No abstract

Power loss problems in Malang transmission line system can occur due to high voltage drops in a long distance transmission lines and can be attributed to large loads resulting to high current flowing in the lines. Not only this setback can contribute to the decrease power transfer in the demand side, but it also can impair the conductor line over time owing to the excessive heats. To mitigate this problem, new networks or current distribution scheme are offered to reduce the excessive power loss and additionally to meet the load demands. This study aims to investigate and calculate the power losses in the transmission system before and after the networks are employed. The mathematical analysis of the power loss is presented in this paper and subsequently verified through simulation. The data used in this study are obtained from the State Electricity Utility (PLN) of Malang Raya. The results of this study indicate that before the addition of the network, Malang Transmission System experienced a significant power loss that is equal to 598.2 kW in six lines, including Bus 1 – LW at 125.5 kW, Bus 1 – PKS 164 kW, PKS – KA 1 kW, LW – KA 12.1 kW, KA – SKL 50 kW, and STM – KA 245.6 kW. After the addition of four new networks, the power loss is considerably reduced to 355.7 kW in 10 lines, including Bus 1 – LW 67.9 kW, Bus 1 – PKS 52.6 kW, PKS – KA 1.6 kW, LW – KA 0.3 kW, SKL – KA 0.1 kW, STM – KA 88.3 kW, LW – SKL 0.4 kW, PKS – LW 0.2 kW, STM – PKS 57.2 kW, and STM – SKL 87.1 kW.