Experimental Study and Analysis on Seismic Performance of ±800 kV UHVDC Composite Post Insulator Interconnected by Rigid Bus

被引：0
|
作者：
Xie Q. [1 ,2 ]
Zhang Y. [1 ,3 ]
He C. [1 ]
Yang Z. [1 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] Key Laboratory of Performance Evolution and Control for Engineering Structures, Ministry of Education, Tongji University, Shanghai
[3] Shibei Electricity Supply Company of State Grid Shanghai Municipal Electric Power Company, Shanghai
来源：
Gaodianya Jishu/High Voltage Engineering | 2020年 / 46卷 / 02期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Composite post insulator; Interconnected equipment; Rigid bus; Seismic responses; Shaking table test;
D O I：
10.13336/j.1003-6520.hve.20190424010
中图分类号：
学科分类号：
摘要：
In order to investigate the seismic performance of UHVDC composite post insulators and simplified calculation method for equipment interconnected by rigid bus, shaking table tests on a stand-alone composite post insulator and a interconnected system were carried out. The acceleration responses of key locations and root strain responses of post insulators were measured. Displacement responses at the top of post insulators were obtained by integral. The results show that the maximum root stress of the tested composite post insulators is lower than the allowable stress, and its behavior can satisfy the requirements of electrical equipment seismic response. All the peak acceleration amplification factor at the top of support, displacement responses at the top of post insulator, and root strains of insulators in an interconnected system, compared with those of a stand-alone composite post insulator, will decrease to an extent when subjected to the same input ground motion. The interaction between the rigid bus and post insulator can be simplified as linear spring, which constrains the seismic responses of equipment items. The seismic responses of equipment items in the interconnected system can be calculated and verified according to those of the stand-alone equipment when the equipment items are the same or of similar dynamic characteristics. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：626 / 633
页数：7
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