Safitri, Muidhotus and , Aris Budiman, S.T., M.T. (2023) Penggunaan Rele Line Current Differential sebagai Pengganti Pengaman Utama pada Penghantar Bay Rembang 2 Gardu Induk 150kV Semen Indonesia Rembang. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
Every component of the electric power system is needed by a system that can function to protect against disturbances. Relay is an electronic component that is usually in the form of a switch and functions to control an electrical circuit. The line current differential (LCD) relay is a main component in the conductor as a protection system regardless of the impedance value. This study aims to provide a solution regarding the design or placement of a line current differential (LCD) relay on the Rembang-Semen Indonesia conductor as the main safeguard at the substation and the results of this study will be simulated using ETAP 12.6.0 software regarding the installation of a new relay when the relay operate. The method used is conducting research and direct observation when adding a relay at the 150kV Semen Indonesia Rembang substation. The next step is to process the data mathematically, then the design or installation of a line current differential (LCD) relay will be simulated in the ETAP software. The secondary CT ratio used is 2000/5 A, this CT is obtained from the results of field tests and is applied to simulations. The result of the setting value for the current line current differential (Is1) is 0.09025 Amp in the calculation while the field test results are 1 Amp. The results of the calculation of the only line current differential relay setting (Is2) are 10 Amp and the results are the same as the field tests. The percent slope 1 value is 12.3%, while the field test results are 40%, so the difference is quite a lot. The percent slope 2 value is 24.6% in the calculation and includes half of the field test results. The results of the simulation when it is normal, there is no disturbance at the substation, whereas when it is running and given an internal disturbance, there is still no trip on the CB. CT and OCR relay were added to the Rembang 2 delivery bay and when running, there was a disturbance, the result was a trip on CB, which means that when the LCD relay works together with the OCR relay, there is an internal disturbance, so it can detect a disturbance and instruct CB to work.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | conductors, substations, protection systems, relay line current differential (LSD). |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK02 High Voltage |
| Divisions: | Fakultas Teknik > Teknik Elektro |
| Depositing User: | MUIDHOTUS SAFITRI |
| Date Deposited: | 06 Feb 2023 04:37 |
| Last Modified: | 06 Feb 2023 04:37 |
| URI: | http://eprints.ums.ac.id/id/eprint/107974 |
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