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Control of an Electronically-Coupled Distributed Resource Unit Subsequent to an Islanding Event.
- Source :
-
IEEE Transactions on Power Delivery . Jan2008, Vol. 23 Issue 1, p493-501. 9p. 4 Diagrams, 1 Chart, 7 Graphs. - Publication Year :
- 2008
-
Abstract
- This paper presents a new control strategy for islanded (autonomous) operation of an electronically coupled distributed generation (DG) unit and its local load. The DG unit utilizes a voltage-sourced converter (VSC) as the coupling medium. In a grid-connected mode, based on the conventional dq-current control strategy, the VSC controls real- and reactive-power components of the DG unit. Subsequent to an islanding detection and confirmation, the dq-current controller is disabled and the proposed controller is activated. The proposed controller utilizes 1) an internal oscillator for frequency control and 2) a voltage feedback signal to regulate the island voltage. Despite uncertainty of load parameters, the proposed controller guarantees robust stability and prespecified performance criteria (e.g., fast transient response and zero steady-state error). The performance of the proposed controller, based on time-domain simulation studies in the PSCAD/EMTDC software environment, is also presented. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858977
- Volume :
- 23
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Delivery
- Publication Type :
- Academic Journal
- Accession number :
- 28540490
- Full Text :
- https://doi.org/10.1109/TPWRD.2007.911189