Power Quality Issues of Electric Arc Furnace and their Mitigations -A Review

Electrical Power quality is used to determine the health of the electrical power system that connects the consumer’s devices. It is concerned with voltage quality, current quality, reliability of service, quality of power supply etc. Actually the power quality refers to maintaining the sinusoidal waveform of power distribution bus voltage at rated voltage magnitude and frequency. Voltage flicker and harmonics are the main types of power quality problems that are very common to the power system containing electric arc furnace (EAF). Utilities connecting electrical arc furnaces are highly concerned regarding these disturbances and try as far as possible to minimize them. In this paper, EAF is presented for the study of power quality problems and their mitigation. Analysis regarding power quality indices related to both AC and DC type arc furnace has been presented.