Studi Skema Pertahanan Sistem Interkoneksi Sumatera Mempertimbangkan Lepasnya Saluran Transmisi Backbone 275 kV dan 150 kV

Darmayasa, Made (2021) Studi Skema Pertahanan Sistem Interkoneksi Sumatera Mempertimbangkan Lepasnya Saluran Transmisi Backbone 275 kV dan 150 kV. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Stabilitas sistem tenaga listrik adalah kemampuan sistem untuk mendapatkan kembali titik keseimbangan setelah mengalami suatu gangguan. Pemadaman besar dalam sistem tenaga listrik seringkali merupakan hasil dari lepasnya saluran transmisi utama yang menyebabkan sistem mengalami islanding. Masing-masing island akan mengalami permasalahan ketidakseimbangan pembangkitan dan beban, jika performanya kurang baik, maka berpotensi menyebabkan ketidakstabilan serta melanggar batasan frekuensi yang telah ditetapkan. Secara umum, Sistem Interkoneksi Sumatera merupakan sistem radial dengan saluran transmisi yang panjang yang memiliki berbagai macam permasalahan. Untuk meningkatkan keandalam sistem, dalam tugas akhir ini akan dibahas mengenai skema pertahanan Sistem Interkoneksi Sumatera ketika terjadi lepas saluran transmisi backbone 275 kV dan 150 kV, serta usaha-usaha yang dapat dilakukan jika sistem mengalami ketidakstabilan. Dari hasil simulasi, pada kondisi overgenerated island, frekuensi akan naik dan melanggar batasan frekuensi sehingga diperlukan generation shedding dengan jeda waktu singkat, sedangkan pada kondisi undergenerated island, frekuensi akan turun dan performa island bergantung pada skema pelepasan beban yang diterapkan. Selain itu, respon governor dari PLTA sangat menentukan stabilitas sistem ketika terjadi islanding.
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Power system stability is the ability of the system to regain its equilibrium point after experiencing a disturbance. Major blackout in the power system is often the result of a major transmission line tripping, causing the system to separate into island. Each island will experience problems with generating and load imbalances, and if the island performance is poor, it has the potential to cause instability and violate the predetermined frequency limits. In general, the Sumatran Interconnection System is a radial system with a long transmission line that has various problems. To increase the reliability of the system, this final project will discuss about the defense scheme of the Sumatran Interconnection System considering No-Fault Double-Circuit Tripping of the backbone 275 kV and 150 kV transmission line, as well as the efforts that can be made if the system experiences instability. From the simulation results, in the overgenerated island condition, the frequency will increase and violate the frequency limit so that generation shedding is needed with a short time lag, while in the undergenerated island condition, the frequency will decrease, and the island's performance depends on the applied load shedding scheme. In addition, the governor's response from the hydropower plant greatly determines the stability of the system when islanding occurs.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Skema Pertahanan, Kestabilan Transien, Sistem Interkoneksi, Defense Scheme, Transient Stability, Interconnection System
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Made Darmayasa
Date Deposited:	16 Aug 2021 14:30
Last Modified:	16 Aug 2021 14:30
URI:	http://repository.its.ac.id/id/eprint/87310

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