Peramalan Usia Pemutus Tenaga (PMT) 70 kV T/L Bay Driyorejo Menggunakan Metode Regresi Berdasarkan Data Pemeliharaan di Gardu Induk Miwon, Kabupaten Gresik, Jawa Timur

Aula, Ikfiana Wafirotul (2026) Peramalan Usia Pemutus Tenaga (PMT) 70 kV T/L Bay Driyorejo Menggunakan Metode Regresi Berdasarkan Data Pemeliharaan di Gardu Induk Miwon, Kabupaten Gresik, Jawa Timur. Undergraduate thesis, Universitas Muhammadiyah Surabaya.

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Abstract

Pemutus Tenaga (PMT) merupakan komponen kritis pada sistem transmisi tenaga listrik yang berfungsi untuk memutus dan menghubungkan arus listrik dalam kondisi normal maupun gangguan. Keandalan PMT sangat dipengaruhi oleh kondisi sistem isolasi, kontak, mekanik operasi, serta media pemadam busur api. Penelitian ini bertujuan untuk menganalisis kondisi operasional dan melakukan peramalan usia pakai PMT 70 kV T/L Bay Driyorejo di Gardu Induk Miwon berdasarkan data pemeliharaan rutin dua tahunan periode 2015–2025.
Parameter yang dianalisis meliputi tahanan isolasi, tahanan kontak, keserempakan kontak, dan kandungan SO₂ pada gas SF₆. Data diperoleh dari hasil pengujian berkala dalam kegiatan pemeliharaan rutin PMT sehingga mampu merepresentasikan perubahan kondisi peralatan seiring bertambahnya usia operasional. Metode penelitian menggunakan studi kasus dengan pendekatan kuantitatif, dimana hasil pengujian dievaluasi berdasarkan standar SKDIR-0520/2014 dan dianalisis tren perubahannya menggunakan metode regresi linear sebagai model utama peramalan usia pakai PMT. Regresi polinomial orde tiga digunakan sebagai metode pembanding untuk menilai pengaruh variasi data terhadap hasil peramalan.
Hasil analisis menunjukkan bahwa seluruh parameter masih berada dalam batas standar yang ditetapkan, namun memperlihatkan kecenderungan degradasi seiring bertambahnya usia operasional PMT. Degradasi paling signifikan terjadi pada kualitas gas SF₆ yang ditandai dengan peningkatan kandungan SO₂ pada tahun 2023 dan 2025 yang telah melampaui batas standar <12 ppmv. Peningkatan kandungan SO₂ tersebut berpotensi menurunkan kemampuan isolasi dan efektivitas pemadaman busur api. Model regresi linear menunjukkan tren yang lebih stabil dan representatif untuk peramalan jangka panjang. Berdasarkan hasil peramalan, PMT masih dinyatakan layak beroperasi dengan rekomendasi penggantian gas SF₆ serta peningkatan pemantauan dan tindakan preventif pada sistem isolasi gas sebagai bagian dari pemeliharaan berbasis kondisi.

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The Power Circuit Breaker (PCB) is a critical component in the electrical transmission system that functions to disconnect and connect electrical currents under both normal and fault conditions. The reliability of PMT is highly influenced by factors such as insulation system condition, contact reliability, mechanical operation, and arc quenching media. This research aims to analyze the operational conditions and forecast the service life of the 70 kV PMT T/L Bay Driyorejo at Miwon Substation based on biennial maintenance data from 2015 to 2025.
The parameters analyzed include insulation resistance, contact resistance, contact synchronization, and SO₂ content in SF₆ gas. Data was obtained from regular maintenance testing, which reflects the equipment’s condition changes over time as its operational age increases. The research method employed a case study with a quantitative approach, where the test results were evaluated according to SKDIR-0520/2014 standards and analyzed for trend changes using linear regression as the primary forecasting model. Polynomial regression of the third order was used as a comparative method to assess the effect of data variation on the forecasting results.
The analysis results showed that all parameters still met the established standards but displayed a degradation trend as the PMT’s operational age increased. The most significant degradation was observed in the quality of SF₆ gas, marked by an increase in SO₂ content in 2023 and 2025, which exceeded the standard limit of <12 ppmv. This increase in SO₂ content has the potential to reduce insulation performance and arc quenching effectiveness. The linear regression model showed a more stable and representative trend for long-term forecasting. Based on the forecast, the PMT is still deemed operationally viable, with recommendations for gas SF₆ replacement and enhanced monitoring and preventive actions on the gas insulation system as part of condition-based maintenance.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Pemutus Tenaga, Analisis Tren, Regresi Linear, Peramalan Usia PMT, Power Circuit Breaker, Trend Analysis, Linear Regression, PMT Service Life Forecasting
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: 08. Fakultas Teknik > Teknik Elektro
Depositing User: Aula Ikfiana Wafirotul
Date Deposited: 02 Apr 2026 04:14
Last Modified: 02 Apr 2026 04:14
URI: https://repository.um-surabaya.ac.id/id/eprint/11191

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