6Stone G C, Kapler J. Using partial discharge measurement technology to implement predictive maintenance in high voltage motor and gene- rator stator windings[C] // IEEE Cement Industry Technical Conference. Herssey, USA: IEEE, 1997: 63-68.
7Culbert I M, Dhirani H. On-line measurement of partial discharges on large motors in a generating station[C]//Proceedings of 2001 Elec- trical Insulation Conference and Electrical Manufacturing & Coil Winding Conference. Cincinnati, USA: [s.n.], 2001: 537-540.
8Azuaje C J, Tortes W J. Experiences in identification of partial dis- charge patterns in large hydrogenerators[C]//IEEE PES Transmission and Distribution Conference and Exposition. Caracas, Venezuel: IEEE, 2006: 438-420.
9Savin S, Ait-Amar S, Roger D, Prospective method for partial dis- charge detection in large AC machines using magnetic sensors in low electric field zones[J]. Aces Journal, 2011, 26(9): 729-734.
10Nelson J K, Azizi-Ghannad S. Measures and technologies to enhance the insulation condition monitoring of large electrical machines[J]. IEEE Transactions on Dielectric and Electrical Insulation, 2004, 19(11): 102-112.