Influence and mechanism of pressure on SF6 decomposition components of gas-insulated switchgear under positive DC partial discharge

2018 ◽  
Vol 13 (8) ◽  
pp. 1136-1141 ◽  
Author(s):  
Zhengqin Cao ◽  
Ju Tang ◽  
Yulong Miao ◽  
Ning Zhu ◽  
Qiang Yao ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Gas Insulated Switchgear ◽  
Sf6 Decomposition

Recognition of Protrusion Defect Fault in Gas Insulated Switchgear Base on SF6 Decomposition Product

2018 ◽  
Vol 8 (1) ◽  
pp. 131
Author(s):  
Visa Musa Ibrahim
Keyword(s):  
Preventive Maintenance ◽  
Decomposition Product ◽  
Partial Discharge ◽  
Sulphur Hexafluoride ◽  
Decomposition Products ◽  
Gas Insulated Switchgear ◽  
Product Method ◽  
Ftir Spectrometer ◽  
Sf6 Decomposition ◽  
The Impact

A solid analytic procedure of Gas insulated switchgear condition checking is utilized in this studies as a part of exploration for the detection of sulphur hexafluoride gas (SF6) decomposition by-product because of its high affectability, reliability and anti-electromagnetic obstruction. This is known as chemical decomposition by-product method. A simulated coaxial deterioration chamber was designed and used on the high voltage electrode to re-enact the decomposition of SF6 under the impact of protrusion defect that generates partial discharge in the coaxial chamber at a pressure of 0.2MPa.The chamber is energised at 50kv for the period of 50 hours and the generated partial discharge simulate the decomposition of SF6 gas. The deterioration decomposition products SO2, SOF2, SO2F2, SO2F10, SiF4, CO, C3F8, C2F6 were detected offline by FTIR spectrometer. These deteriorated items and its concentration can be utilized to recognize and distinguish the type and the magnitude of fault in gas insulated switchgear (protrusion fault) before failure occur for the aim of preventive maintenance.

Influence regularity of trace O6 on SF6 decomposition characteristics and its mathematical amendment under partial discharge

2014 ◽  
Vol 21 (1) ◽  
pp. 105-115 ◽  
Author(s):  
Ju Tang ◽  
Fuping Zeng ◽  
Xiaoxing Zhang ◽  
Jianyu Pan ◽  
Yinjun Qiu ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Sf6 Decomposition

Present Situation and Prospect of Internal Sensors for UHF Detection in GIS

2015 ◽  
Vol 738-739 ◽  
pp. 38-41
Author(s):  
Yu Bing Duan ◽  
Hao Zhang ◽  
Jun Yong ◽  
Bo Yang ◽  
Xiao Li Hu ◽  
...  
Keyword(s):  
Performance Indicators ◽  
High Frequency ◽  
Partial Discharge ◽  
Present Situation ◽  
Ultra High Frequency ◽  
Gas Insulated Switchgear ◽  
Discharge Detection

This paper summarizes the application situation of the ultra-high frequency (UHF) method in gas insulated switchgear (GIS) partial discharge detection, as well as the differences between internal and external UHF sensors. The performance indicators of internal sensors are introduced, and five main types of internal sensors are discussed and evaluated. In addition, several problems to be solved are posed for researchers.

scholarly journals A DFT study on the adsorption of Ga-BNNT to SF6 decomposition products under partial discharge

2019 ◽  
Vol 14 ◽  
pp. 102419 ◽  
Author(s):  
Hai Qian ◽  
Jun Deng ◽  
Haibin Zhou ◽  
Xu Yang ◽  
Wei Chen
Keyword(s):  
Partial Discharge ◽  
Dft Study ◽  
Decomposition Products ◽  
Sf6 Decomposition
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