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Rusda Rusda
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Analisis Kinerja Relai Arus Lebih pada PLTU Embalut PT. Cahaya Fajar Kaltim Unit 1×60 MW dengan Simulasi Agung Prasetyo; Rusda Rusda; Masing Masing
Jurnal Teknik Mesin Sinergi Vol 17, No 2 (2019): Oktober 2019
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.964 KB) | DOI: 10.31963/sinergi.v17i2.2093

Abstract

Embalut power plant is one of the power plants that supply electricity in East Kalimantan. The plant which is operated by PT. Cahaya Fajar Kaltim, has one PLTU unit with a capacity of 2x25 MW and another with the capacity of 1x60 MW. As an electricity company that must keep continuity of electric supply to customers, a reliable electrical system is necessary. Such reliable system requires protection system to detect a problem and avoid electrical equipment damage. A proper protection system should isolate the affected area and prevent black out on the other area. A type of problem may occur is a short circuit. This study analyzes the performance of overcurrent relays in 1 × 60 MW power plant unit. The analysis was performed through ETAP 12.6.0 software which was also used to design the single line diagrams, calculate the setting currents of short circuit current, also to simulate the coordination of several overcurrent relays in the system. Adjustment of the current and time value in the overcurrent relay is obtained from the result of manual calculations. The results then are displayed in the form of a characteristic curve. Afterwards, a simulation is performed in a situation where three-phase short circuit occurs at BFWP 1.3 Bus, TR AUX.3 Bus and TR 3A.3 Bus. The results show that the overcurrent relays work properly and could overcome the problem quickly.
Analisis kualitas daya pada instalasi listrik Politeknik Negeri Samarinda Khairuddin Karim; Rusda Rusda; Masing Masing
Seminar Nasional LP2M UNM Prosiding Edisi 5
Publisher : Seminar Nasional LP2M UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.829 KB)

Abstract

The purpose of this study is to determine Power Quality at Samarinda State Polytechnic Electrical Installation. Measures of power quality include voltage and current imbalances, harmonics, power factors, voltage dip / swell and sag, and flicker. The research location was the Samarinda State Polytechnic Campus. The research was conducted by conducting direct measurements using a Power Quality Analyzer and the measurement results were compared with existing standards such as the IEEE-519 standard or the NEMA standard ((National Equipment Manufacturer's Association) about voltage imbalances. Data retrieval is done by direct measurement on installation panels in several units such as Distribution Substation, Building Directorate, Electrical Engineering Laboratory, Computer Laboratory, Machine Workshop, and Electrical Workshop. The measurement results show that voltage / current fluctuations occur but are still within the permissible limits, ranging from 228 to 242 Volt. The imbalance of voltage is still below 2% and this still meets the permitted standard. While the harmonic content still meets the standards, which is still below 5%, which is only around 2.4%. To measure overall quality, data is obtained from measurements on Distribution Station Panel on side s secondary from 20kV / 380V TM Transformer 555KVA and from TM 20kV / 380 Transformer 159 kVA. Measurements are carried out for approximately 1 day 24 hours starting at around 5:00 p.m. until 5 p.m. in the following afternoon.
Co-Authors Jayawarsa, A.A. Ketut Khairuddin Karim Masing Masing