Studi Kelayakan Sistem Kelistrikan Akibat Penambahan PLTS 3 MW Pada PT. Badak NGL

Muhammad, Faris Dien (2018) Studi Kelayakan Sistem Kelistrikan Akibat Penambahan PLTS 3 MW Pada PT. Badak NGL. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia memiliki potensi energi matahari cukup tinggi. Karena sinar matahari selalu ada sepanjang tahun dengan rata-rata intensitas cahaya matahari selama 6 sampai 8 jam tiap harinya. Sebagai usaha dari PT. Badak NGL untuk membantu pemerintah dalam mengurangi penggunaan energi fosil, maka PT. Badak NGL membangun PLTS 3 MW sebagai langkah penggunaan energi baru terbarukan. Untuk memenuhi ketentuan rencana pembangunan PLTS pada PT. Badak NGL, maka diperlukan studi kelayakan. Dalam pelaksanaan studi kelayakan, terdiri dari beberapa hal penting yang harus diperhitungkan. Diantaranya mengenai Power Study Analysis (PSA) yaitu load flow, hubung singkat, kestabilan transien, koordinasi proteksi, dan analisis ekonomi. Untuk menyelesaikan permasalahan tersebut digunakan software ETAP dan PVsyst dalam membantu analisa dan simulasi. Hasil dari simulasi menunjukkan bahwa penambahan PLTS 3 MW dapat mengurangi produksi listrik oleh generator ketika terdapat cahaya matahari. Nilai tegangan pada bus utama 98.32% sampai 100% dan cos phi 80.5% sampai 99.7% menandakan sistem dalam kondisi normal dan masih cukup baik. Rating peralatan pengaman eksisting masih mampu mengamankan arus hubung singkat, dikarenakan arus yang disumbangkan oleh PLTS relatif kecil. Peralatan pengaman baru hanya terpasang pada feeder yang menghubungkan PLTS baru dengan sistem. Respon frekuensi, tegangan, dan sudut rotor ketika mengalami gangguan akibat PLTS trip dan generator outage masih mampu menjaga kestabilannya. Produksi PLTS 3 MW menghasilkan daya sebesar 3.882 MWh/tahun. Dengan biaya 0,23 US$/kWh dan akan mengalami balik modal pada tahun ke-11 dengan masa angsuran selama 15 tahun.============== Indonesia has a quite high level of solar energy potential due to its tropical climate—which most of the area receives enough intensity of solar radiation every year with the average daily radiation around 6-8 hours per day. Regarding to this matter, PT. Badak NGL is fully committed to supporting the government’s effort to reduce the usage of fossil fuels and to promote the usage of renewable energy instead. Hence, PT. Badak NGL decided to build the 3 MW solar power plant. In order to assess the practicality of building its solar power plant, PT. Badak NGL requires feasibility studies such as PSA (Power Study Analysis) that consists of load flow, short sircuit, transient stability, protection coordination, and economic dispatch. Software tools such as ETAP and PVsyst are also needed to deepen the analysis and simulation. The simulation result indicates that the 3 MW solar power plant setup has its effects on reducing the production of electric power generation when it’s hit by sun’s rays. The peak value of voltage on the bus signifies that the system is working fine—it increases from 98.32% up to 100% and reaches the cos phi of 80.5% up to 99.7%. Since the solar power plant shares relatively small amount of electric current, it is possible for the rating of the existing circuit protection device to secure the short circuit current. New protection device is only installed on the feeder which connects new solar power plant with the system. The stability of frequency response, voltage, and rotor angle is also secured despite the trip in solar power plant and generator outage. The 3 MW solar power plant generates power up to 3.882 MWh per year. It costs $0,23 /kWh and is estimated to reach a break-even point in 11th year with 15 years-tenure of installment.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Studi kelayakan, PLTS, PSA, Feasibility study
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD30.24 Feasibility studies. Feasibility appraisals
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive.
Divisions: Faculty of Electrical Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: muhammad faris dien
Date Deposited: 16 Aug 2018 02:22
Last Modified: 16 Aug 2018 02:22
URI: http://repository.its.ac.id/id/eprint/52377

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