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

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. ============================================================ 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 > (S1) Undergraduate Theses
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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