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Study on the Electromagnetic Shielding Characteristics of GIS Shell

Tao Yang1, Liang Huang1, Jianrong Wu1, Junkai Huang1, Kui Xu1, Yong Zhu2, Wenlong Pang3, and Xixiu Wu3
1.Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang, China
2.Kaili Power Supply Bureau, Guizhou Power Grid Co., Ltd., Kaili, China
3.Wuhan University of Technology, Wuhan, China
Abstract—With the gas insulated substation (GIS) becoming more and more intelligent, secondary equipments with control and communication functions are applied in it. Since the GIS switch operation will produce a series of very fast electromagnetic transient phenomena (VFT), these electromagnetic transient phenomena will affect the secondary intelligent equipment as electromagnetic interference sources, causing its malfunction and even damage. The metal shell of GIS has certain shielding ability for electromagnetic radiation, but there is still no systematic theoretical research on the electromagnetic shielding performance of GIS shell. To this end, this paper quantitatively analyzes the electromagnetic shielding performance of the GIS shell. In order to obtain the shielding performance of GIS shell, a simulation calculation model of electromagnetic wave propagation characteristics in GIS shell based on finite element method is established. The model is used to quantitatively calculate the effectiveness of the GIS shell shielding internal radiant electromagnetic field, and the shielding effectiveness and its relationship with the shell thickness and the shell conductivity are obtained.

Index Terms—GIS shell, electromagnetic transient, electromagnetic shielding, finite element method

Cite:Tao Yang, Liang Huang, Jianrong Wu, Junkai Huang, Kui Xu, Yong Zhu, Wenlong Pang, and Xixiu Wu, "Study on the Electromagnetic Shielding Characteristics of GIS Shell," International Journal of Electrical Energy, Vol. 7, No. 1, pp. 31-35, June 2019. doi: 10.18178/ijoee.7.1.31-35

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