Detection and Analysis of Insulating Oil for Transformer Vacuum On-Load Tap-Changer
The transformer on-load tap changer(hereinafter referred to as the tap changer)is the core component of the transformer to complete the output voltage regulation without power failure.In recent years,vacuum on-load tap changers have been used in power grid companies.The insulation oil detection of vacuum on-load tap changers is an important means to ensure its safe and stable operation.In this paper,through the practice of testing and analyzing the insulating oil of the vacuum on-load tap-changer in 45 main transformers above 110 kV in a certain bureau,the relevant operation and maintenance suggestions are put forward.
Tap switchInsulating oilDissolved gas analysis in oilBreakdown voltage