推测火力发电厂地震易损性的计算方法  

Study on the Calculation Method of Inferring the Seismic Vulnerability of Thermal Power Plants

作　　者：田得元 刘如山[1] 夏旭忆 王振辉 TIAN Deyuan;LIU Rushan;XIA Xuyi;WANG Zhenhui(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China;School of Civil and Environmental Engineering,Harbin Institute of Technology,Shenzhen,Shenzhen 518055,Guangdong,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实验室,黑龙江哈尔滨150080 [2]哈尔滨工业大学(深圳)土木与环境工程学院,广东深圳518055

出　　处：《地震研究》2022年第3期379-387,共9页Journal of Seismological Research

基　　金：中国地震局工程力学研究所基本科研业务费专项(2021EEEVL0315);国家重点研发计划项目课题(2019YFC1509301)资助.

摘　　要：发电厂的地震易损性研究对于电力系统的震害防御和地震经济损失风险分析工作具有重要意义。本文提出一种推测火力发电厂地震易损性的计算方法。根据美国关于火力发电厂的研究成果和中国变电站地震易损性矩阵,假定在火力发电厂与变电站的震害指数期望值相同时,其分布的离散性也相同的前提下,利用Beta分布函数和对数正态分布的累积函数,计算了火力发电厂在不同地震烈度下的地震易损性矩阵,拟合了基于地震动峰值加速度的火力发电厂地震易损性曲线,确定了基于地震动峰值加速度的火力发电厂地震易损性矩阵。结果表明:该方法计算得到的火力发电厂地震易损性适用于我国以燃煤和天然气作为燃料的火力发电厂。The study on the seismic vulnerability of power plants is of great significance to the earthquake damage prevention of the plant's power systems and the risk analysis of the economic losses from earthquakes.This paper presentes a calculation method for inferring the seismic vulnerability of thermal power plants.According to the research results of the relationship between the loss ratio and the earthquake intensity of thermal power plants in the United States,and the research results of the seismic vulnerability of substations in China,assuming that when the expected values of seismic damage indexes of thermal power plants and substations are the the same,discreteness distributions of these expected values are the same,and using the Beta distribution function and the cumulative function of log-normal distribution,the seismic vulnerability matrix of thermal power plants subjected to seismic intensities is calculated,and the seismic vulnerability curves of thermal power plants based on the peak ground acceleration are fitted.

关 键 词：火力发电厂 变电站 BETA函数 破坏比 地震易损性 

分 类 号：TM621[电气工程—电力系统及自动化] TU312.3[建筑科学—结构工程]