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Hu Yuanchao
Wuhan University

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Analysis of Weak Position in Overhead line under Heavy Icing Condition by Finite Element Method Gan Yan; Liu Chao; Ruan Jiangjun; Li Jinliang; Du Zhiye; Hu Yuanchao
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i7.pp5011-5021

Abstract

Transmission tower is an important component of power system, and heavy iced transmission line has became one of the important factors against its safety and stability in China's power system these years but the transmission line designed from traditional standard can't endure the more worse environment. In this paper, for positioning the weak points of the transmission line under heavy icing accurately and providing accurate positional parameters to online monitoring devices, the strain section model is built to analysis their mechanical properties under icing and wind conditions .In proposed method, the coupling effect between tower and lines is considered, then the weak tower is picked out by strain section model that is combined with eight towers. The single one-tower-two-lines model of weak tower is built to simulate and verify the weak point accurately. Finally the better way is defined to get the location of weak structure combined with the advantages of both models.
Magneto-structural Coupling Field Analysis on the End Winding of a Multi-phase Induction Machine Huang Tao; Ruan Jiangjun; Zhang Yujiao; Hu Yuanchao; Sun Mengyun; Liu Hailong
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

In order to study the steady-state electromagnetic forces acting on the stator end-winding in a multi-phase induction machine during the operation, we conducted a 3-D electromagnetic and mechanical sequential coupling analysis to analyze the stress and the deformation. Both of them are done by the finite-element method. Meanwhile, the geometry of the nose portion is modified for the limited computer resources. The result shows the nose part of the coil ends experiences larger displacement, but von Mises stresses are larger in the straight part. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1283
Co-Authors Du Zhiye Gan Yan Huang Tao Li Jinliang Liu Chao Liu Hailong Ruan Jiangjun Sun Mengyun Zhang Yujiao