Evaluasi Koordinasi Proteksi Arus Lebih Akibat Gangguan yang Menyebabkan Blackout pada PT PJB Unit Pembangkitan Cirata
Submission Date: 2023-07-21 13:56:39
Accepted Date: 2023-09-18 06:34:28
Abstract
PT PJB Unit Pembangkitan Cirata merupakan perusahaan yang bergerak dibidang Pembangkit Listrik Tenaga Air. Seiring dengan penambahan dan perubahan pada peralatan listrik, setting pengamanan pada rele proteksi perlu dilakukan evaluasi secara komprehensif demi menjaga keandalan sistem proteksi. Berdasarkan kasus di lapangan setiap terjadi gangguan pada sistem kelistrikan bagian bawah (sisi beban) maka sistem akan terjadi blackout. Kasus ini diduga karena urutan pembukaan circuit breaker (CB) yang tidak sesuai oleh rele menyebabkan CB pada sisi beban tidak trip sehingga CB pada sisi atas akan membuka lebih cepat yang memungkinkan terjadinya blackout. Sehingga perlu dilakukan proses evaluasi untuk mendapatkan setting rele proteksi yang tepat. Pada tugas akhir ini, dilakukan analisis kinerja sistem proteksi koordinasi existing rele arus lebih gangguan fasa, rele arus lebih gangguan tanah dan rele diferensial yang selanjutnya dilakukan evaluasi untuk menentukan urutan tripping rele proteksi yang tepat agar tidak terjadi blackout dan setting rele diferensial yang selektif ketika terjadi berbagai macam tipe gangguan. Hasil evaluasi setting dan koordinasi proteksi arus lebih gangguan fasa, rele arus lebih gangguan tanah, dan rele diferensial ini dapat menjadi rekomendasi bagi perusahaan ini dalam melindungi sistem kelistrikan dengan tepat dan handal.
Keywords
Blackout; Keandalan; Koordinasi Proteksi; Rele Proteksi
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