TY - JOUR
T1 - Investigation of overall and local vibration characteristics of disk-type windings
AU - Zhang, Fan
AU - Ji, Shengchang
AU - Naranpanawe, Lakshitha
AU - Ma, Hui
AU - Ekanayake, Chandima
AU - Saha, Tapan
AU - Zhu, Lingyu
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2020.
PY - 2020/9/18
Y1 - 2020/9/18
N2 - This study investigates the overall and local vibration characteristics of disk-type windings in power transformers. The influence of clamping pressure relaxation and pressboard aging on windings' overall modal characteristics is studied. Individual conductors in a winding can vibrate independently and have the local vibration from that of overall windings. The local vibration characteristics of conductors under hoop tension, axial bending and the loss of clamping pressure are investigated. It is found that the clamping pressure relaxation and pressboard aging lead to the decrease of natural frequencies but the faulty conductors result in the increasing number of natural frequencies.
AB - This study investigates the overall and local vibration characteristics of disk-type windings in power transformers. The influence of clamping pressure relaxation and pressboard aging on windings' overall modal characteristics is studied. Individual conductors in a winding can vibrate independently and have the local vibration from that of overall windings. The local vibration characteristics of conductors under hoop tension, axial bending and the loss of clamping pressure are investigated. It is found that the clamping pressure relaxation and pressboard aging lead to the decrease of natural frequencies but the faulty conductors result in the increasing number of natural frequencies.
UR - https://www.scopus.com/pages/publications/85090429179
U2 - 10.1049/iet-gtd.2019.0756
DO - 10.1049/iet-gtd.2019.0756
M3 - 文章
AN - SCOPUS:85090429179
SN - 1751-8687
VL - 14
SP - 3685
EP - 3691
JO - IET Generation, Transmission and Distribution
JF - IET Generation, Transmission and Distribution
IS - 18
ER -