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Strong Dynamic Interactions of Grid-Connected DFIGs With Power Systems Caused by Modal Coupling.
- Source :
- IEEE Transactions on Power Systems; Nov2017, Vol. 32 Issue 6, p4386-4397, 12p
- Publication Year :
- 2017
-
Abstract
- This paper establishes a closed-loop interconnected dynamic model of a power system with a doubly fed induction generator (DFIG) for wind power generation, wherein, the DFIG and power system are modeled as two open-loop interconnected subsystems. The established model indicates that the impact of the dynamic interactions introduced by the DFIG on the power system's small-signal angular stability is the difference between the closed-loop and open-loop electromechanical oscillation modes (EOMs). The analysis conducted in this study reveals that when an open-loop DFIG oscillation mode (DOM) is close to an open-loop EOM on the complex plane, the modal coupling of the open-loop EOM and DOM can cause strong dynamic interactions between the DFIG and the power system; thus, the DFIG has a significant impact on the power system's small-signal angular stability. An example multimachine power system with grid-connected DFIGs is presented to demonstrate and validate the analysis and conclusions made in the paper. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 08858950
- Volume :
- 32
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Systems
- Publication Type :
- Academic Journal
- Accession number :
- 125813510
- Full Text :
- https://doi.org/10.1109/TPWRS.2017.2677467