What is Power system harmonics?
[[File:Harmonics.jpg|thumb|Power system harmonics]] '''Power system harmonics''' are the [[harmonic]] contents from the [[utility frequency]]. Harmonics are one kind of [[wikt:distortion|distortion]] to a [[voltage]] or [[Electric current|current]]'s [[waveform]]. This distortion is produced by [[Nonlinear system|non-linear]] devices connected to the power system.<ref>{{cite web|title=Electrical heating|url=http://snowman.com.au/electrical|publisher=www.snowman.com.au|accessdate=3 May 2016|archive-date=1 May 2016|archive-url=https://web.archive.org/web/20160501114316/http://snowman.com.au/electrical/|url-status=dead}}</ref> Since equipment is made to work at the utility frequency, harmonics can make it work wrong. This is one kind of power quality problem. It increases [[heat]]ing in power equipment. Harmonics can be eliminated or reduced by using [[Filter (electronics)|harmonic filter]]. ==References== {{reflist}} [[Category:Electricity]] {{sci-stub}}