Security Constrained Optimal Power Flow dengan Dynamic Thermal Line Rating

Sugiantoro, Nurdin (2018) Security Constrained Optimal Power Flow dengan Dynamic Thermal Line Rating. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Operasi sistem tenaga listrik yang baik menjadi hal penting untuk diperhatikan guna memenuhi kebutuhan terhadap energi listrik yang terus meningkat. Optimal power flow dapat digunakan untuk mencari solusi optimal operasi sistem tenaga listrik dengan memperhatikan aliran daya dan batasan – batasan sistem. Namun OPF konvensional tidak bisa digunakan untuk perhitungan dengan beban yang dinamis dan juga tidak mempertimbangkan batasan keamanan sistem saat terjadi kontingensi. Security Constrained Optimal Power Flow (SCOPF) merupakan pengembangan dari OPF dengan mempertimbangkan keamanan sistem dan batasan ramprate. Pada penelitian ini perhitungan SCOPF arus bolak – balik dilakukan dengan metode sequential quadratic programming. Berdasarkan hasil simulasi, terbukti bahwa metode sequential quadratic programming mampu untuk menyelesaikan permasalahan AC-SCOPF tanpa melanggar batasan ramprate, kapasitas saluran saat kontingensi, dan batasan – batasan lainnya. Total biaya pembangkitan dengan pertimbangan kontingensi menghasilkan biaya yang sedikit lebih mahal hingga 5%, karena penyesuaian pembangkitan untuk memastikan re-dispatch agar tidak melanggar batasan ramprate antara kondisi normal dengan kontingensi dan batasan kapasitas saluran. Dengan menggunakan rating saluran yang dinamis berdasarkan kondisi cuaca yang berubah – ubah, total biaya pembangkitan menjadi lebih murah terutama dengan perhitungan yang mempertimbangkan batasan keamanan sistem. ============================================================================================================ Operation of electric power system becomes an important thing to note in order to meet the need for increasing electrical energy. Optimal power flow can be used to find the optimal solution of electric power system operation taking into account power flow and system constraints. However, conventional OPF can not be used for calculations with dynamic load and also does not consider the constraints of system security when contingency occurs. Security Constrained Optimal Power Flow (SCOPF) is a development of OPF taking into account system security and ramprate constraint. In this study calculation of alternating current SCOPF is done by sequential quadratic programming method. Based on the simulation results, it is proven that sequential quadratic programming method is able to solve AC-SCOPF problems without violating the ramprate constraint, branch capacity during contingency, and other constraints. Total generating costs with contingency considerations result in slightly more expensive costs to 5%, due to generated adjustments to ensure re-dispatch to avoid violating the ramp rate constraint between normal with contingency conditions and branch capacity constraints. By using dynamic line rating based on changing weather conditions, the total cost of generation is cheaper especially with calculations that take into account system security constraint.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: ACOPF, Security Constraint, Sequential Quadratic Programming, Dynamic Line rating
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
Divisions: Faculty of Industrial Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: Sugiantoro Nurdin
Date Deposited: 28 Feb 2018 04:08
Last Modified: 28 Feb 2018 04:08
URI: http://repository.its.ac.id/id/eprint/49585

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