Open AccessStudy of the patterns of change in absorption current over time and its use for measuring insulation resistance
Author(s) -
K. Yu. Solomentsev,
V. I. Lachin,
V. B. Dyachenko,
Д. А. Плотников,
А. А. Ховпачев,
Ya K. Solomentsev
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 - 10.1088/1742-6596/1661/1/012158
Subject(s) - current (fluid) , absorption (acoustics) , extrapolation , materials science , mechanics , nuclear engineering , dielectric absorption , exponential function , power (physics) , electrical engineering , environmental science , forensic engineering , voltage , composite material , engineering , thermodynamics , physics , mathematics , statistics , mathematical analysis , capacitor
The article presents a computer simulation of absorption currents in dielectrics. The results of the study of changes in the absorption currents in time, as well as accelerated measurement of the insulation resistance taking into account the absorption current, are considered. When measuring the insulation resistance of electric power facilities, the absorption current which flows through the insulation and drops to zero in a very long time may initially exceed the leakage current. The article analyzes various patterns of representing the absorption current and proposes a new formula containing exponential and power functions. An approach is proposed for accelerated measurement of insulation resistance using extrapolation of absorption currents, that is, the calculation of the value (forecast) of the steady-state current in the measuring circuit, without waiting for the end of the absorption current flow and transients.