Traditional overhaul of oil less equipment is mainly based on periodic power outage inspection,but it is difficult to find out the abnormalities at the first time,which easily misses the best time to overhaul and ultimately leads to an explosion accident.The current on-line monitoring methods such as leakage current,dielectric loss and partial discharge are also difficult to monitor the fault information of equipment in real time.To solve these problems,firstly the oil pressure analysis model for oil-immersed bushing and current transformer is established.And then,a technical route of condition-based maintenance is proposed for oil less equipment based on oil pressure online monitoring,fault early warning,oil sampling with load,chromatography analysis and defect handling.Further,a complete set of oil pressure online monitoring equipment,live calibration equipment and live oil sampling and refueling equipment are developed.Finally,with typical on-site cases,the feasibility of condition-based maintenance technology based on oil pressure monitoring is verified.
oil less equipmentoil pressure monitoringoil-immersed current transformeroil-immersed bushingcondition-based maintenance
维普
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