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Martin Djamin
Fakultas Teknologi Industri, Institut Teknologi Budi Utomo, Jakarta, Indonesia
Religion Education Law, Crime, Criminology & Criminal Justice Social Sciences

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ANALYSIS OF THE COORDINATION OF THE 20 KV SYSTEM PROTECTION ON THE 30 MVA 150/20 KV TOWN FEEDER TRANSFORMER AT THE 150KV SURALAYA SUBSTATION Kajat Sartono; Martin Djamin; Suryadi Suryadi
Jurnal Ilmiah METADATA Vol. 8 No. 1 (2026): Edition January 2026
Publisher : LPPM YPITI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47652/metadata.v8i1.944

Abstract

One type of protective relay that requires coordination in an electric power system is the overcurrent relay (OCR) and ground fault relay (GFR). The OCR/GFR function is crucial for protecting equipment in a substation from short circuits between phases or phase-to-ground faults. Therefore, setting the OCR/GFR relay requires careful and precise calculations to ensure a sensitive, selective, fast, and reliable power protection system. Observations of faults at several substations in the Cilegon Technical Implementation Unit (UPT) revealed discrepancies in the OCR/GFR coordination. The method used was to calculate the OCR/GFR setting values on the feeder side and the main transformer side to analyze the protection system coordination.
Co-Authors Kajat Sartono Suryadi Suryadi