TY - Journal of Shandong University(Engineering Science) A1 - Zhiyong LIN,Damin ZHANG,Xungao ZHONG,Jianbin ZENG,Qiang ZHANG T1 - Analysis of insulation state of transformer based on aging factor Y1 - 2019-02-01 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 114 EP - 119 VL - 49 IS - 1 UR - http://gxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1672-3961.0.2018.330 ER -