摘要
特高压换流站是特高压直流输电系统中的重要节点。为分析特高压换流站系统整体的地震易损性,根据换流站中各设备布置位置和功能实现逻辑关系,对换流站进行了关键回路及设备的划分并建立了整个换流站的系统功能逻辑模型,以震后能够正常输出的电量作为系统的性能评价指标将其功能状态分为5类,基于划分子系统的地震失效概率模型,利用失效模式与影响分析的枚举法求得了某±800kV换流站系统在具有不同输电能力功能状态下的地震失效概率和易损性曲线,并通过对子系统易损性参数的敏感性分析指出了换流站系统的抗震薄弱环节。
The converter stations are the essential nodes in an UHV DC transmission system.To evaluate the seismic vulnerability of the UHV converter stations as a whole system,the converter station is divided into several critical loops and a corresponding systematic functional logic model is built up according to the layout and logic relationships of the equipment loops in the converter station.Taking the delivery of the electric power after the earthquake as the system performance evaluation index,the systematic functional state is classified into five levels.Based on the seismic failure probability model of the divided subsystems,the failure probabilities and the seismic vulnerability curves in different functional states of the converter station system under different seismic intensities are obtained via the enumeration method with the failure mode and the impact analysis.And the weak links of the converter station system is identified through the sensitivity analysis of the vulnerability parameters of the divided subsystems.
作者
梁黄彬
谢强
LIANG Huangbin;XIE Qiang(College of Civil Engineering,Tongji University,Yangpu District,Shanghai 200092,China)
出处
《电网技术》
EI
CSCD
北大核心
2022年第2期551-557,共7页
Power System Technology
基金
国家自然科学基金项目(51878508)。
