Current transformers are important electrical equipment in hydropower plants.With the increase of operation years and the impact of the surrounding environment,the equipment,ageing of the equipment will lead to safety haz-ards.This article provides a detailed introduction of the maintenance and replacement methods for the end shield of the oil-immersed current transformer.Also,some prevention measures are proposed.It suggested that the on-site manage-ment of the maintenance work should be strengthened.Every maintenance operation should strictly follow the relevant technical measures,construction plans,operation procedures and technical requirements.Maintenance records should be kept well and strict on-site quality acceptance should be carried out.Inspection of the equipment should be strength-ened.If the oil level in the current transformer rises rapidly or oil leakage occurs in the oil tank,porcelain sleeves or other parts,the equipment should be stopped immediately and treated as soon as possible.Also,preventive tests should be carried out regularly.Only after the test data is qualified,can the equipment be put into operation.
关键词
电力系统/电流互感器/末屏/安全隐患/更换
Key words
power system/current transformer/end shield/potential safety hazard,replacement
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