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A New Method of Improving Transformer Restricted Earth Fault ProtectionKRSTIVOJEVIC, J. P. , DJURIC, M. B.
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power transformer, power system protection, fault discrimination, digital phase comparator, current transformer saturation
transformer(15), power(14), protection(10), relay(7), fault(5), systems(4)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2014-08-31
Volume 14, Issue 3, Year 2014, On page(s): 41 - 48
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2014.03005
Web of Science Accession Number: 000340869800005
SCOPUS ID: 84907312675
A new method of avoiding malfunctioning of the transformer restricted earth fault (REF) protection is presented. Application of the proposed method would eliminate unnecessary operation of REF protection in the cases of faults outside protected zone of a transformer or a magnetizing inrush accompanied by current transformer (CT) saturation. On the basis of laboratory measurements and simulations the paper presents a detailed performance assessment of the proposed method which is based on digital phase comparator. The obtained results show that the new method was stable and precise for all tested faults and that its application would allow making a clear and precise difference between an internal fault and: (i) external fault or (ii) magnetizing inrush. The proposed method would improve performance of REF protection and reduce probability of maloperation due to CT saturation. The new method is robust and characterized by high speed of operation and high reliability and security.
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 An algorithm with voltage inputs for detecting conductor breaks in radial distribution networks, Ostojić, Mladen M., Stojanović, Zoran N., International Transactions on Electrical Energy Systems, ISSN 2050-7038, Issue 12, Volume 31, 2021.
Digital Object Identifier: 10.1002/2050-7038.13195 [CrossRef]
 The algorithm with synchronized voltage inputs for islanding detection of synchronous generators, Ostojić, Mladen M., Djurić, Milenko B., International Journal of Electrical Power & Energy Systems, ISSN 0142-0615, Issue , 2018.
Digital Object Identifier: 10.1016/j.ijepes.2018.06.023 [CrossRef]
 Verification of Transformer Restricted Earth Fault Protection by using the Monte Carlo Method, KRSTIVOJEVIC, J. P., DJURIC, M. B., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 3, Volume 15, 2015.
Digital Object Identifier: 10.4316/AECE.2015.03009 [CrossRef] [Full text]
 Normalized Dynamic Time Warping Distance Based Auxiliary Restraint Scheme for Restricted Earth Fault Protection of Converter Transformers, Weng, Hanli, Guo, Yida, Liu, Yikui, Li, Haowei, Li, Zhenxing, Huang, Jingguang, IEEE Transactions on Power Delivery, ISSN 0885-8977, Issue 3, Volume 37, 2022.
Digital Object Identifier: 10.1109/TPWRD.2021.3089156 [CrossRef]
 A new artificial intelligence based supervision method for low-impedance REF relays, Ebadi, Ali, Hosseini, Seyyed Mehdi, Abdoos, Ali Akbar, Electric Power Systems Research, ISSN 0378-7796, Issue , 2021.
Digital Object Identifier: 10.1016/j.epsr.2021.107177 [CrossRef]
 Out‐of‐step protection of synchronous generators based on a digital phase comparison in the time domain, Ostojić, Mladen M., Djurić, Milenko B., IET Generation, Transmission & Distribution, ISSN 1751-8695, Issue 4, Volume 12, 2018.
Digital Object Identifier: 10.1049/iet-gtd.2017.0604 [CrossRef]
 The algorithm for the detection of loss of excitation of synchronous generators based on a digital-phase comparator, Ostojić, Mladen, Djurić, Milenko, Electrical Engineering, ISSN 0948-7921, Issue 2, Volume 100, 2018.
Digital Object Identifier: 10.1007/s00202-017-0586-3 [CrossRef]
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Stefan cel Mare University of Suceava, Romania
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