Analysis of the effect of metal oxide arresters on system resonance using the describing function method

A theoretical analysis of the effect of gapless metal oxide arresters on power system resonance is presented. The describing function method is used to approximately evaluate fundamental and harmonic resonant conditions for systems involving metal oxide arresters. The study shows that the presence of metal oxide arresters not only introduces no new resonant conditions, but also can help to eliminate some old ones. Computer simulations were performed to verify these theoretical results.<
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