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External UHF Sensor for GIS PD Insulation Defect from Resin Hole

Li Xiao1,2, Xu Yang1,2,*, Guozhi Zhang1,2, Lin Cheng1,2, Yi Jiang1,2, Chuanxian Luo1,2, Jing Zhang1,2

1 Nanrui Group (State Grid Electric Power Research Institute) Co., Ltd., Nanjing, 211006, China
2 Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan, 430074, China

* Corresponding Author: Xu Yang. Email: email

Energy Engineering 2023, 120(5), 1239-1252.


In view of the effective perception demand of PD (Partial Discharge) insulation defect of in-service GIS (Gas Insulated Switchgear), the external UHF (Ultra High Frequency, 0.3−3 GHz) sensing technology for GIS PD insulation defect from resin hole is studied in this paper. Firstly, rectangular waveguide theory is used to analyze the electromagnetic wave propagation characteristics from rectangular resin hole in GIS disc insulator. It is found that the energy of leaked electromagnetic wave mainly concentrates in the frequency band above 1 GHz. Then based on this frequency band characteristics, a cavity-backed bowtie sensor for GIS PD external detection is designed optimized by HFSS finite element software, in band of 1–3 GHz, its maximum VSWR is 7, the minimum is 1.1, the average is 2.9, and in band of 0.3–1 GHz, the maximum and minimum VSWR is 42.8 and 7, the average is 20.6. Finally, a sensor prototype is made, its sensitivity experiment is carried out on 220 kV GIS, experimental results show that the designed sensor can stably detect the PD electromagnetic wave signal leaked from the resin hole, and the signal energy in frequency band range is consistent with the theoretical analysis results.


Cite This Article

APA Style
Xiao, L., Yang, X., Zhang, G., Cheng, L., Jiang, Y. et al. (2023). External UHF sensor for GIS PD insulation defect from resin hole. Energy Engineering, 120(5), 1239-1252.
Vancouver Style
Xiao L, Yang X, Zhang G, Cheng L, Jiang Y, Luo C, et al. External UHF sensor for GIS PD insulation defect from resin hole. Energ Eng. 2023;120(5):1239-1252
IEEE Style
L. Xiao et al., "External UHF Sensor for GIS PD Insulation Defect from Resin Hole," Energ. Eng., vol. 120, no. 5, pp. 1239-1252. 2023.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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