基于比例风险模型的输电线路状态评估方法  

State Assessment Method of Transmission Lines Based on Proportional Hazard Model

作　　者：颜祖明 钟富城 王星华[1] YAN Zuming;ZHONG Fucheng;WANG Xinghua(Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学,广东广州510006

出　　处：《河北电力技术》2022年第6期49-53,共5页Hebei Electric Power

摘　　要：输电线路状态评估现有评估方法相对单一,且未考虑运行年限及检修间隔的影响,为解决上述问题,提出一种基于比例风险模型的输电线路状态评估方法。首先构建了输电线路的状态评估关键参量体系,得到输电线路状态评估关键状态量;然后通过比例风险模型对输电线路各单元进行状态评分;最后通过层次分析法得到各单元状态量的权重,根据综合状态评估,实现了输电线路的动态评估和异常状态的快速检测。通过线路状态评估实例分析,验证了本文方法的可行性以及提出了考虑时间特征的评估模型,具有一定实用性及参考价值。The existing state assessment method of transmission lines is relatively simple, and does not consider the influence of operating years and maintenance interval on transmission lines state assessment.To solve above problems, a state assessment method of transmission lines based on proportional hazard model is proposed.Firstly, the key parameter system of the transmission lines state assessment is established, and the key quantity of transmission lines state assessment is obtained.Then a proportional hazard model is used to score the status of each transmission line unit.Finally, the weight of each unit state quantity is obtained by the analytic hierarchy process.According to the comprehensive state assessment, the dynamic evaluation of transmission lines and the rapid detection of abnormal state are realized.Through an example analysis of the line state assessment, the feasibility of the method in this paper is verified, and an assessment model considering time characteristics is proposed, which has certain practicability and reference value.

关 键 词：输电线路 状态评估 比例风险模型 网格搜索 

分 类 号：TM755[电气工程—电力系统及自动化]