Investigation on vibration source and transmission characteristics in power transformers. (August 2019)

• Record Type: Journal Article
• Authors: Zhang, Fan; Ji, Shengchang; Shi, Yuhang; Zhan, Cao; Zhu, Lingyu
• Is Part Of: Applied acoustics. Volume 151(2019)
• Page Start: 99
• Page End: 112
• Publication Date: 2019-08
• Subjects: Power transformers -- Core vibration -- Winding vibration -- Vibration transmission -- Fluid loading effect -- Tank vibration; Acoustical engineering -- Periodicals; Periodicals; 620.2
• DOI: 10.1016/j.apacoust.2019.03.011
• Languages: English
• ISSNs: 0003-682X

Abstract

Abstract: The tank vibration of power transformers comes from alternating forces acting on the core and windings. It is meaningful to study the vibration sources and the transmission characteristics in transformers for interpreting the constitution of the tank vibration specifically. This paper experimentally investigates the coupling between the winding vibration and the core vibration, as well as the vibration transmission characteristics on a single phase power transformer the winding vibration coupled with the core vibration has a broader frequency band than the responses caused by the electromagnetic force. For transmission characteristics, the oil-borne transmission is the main path for the winding vibration, while the structure-borne transmission highly depends on the modal characteristics of the tank. This work improves the understanding of the relationship between the internal vibrations and the tank responses.