Open AccessHarmonic analysis in electrical system at Andalas University Hospital
Author(s) -
N Afni,
Refdinal Nazir,
Eka Putra Waldi,
Andi Pawawoi
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/602/1/012009
Subject(s) - total harmonic distortion , thd analyzer , thursday , distortion (music) , harmonic , spectrum analyzer , electrical engineering , voltage , acoustics , materials science , electronic engineering , physics , engineering , nonlinear distortion , amplifier , linguistics , philosophy , cmos
In this paper, harmonic distortion in the electrical system at Andalas University Hospital is analyzed. The Total harmonic distortion (THD) was measured by The Fluke 430-II power analyzer for three days from 27 th - 29 th June 2018. The data were recorded every ten minutes. The THD of the current was from 3.09 % on Thursday at 08.40 (in phase L3) to 9.35 % on Thursday at 23.00 (in phase L1). The values of the THD show that high values of the THD occur at night from 18.00 to 08.00 at morning. The low values for the harmonic distortion of the installation occur during the day from 08.00 to 18.00 that occur for low active power. The harmonic distortion in the electrical system during the day was quite low. The current harmonic distortion was depending on the type of load. The non-sinusoidal current has harmonic content that interacts with the electrical system will create voltage distortion in the electrical system even if the supply is sinusoidal.