Studi Koordinasi Proteksi Pada Sistem Kelistrikan PT. Semen Tonasa

Muhammad, Nadir (2014) Studi Koordinasi Proteksi Pada Sistem Kelistrikan PT. Semen Tonasa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
2210100062-Undergraduate-Theses.pdf - Published Version

Download (2MB) | Preview

Abstract

PT. Semen Tonasa sebagai salah satu pabrik semen terbesar di kawasan Indonesia Timur melakukan rencana penambahan pabrik baru Tonasa V dan generator baru 2 x 35 MW untuk menunjang proses produksi. Dengan penambahan beban dan pembangkit muncul permasalahan pada sistem kelistrikannya, yaitu sering terjadi padam total (blackout) pada saat terjadi gangguan, sehingga kontinuitas daya terganggu. Melalui tugas akhir ini dilaksanakan studi koordinasi proteksi pada PT. Semen Tonasa yang tepat dalam mendeteksi dan mengisolir gangguan sehingga tidak mengganggu sistem yang berjalan dan mencegah kerusakan peralatan listrik. Dari hasil plot koordinasi kurva arus waktu kondisi existing dapat diketahui bahwa terdapat misscoordination dan overlaping. Melalui hasil analisis dan perhitungan manual direkomendasikan penyetelan pick up rele arus lebih dan penyetelan grading time rele. Rele yang perlu disetel ulang adalah rele arus lebih gangguan fasa (overcurrent relay) dan rele arus lebih gangguan tanah (ground fault relay). Setting rele gangguan tanah untuk trafo distribusi 6.3kV dengan sistem pentahanan NGR 400A mengaktfikan setting 50G dan 51G, oleh karena itu untuk rele arus lebih gangguan tanah direkomendasikan penggunaan setting rele 51G dengan kurva definite karena besar gangguan satu fasa ke tanah merupakan gangguan hubung singkat dan nilainya sesuai dengan NGR. ================================================================================== PT . Semen Tonasa as one of the largest cement plant in the eastern of Indonesia is planning to add new plants Tonasa V and new generator 2 x 35 MW to support the production process. With the addition of load and generation, problems occur in the electrical system, the blackout often occur during a fault, so the continuity of power is being interrupted. Through this final project carried out the correct studies on the coordination of electrical system protection in order to detecting and isolating the fault so the running system is not disturbed and prevent damage to electrical equipment. The results of time current curve in exisiting conditions can be seen that there are misscoordination and overlapping. Through the analysis and manual calculation result, give the recommendation to reset pick up setting and grading time of overcurrent relays. Relays that need to be reset are phase fault overcurrent relays and ground fault relay. Ground fault relay setting for distribution transformators 6.3 kV with grounding system NGR 400A activate 50G and 51G setting, so that setting of ground fault relays is recommended to use 51G with definite curve because the single line to ground fault current is a short circuit fault and matching to the NGR value.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.317 Muh s
Uncontrolled Keywords: Gangguan; koordinasi proteksi; rele arus lebih gangguan fasa; rele arus lebih gangguan tanah; Fault; coordination of protection; overcurrent relay; ground fault relay
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity)
Divisions: Faculty of Industrial Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Anis Wulandari
Date Deposited: 26 May 2017 08:02
Last Modified: 26 May 2017 08:02
URI: http://repository.its.ac.id/id/eprint/41387

Actions (login required)

View Item View Item