Open AccessAnalysis of expression for determination of specific capacitive conductivity of power lines and refinement of calculations of earth fault currents in networks with isolated neutral
Author(s) -
A. V. Bubnov,
Viktor Barskov,
А. Н. Кириченко,
A. V. Schekochikhin,
G. V. Malgin
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 - 10.1088/1742-6596/1546/1/012045
Subject(s) - electric power transmission , overhead (engineering) , fault (geology) , admittance , ground , power (physics) , capacitive sensing , current (fluid) , computation , electrical engineering , computer science , mechanics , topology (electrical circuits) , physics , engineering , algorithm , geology , electrical impedance , thermodynamics , seismology
Topic relevance is due to necessity of the correct mathematical expressions during the calculation of constants of equivalent circuit of power supply system, including the overhead transmission lines. Research purpose is the allowances thanks to which formula for capacity admittance calculation and of ground fault current in electrical grids with insulated neutral determination were deduced and made common use. As exemplified by numerical computation accepted allowances can lead to significant error (more than 15%), for example, during the determination of single phase-to-ground fault current in electrical grids with insulated neutral.