@thesis{thesis, author={RIO AHMAD AJI and Susanto Djoko}, title ={KAJIAN KEANDALAN SISTEM PADA JARINGAN TEGANGAN MENENGAH 20 kV PT.PLN (Persero) AREA TELUK NAGA TAHUN 2017}, year={2018}, url={http://156.67.221.169/974/}, abstract={PT.PLN (Persero) is a government owned corporation supplying electricity to the community. PLN must deliver electricity efficiently and with a good quality of service. An analysis of blackout is needed to reduce the number of outages and customer complaints. A reduction in percentage results in a better energy transfer. SAIDI (System Average Interruption Duration Index) will increase reliability of the subsystem, whether components or equipments. While SAIFI (System Average Interruption Frequency Index) will results in better overcoming of blackouts and reduces the blackout time. At this thesis we get the value results for SAIDI = 1,569 hour/year/consumer and SAIFI = 0,754 blackout/year/consumer. This value results declared reliably because has fullfilled SPLN 59:1985} }