Publication: Improving power factor in modern power distribution system using passive filter
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Date
2012-06-01
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Abstract
Modern power distribution system contains linear and non-linear loads. Power factor of modern load consist of phase different factor due to linear loads, and current harmonic factor due to non-linear loads. These combinations of load causing a poor power factor level which can cause higher power losses, damage to equipment, and high cost for non usable power. In this project, passive filter has been appliedto reduce the harmonics and at the same time, improve the power factor level to specified value. The method was applied a designated band-pass passive filter using passive components such as resistor, inductor, and capacitor. This method should be able to reduce the harmonic level to the IEEE 519-1992 standard value which is 20% of harmonic current. By using passive filter, it must also improve the power factor level to 0.85 or more (pf ≥ 0.85). MDB PKEE was chosen as modern power distribution system model for this project. POWERSIM software was used in this project for analyze the equivalent circuit of MDB PPKEE and experiment the implementation of passive filter to see the effectiveness of the passive filters. Lab experiment was done based on the simulation circuit and the power factor is improved from 0.65 to 0.96 by using passive filter with C=360µF and L=3.127mH.