中文摘要：

全户内式变电站具有节约用地、外形美观等优点,但囿于电气布置工艺要求,使结构规则性不易满足。目前该类结构工程实例极少,缺乏实震检验,且相关研究尚不充分。本文以某拟建330kV全户内式变电站结构为研究对象,对其进行动力特性及地震反应分析,得到了结构在多遇和罕遇地震作用下的反应,总结了结构的地震反应特点,评估了其抗震性能,并明确了抗震薄弱部位及破坏机理。结果表明,多遇地震下,结构层间位移角满足规范要求,但过大的楼面加速度恶化了其上设备的运行环境;罕遇地震下,结构整体或主变压器所在局部发生倒塌破坏,难以抵御罕遇水准的地震作用。建议采用隔减震技术,提高结构的抗震性能及设备的安全储备。

英文摘要：

The whole indoor substation has many advantages, such as land conservation and beau tiful appearance, but it is restricted to the requirements of corresponding electrical layout process, which makes it difficult to meet structural regularity. At present, there are few structural engineering cases of this kind; they are lack of real earthquake tests, and the related researches are inadequate. Based on a proposed 330 kV whole indoor substation structure, dynamic characteristics and seismic responses of the structure are studied in this paper. The study obtains the structure＇s seismic responses under frequent and rare earthquakes, summarizes its seismic response characteristics, evaluates its seismic performance, and clears its anti-seismic weak position and failure mechanism. The results show that the interlayer drift ratio of structure meets code requirement under frequent earthquakes, but the excessive floor acceleration deteriorates equip- ment＇s operating environment; the whole structure or the local section that places main transformer collapses under rare earthquakes, and it is difficult for the structure to resist rare earthquake. The seismic mitigation or isolation technique is suggested to use to improve seismic per- formance of structure and safety reserve of electrical equipment.