电网技术2018，Vol.42Issue(1)：140-146,7.DOI:10.13335/j.1000-3673.pst.2017.1149
±800kV特高压直流穿墙套管地震模拟振动台试验研究
Shaking Table Tests on ±800 kV UHV DC Wall Bushing
摘要
Abstract
UHV DC wall bushings are important components in converter substations.In order to evaluate their seismic performance and dynamic responses under seismic action,shaking table tests on a full-scale mock ±800 kV wall bushing were carried out.Dynamic characteristics were obtained with white noise excitation.Displacements,strains and accelerations of critical parts of the bushing under different input ground motions with different peak ground accelerations were measured.Results indicated that there were large displacements on top of the bushing and large stresses at bottom cross section.Relative displacements between composite bushing and central conductor were large.Redundant of buswork at the end of the bushing should be large enough to eliminate negative impacts between bus connection and wall bushing.Countermeasures should be taken to increase stress safety factor,and structure inside the bushing should be optimized to reduce relative displacements between conductor and composite bushing.关键词
特高压穿墙套管/摇摆振动/振动台试验/动力特性/地震响应Key words
UHV wall bushing/rocking vibration/shaking table test/dynamic properties/seismic responses分类
信息技术与安全科学引用本文复制引用
谢强,何畅,杨振宇,卓然..±800kV特高压直流穿墙套管地震模拟振动台试验研究[J].电网技术,2018,42(1):140-146,7.基金项目
教育部霍英东教育基金会优选资助课题(114021) （114021）
科技部国家重点实验室基金课题(SLDRCE10-B-01).Fok Ying Tung Education Foundation for Young Scientists of Ministry of Education in China (114021) （SLDRCE10-B-01）
State Key Laboratory Foundation of Ministry of Science and Technology in China (SLDRCE10-B-01). （SLDRCE10-B-01）
