南方电网技术2026，Vol.20Issue(4)：50-64,15.DOI:10.13648/j.cnki.issn1674-0629.2026.04.005
交流输电线路的能量存储机制及其参与电力系统动态过程的角色
Energy Storage Mechanism of AC Transmission Line and Its Role in Dynamic Process of Power Systems
摘要
Abstract
As a crucial component of power systems,AC transmission lines play a pivotal role in the energy exchange process during system oscillations,especially in prevalent scenarios where the time-scale dynamics of internal potentials in new energy generation equipment are comparable to those of transmission lines.Under such conditions,the dynamic characteristics of AC transmission lines will profoundly participate in the energy exchange process of system oscillations.Therefore,investigating the energy storage mechanism of AC transmission lines and their fundamental modes of involvement in the energy exchange of system oscillations hold foundational significance for clarifying the physical mechanisms behind these oscillations.However,existing researches have predominantly focused on mathematical characterizations of AC transmission lines based on instantaneous voltage and current values or harmonic relationships,lacking a physical understanding of how transmission lines participate in the energy exchange process of system oscillations.Consequently,the oscillation mechanisms in new energy power systems remain unclear.Firstly,a typical converter-interfaced AC system is taken as an example,the basic operational principles of AC transmission lines is elucidated under the objective of stable power transmission.Secondly,the analytical relationships characterizing the dynamics of AC transmission lines is established.Thirdly,their dynamic characteristics and energy storage implications are analyzed.Finally,a detailed examina-tion of the energy exchange behavior in closed-loop system dynamics is conducted,deepening the understanding of how AC transmis-sion lines intrinsically participate in system dynamic processes and laying a vital cognitive foundation for revealing the general energy exchange mechanisms underlying current system oscillations.关键词
交流网络/输电线路/系统振荡/能量交换/动态分析Key words
AC network/transmission lines/system oscillations/energy exchange/dynamic analysis分类
信息技术与安全科学引用本文复制引用
徐秋朦,王思成,袁小明..交流输电线路的能量存储机制及其参与电力系统动态过程的角色[J].南方电网技术,2026,20(4):50-64,15.基金项目
国家自然科学基金资助项目(U23B6008) （U23B6008）
台达电力电子科教发展计划资助项目(DREN2024001). Supported by the National Natural Science Foundation of China(U23B6008) （DREN2024001）
the Delta Power Electronics Science and Education Development Program(DREN2024001). （DREN2024001）
