Hutasoit, Yosep Warman (2016) Studi Koordinasi Proteksi Arus Lebih dari Jaringan Distribusi dengan FCL (Fault Current Limiter) di PT. VICO Indonesia. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Meningkatnya kebutuhan daya listrik di PT. VICO Indonesia
memicu dilakukannya interkoneksi generator untuk menjaga kontinuitas
pelayanan daya listrik. Akibat adanya interkoneksi generator maka arus
hubung singkat semakin besar pada titik gangguan. Hal ini melebihi
device capability peralatan sehingga dapat merusak peralatan listrik di
area gangguan tersebut. Arus gangguan hubung singkat pada salah satu
switchgear utama di PT VICO Indonesia Station #1A melebihi device
capability, dimana rating switchgear 42.19 kA peak, sedangkan arus
hubung singkat 3 fasa ½ cycle sebesar 46.098 kA peak. Karena itu
untuk membatasi arus gangguan hubung singkat tersebut digunakan
suatu Fault Current Limiter (FCL) dan pada tugas akhir ini yang
digunakan adalah Saturated Iron-core Superconducting Fault Current
Limiter (SISFCL). SISFCL ini dipasang pada Bus 35 yang merupakan
sumber arus kontribusi terbesar ketika terjadinya gangguan hubung
singkat 3 fasa ½ cycle pada switchgear Station #1A. Pemasangan
SISFCL dapat mengurangi besarnya arus hubung singkat pada Station
#1A dari 46.098 kA menjadi 37.233 kA peak. Pemasangan SISFCL
menunjukkan bahwa arus hubung singkat semakin berkurang sehingga
mengakibatkan terjadinya perubahan koordinasi proteksi rele arus lebih
pada PT. VICO Indonesia. Namun, peralatan pengaman yang dimiliki
oleh PT. VICO Indonesia masih belum terkoordinasi dengan baik. Dari
hasil plot koordinasi kurva arus waktu kondisi existing diketahui bahwa
terdapat misscoordination dan overlapping. Studi koordinasi dilakukan
untuk pengaman peralatan dan studi koordinasi proteksi akan
ditampilkan dalam bentuk kurva time current characteristic (TCC)
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ncrease demand of electric power at PT. VICO Indonesia so need
the interconnection generator to maintain the continuity of the electric
power service. Due to the interconnection of the generator short circuit
current will be greater at the point of interruption. It can exceed the
device capability of equipment so can damage electrical equipment near
the point of the interruption. Short circuit fault current at one of main
switchgear on PT. VICO Indonesia Station #1A exceed device
capability, maximum value of switchgear is 42.19 kA, while the ½ cycle
short circuit 3 phasa current of 46.098 kA. Therefore to limit the short
circuit current is used Fault Current Limiter (FCL) and in this final
project used Saturated Iron-core Superconducting Fault Current Limiter
(SISFCL). SISFCL will be installed in the Bus 35 which is the current
source of the greatest contribution in the event of ½ cycle short circuit 3
phasa in the switchgear Station #1A. Installation of SISFCL can reduce
the amount of short circuit current on the switchgear Station #1A of
46.098 kA to 37.233 kA peak. Installation of SISFCL shows decreasing
of short circuit current, so causes changes the overcurrent protection
coordination on PT. VICO Indonesia. But in real, safety equipment
owned by PT. VICO Indonesia is still not well coordinated. From the
results of the coordination plot a current curve existing condition is
known that there misscoordination and overlapping. Study overcurrent
protection coordination is used to determine if security system works
well. the result of short circuit analysis and study overcurrent protection
coordination will appear in time current curve characteristic (TCC)
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.319 Hut s |
| Uncontrolled Keywords: | Arus Hubung Singkat, SISFCL, Koordinasi Proteksi, Rele Arus Lebih, Kurva Time Current Characteristic (TCC) |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 21 Sep 2020 06:14 |
| Last Modified: | 21 Sep 2020 06:14 |
| URI: | http://repository.its.ac.id/id/eprint/81999 |
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