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2014 (Vol. 7, Issue: 9)
Article Information:

Simulation Study of the Relationship between Partial Discharge and Ultrahigh-Frequency Electromagnetic Wave in GIS

Wang Jiang, Qian Yong, Ye Hai-Feng, Meng Zheng-Zheng, Chen Rong, Cao Meng, Sheng Ge-Hao and Jiang Xiu-Chen
Corresponding Author:  Wang Jiang 

Key words:  FDTD, GIS, partial discharge, variation coefficien, , ,
Vol. 7 , (9): 1744-1749
Submitted Accepted Published
March 23, 2013 May 10, 2013 March 05, 2014
Abstract:

When partial discharge occurs in Gas Insulated Switchgear (GIS) with insulation defects, Ultrahigh-Frequency (UHF) electromagnetic wave up to several MHz and GHz will be exited and propagate inside GIS cavity. This study, based on the propagation theory of electromagnetic waves in coaxial waveguide, performs simulation analysis of the relationship between PD pulse form and the exited UHF electromagnetic wave using Finite-Deferential Time-Domain (FDTD) algorithm. First, we study the relationship of partial discharge magnitude and electric field strength of electromagnetic wave. It is found that the changes of partial discharge magnitude have little effect on electric field strength of electromagnetic wave at certain variation rate of PD pulse current. Next, we examine the relationship of variation rate of PD pulse current to electric field strength of electromagnetic wave. It is pointed out that, at a certain partial discharge magnitude, the two are approximately linearly related. Finally, we study the impact of variation rate of PD pulse current on higher mode components. Variation coefficient is used to analyze the proportion of higher mode components in electromagnetic wave. The proportion of higher mode components increases with increasing variation rate of PD pulse current.
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  Cite this Reference:
Wang Jiang, Qian Yong, Ye Hai-Feng, Meng Zheng-Zheng, Chen Rong, Cao Meng, Sheng Ge-Hao and Jiang Xiu-Chen, 2014. Simulation Study of the Relationship between Partial Discharge and Ultrahigh-Frequency Electromagnetic Wave in GIS.  Research Journal of Applied Sciences, Engineering and Technology, 7(9): 1744-1749.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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