Title :
Investigation on flashover of polymer insulators caused by foreign bodies
Author :
Fang, Su ; Jia, Zhidong ; Guan, Zhicheng ; Wang, Yongfu ; Zhu, Keneng ; Xu, Zhihai
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
The faults of composite insulator have been divided into three kinds including pollution flashover, lightening flashover and reason unknown flashover. Some flashovers have occurred in the field but the mechanism of flashover is still unknown. This paper presents experimental results of flashover of polymer insulators caused by foreign bodies. It was found that the nonuniform voltage distribution and the dropping down foreign bodies may cause flashovers. In this paper, in addition to experiments, the voltage distribution is analyzed using the finite element method. The factors influenced the flashover phenomenon is thus studied.
Keywords :
composite insulators; fault diagnosis; finite element analysis; flashover; insulator contamination; insulator testing; polymer insulators; voltage distribution; composite insulator fault; finite element method; lightening flashover; nonuniform voltage distribution; pollution flashover; polymer insulator flashover; reason unknown flashover; Cable insulation; Dielectrics and electrical insulation; Flashover; Iron; Plastic insulation; Pollution; Polymers; Testing; Voltage; Wires;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2008. CEIDP 2008. Annual Report Conference on
Conference_Location :
Quebec, QC
Print_ISBN :
978-1-4244-2548-8
Electronic_ISBN :
978-1-4244-2549-5
DOI :
10.1109/CEIDP.2008.4772776
