6Guardado JL, Naredo JL, Moreno P, etal. A comparative study of neural network efficiency in power transformers diagnosis using dissolved gas anal- ysis [ J ] . IEEE Transform on Power Delivery, 2001, 16 (4):643-647.
7T. K. Saha. Review of modem diagnostic technique for assessing insulation condition in aged transformers [ J ] . IEEE Transaction on Dielectrics and Electrical Insulation, 2003, 5 (10): 903 -919.
