摘要
以在建中的特高压输变电工程为背景,针对1000kV同塔双回输电线路铁塔和8分裂导线的设计要求,进行了气弹模型的风洞试验。按照气弹模型相似理论严格模拟了输电塔、8分裂导线的气动外形和动力特性,制作了五塔四线模型并模拟了体系的边界条件,研究了单塔和塔线体系在均匀流场和紊流场的风致响应。通过对试验结果的分析,获得了塔线体系的动力特性和风振响应,并首次通过光纤光栅技术测得了气弹模型输电塔结构、8分裂导线和绝缘子的动应变。试验结果探究了导线和绝缘子在风荷载作用下对特高压输电塔结构的影响,并为现行的输电线路设计规程和特高压输电塔的设计提供了参考。
Taking the UHV transmission project under construction as background,we performed a wind tunnel test on a 1000 kV double circuit tower-eight bundled conductors coupling system through an aeroelastic model to study the wind induced behavior. Based on the aeroelastic model similarity theory,the dynamic property and aeroelastic shape of the UHV tower and eight bundled conductors were simulated,and a five-tower four-span model was established to simulate the boundary conditions. Moreover,wind responses of single tower and tower-conductor coupling system under uniform flow and turbulent flow were studied. The dynamic strains of the transmission tower members,eight bundled conductors and insulators were measured using FBG fiber sensors in the test. The wind effects and loading path of conductors and insulators on the transmission tower under wind action were investigated. The test results can be used for both the modification of current design code for transmission lines and UHV tower design.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2010年第4期900-906,共7页
High Voltage Engineering
基金
国家自然科学基金(50508026
50778135)
教育部霍英东教育基金会优选资助课题(114021)
国家电网公司科技项目~~
关键词
1000kV
双回输电塔线
耦联体系
8分裂导线
风洞试验
气弹模型
1000 kV
double circuit transmission tower-conductor
coupling system
eight bundled conductors
wind tunnel test
aeroelastic model
