电力系统及其自动化学报2026，Vol.38Issue(1)：83-94,104,13.DOI:10.19635/j.cnki.csu-epsa.001736
含构网型SVG的风电并网系统阻抗建模与系统强度评估
Impedance Modeling and System Strength Assessment of Grid-connected Wind Power System with Grid-forming SVG
摘要
Abstract
Since the integration of high-penetration renewable energy has accelerated the power electronic transforma-tion of power systems,the conventional system strength assessment methods such as short circuit ratio can no longer ful-ly reflect the dynamic stability of power-electronic-dominated systems.To solve this problem,a small-signal impedance modeling and wide-frequency system strength assessment metric(SSAM)for grid-connected wind power systems incor-porating grid-forming static var generators(GFM-SVGs)are proposed.First,a dq-domain small-signal impedance mod-el of the GFM-SVG is developed,taking into account the power synchronization disturbance effects.Then,the SSAM is introduced to quantify the system strength characteristics across different frequency ranges.Finally,simulation valida-tion is conducted under a wind power grid-connected scenario using PSCAD/EMTDC.Results show that the proposed SSAM demonstrates superior performance over the traditional short circuit ratio in terms of stability assessment,provid-ing a theoretical foundation and technical support for the planning and operation of power systems with high-penetration renewable energy.关键词
构网型静止无功发生器/阻抗建模/系统强度评估/小扰动稳定性Key words
grid-forming static var generator(GFM-SVG)/impedance modeling/system strength assessment/small-signal stability分类
信息技术与安全科学引用本文复制引用
李长宇,王宣元,刘海涛,梁倍华,卢文清,谢欢..含构网型SVG的风电并网系统阻抗建模与系统强度评估[J].电力系统及其自动化学报,2026,38(1):83-94,104,13.基金项目
国网冀北电力有限公司科技项目(B3018K240004). （B3018K240004）
