sentence: Harmonics are a mathematical way of describing distortion to a voltage or current's waveform.
sentences_before: Power system harmonics' are the harmonic contents from the utility frequency.
sentences_after: This distortion is produced by non-linear devices connected to the power system. It can cause power quality problems. It increases heating in power equipments.
concept_name: harmonic
headings: Power system harmonics
categories: Electricity