REAL TIME ANALYSIS OF LOSSES DUE TO IMBALANCES LOADING TRANSFORMER BASED ON LABVIEW Agus Setiawan and Hendro Tjahjono Program Studi Teknik Elektro Institut Sains dan Teknologi Nasional (ISTN) Abstract Research analysis of real time losses due to the imbalance loading on the transformer based labview already done. At this thesis labview as bases in performing measurements and calculations. Parameter used in this study include resistance, current and voltage on each phase both the primary and secondary side of the transformer are burdened balanced and unbalanced by the incandescent lamp load. Labview program development there are two parts, the first part of the front panel interface as informative display waveform and the value of the measure and the second is a block diagram that serves as a data processing input from current transformer and voltage transformer. Total loss on the balance load is 191,14 Watts, Efficiency 55,06%, neutral current 0,0392 A, and the imbalance factor (K) 14,16%. Total loss on the A model of imbalance load is 186,24 Watt, Efficiency 54,36%, neutral current 0,1986 A, and the imbalance factor (K) 46,36%. Total loss on the B model of imbalance load is 192,77 Watt, Efficiency 53,89%, neutral current 0,2202 A, and the imbalance factor (K) 49,76%. The unbalanced load caused the transformer efficiency is getting smaller and neutral current losses greater. Keywords: Losses, realtime, front panel, labview, waveform, transformer, efficiency, unbalanced 1. INTRODUCTION Electric power has become one of the basic human needs. With the development of technology that uses electricity, indirectly humans is very dependent on electricity, both for households and for industrial. Power systems used in Indonesia as a whole is
a three-phase voltage system with alternating current. This three-phase electrical power generated by the three- phase generator which is channeled through the three-phase transmission. Power generated in three-phase systems can be supplied by using a three-phase wire, and thus the amount of power supplied to each phase equal to three- phase power supplied. In fact, the use of power in a certain period of time in an industry not always appropriate or balanced. In an industry sustainability activities of course highly dependent on the reliability and efficiency of the electricity system in the industryIn an industry sustainability activities of course highly dependent on the reliability and efficiency of the electricity system in the industry, to maintain the stability of Noteworthy loading on transformers. Load imbalance between each phase (R phase, S phase, and T phase) causing current to flow in the neutral transformer into losses, with their losses windings and iron core losses add to losses become increasingly large. The transformer losses cause lower efficiency. The greater the imbalance factor, the greater the neutral current emerging.
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- Summer '17
- unbalanced load