NDLI: Electric field distribution characteristics of composite insulator with internal defect

Content Provider	IEEE Xplore Digital Library
Author	Pingyuan Liu Zhonghao Zhang Li Cheng Hongwei Mei Liming Wang
Copyright Year	2015
Description	Author affiliation: Grad. Sch. at Shenzhen, Tsinghua Univ., Shenzhen, China (Pingyuan Liu; Zhonghao Zhang; Li Cheng; Hongwei Mei; Liming Wang)
Abstract	In recent years, some events like insulator rupture failures were encountered in line operation. The inner defects, whose formation and development are heavily affected by electric field, would finally lead to the break of insulators. In order to study the electric field distortion of composite insulators with internal defects, the 3D electrical simulation models of 110kV AC composite insulator were built with the finite element software. According to the existence of some defects in statistics collected by the departments concerned, we have set several different microscopic internal defects of different lengths, different types (dry void, damp void or dielectric breakdown)and of different positions (high voltage side, low voltage side and middle part) between umbrella cover and rod. Besides, hole defects in umbrella cover were also set. Aimed at observing the characteristics of electric field distortion, the observation path was set through the defects in the model. After simulation, the simulation data such as electric filed distribution curves and electric field cloud charts were extracted and analyzed. The simulation results indicated that internal defects serve as the main reason of electric field distortion. Furthermore, the positions, lengths and dielectric constant of internal defects could play an important role on the extent of electric field distortion.
Starting Page	1011
Ending Page	1014
File Size	935931
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295446
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric fields Insulators Distortion Dielectric constant Electric breakdown Finite element analysis Electric potential electric field distribution Finite element method composite insulator internal defect
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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