考虑系统状态与故障应对能力的关键线路综合辨识  

Comprehensive Identification of Critical Lines Considering System State and Fault Response Capability

作　　者：邓婧 曾庆彬 李钦豪[3] DENG Jing;ZENG Qingbin;LI Qinhao(Guangzhou Railway Polytechnic,Guangzhou,Guangdong 511300,China;Guangzhou Powe Electrical Technology Co.,Ltd.,Guangzhou,Guangdong 510630,China;School of Electric Power,South China University of Technology,Guangzhou,Guangdong 510641,China)

机构地区：[1]广州铁路职业技术学院,广东广州511300 [2]广州市奔流电力科技有限公司,广东广州510630 [3]华南理工大学电力学院,广东广州510641

出　　处：《广东电力》2025年第1期41-50,共10页Guangdong Electric Power

基　　金：国家自然科学基金项目(52177085)。

摘　　要：现有研究普遍从电力系统拓扑结构与物理运行方面对关键线路进行辨识,而对故障影响下系统的主动抵御能力考虑欠缺。为此,提出融合系统状态及故障应对能力的输电网关键线路辨识方法,旨在兼顾多影响因素综合评估输电线路的重要程度。首先,兼顾阻断控制手段的经济性与快速性,基于时空层面提出线路故障后系统的min-max应对能力模型及高效求解方法,表征系统对故障冲击后的应对能力;然后,考虑系统拓扑结构状态、潮流分布状态及故障应对能力,提出融合多因素的关键线路综合辨识指标及辨识方法,全面衡量线路故障对系统的影响;最后,采用IEEE 39节点系统对所提方法进行仿真分析,结果表明逐条开断高风险关键线路可大幅降低系统网络效能,连续开断排序前10的关键线路网络效能可降低至40%以下,验证了所提方法的合理性与有效性。Existing research commonly focuses on identifying critical lines from the perspective of power system topology and physical operation,while lacking consideration of the active resilience capability of systems under fault conditions.To this end,a method for identifying critical transmission lines in power grids that integrates system state and fault response capability is proposed.The aim is to comprehensively evaluate the importance of transmission lines by considering multiple influencing factors.Firstly,considering the economic and rapid nature of blocking control measures,a min-max response capability model and an efficient solution method based on temporal and spatial dimensions are proposed to represent the systems response capability after a line fault.Then,taking into account the systems topological structure,power flow distribution state,and fault response capability,a comprehensive identification index and method that integrates multiple factors are proposed to fully assess the impact of line faults on the system.Finally,the proposed method is simulated and analyzed using the IEEE 39 bus system.The results show that identifying high-risk critical lines through sequential disconnection can significantly reduce the network efficiency of the system and tripping the top 10 critical lines in order can reduce the network efficiency to below 40%,verifying the reasonableness and effectiveness of the proposed method.

关 键 词：关键线路 故障应对能力 拓扑联系度 加权潮流分布熵 输电网 

分 类 号：TM71[电气工程—电力系统及自动化]