Studi Koordinasi Proteksi Arus Lebih dari Jaringan Distribusi dengan FCL (Fault Current Limiter) di PT. VICO Indonesia

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) ============================================================================================ 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: https://repository.its.ac.id/id/eprint/81999

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