含静止无功发生器的直驱风电并网系统稳定性分析方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2023-02-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for stability analysis of wind power systems are computationally inefficient under high-dimensional state matrices and are difficult to explain oscillation mechanisms. Impedance analysis can only qualitatively determine stability and cannot quantitatively assess the interactions between control channels.
A stability analysis method based on ICAD theory is adopted. Key control channels are screened through eigenvalue sensitivity analysis. The wind power system with SVG direct drive is simplified into a 2-input 2-output coupled system. The Nyquist criterion is used to determine the stability, and the interaction factor is measured at the same time.
It simplifies the stability analysis of multivariable coupled systems, enabling qualitative assessment of system stability and quantitative evaluation of interactions between control channels, reducing computational complexity and revealing the causes of instability.
Smart Images
Figure CN116093974B_ABST