Harmonic Mitigation Using Shunt Hybrid Power Filter in Departement of Electrical Engineering Universitas Negeri Malang Electrical Power System

Power quality is interesting topic to discuss, because in the industry, buildings and electrical power systems there are always problems with power quality. For example Harmonic always arises due to nonlinear loads. Examples of nonlinear loads are materials from semiconductors and electronic devices. In industry, household, and electric power systems always use electronic devices that become contributors to harmonics. The object of the research is Departement of Electrical Universitas Negeri Malang. In the department there are 5 orders that value Voltage Individual Harmonic Distortion (VIHD) of more than 5%, the orders are 5th, 7th, 11th, 13th, and 17th. Generally one filter just can mitigate one dominant or highest harmonic orde. But it is difficult to mitigate harmonics if there are high 5 orders simply by using a passive filter. This article will discuss harmonic mitigation by combining several passive filters and capacitor banks on one bus. The goal is to optimize harmonic filtering so that it can reduce the value of Total Harmonic Distortion (THD) to be very small and simultaneously improve the power factor. For comparison, the scenario used for the first experiment is a harmonic filter using only capacitor banks. The second scenario is mitigating harmonics by using several passive filters. While the third scenario uses both to mitigate harmonics or better known as Shunt Hybrid Power Filter (SHPF). The results of the scenario are scenario 3 with SHPF capacitor banks and some passive filters can mitigate harmonics best than other scenarios. Scenario 1 THD 10.98%, scenario 2 THD 4.69%, and scenario 3 THD 3.94%.