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Harmonic filters are extensively used to mitigate harmonic problems.
A properly designed harmonic filter can prevent the harmonic current from injecting into the system, or it can provide a low impedance path at the tuned frequency to remove a parallel resonance. The Harmonic Filter editor provides all the practical and popular filter structures for you to choose from.
By-pass frequency characteristic
High-Pass DampedHigh-pass with damped frequency characteristic
High-Pass UndampedHigh-pass with undamped frequency characteristic
Single-Tuned (Notch)Single-tuned frequency point
3rd Order DampedSpecial high-pass damped filter where the inductance is replaced with a series LC Circuit to provide zero losses at the fundamental frequency and therefore avoiding parallel resonance
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Learn how to size passive harmonic filters as part of harmonic analysis. The following filter types include expanded sizing capabilities: single-tuned (notch), high-pass damped, 3rd order damped, and 3rd order C-type.
This Paper investigates the impact of power system harmonics on the performance of over-current relays.
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