|Table of Contents|

 Inherent vibration features of power transformer windingby finite element method(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2018年04
Page:
51-57
Research Field:
Publishing date:

Info

Title:
 Inherent vibration features of power transformer windingby finite element method
Author(s):
  WANG Feng-hua1 YANG Yi2 HE Miao-zhong1 DU Sheng-lei2LIU Shi2 YANG Xian2
 ( 1. Key Laboratory of Control of Power Transmission and Conversion,Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China; 2. Guangdong Electric Power Company Electric Power Research Institute,Guangzhou 510080,China)
Keywords:
 power transformer winding vibration inherent frequency vibration pattern
PACS:
TM41
DOI:
10.15938/j.emc.2018.04.007
Abstract:
 To further understand and master the inherent vibration features of transformer winding,the3-D finite element model of transformer winding is built to calculate the natural frequency and the corre-sponding vibration pattern. Meanwhile,the model experiment of some real 10k V power transformer wasmade on the transformer winding. The results of simulation and experiment match well,which verifies thecorrectness of the simulation model. It is shown that the vibration patterns corresponding vibration pat-terns were in different shapes and good symmetry when the winding was under normal condition. Whenthe precompression force of transformer winding was changed,the first four-order natural frequencies wereincreased with the increasing of precompression in different amplitudes. The high order natural frequencywas more sensitive to the variations of precompression.

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Last Update: 2018-07-01