电网技术2026，Vol.50Issue(4)：1444-1454,中插17-中插19,14.DOI:10.13335/j.1000-3673.pst.2025.0651
构网型储能支撑的新能源孤岛微电网静态电压稳定性分析
Static Voltage Stability Analysis of New Energy Islanded Microgrids Supported by Grid-forming Energy Storage
摘要
Abstract
Islanded microgrids in 100％new energy scenarios lack synchronous machine power support and face voltage stability challenges.This paper proposes a method to directly calculate static voltage stability critical points and stability boundary with new energy islanded microgrids supported by grid-forming(GFM)energy storage.It defines the stability margin index in high-dimensional scenarios with multivariate changes.Firstly,this study considers two types of static voltage instability in islanded microgrids:saddle node bifurcation and limit induced bifurcation caused by energy storage power constraints,and establishes computational models for both critical points by the direct method.Then,the neighboring critical points are computed directly by using the known critical points as initial values,yielding the high-dimensional static voltage stability boundary with load and new energy power change simultaneously.The stability margin index in traditional one-dimensional scenarios is extended to high-dimensional scenarios.Additionally,the static voltage stability margin index with multivariate changes is defined,and the calculation procedure of the stability margin considering the storage power constraint is given.Finally,the accuracy and efficiency of the proposed indicators and methods are verified in the IEEE 33-bus system,and the effect on static voltage stability of capacity,installation locations of the GFM energy storage,and different GFM control strategies are further analyzed with example data.关键词
静态电压稳定边界/静态电压稳定裕度/潮流雅可比矩阵/孤岛微电网/下垂控制Key words
static voltage stability boundary/static voltage stability margin/power flow Jacobian matrix/islanded microgrid/droop-control分类
信息技术与安全科学引用本文复制引用
吴元瑶,肖仕武..构网型储能支撑的新能源孤岛微电网静态电压稳定性分析[J].电网技术,2026,50(4):1444-1454,中插17-中插19,14.基金项目
国网冀北电力有限公司科技项目:"分布式光伏故障穿越策略研究"(52018K230001).Project Supported by Science and Technology Project of State Grid Jibei Electric Power Co.,Ltd.,(52018K230001). （52018K230001）
