster information sharing and decision making. Analysis of recent blackouts clearly shows the importance of advancement of wide‐area measurement systems and adaptive nature of relaying. Synchro‐phasors assisted BP scheme is proposed in this work, which helps the relays adapt according to the prevailing system situations and decisive action is taken considering security and dependability aspects of the relays.