Effect of groove defect State on propagation of SH0 guided wave in flat steel of grounding network

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Ke-Long, H.E.^1 ; Zhang, Zhou-Quan^2 ; Zhuan, L.I.U.^2 ; Hui, Z.H.U.^1 ; Peng, Guo-Da^1 ; Zhan, T.U.^1

Nanchang Kechen Electric Power Test and Research Co., Ltd, Nanchang

330096, China^1

State Grid Jiangxi Electric Power Research Institute, Nanchang

330096, China^2

关键词: Cross sectional area;    Defect detection;    Echo signals;    Groove defect;    Grounding network;    Propagation process;    Reflection waves;    Substation grounding;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/3/032019/pdf
DOI  :  10.1088/1755-1315/310/3/032019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

By studying the depth and length of groove defect, this paper explores its effect on the propagation of SH0 wave in the flat steel of substation grounding network. The results show that the sensitivity of SH0 wave to defect detection in the propagation process depends on the depth of defect, that is, the corrosion cross-sectional area. Reflection waves are difficult to detect when the defect cross-sectional area is less than 18.75%. The smaller the defect depth, the weaker the echo signal.