基于双对数正态分布的电瓷型电气设备地震易损性研究  

DOUBLE LOGARITHMIC DISTRIBUTION BASED SEISMIC FRAGILITY ANALYSIS OF PORCELAIN ELECTRICAL EQUIPMENT

作　　者：李吉超[1,2] 尚庆学 罗清宇 王涛 LI Ji-chao;SHANG Qing-xue;LUO Qing-yu;WANG Tao(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin,Heilongjiang 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin,Heilongjiang 150080,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]地震灾害防治应急管理部重点实验室,黑龙江哈尔滨150080 [3]清华大学土木工程系,北京100084 [4]中国建筑科学研究院,北京100013

出　　处：《工程力学》2024年第2期125-136,共12页Engineering Mechanics

基　　金：中国地震局工程力学研究所基本科研业务费专项项目(2019B02);国家自然科学基金青年科学基金项目(51908519);黑龙江省自然科学基金项目(LH2020E023);中国博士后科学基金项目(2021M701937);黑龙江省头雁行动计划项目(3016)。

摘　　要：总结了110 kV和220 kV典型电气设备的地震易损性曲线研究成果,考虑不同研究成果的离散性,基于双对数正态分布给出了抗震能力中值、随机性和不确定性建议值。进一步开展220 kV变电站系统的抗震性能分析,定量评价了变电站的功能性。研究结果表明:双对数正态分布可以较好地反映电气设备地震易损性的离散性,尤其是模型、方法等原因导致的不确定性。变电站系统的抗震能力低于电气设备的抗震能力,设计中应采取措施提高变电站的冗余性。变电站系统抗震性能与电气设备抗震能力中值正相关,与随机性和不确定性呈负相关。Existing data on fragility functions of the 110 kV and 220 kV equipment are summarized and expressed by double logarithmic model to reflect the significant discreteness between different studies.The median capacities,randomness,and uncertainties of major 110 kV and 220 kV equipment are determined.Based on these parameters,the seismic performance,in particularly,the system functionality,of a 220 kV substation is assessed.The double logarithmic model is capable of reflecting the discreteness of the seismic fragilities of equipment in different studies,especially the uncertainties caused by modelling and analysis methods.The substation is found to be more vulnerable to earthquakes compared with individual pieces of equipment,indicating that the redundancy considered in current design should be improved.The substation’s median capacities are positively related to component median capacities,negatively related to component randomness and uncertainties.

关 键 词：电气设备 地震易损性 双对数正态分布 变电站系统 系统功能 

分 类 号：TM711[电气工程—电力系统及自动化] P315[天文地球—地震学]