Ardianto, Ahmad and , Umar, S.T., M.T (2018) Analisa Kedip Tegangan Akibat Gangguan Hubung Singkat pada Saluran Distribusi 20 kV di Penyulang Sragen 1. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
PT. PLN (Persero) Rayon Sragen is an electricity company that handles about 20 kV power supply and distribution in Sragen region. The company gets supplies from one of the 150/20 kV transformers, 60 MVA that is on Sragen Substation. Power distribution networks sometimes experience interference, one of them due to short circuit current. Short circuit interruptions in the distribution channel occur with a very short time causing a nominal drop down voltage called a voltage flicker. The usual short-circuit current in the distribution channel is a phase-to-phase, phase to phase, and triple phase short circuit. In order to know the value of blinking voltage due to short circuit current flows required analysis and calculation of short circuit current noise value which is then done blinking voltage analysis at 25%, 50%, 75%, and 100% of the repeater length. Analysis and calculation of the blinking voltage is done in SRAGEN 1 repeater which is one of the repeater in Sragen Substation. The voltage flicking value and the percentage of the normal voltage at the moment of short-circuit ground to 25%, 50%, 75%, and 100% respectively are 285,931∠ 0,2803 ° V (2.476%); 745,425∠0,662 ° V (6.455%); 1451,735∠1,165 ° V (12.57%); and 2635,795∠1,985 ° V (22.82%). The voltage sags and the percentage of the normal voltage at the moment of phase to phase phase short circuit at 25%, 50%, 75%, and 100% respectively are 2662,367∠-0,0047 ° V (13,31%) ; 2139,58∠-0,0026 ° V (10.69%); 1523,63∠-0,00264 ° V (7.6%); and 664,04∠-0,00363 ° V (3,32%). The voltage sags value and the percentage of the normal voltage at the time of short-circuit three-phase interference at 25%, 50%, 75%, and 100% respectively are 1039.37∠16.104 ° V (5.196%); 2415,65∠15,91 ° V (12,078%); 4091,04∠-15,41 ° V (20,455%); and 6579,2∠-14,55 ° V (32,896%).
| Item Type: | Karya ilmiah (Skripsi) |
|---|---|
| Uncontrolled Keywords: | repeater, transformer, short circuit current, voltage sag |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Fakultas Teknik > Teknik Elektro |
| Depositing User: | AHMAD ARDIANTO |
| Date Deposited: | 26 Jul 2018 07:03 |
| Last Modified: | 26 Jul 2018 07:03 |
| URI: | http://eprints.ums.ac.id/id/eprint/64275 |
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