Setting Differential Relay Transformer (87T) Dengan Pertimbangan Vector Group Pada PLTU Tenayan 2x110 MW

Firdausi, Teuku Rizki (2020) Setting Differential Relay Transformer (87T) Dengan Pertimbangan Vector Group Pada PLTU Tenayan 2x110 MW. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT. Pembangkitan Jawa Bali (PJB) Unit Bisnis Jasa Operasi dan Pemeliharaan (UBJOM) PLTU Tenayan memiliki peralatan proteksi yang berfungsi sebagai penunjang kegiatan pembangkitan listrik. Salah satu proteksi utama yang digunakan pada PLTU Tenayan adalah differential relay transformer (87T). Differential relay ini berfungsi melindungi main transformator dari gangguan dan bekerja dengan cepat dan selektif dalam memutus gangguan. Pada sistem kelistrikan PLTU Tenayan, main transformator maupun transformator UAT memiliki konfigurasi vector group, sehingga menyebabkan arus yang mengalir pada kedua sisi transformator akan berbeda, dan arus yang dirasakan oleh CT pada kedua sisi transformator akan berbeda pula, sehingga relay beroperasi tanpa adanya gangguan. Pada tanggal 9 Desember 2018, terjadi trip pada generator unit 1 PLTU Tenayan, sehingga menyebabkan blackout. Kejadian ini diduga akibat sambaran petir di sisi transmisi 150 kV. Pada Tugas Akhir ini akan dilakukan analisis setting differential relay transformer (87T) dengan pertimbangan vector group pada PLTU Tenayan 2x110 MW. Hasil analisis tersebut akan digunakan sebagai referensi untuk menentukan setting differential relay transformer yang tepat, sehingga sistem proteksi differential relay (87T) dapat bekerja dengan cepat dan selektif dalam mengatasi gangguan. ==================================================================================================================== PT. Pembangkitan Jawa Bali (PJB) Unit Bisnis Jasa Operasi dan Pemeliharaan (UBJOM) of the PLTU Tenayan has protective equipment that serves as a support for electricity generation activities. One of the main protections used in the Tenayan power plant is differential relay transformer (87T). It to protect the main transformer from interferences and work quickly and selectively in interrupting interferences. In the electrical system of PLTU Tenayan, main transformer and UAT transformer have a vector group configuration, so that the current flowing on both sides of the transformer will be different, and the current felt by CT on both sides of the transformer will be different, so the relay operates without interference. On December 9, 2018, a trip occurred at the generator unit 1 in PLTU Tenayan, causing a blackout. This incident is allegedly due to a lightning strike on the transmission side of 150 kV. In this Final Project an analysis of differential relay transformer (87T) settings will be conducted with vector group consideration in the PLTU Tenayan 2x110 MW. The results of the analysis will be used as a reference to determine the appropriate differential relay transformer settings, so that the differential relay protection system (87T) can work quickly and selectively in overcoming interferences.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Differential Relay, Vector Group, Sistem Kelistrikan PLTU Tenayan Differential Relay, Vector Group, Electrical System of PLTU Tenayan
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1322.6 Electric power-plants
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6565.T7 Transformers
Divisions: Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Teuku Rizki FIrdausi
Date Deposited: 12 Aug 2020 06:50
Last Modified: 12 Aug 2020 06:50
URI: http://repository.its.ac.id/id/eprint/77222

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