Selective modal analysis in power systems. Final report
A promising new framework for analyzing and reducing the large, linear, time-invariant dynamic models used to study dynamic stability in power systems is investigated. The framework is termed Selective Modal Analysis or SMA, and goes beyond traditional modal analysis methods in ways that appear crucial to successful practical use of modal methods in both on-line and off-line studies. Comparisons with existing approaches to the dynamic stability problem are made, and the distinctive features of SMA are brought out. SMA provides tools for identifying system variables that are most significant in constructing selected system modes. It then permits one to iteratively construct a reduced model that retains only these significant variables and yet represents the effect of the less significant portions of the system on the selected modes. Central to this is the construction of Dynamic Equivalents for the less significant parts of the system. The theoretical development is illustrated by computational results based on the well-known 39-Bus New England Model. The results of the project are encouraging, and suggest that further development and testing of SMA for use as a tool in operation and planning would be worthwhile.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Electric Power Systems Engineering Lab.
- OSTI ID:
- 6504828
- Report Number(s):
- EPRI-EL-2830; ON: DE83901586
- Country of Publication:
- United States
- Language:
- English
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