Saputro, Wahyu Dwi (2015) Menentukan Critical Clearing Time Pada Multi Mesin Berbasis Critical Trajectory Dan Generator Kritis Dengan Mempertimbangkan Gangguan Unbalanced========================== Determining Critical Clearing Time On Multi Machine Based On Critical Trajectori Dan Critical Generator To Consider Unbalanced Fault. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kestabilan transient memiliki peranan penting dalam sistem tenaga
listrik. Pada saat terjadi gangguan, rele pengaman akan terbuka dalam
waktu sekitar 0,2 detik. Akan tetapi hal ini tidak menjamin sistem akan
kembali pada kondisi steady-state. Hal ini disebabkan adanya waktu
pemutus kritis / critical clearing time (cct) pada sistem tenaga listrik. Jika
gangguan diputus kurang dari waktu kritisnya/ critical clearing time (cct),
maka generator akan kembali stabil. Namun, jika gangguan diputus lebih
dari waktu kritisnya/ critical clearing time (cct), maka generator akan
berada pada kondisi tidak stabil. Dalam tugas akhir ini akan dihitung
critical clearing time (cct) pada banyak generator menggunakan metode
energy function untuk menentukan Controlling Unstable Equilibrium
Point (CUEP) dengan mempertimbangkan gangguan hubung singkat
tidak seimbang. Penelitian selama ini hanya mempertimbangkan hubung
singkat tiga fasa ke tanah, sedangkan hubung singkat yang sering terjadi
pada sistem adalah hubung singkat tidak seimbang. Metode energy
function dapat mengetahui generator mana yang mempunyai energi
terbesar yang dijadikan generator kritis, nilai dari generator kritis ini yang
dapat mencapai nilai critical point. Selain itu, metode ini merupakan
metode perhitungan prediksi yang cepat, selisih waktu perhitungan
dengan metode klasik Time Domain Simulation mencapai 116,137 detik
untuk sistem 3 generator 9 bus Fouad Anderson.
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Transient stability analysis has an important role in the operation of
the power system. For example during the interuption, the safety relay
will work to open the breaker in less than 0.2 second. However, this
doesn’t guarantee the system will return to steady state conditions. This
was caused by the critical clearing time (cct) of breaker on the electric
power system. If fault was eliminated before critical clearing time (cct),
generator will be stabilized. But, if fault was eliminated after critical
clearing time (cct), generator will return unstable. In this final task will be
counted the critical clearing time (cct) in multi machine using energy
function to determined CUEP (Controlling Unstable Equilibrium Point)
by considering the unbalanced fault. During this study about transient
stability only consider the symmetrical fault, in real power system
unsymmetrical fault is more often than symmetrical fault. Energy
Function method can see the greatest energy and it be the critical
generator which reach the critical point. Furthermore, this method is fast
prediction method, difference between Time Domain Simulation and this
method about 116.137 seconds for Fouad Anderson system.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.312 Sap m |
| Uncontrolled Keywords: | [10] K. Ariyo, Funso, Electrical Network Reduction for Load Flow and Short-Circuit Calculations using PowerFactory Software, Electrical and Electronic Engineering, Vol. 3 No. 1, 2013, pp. 1-7. doi: 10.5923/j.eee.20130301.01. [11] Ronald G. Harley, Elham B. Makram, Edwin G. duran, The Effects of Unbalanced Network and Unbalanced Faults on Induction Motor Transien Stability, IEEE Transaction on Energy Conversion, Vol 3, No 2, Juni 1988 [12] IEEE Power and Energy Society, Voltage Stability Assessment: Concept, Practices and Tools. |
| 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: | 28 Mar 2018 03:06 |
| Last Modified: | 24 Aug 2018 06:48 |
| URI: | http://repository.its.ac.id/id/eprint/51649 |
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