Research on Streaming Electrification of Insulation Mineral Oil

被引：5

作者：

Ren, Shuangzan ^{[1
]}

Li, Huaqiang ^{[1
]}

Zhong, Lisheng ^{[1
]}

Yu, Qinxue ^{[1
]}

Tang, Chao ^{[1
]}

Zhu, Hua ^{[1
]}

Cao, Xiaolong ^{[1
]}

Hanai, Masahiro ^{[2
]}

Yamada, Shin ^{[2
]}

Imamura, Takeshi ^{[2
]}

Mori, Shigekazu ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[2] Toshiba Co Ltd, Kawasaki, Kanagawa 2100862, Japan

来源：

ICPADM 2009: PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS, VOLS 1-3 | 2009年

关键词：

aging; copper; mineral oil; electrostatic charging tendency; correlation; POWER TRANSFORMERS;

D O I：

10.1109/ICPADM.2009.5252297

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 degrees C 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 (rho(nu)), dissipation factor (tan delta) and water content, The tan delta and water content are increasing gradually with the aging time prolonged, while rho(nu) and carboxyl decrease slowly, the acid number does not present evident fluctuation during the whole aging periods.

引用

页码：988 / +

页数：2

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