6 papers
On the Convergence of the Current-Constrained Power Angle Curve of Virtual Admittance-Based Grid Forming Converters
Haoxiang Zong, Chen Zhang, Yu Zhang +2
The current-constrained power-angle curve (PAC) is crucial for the transient synchronization stability (TSS) analysis of virtual admittance-based (VA) grid-forming (GFM) converters…
Generalized Feedback Control Modeling Method for Control-Driven Converter Systems
Chen Zhang, Haoxiang Zong, Xu Cai +1
Converters-based systems like wind farms manifest themselves as control-intensive systems, where control-driven stability issues frequently occur, e.g., oscillations. Such issues a…
AI-Based Impedance Encoding-Decoding Method for Online Impedance Network Construction of Wind Farms
Xiaojuan Zhang, Tianyu Jiang, Haoxiang Zong +3
The impedance network (IN) model is gaining popularity in the oscillation analysis of wind farms. However, the construction of such an IN model requires impedance curves of each wi…
An Extended Admittance Modeling Method with Synchronization Node for Stability Assessment of Converters-Interlinked System
Haoxiang Zong, Chen Zhang, Marta Molinas
Diverse synchronization dynamics within the grid-following (GFL)/grid-forming (GFM) converters-interlinked system are prone to induce oscillatory instabilities. To quantify their s…
A Multilayer Eigen-Sensitivity Method Using Loop Gain Model for Oscillation Diagnosis of Converter-Based System
Haoxiang Zong, Chen Zhang, Xu Cai +1
Loop gain-based eigen-sensitivity (LGES) is a useful frequency-domain tool for oscillation diagnosis of converter-based system. However, the existing theory is still scant in two a…
Three-Port Impedance Model and Validation of VSCs for Stability Analysis
Haoxiang Zong, Chen Zhang, Xu Cai +1
Modern power system is undergoing a paradigm shift from the synchronous generators-based system to the power electronics converters-dominated system. With the high penetration of c…