Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013)

The Research of The Disturbance of Lightning Strike on Rogowski Coil Current Transformer According to Wavelet Analysis

Authors
Guan-qi Liu, Long Shao, Ting Hu
Corresponding Author
Guan-qi Liu
Available Online March 2013.
DOI
10.2991/iccsee.2013.109How to use a DOI?
Keywords
electronic current transformer, Rogowski coil, Wavelet Analysis, lightning strike
Abstract

Although there are many Rogowski coil current transformers being widely used, its stability and accuracy of measurement is not very good due to the effects of various factors. In practice, there are still some new interfering factors. In this paper, the principle of a new interference factors is analyzed, and the appropriate solution is put forward. The new interference is that when the power system is struck by lightning strike or over-voltage, the induced electromotive force of secondary side of the Rogowski current transformer is significantly interfered because of the fluctuation of capacitive coupling. So it will raise the measured current greatly and cause the measurement error. At last, the protective relaying will trip incorrectly. In this paper, the wavelet transform method is used to analyze the current of the transformer in normal conditions. Then the article analyzes the increased measured current caused by lightning strike and grid faults. And according to the results, the differences will be found which can be used to judge whether the increased current is caused by lightning strike or the grid faults.

Copyright
© 2013, 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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Volume Title
Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013)
Series
Advances in Intelligent Systems Research
Publication Date
March 2013
ISBN
978-90-78677-61-1
ISSN
1951-6851
DOI
10.2991/iccsee.2013.109How to use a DOI?
Copyright
© 2013, 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/).

Cite this article

TY  - CONF
AU  - Guan-qi Liu
AU  - Long Shao
AU  - Ting Hu
PY  - 2013/03
DA  - 2013/03
TI  - The Research of The Disturbance of Lightning Strike on Rogowski Coil Current Transformer According to Wavelet Analysis
BT  - Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013)
PB  - Atlantis Press
SP  - 426
EP  - 429
SN  - 1951-6851
UR  - https://doi.org/10.2991/iccsee.2013.109
DO  - 10.2991/iccsee.2013.109
ID  - Liu2013/03
ER  -