Aliran Daya Optimal dengan Batas Kestabilan Tegangan untuk Sistem Kalimantan Selatan dan Tengah

Wibowo, Amirul Hadi (2018) Aliran Daya Optimal dengan Batas Kestabilan Tegangan untuk Sistem Kalimantan Selatan dan Tengah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pertumbuhan ekonomi selalu berbanding lurus dengan kebutuhan listrik, namun sering kali tidak diimbangi dengan peningkatan rasio elektrifikasi. Rasio elektrifikasi di Indonesia secara keseluruhan adalah 70%-90%. Pada Provinsi Kalimantan, di tahun 2016 hanya mencapai 84.87%. Untuk meningkatkan rasio elektrifikasi, sejak tahun 2017 PLN merencanakan untuk melakukan peningkatan sumber energi listrik salah satunya di Kalimantan Selatan dan Tengah. Salah satu kriteria yang harus dipenuhi adalah kestabilan tegangan. Kestabilan tegangan merupakan kemampuan sistem untuk mempertahankan tegangan sesuai batas yang ditentukan setelah terjadi gangguan, jika sistem gagal mempertahankan tegangan maka dapat memicu terjadinya keruntuhan tegangan (voltage collapse) yang menimbulkan kerugian ekonomis. Untuk mengetahui jarak titik operasi dengan titik collapse digunakan load margin. Voltage Stability Constrained Optimal Power Flow (VSC-OPF) menggunakan metode sequential quadratic programming merupakan modifikasi Alternate Current Optimal Power Flow yang digunakan dengan mempertimbangkan kestabilan tegangan dengan pendekatan load margin. Berdasarkan hasil simulasi, dapat diketahui biaya pembangkitan minimum dari jarak titik nominal operasi, hingga titik maksimal sebelum titik collapse yang dapat dijadikan rekomendasi di tahun berikutnya bagi sistem Kalimantan Selatan dan Tengah agar dapat bertahan pada batas kestabilan tegangan. ============== The economic growth rate is directly proportional to electricity demand, but it is constantly not followed by the development of electrification ratio. Indonesia electrification ratio is approximately 70%-90%. In 2016, Kalimantan province is only achieved 84.87%. To increase electrification ratio, since 2017, Perusahaan Listrik Negara (PLN) has planned to increase the supply of electricity, specifically in South Kalimantan and Middle Kalimantan system. One of the needed criteria is voltage stability. Voltage stability is an ability of a system to maintain the voltage in the permitted value after a disturbance occurred, if the system failed to maintain the disturbance it will soon follows to a phenomenon called voltage collapse that will leads to material loss. Load margin technique is used to measure the distance between operating point and collapse point. To maintain the voltage stability of a system an approach based on load margin and the development of alternate current optimal power flow is conducted by using sequential quadratic programming, titled voltage stability constrained optimal power flow (VSC-OPF). Based on the results, the minimal generator cost from nominal point until before collapse point could be known. It is managed to be used for next year recommendations to the South and Middle Kalimantan system, in order to maintain the voltage stability.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kestabilan tegangan, load margin, sequential quadratic programming, VSC-OPF, Load margin
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power
Divisions: Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Wibowo Amirul Hadi
Date Deposited: 29 Aug 2018 06:19
Last Modified: 29 Aug 2018 06:19
URI: http://repository.its.ac.id/id/eprint/52407

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