Effects of UVC Radiation on Thermal, Electrical and Morphological behavior of Silicone Rubber Insulators

被引：37

作者：

Farhadinejad, Zeinab ^{[1
]}

Ehsani, Morteza ^{[1
]}

Ahmadi-Joneidi, Iman ^{[2
]}

Shayegani, Amir Abass ^{[2
]}

Mohseni, Hosein ^{[2
,3
,4
]}

机构：

[1] Iran Polymer & Petrochem Inst, Dept Polymer Proc, Fac Polymer Proc, Tehran, Iran

[2] Univ Tehran, Sch Elect & Comp Engn, Tehran 14174, Iran

[3] Univ Tehran, Fac Engn, Tehran 14174, Iran

[4] Univ Tehran, High Voltage Lab, Tehran 14174, Iran

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2012年 / 19卷 / 05期

关键词：

Aging; Insulators; Insulator contamination; Leakage currents; Thermal factors; Ultraviolet radiation effects; FIELD;

D O I：

10.1109/TDEI.2012.6311523

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：

Ultraviolet (UV) aging is one of the most important problems that electrical insulations are faced with it. Generally, total UV radiation emitted from the sun is divided into three parts. Among all types of ultraviolet radiation, UVC has the highest energy because its wavelength is less than 290 nm. Therefore, UVC is definitely harmful for health and even for other objects on the earth including electrical insulators. The objective of the current paper is to study the aging process of silicone rubber insulators exposed to UVC radiation. To accomplish this purpose, three different kinds of commercial silicone rubber insulators were aged by UVC radiation and contaminated solution. Then their electrical and thermal properties as well as their changes on the surface were investigated by measuring leakage current, thermo-gravimetrical analysis and surface elements. It is observed that, the effect of contaminated solution on leakage current is more than the influence of UV radiation alone. In addition, combination of UVC radiation and pollution extremely increase leakage current. Pollution has especially influence on the 3th harmonic component. Aging by UVC shifts the thermal decomposition temperature of the insulations to lower temperatures and degrades the surface of the systems especially the polymers surround the filler. Also it was realized that UVC is able to decompose the filler and reduce the Al/Si ratio in the sample.

引用

页码：1740 / 1749

页数：10

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