Optimal Placement of UHF Sensors for Accurate Localization of Partial Discharge Source in GIS

Rui Liang, Shenglei Wu, Peng Chi, Nan Peng and Yi Li
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Rui Liang: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Shenglei Wu: State Grid Chongqing Economic Research Institute, Chongqing 401121, China
Peng Chi: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Nan Peng: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Yi Li: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China

Energies, 2019, vol. 12, issue 6, 1-15

Abstract: This paper proposes an optimal placement model of ultra-high frequency (UHF) sensors for accurate location of partial discharge (PD) in gas-insulated switchgear (GIS). The model is based on 0-1 program in consideration of the attenuation influence on the propagation of electromagnetic (EM) waves generated by PD in GIS. the optimal placement plan improves the economy, observability, and accuracy of PD locating. After synchronously acquiring the time of the initial EM waves reaching each UHF sensor, PD occurring time can be obtained. Then, initial locating results can be acquired by using the Euclidean distance measuring method and the extended time difference of arriving (TDOA) location method. With the information of all UHF sensors and the inherent topological structure of GIS, the locating accuracy can be further improved. The method is verified by experiment, showing that the method can avoid the influence of false information and obtain higher locating accuracy by revising initial locating results.

Keywords: gas insulated switchgear; partial discharges; electromagnetic wave propagation; optimization; UHF measurement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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