南方电网技术2025，Vol.19Issue(7)：72-89,18.DOI:10.13648/j.cnki.issn1674-0629.2025.07.006
IBR主导的电力系统电网强度指标的定义、原理和分类综述
Reviewing System Strength Metrics in IBR-Dominated Power Systems:Definitions,Principles,and Classifications
摘要
Abstract
Along with the growing integration of renewable energy resources,the new power systems,which are dominated by inverter-based resources(IBRs),are facing critical challenges in both planning and operation stages.The conventionally used system strength metric,short-circuit ratio(SCR),exhibits limitations in assessing connections of new IBRs due to their unique dynamic behaviour and control interactions.In this paper,the definition of system strength is reviewed.The underlying principles of conventional SCR and its variants are then discussed,with their constraints explained.To describe the system strength in a more comprehensive way,this paper further classifies system strength into three categories:quasi-static,small-signal,and large-signal.For each category,relevant metrics are introduced and their relative merits are discussed.Electromagnetic transient simulations are presented to illustrate key insights.关键词
电网强度/短路比/IBR/准静态电网强度/小信号电网强度/大信号电网强度Key words
system strength/short-circuit ratio/inverter-based resource/quasi-static system strength/small-signal system strength/large-signal system strength分类
信息技术与安全科学引用本文复制引用
朱越,邱子天,HADJILEONIDAS Andreas,顾云杰,GREEN Tim..IBR主导的电力系统电网强度指标的定义、原理和分类综述[J].南方电网技术,2025,19(7):72-89,18.基金项目
香港城市大学校长助理教授启动基金资助项目(9382007),香港赛马会未来能源系统创科实验室资助项目(2025-0039).Supported by the City University of Hong Kong Startup Grant for Presidential Assistant Professor(9382007) （9382007）
the JC STEM Lab of Future Energy Systems(2025-0039). （2025-0039）
