TY - GEN
T1 - Influence of moisture contents with a low value below 1500μL/L on SF6 decomposition characteristics
AU - Zhong, Lipeng
AU - Ji, Shengchang
AU - Liu, Kai
AU - Zhu, Lingyu
AU - Xiong, Qing
AU - Xing, Xue
AU - Wang, Yuanyuan
AU - Huang, Haibo
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2017/8/17
Y1 - 2017/8/17
N2 - There inevitably exists trace level of water in the SF6 insulated equipment. Previous research has shown that the decomposition characteristics of SF6 has close relationship with the moisture content. In order to study the influence of moisture under low volume fraction on discharge and decomposition characteristics of SF6. An experimental and testing platform for SF6 gas-insulated electrical equipment was designed in this paper under different moisture contents (147 μL/L, 347 μL/L, 681 μL/L, 909 μL/L, and 1340 μL/L). The influence of moisture on the magnitude of partial discharge caused by metal protrusions defect as well as the content variation of SOF2, SO2F2, SO2, CO2 were observed in detail. The results indicate that average discharge amount and overall magnitude of charge decrease first and then increase with the increasing volume fraction of moisture. The quantitative ordering of the decomposition products is found to be SOF2 > SO2F2 > CO2 > SO2. H2O will promote the formation of all the four products, with a stronger influence on the sulfur-containing products than CO2. Besides, the value of φ(SOF2+SO2+SO2F2)/φ(CO2) presents overall increasing trend with moisture content. It ultimately increases to a stable value about 2.5-3 under low moisture condition (<681 μL/L). The value of φ(SO2F2)/φ(SOF2+SO2) maintains stable with the variation of moisture. It is about 0.13-0.3 under low moisture content. Thus, the detection method of SF6 decomposition products should be utilized with the consideration of moisture content.
AB - There inevitably exists trace level of water in the SF6 insulated equipment. Previous research has shown that the decomposition characteristics of SF6 has close relationship with the moisture content. In order to study the influence of moisture under low volume fraction on discharge and decomposition characteristics of SF6. An experimental and testing platform for SF6 gas-insulated electrical equipment was designed in this paper under different moisture contents (147 μL/L, 347 μL/L, 681 μL/L, 909 μL/L, and 1340 μL/L). The influence of moisture on the magnitude of partial discharge caused by metal protrusions defect as well as the content variation of SOF2, SO2F2, SO2, CO2 were observed in detail. The results indicate that average discharge amount and overall magnitude of charge decrease first and then increase with the increasing volume fraction of moisture. The quantitative ordering of the decomposition products is found to be SOF2 > SO2F2 > CO2 > SO2. H2O will promote the formation of all the four products, with a stronger influence on the sulfur-containing products than CO2. Besides, the value of φ(SOF2+SO2+SO2F2)/φ(CO2) presents overall increasing trend with moisture content. It ultimately increases to a stable value about 2.5-3 under low moisture condition (<681 μL/L). The value of φ(SO2F2)/φ(SOF2+SO2) maintains stable with the variation of moisture. It is about 0.13-0.3 under low moisture content. Thus, the detection method of SF6 decomposition products should be utilized with the consideration of moisture content.
KW - Decomposition characteristics
KW - Metal protrusions defect
KW - Moisture contents
KW - Partial discharge
KW - SF
UR - https://www.scopus.com/pages/publications/85029460244
U2 - 10.1109/IPMHVC.2016.8012850
DO - 10.1109/IPMHVC.2016.8012850
M3 - 会议稿件
AN - SCOPUS:85029460244
T3 - 2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016
SP - 315
EP - 319
BT - 2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016
Y2 - 5 July 2016 through 9 July 2016
ER -