Research on Insulation State Evaluation and Detection Technology for 40.5kV Switchgear Wall Bushing
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更新:2022-08-29 15:51:31 浏览:111次
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摘要
Wall bushing is the core insulator of 40.5kV air insulation switchgear, They often appears partial discharge, insulation aging, grounded breakdown, etc. The main reason is the partial discharge of the equipotential line for the wall bushing. In this paper, based on the electric field simulation of the equipotential line, the feasibility of the traditional live detection method is given. The characteristic gas detection method is proposed through air electrolysis, thermal decomposition, early warning of the development trend of the internal suspension defect state. It proposes corresponding preventive measures to avoid the development of internal suspension defect of wall bushing into a sudden grounding, and ensure the reliability of the system operation.
关键词
switchgear; wall bushing; equipotential line; electric field simulation; state detection
稿件作者
niu bo
Power Research Institute of State Grid Ningxia Power Co.
Ying Wei
Power Research Institute of the State Grid Ningxia Power Company Limited
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