Analisis Stabilitas Transien Dan Mekanisme Pelepasan Beban Di PT. Newmont Nusa Tenggara

Kurniawan, Ilyas (2015) Analisis Stabilitas Transien Dan Mekanisme Pelepasan Beban Di PT. Newmont Nusa Tenggara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT Newmont Nusa Tenggara merupakan industri yang bergerak di bidang pertambangan.Untuk itu sangat diperlukan sistem kelistrikan yang mampu mendukung kelancaran proses produksi .Dalam memenuhi kebutuhan kelistrikan PT Newmont Nusa Tenggara memiliki pembangkit yang terdiri dari 4 unit generator uap dengan tiap generator berkapsitas 34 MW, 9 unit mesin diesel berkapasitas 5 MW dan beban harian rata – rata 110 MW. Mengingat mulai dari di dirikan hingga saat ini stabilitas transien pada plant belum dianalis secara mendalam, sehingga perlu dilakukan studi kestabilan transien untuk mengetahui keandalan sistem saat terjadi gangguan transien. Pada tugas akhir ini analisis difokuskan pada analisis kestabilan transien jika terjadi pelepasan beban, generator outage, motor starting, dan hubung singkat. Dari hasil simulasi menunjukkan bahwa lepasnya salah satu atau dua generator dari emapat unit generator beroperasi dengan pembebanan desain beban penuh(~112.177MW) menyebabkan perlu adanya skema load shedding, karena frekuensi dibawah standar operasi. Selain itu, gangguan hubung singkat pada bus tegangan tinggi 150 kV menyebabkan sistem blackout untuk itu dilakukan kliring agar sistem kembali stabil.Dan pada tegangan menengah 11kV,6.6kV dan 2.2 kV menyebabkan frekuensi turun sehingga harus dilakukan kliring atau pelepasan beban sesaat agar sistem kembali stabil. Dalam kasus short circuit tegangan 33kV perlakuan kliringi gagal mengembalikan sistem stabil sehingga bus yang mengalami shor circuit harus dilepas dari sistem. Motor starting, ketika akan melakukan starting motor 50-PUM1 1500kW direkomendasikan dilakukan setting droop awal pada generator coal plant saat 4 unit generator running. =============================================================================================== PT Newmont Nusa Tenggara is in the mining industry. Indispensable to the electrical system that is able to support the production process. To meet the electricity needs of PT Newmont Nusa Tenggara has a plant consisting of 4 units each steam generator with 34 MW generator berkapsitas, 9 units of machines diesel with a capacity of 5 MW and average daily load - average 110 MW. Given the start of today was founded transient stability of the plant has not been analyzed in depth, so that the transient stability studies need to be done to determine the reliability of the system during a transient disturbance. In this final analysis focused on transient stability analysis in case of load shedding, generator outage, motor starting and short circuit. From the simulation results show that the loss of one or two generators of emapat generator units operate with a full load design load (~ 112.177MW) led to the need for load shedding scheme, since the frequency of substandard operations. In addition, the short circuit at 150 kV highvoltage bus causing a blackout system for clearing that was done on the system back stabil.Dan medium voltage 11kV, 6.6kV and 2.2 kV causes the frequency down so it must be done clearing or load shedding while to make the system stable again . In case of short circuit voltage of 33kV kliringi treatment failed to restore stability so that the bus system is experiencing a shor circuit must be removed from the system. Motor starting, when starting the motor will perform a 50-PU-M1 1500kW recommended setting droop done early on when the generator coal plant running four generator units.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.319 21 Kur a
Uncontrolled Keywords: kestabilan transien, gangguan besar, pelepasan beban.
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: Mr. Tondo Indra Nyata
Date Deposited: 22 Jun 2017 03:23
Last Modified: 22 Jun 2017 03:23
URI: http://repository.its.ac.id/id/eprint/41818

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