Analysis on Heat Source of Abnormal Temperature Rise of Composite Insulator Housings

被引：30
作者：
Yuan, Zhikang [1 ]
Tu, Youping [1 ]
Zhao, Yongfei [1 ]
Jiang, Han [1 ]
Wang, Cong [1 ]
机构：
[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2017年 / 24卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Temperature rise; composite insulator; housing; surface current; moisture; dielectric loss; MOISTURE;
D O I：
10.1109/TDEI.2017.006929
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：
In recent years, the local temperature rise of composite insulators has become a serious problem. In this paper, the temperature rise characteristics of the insulators at different humidity were studied at first in the laboratory. High humidity was found to be the prerequisite of temperature rise. Then the electrical characteristics of temperature rise area were analyzed. The housings of samples showed different surface currents under AC and DC electrical field. The temperature rise of the sample caused by the surface current was simulated and calculated afterwards. It was proved that the temperature rise of the housing was caused by the surface current. Finally, a temperature rise model of the housing was established. Dielectric loss in the surface layer of the silicone rubber induced by moisture is the primary factor that caused temperature rise on field-aged composite insulator housings.
引用
收藏
页码：3578 / 3585
页数：8
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