Research on magnetic flux leakage characteristics and identification methods under typical transformer winding defects
Current research lacks a comprehensive analysis of magnetic flux leakage patterns caused by transformer winding defects， which complicates defect detection. To address this， A 3D finite element simulation model of a 110 kV transformer was developed to simulate the winding defects. A study investigat...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
zhejiang electric power
2025-02-01
|
| Series: | Zhejiang dianli |
| Subjects: | |
| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=fd0c6e48-db2b-4dd1-b319-d85286620e39 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Current research lacks a comprehensive analysis of magnetic flux leakage patterns caused by transformer winding defects， which complicates defect detection. To address this， A 3D finite element simulation model of a 110 kV transformer was developed to simulate the winding defects. A study investigated magnetic flux leakage under different defect locations and severities. Results show that winding deformations cause significant axial magnetic flux leakage variations between high and low-voltage windings， with an expanded distortion range. In cases of inter-turn short-circuit defects， the surge in current within the short-circuited winding leads to noticeable distortions in the internal magnetic flux leakage， both between high and low-voltage windings and on the outer side of the high-voltage winding. A comparison between experimentally measured leakage distributions and the simulation results confirmed the accuracy of the finite element model. Additionally， detection criteria based on the simulation model were developed， allowing for the identification of localized winding deformations and few-turn short-circuit defects. |
|---|---|
| ISSN: | 1007-1881 |