大型变压器抗震加固方法及其经济效用分析  

Seismic Reinforcement Method and Its Economic Effect Analysis of Large Transformer

作　　者：卿东生 陈星[2] 李晓璇 谢强[2,3] QING Dongsheng;CHEN Xing;LI Xiaoxuan;XIE Qiang(Guangdong Tianguang Energy Technology Development Co.,Ltd.,Guangzhou 510000,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education,Tongji University,Shanghai 200092,China)

机构地区：[1]广东天广能源科技发展有限责任公司,广州510000 [2]同济大学土木工程学院,上海200092 [3]同济大学工程结构服役性能演化与控制教育部重点实验室,上海200092

出　　处：《高压电器》2021年第11期139-147,共9页High Voltage Apparatus

基　　金：国家自然科学基金项目(51878508);国家重点研发计划资助(2018YFC0809400)。

摘　　要：大型变压器作为电网系统中的关键性设备,其遭受震害有可能造成巨大的社会及经济损失。为评估抗震加固前后大型变压器设备的抗震经济效用,以某220 kV仿真变压器模型为例,通过地震模拟振动台试验对提出的抗震加固方法进行验证,利用计算模型对大型变压器进行地震易损性分析,以及抗震经济效用评估分析。结果表明:在升高座与变压器箱体之间设置连接杆件的抗震加固方法能有效降低套管的地震响应水平,减小变压器发生破坏的概率,且对变压器牵拉破坏失效概率的降低效果更为显著。采取抗震加固措施可以有效降低变压器的震害费用,降幅最大接近50%。相对于抗震加固的经济效益而言,加固改造成本较小,抗震加固措施对大型变压器有较好的抗震经济效用。As for the large transformer,the key equipment in power grid system,its seismic damage may cause huge social and economic losses.For evaluating the seismic economic effect of large transformer before and after seismic reinforcement,one 220 kV simulation transformer is taken as an example,the proposed seismic reinforcement meth-od is verified through the seismic simulation shaking table test.The calculation model is used to perform seismic vulnerability analysis and also seismic economic effect assessment analysis of the large transformer.The results show that such seismic reinforcement methos as setting linkage between the turret and the transformer tank can reduce effectively the seismic responses level of the bushing and the probability of transformer failure.And the result of reducing probability of transformer traction failure is more remarkable.Adoption of seismic reinforcement measures can reduce effectively the seismic damage cost of transformer up to 50%.Compared with the economic effect of seismic reinforcement,the reinforcement modification cost is small and the seismic reinforcement measure has better seismic eco-nomic effects on large transformers.

关 键 词：大型变压器 抗震加固 地震模拟振动台试验 地震易损性 经济效用分析 

分 类 号：TM41[电气工程—电器] TU352.11[建筑科学—结构工程]