Detection of intense partial discharge of epoxy insulation in sf6 insulated equipment using carbonyl sulfide
| Autor: | Qiao Shengya, Shuai Yang, Yu Zheng, Wenjun Zhou, Baoshan Wang, Han Li |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Chemistry 020209 energy Analytical chemistry 02 engineering and technology Epoxy 01 natural sciences Switchgear Trace gas chemistry.chemical_compound visual_art 0103 physical sciences Partial discharge 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Arc flash Gas analysis Electrical and Electronic Engineering Intensity (heat transfer) Carbonyl sulfide |
| Zdroj: | IEEE Transactions on Dielectrics and Electrical Insulation. 23:2942-2948 |
| ISSN: | 1070-9878 |
| DOI: | 10.1109/tdei.2016.7736856 |
| Popis: | Basin insulators in gas insulated switchgear (GIS) are prone to failure by partial discharge (PD). Insulation diagnosis using gas analysis method has advantages of strong anti-interference ability and high detection precision. This paper reports a new characteristic gas Carbonyl Sulfide (COS) for the detection of PD in epoxy insulators of GIS. The generation of COS is verified by experiments with trace gas detection technique. Experimental results indicate that COS is generated only when the intensity of PD is strong enough to cause flashover on the epoxy insulators. The corresponding production mechanisms of COS have been clarified using quantum chemistry calculations. To assess the PD level using COS, the relationship between discharge power and growth law of the concentration of COS is obtained from the experiments, which indicates that COS could be used as an effective characteristic gas to diagnose epoxy solid insulation of GIS concerning high energy discharge. |
| Databáze: | OpenAIRE |
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