@thesis{thesis, author={Pulungan Akbar Maulana and Yogianto Aloysius Agus}, title ={ANALISIS KEANDALAN SISTEM DISTRIBUSI 20 KV DAN RUGI-RUGI ENERGI TIDAK TERSALURKAN PADA PENYULANG PI.02}, year={2021}, url={http://156.67.221.169/3831/}, abstract={An electric power distribution system must ensure that customers receive a continuous supply of electrical energy, so it is necessary to evaluate the level of reliability of each feeder in the distribution system. This study aims to determine the reliability index of the PI.02 feeder in the form of reliability indexes SAIDI, SAIFI, ENS, and AENS. The SAIDI and SAIFI reliability index calculations use the RNEA method to see the level of reliability of each load point on the PI.02 feeder. The reliability index of ENS and AENS is calculated every month in 2020. From the calculation of SAIDI and SAIFI on the PI.02 feeder, the calculation results are 5.7948 Hours/Customer/Year for SAIDI and 1.5454 Times/Customer/Year for SAIFI, so the PI.02 feeder is said to be reliable because it meets the SPLN 68-2: 1986 standard where the lowest level of reliability is sequentially found at the load point LP 2, LP 37, and LP 20. From the calculation of ENS and AENS on the PI.02 feeder, the calculation results are 26.21 MWh for ENS and 0.01 MWh/Customer for AENS with Rp 38.278.453,42 for economic loss, where the lowest ENS and AENS are in October, September, and March 2020.} }