中文摘要：

在传统的电力系统调度与运行控制中,电网拓扑结构通常被认为是固定不变的。然而,近年来的研究表明,传输线路切换可以作为系统发生故障之后的一种有效的安全校正手段。传输线切换操作有可能在无需影响发电出力与负荷供给的前提下快速消除电网中的线路潮流过载,将系统校正到安全运行状态,与传统校正手段相比具有响应速度快、经济性好的优点。系统阐述了基于传输线切换的电网安全校正决策问题的数学模型和求解方法,总结了国内外相关研究现状,并分析了该问题在研究和应用中亟需解决的若干关键点。最后对基于传输线切换的安全校正策略的应用前景,尤其是在包含大规模可再生能源的电网的安全高效运行中可能发挥的重要作用进行了分析和展望。

英文摘要：

Grid topology is traditionally considered as fixed in power system scheduling, operation and control. Recent research, however, reveals that grid topology control by transmission line switching can serve as an effective corrective scheme after system contingencies. Corrective line switching operations can possibly relieve load flow overloads quickly without affecting generator outputs and load supplies, and take the system back to secure states. Compared with traditional corrective measures, line switching is advantageous in that it is fast and economical. This paper systematically presents mathematical formulation and solution methodology for decision making of corrective line switching, summarizes the status quo of relevant international and domestic research, and proposes several key issues to be addressed in this area. Prospects of corrective line switching are also analyzed, especially its potential role in secure and efficient operation of power systems with large-scale renewable energy sources.