Evaluation of Differential Protection in a Main Power Transformer: A Case Study in PT Pertamina Geothermal Energy Area of Kamojang

Authors

  • Gady Altama Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta
  • Muhamad Yusvin Mustar Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta
  • Ramadoni Syahputra Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta
  • Teguh Iman Prasetyo 2Production on the Job Trainer and Competence Assessor, Petroleum Development Oman

DOI:

https://doi.org/10.18196/jet.3256

Keywords:

Main Transformer, Differential Relay, ETAP Software

Abstract

The electric power system consists of various components, ranging from the components of generation, transmission, and distribution. The systems are quite expensive, so that excellent, reliable, and economic protection is needed to avoid internal and external faults.  The faults can trigger damage to components, especially on the main transformers in the Power Plant Geothermal Unit 4 of the Kamojang area managed by PT Pertamina Geothermal Energy. Disturbances that occur in the main transformers of various types so that the primary protection needed in the transformer is a differential relay to protect to avoid interference that occurs. This study discusses the comparison of theoretical differential relay calculation calculations with actual differential relay setting data in the Kamojang Unit 4 Geothermal Power Plant and simulates with ETAP 12.6 software. The problem that occurs in the main transformer of the Geothermal Power Unit Unit 4 Kamojang area is the difference in the slope 1 of the actual setting data with a mathematical calculation that is the actual setting data of 40% and the numerical calculation data worth 8.5%. Please note that the minimum slope one limit is 5%. PT Pertamina Geothermal Energy made slope one changes, so that differential relays are not too sensitive to the interference current that occurs within the protection zone of differential relays.

Author Biography

Ramadoni Syahputra, Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta

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References

J. G. Adrichak, J. Cardenas, "Bus differential protection", 22nd WPRC Conference, pp. 1-11, October 1995.

Syahputra, R. (2010). Fault Distance Estimation of Two-Terminal Transmission Lines. Proceedings of International Seminar on Applied Technology, Science, and Arts (2nd APTECS), Surabaya, 21- 22 Dec. 2010, pp. 419-423.

W. Guan, K. J. R. Liu, "Performance analysis of two-way relaying with non-coherent differential modulation", IEEE Trans. Wireless Commun., vol. 10, no. 6, pp. 2004-2014, June 2011.

W. Rebizant, T. Hayder, L. Schiel, "Prediction of CT saturation period for differential relay adaptation purposes", International Conference on Advanced Power System Automation and Protection, pp. 1-6, 2004.

GEK-45307K-Transformer Differential Relays with Percentage and Harmonic Restraint Types STD15C and STD16C GE Protection & Control, Malvern, PA, pp. 12-13.

B. Kasztenny, A. Kulidjian, "Differential protective relay for electrical buses with improved immunity to saturation of current transformers", April 2000.

M. R. Avendi, Ha. H Nguyen, "Differential dual-hop relaying over time varying Rayleigh fading channel", IEEE Conference, June 2013.

J. O. Aibangbee, Bells, Ota, "Power Transformer Inrush Current Detection & Harmonic Sharing In Differential Relay Protection", International Journal of Engineering Trends and Technology (IJETT), vol. 33, March 2016.

Byung, "Saturation Detection-Based Blocking Scheme for Transformer Differential Protection", journal paper Energies, vol. 7, pp. 4571-4587, 2014.

J. O. Aibangbee, S. O. Onohaebi, "Power Transformer Differential Relay Inrush Restraint Setting Applications", IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE), vol. 11, no. 1, pp. 68-75, Jan. 2016.

I. Kim, P. Liu, S. Gazor, D. Kim, "Noncoherent amplify-and-forward cooperative networks: Robust detection and performance analysis", IEEE Trans. Commun., vol. 61, no. 9, pp. 3644-3659, Sept. 2013.

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Published

2019-06-11

How to Cite

Altama, G., Mustar, M. Y., Syahputra, R., & Prasetyo, T. I. (2019). Evaluation of Differential Protection in a Main Power Transformer: A Case Study in PT Pertamina Geothermal Energy Area of Kamojang. Journal of Electrical Technology UMY, 3(2), 69–77. https://doi.org/10.18196/jet.3256

Issue

Vol. 3 No. 2 (2019): June

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