基于多源信息融合方法的输电塔结构安全评估模型  

Safety assessment of transmission tower structure based on information fusion model with multiple factors

作　　者：王莹 高秀云[1] 樊沃周 王妍 WANG Ying;GAO Xiuyun;FAN Wozhou;WANG Yan(Economic and Technological Research Institute of State Grid Heilongjiang Electric Power Co.,Ltd.,Harbin 150036,China;College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]国网黑龙江省电力有限公司经济技术研究院,黑龙江哈尔滨150036 [2]哈尔滨工程大学智能科学与工程学院,黑龙江哈尔滨150001

出　　处：《地震工程与工程振动》2023年第2期232-238,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51609046,61633008)。

摘　　要：建立多源因素影响下的输电塔结构安全评估模型。该模型以多因素影响下的有限元计算结果为依据,分别采用了熵权法和模糊层次分析法计算评价指标的指标权重和安全等级权重。基于相对熵理论计算各评价指标对应不同工况的变权重。通过引入变权重和隶属度函数综合考虑了多指标影响下的基本概率指派函数,并采用柯西分布描述指标值与安全等级关系,进而采用D-S(Dempster-Shafer)证据理论模型对考虑的多因素进行两两融合,得到了最终的输电塔结构安全等级概率。以某实际输电塔结构为例,采用所建立的评估模型对多工况进行了安全等级评估。评估结果表明,文中提出的评估方法能够有效地反应多源因素综合影响下不同评价指标的动态变化过程对输电塔结构安全评估等级的影响。A safety assessment model for transmission tower structure was developed with multiple factors.According to the numerical simulation results which were calculated by the finite element method,the proposed model adopted the information entropy and fuzzy analytical hierarchy process to determine the index weights and grade weights,respectively.The variable weight of each index was calculated by the relative entropy method for all the load cases.By introducing the variable weight that integrated multiple factors,the basic probability assignment(BPA)was extended.The relation between the safety grade and index was determined by Cauchy distribution,and the Dempster-Shafer(D-S)evidence theory was used to combinate the two independent pieces of evidence to evaluate the probability of the final safety grade for transmission tower structure.Take a transmission tower structure as an example,the proposed safety assessment model was used to evaluate the safety grade.The assessment results showed that the proposed model can reasonably evaluate the safety grade with multiple dynamic factors.

关 键 词：输电塔 信息融合 变权重 D-S证据理论 安全评估 

分 类 号：TM75[电气工程—电力系统及自动化]