Research on Flashover Process of Uniform and Un-uniform Contaminated Insulator String

DOI

10.2991/icmemtc-16.2016.155How to use a DOI?

Keywords

Flashover; insulator; leakage current; partial arc.

Abstract

In order to clarify the differences of partial arc propagation process and flashover process between uniform and un-uniform contaminated insulator strings, experiments of flashover characteristics on uniform and un-uniform contaminated insulator strings have been made in this paper. The result indicates that the partial arc initial voltage decrease with increasing ESDD in uniform contamination distribution situation, relatively, in situation of un-uniform contamination distribution, the initial voltage of partial arc not only relevant to ESDD of the whole insulator string, but also the distribution of pollution layer. In the context uniform contamination distribution, the partial arcs develop as progressive-style; and in the case of un-uniform contamination distribution, the propagating mode of partial arcs is progressive-style and leap-style alternating. Assume that ESDD value of the whole strings constant, the number and lightness of partial arcs would decrease with the reduction of ratio between upper and lower surface ESDD values, and Arc-over occurrence probability as well. High amplitude pulses of leakage circuit exist in the course of flashover duration.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yawei Li
AU  - Xinghai Zhang
AU  - Longchen Liu
AU  - Zongxi Zhang
AU  - Xiaolei Yang
AU  - Huan Bai
PY  - 2016/04
DA  - 2016/04
TI  - Research on Flashover Process of Uniform and Un-uniform Contaminated Insulator String
BT  - Proceedings of the 2016 3rd International Conference on Materials Engineering, Manufacturing Technology and Control
PB  - Atlantis Press
SP  - 786
EP  - 791
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmemtc-16.2016.155
DO  - 10.2991/icmemtc-16.2016.155
ID  - Li2016/04
ER  -