View in EDS

Detection of intense partial discharge of epoxy insulation in sf6 insulated equipment using carbonyl sulfide.

Saved in:
Bibliographic Details
Title: Detection of intense partial discharge of epoxy insulation in sf6 insulated equipment using carbonyl sulfide.
Authors: Zhou, Wenjun1, Zheng, Yu1, Yang, Shuai1, Li, Han1, Wang, Baoshan2, Qiao, Shengya3
Source: IEEE Transactions on Dielectrics & Electrical Insulation. Oct2016, Vol. 23 Issue 5, p2942-2948. 7p.
Subjects: Partial discharges, Epoxy insulators, Gas analysis, Sulfur hexafluoride, Quantum chemistry
Abstract: 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. [ABSTRACT FROM PUBLISHER]
Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract: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. [ABSTRACT FROM PUBLISHER]
ISSN:10709878
DOI:10.1109/TDEI.2016.7736856