4Reinhold Braunlich, Sartin hassig et al. Assessment of insultion condition of large power transformers by on site electrical diagnostic methods [A]. IEEE Interna tional Symposium on EI[C]. Anabeim: 2000,372- 375
5Barry H. Ward, Stan Lindgren. A survey of develop ments in insulation monitoring of power transformers [A]. IEEE International Symposium on EI[C]. Anabeim: 2000, 141
6LiFQ, JiangL, Zhu DHet al. A new stationary on line PD monitoring system for power transformer[A].IEEE Conference on EI[C]. Anabeim: 2000, 686
8Alain F S, Levy, Orsino B. Oliverra Filho, et al. Ultra wideband measurements of partial discharges in air andinsulting oil[A]. International Conference on Conduc tion and Breakdown in Dielectric Liquids [C]. Roma:1996, 218
9Judd M D, Pryor B M, Kelly S C, et al. Transformer monitoring! using the UHF technique[A]. IEE Conference on High Voltage Engineering[C]. London: 1999,362
10Imagawa hiroshi, Emoto Kunio, Koyama Hiroshi, et al. Simplified simulation method for partial discharge phe nomena in GIS[A]. Proceedings of the IEEE Power En gineering Society on Transmission and Distribution[C]. London: 1999, 534