Situmorang, Denny Aprianus (2018) Optimasi Penempatan UPFC pada Sistem Transmisi 275 kVAC Kalimantan untuk Perbaikan Stabilitas Tegangan Menggunakan Gravitational Search Algorithm. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Permintaan daya listrik yang semakin meningkat menyebabkan pusat pembangkit ataupun sistem transmisi dapat mengalami gangguan, sehingga menimbulkan terjadinya pemadaman total. Gangguan tersebut mengakibatkan penurunan stabilitas tegangan serta overload pada saluran sehingga menurunkan tingkat keamanan sistem tenaga listrik. Untuk mengatasi hal tersebut, diperlukan analisis kontingensi. Pada studi ini diusulkan penempatan Unified Power Flow Controller (UPFC) pada sistem transmisi 275 kVAC Kalimantan tahun 2026 sebagai solusi untuk perbaikan stabilitas tegangan dengan kasus kontingensi line outage. Pemodelan statis UPFC sebagai injeksi daya aktif dan reaktif pada bus tegangan sisi kirim dan sisi terima. Untuk mendapatkan penempatan optimal UPFC digunakan metode Voltage Stability Index (VSI) dan Voltage Change Index (VCI). Metode Voltage Stability Index digunakan untuk menentukan peringkat kontingensi. Metode Voltage Change Index digunakan sebagai penempatan optimal UPFC. Optimalisasi kapasitas UPFC menggunakan metode GSA (Gravitational Search Algorithm). Hasil yang diperoleh dari simulasi adalah penempatan optimal UPFC pada bus Kasongan dan bus Palangkaraya dengan nilai VCI tertinggi sebesar 0,02078. Hasil peningkatan aliran daya total sistem dengan metode GSA sebesar 86,85 MW. Hasil tersebut lebih besar dibandingkan metode VCI sebesar 73,94 MW. Hasil perubahan tegangan setelah penempatan UPFC terdapat pada bus 30 dan 36, dimana sebelum penempatan adalah 0,934 p.u dan setelah penempatan menjadi 0,961 p.u.
=============== The electric power demand that more increasing cause the power plant or transmission system can be interrupted, resulting in a blackout. Disturbance leads to decreased of voltage stability as well as overload on line thereby degradation the power system security level. To resolve the problem, a contingency analysis is required. In this study proposed the placement of Unified Power Flow Controller (UPFC) on 275 kVAC Borneo Transmission System in 2026 as a solution for voltage stability improvement with case of line outage contingency. Static modelling of UPFC as an active and reactive power injection on the sending end voltage and receiving end voltage. To obtain the optimal placement of UPFC used Voltage Stability Index (VSI) method and Voltage Change Index (VCI) method. Voltage Stability Index method is used to determine ranking contingency. Voltage Change Index method is used as optimal placement of UPFC. Optimization of UPFC capacity using GSA method (Gravitational Search Algorithm). The results is the optimal placement of UPFC on Kasongan bus and Palangkaraya bus with the highest value of VCI is 0,02078. The result of increase of system total power flow with GSA method equal to 86,85 MW. The result is greater than the VCI method equal to 73.94 MW. The result of the voltage change after the placement of UPFC is found on buses 30 and 36, which before placement is 0.934 p.u and after placement becomes 0.961 p.u.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.317 Sit o |
| Uncontrolled Keywords: | Analisis Kontingensi, Gravitational Search Algorithm (GSA), Unified Power Flow Controller (UPFC), Voltage Stability Index (VSI), Voltage Change Index (VCI) |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Denny Aprianus Situmorang |
| Date Deposited: | 29 Nov 2018 04:26 |
| Last Modified: | 23 Apr 2021 04:50 |
| URI: | http://repository.its.ac.id/id/eprint/52964 |
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