Transformer Noise
Transformer Noise
(OP)
Any ideas on reducing noise from a 230/115 kv transformer without reducing operating voltage? The noise occurs when the transformer operates at 107% nominal voltage.
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RE: Transformer Noise
Likely the NLTC has been set for highest ratio? [I have no immediate reference, but ISTR acoustical noise roughly increases with the square of voltage. 1.07 puV <> 1.145 pu noise]
RE: Transformer Noise
RE: Transformer Noise
Looked through the online IEEE T-PWRD index, and only found material on transformer acoustic measurement techniques, not mitigation—short of noise cancellation by active means. The V² r∙o∙t is from an associate that has considerable power-transformer experience.
[CIGRE shows some interesting titles, but no online access to text here.]