特高压电气设备瓷套与法兰连接弯曲刚度的计算系数  

Coefficient of bending stiffness of interconnected parts between ultra-high voltage porcelain bushings and flanges

作　　者：张雪松[1] 代泽兵[1] 卢智成[1] 曹枚根[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《武汉大学学报（工学版）》2014年第6期794-799,858,共7页Engineering Journal of Wuhan University

基　　金：中国电力科学研究院院士基金(编号:GC82-09-001);国家电网基金项目(编号:SGKJJSKF(2008)466)

摘　　要：通过对特高压瓷套与法兰连接部位弯曲刚度试验得到了特高压瓷套与法兰连接部位弯曲刚度计算系数.将此计算系数应用到模拟特高压瓷套的有限元计算中,瓷套的基频及顶部位移与试验结果比较吻合,增大该计算系数后,特高压瓷套的频率随之增大;当该系数增大到4.0×108时,瓷套的基频基本不改变.最后给出了特高压设备的计算实例,根据此计算系数计算的设备应力、基频与试验结果吻合,验证了特高压瓷套与法兰连接部位弯曲刚度计算系数的正确性.应用此计算系数可以提高特高压电气设备仿真计算的精度.To get the coefficient of bending stiffness interconnected parts of ultra-high voltage porcelain bushings and flanges,the bending stiffness test has been conducted.The calculated results applied the coefficient to the finite element calculation of ultra-high voltage porcelain bushings show that the fundamental frequency and the displacement at the top of the bushings are consistent with the experimental results.With the increase of the coefficient,the fundamental frequency of the ultra-high voltage bushings grows accordingly.But,when the coefficient increases to 4.0 × 108,the fundamental frequency of the ultra-high voltage bushings can not be changed.Finally,a calculation example of UHV equipment is given.The comparison of computed results,including porcelain bushing stress and the fundamental frequency,with experimental results of 1 100 k V ultra-high voltage arrester shows good agreement,so as to demonstrate the correctness of the coefficient.The research results play an important role in enhancing the calculation accuracy of ultra-high voltage.

关 键 词：特高压瓷套 弯曲刚度计算系数 有限元分析 回归分析 基频 应力 

分 类 号：TM854[电气工程—高电压与绝缘技术]