电瓷避雷器Issue(2)：66-73,8.DOI:10.16188/j.isa.1003-8337.2025.02.009
基于悬垂瓷质绝缘子串形状系数的风偏角计算方法研究
Calculation Method of Wind Deflection Angle Based on the Shape Factor of Suspended Porcelain Insulator String
摘要
Abstract
The calculation of wind deflection angle is an important factor to prevent flashover accident of transmission line.At present,the rigid rod method for calculating wind deflection angle does not consider the influence of insulator shape on wind-induced response.Through the rigid straight rod method and the results of wind deflection angle obtained by structural dynamic analysis,the improved rigid straight rod method calculation formula considering insulator shape coefficient is obtained.From the wind deflec-tion analysis of the insulator-conductor coupling model,it can be seen that the amplification coefficient of the wind deflection angle increases with the increase of the shape coefficient of the insulator string,and the amplification coefficient tends to decrease when the shape coefficient is in the range of 5.07～5.45,when the shape coefficient is between 5.49 and 7.59,the amplification coefficient increases steadily,and when the shape coefficient is between 7.63 and 8.47,the amplification coefficient increases slowly,the mean values of wind deflection angle magnification coefficient are 1.13,1.18 and 1.35 respectively,which are corresponding to the A,B and C landforms with wind speed of 45 m/s.关键词
悬垂瓷质绝缘子串/刚性直棒法/形状系数/风偏角/放大系数Key words
suspended porcelain insulator string/rigid straight rod method/shape factor/wind deflection angle/magnification factor引用本文复制引用
郑东东,李平,牟晨东,田秋松..基于悬垂瓷质绝缘子串形状系数的风偏角计算方法研究[J].电瓷避雷器,2025,(2):66-73,8.基金项目
国家自然科学基金项目(编号:51508074) （编号:51508074）
国网内蒙古东部电力有限公司建设分公司资助项目(编号:SGTYHT/21-JS-223). Project supported by National Natural Science Foundation of China(No.51508074) （编号:SGTYHT/21-JS-223）
State Grid East Inner Mongolia Electric Power Co.,Ltd.Construction Branch Project(No.SGTYHT/21-JS-223). （No.SGTYHT/21-JS-223）
