6BADRKHANI A F, SANAYE-PASAND M, REZAEI-ZARE A, et al. Analysis and suppression of the coupling capacitor voltage transormer ferroresonance phenomenon[J]. IEEE Trans on Power Delivery, 2009, 24(4): 1968-1977.
7PRASAD M L, ROY M, ROY C K. Analysis of ferroresonant oscillations in a nonlinear circuit[C] // IEEE Region 10 Colloquinm and the Third ICIIS, Kharagpur, India, December 8-10, 2008.
8PETERSON H A. Transients in power systems[M]. New York: John Wiley & Sons, Inc, 1951.