Langlang Gumilar, Mokhammad Sholeh, Arya Kusumawardana
Currently research in the field of renewable energy is developing. Renewable energy has been widely applied as Distributed Generation (DG). DG can help the grid to fulfill power needs for consumers. However, DG's presence in the distribution system is causing power quality problems. The problem is harmonic. Each DG is connected to an inverter to change from the ac to dc system and controls the stability of the DG current and voltage to match the grid voltage rating. The more DGs installed, the more inverters installed. Besides that, the cause of harmonic is nonlinear load too. Harmonic THD and TDD values above 5% need to be minimized to below 5%, so that the grid can operate safely continuously. The purpose of this paper is to minimize harmonic distortion with the Harmonic Power Sharing method and Virtual Impedance. Harmonic power sharing is the same as current sharing. This means making each current line on the DG before entering the Point of Common Coupling (PCC). There are two scenarios used in the simulation. The first scenario uses Harmonic power sharing without virtual impedance. The second scenario uses Harmonic power sharing with virtual impedance installed on each DG line. The simulation results are the existence of virtual impedance can reduce harmonic distortion. THD, TDD, IHD-V, and IHD-I values have decreased significantly. © 2020 IEEE.
Department O F Electrical Engineering, Universitas Negeri Malang, Malang, Indonesia
