Influence of natural ester insulating oil on main and longitudinal insulation strength of 110 kV power transformer
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
3Hebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China
4Department of Power Engineering, North China Electric Power University, Baoding 071003, China
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