Firdaus, David (2016) Simulasi Dan Analisis Stabilitas Transien Dan Pelepasan Beban Pada Sistem Kelistrikan PT Semen Indonesia Pabrik Aceh. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT. Semen Indonesia adalah perusahaan BUMN penghasil
semen terbesar dimana akan melakukan perencanaan pembangunan
pabrik Semen Aceh. Dalam perencanaannya, sistem kelistrikan pada
pabrik Semen Aceh akan menggunakan dua sumber yakni PLN pada
sistem kelistrikan alternatif 1 dan Generator 30 MW dan Generator 2x25
MW pada sistem kelistrikan alternatif 2 sehingga perlu dilakukan studi
stabilitas transien untuk mengetahui kestabilan sistem saat terjadi
gangguan transien. Pada tugas akhir ini difokuskan pada analisis
kestabilan transien meliputi kestabilan tegangan, kestabilan frekuensi dan
kestabilan sudut rotor saat terjadi generator outage, motor starting dan
gangguan hubung singkat. Dari hasil simulasi sistem kelistrikan alternatif
2, menunjukkan bahwa pada kasus lepasnya generator mengakibatkan
frekuensi sistem tidak stabil. Untuk mengembalikan kestabilan sistem,
pada kasus lepasnya generator (841BG02) memerlukan pelepasan beban
2 tahap dengan melepas 25.02% dari total beban (9,97 MW). Saat kasus
hubung singkat pada level tegangan 0,4 kV tidak terlalu berpengaruh pada
kestabilan meskipun mengakibatkan tegangan turun sesaat dan dapat
kembali pada keadaan semula. Selain itu pada kasus hubung singkat
dilevel tegangan 6,3 kV, setiap nilai level tegangan akan turun setelah
terjadi gangguan hubung singkat 3 fasa pada level tegangan 6,3 kV,
namun setelah CB5-831MV081 open maka nilai tegangan sesaat menjadi
108,359% dan akan kembali steady state pada 97,09%. Pada kasus motor
starting, penurunan tegangan terendah sempat mencapai titik terendah
pada 65,79% dan stabil pada 91,456%.
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PT. Indonesia Cement is the largest cement producer stateowned
company which will carry out the development planning cement
factory in Aceh. In planning, the electrical system in Aceh cement plant
will use two sources is PLN on the electrical system of alternative 1 and
Generators 30 MW and 2x25 MW Generator on the electrical system of
alternative 2 so that the transient stability studies need to be done to
determine the stability of the system during a transient interruption. In this
thesis focused on the transient stability analysis includes voltage stability,
frequency stability and the stability of the generator rotor angle during an
outage, the motor starting and short circuit. From the simulation results
of alternative electrical system 2, showed that in case of the loss resulting
frequency generator system is unstable. To restore the stability of the
system, in case of loss of the generator (841BG02) requires two stages of
load shedding by removing 25.02 % of the total load (9.97 MW). When
the case of short circuit at a voltage level of 0.4 kV was not affecting the
stability although the resulting voltage drops momentarily and may return
to its original state. Also in the case of a short circuit at the level of the
voltage of 6.3 kV, each rated voltage level will drop after three -phase
short circuit at a voltage level of 6.3 kV, but after CB5-831MV081 open
the instantenous voltage value of 108.359 % and will be back steady state
at 97.09 %. In the case of starting motors , low voltage drop had reached
its lowest point at 65.79 % and steady at 91.456 %
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.319 21 Fir s |
| Uncontrolled Keywords: | kestabilan transien, gangguan transien, pelepasan beban. |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves). |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | ansi aflacha |
| Date Deposited: | 24 Feb 2020 08:00 |
| Last Modified: | 24 Feb 2020 08:00 |
| URI: | http://repository.its.ac.id/id/eprint/75143 |
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