Düzeltme: Design of Digital Differential Relay for Protection of Power Transformers Operating Under Highly Non-Linear Load

Yıl 2024, Cilt: 2 Sayı: 1, 1 - 1, 30.06.2024

Hülya Doğan , Murat Çıkan

Bu makalenin ilk hali 31 Aralık 2023 tarihinde yayımlandı. https://dergipark.org.tr/tr/pub/cumfad/issue/82420/1410887

Düzeltme Notu

Düzeltme/Erratum 2023 yılı 2. Sayıda yayınlanan; “Design of Digital Differential Relay for Protection of Power Transformers Operating Under Highly Non-Linear Load” başlıklı makalede yapılan düzeltmeler aşağıdaki gibidir. Düzeltme Açıklaması: Sivas Cumhuriyet Üniversitesi Mühendislik Fakültesi Dergisinin 2023 yılı 2. Sayısında yer alan “H. Doğan, “Design of Digital Differential Relay for Protection of Power Transformers Operating Under Highly Non-Linear Load”, CUMFAD, c. 1, sy. 2, ss. 94–104, 2023.” referanslı makalede çalışmaya ilişkin ikinci yazar sehven yazılmamış ve bu durum sorumlu yazar tarafından bildirilmiştir. Yapılan bu hatadan dolayı yazarlar, okuyuculardan özür dilemektedir. Makalede yer alan hatanın giderilmesi amacıyla bu düzeltme metni sunulmuştur. Bu Makalenin ilk hali 31.12.2023 tarihinde yayınlandı. Makale URL: https://dergipark.org.tr/tr/pub/cumfad/issue/82420/1410887 Yayımlanmış Hali: Doğan H (2023) Design of Digital Differential Relay for Protection of Power Transformers Operating Under Highly Non-Linear Load, Journal of Engineering Faculty, 1(2): 94-104. Bildirilen Düzeltilmiş Hali: Doğan H, Çıkan M (2023) Design of Digital Differential Relay for Protection of Power Transformers Operating Under Highly Non-Linear Load, Journal of Engineering Faculty, 1(2): 94-104.

Öz

Electric Arc Furnaces (EAF) are the loads in the industry with highest rate of power consumption and they have a highly non-linear operating characteristic. In this study, Design of digital differential role model for protection of three-phase step-down power transformer supplying EAF and Matlab/Simulink simulation are presented. For this purpose, three-phase system model supplying power to EAF is modelled by means of Matlab/Simulink. In order to ensure sensitivity to role and distinguish the inrush currents from fault currents, inrush currents and current harmonics experimentally obtained from 100 MVA power transformer are measured. Thus, the difference between inrush and fault currents are specified and appropriate relay slope coefficients for designed dual-slope role characteristic are defined. When single-phase and multiphase faults in the obtained results of the simulation are examined in this study, it is revealed that the designed digital differential relay has an efficient operational performance in loads with highly non-linear and rapid changes characteristic such as EAF.

Anahtar Kelimeler

Digital Differential Relay, Electric Arc Furnace (EAF), Non-Linear Load, Transformer Protection

Kaynakça

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