Implementation of Passive Filters for Harmonics Reduction

In recent years there has been widespread use of power electronics devices and nonlinear elements in rectification and switchgear applied to various areas of power system. Power systems contain levels of harmonics which can no longer be ignored by engineers, planners, energy conservationists and economists due to the presence of non-linear loads. A simulated case study of distributed system in IEEE 519 is being used here for harmonic reduction. From the simulated case study, the network was investigated using MiPower software package. The results were compared with IEEE standards 519 and it was found that MiPower software is the preferred package for power system harmonic analysis. The harmonic reduction solution chosen was to design a passive filter to decrease the distortion by shifting the resonance point of the network. This paper includes the method to design the passive filter and its impact on efficiency and energy usage.