Optimalization harmonic shunt passive filter using detuned reactor and capacitor bank to improvement power quality in hybrid power plant

Abstract

In electric power systems generally not only consists of one type of power plant, but consists of various types of power plants such as power plants with fossil fuel sources and renewable energy sources. To utilize wind power plants and solar panels, storage media such as batteries are needed. The charging and discharging process requires a power electronic device. As is known that power electronic devices consist of materials or nonlinear loads made of semiconductor materials that can cause harmonics in the electric power system. This research was conducted in the laboratories of the G4 Building, Department of Electrical Engineering. The G4 building is also interconnected with grids, wind power plants, solar panels and backup generators. The combination of all nonlinear loads creates high harmonics. To mitigate harmonics and reduce Total Harmonic Distortion-Voltage (THD-V) value a harmonic filter is needed. Passive harmonic filters have a disadvantage, namely that one passive harmonic filter can only mitigate one dominant order of harmonics and the value is predetermined. This article will discuss optimalization of passive shunt filters using detuned reactors and capacitors bank or can be called Shunt Hybrid Power Filters (SHPF). The purpose of optimalization is to improve the performance of shunt passive filters to be more effective and efficient in mitigating harmonics with THD-V values that are fluctuate and dominant harmonic orders that change as well as in harmonic active filters. In the research method, 3 scenarios will be made as comparison in the final results. From the test results in scenario 1, optimalization shunt passive filter using detuned reactor and capacitors bank (SHPF) was able to reduce THD-V from 16,65% to 2,61% with 5th order dominant. In scenario 2, the SHPF is able to reduce the THD-V from 19,74% to 3,04% with the 7th order dominant. In scenario 3, SHPF was able to reduce the THD-V from 28,04% to 3,36% with an 11th order dominant. From all the simulation results, it can be concluded that optimalization shunt passive filter using detuned reactors and capacitors bank is still able to mitigate harmonics with high THD-V values and dominant orders that change even though the parameters of SHPF are the same as the previous scenarios. Improved shunt passive filter harmonic performance after being optimized with detuned reactors and capacitors bank can approach the performance of harmonic active filters.