Performance Shunt Hybrid Power Filter and Line Reactor Methode for Harmonic Mitigation in 5 Dominant Order IHD-V

Abstract

Power quality problem such as harmonics cannot be separated in each component of electric power system. Harmonics are caused by nonlinear loads that are connected to an electric power system. An example of a nonlinear load is a load made of semiconductor materials such as diode, mosfet, transistor and others. This research was conducted at G4 Building Laboratory, Department of Electrical Engineering. Building G4 has 7 laboratories. Each laboratory has many nonlinear loads that are often used when practicing. The harmonic measurement results are THD-V (Total Harmonic Distortion-Voltage) 28,8%. There are 5 dominant orders above the 5% standard, that are 5th, 7th, 11th, 13thand 17thorder as IHD-V (Individual Harmonic Distortion-Voltage). Beside voltage waves THD-V and IHD-V, harmonic disturbances will be analyzed for the current wave as well as IHD-I (Individual Harmonic Distortion-Current). Generally one passive filter can only reduce IHD (Individual Harmonic Distortion) 1 order only. In this study, using parallel 5 shunt filter passive to mitigate 5 harmonic orders. To optimize the passive shunt filter, it will be combined with line reactor, which can then be called Shunt Hybrid Power Filter (SHPF). For comparison, several cases will be carried out, such as first harmonic mitigation only uses line reactor, the second scenario uses parallel 5 passive shunt filters to mitigate harmonics, while the third scenario uses combination of parallel 5 passive shunt filters and line reactors method. The results of scenario 1 using line reactor can reduce THD-V from 28.85% to 26.75%. Scenario 2 decreases THD-V from 28.8% to 4.44%. Scenario 3 combination 5 passive shunt filters and reactor line can reduce THD-V from 28.8% to 3.92 % %. After seeing the results of all scenarios it can be concluded that the performance results of scenario 3 are the best in reducing the THD-V.