Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique
Abdel-Aall, M., El-Hadidy, M., Mansour, M., Mekhamer, S., El Samahy, M. (2008). Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique. EKB Journal Management System, 6(6th International Conference on Electrical Engineering ICEENG 2008), 1-14. doi: 10.21608/iceeng.2008.34531
M. H. Abdel-Aall; M. A. El-Hadidy; M. M. Mansour; S. F. Mekhamer; M. S. El Samahy. "Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique". EKB Journal Management System, 6, 6th International Conference on Electrical Engineering ICEENG 2008, 2008, 1-14. doi: 10.21608/iceeng.2008.34531
Abdel-Aall, M., El-Hadidy, M., Mansour, M., Mekhamer, S., El Samahy, M. (2008). 'Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique', EKB Journal Management System, 6(6th International Conference on Electrical Engineering ICEENG 2008), pp. 1-14. doi: 10.21608/iceeng.2008.34531
Abdel-Aall, M., El-Hadidy, M., Mansour, M., Mekhamer, S., El Samahy, M. Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique. EKB Journal Management System, 2008; 6(6th International Conference on Electrical Engineering ICEENG 2008): 1-14. doi: 10.21608/iceeng.2008.34531

Overcoming the CT saturation effect on unit protection schemes using fundamental phase comparison technique

The International Conference on Electrical Engineering
Article 159, Volume 6, 6th International Conference on Electrical Engineering ICEENG 2008, May 2008, Pages 1-14    PDF (173.88 K)
Document Type: Original Article
DOI: 10.21608/iceeng.2008.34531
Authors
M. H. Abdel-Aall1; M. A. El-Hadidy1; M. M. Mansour2; S. F. Mekhamer2; M. S. El Samahy3
1Egyptian Electricity Transmission Company.
2Electrical Power and Machines Dept., Ain Shams University.
3Egyptian Armed Forces.
Abstract
Abstract:
Current transformer saturation can cause differential protective relay mal-operation.
This paper presents a technique for overcoming current tramsformer saturation problem
based on the measurements of the fundamentals' phase-angles of the secondary currents
on both sides of the protected object. Mal-operation could be avoided by introducing
these measurements to the phase comparison technique which has the ability to
distinguish between internal and external faults..
Keywords
Current transformer saturation; fundamentals' phase-angles; phase comparison
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