Mitigating Maloperations of Generator Protection in Oil and Gas Facilities: A Coordination Strategy for Overcurrent and Overcurrent Voltage Restrained Relays

Authors

  • Alvin Harista Rahman School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
  • Kevin Marojahan Banjar-Nahor School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
  • Nanang Hariyanto School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia

Abstract

The oil and gas industry requires a highly reliable and adaptive electrical protection system to prevent maloperation and ensure operational continuity. Unlike conventional industrial systems, electrical configurations in oil and gas facilities often feature short electrical distances between generators and loads, with some connected directly and others through transformers. This condition increases the risk of miscoordination in overcurrent relays (50/51 and 50/51V), potentially leading to widespread blackouts that may disrupt production processes and cause significant financial losses. Such maloperations are often linked to improper relay settings. Inaccurate modelling of time–current characteristic (TCC) curves and misadjustment of 50/51V relays can result in non-selective tripping, where the 50/51V relay operates before the 50/51 relay as the primary protection. This study proposes relay coordination strategies for three representative power system configurations in the oil and gas sector, which are evaluated through relay coordination simulations using power system simulation software. The approach considers for the unique characteristics of the 50/51V relay and equipment damage curves, using power system simulation software for evaluation. The results demonstrate that the proposed scheme avoids maloperation by maintaining IEEE standard coordination margins (0.2–1 s), ensuring relay curves remain below electrical equipment damage thresholds, preserving selectivity and preventing relay coordination maloperations. These findings provide practical guidelines for engineers in designing selective and reliable protection systems, thereby reducing blackout risks and supporting continuous operation in oil and gas facilities.

How to Cite

Alvin Harista Rahman, Kevin Marojahan Banjar-Nahor, Nanang Hariyanto (2026). Mitigating Maloperations of Generator Protection in Oil and Gas Facilities: A Coordination Strategy for Overcurrent and Overcurrent Voltage Restrained Relays. Journal of Engineering and Technological Sciences, Vol. 58 No. 5 (2026): Vol. 58 No. 5(2026): October, 714-731. https://doi.org/10.5614/j.eng.technol.sci.2026.58.5.9

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Date Log

Submitted
June 29, 2025
Accepted
July 22, 2026
Published
September 3, 2026

Keywords

  • coordination protection
  • overcurrent relay
  • voltage restrained
  • generator
  • oil and gas industry

How to Cite

Mitigating Maloperations of Generator Protection in Oil and Gas Facilities: A Coordination Strategy for Overcurrent and Overcurrent Voltage Restrained Relays. (2026). Journal of Engineering and Technological Sciences, 58(5), 714-731. https://doi.org/10.5614/j.eng.technol.sci.2026.58.5.9

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