Harmonic Current Detection of Electric Arc Furnace System Based on the Method of Eliminating Zero-sequence Component

Detecting harmonic current in net is a key to compensate the system. Aimed at the problem of harmonic distortion in electric arc furnace system, this paper brings forward the method of eliminating zero-sequence component and puts it into three-phase four-wire of arc furnace system. Furthermore, the paper builds mathematic model and simulates it. The simulation results show that this method can detect higher harmonic components. Compared with the traditional detecting method, this way simplifies the detecting algorithm and increases the precision of harmonic current detecting in arc furnace system.