Belana, Rian (2021) Koordinasi Proteksi PT. Pertamina RU V Balikpapan. Studi Kasus Blackout Kegagalan Koordinasi Proteksi Pada Gangguan Feeder Plant SS70A. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Koordinasi proteksi pada suatu sistem kelistrikan di industri sangatlah penting. Karena mencegah resiko terjadinya kerusakan pada peralatan akibat adanya gangguan abnormal pada sistem kelistrikan. Proteksi pada industri harus terkoordinasi dengan baik agar selektif menentukan titik dimana gangguan muncul dan memutuskan rangkaian dengan membuka breaker terdekat. Kasus blackout atau shutdown dibeberapa area pada PT. Pertamina RU V Balikpapan disebabkan oleh oleh gangguan abnormal disalah satu feeder yaitu terjadinya arus hubung singkat. Karena adanya gangguan tersebut mengakibatkan voltage sag yang kemudian memicu lepasnya coil kontaktor motor untuk bekerja di feeder tersebut. Selanjutnya peralatan proteksi di area tersebut mengalami kegagalan koordinasi untuk mengamankan gangguan tersebut, maka diperlukan evaluasi terhadap kondisi sistem kelistrikan eksisting yaitu dengan cara resetting peralatan proteksi PT. Pertamina RU V Balikpapan pada plant SS70A, setelah ditemukan cara mengatasi voltage sag agar tidak terlalu besar drop tegangannya, yaitu dengan cara menambahkan trafo isolasi di feeder tersebut. Sehingga dapat ditemukan parameter rating peralatan proteksi guna menyempurnakan sistem koordinasi proteksi serta melakukan analisa transien stability untuk mengetahui kondisi voltage sag saat terjadi gangguan.
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Protection coordination in an electrical system in industry is very important. Because it prevents the risk of damage to equipment due to abnormal disturbances in the electrical system. Protection in the industry must be well coordinated in order to selectively determine the point where disturbances occur and break the circuit by opening the nearest breaker. Blackout case at PT. Pertamina RU V Balikpapan is caused by a failure of coordination in the protection of its electrical system, which was initially caused by an abnormal disturbance in one of the feeders, namely the occurrence of a short circuit current. Due to this disturbance, it causes a voltage sag which then triggers the release of the motor contactor coil to work on the feeder. Furthermore, the protection equipment in the area has failed to coordinate to secure the disturbance, so it is necessary to evaluate the condition of the existing electrical system, namely by resetting the protection equipment of PT. Pertamina RU V Balikpapan at the SS70A plant, after finding a way to overcome the voltage sag so that the drop voltage would not be too large, by adding an isolation transformer to the feeder. So it can be found the protection equipment rating parameters to improve the protection coordination system and perform transient stability analysis to determine the voltage sag condition when a disturbance occurs.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Koordinasi Proteksi, Voltage sag Protection Coordination, Voltage sag |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2551 Electric transformers. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays. Protective relays--Security measures. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves). |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Rian Belana |
| Date Deposited: | 18 Aug 2021 04:08 |
| Last Modified: | 18 Aug 2021 04:08 |
| URI: | http://repository.its.ac.id/id/eprint/87517 |
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