Influence of Different Structure and Specification Parameters on the Propagation Characteristics of Optical Signals Generated by GIL Partial Discharge

Xiaoxin Chen, Chen Li, Liangjin Chen, Hui Wang, Yiming Zang and Weijia Yao
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Xiaoxin Chen: State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
Chen Li: State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
Liangjin Chen: State Grid Zhejiang Electric Power Co. Ltd., Hangzhou 310007, China
Hui Wang: Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yiming Zang: Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Weijia Yao: Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Energies, 2020, vol. 13, issue 12, 1-18

Abstract: Partial discharge (PD) leads to the generation of electrical, acoustic, optical, and thermal signals. The propagation characteristics of optical signals in gas insulated metal-enclosed transmission lines (GIL) are the basis of optical detection research. This paper simulates the propagation of PD optical signals in GIL through modeling GIL with different structures and specification parameters. By analyzing the optical parameters on the probe surface and the detection points when the PD source position is different, the influence of the difference in specifications caused by the voltage level on the propagation of the GIL PD optical signal is studied. The results show that the GIL cavity structure will affect the faculae distribution and the relative irradiance (RI) of the detection surface; the PD source position has a huge impact on the faculae distribution on the detection surface, but has little influence on the RI; as the voltage rises, the faculae distribution on the detection surface becomes more obvious, and the mean of RI decreases. The above results have the reference value for the manufacture of GIL equipment and the research of PD optical detection. When the specular reflection coefficient of surface material is smaller and the diffuse reflection coefficient is larger, the outline of the light spot is clearer, the proportion of brighter parts is larger, and the maximum value of the RI is larger.

Keywords: partial discharge; optical signal; GIL; specification parameter; propagation characteristics; relative irradiance (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: 2020
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