Correlation Characteristics Comparison of SF 6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects

Dong Yang, Ju Tang, Xu Yang, Ke Li, Fuping Zeng, Qiang Yao, Yulong Miao and Lincong Chen
Additional contact information
Dong Yang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Ju Tang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Xu Yang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Ke Li: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Fuping Zeng: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Qiang Yao: Electric Power Research Institute, Chongqing Power Company, Chongqing 401123, China
Yulong Miao: Electric Power Research Institute, Chongqing Power Company, Chongqing 401123, China
Lincong Chen: Electric Power Research Institute, Hainan Power Grid Co., Ltd. Haikou 570100, China

Energies, 2017, vol. 10, issue 8, 1-12

Abstract: Aimed to clarify the correlation characteristics between the internal partial discharge (PD) in negative direct current (DC) gas insulated system (GIS) and gas pressure initiated by two typical defects (i.e., free-metal particles and metal protrusion), this study on PD decomposition of sulfur hexafluoride (SF 6 ) was investigated under different pressures on the basis of constructing a SF 6 decomposition experimental platform with DC PD. Free-metal particles and metal protrusion in a GIS were simulated using a spherical-bowl electrode and a needle-plate electrode, respectively. Trends and differences in the performance of SF 6 decomposition components SOF 2 , SO 2 F 2 , CO 2, and SO 2 at different pressures were compared and analyzed by experiments under different defects. Based on gas microscopic ionization theory, the relationship between the decomposition component and gas pressure was deduced and verified. The concentrations of different decomposition components were found to vary with the change in gas pressure under different defects, whereas the characteristic ratios of decomposition components versus gas pressure showed a similar trend.

Keywords: SF6; partial discharge (PD); direct current (DC); gas pressure; metal protrusion defect; free metal particles defect (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: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/8/1085/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/8/1085/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:8:p:1085-:d:105783

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().