Static and dynamic mechanical characteristic comparison research of v-type insulator string under gale condition

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Wang, J.C.^1 ; Zhu, S.W.^1 ; Peng, B.^2 ; Duan, S.B.^2 ; Li, P.^1

China Electric Power Research Institute, Beijing

100055, China^1

State Grid Corporation of China, Beijing

100031, China^2

关键词: Calculation results;    Comparison analysis;    Dynamic calculations;    Dynamic characteristics;    Dynamic mechanical;    Dynamic wind loads;    Mechanical characteristics;    Non-linear finite elements;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012094/pdf
DOI  :  10.1088/1755-1315/61/1/012094

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Application of V-type insulator string is most effective method in gale area to reduce wind deflection flashover, and dynamic characteristic of the V-type insulator string under action of pulse wind is an important factor to affect design of the V string. In order to clarify mechanical characteristic of the V-type insulator string under action of dynamic wind load, which is different to traditional rigid straight rod static mechanical method, finite element method is taken to calculate forcing of the V-type insulator string under action of pulse wind. Pulse wind speed time history with space relativity is considered and is converted to wind load time history, establishing non-linear finite element coupling model of insulator string - conductor, calculating mechanical characteristic of V-type insulator string under excitation of pulse wind, analyzing dynamic yield characteristic of the insulator under different angle of the V string, and providing theoretical basis for engineering design through comparison analysis between dynamic calculation result and static calculation result.