Abstract
Small-signal stability, often in the form of low frequency oscillations, has been found to be the limiting factor when determining power transfer capabilities in a number of power systems. This paper proposes a new strategy to improve the power transfer capability constrained by small-signal stability by appropriately rescheduling generation based on sensitivity analysis. In the proposed strategy, a small-signal stability index, which can be computed quickly and reliably, is used to determine the small-signal security status of a system and also for the purpose of contingency screening. Two sensitivity-based dispatch methods are proposed to reschedule the generation in order to maximize power transfer subject to the small-signal stability constraint under a set of selected contingencies. The effectiveness of the proposed methods is demonstrated by comparing with other generation dispatch methods on a real power system model.
| Original language | English |
|---|---|
| Pages (from-to) | 524-530 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Power Systems |
| Volume | 19 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2004 |
Keywords
- Eigenvalue
- Optimization
- Power system scheduling
- Security
- Sensitivity
- Small-signal stability
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering