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Siswandi, Wawan
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ANALISIS KOORDINASI SISTEM PROTEKSI RELAI OVERCURRENT PADA JARINGAN DISTRIBUSI UNIT 3A PLTU PAITON Andreyanto, Tegar Setyo; Dhofir, Moch.; Hasanah, Rini Nur; Siswandi, Wawan
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
Publisher : Jurnal Mahasiswa TEUB

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This research aims to determine the appropriate OCR settings to handle potential short-circuit currents in the distribution network of Unit 3A at Paiton Power Plant under existing load conditions. This study focuses on the Overcurrent Relay (OCR) protection device. The short-circuit current calculations are performed mathematically using the per-unit method and sequence impedance circuit. The OCR resetting calculations in this study apply the British Standard BS-142 for relay current settings, the IEC 60255-151 standard for inverse relay operating time, and the IEEE 242 standard for relay coordination time delay. In this study, short-circuit current simulation and OCR operation simulation are conducted using the ETAP 12.6 application. The results of this research indicate the OCR relay settings as follows: Extremely Inverse with a Pickup of 0.88 and TMS of 0,425, Very Inverse with a Pickup of 0.4 and TMS of 0.1, Long Time Inverse with a Pickup of 0.75 and TMS of 0.025. Additionally, relay coordination with a time delay of 0.2-0.4 seconds is achieved. Based on the simulations, the OCR operates effectively and in compliance with the standards. Keywords— Overcurrent relay, Short Circuit, ETAP, Relay Setting
ANALISIS KINERJA VACUUM CIRCUIT BREAKER PADA SISI 13,8 kV PT PAITON OPERATION & MAINTENANCE INDONESIA (POMI) UNIT 3 Adityara, Farrel Billy; Dhofir, Moch.; Hasanah, Rini Nur; Siswandi, Wawan
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
Publisher : Jurnal Mahasiswa TEUB

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This study aims to analyze the performance of the VCB based on the parameters in SPLN Standard No. 52-1 1983 and IEC 62271-100 and to determine the technical feasibility of the 13,8 kV VCB work at PT POMI Unit 3A is still feasible to operate or not. The VCB parameter test uses standards on each test with the parameters of insulation resistance, contact resistance, synchronous contact, and vacuum. This study was conducted by comparing the data of the test results in 2015 and 2021 with the standard values in each test. In the insulation resistance test results obtained at each measuring point, each phase has a value above 13,8 MΩ. The contact resistance test results of each phase obtained have a value below 22 μΩ. In the synchronous contact test, the results of calculating the delta time or the difference in working time when VCB Open and VCB Close have a value below 10 ms. The results of vacuum testing of each phase on the test equipment indicator show an indication of "GOOD" which means that the pressure in the VCB has a value below 10-7 mbar. Based on the test results of insulation resistance, contact resistance, synchronous contact, and vacuum, the VCB 13,8 kV PT POMI Unit 3A Incoming is in a suitable condition for use and can be operated because the test results according to standards. Keywords – Vacuum Circuit Breaker (VCB), Insulation Resistance, Contact Resistance, Synchronous Contact, Vacuum.
Co-Authors Adityara, Farrel Billy Andreyanto, Tegar Setyo Moch. Dhofir Rini Nur Hasanah