电网技术2026，Vol.50Issue(3)：中插104,1255-1264,中插105,12.DOI:10.13335/j.1000-3673.pst.2025.1017
考虑电气化铁路负荷接入的电网脆弱性评估
Vulnerability Assessment of Power Grid Considering Electrified Railway Load Access
摘要
Abstract
With the rapid development of electrified railways,the frequent fluctuations and mobile impacts of traction loads pose potential threats to the safety and stability of the power grid.Quantitative assessment of grid vulnerability under traction load access can provide a theoretical basis for the location of electrified railway access points.In this context,this study employs an energy function to characterize the power grid state's vulnerability,focusing on changes in potential energy induced by traction load power.To capture the structural vulnerability of the power grid caused by variations in source-load characteristics of traction loads,the concept of electrical betweenness is utilized.Additionally,information entropy is applied to both state-and structural-vulnerability metrics,and a comprehensive vulnerability index is proposed that accounts for node-level heterogeneity within the grid.Case studies demonstrate that the proposed index effectively captures variations in grid structure and state,identifies critical vulnerabilities,and provides guidance on integrating traction loads into the power grid.关键词
综合脆弱性/能量函数/电气介数/信息熵/牵引负荷Key words
comprehensive vulnerability/energy function/electrical betweenness/information entropy/traction load分类
信息技术与安全科学引用本文复制引用
曹昭祺,林圣,孙小军,姜晓锋..考虑电气化铁路负荷接入的电网脆弱性评估[J].电网技术,2026,50(3):中插104,1255-1264,中插105,12.基金项目
国家自然科学基金项目(52507151) （52507151）
四川省自然科学基金项目(2026NSFSCZY0063) （2026NSFSCZY0063）
国家电网有限公司科技项目(5400-202355767A-3-5-YS).Project Supported by National Natural Science Foundation of China(52507151) （5400-202355767A-3-5-YS）
Sichuan Provincial Natural Science Foundation(2026NSFSCZY0063) （2026NSFSCZY0063）
the Science and Technology Project of State Grid Corporation of China(5400-202355767A-3-5-YS). （5400-202355767A-3-5-YS）
