Keywords
SAIDI
SAIFI
Power Loasses.
Abstract
Electricity is vital, depending on generator, transmission, and distribution systems. Transformer damage at substations (GI) disrupts supply, necessitating load transfer from Baddoka to Ujung Pandang. This study assesses feeder performance pre and post-transfer, evaluating reliability (SAIDI and SAIFI) and feeder losses for the receiving feeders. In this research, feeder reliability is evaluated using SAIDI and SAIFI indices. The method involves calculating pre-transfer indices based on feeder outage history and post-transfer indices using the RIA method. Furthermore, calculations for feeder loss are carried out. before and after the transfer using conventional methods for medium-voltage network channels and distribution substations. The aim is to measure energy supply reliability and efficiency in electricity distribution. In the pre-transfer analysis, Ujung Pandang feeder had a SAIDI of 3.6956 hours/customer/year and a SAIFI of 8.7952 times/customer/year, while Baddoka feeder had a SAIDI of 3.0073 hours/customer/year and a SAIFI of 8.5487 times/customer/year. Ujung Pandang had a 1.85% power loss, and Baddoka had a 1.78% loss. After transferring the full load from Baddoka to Ujung Pandang (using RIA), SAIDI increased to 31.1399 hours/customer/year, SAIFI decreased to 6.6933 times/customer/year, and power loss slightly rose to 1.98%. Before the transfer, Baddoka met the 1986 SPLN No. 68-2 standard with a SAIDI of 21.09 hours/customer/year and SAIFI of 3.2 times/customer/year. Ujung Pandang's SAIDI complied, but power loss met the 1987 SPLN No. 72 standard. Post-transfer, Ujung Pandang needed maneuvers to Marannu and Sudiang under GI Daya Baru and Baddoka under GI Kima to meet reliability and power loss standards, resulting in SAIDI 12.1281 hours/customer/year, SAIFI 3.0756 times/customer/year, and power loss 2.02%References
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