Proposing a New Approach to Generate the Differential Trajectory of the Differential Relays Using COMTRADE Files

Seyed Amir Hosseini, Ali Akbar Nazari, Behrooz Taheri, Farzad Razavi () and Hamed Hashemi-Dezaki
Additional contact information
Seyed Amir Hosseini: Electrical and Computer Engineering Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan 8771767498, Iran
Ali Akbar Nazari: Department of Electrical Engineering, Qazvin Branch, Islamic Azad University, Qazvin 341851416, Iran
Behrooz Taheri: Department of Electrical Engineering, Qazvin Branch, Islamic Azad University, Qazvin 341851416, Iran
Farzad Razavi: Department of Electrical Engineering, Qazvin Branch, Islamic Azad University, Qazvin 341851416, Iran
Hamed Hashemi-Dezaki: Department of Electrical and Computer Engineering, University of Kashan, 6 km Ghotbravandi Blvd., Kashan 8731753153, Iran

Sustainability, 2022, vol. 14, issue 21, 1-25

Abstract: The differential relay is subject to transient events such as inrush current, which may affect its correct operation. Therefore, evaluating the reliable and accurate operation of differential relays is important, which is only possible by mapping the relay’s differential trajectory on its setting curve. However, except for the SIGRA software, creating a differential trajectory only for Siemens relays, there is a gap in developing a method to extract this trajectory for other commercial differential relays. Hence, in this paper, a new method for generating the differential trajectory of the differential relay from their six input currents and mapping it on the relay setting curve is presented. The proposed method uses the differential relay COMTRADE files to access the relay input currents during an incident. The currents recorded in the COMTRADE files belong to the secondary sides of the current transformers (CTs). Accordingly, the impacts of the current transformers’ connections and the protected transformer’s connection type should be considered in the proposed study. The ability of the proposed method to generate the differential trajectory for different incidents that occurred on the power transformers is evaluated using simulation studies and also according to the experimental tests. The results illustrate the efficiency of the proposed method in generating the differential trajectory from the COMTRADE files. In addition, comparing the results of the proposed method with the results created in SIGRA software shows the higher accuracy of the proposed method in producing the differential trajectory of the differential relay.

Keywords: differential protection; COMTRADE files; inrush current; power system protection (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/21/13953/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/21/13953/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:21:p:13953-:d:954731

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().