Research on Streaming Electrification of Insulation Mineral Oil
As we know, streaming electrification due to oil flow is an important phenomenon in power transformers particularly on those high rated voltage ones, and the study around it is still a challenge. In this paper, the streaming electrification characteristic of insulation mineral oil from Nynas was studied by using an improved mini-static tester to measure the electrostatic charging tendency (ECT) of oils with different aging conditions. The oil samples were aged under 120℃ in different periods up to 1350 hours, and together with different contents of oxygen and a certain amount of copper and pressboard. A comparatively better linear correlation is shown between ECT and volume resistivity (ρv), dissipation factor (tanδ) and water content, The tanδ and water content are increasing gradually with the aging time prolonged, while ρv and carboxyl decrease slowly, the acid number does not present evident fluctuation during the whole aging periods.
aging copper mineral oil electrostatic charging tendency correlation
Shuangzan Ren Takeshi Imamura Shigekazu Mori Huaqiang Li Lisheng Zhong Qinxue Yu Chao Tang Hua Zhu Xiaolong Cao Masahiro Hanai Shin Yamada
State Key Laboratory of Electrical Insulation and Power Equipment, Xian Jiaotong University, Xian, Toshiba Corporation, Kawasaki 210-0862, Japan
国际会议
哈尔滨
英文
988-991
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）