Utilization of a mixture of CTs and current sensors in line differential protection applications
Paper number
292Conference name
CIRED 2019Conference date
3-6 June 2019Conference location
Madrid, SpainPeer-reviewed
YesMetadata
Show full item recordAuthors
Raipala, Ontrei, ABB Oy, FinlandHovila, Petri, ABB Oy, Finland
Leminen, Janne, ABB Oy, Finland
Farughian, Amir, University of Vaasa, Finland
Memon, Aushiq, University of Vaasa, Finland
Kauhaniemi, Kimmo, University of Vaasa, Finland
Abstract
The popularity of Rogowski sensors is increasing due to their advantages over conventional CTs. Consequently, network utilities may sometimes end up facing a question whether it would be possible to use line differential protection on a line where the current measurements at the local end are based on CTs, whereas, the remote end measurements are based on current sensors. The main challenge in the use of such a combination in line differential protection applications is that while CTs may saturate, Rogowski sensors do not. Such issues were studied in a hardware-in-the-loop simulation setup. Based on the studies conducted, it appears that the use of mixture of CTs and current sensors for line differential protection applications is a feasible option provided that the CTs are properly dimensioned and that the protection settings are carefully chosen.Publisher
AIMDate
2019-06-03Published in
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/808http://dx.doi.org/10.34890/1026