Abstract
Large oil-immersed transformers are an important part of the transmission and distribution network in power systems. Power transformers are the main noise source of substations. Because of the uneven manufacturing process, aging equipment, long-term operation, and close distance from sensitive points, the problem of transformer noise pollution has become increasingly prominent. In this paper, the transmission and analysis model is established for transformer sound waves on the interface between insulating oil and tank body according to the sound wave propagation rule in complicated medium, and the simplified acoustic simulation model is constructed for large oil-immersed transformers by simulating the vibration noise of transformer core with monopole sound source, with which, the sound field distribution rule inside and outside the transformer tank structure is obtained, and finally, the influence factors for noise distribution are given. The results of the study provide control basis for reducing transformer noise.
Highlights
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
%DVHG RQ WKH VLPXODWLRQ RI FRUH YLEUDWLRQ XVLQJ PRQRSROH VRXQG VRXUFH WKH LQIOXHQFH UXOH RI PHGLXP SDUDPHWHUV LQ RLO RQ VRXQG ILHOG LV REWDLQHG E\ HVWDEOLVKLQJ YDULRXV SDUDPHWHUV RI LQVXODWLQJ RLO VXFK DV GHQVLW\ VRXQG YHORFLW\ DQG WHPSHUDWXUH 2Q IOXLGVROLG PHGLXP LQWHUIDFH WKH FRXSOLQJ HIIHFW RI WKH EHQGLQJ ZDYH RI WDQN VWUXFWXUH LV SXW DVLGH WHPSRUDULO\ DQG WKH G\QDPLF FKDUDFWHULVWLFV RI WKH VWUXFWXUH LPSRVHV QR GLUHFW LQIOXHQFH RQ WKH SURSDJDWLRQ DQG UDGLDWLRQ RI VRXQG ZDYH
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
Summary
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
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
