Desain Critical Clearing Time untuk Meningkatkan Kestabilan Transien pada Power Transfer Limit Sistem Interkoneksi 275 kV Sumatera

Setyobhakti, Adhika (2021) Desain Critical Clearing Time untuk Meningkatkan Kestabilan Transien pada Power Transfer Limit Sistem Interkoneksi 275 kV Sumatera. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem Sumatera memiliki karakteristik sistem yang panjang ditopang saluran interkoneksi 275 kV sebagai backbone, dengan profil pembangkitan berpusat di Selatan sedangkan pusat beban di wilayah Utara. Sistem Sumatera merupakan salah satu sistem kelistrikan yang mengalami peningkatan kebutuhan dan pasokan listrik yang cukup pesat, akan tetapi pembiayaan yang kurang memadai dan masalah lahan menyebabkan perusahaan listrik kesulitan untuk membangun saluran transmisi tambahan. Akibatnya, saluran transmisi mengalami peningkatan transfer daya yang memungkinkan terjadinya gangguan keamanan, stabilitas dan keandalan pada sistem tenaga listrik. Seiring dengan peningkatan yang terjadi, diperlukan adanya analisis stabilitas transien yang penting bagi perencanaan dan operasi sistem tenaga. Salah satu cara yang dapat digunakan untuk menentukan kestabilan transien sistem adalah dengan menggunakan critical clearing time. CCT akan menunjukkan batasan waktu pengamanan gangguan transien tanpa menyebabkan generator pada sistem hilang sinkron. Berdasarkan data hasil simulasi yang didapat untuk kondisi existing sistem, CCT terkecil berada di Saluran Binjai – Pangkalan Susu dengan 0,15 s. Hasil analisis juga menunjukkan selisih antara transfer daya eksisting dan batas transfer daya kondisi transien cukup besar, dengan selisih terendah di Saluran Bangko – Lubuk Linggau sebesar 123 MW. Nilai CCT saat kondisi batas transfer daya transien juga berubah dari kondisi eksistingnya, namun tetap dalam batasan standar dengan nilai CCT terendah di 0,1 s.
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The Sumatra system has a long system characteristic supported by 275 kV interconnection lines as the backbone, with a generation profile centered in the South while the load center is in the North. The Sumatra system is one of the electricity systems that has experienced a rapid increase in electricity demand and supply, but inadequate financing and land acquisition problems have made it difficult for utility companies to build additional transmission lines. As a result, the transmission line experiences an increase in power transfer which allows for disruption of security, stability and reliability in the electric power system. As the improvements occur, transient stability analysis is necessary which is essential for power system planning and operation. One way that can be used to determine the transient stability of the system is to use the critical clearing time. The CCT will show the time limit for securing transient disturbances without causing any generator in the system to loss of synchron. Based on the simulation results obtained for the existing system conditions, the smallest CCT is in the Binjai – Pangkalan Susu 275 kV line with 0.15 s. The results of the analysis also show that the difference between the existing power transfer and the power transfer limit for transient conditions is quite large, with the lowest difference in the Bangko Channel – Lubuk Linggau of 123 MW. The CCT value when the transient power transfer limit condition also changed from the existing condition, but remained within the standard limit with the lowest CCT value at 0.1 s.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Critical Clearing Time, Transient Stability, Power Transfer, Critical Clearing Time, Kestabilan Transien, Transfer Daya
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 Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Adhika Setyobhakti
Date Deposited:	18 Aug 2021 03:21
Last Modified:	18 Aug 2021 03:21
URI:	http://repository.its.ac.id/id/eprint/87151

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