Invention Reference Number
This invention revolutionizes stability analysis in interconnected power grids, addressing the growing challenges posed by the increasing adoption of renewable energy and power electronics. Traditional methods require modeling entire systems in exhaustive detail, which becomes impractical for large-scale grids. The proposed solution uses a system partition methodology and measured impedance models to assess stability more efficiently, pinpoint instability locations, and predict oscillation frequencies. By delivering fast, accurate insights, this approach equips system operators to proactively manage grid performance and avoid cascading failures or blackouts.
Description
As modern power grids transition toward renewable energy sources and power electronics, their dynamic characteristics have become more complex, requiring advanced stability analysis tools. Conventional methods rely on detailed system-wide modeling, which can be computationally prohibitive and error-prone for large-scale grids, due to challenges such as pole-zero cancellations in impedance aggregation.
This invention introduces a partition-based method that divides the grid into smaller, manageable sub-areas and their interconnections. Stability is analyzed at these levels, enabling more efficient computations and more reliable results. The approach incorporates measured impedance models, providing real-time insights into system behavior. It also identifies instability locations and predicts oscillation frequencies, allowing operators to take preemptive action. Experimental and simulation results validate the method's effectiveness, demonstrating its potential to transform power grid stability assessment.
Benefits
- Efficiency: Eliminates the need for detailed, large-scale system modeling, reducing computational burden and time requirements.
- Speed: Rapidly detects instability and provides detailed insights into oscillation dynamics.
- Scalability: Easily adapts to various sizes, from microgrids to national power systems.
Applications and Industries
- Utility control centers: Empowers operators with real-time data for managing grid performance and preventing instability.
- Renewable energy systems: Supports stability in grids with high penetration of solar, wind, and other renewables.
- National and regional power grids: Addresses the complexity of large-scale systems while ensuring reliable operation.
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051
