Simulation Study on Damage Localization of Large Generator Stator Insulation Based on Guided Waves

Authors

Li Hao, School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;
Ruihua Li, School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;
Hu Bo, School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;
Pan Ling, School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;
Qiyi Guo, School of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;

Abstract

Abstract: A stator insulation damage localization method based on guided waves was proposed. The dispersive curve was obtained by solving the Rayleigh-Lamb equations. Finite structure models of four typical groundwall insulation damage, i.e. void, delamination, longitudinal and transverse crack were established by FEM software Abaqus, in which the excitation, acquisition and propagation properties of guided wave were numerical simulated. Based on that, wavelet scalogram was used to extract the flight time of damage-scattered wave to obtain the insulation damage location. Analysis was conducted to compare the location precision under each wave modes. Simulation results indicate that the method is effective to locate insulation damage with a high precision.

Recommended Citation

Hao, Li; Li, Ruihua; Bo, Hu; Ling, Pan; and Guo, Qiyi (2020) "Simulation Study on Damage Localization of Large Generator Stator Insulation Based on Guided Waves," Journal of System Simulation: Vol. 27: Iss. 11, Article 28.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss11/28

First Page

2816

Revised Date

2015-04-23

DOI Link

https://doi.org/

Last Page

2821

CLC

TM3

Recommended Citation

Li Hao, Li Ruihua, Hu Bo, Pan Ling, Guo Qiyi. Simulation Study on Damage Localization of Large Generator Stator Insulation Based on Guided Waves[J]. Journal of System Simulation, 2015, 27(11): 2816-2821.