软母线连接电气设备地震模拟振动台试验研究  

Shake-table Test on Earthquake Simulation of Substation Equipment Interconnected by Flexible Bus

作　　者：谢强[1] 王亚非[2] 

机构地区：[1]同济大学土木工程学院,上海市杨浦区200092 [2]华东电力设计院,上海市普陀区200063

出　　处：《中国电机工程学报》2011年第4期112-118,共7页Proceedings of the CSEE

基　　金：科技部国家重点实验室基金项目(SLDRCE10-B-01);教育部霍英东教育基金会优选资助项目(114021);国家电网公司科技项目(2008-508)~~

摘　　要：为研究地震作用下变电站软母线连接电气设备间的动力相互作用,进行实际设备与软母线连接体系的地震模拟振动台试验。通过对设备间无软母线以及连接不同松弛度软母线的设备动力响应的比较分析,得出软母线对电气设备的影响规律,验证了理论计算模型的正确性。在软母线松弛度较大时,软母线连接电气设备体系的响应与单体设备的响应差别不大。在软母线松弛度较小时,软母线与电气设备间产生了非常明显的相互作用,且这种相互作用在地震动幅值较小时,会对设备产生约束作用;在地震动幅值较大时,由于剧烈的动力效应,母线内会产生较大的张力,对设备产生不利的影响。在进行变电站软母线连接设备的抗震设计中,需要考虑强震作用下母线的影响。In order to study the dynamic interaction of substation equipment interconnected by flexible buses subjected to earthquakes, a shake table test on a full scale model was carried out. After comparing the seismic behavior of the independent equipment with that of the equipment interconnected by the flexible buses of different slackness, the dynamic interaction mechanism of the coupling system was given and the theoretical model for analyzing the seismic interaction was also verified. When the slackness of the flexible bus is large, the difference of the seismic response between the independent equipment and the equipment interconnected by flexible buses is small. On the contrary, when the slackness of flexible bus is small, the interaction between substation equipment and flexible buses is large. An impact tension will happen in the flexible bus when the coupling system is subjected to severe ground motion, which will have a negative influence on the equipment. Therefore, the dynamic interaction of the equipment interconnected by flexible buses should be considered in the seismic design of substation equipment.

关 键 词：电气设备 软母线 相互作用 振动台试验 松弛度 

分 类 号：TM71[电气工程—电力系统及自动化]