摘要
目前我国电气设备易损性分析只注重变电站设备,未对输电线进行易损性分析,影响了电力网络抗震风险分析结果的精度。文章分析了电气设备易损性分析方法和易损性曲线绘制方法,并结合四川电网在汶川地震中的设备损坏情况,应用震害统计分析方法分析了变电站主要设备和输电线路杆塔结构的易损性,确定了主要电气设备的易损性曲线。分析结果可对电气设备的抗震设计、加固和维修提供决策支持,为电力网络抗震风险评估提供基础数据,为改善电力系统抗震性能提供参考。
At present the vulnerability analysis of power equipments in China pays only attention to substation equipments and the vulnerability analysis of transmission lines is not performed, thus the accuracy of aseismatic risk analysis of power networks is affected. The vulnerability analysis method for power equipments and the plotting method of vulnerability curve are analyzed; combining with the power equipment damage of Sichuan power grid caused by the Wenchuan earthquake and applying the seismic damage statistical analysis method of statistical analysis, the vulnerability of main substation equipments and that of tower struntrue of transmission lines are analyzed to determine the vulnerability curves of main power equipments. Results of the analysis can offer decision support for aseismic design, reinforcement and maintenance of power equipments and offer basic data for aseismic risk evaluation of power networks, besides, the analysis results is available for reference to aseismic performance of power systems..
出处
《电网技术》
EI
CSCD
北大核心
2011年第4期25-28,共4页
Power System Technology
关键词
电气设备
汶川地震
震害统计分析方法
易损性
曲线
四川电网
power equipments
Wenchuan earthquake
seismic damage statistical analysis method
vulnerability curves
Sichuan power grid
