[1] Li Xiaofeng*, J.M.K. MacAlpine, Chen JunwuWang Yan, Zhang Guosheng, et al. A Novel Insulator and Its Characteristics [J]. Journal of Southeast University (English Edition), 2001, 17 (2): 47-51. [doi:10.3969/j.issn.1003-7985.2001.02.011]

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A Novel Insulator and Its Characteristics()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

17

Issue:

2001 2

Page:

47-51

Research Field:

Electrical Engineering

Publishing date:

2001-12-30

Info

Title:

A Novel Insulator and Its Characteristics

Author(s):

Li Xiaofeng^1*;  J.M.K. MacAlpine²;  Chen Junwu¹Wang Yan¹;  Zhang Guosheng¹;  Li Zhengying¹

¹Department of Electrical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
²Department of Electrical Engineering, Hong Kong Polytechnic University, Hong Kong, China

Keywords:

novel insulator;  leakage current;  pollution flashover;  HTVSIR

PACS:

TM854

DOI:

10.3969/j.issn.1003-7985.2001.02.011

Abstract:

Both the ceramic and the composite insulators have their own advantages and disadvantages when compared with each other. It is a reasonable idea to combine their merits together to design a novel insulator. The key measure of the novel insulator suggested in this paper is to add an annular metal sheet coated with high temperature vulcanisation(HTV)silicone rubber(SIR)at the base of the traditional ceramic insulator cap. The HTVSIR covering on the exterior of the metal sheet can lengthen the creepage distance. The metal sheet can uniform the electric stress, reduce its maximum value and modify its direction on one insulator unit and acts as equalizing ring on an insulator string. The factors stated above are the main reasons why the novel insulator has better insulating performance, including lower leakage current and flashover voltage, especially under polluted conditions. Simultaneously, the novel insulator can overcome the disadvantages of the ordinary remedies which have been widely used to improve the performance of ceramic insulators against pollution. The experimental results obtained in the laboratory were in good agreement with the theoretical analysis and demonstrated the novel insulator’s effectiveness.

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Memo

Memo:

* Born in 1969, male, graduate.

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