Stability Analysis of Real-World Subsynchronous Oscillations via Black-Box EMT Models

作者：Rahul Halugudde Ramakrishna, Zhixin Miao, Lingling Fan · 发表于：IEEE Transactions on Power Delivery · 年份：2024 · DOI：10.1109/tpwrd.2024.3447463 · 被引用次数：4 · 研究领域：Power System Optimization and Stability

In this paper, we demonstrate methods to extract$dq$admittance for a solar photovoltaic (PV) farm from its black-box model used for electromagnetic transient (EMT) simulation. Each$dq$admittance corresponds to a certain operating condition. Based on the$dq$admittance, analysis is carried out to evaluate how grid strength and solar irradiance may influence stability. Two types of stability analysis methods (open-loop system based and closed-loop system based) are examined and both can deal with$dq$admittance's frequency-domain measurements directly and produce graphics for stability analysis. The findings based on$dq$admittance-based analysis are shown to corroborate EMT simulation results.