摘要
变压器—套管体系作为电力系统中重要的一环,在地震中受损较严重。为探究变压器—套管体系的地震易损性和地震失效风险,建立某±800 kV特高压换流变压器—套管体系有限元模型,对其进行不确定性分析和易损性分析,并评估该体系的地震失效风险。结果表明:各类不确定性对套管动力响应均有一定影响,其中认知偏差不确定性对体系动力响应影响较大。体系地震失效风险与场地因素有关,地震危险性低的区域,地震失效风险有可能较高。在进行换流变设备抗震设计时,建议考虑多重不确定性对变电站设备的地震易损性和地震失效风险的影响。
As an important part of power system,transformer⁃bushing system is seriously damaged in the seismic.To explore the seismic vulnerability and seismic failure risk of the transformer⁃bushing system,a finite element model of a±800 kV UHV converter transformer⁃bushing system is set up,its uncertainty and seismic vulnerability analysis are performed,and the seismic failure risk of the system is assessed.The results show that various uncertainties have a certain effect on the dynamic response of the bushing,in which the effect of epistemic uncertainty on the dynamic response of the system is large.The seismic failure risk of the system is related to site factors.The lower the area with low seismic danger,the higher the seismic failure risk is.In case of seismic design of converter transformer,it is sug⁃gested to consider the impact of multiple uncertainties on the seismic vulnerability and seismic failure risk of substa⁃tion equipment.
作者
叶旭琛
朱阳
何畅
谢强
YE Xuchen;ZHU Yang;HE Chang;XIE Qiang(College of Civil Engineering,Tongji University,Shanghai 200092,China;Guangzhou Bureau of China Southern Power Grid EHV Transmission Company,Guangzhou 510000,China;School of Civil Engineering,Central South University,Changsha 410075,China)
出处
《高压电器》
CAS
CSCD
北大核心
2022年第8期65-73,共9页
High Voltage Apparatus
基金
国家自然科学基金资助项目(52008406)
湖南省自然科学基金资助项目(2021JJ40737)。
关键词
变压器套管
动力响应
不确定性
地震易损性
地震失效风险
transformer bushing
dynamic response
uncertainty
seismic vulnerability
seismic failure risk
