Acoustic noise caused by a.c. corona on conductors: Results of an experimental investigation in the anechoic chamber

The paper describes an experimental research performed in the anechoic chamber with the aim of investigating the qualitative and quantitative characteristics of the acoustic noise caused by a.c.corona on conductors. Conductors of different type and size, smooth and stranded, with and without surface...

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Bibliographic Details
Published inIEEE transactions on power apparatus and systems Vol. 94; no. 2; pp. 591 - 601
Main Authors Sforzini, M., Cortina, R., Sacerdote, G., Piazza, R.
Format Journal Article
LanguageEnglish
Published IEEE 01.03.1975
Subjects
Acoustic noise
Acoustic testing
Anechoic chambers
Conductors
Corona
Frequency
Instruments
Noise level
Surface treatment
Voltage
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Summary:The paper describes an experimental research performed in the anechoic chamber with the aim of investigating the qualitative and quantitative characteristics of the acoustic noise caused by a.c.corona on conductors. Conductors of different type and size, smooth and stranded, with and without surface treatment, were tested dry and wet within a large range of voltage gradients. On the basis of the results obtained, a number of conclusions is drawn concerning: the nature of the phenomenon, and in particular the characteristics of the frequency spectra; the laws related to noise variation with voltage gradient, conductor diameter and number of subconductors per phase; the physiological effects of the audible noise.
ISSN:0018-9510
2995-6323
DOI:10.1109/T-PAS.1975.31887