Extreme Bending of Composite Insulators on 750 kV Compact Transmission Lines

被引：4

作者：

Sun, Baoqiang ^{[1
]}

Hou, Lei ^{[2
]}

Zhang, Chuyan ^{[1
]}

Guan, Zhicheng ^{[1
]}

Wang, Liming ^{[1
]}

MacAlpine, Mark ^{[1
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

[2] State Grid Cooperat China, Ac Project Construct Branch, Beijing 100140, Peoples R China

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2010年 / 17卷 / 06期

关键词：

Phase-to-phase composite spacer; compact line; computer insulation; post-buckling experiment; mechanical characteristics; large deflection theory;

D O I：

10.1109/TDEI.2010.5658229

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In designing and constructing the first 750 kV double-circuit compact transmission line, much pioneering work is necessitated in the choice of tower, insulator strings and phase-to-phase spacers. In this paper the mechanical characteristics of three possible phase-to-phase composite spacers for such compact transmission lines are considered in respect of very large bending of the spacer. A large deflection theory is introduced to calculate the lateral deflections and longitudinal compressions caused by applied axial loads and these are compared with the results of tests on three spacers of different lengths and diameters. Agreement between calculation and test results was good and the necessity for the larger diameter demonstrated. No permanent damage due to the extreme bending was found and two of the spacer samples were found to be suitable for use in the compact transmission lines with a good safety margin in respect of such bending

引用

页码：1781 / 1786

页数：6