Open AccessTime‐domain application of superimposed quantities in the phase comparison transmission line protection scheme
Author(s) -
Silva Leite Junior Eduardo Jorge,
Lopes Felipe Vigolvino,
Silva Kleber Melo
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0277
Subject(s) - tripping , transmission line , time domain , electrical impedance , line (geometry) , fault (geology) , reliability (semiconductor) , electric power system , computer science , protective relay , electric power transmission , phase (matter) , power (physics) , control theory (sociology) , electronic engineering , electrical engineering , engineering , circuit breaker , mathematics , physics , telecommunications , geometry , quantum mechanics , control (management) , artificial intelligence , seismology , computer vision , geology
Here, the use of incremental currents in time‐domain phase comparison (PC) line protection schemes is evaluated. The incremental currents have been applied in modern high‐speed protection relays, showing to be suitable for protection functions based on time‐domain analysis. To carry out the proposed studies, the alternative transients programme was used to simulate a wide variety of fault scenarios in a 500 kV/60 Hz test power system, considering different fault features (distance, resistance, and inception angle), source‐to‐line impedance ratio values, and system loading conditions. In each case, the tripping times of the time‐domain PC protection when implemented using traditional phase currents, sequence currents, traditional incremental currents, and incremental replica currents are compared. The obtained results show the use of incremental currents improves the PC protection reliability, speeding up the protection operation times.