M. S. Sachdev, T. S. Sidhu, and H. S. Gill, “A Busbar Protection Technique and Its Performance during CT Saturation and CT Ratio-Mismatch”, IEEE Transaction on Power Delivery, Vol.15, No.3, pp. 895–901, July 2000.
C. Fernández, “An Impedance-Based CT Saturation Detection Algorithm for Bus-Bar Differential Protection”, IEEE Transaction on Power Delivery, Vol.16, No.4, pp.468–472, October 2001.
Y. Kang, S. Ok, and S. Kang, "A CT Saturation Detection Algorithm”, IEEE Transaction on Power Delivery, Vol.19, No.1, pp.78–85, January 2004.
N. Villamagna and P. A. Crossley, “A CT Saturation Detection Algorithm Using Symmetrical Components for Current Differential Protection”, IEEE Transaction on Power Delivery, Vol.21, No.1, pp.38–45, January 2006.
Chi-Shan Yu, “Detection and Correction of Saturated Current Transformer Measurements Using Decaying DC Components”, IEEE Transaction on Power Delivery, Vol.25, No.3, pp.1340–1347, July 2010.
Z. Lu, J. S. Smith, and Q. H. Wu, “Morphological Lifting Scheme for Current Transformer Saturation Detection and Compensation”, IEEE Transaction on Circuits and Systems, Vol.55, No.10, pp.3349–3357, November 2008.
F.B. Ajaei, M. Sanaye-Pasand, M. Davarpanah, A. Rezaei-Zare, R. Iravani, “ Compensation of the Current-Transformer Saturation Effects for Digital Relays”, IEEE Transaction on Power Delivery, Vol.26, No.4, pp.2531-2540, October 2011
Waldemar Rebizant, and Daniel Bejmert, “Current Transformer Saturation Detection with Genetically Optimized Neural Networks”, IEEE Transaction on Power Delivery, Vol.22, No.2, pp.820–827, April 2007.
Z. Moravej, D. N. Vishwakarma and S. P. Singh, “Protection and Conditions Monitoring of Power Transformer Using ANN”, Electric Power Components and Systems, Vol.30, Issue 3, pp.217–231, March 2002.
M. Geethanjali, S. M. R. Slochanal, and R. Bhavani, “PSO trained ANN-based differential protection scheme for power transformers”, Neurocomputing, Vol.71, pp.904–918, April 2007.
E. Rashedi, H. Nezamabadi-pour, and S. Saryazdi, “GSA: A Gravitational Search Algorithm”, Information Sciences, Vol.179, pp.2232–2248, March 2009.
C. Li, and J. Zhou, “Parameters identification of hydraulic turbine governing system using improved gravitational search algorithm”, Energy Conversion and Management, Vol.52, pp.374–381, March 2011.