基于主成分分析的输电杆塔多维度故障风险模型

Multi-Dimensional Fault Risk Model of Transmission Tower Based on Principal Component Analysis

针对载冰、强风、降雨等多种影响因素同时对输电线路杆塔造成冲击而缺乏综合故障风险评估模型,对此,以南方电网中载冰、强风、降雨为影响因素,基于主成分分析法,提出了输电线路杆塔多维度综合故障风险评估模型。首先,根据载冰速度特点,设计了载冰对输电杆塔的故障风险模型;其次,基于风载荷模型,提出了强风对输电杆塔的故障风险模型;第三,结合降雨的气象特征,给出了降雨对输电杆塔的故障风险模型;第四,在此基础上,提出了基于主成分分析法的输电杆塔多维度综合风险建模方法;最后,以某实际输电杆塔为例,验证了所提方法的有效性。

In view of the lack of comprehensive failure risk assessment model due to the impact of ice,strong wind,rainfall and other factors on transmission line towers at the same time,a multi-dimensional comprehensive failure risk assessment model for transmission line towers is proposed based on the principal component analysis method,taking ice,strong wind,rainfall and other factors in the Southern Power Grid as the influencing factors.Firstly,according to the characteristics of ice loading speed,a fault risk model of transmission towers with ice loading is designed.Secondly,based on the wind load model,a fault risk model of transmission towers caused by strong wind is proposed.Thirdly,combined with the meteorological characteristics of rainfall,the failure risk model of transmission tower caused by rainfall is given.Fourthly,on this basis,a multi-dimensional comprehensive risk modeling method for transmission towers based on principal component analysis is proposed.Finally,an actual transmission tower is taken as an example to verify the effectiveness of the proposed method.