Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects
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 hexafl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/10/8/1085 |
| _version_ | 1798039599272951808 |
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| author | Dong Yang Ju Tang Xu Yang Ke Li Fuping Zeng Qiang Yao Yulong Miao Lincong Chen |
| author_facet | Dong Yang Ju Tang Xu Yang Ke Li Fuping Zeng Qiang Yao Yulong Miao Lincong Chen |
| author_sort | Dong Yang |
| collection | DOAJ |
| description | 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 (SF6) was investigated under different pressures on the basis of constructing a SF6 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 SF6 decomposition components SOF2, SO2F2, CO2, and SO2 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. |
| first_indexed | 2024-04-11T21:56:06Z |
| format | Article |
| id | doaj.art-9e9f83d0344f482e8dc93a95a64b81e0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:56:06Z |
| publishDate | 2017-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-9e9f83d0344f482e8dc93a95a64b81e02022-12-22T04:01:06ZengMDPI AGEnergies1996-10732017-07-01108108510.3390/en10081085en10081085Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical DefectsDong Yang0Ju Tang1Xu Yang2Ke Li3Fuping Zeng4Qiang Yao5Yulong Miao6Lincong Chen7School of Electrical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Electrical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Electrical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Electrical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Electrical Engineering, Wuhan University, Wuhan 430072, ChinaElectric Power Research Institute, Chongqing Power Company, Chongqing 401123, ChinaElectric Power Research Institute, Chongqing Power Company, Chongqing 401123, ChinaElectric Power Research Institute, Hainan Power Grid Co., Ltd. Haikou 570100, ChinaAimed 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 (SF6) was investigated under different pressures on the basis of constructing a SF6 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 SF6 decomposition components SOF2, SO2F2, CO2, and SO2 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.https://www.mdpi.com/1996-1073/10/8/1085SF6partial discharge (PD)direct current (DC)gas pressuremetal protrusion defectfree metal particles defect |
| spellingShingle | Dong Yang Ju Tang Xu Yang Ke Li Fuping Zeng Qiang Yao Yulong Miao Lincong Chen Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects Energies SF6 partial discharge (PD) direct current (DC) gas pressure metal protrusion defect free metal particles defect |
| title | Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects |
| title_full | Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects |
| title_fullStr | Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects |
| title_full_unstemmed | Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects |
| title_short | Correlation Characteristics Comparison of SF6 Decomposition versus Gas Pressure under Negative DC Partial Discharge Initiated by Two Typical Defects |
| title_sort | correlation characteristics comparison of sf6 decomposition versus gas pressure under negative dc partial discharge initiated by two typical defects |
| topic | SF6 partial discharge (PD) direct current (DC) gas pressure metal protrusion defect free metal particles defect |
| url | https://www.mdpi.com/1996-1073/10/8/1085 |
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