8Xiong H, Sun C. Artificial immune network classification algorithm for fault diagnosis of power transformer[J]. IEEE Trans on Power Delivery, 2007, 22(2): 930-935.
9Castro A R G, Miranda V. Knowledge discovery in neural networks with application to transformer failure diagnosis[J]. IEEE Trans on Power Systems, 2005, 20(2): 717-724.
10IEC 60599-1999. Mineral oil-impregnated electrical equipment in service-guide to the interpretation of dissolved and free gases analysis[S].