Kumara, Danar Tri (2016) Analisa Stabilitas Transien Pada Sistem Transmisi Sumatera Utara 150 kV-275 kV Dengan Penambahan PLTA Batang Toru 4 x 125 MW. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem kelistrikan Sumatera Utara yang dipasok dengan
menggunakan sistem Transmisi 150 kV dan 275 kV merupakan sistem
transmisi dengan pusat beban terbesar di Sumatera. Dalam upaya
memenuhi kebutuhan listrik, sesuai dengan RUPTL, Sistem Transmisi
Sumatera Utara akan mengoperasikan PLTA Batang Toru dengan
kapasitas 4 x 125 MW pada tahun 2020. Karena potensi sumber energi
yang cukup besar di Sumatera Utara adalah tenaga air dan panas bumi.
Dengan penambahan PLTA Batang Toru 4 x 125 MW, perlu dilakukan
studi kestabilan transien untuk mengetahui kestabilan sistem saat terjadi
gangguan transien. Dari hasil simulasi menunjukkan bahwa case
lepasnya generator, lepasnya satu saluran dan saluran ganda tidak
menyebabkan sistem keluar dari batas stabil. Karena ketika generator
lepas, daya supply yang hilang hanya 5-8% dari total pembangkitan.
Begitu juga dengan kasus single pole auto reclosing dengan waktu
Circuit Breaker kembali tertutup sebesar 500 ms setelah gangguan, hasil
respon sudut rotor, frekuensi dan tegangan menunjukkan sistem masih
stabil. Pada penentuan waktu pemutusan kritis (CCT), nilai CCT pada
sistem 2018 dapat ditemukan pada 120 ms – 140 ms (batas rekomendasi
CCT sistem besar). Sedangkan pada sistem 2020 tetap dalam keadaan
stabil ketika terjadi gangguan hubung singkat 3 fasa . Sehingga
penentuan CCT (Critical Clearing Time) melebihi dari batas
rekomendasi nilai CCT untuk sistem besar.
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North Sumatra electrical systems are supplied using 150 kV - 275
kV transmission system with the largest load in Sumatra. To meet the
demand for electricity, according to the RUPTL, North Sumatra
Transmission System will operate the power plant Batang Toru with a
capacity of 4 x 125 MW by the year 2020. Because of the potential
source of considerable energy in North Sumatra are hydropower and
geothermal. With the addition of hydropower Batang Toru 4 x 125 MW,
transient stability studies need to be conducted to determine the stability
of the system during a transient interruption. From the simulation results
show that the loss of the generator case, the loss of a single channel and
dual channel does not cause the system out of the stable boundary.
Because when the generator is off, the power supply is lost only 5-8% of
the total generation. So the case with a single pole auto reclosing Circuit
Breaker closed again time 500 ms after the disturbance, response results
rotor angle, frequency and voltage indicates the system is still stable. On
the timing of the termination of the critical (CCT), the value of CCT on
the system in 2018 can be found at 120 ms - 140 ms (the limit on large
systems CCT), but in 2020 the system remains in a stable state when the
three phase short circuit. So the determination of CCT (Critical Clearing
Time) exceeds the limit on the value of CCT for large systems
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.319 21 Kum a |
| Uncontrolled Keywords: | kestabilan transien, generator lepas, saluran lepas, single pole auto reclosing, critical clearing time. |
| 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: | 20 Feb 2020 03:34 |
| Last Modified: | 20 Feb 2020 03:34 |
| URI: | http://repository.its.ac.id/id/eprint/75070 |
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