Harmonics reduction using LLCL filter on residential loads 450 VA and 900 VA in Central Java-Indonesia

The quality of electrical power basically is all issues relating to the electrical power, including deviation of the normal condition of voltage, current and frequency. The electronic equipment currently used in households generate significant current harmonic distortion. The objective of this research is to map and reduce the harmonic distortion on household electricity customers 450 VA and 900 VA. This research was conducted in several areas in Magelang City, Temanggung Regency, Purworejo Regency, Salatiga City, Karanganyar Regency, Banjarnegara Regency, Semarang Regency and Pekalongan Regency of Central Java randomly, using loads that are used for daily household. The average percentage of THDi for an installed power of 900 VA is 37.94 percent, while customers with 450 VA percentage of THDi is 49.84 percent. A group of households in a network with industry, the average percentage of THDi of installed power capacity of 900 VA is 38.94 percent and for the customer with 450VA has percentage THDi value of 41.29 percent. The results of measurement, percentage THDi on household electricity customers, then performed a simulation with PSIM software. Electric power source used and load voltage 220 V household appliances analogous to a full wave rectifier with resistive load of 100 ohms and 28 uF capacitor. Passive filter used is the type LLCL. The simulation resulted from using LLCL filter tuned to the harmonic order 3 with a frequency of 150 Hz to get a reduction of percentage THDi from 45.6204 percent dropped to 9.1444 percent with 16 volt voltage drop.