Current harmonic related power quality problems have become an important topic in recent years. The increased use of modern power electronics devices has changed the character of the loads on public utility grids from linear into more and more nonlinear. It results in a rising level of voltage distortion and reduced public power supply quality. Harmonic filters are important devices to reduce the level of harmonics injected into the public power lines. This paper presents a special LabVIEW based software intended for the education of harmonics filtering related topics.