Open AccessOn the location of a power line fault
Author(s) -
Nadezhda Buryanina,
Yurii Korolyuk,
M. Koryakina,
Elena Lesnykh,
Konstantin Suslov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1582/1/012018
Subject(s) - aperiodic graph , relay , current transformer , fault (geology) , transformer , computer science , protective relay , voltage , electronic engineering , algorithm , electrical engineering , power (physics) , engineering , control theory (sociology) , real time computing , mathematics , physics , artificial intelligence , quantum mechanics , seismology , geology , control (management) , combinatorics
The paper proposes an algorithm to exclude the aperiodic components from short circuit currents. The computer-implemented algorithm allows locating a fault and a phase failure in 0.5 - 0.6 milliseconds. During this time interval, the magnetic cores of current transformers (CTs) do not reach saturation and processors receive undistorted information from the current transformers. Four measurements of instantaneous values of currents that are made in equal time intervals (sampling intervals) are sufficient to implement the algorithm. The exclusion of aperiodic components increases the accuracy of the fault location. The algorithm can also be used in the location of open-phase fault and in the digital relay protection based on the measurement of current and voltage.