Typical defects analysis of metal parts of substation secondary components

2019 International Conference on Advanced Materials and Technology for Sustainable Life

Li, D.K.^1 ; Wang, J.^1 ; Liu, S.X.^2 ; Hou, Z.^2 ; Qiu, C.^3 ; Xie, Y.^1

State Grid Hunan Electric Power Corporation Research Institute, Changsha,Hunan

410007, China^1

Hunan Electric Power Corporation Maintenance Company, Changsha,Hunan

410004, China^2

State Grid Zhuzhou Power Supply Company, Zhuzhou, Hunan

412000, China^3

关键词: Basic principles;    Defects analysis;    Environmental factors;    Long term service;    Metal materials;    Metal parts;    Secondary components;    Selection of materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/587/1/012013/pdf
DOI  :  10.1088/1757-899X/587/1/012013

来源: IOP

【 摘 要 】

The selection of metal materials used in secondary components only considers the conduction of signals, ignoring the possible corrosion and fracture caused by the interaction of environmental factors such as temperature, humidity and harmful ions during the long-term service. Operational and maintenance experience shows that failures of metal parts in secondary components are emerging in endlessly due to improper selection of materials, unqualified materials and unfavourable environmental factors. In this paper, through the analysis of several secondary component failures, the typical defects of metal parts in secondary component are revealed, and some basic principles that should be followed in the selection of metal materials for secondary components are put forward, which can guide the design, acceptance and maintenance of secondary components.