Third Harmonic Filter Design in Mitigating High Current At the Generator Neutral

Harmonic is commonly known power quality problem which caused by non-linear load. Nevertheless, harmonic was also found at the synchronous generator instead of at the load. The effect of the triplen harmonic to the generator neutral is high current which lead to high temperature of the component at the generator neutral. Recent researches had identified the major component of the triplen harmonic is third harmonic which initiated by the synchronous generator itself. There are numerous techniques to reduce the effect of harmonic in power system network. By installing harmonic filter is one of the techniques to mitigate the harmonic current. A study about installing harmonic filter at the generator neutral had been introduced to counter this arising issue. The objectives of this study are to study the various harmonic filters used in mitigating the third harmonic current and to design harmonic filter that can reduced the third harmonic current at generator neutral and validate the modelling with experimental values