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This paper investigates the impact of load ramping on dissolved gas analysis (DGA) in power transformers, highlighting the correlation between oil sampling time and transformer loading. Experimental results demonstrate that temporary variations in transformer load can lead to inaccurate DGA results, potentially misinterpreting transformer faults due to gas evolution during ramping cycles. The study suggests that optimal oil sampling should occur after a ramping down cycle to achieve more accurate DGA result

Author

vivekanand

Language

EN