Perbandingan Metode Untuk Penentuan Sisa Umur Isolasi Generator Pada PLTU Teluk Sirih Unit 2

Pradana, Yoga Wahyu (2025) Perbandingan Metode Untuk Penentuan Sisa Umur Isolasi Generator Pada PLTU Teluk Sirih Unit 2. Masters thesis, Institut Teknologi Sepuluh November.

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Abstract

Memprediksi keandalan sistem generator tetap menjadi tantangan yang signifikan, karena dibutuhkan metode yang tepat untuk memperkirakan Remaining Useful Life (RUL) dari komponen-komponen kritisnya, khususnya sistem isolasi generator. Tesis ini menyajikan studi komparatif terhadap tiga metode yang telah digunakan untuk memperkirakan umur sisa isolasi generator. Metode pertama didasarkan pada hasil pengujian dielektrik, yang mencakup pengukuran arus bocor (dalam satuan mA), uji tan delta, dan analisis partial discharge secara offline. Metode kedua memperkirakan RUL berdasarkan Equivalent Operating Hours (EOH), yang dihitung dari total jam operasi dan jumlah siklus start-stop pembangkit listrik. Metode ketiga menghitung RUL berdasarkan laju kegagalan peralatan dan pendekatan reliability minimum peralatan. Ketiga metode menghasilkan estimasi RUL yang berbeda: Metode I menghasilkan umur sisa sebesar 14,2 tahun, sedangkan Metode II memperkirakan 15,2 tahun dan Metode III sebesar 14,73 tahun—selisih hanya satu tahun. Perbedaan kecil ini menunjukkan bahwa ketiga metode dapat digunakan secara saling melengkapi, dengan masing-masing memiliki keunggulan tersendiri. Metode pengujian dielektrik lebih sensitif terhadap kondisi aktual isolasi, metode jam operasi cocok untuk perencanaan pemeliharaan berbasis waktu, dan metode laju kegagalan sesuai untuk pendekatan berbasis risiko atau reliabilitas. Ketiganya saling melengkapi dan memberikan gambaran holistik terhadap umur sisa isolasi generator. Dengan menggabungkan ketiga pendekatan ini, diperoleh kerangka kerja yang lebih komprehensif dan aplikatif untuk penilaian kondisi isolasi dan perencanaan pemeliharaan.
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Predicting the reliability of a generator system remains a significant challenge, as it requires appropriate methods to estimate the Remaining Useful Life (RUL) of its critical components, particularly the generator insulation system. This thesis presents a comparative study of three methods used to estimate the remaining life of generator insulation. The first method is based on dielectric test results, which include leakage current measurements (in mA), tan delta testing, and offline partial discharge analysis. The second method estimates RUL using Equivalent Operating Hours (EOH), calculated from the total operating hours and the number of start-stop cycles of the power plant. The third method calculates RUL based on the equipment failure rate and a minimum reliability threshold approach. The three methods yield different RUL estimates: Method I provides a remaining life of 14.2 years, Method II estimates 15.2 years, and Method III yields 14.73 years—a difference of only one year. This minor discrepancy indicates that the three methods can be used complementarily, each offering distinct advantages. The dielectric testing method is more sensitive to the actual insulation condition, the operating hours method is suitable for time-based maintenance planning, and the failure rate method is appropriate for a risk-based or reliability-centered approach. Together, they provide a holistic view of the remaining life of the generator insulation. By combining these three approaches, a more comprehensive and practical framework is obtained for insulation condition assessment and maintenance planning.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Generator, RUL, Pengujian Dielektrik, Equivalent Operating Hours , Laju Kegagalan, Reliability ==================================================== Generator, RUL, Dielectric Testing, Equivalent Operating Hours, Failure Rate, Reliability
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7870.23 Reliability. Failures
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User:	Yoga Wahyu Pradana
Date Deposited:	24 Jul 2025 06:10
Last Modified:	24 Jul 2025 06:10
URI:	http://repository.its.ac.id/id/eprint/121197

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