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All Journal Jurnal Pendidikan Teknik Mesin Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Pendas : Jurnah Ilmiah Pendidikan Dasar Motor Bakar : Jurnal Teknik Mesin Jurnal Rekayasa Energi dan Mekanika TOFEDU: The Future of Education Journal Kohesi: Jurnal Sains dan Teknologi Journal of Vocational and Career Education
Supriyatna, Deddy
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

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Turbine Governing System at PT PLN Indonesia Power PLTU Banten 2 Labuan Esa Mi'rajuddin, Septa; Supriyatna, Deddy; Putra, Ricky Cahyasari
The Future of Education Journal Vol 5 No 1 (2026)
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v5i1.1686

Abstract

This study aims to analyze the performance of the Turbine Governing System in a 100 MW steam turbine in maintaining power system frequency stability through the regulation of the steam chest, governor valve, and Emergency Stop Valve (ESV) under load variations of ±10% from the nominal power. The research employs a descriptive quantitative approach based on literature studies, supported by dynamic modeling and system response simulations under a droop configuration of 4–5%. The results show that a 10% load increase causes an initial frequency deviation of 0.18–0.22 Hz from the nominal 50 Hz, with an initial governor valve response time of 0.25–0.35 seconds and a settling time of 4–6 seconds, which remain within the standard operational limits of power systems. A 4% droop configuration produces a faster frequency response but with greater power overshoot (5–6%), while a 5% droop configuration provides better power stability with lower overshoot (3–4%), indicating a trade-off between response speed and system stability. The steam chest dynamic analysis reveals that an increase in the steam pressure time constant can slow frequency recovery by up to 18–22%. Under extreme disturbance conditions, the ESV is capable of closing within 0.15–0.20 seconds, effectively preventing turbine overspeed. These findings highlight that frequency stability is determined not only by the generating capacity of the power plant but also by the quality of dynamic response and the integrated coordination among the steam chest, governor valve, and ESV. This coordination becomes increasingly strategic in supporting the flexibility and reliability of power systems amid the growing penetration of renewable energy.
FAKTOR-FAKTOR KESULITAN BELAJAR TERHADAP HASIL BELAJAR MATA PELAJARAN CAD PENGGUNAAN AUTOCAD PADA SISWA JURUSAN TEKNIK GAMBAR MESIN SMKN 2 KOTA SERANG Mochamad Dafa Faizal; Iman, Atep; Supriyatna, Deddy
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 Nomor 02, Juni 2026 Public
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.47312

Abstract

This study aims to analyze the factors influencing learning outcomes in the CAD subject using AutoCAD software among twelfth-grade students of the Mechanical Drawing Engineering Department at SMKN 2 Serang City. The research employs a descriptive quantitative method with a saturated sampling technique, involving 37 students as both the population and the sample. Data were collected through a Likert-scale questionnaire that had been tested for validity and reliability and were analyzed using descriptive statistics. The results indicate that students’ internal factors are in the moderate category, reflected in suboptimal motivation, interest, attention, and learning readiness, while external factors also fall within the moderate to high category, with remaining constraints in learning facilities and teaching methods that do not fully support effective AutoCAD practice. Furthermore, students’ learning outcomes in cognitive, psychomotor, and affective domains are categorized as moderate. These findings suggest that although students possess a basic understanding, their ability to independently apply AutoCAD still requires improvement through the enhancement of both internal and external learning.
Co-Authors Adiyanto, Arnold Ananda Yhuto Wibisono Putra Andhika, Muhamad Bintang Putra Ardiansyah, Muhammad Robby Eko Susilo Esa Mi'rajuddin, Septa FAISAL HARIS Fauzan, Danny Febnesia, Helleni Haris Abizar, Haris Haryana, Jukri Hermawan, Reza Iman, Atep Mochamad Dafa Faizal Pahrudin, Iip Ramdani, Maftuh Ikhsan Ricky Cahyasari Putra Shidqi, Fahmi Shidqi Sumitra Sumitra Surasa Surasa YENI, YENI YENI