NDLI: Research on the exterior electric field of the ultrahigh voltage post insulator under impulse voltage

Content Provider	IEEE Xplore Digital Library
Author	Yunfeng Xia Xiyang Chen Jianhua Lin Xiaoyou Guo Chuanxu Wang Chuangrong Yin
Copyright Year	2013
Description	Author affiliation: Dongguan Power Supply Bur. of Guangdong Grid, Dongguan, China (Yunfeng Xia; Xiyang Chen; Jianhua Lin; Xiaoyou Guo; Chuanxu Wang; Chuangrong Yin)
Abstract	Higher technical requirements of post insulator for Ultra-high Voltage (UHV) transmission and transformation project have been proposed. The polluted post insulators on service may flashover as a result of lightning. The electrical field and potential distribution of the post insulator have relations with the flashover. In order to study the character of exterior electric field distribution in UHV post insulator, a finite element computation model is set up by theory analysis. The electric field distribution of 1100kV post insulator for substation operated in standard lightning impulse is computed. Research result can be achieved that the electric field distribution curve changed with time is similar to the excitation source of thunder. The electric field of the first and the last big or small umbrella is large, and the middle umbrella is relative small. The biggest electric field lies in the insulation jacket surface, which is a serious challenge for insulating medium.
Sponsorship	IEEE Dielectr. Electr. Insul. Soc.
Starting Page	366
Ending Page	369
File Size	493645
Page Count	4
File Format	PDF
ISBN	9781479925971
DOI	10.1109/CEIDP.2013.6748229
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric fields Insulators Finite element analysis Lightning Electrodes Metals finite element ultra-high voltage post insulator lightning impulse electric field
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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