| Autor: |
Dmitry E. Kataev, Alexey B. Iskakov, Igor B. Yadykin, Vladislav K. Shipilov |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
IFAC Proceedings Volumes. 47:9087-9092 |
| ISSN: |
1474-6670 |
| DOI: |
10.3182/20140824-6-za-1003.01257 |
| Popis: |
We propose a new method for the small-signal stability analysis of power systems based on the spectral decomposition of a square H 2 norm of the transfer function. Compared with the dynamics of H 2 and H ∞ norms of the transfer functions, the analysis of the behavior of individual eigen-components allows the earlier identification of the pre-fault condition occurrence. Since each eigen-component is associated with a particular eigenvector, the potential sources of instability can easily be localized and tracked in real time. An important class of systems operating under the pre-fault conditions near the boundary of stability is considered. We demonstrate that in such cases several ill-stable modes can increase the system energy up to a critical level much earlier due to their synergetic effect. In particular, an ill-stable low-frequency mode can act as a catalyst increasing the energy in the system. An illustrative test for the stability analysis of a real small power grid at Russky Island is provided. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
